Decorative patterned laminates prodn. - by transfer printing process in which the resins in the transfer sheet are compatible with the melamine resin used for impregnating the laminate

摘要

Decorative laminates (I) are produced by (1) making a transfer printing sheet contg. (a) a substrate film contg. a synthetic resin, (b) opt. a release layer contg. a mixt. of acrylic resin and melamine resin, formed on the substrate, (c) a patterned layer formed on (a) (or b) and (d) an adhesive layer contg. a mixt. of butylaldehyde resin (BA) and melamine resin (MF), formed on layer (c), (2) applying this sheet to a paper base sheet, (3) hot-pressing the two sheets, (4) stripping the substrate film from the transfer sheet and so transferring the pattern layer to the base sheet, (5) impregnating the base sheet with a heat-curable resin contg. a melamine resin and (6) hot-pressing to cure the resin. USE/ADVANTAGE - (I) is used for interior decoration (wall and floor covering materials, etc.), furniture, kitchen fitments, etc. The process enables the prodn. of high quality resin-impregnated laminate in which the pattern layer, adhesive layer and base sheet are strongly bonded with a heat curable resin; the above combination of resins enables uniform penetration of the various layers by the impregnating resin and practically eliminates blistering and/or delamination when the prod. is exposed to heat from hot kitchenware, etc.