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EP2227392A1 - Procédé d'application d'un revêtement sur les deux faces d'une pièce moulée en plâtre ou en matériau dérivé du bois - Google Patents

Procédé d'application d'un revêtement sur les deux faces d'une pièce moulée en plâtre ou en matériau dérivé du bois

Info

Publication number
EP2227392A1
EP2227392A1 EP08862036A EP08862036A EP2227392A1 EP 2227392 A1 EP2227392 A1 EP 2227392A1 EP 08862036 A EP08862036 A EP 08862036A EP 08862036 A EP08862036 A EP 08862036A EP 2227392 A1 EP2227392 A1 EP 2227392A1
Authority
EP
European Patent Office
Prior art keywords
films
wood
chambers
gypsum
molding
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Withdrawn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
EP08862036A
Other languages
German (de)
English (en)
Inventor
Lars Koppelmann
Roland Streng
Joachim Strauch
Markus Salzmann
Peter Kitzel
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to EP08862036A priority Critical patent/EP2227392A1/fr
Publication of EP2227392A1 publication Critical patent/EP2227392A1/fr
Withdrawn legal-status Critical Current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
    • B29C63/02—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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/16—Lining or labelling
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/56—Compression moulding under special conditions, e.g. vacuum
    • B29C2043/561—Compression moulding under special conditions, e.g. vacuum under vacuum conditions
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/006—Using vacuum
    • 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
    • B29K2311/00—Use of natural products or their composites, not provided for in groups B29K2201/00 - B29K2309/00, as reinforcement
    • B29K2311/14—Wood, e.g. woodboard or fibreboard
    • 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

Definitions

  • the invention relates to a method for coating both sides of a wood-based material or gypsum material molding with a plastic film, characterized in that
  • the molded part is arranged and fixed in a capsule between the plastic films to be applied at a distance ratio, so that 3 chambers A,
  • Shape and surface can be subsequently only lavishly changed in wood-based or gypsum material moldings. This is especially true in the case of molded parts which have a structured three-dimensional surface. Straight look and features - such as feel or easy care - the wood material or gypsum material moldings often leave much to be desired.
  • Object of the present invention was therefore to find a method that allows a simple and subsequent surface design of wood-based or gypsum material moldings.
  • chamber A Separate chambers between wood-based material or gypsum material molding and foil (chamber A), as well as between foil and capsule wall (chamber B).
  • the chambers A and B are simultaneously or preferably successively subjected to a vacuum.
  • buckling of the film, or premature contact of the film with the wood-based or gypsum material molding is prevented.
  • the vacuum in chamber B By releasing the vacuum in chamber B to atmospheric pressure, the film is pressed onto the wood-based material or gypsum material molding, while the vacuum in chamber A is still maintained;
  • the adhesive can be based either on an aqueous, VOC-free PU base, or on a sprayable (PU) hotmelt, which is applied with a special application gun.
  • PU sprayable
  • the inventive method is surprisingly suitable for two- or multi-sided coating of wood-based or gypsum material moldings, which were previously accessible to a coating with plastic film only in several steps.
  • wood chipboard materials such as chipboard or chipboard
  • wood fiber materials such as porous fiberboard, bitumen Fiber board, MDF or HDF.
  • Gypsum materials are to be understood in particular as gypsum plasterboard, gypsum fiber or gypsum chipboard shaped articles such as, for example, ribbons.
  • FERMACELL consists of gypsum and paper fibers, which are obtained in a recycling process from paper. These two natural raw materials are mixed and pressed after addition of water - without further binders - under high pressure to stable plates, dried, impregnated with a water-repellent and tailored to the required formats.
  • FERMACELL is a construction, fire protection and damp-proofing board at the same time.
  • the adhesives used are preferably aqueous polyurethane-based systems, both one-component and two-component systems.
  • PU dispersions come into consideration, for example Jowapur® 150.50 may be mentioned here.
  • Suitable two-component adhesives are combinations of PU dispersions such as, for example, Jowapur® 150.30 with isocyanates such as, for example, Jowat® 195.40.
  • adhesives based on acrylate or epoxy resin are also suitable for use.
  • the application of the adhesive may be by conventional methods such as brushing, rolling or spraying, with spraying being particularly preferred. A drying time of 20 minutes at room temperature following the adhesive application is sufficient in the systems described.
  • hot melt adhesives which are rolled up, lapped, rolled and sprayed.
  • polyurethane adhesives are used which crosslink with moisture.
  • Suitable plastic films are, in particular, polyvinyl chloride, styrene copolymers, polypropylene, polyvinylidene fluoride, thermoplastic polyurethane (TPU) and polymethyl methacrylate (PMMA). Due to their weather resistance, especially polyvinyl chloride and styrene copolymers such as SAN, AMSAN and in particular ASA have proved suitable for outdoor applications. In the case of, for example, the ASA
  • the film may be modified by 0.5-30% by weight of a thermoplastic elastomer.
  • Typical typical thermoplastic elastomer classes include: TPE-O (olefin-based thermoplastic elastomers, predominantly PP / EPDM), TPE-V (olefin-based cross-linked thermoplastic elastomers, predominantly PP / EPDM), TPE-U (urethane-based thermoplastic elastomers), TPE E (thermoplastic copolyesters) TPE-S (styrene block copolymers such as SBS, SEBS, SEPS, SEEPS, MBS) and TPE-A (thermoplastic copolyamides, eg PEBA).
  • TPE-O olefin-based thermoplastic elastomers, predominantly PP / EPDM
  • TPE-V olefin-based cross-linked thermoplastic elastomers, predominantly PP / EPDM
  • TPE-U urethane-based thermoplastic e
  • SAN, AMSAN, ASA, TPU or PMMA films are particularly preferably used.
  • Particularly preferred is the use of coextrusion films which have a hard and scratch-resistant cover layer and a softer support layer.
  • a coextrusion film with a hard, scratch-resistant outer layer such as PMMA and a more flexible ASA inner layer is suitable.
  • the coextruded two-layer films described in WO-A 96/23823 and WO-A 97/46608 for coating wood-based or gypsum-material molded parts.
  • the two-layer films consist of a carrier layer such as polystyrene or HIPS and a primer layer, for example based on elastomeric styrene-butadiene block polymers.
  • a carrier layer such as polystyrene or HIPS
  • a primer layer for example based on elastomeric styrene-butadiene block polymers.
  • an additional adhesive can usually be dispensed with in these cases.
  • the coextruded film is pressed onto the fibreboard in such a way that the adhesion promoter layer comes into direct contact with the plate.
  • the films described in the sections above can be used both in various solid colors and printed surfaces.
  • the surface can be structured by various embossing rollers during the extrusion of the film.
  • the films used have a thickness between 50 and 750 .mu.m, preferably between 100 and 500 .mu.m and particularly preferably between 200 and 350 .mu.m. They may be prepared from the corresponding granular precursors by the known film production processes, the extrusion process being preferred for cast film production.
  • the films may have been corona treated on one or both sides.
  • the wood-based or plaster-molded parts to be coated generally have a dimension of approximately 100 ⁇ 150 cm in size up to a few square meters.
  • the plates can be several meters long.
  • the wood-based or gypsum-metal molded parts are decisively improved in their load-bearing capacity and resistance to breakage. This is achieved by the complete removal of air between the plate and the film, which can not be done with conventional lamination process. Furthermore, by applying the vacuum, the film is pressed onto the plate, which results in a strong bond between the film and the plate, which can be intensified by the application of an adhesive.
  • the plastic film can act as a primer, which allows easy post-treatment such as brushing, printing, for example, with advertising slogans, etc.
  • Films such as the above-mentioned ASA films can be subsequently changed in color and shape by a suitable post-treatment such as brushing, printing or embossing.
  • coated wood-based or gypsum material moldings can be cleaned more easily, for example by washing with soapy water, than the uncoated molded parts.
  • coated wood-based or gypsum-molded parts are suitable for interior applications in construction.
  • the moldings come as wall or ceiling paneling, partitions, doors, window frames, window sills, baseboards, railings, handrails, balcony clothing, expansion boards, housing of speakers and Hifiellon etc. in question.
  • the process according to the invention for coating wood-based or gypsum-material molded parts with a three-dimensionally structured upper part is particularly advantageous.
  • Surface suitable because these moldings were not to be coated with the previous methods of the prior art. The only option so far was to paint these moldings consuming.
  • Examples of molded parts with a three-dimensionally structured surface are cassette doors, doors with ornamental cuts (emblems or ornaments), decorative and design profiles for interior fittings, curved column cladding, slabs with imitated roughing structure.
  • wood-based or gypsum material boards with at least one three-dimensionally structured surface are particularly advantageous.
  • the coated moldings for bathroom or kitchen facilities, as they are easy to clean and are exposed to high humidity. If desired, the liquid absorption of the wood-based or gypsum material molding can be almost completely suppressed by the coating with a plastic film.
  • the pest infestation - such as by fungi and mites - which is already already smaller than in uncoated moldings, be further minimized.
  • the coated molded parts can therefore be used, in particular, in allergy-free apartments and in hospitals.
  • the wood-based or gypsum-metal molded parts according to the invention are outstandingly suitable for laminating, for example, cable ducts, roller shutter boxes and curtain hangings.
  • the moldings can be quickly adapted to the given requirements, for example by cutting.
  • Two-sided coating for example, of an MDF with a three-dimensional surface structure with an ASA film
  • the substrate to be coated on both sides was an MDF board made of TOPAN® Standard, a commercially available MDF board from Glunz AG.
  • the plate was 120 cm long, 80 cm wide and 19 mm high and had various ornamental cuts on one side.
  • the adhesive was first applied.
  • the adhesive used was an aqueous two-component system (consisting of binder and hardener) based on polyurethane, which was prepared immediately before application by mixing the two individual components. To obtain a homogeneous mixture, the mixture was stirred at room temperature for at least 3 minutes using a KPG stirrer.
  • the adhesive was applied by means of a spray gun of Type Walther Pilot applied in an amount of about 80 g / m 2 on both surfaces and on the 4 edges of the molding. Subsequently, the molding was allowed to dry for 20 minutes at room temperature.
  • the MDF board was fixed by a stop at the two head ends (opposite side surfaces) and positioned in the center of the coating capsule.
  • the two plastic films to be applied were in each case mounted between the capsule wall and the molded part. This created 3 chambers in the coating capsule: a chamber between the two plastic films, in the middle of which was positioned the MDF board (chamber A). The two other chambers were located between the plastic film and the capsule wall (chamber B, C).
  • the two plastic films hit one another and at this point a weld forms, which forms a frame around the entire molded part on the side surfaces.
  • the adhesive on the top and side surfaces of the molded part was also activated, resulting in a very good adhesion between the adhesive and the plastic film after completion of the process.
  • the coated molded part could be removed from the capsule. The overlapping film passing over the weld was manually removed with a sharp blade.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un procédé d'application d'une feuille de plastique sur les deux faces d'une pièce moulée en plâtre ou en matériau dérivé du bois, caractérisé en ce que a) la pièce moulée est placée et fixée dans une capsule entre les feuilles de plastique à appliquer à une certaine distance de ces dernières, de sorte que 3 chambres (A, B et C) sont formées, à savoir une chambre (A) entre les deux feuilles de plastique, au milieu de laquelle la pièce moulée est positionnée, et deux chambres (B et C) entre une feuille de plastique et une paroi de la capsule, b) l'air est évacué des chambres A, B et C, c) les feuilles sont chauffées, d) les chambres B et C sont détendues à la pression atmosphérique avec l'air extérieur et e) les feuilles sont pressées contre des faces opposées de la pièce moulée, tandis qu'un vide est maintenu entre les feuilles.
EP08862036A 2007-12-19 2008-12-18 Procédé d'application d'un revêtement sur les deux faces d'une pièce moulée en plâtre ou en matériau dérivé du bois Withdrawn EP2227392A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08862036A EP2227392A1 (fr) 2007-12-19 2008-12-18 Procédé d'application d'un revêtement sur les deux faces d'une pièce moulée en plâtre ou en matériau dérivé du bois

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP07123658 2007-12-19
EP08862036A EP2227392A1 (fr) 2007-12-19 2008-12-18 Procédé d'application d'un revêtement sur les deux faces d'une pièce moulée en plâtre ou en matériau dérivé du bois
PCT/EP2008/067921 WO2009077597A1 (fr) 2007-12-19 2008-12-18 Procédé d'application d'un revêtement sur les deux faces d'une pièce moulée en plâtre ou en matériau dérivé du bois

Publications (1)

Publication Number Publication Date
EP2227392A1 true EP2227392A1 (fr) 2010-09-15

Family

ID=40626640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08862036A Withdrawn EP2227392A1 (fr) 2007-12-19 2008-12-18 Procédé d'application d'un revêtement sur les deux faces d'une pièce moulée en plâtre ou en matériau dérivé du bois

Country Status (2)

Country Link
EP (1) EP2227392A1 (fr)
WO (1) WO2009077597A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4894102A (en) * 1985-03-04 1990-01-16 Kenneth F. Halls Method for refinishing building panels
JPS6371333A (ja) * 1986-09-12 1988-03-31 Asahi Glass Co Ltd 積層体の製造方法及びその装置
DE19914356C2 (de) * 1999-03-30 2003-02-20 Siempelkamp Gmbh & Co Folien-Legeanlage zum oberseitigen oder unterseitigen Belegen von Trägerplatten mit Folien
ES2203527T3 (es) * 1999-11-02 2004-04-16 Richard Warrington George Metodo y aparatos para termoformacion de hojas de plastico.
EP2155489A2 (fr) * 2007-05-08 2010-02-24 Basf Se Procédé de revêtement des deux faces d'une pièce moulée en un produit mousse dur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009077597A1 *

Also Published As

Publication number Publication date
WO2009077597A1 (fr) 2009-06-25

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