DE2344359A1 - Metallised and patinated filled polyester structured panels - obtd by casting on thin plastics film laminated onto chipboard base - Google Patents

Abstract

Metallised and patinated structured panels of filled polyester are obtd. by casting onto thin plastics film which is applied onto chipboard or hardboard sheets and undergoes spontaneous deformation to assume a structured configuration when coated with a solvent-contg., low-viscous, fast-drying, methacrylic lacquer which is filled with metal powder, so as to give a metallic primary coating. Prods. are useful for the mfr. of wall components, claddings, door linings, panels.

Description

-1- Ewald Jansen

Metallic tinted and satined cast plates made of enriched polyester

The invention "relates to a method according to which polyester is made with quartz powder is enriched, made metallic tinted and patinated cast plates will. They are primarily used as walls or cladding however, as a cover for pets.

As is well known, Pülluneen for house doors are made in silicone Kantschuk molds Made of enriched polyester, the surface of which is plastically decorated or structured, retail-tinted and patinated.

Imitations of hatis door panels e-cast from aluminum or artfully crafted from real copper sheets. I'm an imitation from polyester, molds made from silicone rubber are mainly used used, cast from appropriately trained models became.

In general, a First coat of polyester painted on, the one with metal tralver is enriched.

After this initial coating has been annealed, it becomes formation the panel wall thickness - enriched with heavy or light! fillers Cast polyester and bond with the first metallic coating.

After the cast plates have been heard and removed from the mold, it becomes metallic coated surface sanded with a pigmented patina stripped off and then with a clear finish - against the effects of the weather - coated.

The models and shapes that are necessary for this procedure are not only costly, but also with a short lifespan.

Considerable working hours are expended in the production of such cast plates.

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According to the inventive method - different from the known Front door panels made of polyester, which is enriched with rock quartz powder is to be produced without the use of textured formliners or structured molded bases. The polyester is made on primitive forms or poured onto molded floors made of chipboard and wooden strips, the according to the invention with thin films made of thermoplastics (0.025 - 0.050 mm thick) are occupied.

Deviating from the known process - according to which the Srstbeschichten be made with metal powder-enriched polyester - it will Metal powder with a special low-viscosity solvent-based Liquid plastic ready-to-use.

Deviating from the usual applications, even the metr.11-coated Surfaces - after perforation - sanded with patina pastes polish off and then sprayed with a finish, Another smock was found for this, too, after which it is patinated and finished at the same time.

The process of making metallic tinted and patinated Door panels and structural panels are made from enriched polyester Object of the invention. It is solved according to the invention as follows:

If - according to the invention - a thin thermoplastic film (0.025 - 0.050 mm) with a special low-viscosity solvent-based Coated methacrylic resin varnish, which, for example, is heavily enriched with copper powder the film curls and forms a wild structure. If - according to the invention - the metal layer is coated with polyester after it has dried quickly, the latter runs off the tips of the structure in their depressions and accumulates there.

This stiffens the film.

If you pour on it - after the polyester has gelled - e.g. a • 10 mm high layer of polyester, which is enriched with quartz dial, a 10 mm thick hardboard is obtained after the polyester has cured. When turned, you can simply throw the foil off.

The surfaces are dry and show the unadulterated copper tint of the applied copper powder.

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Would - as was established - the foil with metal powder. " If coated with solid polyester, the film is the The surface is sticky and the real copper tone is badly affected.

Target - z ^ emäß the inventive arrangement - the metallic PJrstbeschichtung be recoated with a clear polyester, this serves NachbeSC ¹ I ichtung not only for reinforcement of the structured film, but also as an adhesive for the molded thereon polyester concrete. The first metallic coating produced with the methacrylic resin paint will otherwise not bond properly with the polyester concrete.

After the hardening of a plate produced in this way, the metallic one is tinted structured visible side with solvent-based methacrylic resin varnish sprayed all over. The solvent-based methacrylic resin varnish is colored black or sriin .. After this has dried, it is with a ball of textile - soaked with the heavily diluted clear methacrylic resin - the structured surface is polished down to the metal coating is restored to the raised areas of the structures comes to light.

I) he kethacrylhn.rzlack, which dries out without the use of hardeners, has the property that it is dissolved again by its solvent and can be polished.

The metallic tinted surface is not only patinated with this application, but also with a protective layer against corrosion Mistake.

To further develop the invention, the automatic structure formation of the film can be influenced according to the invention as follows. On the mold bases (chipboard) - completely or only partially coated or coated with clear polyester - the films are placed and pressed against the coated areas stick together.

If the foils are coated with the Met * 1! Enriched Wethactrlberzl ank, so it shows - as far as it was glued from below that the foil sieve deformed fine grained, while the intervening Surfaces are structured with rough edges.

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23U359

With the two under-lying deformations of the film you can the film and the surfaces of the cast slats are different to be patterned.

The following is the production of a 10 mm thick front door panel described.

On horizontally aligned work trestles, a corresponding large 20 mm thick Feelegt chipboard.

On it is a 4 now strong wood fiber board - shiny side after above and fluted side avenge below - learned and instigated.

With a brush, black polyester is painted on the fibreboard. 0.025 - Ο, Π ^ Ο vm thick foils are applied to a roll. A layer .this films \ tira rolled onto the freshly coated fiberboard Tind pressed fent. The film sticks to the fibreboard from below.

On the edge of the chipboard are now - covering the film with 10 now with strong form delimitation strips made of hard plastic pinned on. The form-heating strips made of hard plastic determine the circumference and the wall thickness of the cast plates.

The one exposed between the moldings or border strips Foil is made with the metal-enriched Wethjcerylharzlaek Coated vigorously.

The coating dries within 15-30 minutes. The film is curled up.

As far as the film on the inside with the mold base (wood fiber board) Ate polyester coating is glued, it cannot linger so much (gluing) and is thus deformed into a finer structure.

The entire surface is coated with clear polyester. He runs from * the raised surfaces of the structure in their depressions a.b ·.

The structure is so stiffened by the gelation of the polyester, that ele no longer changes when the with Quartz rake-enriched polyester at the level of the shape edge strips (shape delimitation lines) is poured.

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the moistening of the enriched polyester becomes one thin plasticf oil is laid.

Barauf is gelefrfc a 20 rm thick chipboard, which is clamped to the mold bottom,

Bas Gan?, E is turned and cleared. Animal, • rags overhead " The testicle is lifted off.

In spite of the sticking of the film to the bottom of the mold, it remains the foil adhere to the greens board.

The foil is removed in front of the Oußplatte?: Open.

It turns out that the structured surface of the greenspicket with is covered with a highly applied and real-looking metal layer.

Kit the difference in foIienverfonnung - generated by the setting instructions Gluing to the Fornt floor - the large areas can be plastic «" -Patterned or divided confused.

After the hardening of the Gußulatten, the entire surface is with sprinkled with the black or teal-colored methacrylic resin; and immediately afterwards with a ball of textile - soaked with deir · solvent the paint or the paint thinned with it _ ao abr »oliert, except for the raised areas of the structure, the metal coating tion reappears.

This not only creates a patina on the metallic surfaces, but at the same time a corrosion-resistant layer is created.

A further development of the invention includes that the surfaces of the Cast slats (w. B. Tiirfül luneen) - both with raised protruding Fields in Käsettenfor ™, as well as all-orisch for leih «^ are examined can - if - a foreign invention - from the 4 m "thick wood aser panels by means of "nelmniprsäoien fields or figures cut out werian.

The cut-out fiber batts are pinned to the wooden nantes, coated with polyester or other glue.

• t

The plastic film is rolled up over it.

The shape edge strips (shape limit strips) are - as already described - donated. The film is firmly coated on the adhesive Surfaces pressed on. Bann is coated - as already described.

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The coated film is enriched with the heavyweight isen When polyester is poured, it is pressed into the - from the fibreboard AusijeBchnitten - recesses and causes on the finished Guo-plates, large-structured door-hunts emerge, between which around. 4 ^ m deepened (fiber plates ^ tärke) -, the finely grained surfaces lie.

Invention, one can also generate the fields that are struggling in this way, if strips made of fiberboard are pinned onto the mold bases (wooden slats) which divide the flutes into a chain shape.

Advantages of the invention;

1. Saving of expensive models and molds

2. easy demoulding

y. high-gloss metallic surfaces - due to the use of the mineral water-based acrylic resin varnish - which is fresc ^ oned on the repeatedly renewed shiny plastic foils),

4 · the simultaneous creation of a patina and a corrosion-resistant one Top layer.

5 · Prevention of curvatures due to premature demolding, the is only made possible by the use of the plastic film.

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Claims (8)

• τ Claims ; Process for the production of metal coated and patinated parts Structure panels made of enriched polyester - not like conventional ones on structured matrices or structured mold bases - but rather cast on thin films made of thermoplastics are laid on primitive molded floors made of chipboard and hardboard and automatically deform in a structured manner, if you are using a solution containing low viscosity, quick-drying methaeryl resin varnish to be coated Creation of a metallic initial coating - with metal powder enriches - serves. 2. according to claim 1, characterized in that the metallic First inspection is coated with clear polyester, whereby the still unstably deformed film is solidified so that the Structure can no longer change if the heavyweight - ■ · ■ < term polyester enriched with quartz powder is poured on. 3. according to claim 2, characterized in that the structure bilftuner the film wanders or is influenced by throwing if it is affected by the underside is wholly or partially glued to the bottom of the mold. '· 4 · according to claim 3, characterized in «^, Saß all mold bottoms the Wood slats and hardboard panels that can be produced cheaply can be used, on which the plastic foils - either completely or in places - can be glued with polyester. 5 · according to claim 4 «t characterized in that wood-hard fiber battens A mm thick are donated to the chipboard. Means scrollsaws figurative recesses are cut therein and the precoated Foliefa a press when they are watered with the heavy overweight is enriched polyester. As a result, figuratively 4 mm thick structured elevations are formed on the surfaces of the structured cast plates. 509815/1032 6. according to claim 5 ·, characterized in that on the chipboard 4 ^ strong strips are pinned, between which the yor-coated foils are pressed one-pressed when they are poured with the heavy weight polyester pulp. \ j This leads to the structured cast sheets correspondingly increased structured fields or depressions which correspond to the width and depth according to the aufgestifteten strips. 7 · according to claim 6, characterized in that the surfaces the cut-out fibreboard on the surfaces of the strips are coated with polyester and thereby the over them Rolled film is glued to the surfaces of the painted areas and a refined structure is created there. 8. according to claim f .; Process for creating a patina on the ·; Structured and metallic tinted surfaces of the cast polyester plates, characterized in that the entire surface is sprayed or coated with a pigmented, solvent-based methacrylic resin lacquer and then impregnated with a ball of textile with the solvents of the lacquer - is polished off until the metal becomes visible again, except for the tips of the structures . Practice shows that the special solvent holds Methaorylhawl aok with pure, rapidly evaporating solvents lets dissolve and polish again and thus not just a patina, but also a corrosion-resistant coating can be produced. 509815/1032