DE3302599A1 - Coated wood material and process for the manufacture thereof - Google Patents

Description

-1D-

Coated wood-based material and methods for its manufacture.

The invention relates to a coated wood-based material, which consists of a composite of wood-based material, adhesive and thermoplastic film.

Up to now, wooden panels have been coated with sheet surface materials either by hot lamination with impregnated paper or by cold lamination with thermoplastic film. the

Hot lamination is preferably done with urea-formaldehyde resin. This hot lamination cannot be used on thermoplastic films, as their Uicat-Er-15. softening temperature, d. H. the temperature at which the polymer begins to collapse is very low is.

The Vicat softening temperature is defined in DIIM 53 ^ SO than the temperature at which in the increasingly heated flat plastic sample a defined load

1 mm 0 1 mm deep steel pin penetrated.

If a thermoplastic film is heated above this softening temperature, it will deform and

Shrinkage of the film. That is why when coating lamination with thermoplastic film is mainly carried out without heating the film, in the case of Hieber dispersions based on vinyl chloride-vinyl acetate, ethylene-vinyl acetate and acrylate copolymers can be used. aside from that the condensation resins would not adhere to this film.

1D The hardness of this adhesive dispersions is densatiansharze orders of magnitude less than the hardness of the thermoset con- \, which are used in the hot lamination van paper. The hardness of hot-melt adhesives, which are used in special cases when laminating with thermoplastic film, is in the range of the above-mentioned adhesive dispersions. The hardness of these adhesives is often even lower than the hardness of the thermoplastic films.

It has now been found that essential performance properties of the wood-based material coated with thermoplastic foils of the type of adhesive to be influenced. This influence becomes clear when one takes into account that the layer thicknesses of foil and adhesive are preferably 1: 1 to

4: 1 behavior. Essential for the usage behavior is var all things the influence on the hardness and the heat resistance of the l / erbundes. Because the thermoplastic foils, which are mainly used for cold lamination on wood-based panels a low ball indentation hardness according to DIN 53 ^ 56

2 in the range of 2DO to 7GG kp / cm and one show lower softening temperature, it is particularly important to have these properties through the adhesive to influence.

\ The duromer-impregnated ones used for hot lamination Papers have a higher ball indentation hardness and a significantly higher resistance to noise and it is therefore not necessary to influence these properties by choosing the appropriate adhesive.

It was the aim and object of the present invention Therefore, to create a wood-based material coated with a thermoplastic film, compared to the previous known coated wood-based materials has improved properties, as well as a V / experience for production a wood-based material coated with foils based on thermoplastics with improved Find properties.

- 13 -

This object was achieved by the invention coated wood-based material that consists of a composite consists of thermoplastic film, adhesive and wood-based material and which is characterized in that between the wood-based material and the thermoplastic Foil a layer of a thermoset adhesive is located.

According to the invention, a wood material such as z. B. a chipboard, a thermoplastic film is applied. Foils are preferably used, those made of polyethylene, polypropylene, or polyvinyl chloride exist. The film used preferably has a ball indentation hardness according to DIN 53if56 in the

2
range from 200 to 700 kp / cm. Films with a Vicat softening temperature (USPB) of k0 to 100 C have proven to be particularly suitable for the production of the newly coated wood materials.

The thermoplastic film is then cold or glued to the wood-based material below the softening temperature. The gluing takes place with With the help of a thermosetting adhesive. In doing so, are preferred Formaldehyde condensation resins based

Urea, melamine and phenol are used. These condensation resins show excellent properties as adhesive agents as they are heat-resistant, hard and are highly reactive. It has now been found that such Resins are particularly suitable for lamination thermoplastic foils on wood-based material, as they improve surface hardness, noise resistance, the surface smoothness and the purple water resistance improve the resulting network. 1G

The thermosetting adhesive layer is made in one thickness >>. from D, D1 to 0.1 mm, preferably from 0.03 to 0.05 mm applied. Adhesives with a ball indentation hardness are preferably used

2 DIIM 53456 from 2000 to 4000 kp / cm. The duromere

2 adhesive application rate is 10 to 150 g / m,

2
preferably 30 to 80 g / m 2.

A particularly preferred embodiment is that Cold bonding with urea-formaldehyde resins. For this purpose, a reaction accelerator layer is expediently applied to the film to apply. This can be done both in film production and in lamination happen. The reaction then proceeds very quickly.

The high reactivity of the thermosetting adhesive is necessary the much better surface smoothness of the newly coated wood-based materials. One Impairment of the surface smoothness, which as 5 surface unrest is indicated by the swelling of the wood-based material. This swelling is reduced by a factor of 5 due to the rapid reaction of the thermoset adhesive, so that the modern gluing with thermoset adhesives leads to much better surfaces than conventional gluing with the inert ones Dispersion adhesives. The thermoset adhesive layer

'. According to a preferred embodiment, it is in direct contact with the film, that is to say without the interposition of a composite layer of granular, fiber-containing or geuiebe-like material. This embodiment is preferably used for films based on polyolefins.

According to the particularly preferred and advantageous embodiment the film or at least one surface or surface layer of the film contains reactive Groups associated with the thermoset adhesive the basis of a formaldehyde condensation resin are reactive. The reactive groups of the

Films are made according to the preferred embodiment from hydroxyl and / or methoxy groups and / or N-methylol groups C (= N-CH_-DH) groups] and / or (= N-CH_QR) groups. The one on at least one 5 surface or surface layer hydroxyl groups Containing plastic films consist according to a preferred embodiment of cellulose, cellulose derivatives and / or starch and an olefin homound / order copolymer or vinyl chloride-1G homo-, co- or graft polymer.

\ As strength are the known starches such. B. Kai / potato starch and the like. Suitable saujie chemically and / or physically modified, finely divided bzuj. fine-grained types of starch and starch degradation products. However, finely divided or fine-grain pop starches (in particular potato starch), grain starches (in particular corn starch) and / or root starches are preferably used. The starch can be partially replaced by lignin after an execution farm. In a preferred embodiment, finely divided or fine-grained mixtures of cellulose and starch are used. Hydraxy groups of other compounds, e.g. B. van Uinylalkaholen, do not give a strong bond within the

combination according to the invention.

In the context of the invention, finely divided pure or
Less pure, native or regenerated cellulose
suitable. O6-cellulose, ß-cellulose _f

υ -cellulose, cotton with a cellulose content of at least 80 % or regenerated cellulose are used. Of the cellulose derivatives, preference is given to using cellulose ethers, in particular methyl-hydroxy-ethyl cellulose and / or cellulose esters.

The film based on an olefin homo- or copoly-

merisates / contains according to the preferred embodiment on the surface layer and in the inner core bztii.

the inner or intermediate layers hydroxy and / or
Methoxy and / or C = IM-CH -OH) groups and / or C = IM-CH -OR) groups, so that in this preferred embodiment the wood-based material is directly connected to the thermoset adhesive layer, that is, without the interposition of a composite layer of granular , fibrous or fabric-like material is connected to the film.

A preferred component of the thermoset adhesive is preferably the hardener component, an acid or an acidic compound is used.

According to another embodiment, the reactive groups contained on at least one surface of the surface layer consist of methaxy and / or methylal groups [C = IM-CH -OH) groups] and / or C = IM-CH "-OR) -Groups, which preferably with the use of hexamethaxy-methylmelamine and / or non-plasticized melamine resin or reaction products of these compounds _f before, during or after the production of the plastics or plastic films based on olefin ham and / or copolymers or vinyl chloride homo-, copolymer or graft polymer are added.

The cellulose bzuj. Amount of starch is appropriate between 1 and 50% by weight, based on the sum of polyolefin or polyvinyl chloride and cellulose. Will If a proportion of 50% is exceeded, the product increasingly loses its flaky character and a paper-like appearance Character comes to the fore. The improvement in surface activation achieved is less than 1% not pronounced enough. The film preferably contains 3 to 30% by weight of cellulose.

The degree of fineness of the cellulose in the invention The film is suitably between 1 and 100 p.m.

A finer degree of distribution is too costly, with larger particles problems arise during production smoother foils. In the case of fibrous cellulose however, particles up to 5 detex with a greater average length of 3GG p, m can also be used, without fundamental difficulties arising with regard to the formation of the film.

According to a preferred embodiment, the thermoplastic film based on a vinyl chloride homo- and / or copolymer contains no or only a small proportion of a compound containing free hydroxyl and / or 1M-methylol groups [C = N-CH-OH) groups ] and / or C = N-CH "-OR) groups, but an adhesive layer located as a surface layer on the film, so that the thermosetting layer or the thermosetting material is connected to the film via this adhesive layer. The adhesive layer located on the film as a surface layer consists of at least one hydroxyl and / or methoxy and / or N-methyl-group [C = N-CH ₂ -OH) group] and / or C = N-CH -OR) - group-containing compound and a binder. A k to 70% by weight, preferably 7 to 35% by weight, resin emulsion, resin dispersion, but preferably a resin solution, is used to produce the adhesive layer. As resin

UinylchlGridcapalymerisate are preferably used. The synthetic resin emulsians, synthetic resin dispersians, preferably the synthetic resin solutions one in the production of the compounds to, the hydroxyl and / or N-methylol groups CC = IM-CH-OH) groups] and / or C = N-GH -OR) groups, uiie z. B. cellulose, CellulDseäther, starch usüj., So that Adhesive dispersions preferred even when synthetic resin solutions have been added after these substances have been added develop. When using connections that IM methylol groups (CC = N-CH-OH) groups] and / or C = N-CH -OR) groups, for example when using of hexamethoxy-methylmelamine or a non-plasticized one Melamine resin, however, can also be used for solutions can be used. The addition of these compounds, the hydroxy and / or IM methylal groups CC = IM-CH -OH) groups] and / or contain C = N-CH -OR) groups, takes place in amounts by weight of 5 to 65% by weight, "preferably 7 to 35% by weight, based on the ready-to-use Adhesive dispersions).

As polyolefins are preferred in the context of the invention all kinds of polyethylene including high density polyethylene (CHDPE), lower polyethylene Density CLDPE), polypropylene, polybutene-1, mixed polymers

of ethylene and propylene as well as the copolymers of ethylene or propylene, which have a thermal resistance WSP A over 100 ^D C based on any mixtures of these substances. In the case of the copolymers, especially those with vinyl compounds come into consideration. In the use of polyethylene and ethylene copolymers are preferably those having a melting point of greater than 110 C, at PropylenhomD- and -copolymeri-saten those having a melting point of greater than 130 ⁰ C.

The film according to the invention can additionally also contain mineral fillers. Such fillers for polymer films are known. Particularly mica, talc, silicates and silicas in their various forms are suitable and therefore preferred To shape. Examples of other useful mineral fillers are carbonates, especially calcium carbonates such as limestone and chalk, as well as magnesium carbonates and the like, which are in very finely divided farm can be used.

By adding suitable mineral fillers, properties such as Vicat point, Shore hardness and tensile strength. If such mine-

ral fillers are present, contains the foil expediently 1 to 35% by weight, preferably 2 to 30% by weight, based on the sum of polyolefin bzui. Polyvinyl chloride and cellulose and / or starch. 5

In addition, the film can also contain one or more organic modifiers. These serve to control toughness, calenderability, Extrudability and similar properties. One preferred group for this are block polymers of styrene with butadiene or isobutylene or isoprene. Other suitable modifiers are polymers based on styrene-butadiene, methacrylate-butadiene-styrene. Polyolefins that contain functional groups are particularly suitable for influencing the relationship between physical properties and adhesiveness. Such modification additives are expedient in an amount of 0.5 to 20 wt .-%, preferably from 2 to 10 wt .-%, based in each case on the sum of polyolefin or polyvinyl chloride and cellulose, starch and the like. Present.

Monofilms or composite or multilayer films, for example coextruded films can be used. The specified maximum film thickness

of 0.5 mm is used in the Normally not exceeded, but thicker foils can also be used. The used Foils can be printed or unprinted with a wooden structure provided as a pattern or as a transparent bzui. transparent foils or as colored foils for Use.

As already mentioned, the advantages of the invention come Foil is more effective if it improves surface adhesion Treatment. Preferably consists this surface treatment in the form of an activation by irradiation. Corona treatment is again preferred among the radiation methods. However, other irradiation methods can also be used.

Examples of other suitable irradiation methods are electron irradiation, UV irradiation and / or Laser irradiation. Suitable devices are also available here.

Other suitable activation methods are, for example, treatment with an oxidizing flame

-Zk-

Gder with ozone or ozone-containing gaseous or liquid funds.

The activating surface treatment can be used in the inventive film at any time be made. In particular, it is possible to carry out the surface activation directly in the Make connection to the film production, as in contrast to the previously known such Foils the effect of surface activation persists during storage or when the temperature is increased.

According to the method according to the invention, the plastic film based on a thermoplastic, which contains at least one surface or surface layer of those reactive groups or compounds with reactive groups that are reactive with the thermoset adhesive or a constituent or a component of the thermoset adhesive, with the Wood-based material connected by means of the thermoset adhesive at temperatures below 110 ^° C., preferably at temperatures up to 80 ° C., with the application of pressure. According to the preferred embodiment, those plastic films are used that are on at least one surface or surface

layer hydroxy and / or methoxy and / or (= (\ I-CH -OH) groups and / or C = N-CH -OR) groups and / or contain connections with these groups.

As a more durable adhesive, one of two or multiple components existing adhesive used, which is preferably a condensation resin based on an amine, amino or phenol-formaldehyde resin is. As the duramer adhesive based on a formaldehyde cantation resin are preferred Melamine-formaldehyde, urea-formaldehyde or phenol-type aldehyde resins are used. At least one campanent of the thermoset adhesive is after a preferably a water-soluble hardener.

The hardener and the other reacting to the condensation resin Component (s) are each listed separately the plastic film or the wood-based material applied (so that the components are each located separately on the different substrates) and below the plastic film with the wooden material under pressure united.

Those on at least one surface or surface layer Hydroxy groups and / or compounds with Plastic films containing hydraxy groups

hold cellulose, cellulose derivatives and / or starch and are based on a GlefinhDmo- and / or copolymer or vinyl chloride homo-, -co- or -Graftpalymerisats built up. Which on at least one surface of the surface layer methoxy and / or IM-methylol groups (C = IM-CH-OH) and / or Plastic films containing C = IM-CH-OR) groups uierden preferably using hexamethoxy-methylmelamine and / or non-plasticized melamine resin. With the C = IM-CH -OFO groups R denotes an alkyl radical having 1 to 3 carbon atoms, preferably a methyl radical. The addition of hexamethoxy-methylmelamine CHMM) is preferably carried out to linear polyurethane and / or to vinyl chloride homo- or copolymers with hydroxy-containing compounds, groups or monomers.

According to the method according to the invention, the Films for improving the reactivity of the substances contained on the surface or surface layer Hydroxy and / or methoxy groups and / or C = IM-CH “-OH) groups and / or C = IM-CH -OR) groups prior to gluing a corona treatment and / or exposure to van exposed to high-energy rays.

The plastic films are associated with the concomitant use of the veins durameren adhesive in a Rallenheißkaschieranlage in a press at a temperature between ^ tD and 11G ⁰ C, preferably 50 to 8G ° C, under pressure with the wood material. According to another preferred embodiment, the plastic films are joined under pressure to the wood-based material using the thermoset adhesive in a roll lamination system at temperatures of 5 to 0 C, preferably 1D to 35 ^{0 C.}

*. According to the method according to the invention such

Films based on an olefin homo- or copolymer are used which have hydroxyl and / or methoxy and / or C = N-CH -OH) groups and / or or (= N-CH ₂ -DR) groups. According to this embodiment, the wood-based material is glued to the foils directly via the thermoset adhesive layer, that is to say without the interposition of a composite layer made of granular, fibrous or fabric-like material. One component of the thermoset adhesive, preferably the hardener component, is an acid or an acidic compound.

According to the other preferred embodiment of the

According to the inventive method, thermoplastic films based on a vinyl chloride hamo- and / or adder -capalymerisates are used, which contain no or only a small proportion of a compound containing free hydroxyl and / or 1M-methylal groups (C = N-CH-DH) and / or C = N-CH -OFO groups. According to this embodiment, the thermoset adhesive layer or the thermoset adhesive is brought into connection with the film via an adhesive layer, the adhesive layer applied as a surface layer to the film and composed of at least one hydroxyl and / or methoxy and / or N-methylol group C = IM- CH -OH) groups and / or C = N-CH ₂ -OR) group-containing compound and a binder.

The Holzujerkstoffe can be made using the duromer Adhesive according to the method according to the invention with the films on one or more surfaces or surface parts or according to one embodiment also as additional inner layer .C in this embodiment is a double-sided coating of the foils with the thermosetting adhesive required). the wood materials according to the invention coated with the film are used for a wide variety of wood-based products, wood-based

panels, components, building panels, etc., however, preferably for the production of furniture or furniture parts.

In the attached Figures 1 to 3 are execution Forms of the invention shown schematically.

FIG. 1 shows a section through one according to the invention coated wood material. In this figure, (1D) denotes a Halzwerkstaff, with (12) the thermosetting adhesive layer and with (14) the thermoplastic film on the Base of a polyolefin, which is on the surface layer and contains hydroxyl groups in the inner core or the inner or intermediate layers, where the wood-based material directly via the thermoset adhesive layer, so without the interposition of a Uerbundschicht from granular, fibrous or fabric-like Material is in contact with the film.

Figure 2 shows the thermoplastic film (14) based on a vinyl chloride homopolymer, which have little or no connection contains, the free hydroxyl and / or IM-methylol groups (= N-CH -OH) groups and / or (= IM-CH -OR) groups. The thermoset adhesive layer (12) or the thermoset adhesive protrudes an adhesive layer (11) in connection with the film.

The adhesive layer located as the surface layer on the film contains hydroxyl and N-methylol groups C (= l \ l-CH ₂ -DH) groups!] As well as a binder based on a vinyl chloride copolymer. 5

In Figure 3, the coated wood material is below Use of a composite bzu. Combination film shown schematically. The thermoplastic film is made of the layers (13) and (14), the layer (14) made of a polyolefin or of a Polyvinyl chloride, the layer (13) consists of the same or a different plastic.

Examples example 1

FaI manufacturing
From a mix van

80 Geu. parts Niederdruckpalyethylen (HDPE) density 0.96 g / cm, melt index (measured at 190 ^a C / kg van 2.1 g 1.0 g / 1D min) MFI 190 2.16 1.0 g / 10 min and 20 parts of cellulase powder particle size <50 μm and calendered a film with a thickness of 100 μm.

By Garana treatment, the surface tension the film increased from 28 to 72 dynes / cm. The slide had following properties:

- Shore D 61 hardness

- Resistance to noise

Uicat V / SP A 125 ° C

Bonding

1. LJF resin formulation: 100 Geuj.-parts powdered urine (duromer Adhesive-formaldehyde-Kanden-

substance) satian product

10 parts by weight hardener (acidic

Product + small amounts of a filler)

70 Geuj.-parts water vein

2. PVAC dispersions (as a comparative example)

5 The adhesive was applied to a thickness of 0.03 mm. The bonding to a 15 mm thick chipboard was carried out at a temperature of 100 C, a Time of 10 seconds and a pressure of 10 kp carried out.

Properties of the laminate

Bonding

PVAC dispersion of thermoset adhesive
(Urea resin)

- Penetration depth of a Vicat needle at 50 IM Exposure to 20 C, 1 h

- Peel test at temperature

0.6 mm

⁰ C

0.15 mm

Foil tears at "" ° '

- Surface
25 (subjective assessment) restless

smooth

Example 2 Case production

A kambifalia was made by coextrusion using a mixture of high density polyethylene (HDPE) according to Example 1 (for one layer) and a mixture of

80 mixed parts high-pressure polyethylene (HDPE) density 1G 0.96 g / cm ³ , Mfi 190 2.16 1.0 g / 10 min

and
20 parts of corn starch, particle size <30 ym (for the

other layer)

in a layer thickness ratio of 80 μιπ: 20 μπι (4: 1). The surface tension of the film was determined by corona treatment the back increased from 28 to 72 dynes / cm. The film had the following properties:

- Shore D '59 hardness
- Resistance to noise

Uicat USP A 128 ⁰ C

Adhesion

1. UF resin formulation (duramer adhesive) like Example 1 or

- Vf jr

2. PVAC dispersions (as a comparative example)

The adhesive was applied to a thickness of 0.03 mm. The bonding took place at room temperature.

Properties of the laminate

Bonding

PVAC dispersion of duramer adhesive
(Urine resin)

- penetration depth one

Vicat needle at 50 N.

Exposure to 20 C, 1 h

- Peel test at temperature

0.6 mm

D, 2 mm

C Foil tears at 140 ^° C

- Surface
(subjective assessment)

restless

smooth

Example 3 Foil production

A hard polyvinyl chloride case in the thickness of 100 μπι 25 was calendered with the usual additives. The foil had the following properties:

-JZ-

Hardness SharE D 76

üHeat resistance

Uicat USP A 8G ⁰ C

Bonding

The FoIiE was precoated with a 20% Solution (organic solvent based on ketone) from a vinyl chloride / vinyl acetate copolymer, (Uinylacetat-content 10 Gew.-96), K-üJert G 45, 20 Geu .-% Corn starch (based on the total mixture) with a particle size <10 μm (as an adhesion promoter)

Adhesion
15th

1. UF resin formulation (thermoset adhesive) uie Example 1 or

2. PVAC dispersions (as a comparison example)

The application was made. carried out according to Example 1.

Properties of the laminate

Bonding

PVAC-Dispersian duramer adhesive
(Urine resin)

PUC without return

side primer

- Penetration depth of a Uicat-I needle at 50 N Load 2G ° C, 1 h 0.71 mm

0.18 mm

- Peel test at temperature <100 C

Foil tears

at 100 C

- Surface

(subjective assessment) restless

example k

light structures

Foil production

according to the example

Bonding

The film has been pretreated with an adhesion promoter mixture. 20 parts by weight of the dissolved Capalymer according to Example 3 5 for the production of the adhesion promoter ■ Cellulose ether, consisting of methyl hydroxyethyl cellulase added and the bonding carried out according to Example 1.

1. UF resin formulation (thermosetting material) uie Bei-1G game 1 or

2. PVAC dispersions (as a comparison example)

Properties of the laminate

- Penetration depth of a Vicat IM needle at 50 IM load 20 ⁰ C ₁ 1 h

Bonding

PVAC dispersion of thermoset adhesive
(Urea resin)

PVC without back

side primer

0.71 mm

- Peel test at temperature <100 C

- surface (subjective assessment)

restless

0.29 mm

Foil tears

at 100

spawned structure

Example 5 Film production according to the example of adhesive bonding

A solution? From 16 parts of a copolymer Vinyl chloride and OH-containing acrylate (OH content 2% by weight) 33 Geu parts trifunctional were used for self-crosslinking aromatic isocyanate mixed in and an additional 15 parts Hexamethoxy-methylmelamine or a non-plasticized one Melamine resin added. (Adhesion promoter). .

The bonding was carried out according to the example

1. UF resin formulation (thermoset adhesive) uie ' example 1

2. PVAC dispersions (as a comparative example)

Properties of the laminate

Bonding

PUAC dispersion of thermoset adhesive

(Urea resin) PUC without primer

- penetration depth one
Wicat needle at 50 IM

Load 20 ° C, 1 h 0.71 mm 0.21 mm

- Peeling test at temperature * tears C1OO ⁰ C film

at 100 ⁰ C 15

- Surface

(subjective assessment) restless, light structures

Claims (1)

Claims 1. Coated wood-based material made from a composite consists of thermoplastic film, adhesive and wood material, characterized in that Mixing in wood and thermoplastic Foil, preferably made of or based on Polyethylene, polypropylene or polyvinyl chloride consists of a layer of a thermoset adhesive the basis of a formaldehyde condensation resin. , 2. Coated wood-based material according to claim 1, characterized characterized in that the thickness of the thermoplastic film is 0.05 to 0.5 mm, preferably 0.07 to 0.3 mm, amounts to. 3. Coated wood material according to claims 1 and 2, characterized in that the film or at least one surface or surface layer of the film contains reactive groups that are reactive with the thermoset adhesive. k. Coated wood-based material according to one or more of Claims 1 to 3, characterized in that the reactive groups of the foils are composed of hydroxy and / or methoxy and / or IM-methylol groups [C = IM-CH ₂ -OH) groups] and / or C = IM-CH -OR) groups stand. 5. Coated wood material according to any one of several of claims 1 to k, characterized in that the Vicat softening temperature - UST B of the film according to DIN 53460 kQ to. 1OD is ⁰ C and the indentation hardness of the film according to DIN 53456 is between 19.7 to 68.7 MPa Kp / cm ² . 6. Coated wood-based material according to one or more of Claims 1 to 5, characterized in that the thermoset adhesive is a formaldehyde condensation resin based on melamine-formaldehyde, urea-formaldehyde and is phenyl formaldehyde. 7. Coated woodworking material according to one or more of claims 1 to 6, characterized in that the thickness of the adhesive layer between 0.01 and 0.1 mm, preferably between 0.03 and 0.05 mm. 20th 8. Coated wood-based material according to one or more of claims 1 to 7, characterized in that the ball indentation hardness of the adhesive used (according to drying) according to DIIV 53456 between 2000 and 4000 Kp / cm ³ . : 9. Coated wood material according to one or more of claims 1 to 8, characterized in that the plastic films containing hydroxyl groups on at least one surface ader surface layer 5j made of cellulose, cellulose derivatives and / or starch-containing films auf.der Basis.eines Olefinhomo- and / or copolymers or vinyl chloride homopolymers, copolymers or graft polymers. 10. Coated wood-based material according to one or more of claims 1 to 9, characterized in that the on at least one surface or surface rail Methaxy and / or I \! - methylal groups C = N-CH-OH) and / or C = N-CH OR) groups / plastic films made of hexamethoxy-methylmelamine and / or non-plasticized melamine resin or consist of reaction products of these compounds. 11. Coated wood-based material after one or more of claims 1 .to 10, characterized in that the film is based on an olefin hamo- or copolymer on the surface layer and in the inner core or "the inner or intermediate layers Hydroxy and / or methaxy and / or C = IM-CH-OH) groups and / ader C = IM-CH -OR) groups that the Wood material directly over the thermoset adhesive layer -H- bar, as without the interposition of a binary composite layer made of grainy, fibrous vein similar to a shape Material is in connection with the film and that a component of the duramer adhesive, is preferably the hardener component, an acid or an acidic compound. 12. Coated wood-based material according to one or more of claims 1 to 10, characterized in that the thermoplastic film based on a vinyl chloride homo- and / or -copalymerisates contains no or only a small proportion of a compound which free, hydroxyl and / or IM-methylol groups (C = IM-CH “-OH) groups and / or C = IM-CH OR) groups that the thermoset adhesive layer or the thermoset Adhesive is connected to the film via an adhesive layer and acts as a surface layer the adhesive layer located on the film and composed of at least one hydroxyl and / or methoxy and / or 1M methylol group C = IM-CH -OH) groups and / or C = IM-CH-DR) groups Connection and a binding agent. 13. Process for the production of coated with plastic films Wood-based materials, characterized that existing on the basis of a thermoplastic Plastic film on at least one surface Surface layer such reactive groups or compounds contains reactive groups associated with the duramer adhesive or a component or a Component of the thermoset adhesive is reactive and that the plastic films are connected to the wood material by means of the thermosetting adhesive at temperatures below 110 ° C., preferably at temperatures up to 80 ° C., under pressure.
10 14. Process for the production of coated with plastic films Wood door materials according to Claim 13, characterized characterized in that the plastic film on at least one surface or surface layer hydroxyl and / or methoxy and / or C = IM-CH-OH) groups and / or C = IM-CH-OR) groups and / or compounds with these Contains groups and as a thermoset adhesive on two or more components adhesive is used. 15. A method for the production of wood materials coated with plastic films according to claims 13 and Ik, characterized in that a condensation resin based on an amine, amino or phenol-formaldehyde resin is used as the thermoset adhesive and the plastic films with the wood material by means of - D - preferably connected below 80 C, under pressure application uerden thermosetting adhesive at a temperature below 110 ⁰ C. 16. V / experienced for the production of coated with plastic foils Wood-based materials according to one or more of Claims 13 to 15, characterized in that a formaldehyde condensation resin is used as the duromer adhesive based on melamine-formaldehyde, urea-formaldehyde or phenol-formaldehyde resin is used will. 17. l / experienced in the manufacture of plastic films coated Wood materials according to one or more of claims 13 to 16, characterized in that at least one component of the thermoset adhesive a water-soluble hardener is that the hardener and the other (s) reacting to the condensation resin KompanenteCn) each separately on the plastic film or the wood-based material is applied and then the plastic film with the wood-based material be united under pressure. 1B. l / experienced in the manufacture of plastic films coated Wood-based materials according to one or more of claims 13 to 17, characterized in that those on at least one surface or surface layer Plastic films containing hydroxyl groups and / or compounds with hydroxyl groups Cellulose, cellulose derivatives and / or starch-containing films based on an olefin homo- and / or copolymers or vinyl chloride homo-, -co- or -pfropfpolymerisat exist. 19. Process for the production of coated with plastic films Wood-based materials according to one or more of claims 13 to 18, characterized in that the methoxy and / or I \ l-methylol groups C = N-CH-OH) on at least one surface or surface layer and / or plastic films containing C = N-CH-OR) groups consist of hexamethaxy methyl melamine and / or non-plasticized melamine resin. 20. Process for the production of coated with plastic films Wooden materials according to one or more of claims 13 to 19, characterized in that the films to improve the reactivity on the Surface or surface layer containing hydroxyl and / or methoxy groups and / or C = N-CH-OH) groups and / or C = N-CH -OR) groups before gluing one Corona treatment and / or exposure to high energy Exposed to rays. -B- 21. A method for the production of half-timbered tools coated with plastics according to any one of several of claims 13 to 2D _1, characterized in that the plastic films with the use of the duramer adhesive in a RallenheiBkaschieranlage or in a press at a temperature between kO and ο ₀ 110 C, preferably 5D to 80 C, under pressure with be connected to the wood-based material. 22. A method for producing van with plastic coated Halzuierkstaffen according to one of several of claims 13 to 21, characterized in that the plastic films with the use of the duramer adhesive in a roll lamination system at temperatures of 5 to kO C, preferably 10 to 35 .C, below Pressure to be connected to the wood-based material. 23. Uerfahren for the production of coated with plastic films Wood-based materials according to one or more of Claims 13 to 22, characterized in that the film based on an olefin homo- or copolymer on the surface layer and in the inner core or the inner or intermediate layers Hydroxy and / or methoxy and / or C = N-CH-DH) groups and / or C = N-CH -0R) groups so that the wood-based material is un- indirectly, as without the addition of a composite layer from granular, fibrous or geujebe-like Material is glued to the film, one component of the thermoset adhesive being preferred the hardener component is an acid or an acidic compound. Zk. Process for the production of wood materials coated with plastic films according to one or more of Claims 13 to 22, characterized in that the thermoplastic film based on a vinyl chloride homo- and / or copolymer contains no or only a small proportion of a compound which is free hydroxyl - and / or i \ l-methylol groups C = N-CH-OH) and / or C = IM-CH-OR) groups that the thermoset adhesive layer or the thermoset adhesive is brought into connection with the film via an adhesive layer , ¹ uiobei the adhesive layer applied as a surface layer to the film of at least one hydroxyl and / or methaxy and / or 1 M methylol group containing C = 1 M - CH - OH) groups and / or C = N - CH - OR) groups Compound and a binding agent.