Flexible plastic sheet material

摘要

914,499. Coated fabric; laminates. DU PONT DE NEMOURS & CO., E. I. Oct. 13, 1960 [Nov. 12, 1959], No. 35068/60. Class 140. A flexible plastic sheet material comprises a substantially opaque layer and integrally bonded thereto a translucent coloured layer, said translucent layer consisting essentially of an organic film-forming material. 2 to 25% by weight of pearl essence, and a total of 0.5 to.15% by weight of one or more of the following lowhiding light-fast coloured pigments: quinacridone, substituted quinacridone, flavanthrone, dibromoanthanthrone, polychloro - anthraquinone, 2,1(N)-benzacridone, tri- and tetra-bromo pyranthrone, perylene, dibromopyranthrone, anthrimide, dimethoxy dibenzene anthanthrone, the alumina hydrate lakes of said pigments, copper phthalocyanine, and polychloro copper phthalocyanine, said percentages being based on the total dry weight of said translucent layer. The opaque layer which may be formed as a coating on a knitted cotton sheet, may consist essentially of an organic film-forming material and a high-hiding light-fast coloured pigment. The colour of the opaque layer may be of greater brilliance than the colour of the low-hiding pigment. The colour of the low-hiding pigment may be of greater saturation than the colour of the opaque layer. The pearl essence may be the natural type and the colour of both the opaque layer and the low-hiding pigment are of high saturation whereby the finish of the sheet material is characterized by a colour of high saturation and a non-milky opalescence. The pearl essence may be a synthetic type and the colour of both the opaque layer and the lowhiding pigment are of high brilliance whereby the finish of the sheet material is characterized by a colour of high brilliance and a milky opalescence. The surface of the sheet material may be grooved or embossed before or after the translucent layer is applied, e.g. only in the valleys of the embossed pattern. The filmformer of both the opaque and. the translucent layers may be a nitrocellulose resin, polyvinyl chloride, or a copolymer of vinyl chloride with an ethylenically unsaturated monomer copolymerizable therewith, e.g. vinyl acetate, or vinylidene chloride. Film-forming materials for use in the translucent layer include drying oils, oil-modified alkyd resins, oleoresinous varnishes, elastomers, natural resins and thermoplastic and thermosetting synthetic resins. Examples of natural and synthetic pearl essence are given. The translucent material may be applied by a coating method, e.g. rolling, printing or spraying, or by laminating a preformed film of translucent material to a film of opaque layer, e.g. by hot pressing. A layer of clear adhesive may be present between the layers, and a further clear protective coating may be applied over the translucent layer. Specifications 810,005, 828,051, 828,052 and 851,976 are referred to.