PURPOSE: To enable adhesion to a plasticized polyvinyl chloride surface by comprising at least a polymeric film, or a polyurethane polymeric film, adhered to the surface with a pressure-sensitive adhesive consisting essentially of at least one nitrile butadiene rubber.
CONSTITUTION: NBR include both hydrogenated and non-hydrogenated rubbers in solid or liquid form and with varying acrylonitrile content, e.g. from about 10 to about 45 wt.%. Adhesives should generally be applied at dry coating weights of from about 20 to about 50 g/m2 to provide suitable adhesion to a vinyl surface. The outer layer of the novel composite, i.e., that designed to provide the decorative graphics to the composite can be basically any polymeric film forming material compatible with the adhesive. Where the polymeric film consists of a single layer, the thickness is preferably between about 50 and 150 μ. Where the film is of two layers, such as the aliphatic polyurethane followed by the polyester polyurethane, the thickness of the aliphatic polyurethane is from about 3 to about 50 μ, preferably from about 5 to 10 μm.
NAIMURU KARIMU
GEORUGU HANSU FUAIKUTOMAIYAA
HAINAA YOHANSEN
| JPS54116577U | 1979-08-15 |
| US2783166A | 1957-02-26 |