US2831793A - Composite veneer or plywood panel - Google Patents
Composite veneer or plywood panel Download PDFInfo
- Publication number
- US2831793A US2831793A US2831793DA US2831793A US 2831793 A US2831793 A US 2831793A US 2831793D A US2831793D A US 2831793DA US 2831793 A US2831793 A US 2831793A
- Authority
- US
- United States
- Prior art keywords
- veneer
- core
- particles
- wood
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002131 composite material Substances 0.000 title claims description 30
- 239000011120 plywood Substances 0.000 title description 36
- 239000002245 particle Substances 0.000 claims description 102
- 239000002023 wood Substances 0.000 claims description 96
- 229920002678 cellulose Polymers 0.000 claims description 16
- 239000001913 cellulose Substances 0.000 claims description 16
- 239000011162 core material Substances 0.000 description 170
- 239000010410 layer Substances 0.000 description 74
- 239000000047 product Substances 0.000 description 56
- 239000000835 fiber Substances 0.000 description 38
- 238000004519 manufacturing process Methods 0.000 description 24
- 229920005989 resin Polymers 0.000 description 18
- 239000011347 resin Substances 0.000 description 18
- 239000002344 surface layer Substances 0.000 description 18
- 239000007771 core particle Substances 0.000 description 16
- 239000000853 adhesive Substances 0.000 description 12
- 230000001070 adhesive Effects 0.000 description 12
- 239000011230 binding agent Substances 0.000 description 12
- 239000011121 hardwood Substances 0.000 description 10
- 238000007906 compression Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 241000219495 Betulaceae Species 0.000 description 6
- 241000218922 Magnoliophyta Species 0.000 description 6
- 229920002522 Wood fibre Polymers 0.000 description 6
- 235000018185 birch Nutrition 0.000 description 6
- 235000018212 birch Nutrition 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 239000002025 wood fiber Substances 0.000 description 6
- 241000208140 Acer Species 0.000 description 4
- 241000183024 Populus tremula Species 0.000 description 4
- 229920001807 Urea-formaldehyde Polymers 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000005011 phenolic resin Substances 0.000 description 4
- 229920001568 phenolic resin Polymers 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 241000894007 species Species 0.000 description 4
- 239000002916 wood waste Substances 0.000 description 4
- 240000005020 Acaciella glauca Species 0.000 description 2
- 241000218645 Cedrus Species 0.000 description 2
- 241000218631 Coniferophyta Species 0.000 description 2
- 210000002370 ICC Anatomy 0.000 description 2
- 241000219071 Malvaceae Species 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 241000219000 Populus Species 0.000 description 2
- 241000219492 Quercus Species 0.000 description 2
- 235000016976 Quercus macrolepis Nutrition 0.000 description 2
- 241001106462 Ulmus Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000009313 farming Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 229920000591 gum Polymers 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000750 progressive Effects 0.000 description 2
- 230000002035 prolonged Effects 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 239000003247 radioactive fallout Substances 0.000 description 2
- 235000003499 redwood Nutrition 0.000 description 2
- 230000000717 retained Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/06—Manufacture of central layers; Form of central layers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
- Y10T428/24322—Composite web or sheet
- Y10T428/24331—Composite web or sheet including nonapertured component
- Y10T428/24339—Keyed
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
- Y10T428/24992—Density or compression of components
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249962—Void-containing component has a continuous matrix of fibers only [e.g., porous paper, etc.]
- Y10T428/249964—Fibers of defined composition
- Y10T428/249965—Cellulosic
- Y10T428/249966—Plural cellulosic components
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/253—Cellulosic [e.g., wood, paper, cork, rayon, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
Definitions
- This invention relates to a composite wood veneer panel, it being understood that wood veneer is, for convenience, hereinafter called venecn ⁇
- One purpose of my invention is to provide a veneer panel having a compressed core consisting of bonded ligno-cellulose particles, or fibers.
- Another purpose is to provide a veneer board or panel in which veneers containing open defects are used.
- the product should be considered initially against the background of the industry.
- the present invention seeks to alleviate the industrial situation described above. It aims at the complete utilizatlion of the veneers that may contain open defects by plugging the defects of the veneers automatically durng manufacture, and in such a way that defects of any iize, shape or number can be accepted in the surface /eneer used.
- Figure 1 is a perspective view, with parts in section, illustrating my product with an open defect filled by the core material
- Figure 2 illustrates my product in section, on an enlarged scale, illustrating a particle core, and with no defect showing in the veneer;
- Figure 3 is a similar section, illustrating an open defect lled with fibrous core material
- Figure 4 illustrates a 5-ply construction with a defect in the cross-banding, lilled by the core particles.
- a composite fibrous core which may consist, for example, of ligno-cellulose particles such as hammermilled wood waste shavings, fibers or strands, bonded together with a binder under heat and pressure.
- the core may have a density comparable with that of the face veneers I usc, although the density may be higher.
- the core particles l employ may come from wood waste, and cost much less than the currently used veneer cores of the same thickness.
- the particles are bonded together with any suitable binder such as a protein adhesive or a synthetc resin of any type suitable for bonding wood such as urea or phenolic resins.
- I may advantageously employ the fines for the surface in contact with the veneer. These surface fines may be produced by rejecting all particles retained on a l0mesh screen, the larger particles being used in the interior of the core. By this I eliminate telegraphing of coarse particle through the veneer. I nd it advantageous to have iifty percent or more of the core particles in Contact with the veneer of a fineness to pass a ZO-mesh screen.
- the cores are made of line wood fibers or liber bundles bonded together, the best results are obtained if the fibers lie largely in planes generally parallel to the panel faces.
- wood particles or shavings I obtain a satisfactory product with phenolic resin or urea resin binders used in conjunction with wood particles that have passed through a l-mesh screen. when the binders used are in a proportion of to 10% of the weight of the wood particles.
- resin-coated wood bers are used and the core density is between 0.7 and 1.0, the resin may be only 2% to 3% of the weight of fibers, with the resin coating the fibers.
- My product permits good knothole filling, with the material of the core, if the hot plate pressure used compresses the core to a density slightly exceeding the density of the wood used.
- the density of the core always exceeds the density of the natural wood of the core particles, if low density woods are used.
- woods having a density below about 0.5 in order to obtain some com pression and yet produce a low density panel, that is. a panel having a density of 0.5 to 0.7.
- low density panel I may use a wide variety of woods for my core material. ln fact, almost any species may bc employed. When making a low density panel I prefer, however, the use, for the core material, of low density woods such as cedar, aspen, Cottonwood, and redwood. By low density woods, l mean woods whose average density at l2% moisture is less than 0.5.
- Superior bonding of green veneer to the particle core is obtained when using dry adhesive such as powdered resins applied to the veneer.
- dry adhesive such as powdered resins applied to the veneer.
- the steam generated in the hot press causes the resin or binder to flow into the spaces between the particles or fibers near the surface. thereby providing a high density hard surface zone which functions like cross-banding veneer in a 5ply plywood panel. I thereby provide an excess of bonding material in the outer portions of the core, the thin veneer faces being firmly bonded to such outer portions of the core, the inner portion of the core having a smaller ratio of bonding component to the wood particles.
- the openings are filled with core material.
- botanic fibers to be advantageous. with some of the fibers or fiber bundles of the core material extending from the core to the surface of the panel.
- botanic fibers l mean the organic fibers of which wood is composed, or bundles of the same.
- the boards may be of various sizes, and may be of substantial width and length. As examples of practical dimensions I may mention boards of 4 feet by 8 feet. In making boards of such size l find it especially important to be able to use the face veneers in one piece. This is practically impossible with the use of veneers of the specified thickness, that are dry, as it is practically impossible to produce enc-piece dry veneers of this size. without splitting them.
- the veneer In my product, when green vencer is used, and it is subjected to pressure in the course of making the product, the veneer is of the same across-the-grain width as in the green condition. Under many circumstances, and with many woods, it is of substantially' less than its original green thickness. However, the veneers of some porous woods that are heavy and dense, such as birch or maple, compress much less than veneers of some of the softer. porous woods, such as aspen or basswood. In the case of birch. for example, the compression may be only about .003 of an inch in veneers .015 of an inch thick. In the case of soft veneers, where the original thickness may be 0.30 of an inch, the same veneer, subjected to the condition of the manufacture of my product, may be only about .0l7 of an inch thick.
- 1 indicates a core, in my completed product, of particles or fibers consolidated by the above-described application of heat and pressure.
- the density of this core ranges, generally, from .5 to 1.0.
- 2, 2 indicate the zones in which the ratio of bonding component to wood particles is substantially higher than in the interior of the panel.
- 3, 3 indicate the surface layers of face veneer.
- 4 indicates an open defect or aperture in one of the face vener surface layers 3.
- 5 indicates the mass of core material which fills the fault 4, and has a flat outer surface flush with the flat outer surface of the layer 3 in which a fault 4 occurs.
- the binder for the veneer is applied to the pre-pressed core mat, the results are as shown in Figures l and 3, and the high resin zone extends into the open defect in the veneer. If, however, the adhesive is applied to the veneer, the high resin zone stops at the edge of the defect and the lower resin oore extends into the defect. In the latter case there is less danger of bonding to the metal plate at the defect.
- Figure 2 represents a substantial enlargement of part of the structure of Figure l.
- one of the surface layers of face veneer 3 is illustrated in substantially larger scale than in the more or less diagrammatic showing of Figure l.
- the outer surface 3a is fiat and plane, whereas the inner surface 3b is not strictly parallel with the outer surface, and is not truly plane.
- the irregularities may be somewhat exaggerated in the drawing, but what I wish to indicate is that, to the extent that there are irregularities or differences of thickness in the veneer, they are taken up in the interior of my product.
- Some ring-porous veneers are of uneven densities in the annual ring structure and compress unevenly because of such differences in density. Such compression does not cause any surface unevenness.
- the fiat metal surface with which the veneer is in contact during the manufacture of the product provides the true, plane, outer surface 3a desired for finishing, and the core follows the uneven inner surface of the veneer.
- Figure l may be taken diagrammatically, in that I may employ core particles such as are indicated at 6 in Figure 2, or core fibers or strands such as are indicated at 7 in Figure 3.
- core particles such as are indicated at 6 in Figure 2
- core fibers or strands such as are indicated at 7 in Figure 3.
- strands mean thin, narrow, long shavings with parallel surfaces. I may also use ordinary thin shavings.
- Figure 3 I illustrate, at 8, an open defect in the face veneer 3 into which the fibers or particles extend.
- Figure 3 is to be taken as generally diagrammatic, it is ntended to indicate a disposition of the fibers or fiber Jundlcs or strands or shavings in general parallelism with he outer surface 3a of the final product.
- I indicate, also, n Figures 2 and 3, one of the outer zones of the core in vhich the ratio of the bonding component to the wood articles or fibers is substantially higher than in the ineror of the core. This zone is indicated at 6a in Figlre 2, and at 7a in Figure 3.
- I illustrate substantially the board as hown in Figure l, except that, in the place of single ayers of face veneer, I illustrate at one face of the prodct a cross-banding veneer layer l0, and at the other ace a cross-banding layer 11. It will be noted, also, that show the cross-banding layer of veneer 10 as having an pen defect 12 filled with core material 13, this core ma- :rial being covered by the face veneer 3.
- the fibrous wood particles the core may be varied substantially in size and shape.
- the type of bonding components used may be widely ried, as may the distribution of the bonding component the core. It is important, however, that the outer surces of the board be flat and parallel, even though the ner surfaces of the veneer layers may contact or abut e core with a surface departing substantially from the me. Irregularities of compression of the veneer layers e taken up within the interior of the board.
- the core bonded together and is bonded to the veneer layers, d, preferably, the ratio of the bonding component to e wood particles is higher adjacent the veneer layers in in the interior of the panel. While I speak generally thin veneers, I prefer to use veneers of less than 7&0 an inch in thickness, and have found veneers of 1,4m of inch in thickness to be practical.
- the thickness of the panel can be controlled by first sanding or planing the back of each half and the thin veneer faces need not be excessively sanded.
- a composite wood veneer panel including a brous ligno-cellulose particle core consisting of fibrous woody particles bonded together, and a thin porous wood veneer layer bonded to a surface of the core, the veneer layer being dry but having the same across-the-grain width as the width of the same veneer in green condition, the veneer layer having a thickness of the order of M50 to 1/100 of an inch, the core including a surface zone more dense than the interior of the core, at least 50% of the particles in contact with the veneer having a fineness such as to pass a 20-mesh screen, the ratio of bonding component to wood particles in the surface zone being higher than the same ratio in the interior of the core, the veneer layer being bonded to the exterior of said dense surface zone, the outer surface of the veneer layer being plane, the inner surface in contact with the core ⁇ being uneven, whereby inequalities in thickness of the veneer layer are taken up by the outer surface of the core.
- a composite wood veneer panel including a fibrous ligne-cellulose particle core consisting of fibrous woody particles bonded together, and a thin porous angiosperrn wood veneer surface layer bonded to a surface of the core, the veneer layer being dry but having the same across-the-grain width as in the green condition, the veneer layer having a thickness of the order of 1/30 to A00 of an inch, the core including a surface zone more dense than the interior of the core, at least 50% of the particles in contact with the veneer having a fineness such as to pass a 20-mesh screen, the ratio of bonding component to wood particles in the surface zone being higher than the same ratio in the interior of the core, the veneer layer being bonded to the exterior of said dense surface zone, the wood from which the core particles are derived having a density less than 0.5, the core exceeding in density the wood from which the core particles are derived.
- a composite wood veneer panel including a fibrous ligno-cellulose particle core consisting of fibrous woody particles bonded together, and a thin, porous angiosperm wood veneer surface layer bonded to a surface of the core, the veneer layer being dry but having the same across-the-grain width as in the green condition, the veneer layer having a thickness of the order of l@ to M00 of an inch, the core including a surface zone more dense than the interior of the core, at least 50% of the particles in contact with the veneer having a fineness such as to pass a 20mesh screen, the ratio of bonding cornponent to wood particles in the surface zone being higher than the sume ratio in the interior of the core, the veneer layer Ibeing bonded to the exterior of said dense surface zone, the wood from which the core particles are derived having a density less than 0.5 and the core having a density of 0.5 to 0.7.
- a composite wood veneer panel including a fibrous ligno-cellulose particle core consisting of fibrous Woody particles bonded together, and a thin wood veneer layer of the angiosperm species bonded to a surface of the core, the veneer layer having a thickness of the order of V50 to A00 of an inch, the veneer layer being compressed so as to have a thickness less than its original wood thickness, the veneer layer being dry but having the same across-the-grain width as the width of the same veneer in the green condition, the core including n surface zone more dense than the interior ot' the core, at leaf-,L 50% of the particles in contact with the veneer having a fineness such as to pass a 20-mesh screen, the ratio of bonding component to wood particles in the surface zone being higher than the same ratio in the interior of the core, the veneer layer being bonded to the ext-:rior of said dense surface zone, and having a density of 0.7 to 1.0.
- a composite wood veneer panel including two cornponents bonded back to back, each component including a fibrous ligne-cellulose particle core consisting of fibrons woody particles bonded together, and a thin potous angiosperm wood veneer layer bonded to a surface of the core, the veneer layer being dry but having the same across-the-grain width as the width of the same veneer in green condition, the veneer layer having a thickness of the order of 1/0 to 1,6m, of an inch.
- the core including a surface zone more dense than the interior of the core, at least 50% of the particles in contact with the veneer having a fineness such as to pass a 20-mesh screen, the ⁇ ratio of bonding component to wood particles in the surface zone being higher than the same ratio in the interior of the core, the veneer layer being bonded to the exterior of said dense surface zone, the Outer surface of the veneer layer being plane, the cores of the two components being bonded together so that the veneer layer of each component is exposed.
Description
Apnl 22, 1958 A. ELMENDORF 2,831,793
COMPOSITE VENEER 0R PLYwooD PANEL Filed Nov. 2, 1955 I? vez? 02 ./rmz'i? Wife/M7029@ United States Patent O 2,831,793 COMPOSITE VENEER R PLYWOOD PANEL Armin Elmendorf, Winnetka, lll. Application November 2, 1955, Serial No. 544,575 13 Claims. (Cl. 154-453) This invention relates to a composite wood veneer panel, it being understood that wood veneer is, for convenience, hereinafter called venecn` One purpose of my invention is to provide a veneer panel having a compressed core consisting of bonded ligno-cellulose particles, or fibers.
Another purpose is to provide a veneer board or panel in which veneers containing open defects are used.
The present application is a continuation-in-part of my copending application, Serial No. 393,028, filed November 19, 1953, for Composite Veneer or Plywood Panels, now abandoned, and describes and claims the product of my copending application, Serial No. 538,661l filed October 5, 1955, for Process for Manufacturing Veneer Panels, which is a continuation-impart of my earlier application, Serial No. 366,968, filed July 9, 1953, now abandoned.
The product should be considered initially against the background of the industry.
The prolonged great demand for hardwood plywood for furniture, doors and wall paneling has now drained the forests of all the major countries of the world of most of their virgin timber suitable for conversion into veneer and plywood, and it will be many years before tree farming will again yield logs of the size and quality of those that have been consumed for that purpose. The second growth timber that must now be cut in ever increasing quantity contains many branches that reveal themselves as knots in the veneer, and if the knots are defective they generally fall out, causing open defects. Checks in the log ends, due to drying before the veneers can be cut, cause splits in the veneer, and such splits, when wide, are also revealed as open defects.
In conventional hardwood plywood manufacture, the veneers are dried and open defects are generally clipped out, thereby causing a serious waste, regretted by every plywood manufacturer, but accepted because all current processes of plywood manufacture require their removal. While open defects in the faces are permitted in the lowest grades of plywood, their presence greatly degrades the plywood. Open and exposed defects in the veneer core of 3-ply panels and in the cross-banding of 5-ply panels cannot be tolerated if the panels are given a high polish finish, because they show through.
The present invention seeks to alleviate the industrial situation described above. It aims at the complete utilizalion of the veneers that may contain open defects by plugging the defects of the veneers automatically durng manufacture, and in such a way that defects of any iize, shape or number can be accepted in the surface /eneer used.
Mending of open defects is becoming of increasing mportance on account of the progressive lowering of the luality of the logs available for conversion into veneer. l`he present invention is aimed at improving the situation n the hardwood plywood industry. In the manufacture )f the new plywood or veneered panels ot this invention 2,831,793 Patented Apr. 22, 1958 ICC the plugging of the surface layer openings is done simultaneously with the formation of the board.
It is not necessary to indicate any specific mechanism for making my product, as I employ equipment well known in the field. I illustrate typical products as follows, wherein:
Figure 1 is a perspective view, with parts in section, illustrating my product with an open defect filled by the core material;
Figure 2 illustrates my product in section, on an enlarged scale, illustrating a particle core, and with no defect showing in the veneer;
Figure 3 is a similar section, illustrating an open defect lled with fibrous core material; and
Figure 4 illustrates a 5-ply construction with a defect in the cross-banding, lilled by the core particles.
Like parts are indicated by like symbols throughout the specification and drawings.
Considering, first, the product of Figure 1, I use, in place of the middle veneer ply of conventional plywood, a composite fibrous core which may consist, for example, of ligno-cellulose particles such as hammermilled wood waste shavings, fibers or strands, bonded together with a binder under heat and pressure. The core may have a density comparable with that of the face veneers I usc, although the density may be higher. The core particles l employ may come from wood waste, and cost much less than the currently used veneer cores of the same thickness. The particles are bonded together with any suitable binder such as a protein adhesive or a synthetc resin of any type suitable for bonding wood such as urea or phenolic resins. When using hammermilled particles or strands or shavings I may advantageously employ the fines for the surface in contact with the veneer. These surface fines may be produced by rejecting all particles retained on a l0mesh screen, the larger particles being used in the interior of the core. By this I eliminate telegraphing of coarse particle through the veneer. I nd it advantageous to have iifty percent or more of the core particles in Contact with the veneer of a fineness to pass a ZO-mesh screen.
l have also found that great manufacturing economies result if the very thin veneers required are used green. I have found that satisfactory filling of open defects becomes possible if the face veneers are less than the standard thicknesses used throughout the plywood industry today, namely, 1&4 of an inch and l/g of an inch. My results are best achieved if the face veneers are less than ihn of an inch, herein referred to as very thin veneers. l have found veneers of MM of an inch highly satisfactory. My results are also generally best achieved if the veneers entering the press have a moisture content above the fiber saturation point, that is, above 25%.
ln view of the fact that, in my product, the core veneers are completely eliminated, and the amount of wood used for the two face veneers together is no more than a single ply of veneer in conventional plywood, and since single layers of thin veneer can be used at each face of my board, very substantial economies are achieved, resulting in a significant conservation of the timber supply. If veneer cores are used, in combination with their veneer faces, differences in density of the summer wood and the spring wood of an annual ring of the veneer core are liable to telegraph through the face veneers. In my finished board, the exposed veneer surfaces are smooth and fiat, and therefore require very little sanding so that veneers as thin as 1,4100 of an inch may be used. Where the veneer in contact with the fibrous core is of uneven thickness or density, or is roughly cut, the inequalities are taken up in the core and are not exteriorly apparent.
When the cores are made of line wood fibers or liber bundles bonded together, the best results are obtained if the fibers lie largely in planes generally parallel to the panel faces. When wood particles or shavings are used, I obtain a satisfactory product with phenolic resin or urea resin binders used in conjunction with wood particles that have passed through a l-mesh screen. when the binders used are in a proportion of to 10% of the weight of the wood particles. When resin-coated wood bers are used and the core density is between 0.7 and 1.0, the resin may be only 2% to 3% of the weight of fibers, with the resin coating the fibers.
My product permits good knothole filling, with the material of the core, if the hot plate pressure used compresses the core to a density slightly exceeding the density of the wood used. In practice, in my product, the density of the core always exceeds the density of the natural wood of the core particles, if low density woods are used. For the core I therefore prefer to use woods having a density below about 0.5 in order to obtain some com pression and yet produce a low density panel, that is. a panel having a density of 0.5 to 0.7.
I may use a wide variety of woods for my core material. ln fact, almost any species may bc employed. When making a low density panel I prefer, however, the use, for the core material, of low density woods such as cedar, aspen, Cottonwood, and redwood. By low density woods, l mean woods whose average density at l2% moisture is less than 0.5.
I have found a striking difference in the results obtained when thin green face veneers of angiosperrn species such as birch, elm, ash, maple, gum, and oak are used in place of gymnosperm species such as pine and nr, apparently due to the presence of pores in the former, the so-called hardwoods, whereas the latter contain no pores. The pores in hardwood veneers appear to permit ventilation or steam escape even though they are mainly parallel to the veneer faces, and so prevent blistering and veneer checking. The nonporous Woods are generally unsatisfactory for face veneers because they result in defective panels.
Superior bonding of green veneer to the particle core is obtained when using dry adhesive such as powdered resins applied to the veneer. The steam generated in the hot press causes the resin or binder to flow into the spaces between the particles or fibers near the surface. thereby providing a high density hard surface zone which functions like cross-banding veneer in a 5ply plywood panel. I thereby provide an excess of bonding material in the outer portions of the core, the thin veneer faces being firmly bonded to such outer portions of the core, the inner portion of the core having a smaller ratio of bonding component to the wood particles.
If the veneer contains open defects, as indicated in Figures l and 3, the openings are filled with core material. I nd the use of botanic fibers to be advantageous. with some of the fibers or fiber bundles of the core material extending from the core to the surface of the panel. By botanic fibers l mean the organic fibers of which wood is composed, or bundles of the same.
When green veneers are bonded, by conventional procedure, to conventional low density wood fiber boards of the insulation board type. they frequently check in service, due apparently to insufficient constraint at the inner surface. I have found that thin, green face veneers do not shrink or check during or after pressing and drying under pressure, when such veneers are bonded to the core of my product. Their width remains the same as when green. and there is no subsequent checking of the face veneers under any changes in humidity. Moreover, the steam generated from the veneer during pressing in a hot plate press plasticizes and softens the veneer so that it may be compressed by the hot plate pressure. The plasticizing and compressing of the thin face vencer. in contact with the smooth hot plate surfaces of my process. produces a superior surface for subsequent finishing with lacquers or other finishes.
In the manufacture of my product I subject the assembled components to simultaneous heat and pressure. thereby forcing adhesive between the particles or fibers near the surface to form a hard surface zone, and, at the same time, obtain the bonding together of the particles of the core, the plasticizing and compressing ofthe veneer. the drying of thc veneer, and the bonding of the vencer to the cere. lt should be kept in mind that a very smooth outer surface of the veneer results from the subjection of the vcnccr to pressure at a time when it is directly in contact with n smooth metal plate. With some veneers a pressure of 1.50 p. s. i. is adequate to compress them if they contain moisture in excess of 25%. If open defects are present in the veneer the Filling of the defects also takes place simultaneously, with the above mentioned results. lt will be clear that great savings in manufac turing costs over conventional plywood manufacture are thereby obtained.
The boards may be of various sizes, and may be of substantial width and length. As examples of practical dimensions I may mention boards of 4 feet by 8 feet. In making boards of such size l find it especially important to be able to use the face veneers in one piece. This is practically impossible with the use of veneers of the specified thickness, that are dry, as it is practically impossible to produce enc-piece dry veneers of this size. without splitting them.
In my product, when green vencer is used, and it is subjected to pressure in the course of making the product, the veneer is of the same across-the-grain width as in the green condition. Under many circumstances, and with many woods, it is of substantially' less than its original green thickness. However, the veneers of some porous woods that are heavy and dense, such as birch or maple, compress much less than veneers of some of the softer. porous woods, such as aspen or basswood. In the case of birch. for example, the compression may be only about .003 of an inch in veneers .015 of an inch thick. In the case of soft veneers, where the original thickness may be 0.30 of an inch, the same veneer, subjected to the condition of the manufacture of my product, may be only about .0l7 of an inch thick.
I find it important, in my product, to have a zone in the wood particle core, adjacent the veneer, in which the ratio of the bonding component to the wood particles is substantially higher than in the interior of the core. This result is obtained, in my product, when some of the bonding adhesive used for the veneer is forced into the spaces between the wood bers or particles at or near the surface. This result appears to be facilitated by the steam generated from the moisture of the green veneers, so that a hard foundation layer results, to which the face veneer is bonded. Itis the strength of this zone which prevents the veneer from checking.
Referring to the drawings in somewhat greater detail. 1 indicates a core, in my completed product, of particles or fibers consolidated by the above-described application of heat and pressure. The density of this core ranges, generally, from .5 to 1.0. 2, 2 indicate the zones in which the ratio of bonding component to wood particles is substantially higher than in the interior of the panel. 3, 3 indicate the surface layers of face veneer. In Figure l, 4 indicates an open defect or aperture in one of the face vener surface layers 3. 5 indicates the mass of core material which fills the fault 4, and has a flat outer surface flush with the flat outer surface of the layer 3 in which a fault 4 occurs. If the binder for the veneer is applied to the pre-pressed core mat, the results are as shown in Figures l and 3, and the high resin zone extends into the open defect in the veneer. If, however, the adhesive is applied to the veneer, the high resin zone stops at the edge of the defect and the lower resin oore extends into the defect. In the latter case there is less danger of bonding to the metal plate at the defect.
Figure 2 represents a substantial enlargement of part of the structure of Figure l. In it one of the surface layers of face veneer 3 is illustrated in substantially larger scale than in the more or less diagrammatic showing of Figure l. It will be evident that the outer surface 3a is fiat and plane, whereas the inner surface 3b is not strictly parallel with the outer surface, and is not truly plane. The irregularities may be somewhat exaggerated in the drawing, but what I wish to indicate is that, to the extent that there are irregularities or differences of thickness in the veneer, they are taken up in the interior of my product. Some ring-porous veneers are of uneven densities in the annual ring structure and compress unevenly because of such differences in density. Such compression does not cause any surface unevenness. The fiat metal surface with which the veneer is in contact during the manufacture of the product provides the true, plane, outer surface 3a desired for finishing, and the core follows the uneven inner surface of the veneer.
As to all of the figures, it will be understood that I do not wish to limit myself, or intend to limit myself, to any particular type or range of particles, except so far as I limit myself specifically in my claims. Figure l may be taken diagrammatically, in that I may employ core particles such as are indicated at 6 in Figure 2, or core fibers or strands such as are indicated at 7 in Figure 3. By strands I mean thin, narrow, long shavings with parallel surfaces. I may also use ordinary thin shavings. [n Figure 3, I illustrate, at 8, an open defect in the face veneer 3 into which the fibers or particles extend. While Figure 3 is to be taken as generally diagrammatic, it is ntended to indicate a disposition of the fibers or fiber Jundlcs or strands or shavings in general parallelism with he outer surface 3a of the final product. I indicate, also, n Figures 2 and 3, one of the outer zones of the core in vhich the ratio of the bonding component to the wood articles or fibers is substantially higher than in the ineror of the core. This zone is indicated at 6a in Figlre 2, and at 7a in Figure 3.
In Figure 4, I illustrate substantially the board as hown in Figure l, except that, in the place of single ayers of face veneer, I illustrate at one face of the prodct a cross-banding veneer layer l0, and at the other ace a cross-banding layer 11. It will be noted, also, that show the cross-banding layer of veneer 10 as having an pen defect 12 filled with core material 13, this core ma- :rial being covered by the face veneer 3.
It will be realized that I have described and shown erein a practical, efficient, and useful product. It will e realized, however, that the details of the product and s components are subject to substantial variation with- Jt departing from the spirit of my invention. I therere wish my description and drawings to be taken as in broad sense illustrative and diagrammatic, rather than 1 limiting me to the specific disclosure herein. For
iample, a wide variety of woods may be employed, havg different compressibility. The fibrous wood particles the core may be varied substantially in size and shape. The type of bonding components used may be widely ried, as may the distribution of the bonding component the core. It is important, however, that the outer surces of the board be flat and parallel, even though the ner surfaces of the veneer layers may contact or abut e core with a surface departing substantially from the me. Irregularities of compression of the veneer layers e taken up within the interior of the board. The core bonded together and is bonded to the veneer layers, d, preferably, the ratio of the bonding component to e wood particles is higher adjacent the veneer layers in in the interior of the panel. While I speak generally thin veneers, I prefer to use veneers of less than 7&0 an inch in thickness, and have found veneers of 1,4m of inch in thickness to be practical.
[n the manufacture of panels inch or more in thickis, and where accuracy of thickness is important, I
`fer to bond two panels, each having veneer on one face, back to back thereby producing a 2-ply core with a layer of adhesive between the plies. In that case the thickness of the panel can be controlled by first sanding or planing the back of each half and the thin veneer faces need not be excessively sanded.
I claim:
l. A composite wood veneer panel including a brous ligno-cellulose particle core consisting of fibrous woody particles bonded together, and a thin porous wood veneer layer bonded to a surface of the core, the veneer layer being dry but having the same across-the-grain width as the width of the same veneer in green condition, the veneer layer having a thickness of the order of M50 to 1/100 of an inch, the core including a surface zone more dense than the interior of the core, at least 50% of the particles in contact with the veneer having a fineness such as to pass a 20-mesh screen, the ratio of bonding component to wood particles in the surface zone being higher than the same ratio in the interior of the core, the veneer layer being bonded to the exterior of said dense surface zone, the outer surface of the veneer layer being plane, the inner surface in contact with the core `being uneven, whereby inequalities in thickness of the veneer layer are taken up by the outer surface of the core.
2. A composite wood veneer panel including a fibrous ligne-cellulose particle core consisting of fibrous woody particles bonded together, and a thin porous angiosperrn wood veneer surface layer bonded to a surface of the core, the veneer layer being dry but having the same across-the-grain width as in the green condition, the veneer layer having a thickness of the order of 1/30 to A00 of an inch, the core including a surface zone more dense than the interior of the core, at least 50% of the particles in contact with the veneer having a fineness such as to pass a 20-mesh screen, the ratio of bonding component to wood particles in the surface zone being higher than the same ratio in the interior of the core, the veneer layer being bonded to the exterior of said dense surface zone, the wood from which the core particles are derived having a density less than 0.5, the core exceeding in density the wood from which the core particles are derived.
3. A composite wood veneer panel including a fibrous ligno-cellulose particle core consisting of fibrous woody particles bonded together, and a thin, porous angiosperm wood veneer surface layer bonded to a surface of the core, the veneer layer being dry but having the same across-the-grain width as in the green condition, the veneer layer having a thickness of the order of l@ to M00 of an inch, the core including a surface zone more dense than the interior of the core, at least 50% of the particles in contact with the veneer having a fineness such as to pass a 20mesh screen, the ratio of bonding cornponent to wood particles in the surface zone being higher than the sume ratio in the interior of the core, the veneer layer Ibeing bonded to the exterior of said dense surface zone, the wood from which the core particles are derived having a density less than 0.5 and the core having a density of 0.5 to 0.7.
4. The product of claim 1, in which the veneer surface layer is compressed to less than its original thickness.
5. The product of claim 1, in which the veneer surface layer has openings into which the core extends, to an outer plane flush with the outer surface of the veneer layer.
6. The product of claim 2, in which the veneer surface layer has openings into which the core extends, to an outer plane ush with the outer surface of the veneer layer.
7. The product of claim l, in which a layer of surface veneer is bonded to each side surface of the core.
8. The product of claim 2, in which a layer of surface veneer is bonded to each side surface of the core.
9. A composite wood veneer panel including a fibrous ligno-cellulose particle core consisting of fibrous Woody particles bonded together, and a thin wood veneer layer of the angiosperm species bonded to a surface of the core, the veneer layer having a thickness of the order of V50 to A00 of an inch, the veneer layer being compressed so as to have a thickness less than its original wood thickness, the veneer layer being dry but having the same across-the-grain width as the width of the same veneer in the green condition, the core including n surface zone more dense than the interior ot' the core, at leaf-,L 50% of the particles in contact with the veneer having a fineness such as to pass a 20-mesh screen, the ratio of bonding component to wood particles in the surface zone being higher than the same ratio in the interior of the core, the veneer layer being bonded to the ext-:rior of said dense surface zone, and having a density of 0.7 to 1.0.
10. A composite wood veneer panel including two cornponents bonded back to back, each component including a fibrous ligne-cellulose particle core consisting of fibrons woody particles bonded together, and a thin potous angiosperm wood veneer layer bonded to a surface of the core, the veneer layer being dry but having the same across-the-grain width as the width of the same veneer in green condition, the veneer layer having a thickness of the order of 1/0 to 1,6m, of an inch. the core including a surface zone more dense than the interior of the core, at least 50% of the particles in contact with the veneer having a fineness such as to pass a 20-mesh screen, the `ratio of bonding component to wood particles in the surface zone being higher than the same ratio in the interior of the core, the veneer layer being bonded to the exterior of said dense surface zone, the Outer surface of the veneer layer being plane, the cores of the two components being bonded together so that the veneer layer of each component is exposed.
11. A composite wood veneer panel as set forth in claim 1, wherein the fibrous woody particles in the interior of the core include wood shavings.
l2. A composite wood veneer panel as set forth in claim I, wherein the fibrous woody particles in the interior of the core include wood fiber bundles bonded together.
13. A composite wood veneer panel as set forth in iaim 1, wherein the fibrous woody particles in the iniuiior of the core include wood strands.
References Cited in the le of this patent UNlTED STATES PATENTS 2,066,734 Loetscher Jan. 5, 1937 2,124,921 Lederer July 26, 1938 2,337,792 Yokell Dec. 28, 1943 2.356,625 Schumann Aug. 22, 1947 2,419,614 Weich Apr. 29, 1947 2,5 4,318 Elmendorf Iuly 4, 1950 2,542,025 Goss Feb. 20, 1951 2,545,603 Beyers et ai Mar. 20, 1951 2,642,371 Fahrni June 16, 1953 2,698,271 Clark Dec. 28, 1954 2,708,296 Soehner May 17, 1955
Claims (1)
1. A COMPOSITE WOOD VENEER PANEL INCLUDING A FIBROUSS LIGNO-CELLULOSE PARTICLE CORE CONSISTING OF FIBROUS WOODY PARTICLES BONDED TOGETHER, AND A THIN POROUS WOOD VENEER LAYER BONDED TO A SURFACE OF THE CORE, THE VENEER LAYER BEING DRY BUT HAVING THE SAME ACROSS-THE-GRAIN WIDTH AS THE WIDTH OF THE SAME VENEER IN GREEN CONDITION, THE VENEER LAYER HAVING A THICKNESS OF THE ORDER OF 1/30, TO 1/100 OF AN INCH, THE CORE INCLUDING A SURFACE ZONE MORE DENSE THAN THE INTERIOR OF THE CORE, AT LEAST 50% OF THE PARTICLES IN CONTACT WITH THE VENEER HAVING A FINENESS SUCH AS TO PASS A 20-MESH SCREEN, THE RATIO OF BONDING COMPONENT TO WOOD PARTICLES IN THE SURFACE ZONE BEING HIGHER THAN THE SAME RATIO IN THE INTERIOR OF THE CORE, THE VENEER LAYER BEING BONDED TO THE EXTERIOR OF SAID DENSE SURFACE ZONE, AND OUTER SURFACE OF THE VENEER LAYER BEING PLANE, THE INNER SURFACE IN CONTACT WITH THE CORE BEING UNEVEN, WHEREBY INEQUALITIES IN THICKNESS OF THE VENEER LAYER ARE TAKEN UP BY THE OUTER SURFACE OF THE CORE.
Publications (1)
Publication Number | Publication Date |
---|---|
US2831793A true US2831793A (en) | 1958-04-22 |
Family
ID=3446983
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US2831793D Expired - Lifetime US2831793A (en) | Composite veneer or plywood panel |
Country Status (1)
Country | Link |
---|---|
US (1) | US2831793A (en) |
Cited By (66)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3101489A (en) * | 1959-02-17 | 1963-08-27 | Continental Copper & Steel Ind | Plastic boat construction |
US3114244A (en) * | 1958-12-29 | 1963-12-17 | Joseph R Silver | Retaining wall |
US3202743A (en) * | 1961-09-06 | 1965-08-24 | Elmendorf Armin | Method of forming a composite panel |
US3287203A (en) * | 1962-03-14 | 1966-11-22 | Elmendorf Res Inc | Hardwood flooring |
US5059472A (en) * | 1985-10-29 | 1991-10-22 | Oy Partek Ab | Multi-ply wood product |
US5242888A (en) * | 1990-01-25 | 1993-09-07 | Arkwright, Incorporated | Polymeric matrix for thermal transfer recording |
US5425976A (en) * | 1990-04-03 | 1995-06-20 | Masonite Corporation | Oriented strand board-fiberboard composite structure and method of making the same |
US5470631A (en) * | 1990-04-03 | 1995-11-28 | Masonite Corporation | Flat oriented strand board-fiberboard composite structure and method of making the same |
EP0688639A2 (en) | 1994-06-20 | 1995-12-27 | Masonite Corporation | Molded wood composites having non-blistering profile with uniform paintability and nesting |
US5736218A (en) * | 1993-05-31 | 1998-04-07 | Yamaha Corporation | Wood board and a flooring material made therefrom |
US6103333A (en) * | 1998-05-22 | 2000-08-15 | Keith; George A. | Wood veneer laminated chair mat |
US6200687B1 (en) | 1998-09-11 | 2001-03-13 | Masonite Corporation | Molded wood composites having improved horizontal contact nesting profile |
US6461743B1 (en) | 2000-08-17 | 2002-10-08 | Louisiana-Pacific Corp. | Smooth-sided integral composite engineered panels and methods for producing same |
US6479128B1 (en) | 1999-11-24 | 2002-11-12 | Masonite Corporation | Fine textured single piece one panel molded profile |
US6602610B2 (en) | 1998-09-11 | 2003-08-05 | Masonite Corporation | Molded wood composites having improved horizontal contact nesting profile |
US20040219382A1 (en) * | 2003-04-30 | 2004-11-04 | Glenn Davina | Molded skin with curvature |
US20040229010A1 (en) * | 2003-02-24 | 2004-11-18 | Clark Randy Jon | Thin-layer lignocellulose composites having increased resistance to moisture and methods of making the same |
US20050028921A1 (en) * | 2003-07-01 | 2005-02-10 | Stroup Jon Christopher | Methods and systems for the automated manufacture of composite doors |
US20050268571A1 (en) * | 2004-06-08 | 2005-12-08 | Tryggvi Magnusson | Hardwood flooring board |
US20060000173A1 (en) * | 2004-06-18 | 2006-01-05 | Edstrom Brian D | Composite structures having the appearance of knotty wood and methods of making such structures |
US20060070325A1 (en) * | 2004-04-20 | 2006-04-06 | Tryggvi Magnusson | Hardwood flooring board |
US20060093745A1 (en) * | 2004-09-30 | 2006-05-04 | Nicholson John W | Treatment of wood for the production of building structures and other wood products |
US20060272253A1 (en) * | 2004-11-24 | 2006-12-07 | Wolf Steven J | Composite garage doors and processes for making such doors |
US7185468B2 (en) | 2002-10-31 | 2007-03-06 | Jeld-Wen, Inc. | Multi-layered fire door and method for making the same |
US20070112572A1 (en) * | 2005-11-15 | 2007-05-17 | Fail Keith W | Method and apparatus for assisting vision impaired individuals with selecting items from a list |
US20070110979A1 (en) * | 2004-04-21 | 2007-05-17 | Jeld-Wen, Inc. | Fiber-reinforced composite fire door |
US20070160812A1 (en) * | 2006-01-06 | 2007-07-12 | Pickens Gregory A | Products and processes for forming door skins |
US7390447B1 (en) | 2003-05-30 | 2008-06-24 | Jeld-Wen, Inc. | Molded thin-layer lignocellulosic composites made using hybrid poplar and methods of making same |
US7449229B2 (en) | 2002-11-01 | 2008-11-11 | Jeld-Wen, Inc. | System and method for making extruded, composite material |
US20090004443A1 (en) * | 2007-06-29 | 2009-01-01 | Nelson Thomas J | Chair mat |
US20090113830A1 (en) * | 2007-11-07 | 2009-05-07 | Jeld-Wen, Inc. | Composite garage doors and processes for making such doors |
US20090297818A1 (en) * | 2008-05-29 | 2009-12-03 | Jeld-Wen, Inc. | Primer compositions and methods of making the same |
US20100151229A1 (en) * | 2008-12-11 | 2010-06-17 | Jeld-Wen, Inc. | Thin-layer lignocellulose composites and methods of making the same |
US7943070B1 (en) | 2003-05-05 | 2011-05-17 | Jeld-Wen, Inc. | Molded thin-layer lignocellulose composites having reduced thickness and methods of making same |
WO2015105456A1 (en) | 2014-01-10 | 2015-07-16 | Välinge Innovation AB | A method of producing a veneered element |
USD740963S1 (en) | 2013-07-15 | 2015-10-13 | Masonite Corporation | Door facing |
US9181698B2 (en) | 2013-01-11 | 2015-11-10 | Valinge Innovation Ab | Method of producing a building panel and a building panel |
WO2015174909A1 (en) * | 2014-05-12 | 2015-11-19 | Välinge Innovation AB | A method of producing a veneered element and such a veneered element |
US9255405B2 (en) | 2008-04-07 | 2016-02-09 | Valinge Innovation Ab | Wood fibre based panels with a thin surface layer |
US9296191B2 (en) | 2010-04-13 | 2016-03-29 | Valinge Innovation Ab | Powder overlay |
US9352499B2 (en) | 2011-04-12 | 2016-05-31 | Valinge Innovation Ab | Method of manufacturing a layer |
US9403286B2 (en) | 2012-03-19 | 2016-08-02 | Valinge Innovation Ab | Method for producing a building panel |
US9410319B2 (en) | 2010-01-15 | 2016-08-09 | Valinge Innovation Ab | Heat and pressure generated design |
US9556622B2 (en) | 2007-11-19 | 2017-01-31 | Valinge Innovation Ab | Fibre based panels with a wear resistance surface |
US9573343B2 (en) | 2014-03-31 | 2017-02-21 | Ceraloc Innovation Ab | Composite boards and panels |
USD786451S1 (en) | 2013-07-15 | 2017-05-09 | Masonite Corporation | Door facing |
US10017950B2 (en) | 2011-08-26 | 2018-07-10 | Ceraloc Innovation Ab | Panel coating |
US10214913B2 (en) | 2011-04-12 | 2019-02-26 | Valinge Innovation Ab | Powder based balancing layer |
US10315219B2 (en) | 2010-05-31 | 2019-06-11 | Valinge Innovation Ab | Method of manufacturing a panel |
US10392812B2 (en) | 2012-08-09 | 2019-08-27 | Ceraloc Innovation Ab | Single layer scattering of powder surfaces |
US10442164B2 (en) | 2013-11-27 | 2019-10-15 | Valinge Innovation Ab | Floor, wall, or ceiling panel and method for producing same |
US10442152B2 (en) | 2013-11-27 | 2019-10-15 | Valinge Innovation Ab | Floorboard |
US10513094B2 (en) | 2013-10-18 | 2019-12-24 | Valinge Innovation Ab | Method of manufacturing a building panel |
US10576715B2 (en) | 2015-07-10 | 2020-03-03 | Aladdin Manufacturing Corporation | Flooring board with a thin veneer wood aesthetic and durable surface |
US10828881B2 (en) | 2016-04-25 | 2020-11-10 | Valinge Innovation Ab | Veneered element and method of producing such a veneered element |
US10899166B2 (en) | 2010-04-13 | 2021-01-26 | Valinge Innovation Ab | Digitally injected designs in powder surfaces |
US10913176B2 (en) | 2013-07-02 | 2021-02-09 | Valinge Innovation Ab | Method of manufacturing a building panel and a building panel |
US10981362B2 (en) * | 2018-01-11 | 2021-04-20 | Valinge Innovation Ab | Method to produce a veneered element |
US11046063B2 (en) | 2011-04-12 | 2021-06-29 | Valinge Innovation Ab | Powder based balancing layer |
US11066826B2 (en) | 2018-08-21 | 2021-07-20 | John David Wright | Insulatable, insulative framework apparatus and methods of making and using same |
US11072156B2 (en) | 2013-11-27 | 2021-07-27 | Valinge Innovation Ab | Method for producing a floorboard |
US11167533B2 (en) | 2018-01-11 | 2021-11-09 | Valinge Innovation Ab | Method to produce a veneered element and a veneered element |
US11235565B2 (en) * | 2008-04-07 | 2022-02-01 | Valinge Innovation Ab | Wood fibre based panels with a thin surface layer |
US11313123B2 (en) | 2015-06-16 | 2022-04-26 | Valinge Innovation Ab | Method of forming a building panel or surface element and such a building panel and surface element |
US11401718B2 (en) | 2010-01-15 | 2022-08-02 | Valinge Innovation Ab | Bright coloured surface layer |
US11597187B2 (en) | 2019-01-09 | 2023-03-07 | Valinge Innovation Ab | Method to produce a veneer element and a veneer element |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2066734A (en) * | 1934-06-22 | 1937-01-05 | Emil C Loetscher | Decorative building material and method of making the same |
US2124921A (en) * | 1935-05-03 | 1938-07-26 | N H Moos | Composite building material |
US2337792A (en) * | 1942-02-10 | 1943-12-28 | Frank A Yokell | Article of manufacture and process for making same |
US2356625A (en) * | 1938-01-18 | 1944-08-22 | Schumann Artur | Building plate |
US2419614A (en) * | 1944-08-09 | 1947-04-29 | Arthur R Welch | Coated wood product |
US2514318A (en) * | 1944-02-03 | 1950-07-04 | Elmendorf Armin | Plywood panel |
US2542025A (en) * | 1946-07-01 | 1951-02-20 | Edward S Heller | Method of pressing sheet lumber |
US2545603A (en) * | 1947-12-22 | 1951-03-20 | Chicago Mill & Lumber Co | Paper-covered wood product and method of making same |
US2642371A (en) * | 1942-04-25 | 1953-06-16 | Fahrni Fred | Composite wooden board |
US2698271A (en) * | 1949-08-13 | 1954-12-28 | Dick Co Ab | Production of thick, laminated, fibrous structures |
US2708296A (en) * | 1949-03-18 | 1955-05-17 | Mengel Company | Method of making plywood and a product thereof |
-
0
- US US2831793D patent/US2831793A/en not_active Expired - Lifetime
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2066734A (en) * | 1934-06-22 | 1937-01-05 | Emil C Loetscher | Decorative building material and method of making the same |
US2124921A (en) * | 1935-05-03 | 1938-07-26 | N H Moos | Composite building material |
US2356625A (en) * | 1938-01-18 | 1944-08-22 | Schumann Artur | Building plate |
US2337792A (en) * | 1942-02-10 | 1943-12-28 | Frank A Yokell | Article of manufacture and process for making same |
US2642371A (en) * | 1942-04-25 | 1953-06-16 | Fahrni Fred | Composite wooden board |
US2514318A (en) * | 1944-02-03 | 1950-07-04 | Elmendorf Armin | Plywood panel |
US2419614A (en) * | 1944-08-09 | 1947-04-29 | Arthur R Welch | Coated wood product |
US2542025A (en) * | 1946-07-01 | 1951-02-20 | Edward S Heller | Method of pressing sheet lumber |
US2545603A (en) * | 1947-12-22 | 1951-03-20 | Chicago Mill & Lumber Co | Paper-covered wood product and method of making same |
US2708296A (en) * | 1949-03-18 | 1955-05-17 | Mengel Company | Method of making plywood and a product thereof |
US2698271A (en) * | 1949-08-13 | 1954-12-28 | Dick Co Ab | Production of thick, laminated, fibrous structures |
Cited By (120)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3114244A (en) * | 1958-12-29 | 1963-12-17 | Joseph R Silver | Retaining wall |
US3101489A (en) * | 1959-02-17 | 1963-08-27 | Continental Copper & Steel Ind | Plastic boat construction |
US3202743A (en) * | 1961-09-06 | 1965-08-24 | Elmendorf Armin | Method of forming a composite panel |
US3287203A (en) * | 1962-03-14 | 1966-11-22 | Elmendorf Res Inc | Hardwood flooring |
US5059472A (en) * | 1985-10-29 | 1991-10-22 | Oy Partek Ab | Multi-ply wood product |
US5242888A (en) * | 1990-01-25 | 1993-09-07 | Arkwright, Incorporated | Polymeric matrix for thermal transfer recording |
US5718786A (en) * | 1990-04-03 | 1998-02-17 | Masonite Corporation | Flat oriented strand board-fiberboard composite structure and method of making the same |
US5470631A (en) * | 1990-04-03 | 1995-11-28 | Masonite Corporation | Flat oriented strand board-fiberboard composite structure and method of making the same |
US5525394A (en) * | 1990-04-03 | 1996-06-11 | Masonite Corporation | Oriented strand board-fiberboard composite structure and method of making the same |
US5425976A (en) * | 1990-04-03 | 1995-06-20 | Masonite Corporation | Oriented strand board-fiberboard composite structure and method of making the same |
US5736218A (en) * | 1993-05-31 | 1998-04-07 | Yamaha Corporation | Wood board and a flooring material made therefrom |
EP0688639A2 (en) | 1994-06-20 | 1995-12-27 | Masonite Corporation | Molded wood composites having non-blistering profile with uniform paintability and nesting |
US6103333A (en) * | 1998-05-22 | 2000-08-15 | Keith; George A. | Wood veneer laminated chair mat |
US6602610B2 (en) | 1998-09-11 | 2003-08-05 | Masonite Corporation | Molded wood composites having improved horizontal contact nesting profile |
US6200687B1 (en) | 1998-09-11 | 2001-03-13 | Masonite Corporation | Molded wood composites having improved horizontal contact nesting profile |
US6479128B1 (en) | 1999-11-24 | 2002-11-12 | Masonite Corporation | Fine textured single piece one panel molded profile |
US6461743B1 (en) | 2000-08-17 | 2002-10-08 | Louisiana-Pacific Corp. | Smooth-sided integral composite engineered panels and methods for producing same |
US7185468B2 (en) | 2002-10-31 | 2007-03-06 | Jeld-Wen, Inc. | Multi-layered fire door and method for making the same |
US7721500B2 (en) | 2002-10-31 | 2010-05-25 | Jeld-Wen, Inc. | Multi-layered fire door and method for making the same |
US20070125043A1 (en) * | 2002-10-31 | 2007-06-07 | Jeld-Wen, Inc. | Multi-layered fire door and method for making the same |
US20090001628A1 (en) * | 2002-11-01 | 2009-01-01 | Jeld-Wen, Inc. | System and method for making extruded, composite material |
US20090004315A1 (en) * | 2002-11-01 | 2009-01-01 | Jeld-Wen, Inc. | System and method for making extruded, composite material |
US7449229B2 (en) | 2002-11-01 | 2008-11-11 | Jeld-Wen, Inc. | System and method for making extruded, composite material |
US8679386B2 (en) | 2003-02-24 | 2014-03-25 | Jeld-Wen, Inc. | Thin-layer lignocellulose composites having increased resistance to moisture and methods of making the same |
US7919186B2 (en) | 2003-02-24 | 2011-04-05 | Jeld-Wen, Inc. | Thin-layer lignocellulose composites having increased resistance to moisture |
US20040229010A1 (en) * | 2003-02-24 | 2004-11-18 | Clark Randy Jon | Thin-layer lignocellulose composites having increased resistance to moisture and methods of making the same |
US20080286581A1 (en) * | 2003-02-24 | 2008-11-20 | Jeld-Wen, Inc. | Thin-layer lignocellulose composites having increased resistance to moisture and methods of making the same |
US7399438B2 (en) | 2003-02-24 | 2008-07-15 | Jeld-Wen, Inc. | Thin-layer lignocellulose composites having increased resistance to moisture and methods of making the same |
US7022414B2 (en) | 2003-04-30 | 2006-04-04 | Jeld-Wen, Inc. | Molded skin with curvature |
US20040219382A1 (en) * | 2003-04-30 | 2004-11-04 | Glenn Davina | Molded skin with curvature |
US7943070B1 (en) | 2003-05-05 | 2011-05-17 | Jeld-Wen, Inc. | Molded thin-layer lignocellulose composites having reduced thickness and methods of making same |
US7390447B1 (en) | 2003-05-30 | 2008-06-24 | Jeld-Wen, Inc. | Molded thin-layer lignocellulosic composites made using hybrid poplar and methods of making same |
US7501037B2 (en) | 2003-07-01 | 2009-03-10 | Jeld-Wen, Inc. | Methods and systems for the automated manufacture of composite doors |
US20050028921A1 (en) * | 2003-07-01 | 2005-02-10 | Stroup Jon Christopher | Methods and systems for the automated manufacture of composite doors |
US20060070325A1 (en) * | 2004-04-20 | 2006-04-06 | Tryggvi Magnusson | Hardwood flooring board |
US20080086977A1 (en) * | 2004-04-20 | 2008-04-17 | Tryggvi Magnusson | Hardwood flooring board and methods |
US20070110979A1 (en) * | 2004-04-21 | 2007-05-17 | Jeld-Wen, Inc. | Fiber-reinforced composite fire door |
US20050268571A1 (en) * | 2004-06-08 | 2005-12-08 | Tryggvi Magnusson | Hardwood flooring board |
US20060000173A1 (en) * | 2004-06-18 | 2006-01-05 | Edstrom Brian D | Composite structures having the appearance of knotty wood and methods of making such structures |
US8974910B2 (en) | 2004-09-30 | 2015-03-10 | Jeld-Wen, Inc. | Treatment of wood for the production of building structures and other wood products |
US20060093745A1 (en) * | 2004-09-30 | 2006-05-04 | Nicholson John W | Treatment of wood for the production of building structures and other wood products |
US9339943B2 (en) | 2004-09-30 | 2016-05-17 | Jeld-Wen, Inc. | Treatment of wood for the production of building structures and other wood products |
US20060272253A1 (en) * | 2004-11-24 | 2006-12-07 | Wolf Steven J | Composite garage doors and processes for making such doors |
US20070112572A1 (en) * | 2005-11-15 | 2007-05-17 | Fail Keith W | Method and apparatus for assisting vision impaired individuals with selecting items from a list |
US20070160812A1 (en) * | 2006-01-06 | 2007-07-12 | Pickens Gregory A | Products and processes for forming door skins |
US20090004443A1 (en) * | 2007-06-29 | 2009-01-01 | Nelson Thomas J | Chair mat |
US20090113830A1 (en) * | 2007-11-07 | 2009-05-07 | Jeld-Wen, Inc. | Composite garage doors and processes for making such doors |
US9556622B2 (en) | 2007-11-19 | 2017-01-31 | Valinge Innovation Ab | Fibre based panels with a wear resistance surface |
US11235565B2 (en) * | 2008-04-07 | 2022-02-01 | Valinge Innovation Ab | Wood fibre based panels with a thin surface layer |
US9255405B2 (en) | 2008-04-07 | 2016-02-09 | Valinge Innovation Ab | Wood fibre based panels with a thin surface layer |
US20090297818A1 (en) * | 2008-05-29 | 2009-12-03 | Jeld-Wen, Inc. | Primer compositions and methods of making the same |
US20100151229A1 (en) * | 2008-12-11 | 2010-06-17 | Jeld-Wen, Inc. | Thin-layer lignocellulose composites and methods of making the same |
US8058193B2 (en) | 2008-12-11 | 2011-11-15 | Jeld-Wen, Inc. | Thin-layer lignocellulose composites and methods of making the same |
US11401718B2 (en) | 2010-01-15 | 2022-08-02 | Valinge Innovation Ab | Bright coloured surface layer |
US9410319B2 (en) | 2010-01-15 | 2016-08-09 | Valinge Innovation Ab | Heat and pressure generated design |
US10899166B2 (en) | 2010-04-13 | 2021-01-26 | Valinge Innovation Ab | Digitally injected designs in powder surfaces |
US10344379B2 (en) | 2010-04-13 | 2019-07-09 | Valinge Innovation Ab | Powder overlay |
US9296191B2 (en) | 2010-04-13 | 2016-03-29 | Valinge Innovation Ab | Powder overlay |
US11040371B2 (en) | 2010-05-31 | 2021-06-22 | Valinge Innovation Ab | Production method |
US10315219B2 (en) | 2010-05-31 | 2019-06-11 | Valinge Innovation Ab | Method of manufacturing a panel |
US9352499B2 (en) | 2011-04-12 | 2016-05-31 | Valinge Innovation Ab | Method of manufacturing a layer |
US11633884B2 (en) | 2011-04-12 | 2023-04-25 | Valinge Innovation Ab | Method of manufacturing a layer |
US10214913B2 (en) | 2011-04-12 | 2019-02-26 | Valinge Innovation Ab | Powder based balancing layer |
US11046063B2 (en) | 2011-04-12 | 2021-06-29 | Valinge Innovation Ab | Powder based balancing layer |
US11566431B2 (en) | 2011-08-26 | 2023-01-31 | Ceraloc Innovation Ab | Panel coating |
US10017950B2 (en) | 2011-08-26 | 2018-07-10 | Ceraloc Innovation Ab | Panel coating |
US9403286B2 (en) | 2012-03-19 | 2016-08-02 | Valinge Innovation Ab | Method for producing a building panel |
US11905717B2 (en) | 2012-08-09 | 2024-02-20 | Ceraloc Innovation Ab | Single layer scattering of powder surfaces |
US10392812B2 (en) | 2012-08-09 | 2019-08-27 | Ceraloc Innovation Ab | Single layer scattering of powder surfaces |
US10493729B2 (en) | 2013-01-11 | 2019-12-03 | Valinge Innovation Ab | Method of producing a building panel and a building panel |
US11135814B2 (en) | 2013-01-11 | 2021-10-05 | Valinge Innovation Ab | Method of producing a building panel and a building panel |
US9181698B2 (en) | 2013-01-11 | 2015-11-10 | Valinge Innovation Ab | Method of producing a building panel and a building panel |
US10913176B2 (en) | 2013-07-02 | 2021-02-09 | Valinge Innovation Ab | Method of manufacturing a building panel and a building panel |
USD844846S1 (en) | 2013-07-15 | 2019-04-02 | Masoite Corporation | Door facing |
USD740963S1 (en) | 2013-07-15 | 2015-10-13 | Masonite Corporation | Door facing |
USD790729S1 (en) | 2013-07-15 | 2017-06-27 | Masonite Corporation | Door facing |
USD786451S1 (en) | 2013-07-15 | 2017-05-09 | Masonite Corporation | Door facing |
US10513094B2 (en) | 2013-10-18 | 2019-12-24 | Valinge Innovation Ab | Method of manufacturing a building panel |
US11485126B2 (en) | 2013-11-27 | 2022-11-01 | Valinge Innovation Ab | Method for producing a floorboard |
US11072156B2 (en) | 2013-11-27 | 2021-07-27 | Valinge Innovation Ab | Method for producing a floorboard |
US10442164B2 (en) | 2013-11-27 | 2019-10-15 | Valinge Innovation Ab | Floor, wall, or ceiling panel and method for producing same |
US10442152B2 (en) | 2013-11-27 | 2019-10-15 | Valinge Innovation Ab | Floorboard |
US10926509B2 (en) | 2013-11-27 | 2021-02-23 | Valinge Innovation Ab | Floorboard |
US10857765B2 (en) | 2013-11-27 | 2020-12-08 | Valinge Innovation Ab | Floor, wall, or ceiling panel and method for producing same |
CN105873762A (en) * | 2014-01-10 | 2016-08-17 | 瓦林格创新股份有限公司 | A method of producing a veneered element |
EP4230372A2 (en) | 2014-01-10 | 2023-08-23 | Välinge Innovation AB | Wood fibre based panel with a surface layer |
EA035052B1 (en) * | 2014-01-10 | 2020-04-22 | Велинге Инновейшн Аб | Wood fibre based panel with a surface layer |
CN110861373A (en) * | 2014-01-10 | 2020-03-06 | 瓦林格创新股份有限公司 | Wood fiber based panel with surface layer |
WO2015105456A1 (en) | 2014-01-10 | 2015-07-16 | Välinge Innovation AB | A method of producing a veneered element |
US11890847B2 (en) | 2014-01-10 | 2024-02-06 | Välinge Innovation AB | Method of producing a veneered element |
EP4230372A3 (en) * | 2014-01-10 | 2023-10-18 | Välinge Innovation AB | Wood fibre based panel with a surface layer |
US10988941B2 (en) * | 2014-01-10 | 2021-04-27 | Valinge Innovation Ab | Method of producing a veneered element |
EA033693B1 (en) * | 2014-01-10 | 2019-11-18 | Vaelinge Innovation Ab | Method of producing a veneered element |
US11318726B2 (en) * | 2014-01-10 | 2022-05-03 | Valinge Innovation Ab | Wood fibre based panel with a surface layer |
WO2015105455A1 (en) * | 2014-01-10 | 2015-07-16 | Välinge Innovation AB | Wood fibre based panel with a surface layer |
US20190010711A1 (en) * | 2014-01-10 | 2019-01-10 | Välinge Innovation AB | Wood fibre based panel with a surface layer |
US10100535B2 (en) | 2014-01-10 | 2018-10-16 | Valinge Innovation Ab | Wood fibre based panel with a surface layer |
CN105873761A (en) * | 2014-01-10 | 2016-08-17 | 瓦林格创新股份有限公司 | Wood fibre based panel with a surface layer |
EP3092124B1 (en) * | 2014-01-10 | 2021-12-15 | Välinge Innovation AB | A method of producing a veneered element |
US20220324217A1 (en) * | 2014-01-10 | 2022-10-13 | Välinge Innovation AB | Wood fibre based panel with a surface layer |
JP2017503688A (en) * | 2014-01-10 | 2017-02-02 | ベーリンゲ、イノベイション、アクチボラグVaelinge Innovation Ab | Veneer element manufacturing method |
EP3984740A1 (en) * | 2014-01-10 | 2022-04-20 | Välinge Innovation AB | A method of producing a veneered element and veneered element |
US11370209B2 (en) * | 2014-01-10 | 2022-06-28 | Valinge Innovation Ab | Method of producing a veneered element |
US10307984B2 (en) | 2014-03-31 | 2019-06-04 | Ceraloc Innovation Ab | Composite boards and panels |
US9573343B2 (en) | 2014-03-31 | 2017-02-21 | Ceraloc Innovation Ab | Composite boards and panels |
US10967608B2 (en) | 2014-03-31 | 2021-04-06 | Ceraloc Innovation Ab | Composite boards and panels |
US11541630B2 (en) | 2014-03-31 | 2023-01-03 | Ceraloc Innovation Ab | Composite boards and panels |
WO2015174909A1 (en) * | 2014-05-12 | 2015-11-19 | Välinge Innovation AB | A method of producing a veneered element and such a veneered element |
US11313123B2 (en) | 2015-06-16 | 2022-04-26 | Valinge Innovation Ab | Method of forming a building panel or surface element and such a building panel and surface element |
US10576715B2 (en) | 2015-07-10 | 2020-03-03 | Aladdin Manufacturing Corporation | Flooring board with a thin veneer wood aesthetic and durable surface |
US10828881B2 (en) | 2016-04-25 | 2020-11-10 | Valinge Innovation Ab | Veneered element and method of producing such a veneered element |
US11904588B2 (en) | 2016-04-25 | 2024-02-20 | Välinge Innovation AB | Veneered element and method of producing such a veneered element |
US11738540B2 (en) | 2018-01-11 | 2023-08-29 | Välinge Innovation AB | Method to produce a veneered element and a veneered element |
US10981362B2 (en) * | 2018-01-11 | 2021-04-20 | Valinge Innovation Ab | Method to produce a veneered element |
US11850829B2 (en) * | 2018-01-11 | 2023-12-26 | Välinge Innovation AB | Method to produce a veneered element and a veneered element |
US11167533B2 (en) | 2018-01-11 | 2021-11-09 | Valinge Innovation Ab | Method to produce a veneered element and a veneered element |
US20220024189A1 (en) * | 2018-01-11 | 2022-01-27 | Välinge Innovation AB | Method to produce a veneered element and a veneered element |
US11066826B2 (en) | 2018-08-21 | 2021-07-20 | John David Wright | Insulatable, insulative framework apparatus and methods of making and using same |
US11808031B2 (en) | 2018-08-21 | 2023-11-07 | J. David Wright LLC | Insulatable, insulative framework apparatus and methods of making and using same |
US11597187B2 (en) | 2019-01-09 | 2023-03-07 | Valinge Innovation Ab | Method to produce a veneer element and a veneer element |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2831793A (en) | Composite veneer or plywood panel | |
US2565251A (en) | Plywood panel | |
US2642371A (en) | Composite wooden board | |
EP2574455B1 (en) | Light multiple layer wood panel | |
US2419614A (en) | Coated wood product | |
US2831794A (en) | Process for manufacturing veneer panels | |
US4743484A (en) | Laminated veneer lumber (LVL) | |
US3447996A (en) | Stratified wood composition panel | |
US5234747A (en) | High strength laminated veneer lumber | |
US5134026A (en) | Process for manufacturing a compression-moulded synthetic resin object and fabricated material for use in said process | |
US6737155B1 (en) | Paper overlaid wood board and method of making the same | |
US4844763A (en) | Laminated veneer lumber (LVL) | |
US2817617A (en) | Process of manufacturing board-like articles | |
CN101550759A (en) | Parquet using laminated veneer lumber strip as base material and production method thereof | |
US3003205A (en) | Composite bevel siding and method for its fabrication | |
US3816236A (en) | Cross-banding material for wood veneers | |
US4405542A (en) | Method for the production of a composite material | |
US3616128A (en) | Dimensionally stable hardwood panel and a method of forming the same | |
US2821497A (en) | Edge-surfaced woody product | |
CN104149143A (en) | Solid laminated wood of novel structure | |
Nazerian et al. | Production of blockboard from small athel slats end-glued by different type of joint | |
US3843431A (en) | Process for making fibrous composition board | |
US2653890A (en) | Method of processing wood | |
KR20080076180A (en) | Structure of composite core for wood flooring | |
US3715257A (en) | Method for producing a flat particle-faced plywood panel |