Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1990-02-22
1994-02-15
Lusignan, Michael
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
156281, 156310, 427258, 4274121, 428201, 428507, 4285422, B32B 300, B32B 2714
Patent
active
052865479
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a method of manufacturing a protective and/or decorative surfacing material adapted to be applied to any surface of an object, e.g. an element of furniture.
This invention relates also to a protective and/or decorative surfacing material manufactured by said method.
In recent times many attempts have been made to use synthetic materials in various forms to provide either decorative or protective coatings to various articles, such as articles of furniture for private or professional use.
Synthetic polymer materials have been commercially available in sheet form for approximately 40 years. These sheets are available in a variety of sizes and thicknesses and as well in a variety of forms and aspects. They may be sometimes transparent or translucent and sometimes colored. Such products are available from a number of manufacturers and are marketed under different names. "Hesalite" as manufactured by Bally CTU in Switzerland is a typical example, as well as transparent sheets marketed under the name "Plexiglas" and manufactured by Rohm GmbH in Switzerland too. Such products can be used to form decorative and/or protective surfaces either alone or in combination with other similar or different products.
The use of synthetic polymer sheeting to form protective and/or decorative surfaces or coatings has not been extensive in the past. Such coatings have not been found particularly effective in the practice for surface protection and there has therefore been only limited use of this product in this field.
Recently a number of manufacturers of synthetic polymers have introduced acylic sheeting with an additional abrasion resistant surface added to the material. The product marketed under the name "Plexiglas XT 230" and manufactured by Rohm GmbH in Germany is a typical example.
Synthetic surfacing materials which are supposed to offer both protection and coloration have been known for a number of years and comprise high pressure synthetic laminates, such as "Formica" and "Arborite" currently marketed world-wide. Additionally a product manufactured and marketed in the U.S.A. under the name of "Vitricor" comprises a sheet of transparent acrylic material, the back surface of which is covered by a layer of acrylic paint. Such materials are used generally in the form of plane sheets or plates. A process for manufacturing such a product is described in U.S. Pat. No. 4,293,603.
In spite of a variety of products existing nowadays, none of them has brought a satisfying answer to the problem of providing a surface coating which is both protective and decorative. None of these materials has been effective in producing both a decorative coating with a desirable apparent depth of colour which would provide sufficient protection to surfaces and which could be adapted to every shape of surface, and specifically to relatively small radius curved edges or 90 degree return edges. The known materials do not have both basic properties of (i) resistance to abrasion, and (ii) capability of conformation to all surfaces of whatever shape.
The prior art has made use of acrylic enamels or lacquers to colour coat the base plates on the assumption that these coatings would be compatible with and also would bond to said plates. It has not come up to these expectations and the manufacturers have encountered serious problem of adhesiveness, the colour coat tending to separate from the base plate.
In an attempt for solving this problem, the prior art has made use of a primer paint applied to the back of the colour layer to improve the bond between this layer and the material of the base plate. However all adhesion problems have not been solved for all that.
Finally the prior art materials were restricted in use as large flat sheets adapted to form coatings on planar surfaces or curved surfaces having a large curvature radius.
The prior art while offering materials with different hardness grades was restricted to use as flat or large radius curved ,coatings by the fact that the plates or sheets are not successfully th
REFERENCES:
patent: 3949044 (1976-04-01), Varini
patent: 4126594 (1978-11-01), Peters et al.
patent: 4293603 (1981-10-01), Hayman-Chaffey et al.
patent: 4400423 (1983-08-01), Scher et al.
patent: 4430375 (1984-02-01), Scher et al.
patent: 5021278 (1991-06-01), Short
Derwent Abstract N85-236092.
Actino S.A.
Lusignan Michael
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