DE2234020C2 - - Google Patents

Description

3 4

the use of a (^ polymerisates reit Acryl- 03 Oewichtstefle N-Metbyläthanolainmonium-

elwebmyl ester as acrylic acid ester. acetal (latent hardener)

An advantageous embodiment of the load-bearing 20 parts by weight of polymer dispersion,

according to the method is that in the Gesüßwiebsprozentig, composition of the

mixed a copolymer is used in which the 5 copolymer: 60 parts by weight of Vniyi-

Ratio of acrylic acid butyl acrylate to vinyl chloride, 40 parts by weight of butyl acrylate

rid 30 to 45: 55 to 70 percent by weight is 0.1 part by weight of wetting agent

The adhesive layer is expediently in an amount

from 20 to 50 g Leira dry substance per m * up- One is dried and condensed at 140 ° C until the

brings to the foil a content of volatile constituents of

The method can be used for resin-coated 53 percent by weight. The surface carrier sheets made of paper, which are already coated with a weight of the primer film is 155 g / ra «, corresponding decor and then with a corresponding dry weight of 146 g / m * , which can be coated on clear varnish, as well as for bleached wear on dry Leünbarz thus about 23 g / m *. The or unbleached, filled or unfilled and with t $ s-inergestellie primer film is resinated with "A" aminoplast resins, which net

after the synthetic resin has been glued on and hardened.

be coated with a pigmented coating. made with the addition of polymer

It was surprising for the person skilled in the art that there is no dispersion in the glue resin. This rule, due to the limited addition of the defined mixed film, is denoted by "B", polymerizate the pressure is still low. Both primer films can be held against aluminum boundaries, and it was furthermore, at 145 ° C. under a pressure of 5 kgf / cm ^{8, it was} impossible to foresee that the copolymers held in the adhesive layer for 40 seconds pressed on wood chipboard would deform the strength of the adhesive and when hot.

do not affect the joint negatively. The results obtained 15 The adhesion of the primer films is after a

Adhesions are against water and the usual methods used in the furniture industry.

solvent and resistant to temperature influences by using ώζ the tempered plate surface with

dig. use a sharp cutting device to cut crosswise

In practice, production takes place appropriately and the film is lifted off at the interfaces

So that one tries the carrier webs with the 30 first.

Solution of the curable synthetic resin soaks and the glued-on film "B" can be lifted off without

the concentration of the impregnating resin and the type of wood chips that adhere to a significant extent;

The impregnation is chosen in such a way that the desired resistance is achieved. The adhesion is therefore inadequate. Slide »A« on the other hand

allocation ratio. The behi-yten carrier webs can only be used together with adhering wood

NEN will now focus on a content of volatile chips; the adhesion to the wood-based material is

components of less than 30 percent by weight dried. Well.

The dispersion of the adhesive is then applied, even after the coated wooden switch has been varnished, about 50 percent by weight of the adhesive composite panels with a commercially available, pigmented contains, applied on the reverse. The polyester varnish treated in this way has unchanged good adhesion Delte carrier web is based on a content of volatile 40 film "A".

Components from about 5 to 6% dried and removed. Film "B" only shows good adhesion when

neither cut to size nor rolled up. The pressure when gluing the film from 5 to min-

Use of a special release film is not required to increase at ^{least 10 kg / cm 2.}

The method according to the invention is illustrated with reference to 45 B e i s ρ i e 1 2 the following examples explained in more detail:

_n . ·, «An absorbent, printed with a wood decor

Example 1 Fine cellulose paper, which has a basis weight of 100

A bleached, absorbent kraft paper having a g / m ² and an ash content of 15 having ° / o, 50 as presoaked basis weight of 80 g / m ² and an ash content in Example 1, a urea resin and 20 percent by weight is dried using a commercially available . The pre-impregnation weight is 190 g / m ² , aqueous, 50 percent by weight urea; the volatile content is 20 resin solution, the 0.1 percent by weight ammonium percent by weight. The pre-impregnated paper web is added with chloride as a hardener, pre-impregnated with the same glue resins as in Example 1 and dried at 140 ° C. and the resin is further coated and dried. The final weight condenses until the pre-impregnated paper web is 185 g / m ² , the content of volatile constituents a content of volatile constituents of about 15 liters of 5.2 percent by weight.

Has weight percent. The weight per unit area is 145 g / m ² , the weight after deduction of the volatile chrome-plated brass sheets at 130 ° C. with a certain constituents (dry weight) thus 133 g / m ² . 60 pressure of 5 kp / cm ² for 80 seconds on hard

Then the pre-soaked paper web is pressed with fiber plates and removed from the mold while hot. Subsequently

a glue resin of the following composition, the tempered surfaces are coated with a poly

tig coated: ester clear lacquer lacquered.

As in example 1, the decorative film, the polyvi-

40 parts by weight of urea resin solution, 65 nyl chloride butyl acrylate in the glue resin, a good one

50 percent by weight, water-based adhesion to the wood-based material, while the decorative film

40 parts by weight of melamine resin solution, without copolymers only when pressing

SO weight percent, aqueous half 10 kp / cm ² has good adhesion.

Claims (5)

2 254 020 J, . * «« Henwetrfintoe TrSgerbalroen on the wood · ARS inddas received compressed material Toggle \ u claims: SaBKS StSwITuck provides USAGE ^ trow " . I. Process for the production of with 25 to jJjBfJ »! ^ ArrptettieineTsich C K 100 percent by weight (contained on paper ^vessels J ^ _te f \ Χ * ΧΙ B. a urea resin, so ^Λ iht) Aiolastharzen loaded Trlgerbah- J ^ JJyirt carrier sheet on this 100 weight percent of aminoplast resins (Bergen on Papierge J ^ _te f \ ΧΧΙ as a Hamstoffharzleira, so weight) loaded Trlgerbah- J ^ JJyirt Tragerbahn this NEN of paper and a back adhesive mu f * * ⁸ jki the relatively low pressure of 3 It is not possible to press open the surface of the wooden ^ Ä ». The printing devices are made of material plates, thus marked up to "rag" * £ * £ pressure are in greater character, that as KJebßcbicht the dispersion »^ JfS ^ S ^ a mixture of 60 to 90 weight percen ™ * Z * £ $ mn Leimscbicht as an aqueous LOE Aminoplastbarz and 10 to 40 weight percent USAGE ^ö «« to ^. ^ ^ i ^ imharae, a Copolyraerisates from an acrylic acid- «! ^« Ä ^^ Sidle. it is applied for uniform application acetate and vinyl chloride, and then overall however J ₂ ⁿ j3 _nI 5 _NACM ä _t onto the surface dries is. »* <F Hni ™ er material plate special application device 2. Method * according to claim 1, characterized in that the ^ho ^^ 2 \ un denotes a uniform application that this should be used as an adhesive tape in order to create a »-5 further brought mixture of 70 to 80 weight percent on «^" Using an aqueous glue or aminoplast resin and 20 to 30 Gewjchtsprozent Be. ^d "^" adhesive occurs the disadvantage of the copolymer consists of ²⁰ , ¹ ^ rh «water on the surface of the wood 3 Vfh h Aruch 1 or 2 thereby » ^rf f ^ X ^ Hlä d dl 3. The method according to claim 1 or 2, characterized in that the water to u «« _. ^. W ~ --_ characterized in that the copolymer of the composite panel located fibers, wood chips or the like. Mixture as acrylic acid ester butyl acrylate brings to swelling, so that the achieved, remunerated Contains ester. The surface is not evenly smooth, but rather uneven 4. The method according to claim 1 to 3, characterized as or, as the person skilled in the art says, is restless. A wide marked, that in the mixture a coor disadvantage can consist in the fact that the glue or lymerisat is used, in which the ratio is the glue resin during the pressing by the bevon Acrylic acid butyl ester to vinyl chloride 30 penetrates through resinous carrier sheet and causes malfunctions 45: 55 to 70 percent by weight. in the surface of the tempered wood-based panel 5. The method according to claims 1 to 4, there- fore 30 and for bonding the carrier web during pressing characterized in that the adhesive layer leads in sen with the press plate. An amount of 20 to 50 g of dry matter per. There has therefore also been no lack of attempts m ^{2 is} applied. to avoid special application devices, the resin-coated carrier webs on the back directly with it 35 to be provided with a layer of glue. For example, the resin-coated carrier web has been coated on the back with aminoplast resin. That has The invention relates to a method for the production but again the disadvantage that the necessary Development of 25 to 100 percent by weight (based on the pressing pressures increase. On the other hand, there is also sales Paper weight) Amino resins resinated 40 bonds with dispersions of polyvinyl derivatives Carrier webs made of paper and carried out with a back, but which in turn have the disadvantage Adhesive layer for the surface treatment of the glue joints, especially in the case of hot demolding Wood-based panels are used. of the pressed material, have insufficient strength and When tempering wood-based panels with are not resistant to numerous organic Lo-carrier webs, in particular made of paper, which is hardening 45 and against moisture, containing synthetic resin and on the surface of the invention is therefore the task of from wood-based panels at curing temperatures, relatively weakly with aminoplastic resins can be pressed on, you can use different resinous carrier webs with an adhesive layer to verse process serve. which flawless gluing of the carrier In one method, impregnated and coated 50 web after the curing of the resin with the HoIzman the paper web using such amounts of härtba- material underground ensures, on the other hand, REM resin (about 120 to. 150 ⁰ / o resin based low during pressing the application Press on paper), which are sufficient that on the one hand a pressure, ie pressure of about 3 to connection with the substrate by the synthetic kp / cm ² . allows. Resin achieved and on the other hand a closed 55 surprisingly succeeds in the initially synthetic resin surface is formed. For this purpose, it is necessary to use the above-mentioned method for producing with amino, relatively high pressures, for example pressures of 18 resin-coated carrier webs according to the invention up to 20 kp / cm ^a . Presses to produce that, as an adhesive layer, the dispersion of a high pressure are available to processors, e.g. B. Furniture mixes of 60 to 90 percent by weight amino manufacturers are not always available. 60 plastic resin and 10 to 40 percent by weight of a copolymer Another method consists in that the lymerisates from an acrylic acid ester and vinyl carrier web made of paper with a lower resin content, chloride is applied and then dried. z. B. 25 to 100 percent by weight resin, based on a preferred embodiment is thereby ge paper weight, resinous. These amounts of resin are sufficient indicates that the applied as an adhesive layer but no longer sufficient to produce a mixture of 70 to 80 percent by weight aminoplast bond during compression with the surface of the wood-based panel to be resinous and 20 to 30 percent by weight of the aforementioned and a closed resin surface consists of copolymers to form. It is therefore necessary that the mixture has particularly proven itself