초록 ▼

During the essentially continuous process for producing a polymer plastic, especially a foil or thin sheet (38) containing polymethyl methacrylate, a highly-viscous polymer plastic is first applied to a flat carrier inside a separating layer, whereby regions of the support surface remain free, in th

During the essentially continuous process for producing a polymer plastic, especially a foil or thin sheet (38) containing polymethyl methacrylate, a highly-viscous polymer plastic is first applied to a flat carrier inside a separating layer, whereby regions of the support surface remain free, in the manner of a surface pattern. Next a low-viscosity polymerizable monomer and/or pre-polymer (30) are cast on to this separating layer in such a way that it forms, over the separating layer, a liquid layer, onto which is applied a flat, thread-like support material (32), which may advantageously have a decorative surface and into which the support material (32) is then embedded or impressed. Next after the possible application of further layers consisting of high and/or low-viscosity plastic, especially inside a second separating layer, the thus produced material coating is transferred to the foil (38) or thin sheet, accompanied by polymerization of the plastics contained therein. In this process, the separating layers prevent the support material from coming close to the surfaces of the sheet (38) to be produced, since the highly-viscous plastic contained in the separating layers does not penetrate the porous support material.

대표청구항 ▼

Process for the continuous production of a decorative foil (38) containing a polymer plastic, in which at least one flat, porous and fibrous carrier is used, and which comprises a transparent protective layer of a polymer plastic on a decorative surface of the foil protecting a decorative layer at l

Process for the continuous production of a decorative foil (38) containing a polymer plastic, in which at least one flat, porous and fibrous carrier is used, and which comprises a transparent protective layer of a polymer plastic on a decorative surface of the foil protecting a decorative layer at least at one of its surfaces, characterized by that a highly viscous polymer plastic on the basis of prepolymerizate of monomethyl methacrylate with a viscosity higher than 10,000 mPa.s is applied to a flat moving support to form a first separating layer, by that to this layer of highly viscous polymer plastic a low-viscosity liquid (30) consisting of at least one of the members of the group consisting of polymerizable monomer and pre-polymer each on the basis of monomethyl methacrylate with a viscosity of less than 100 mPa.s is applied, which will fill any still free regions in said first separating layer and form over it a liquid layer (31), by the porous carrier material (32) which has a decorative surface is then applied onto this liquid layer (31), whereby it is dipped into said liquid layer, by that eventually thereupon a highly-viscous plastic on the basis of prepolymerizate of monomethyl methacrylate with a viscosity higher than 10,000 mPa.s is applied to form a second separating layer, and by that the thusly produced compound material (35) is transformed into the decorative foil under polymerization of the plastics contained in the said compound material, wherein one of the separating layers forms the transparent protective layer.