WO2003086750A1 - Method for coating uneven substrates with thin coating materials and a layer support produced according thereto - Google Patents
Method for coating uneven substrates with thin coating materials and a layer support produced according thereto Download PDFInfo
- Publication number
- WO2003086750A1 WO2003086750A1 PCT/EP2003/003809 EP0303809W WO03086750A1 WO 2003086750 A1 WO2003086750 A1 WO 2003086750A1 EP 0303809 W EP0303809 W EP 0303809W WO 03086750 A1 WO03086750 A1 WO 03086750A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coating
- adhesive system
- layer support
- adhesive
- film
- Prior art date
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
- B29C63/02—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material
-
- 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
- B29C2063/006—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor of surfaces having irregularities or roughness
-
- 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
- B29C2063/483—Preparation of the surfaces by applying a liquid
- B29C2063/485—Preparation of the surfaces by applying a liquid the liquid being an adhesive
Definitions
- the invention relates to a method for coating uneven substrates, in particular wooden surfaces, with thin ones
- abrasive varnish treatment should first be mentioned here, in which the more or less uneven workpiece surfaces have to be smoothed by complex and cost-intensive processing measures such as grinding, filling and coating with multi-layer (and therefore very expensive) surface materials.
- These surface materials can, for example, be varnishes that are applied in large quantities in order to fill in the imperfections and to achieve appropriate surface smoothing.
- methods are also known according to which workpieces are coated with thin foils, in particular decorative foils, in order to improve the aesthetic value of such workpieces.
- Chipboard for general purposes such as furniture or interior fittings, bulk density: between 600 and 680 kg / m 3 .
- So-called x OSB ' Oriented Structural Board
- x OSB Oriented Structural Board
- They are statically calculable products for the construction industry in the form of stiffening plates, bulk density: 400 and 650 kg / m 3 .
- MDF medium density fiberboard
- products considered medium density bulk density: around 850 kg / m 3 .
- the spread of the density is between 600 and 900 kg / m 3 , with the designation ⁇ LDG 'for low density fiberboard' and 'HDF' for x high density fiberboard '.
- MDF boards and particle boards have a sufficient to good surface smoothness so that they can be formed into an acceptable, smooth and even surface with thin coating materials in subsequent work steps
- the other wood-based materials mentioned have a more or less uneven surface depending on the structure, which can only be smoothed by the complex processing measures mentioned above.
- the invention is based on the object of designing and developing the method for surface smoothing mentioned above and the layer support produced thereafter in such a way that even materials with uneven surfaces can be smoothed reliably and economically. It is also desirable that materials with a lower bulk density, which so far have not could be used for furniture or interior design, can find their way into this market segment on economic terms.
- This object is achieved with regard to the method in that a cover layer film and an adhesive system are used as the coating material, which gives the cover layer film filling and spanning properties of the material to be coated during the coating by chemical / physical reactions.
- the solution to the problem is that the coating materials have an adhesive system and a cover layer film and that the adhesive system contains fillers which fill and span defects in the material to be coated during the coating by chemical / physical reactions.
- the coating can be carried out under increased pressure, preferably under a pressure of 1 ⁇ 10 5 Pa to 6 ⁇ 10 6 Pa (1 to 60 bar).
- the coating can also be carried out at elevated temperature, preferably at a temperature of 150 to 170 ° C.
- the duration of the bonding under increased pressure and / or elevated temperature is 5 to 300 seconds. is.
- the hardening after the coating also takes place at room temperature or at an elevated temperature.
- a temperature range of 20 to 200 ° C has proven to be expedient here.
- the surface according to the invention can be produced continuously or batchwise.
- a foaming adhesive is used as the adhesive system in the layer carrier according to the invention.
- Wet adhesives with the following base polymers can be used:
- PVAc, EVAc, PUR acrylates, styrene-acrylates, styrenes, styrene-butadiene, UF, MF, resorcinol, phenol, PVa or mixtures thereof as well as natural and synthetic rubber, epoxy resins, the base polymers being chemically crosslinked, for example with isocyanates (one-component, two-component) or reactive one-component can achieve higher cohesiveness.
- the adhesive system located between the cover layer film and the carrier material (workpiece) consists of a thermosetting dry glue adhesive or a corresponding dry glue film.
- a thermosetting dry glue adhesive or a corresponding dry glue film.
- This can be, for example, a melamine-soaked overlay paper act for coating, applied to the surface of the workpiece to be smoothed, pressed against a corresponding press plate for a predetermined period of time under pressure and temperature. A good overvoltage is achieved here.
- thermoplastic dry glue adhesive or a corresponding dry glue film as the adhesive system located between the cover layer film and the workpiece.
- thermoplastic dry glue adhesive or a corresponding dry glue film
- EVA ethylene vinyl acetate
- Dispersion-impregnated or thermoset-impregnated papers or thermoplastic films made of polyethylene (PE) or polypropylene (PP) can also be used for this purpose.
- the adhesive system can also have chemically inflatable ingredients in which degassing or foaming occurs during the coating process by means of chemical / physical reactions, which leads to the gas released (for example C0 2 ) acting as a propellant gas, which solid particles ( Fillers or polymer particles) from the starting polymer into the defects (depressions and unevenness) present in the workpiece surface, which are thereby filled.
- gas released for example C0 2
- solid particles Fillers or polymer particles
- the adhesive system prefferably be applied either a) to the substrate to be coated, b) by spraying / applying to the back of the film or c) by transferring a layer of dry glue.
- the cover layer films used preferably consist of paper with different impregnation, such as starch glues, resin glues, urea-acrylate systems, melamine systems, dextrins, polyvinyl alcohols or the like.
- the top layer film to be used preferably has a basis weight of 30 to 500 g / m 2 and the adhesive application used has a basis weight between 20 and 300 g / m 2 .
- the filler content is between 5 and 70%.
- the chemical / physical reaction to split off the propellant also under the influence of acid donors, preferably the liquid or dry acid donor being offered, either by spraying, rolling or by overlaying from the back of the film or the top of the substrate.
- acid donors preferably the liquid or dry acid donor being offered, either by spraying, rolling or by overlaying from the back of the film or the top of the substrate.
- a masked (encapsulated) acid can also be used, which is introduced into the adhesive and loses its protection under pressure and / or temperature, but releases its pH drop in the adhesive system either C0 2 or other gassing materials. Both inorganic and organic acids can be used as acids.
- the adhesive systems used show the decisive advantage that the hollow or missing parts of the wood-based panels can be filled in or spanned and, in conjunction with the thinnest possible foils, result in well-spanning and smooth surfaces.
- OSB materials can be treated in such a way that they are qualitatively superior to other marketable materials such as chipboard or MDF. Due to a significantly lower weight of 400 to 600 kg / m 3 and other physical properties, such as a very high flexural strength, high
- Drilling strength / drilling pull-out strength and also their significantly lower swelling behavior can be used without problems for the furniture sector or for interior construction.
- An example of a formulation of an adhesive system of a layer support according to the invention is as follows: UF resin 10 - 70% by weight
- Acid donor (citric acid 3 - 50% or maleic anhydride 5 - 30%)
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03746293A EP1494854A1 (en) | 2002-04-18 | 2003-04-12 | Method for coating uneven substrates with thin coating materials and a layer support produced according thereto |
CA002485269A CA2485269A1 (en) | 2002-04-18 | 2003-04-12 | Method for coating uneven substrates with thin coating materials and a layer support produced according thereto |
AU2003232203A AU2003232203A1 (en) | 2002-04-18 | 2003-04-12 | Method for coating uneven substrates with thin coating materials and a layer support produced according thereto |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10217237.4 | 2002-04-18 | ||
DE10217237 | 2002-04-18 | ||
DE10230647A DE10230647A1 (en) | 2002-04-18 | 2002-07-08 | Process for coating uneven surfaces with thin coating materials and a substrate produced thereafter |
DE10230647.8 | 2002-07-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003086750A1 true WO2003086750A1 (en) | 2003-10-23 |
Family
ID=29251769
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/003809 WO2003086750A1 (en) | 2002-04-18 | 2003-04-12 | Method for coating uneven substrates with thin coating materials and a layer support produced according thereto |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1494854A1 (en) |
AU (1) | AU2003232203A1 (en) |
CA (1) | CA2485269A1 (en) |
WO (1) | WO2003086750A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1588814A1 (en) * | 2004-04-22 | 2005-10-26 | Henkel Kommanditgesellschaft auf Aktien | Method of manufacturing objects from a polyurethan-binder and a cellulosic material |
WO2009005461A1 (en) * | 2007-07-05 | 2009-01-08 | Akzo Nobel Coatings International B V | Hardener composition, adhesive system and method of gluing |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5436069A (en) * | 1992-02-05 | 1995-07-25 | Weyerhaeuser Co | Surfaced cellulose composite panel and panel forming method |
JPH07195307A (en) * | 1993-12-28 | 1995-08-01 | Mitsui Toatsu Chem Inc | Mending method of woody material |
DE19630270A1 (en) * | 1996-07-26 | 1998-01-29 | Henkel Kgaa | Surface coating process |
DE19752836A1 (en) * | 1997-11-28 | 1999-06-10 | Dorus Klebetechnik Gmbh & Co K | Composite material with a relief surface, use of material and manufacturing process |
-
2003
- 2003-04-12 WO PCT/EP2003/003809 patent/WO2003086750A1/en not_active Application Discontinuation
- 2003-04-12 EP EP03746293A patent/EP1494854A1/en not_active Withdrawn
- 2003-04-12 CA CA002485269A patent/CA2485269A1/en not_active Abandoned
- 2003-04-12 AU AU2003232203A patent/AU2003232203A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5436069A (en) * | 1992-02-05 | 1995-07-25 | Weyerhaeuser Co | Surfaced cellulose composite panel and panel forming method |
JPH07195307A (en) * | 1993-12-28 | 1995-08-01 | Mitsui Toatsu Chem Inc | Mending method of woody material |
DE19630270A1 (en) * | 1996-07-26 | 1998-01-29 | Henkel Kgaa | Surface coating process |
DE19752836A1 (en) * | 1997-11-28 | 1999-06-10 | Dorus Klebetechnik Gmbh & Co K | Composite material with a relief surface, use of material and manufacturing process |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 11 26 December 1995 (1995-12-26) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1588814A1 (en) * | 2004-04-22 | 2005-10-26 | Henkel Kommanditgesellschaft auf Aktien | Method of manufacturing objects from a polyurethan-binder and a cellulosic material |
WO2009005461A1 (en) * | 2007-07-05 | 2009-01-08 | Akzo Nobel Coatings International B V | Hardener composition, adhesive system and method of gluing |
EA016846B1 (en) * | 2007-07-05 | 2012-07-30 | Акцо Нобель Коатингс Интернэшнл Б В | Hardener composition, adhesive system and method of gluing |
US8410204B2 (en) | 2007-07-05 | 2013-04-02 | Akzo Nobel Coatings International B.V. | Hardener composition, adhesive system and method of gluing |
Also Published As
Publication number | Publication date |
---|---|
CA2485269A1 (en) | 2003-10-23 |
AU2003232203A1 (en) | 2003-10-27 |
AU2003232203A8 (en) | 2003-10-27 |
EP1494854A1 (en) | 2005-01-12 |
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