DE3631325A1 - Method for sheathing profile sections made of wood particle materials - Google Patents

Method for sheathing profile sections made of wood particle materials

Info

Publication number
DE3631325A1
DE3631325A1 DE19863631325 DE3631325A DE3631325A1 DE 3631325 A1 DE3631325 A1 DE 3631325A1 DE 19863631325 DE19863631325 DE 19863631325 DE 3631325 A DE3631325 A DE 3631325A DE 3631325 A1 DE3631325 A1 DE 3631325A1
Authority
DE
Germany
Prior art keywords
smoothing
sheathing
profile sections
profiles
profile
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.)
Withdrawn
Application number
DE19863631325
Other languages
German (de)
Inventor
Konrad Scholz
Roland Bretschneider
Peter Dipl Ing Dr Boehme
Siegmar Dammer
Hans Dipl Ing Hille
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WTZ HOLZVERARBEITENDE IND
Original Assignee
WTZ HOLZVERARBEITENDE IND
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WTZ HOLZVERARBEITENDE IND filed Critical WTZ HOLZVERARBEITENDE IND
Publication of DE3631325A1 publication Critical patent/DE3631325A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/48—Preparation of the surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N7/00—After-treatment, e.g. reducing swelling or shrinkage, surfacing; Protecting the edges of boards against access of humidity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/0065—Heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/02—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material
    • B29C63/04—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material by folding, winding, bending or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/14—Wood, e.g. woodboard or fibreboard

Abstract

The invention relates to a method for smoothing out shaped profile sections, especially those made of medium-density fibreboards, so that the said profile sections can be sheathed with films. The aim is to make it unnecessary to abrade the profile section blanks while ensuring that the quality of sheathing is improved. To achieve this, a specially adapted smoothing process has been incorporated into the sequence of industrial operations which are required for sheathing the profile sections. According to the invention, a multi-stage smoothing process is proposed, the profile sections being presmoothed by means of smoothing shoes in an initial operation before sheathing, which shoes have a corrugated, rasp-like or file-like surface, or are composed of a plurality of doctor blades, the profiles then being subject to intermediate smoothing by means of heated smooth profiled rolls or rollers. Sheathing or final smoothing is carried out immediately after this process. The invention can be used for the manufacture of profile sections for the construction of furniture.

Description

Anwendungsgebiet der ErfindungField of application of the invention

Die Erfindung betrifft ein Verfahren zum Glätten von gesägten oder gefrästen Profilen aus Holzpartikelwerkstoffen, insbeson­ dere von Faserplatten mittlerer Dichte, im Zusammenhang mit ihrer Ummantelung mit Papierträgerfolien oder PVC-Folien auf einer Profilummantelungsanlage.The invention relates to a method for smoothing sawn or milled profiles made of wood particle materials, in particular of medium density fiberboard, related to their wrapping with paper backing foils or PVC foils a profile wrapping system.

Charakteristik der bekannten technischen LösungenCharacteristic of the known technical solutions

Zur Erzielung einer ausreichenden Ummantelungsqualität müssen gesägte oder gefräste Rohrprofile aus Holzpartikelwerkstoffen vor dem Ummanteln mit Folien geschliffen werden. Dies geschieht auf selbständigen, meist technisch aufwendigen Schleifanlagen mittels Profilschleifklötzen, Profilschleifbändern oder Profil­ schleifscheiben, wobei die Durchlaufgeschwindigkeit an der Schleifanlage etwa nur die Hälfte der Fräsgeschwindigkeit be­ trägt und überdies die Schleifkörper häufig gewechselt werden müssen, was insgesamt zu einem technologisch ungünstigen Pro­ duktionsablauf führt. Daneben wirkt der entstehende Schleif­ staub lästig und führt zu einem beschleunigten Verschleiß ro­ tierender Anlagenteile.In order to achieve adequate sheathing quality Sawed or milled pipe profiles made of wood particle materials be sanded with foils before coating. this happens on independent, usually technically complex grinding systems using profile grinding blocks, profile grinding belts or a profile grinding wheels, the throughput speed at the Grinding system only be about half the milling speed carries and moreover the grinding wheels are changed frequently need, which overall is a technologically unfavorable pro production process leads. The resulting grinding also acts dust annoying and leads to accelerated wear ro plant parts.

Andererseits ist das sogenannte Thermoglätten von Holzoberflä­ chen mittels ebener beheizter Platten oder beheizter, glatter, rotierender Walzen bekannt (z. B. aus DE-AS 12 60 759). Ein der­ artiges Thermoglätten wird auch bei mit Furnier beschichteten Platten angewendet, wobei es hier gelingt, die Furnieroberfläche nach der Behandlung mit wäßrigen Beizflüssigkeiten so weit zu glätten, daß das an dieser Stelle sonst übliche Nachschleifen überflüssig wird (G. Nawrat, Przem. Drzewny, Warszawa 30 (1979) 2, S. 9-10. - I. Nikolowa-Burzynska, Prace Inst. Technol. Drewna, Poznan 30 (1983) 1/2, S. 79-103).On the other hand is the so-called thermal smoothing of wooden surfaces chen by means of flat heated plates or heated, smooth, rotating rollers known (z. B. from DE-AS 12 60 759). One of the Like thermo smoothing is also coated with veneer Panels applied, where it succeeds, the veneer surface  so far after treatment with aqueous pickling liquids smooth that the usual regrinding at this point becomes superfluous (G. Nawrat, Przem. Drzewny, Warszawa 30 (1979) 2, pp. 9-10. - I. Nikolowa-Burzynska, Prace Inst. Technol. Drewna, Poznan 30 (1983) 1/2, pp. 79-103).

Mittels der bisher bekannten Glättverfahren ist es bisher nicht möglich gewesen, auf das Schleifen der Oberfläche angefräster Holzpartikelwerkstoffkanten zu verzichten. Selbst Profile aus relativ homogen aufgebauten mitteldichten Faserplatten weisen nach dem Fräsen eine Rauhigkeit (Rauhtiefe) von 60 bis 300 µ auf. Diese Unebenheiten markieren sich bei Ummanteln mit Folien deutlich auf der Oberfläche und sind nur durch Schleifen zu be­ seitigen. So far, it has not been possible by means of the smoothing processes known to date have been possible to mill on the surface To dispense with wood particle material edges. Even profiles from have relatively homogeneous medium density fiberboard after milling, a roughness (roughness depth) of 60 to 300 µ on. These bumps are marked when wrapping with foils clearly on the surface and can only be used by grinding sided.

Ein weiterer Nachteil der bekannten Lösungen bei der Ummante­ lung mit Folien ist der relativ geringe Druck auf die Folie während des Ummantelungsvorganges, der dazu führt, daß die Klebfuge zwischen der Folie und der Trägerplatte nicht optimal ausgebildet ist und besonders bei der mechanischen Bearbeitung zu Ausrissen führt.Another disadvantage of the known solutions in the Ummante development with foils is the relatively low pressure on the foil during the wrapping process, which leads to the Adhesive joint between the film and the carrier plate is not optimal is trained and especially in mechanical processing leads to ripping out.

Ziel der ErfindungAim of the invention

Das Ziel der Erfindung besteht darin, unter Wegfall des Schlei­ fens einen Glättprozeß für Holzpartikelwerkstoffprofile vorzu­ schlagen, der unmittelbar nach dem Sägen oder Fräsen zu einer solchen Oberflächenqualität führt, daß die Ummantelung mit Folien in einwandfreier Qualität möglich wird.The aim of the invention is to eliminate the loop fens a smoothing process for wood particle material profiles beat the one immediately after sawing or milling such surface quality leads that the casing with Perfect quality foils.

Darlegung des Wesens der ErfindungState the nature of the invention

Der Erfindung liegt die Aufgabe zugrunde, in den technologischen Ablauf der Profilummantelung einen den Bedingungen der Holzpar­ tikelwerkstoffbearbeitung in besonderer Weise angepaßten Glätt­ prozeß einzubauen, der im Ergebnis zu qualitativ hochwertigen Profiloberflächen führt.The invention has for its object in the technological Sequence of profile wrapping according to the conditions of the Holzpar particle material processing in a specially adapted smoothing to incorporate process that results in high quality Profile surfaces leads.

Erfindungsgemäß werden gesägte oder gefräste Profile aus Holzpar­ tikelwerkstoffen einem mehrstufigen Glättungsprozeß unterworfen: According to the invention, sawn or milled profiles are made from wood par particle materials subjected to a multi-stage smoothing process:  

Vor dem Ummanteln werden die Profile in einem ersten Arbeits­ gang mittels Glättschuhen, die eine Oberfläche von geriffelter, raspel- oder feilenartiger Struktur aufweisen oder die aus mehreren Rakelblättchen bestehen, bei normaler Temperatur vor­ geglättet. Hierbei werden die Partikeln, die beim Fräsen an- bzw. abgeschnitten werden und lose an der Oberfläche liegen, beseitigt.Before sheathing the profiles in a first work walking with smooth shoes that have a surface of corrugated, have rasp-like or file-like structure or that several doctor blades exist at normal temperature smoothed. Here, the particles that are present during milling or cut off and lie loosely on the surface, eliminated.

An diesen Arbeitsgang schließt sich als zweiter Schritt eine Zwischenglättung an. Dieses unmittelbar vor dem Ummanteln er­ folgende Glätten wird mittels beheizter, glatter Profilrollen oder -walzen bei Temperaturen zwischen 40 und 250°C unter einem Druck von 50 bis 300 /Ncm2 durchgeführt. Hierbei erfolgt eine Verdichtung bei gleichzeitiger Vorwärmung der aus den Holzpar­ tikeln gebildeten Werkstoffoberfläche.This step is followed by intermediate smoothing as a second step. This smoothing, which follows immediately before the sheathing, is carried out by means of heated, smooth profile rollers or rollers at temperatures between 40 and 250 ° C. under a pressure of 50 to 300 / Ncm 2 . Here, compression takes place with simultaneous preheating of the material surface formed from the wood particles.

Nach dem Ummanteln werden die Profile schließlich in einem dritten Glättvorgang in bekannter Weise mittels beheizter Prof­ filrollen oder -walzen oder Glättschuhen nachgeglättet. Hier­ bei wird insbesondere der Dispersionsklebstoff aktiviert und die Haftung zwischen Trägerplatte und Folie verbessert. Der technologische Ablauf ist zweckmäßig unmittelbar in die Ummantelungsanlage eingeordnet und erfolgt im Durchlaufverfahren entsprechend der Ummantelungsgeschwindigkeit. Das Verfahren ist in erster Linie für Profile aus mitteldichten Faserplatten ge­ eignet, aber auch für Spanplatten mit weitgehend homogenem Auf­ bau.After encasing, the profiles are finally in one third smoothing process in a known manner by means of heated Prof Fil rolls or rollers or smooth shoes smoothed. Here in particular, the dispersion adhesive is activated and the adhesion between the carrier plate and the film is improved. The technological process is expedient directly in the Sheathing system classified and done in a continuous process according to the coating speed. The procedure is primarily for profiles made of medium density fibreboard suitable, but also for chipboard with a largely homogeneous opening construction.

Das in der erfindungsgemäßen Form durchgeführte Glätten ge­ stattet einen völligen Verzicht auf jegliches Schleifen und führt dadurch zu einer erheblichen Reduzierung des maschinen­ technischen und Energieaufwandes bei gleichzeitiger Erhöhung der Durchlaufkapazität und verbesserter Ummantelungsqualität.The smoothing performed in the form according to the invention provides a complete waiver of any grinding and this leads to a considerable reduction in the machine technical and energy expenditure with simultaneous increase throughput capacity and improved casing quality.

AusführungsbeispielEmbodiment

Aus einer MdF-Platte hergestellte, gefräste, ungeschliffene Roh­ profile werden mit UP-Folie unter Einsatz von Dispersionskleb­ stoff auf einer Ummantelungsanlage bekannter Bauart wie folgt ummantelt:Made from a MdF board, milled, uncut raw profiles are made with UP film using dispersion adhesive fabric on a coating system of known design as follows encased:

Durch das Einzugsmagazin wird das Rohprofil in die Transport­ einrichtung der Ummantelungsanlage eingeführt. Dabei wird mittels einem federgelagerten Gleitschuh mit feilenartiger Oberfläche die Profiloberfläche vorgeglättet und die beim Fräsen ange­ schnittenen Partikeln von der Oberfläche abgefeilt. Unmittel­ bar danach durchläuft das Rohprofil ein mittels Luftduschen auf 180°C beheiztes Glättwerk mit der Profilform angepaßten Glättrollen. Dieses Zwischenglätten kann in verschiedenen Ebenen erfolgen und wird unmittelbar vor dem Ummanteln abge­ schlossen. Das vorgewärmte und geglättete Rohprofil wird an­ schließend mit einer mit PVAC-Dispersionsklebstoff (Wilbra FT) versehenen UP-Folie ummantelt. Unmittelbar nach Abschluß des Ummantelungsvorganges durchläuft das ummantelte Profil ein Nachglättwerk, wobei das Profil ebenfalls mit Luftduschen auf 70°C erwärmt wird.The raw profile is transported into the transport by the feed magazine installation of the coating system introduced. Thereby is  a spring-loaded shoe with a file-like surface the profile surface is pre-smoothed and the surface is cut during milling cut particles filed from the surface. Immediately bar afterwards the raw profile runs through using air showers smoothing unit heated to 180 ° C with the profile shape Smoothing rolls. This intermediate smoothing can be done in different ways Levels occur and is removed immediately before the sheathing closed. The preheated and smoothed raw profile turns on closing with a with PVAC dispersion adhesive (Wilbra FT) coated UP film. Immediately after completion of the Sheathing process runs through the sheathed profile Nachglättwerk, the profile also with air showers 70 ° C is heated.

Claims (1)

Verfahren zum Ummanteln von Profilen aus Holzpartikelwerkstof­ fen, insbesondere von gesägten oder gefrästen Profilen aus Faserplatten mittlerer Dichte mit Folien, gekennzeichnet da­ durch, daß die Profile einem mehrstufigen Glättungsprozeß un­ terworfen werden, wobei die Profile in einem ersten Arbeitsgang vor dem Ummanteln mittels Glättschuhen, die eine Oberfläche von geriffelter, raspel- oder feilenartiger Struktur aufweisen oder die aus mehreren Rakelblättchen bestehen, bei normaler Tempera­ tur vorgeglättet und anschließend, unmittelbar vor dem Ummanteln mittels beheizter glatter Profilrollen oder -walzen bei einer Temperatur von 40 . . . 250°C unter einem Druck von 50 . . . 300 N/cm2 zwischengeglättet werden, woran sich die in bekannter Wei­ se ablaufenden Arbeitsschritte des Ummantelns sowie eines mittels beheizter glatter Profilrollen erfolgenden Nachglättens an­ schließen.Process for sheathing profiles made of wood particle materials, in particular sawn or milled profiles made of medium-density fiberboard with foils, characterized in that the profiles are subjected to a multi-stage smoothing process, the profiles being coated in a first step by means of smooth shoes have a surface of corrugated, rasp-like or file-like structure or which consist of several doctor blades, pre-smoothed at normal temperature and then, immediately before coating, by means of heated, smooth profile rollers or rollers at a temperature of 40. . . 250 ° C under a pressure of 50. . . 300 N / cm 2 are smoothed between, which is followed by the known steps of sheathing as well as subsequent smoothing by means of heated, smooth profile rollers.
DE19863631325 1986-04-10 1986-09-15 Method for sheathing profile sections made of wood particle materials Withdrawn DE3631325A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD28895786A DD247870A1 (en) 1986-04-10 1986-04-10 METHOD FOR SHUTTERING PROFILES FROM WOODEN PARTICLES

Publications (1)

Publication Number Publication Date
DE3631325A1 true DE3631325A1 (en) 1987-10-15

Family

ID=5578044

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863631325 Withdrawn DE3631325A1 (en) 1986-04-10 1986-09-15 Method for sheathing profile sections made of wood particle materials

Country Status (2)

Country Link
DD (1) DD247870A1 (en)
DE (1) DE3631325A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2721549A1 (en) * 1994-06-24 1995-12-29 Prometub Ind Procedure for sticking a laminated sheet material to a support
EP0689910A1 (en) * 1994-06-21 1996-01-03 Alsapan S.A. Method for applying a surface decoration
WO1996014971A1 (en) * 1993-05-15 1996-05-23 Hermann Fendt Process for producing coated panel units
DE19630270A1 (en) * 1996-07-26 1998-01-29 Henkel Kgaa Surface coating process
DE19810148A1 (en) * 1998-03-10 1998-12-24 Wendt Maschinenbau Gmbh & Co K Conferring fine finishes to fibre-board or plastic panels with profiling
DE102013008022B3 (en) * 2013-05-03 2014-04-10 Konrad Scholz Apparatus for smoothing narrow surfaces of furniture manufacturing panels e.g. particle board used in furniture industry, has spring element that is contacted with coated or uncoated narrow surface of furniture manufacturing plate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004032058B4 (en) * 2004-07-01 2009-12-03 Fritz Egger Gmbh & Co. A method of making a panel having a decorative surface and a panel having a decorative surface

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996014971A1 (en) * 1993-05-15 1996-05-23 Hermann Fendt Process for producing coated panel units
EP0689910A1 (en) * 1994-06-21 1996-01-03 Alsapan S.A. Method for applying a surface decoration
FR2721549A1 (en) * 1994-06-24 1995-12-29 Prometub Ind Procedure for sticking a laminated sheet material to a support
DE19630270A1 (en) * 1996-07-26 1998-01-29 Henkel Kgaa Surface coating process
US6432237B1 (en) 1996-07-26 2002-08-13 Henkel Kommanditgesellschaft Auf Aktien Surface improving process
DE19810148A1 (en) * 1998-03-10 1998-12-24 Wendt Maschinenbau Gmbh & Co K Conferring fine finishes to fibre-board or plastic panels with profiling
DE19810148C2 (en) * 1998-03-10 1999-06-24 Wendt Maschinenbau Gmbh & Co K Process for the final surface treatment of rough chipboard or fiberboard, plastic board or similar components and device for carrying out this process
WO1999046094A1 (en) 1998-03-10 1999-09-16 Wendt Maschinenbau Gmbh & Co. Kg Method for the final surface working of rough chip boards, or similar structural parts and device for carrying out the method
DE102013008022B3 (en) * 2013-05-03 2014-04-10 Konrad Scholz Apparatus for smoothing narrow surfaces of furniture manufacturing panels e.g. particle board used in furniture industry, has spring element that is contacted with coated or uncoated narrow surface of furniture manufacturing plate

Also Published As

Publication number Publication date
DD247870A1 (en) 1987-07-22

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