WO1992019429A1 - Method of quality improvement of wooden articles, such as improved preservation of the wood through impregnation thereof - Google Patents
Method of quality improvement of wooden articles, such as improved preservation of the wood through impregnation thereof Download PDFInfo
- Publication number
- WO1992019429A1 WO1992019429A1 PCT/DK1992/000148 DK9200148W WO9219429A1 WO 1992019429 A1 WO1992019429 A1 WO 1992019429A1 DK 9200148 W DK9200148 W DK 9200148W WO 9219429 A1 WO9219429 A1 WO 9219429A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wood
- oil
- bath
- wooden articles
- linseed oil
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/34—Organic impregnating agents
- B27K3/44—Tar; Mineral oil
- B27K3/48—Mineral oil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/0278—Processes; Apparatus involving an additional treatment during or after impregnation
- B27K3/0285—Processes; Apparatus involving an additional treatment during or after impregnation for improving the penetration of the impregnating fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/0085—Thermal treatments, i.e. involving chemical modification of wood at temperatures well over 100°C
Definitions
- the invention relates to a method of quality improvement of wooden articles such as improved preservation of wood through impregnation thereof, and where the impregnation is carried out by the wooden articles being immersed in a bath of hot linseed oil or similar vegetable oil, heated to at least 110°C, whereby the water present in the wood evaporates and diffuses through the wood and the oil while the hot oil simultaneously penetrates into the pores and cavities of the wood, whereupon the wooden articles are taken out of the bath and the oil oozed in is made to cure and thereby to stiffen the wood.
- French patent No. 397,789 disloses a method for drying wood and improving the quality of the wood by immersing said wood into hot linseed oil or similar oils.
- the temperature of the oil must be sufficiently high for the water in the wood to evaporate and the wood to be impregnated with the oil. It is stated that the temperature is conventionally 100—110°C. This method is not quite satisfactory because the wooden articles tend to be distorted at this relatively low impregnation temperature, as is also the case when drying in hot air.
- the method according to the invention is characterised in that during the immersion of the wooden articles, the linseed oil bath has a temperature of up to 250°C, prefer- ably near 250°C, and that an insecticide and/or fungicide has been added to the linseed oil.
- the linseed oil bath has a temperature of up to 250°C, prefer- ably near 250°C, and that an insecticide and/or fungicide has been added to the linseed oil.
- the treated wooden articles stand mechanical treatment at higher rates of speed than so far known, as the impregnation oil has a considerable lubricating effect. Furthermore, the surface of the wooden articles better stand painting at a later time. Finally, the method is environmentally more acceptable than the known pressure impregnation where salts are used which may be toxinous .
- An embodiment of the method according to the invention is characterised in that a drier (siccative) is added to the linseed oil used thereby accelerating the curing of the oil.
- a second embodiment of the invention according to the invention is characterised in that colour pigments have been added to the linseed oil used. As a result, the finished wooden articles get a more attractive appearance, as the colour pigments particularly settle on the surface of the wooden articles . The penetration depends on the type of wood, dimension and original place in the stem.
- a further embodiment of the method according to the invention is characterised in that the treated articles are of old (previsously used) wood. As a result, old apparently worn out wood may find new use, for instance in connection with a restoration, as the wood gets back its old strength, indeed may get stonger than it naturally was .
- the immersion may be carried out for a relatively short period whereby the penetration of the linseed oil in the wooden material takes place to a rather slight depth. Thereby wooden articles of a rather different quality may be obtained.
- the wooden articles may be subjected to a controlled drying (curing process) in heat chamber or autoclave after the impregnation with the hot linseed oil. It is thereby further ensured that the end product is not crooked.
- the linseed bath may have a temperature of 145-250°C, preferably 175-245°C, during the immersion of the wooden articles, which has been found particularly advantageous .
- the linseed bath may have a temperature of 210-240 ⁇ C, preferably 225-235 ⁇ C during the immersion of the wooden articles, which is also very advantageous .
- the wooden articles may be kept immersed for at least 10 minutes, preferably 15-45 minutes, whereby a suitable oozing in of oil is obtained.
- the present method is environmentally acceptable because the substances used are degradable and possible residues may be used for other purposes, for instance paint.
- the invention is described in greater details below with reference to the Examples.
- a number of new window frames (500 by 1000 mm) made of pinewood, which were desired to be improved as regards the wood quality were freed of glass and possible hardware.
- the frames were then immersed into a large heated vessel containing linseed oil varnish, i.e. pure linseed oil with drier (siccative) added and an insecticide and fungicide.
- the linseed oil had a temperature of 250 ⁇ C or slightly below.
- the frames were kept immersed for 10—20 minutes. They were then taken out of the bath and brought to a drying chamber where the air temperature was about 50°C and the air change was uniformly slow.
- the drier (sic— cative) added to the linseed oil comprised 0.07% lead , 0.003% manganese and 0.004% calcium.
- the finished frames displayed a marked improvement of the strength of the wood and the joints between the frame sections of which the individual frame is constructed, proved to be very compact.
- the frames displayed no tendency to warp (crookedness) and were entirely without fungus spores. Furthermore, the frames did not provide intimate soil to the fungus spores.
- a number of wooden articles of pinewood were formed to have dimensions almost corresponding to the dimentions of the worked end products.
- the degree of humidity of the starting articles was around 20%.
- the articles were immersed in a bath of 150°C hot linseed oil and were kept under the surface of the oil for 45 minutes. At the end of this period only signs of the oil sizzling around the articles were seen. The water evaporation had ceased before then.
- the invention may be varied in many ways without thereby deviating from the scope of its idea.
- the time spent by the articles in the linseed bath may thus be extended to several hours. Possibly, the drying time may be extended to more days .
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69201239T DE69201239T2 (en) | 1991-05-07 | 1992-05-07 | METHOD FOR IMPROVING THE QUALITY OF WOODEN ITEMS, SUCH AS CONSERVATION OF THE WOOD BY IMPREGNATION. |
EP92910440A EP0576608B1 (en) | 1991-05-07 | 1992-05-07 | Method of quality improvement of wooden articles, such as improved preservation of the wood through impregnation thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK0848/91 | 1991-05-07 | ||
DK084891A DK172239B1 (en) | 1991-05-07 | 1991-05-07 | Process for quality improvement, such as improved preservation, of wood blanks by impregnating them |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992019429A1 true WO1992019429A1 (en) | 1992-11-12 |
Family
ID=8098232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DK1992/000148 WO1992019429A1 (en) | 1991-05-07 | 1992-05-07 | Method of quality improvement of wooden articles, such as improved preservation of the wood through impregnation thereof |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0576608B1 (en) |
AT (1) | ATE117238T1 (en) |
AU (1) | AU1789092A (en) |
DE (1) | DE69201239T2 (en) |
DK (1) | DK172239B1 (en) |
WO (1) | WO1992019429A1 (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994006638A1 (en) * | 1992-09-15 | 1994-03-31 | Ulrich Herbert Schirnig | A method of cleansing woodwork |
WO1996035560A1 (en) * | 1995-05-08 | 1996-11-14 | The University Of Melbourne | Process of treating wood with preservative |
WO1998046403A1 (en) * | 1997-04-16 | 1998-10-22 | Bwg Butzbacher Weichenbau Gesellschaft Mbh & Co. Kg | Process for impregnating solid bodies |
EP1002630A1 (en) * | 1998-11-17 | 2000-05-24 | Menz, Martin | Wood treatment process |
WO2001024982A1 (en) * | 1999-10-07 | 2001-04-12 | Järlåsa Färgindustrier AB | Method of impregnation |
WO2002047876A1 (en) * | 2000-12-15 | 2002-06-20 | Koppers-Hickson Timber Protection Pty Limited | Material and method for treatment of timber |
US6686056B2 (en) | 2001-12-04 | 2004-02-03 | Chemical Specialties, Inc. | Reactive oil/copper preservative systems for wood products |
EP1568745A1 (en) * | 2004-02-27 | 2005-08-31 | Calignum Technologies AB | Composition comprising an initiator and a method of treating wood with the composition |
WO2008083462A1 (en) * | 2007-01-03 | 2008-07-17 | Universite Du Quebec En Abitibi-Temiscamingue (Uqat) | Process and apparatus for the heat treatment of a wood product and treated wood product |
US8871277B2 (en) | 2003-06-17 | 2014-10-28 | Osmose, Inc. | Particulate wood preservative and method for producing the same |
US9079328B2 (en) | 2003-04-09 | 2015-07-14 | Koppers Performance Chemicals Inc. | Micronized wood preservative formulations |
US9314030B2 (en) | 2004-05-17 | 2016-04-19 | Koppers Performance Chemicals Inc. | Particulate wood preservative and method for producing same |
US9775350B2 (en) | 2004-10-14 | 2017-10-03 | Koppers Performance Chemicals Inc. | Micronized wood preservative formulations in organic carriers |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK92243C (en) * | 1957-07-20 | 1961-11-20 | Herman Wang | Apparatus for making bags provided with one or more closure strips. |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR397786A (en) * | 1908-03-06 | 1909-05-17 | Cyprien Gillet Aine | Treatment process to dry and increase the qualities of wood |
SE465790B (en) * | 1990-03-05 | 1991-10-28 | Electrolux Ab | VARIABLE VEHICLE FOR SMALL HIGH-SPEED ENGINES |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE465760B (en) * | 1985-05-28 | 1991-10-28 | Kemira Kemwood Ab | Procedure for impregnating and colouring wood with wood preservatives and pigments in one step |
-
1991
- 1991-05-07 DK DK084891A patent/DK172239B1/en not_active IP Right Cessation
-
1992
- 1992-05-07 EP EP92910440A patent/EP0576608B1/en not_active Expired - Lifetime
- 1992-05-07 DE DE69201239T patent/DE69201239T2/en not_active Expired - Fee Related
- 1992-05-07 AU AU17890/92A patent/AU1789092A/en not_active Abandoned
- 1992-05-07 WO PCT/DK1992/000148 patent/WO1992019429A1/en active IP Right Grant
- 1992-05-07 AT AT92910440T patent/ATE117238T1/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR397786A (en) * | 1908-03-06 | 1909-05-17 | Cyprien Gillet Aine | Treatment process to dry and increase the qualities of wood |
SE465790B (en) * | 1990-03-05 | 1991-10-28 | Electrolux Ab | VARIABLE VEHICLE FOR SMALL HIGH-SPEED ENGINES |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994006638A1 (en) * | 1992-09-15 | 1994-03-31 | Ulrich Herbert Schirnig | A method of cleansing woodwork |
US6235403B1 (en) | 1995-05-08 | 2001-05-22 | The University Of Melbourne | Process of treating wood with preservative |
WO1996035560A1 (en) * | 1995-05-08 | 1996-11-14 | The University Of Melbourne | Process of treating wood with preservative |
WO1998046403A1 (en) * | 1997-04-16 | 1998-10-22 | Bwg Butzbacher Weichenbau Gesellschaft Mbh & Co. Kg | Process for impregnating solid bodies |
AT408084B (en) * | 1997-04-16 | 2001-08-27 | Butzbacher Weichenbau Gmbh | METHOD FOR IMPREGNATING WOODEN TRACKS OR WOODEN TRACKS |
EP1002630A1 (en) * | 1998-11-17 | 2000-05-24 | Menz, Martin | Wood treatment process |
US6217939B1 (en) | 1998-11-17 | 2001-04-17 | Martin Menz | Wood treatment process |
WO2001024982A1 (en) * | 1999-10-07 | 2001-04-12 | Järlåsa Färgindustrier AB | Method of impregnation |
WO2002047876A1 (en) * | 2000-12-15 | 2002-06-20 | Koppers-Hickson Timber Protection Pty Limited | Material and method for treatment of timber |
US7361215B2 (en) | 2000-12-15 | 2008-04-22 | Koppers Arch Wood Protection (Aust) Pty Limited | Material and method for treatment of timber |
US7625577B2 (en) | 2000-12-15 | 2009-12-01 | Koppers-Hickson Timber Protection Pty Limited | Material and method for treatment of timber |
US6686056B2 (en) | 2001-12-04 | 2004-02-03 | Chemical Specialties, Inc. | Reactive oil/copper preservative systems for wood products |
US9079328B2 (en) | 2003-04-09 | 2015-07-14 | Koppers Performance Chemicals Inc. | Micronized wood preservative formulations |
US8871277B2 (en) | 2003-06-17 | 2014-10-28 | Osmose, Inc. | Particulate wood preservative and method for producing the same |
EP1568745A1 (en) * | 2004-02-27 | 2005-08-31 | Calignum Technologies AB | Composition comprising an initiator and a method of treating wood with the composition |
US9314030B2 (en) | 2004-05-17 | 2016-04-19 | Koppers Performance Chemicals Inc. | Particulate wood preservative and method for producing same |
US9775350B2 (en) | 2004-10-14 | 2017-10-03 | Koppers Performance Chemicals Inc. | Micronized wood preservative formulations in organic carriers |
US8475880B2 (en) | 2007-01-03 | 2013-07-02 | Serex | Process and apparatus for the heat treatment of a wood product and treated wood product |
US20100143737A1 (en) * | 2007-01-03 | 2010-06-10 | Abdelkader Chaala | Process and apparatus for the heat treatment of a wood product and treated wood product |
WO2008083462A1 (en) * | 2007-01-03 | 2008-07-17 | Universite Du Quebec En Abitibi-Temiscamingue (Uqat) | Process and apparatus for the heat treatment of a wood product and treated wood product |
Also Published As
Publication number | Publication date |
---|---|
DK172239B1 (en) | 1998-02-02 |
ATE117238T1 (en) | 1995-02-15 |
DK84891A (en) | 1992-11-08 |
DK84891D0 (en) | 1991-05-07 |
EP0576608A1 (en) | 1994-01-05 |
DE69201239D1 (en) | 1995-03-02 |
DE69201239T2 (en) | 1995-05-18 |
AU1789092A (en) | 1992-12-21 |
EP0576608B1 (en) | 1995-01-18 |
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