PROTECTIVE ADHESIVE FILMS

摘要

The invention includes a multilayer film having at least 2 layers : (A) a n adhesive layer comprising at least 40 weight percent of an ethylene/alkyl acrylate copolymer having a Vicat point (ASTM D 1525) of no more than 40 cen tigrade (OC), at least 1 and at most 10 weight percent of an ethylene/alpha, beta-ethylenically unsaturated carboxylic acid copolymer, and at least 20 w eight percent of a low density polyethylene, and 0 to at most 7 weight perce nt filler, hereinafter referred to as composition A; and (C) a barrier layer comprising at least 90 weight percent high density polyethylene, hereinafte r referred to as composition C, in each layer, the percentages being based u pon combined weight of polymers and filler and selected to total 100 percent by weight. Preferably the film further comprises at least one layer (B) a c ore layer comprising at least 20 weight percent linear low density polyethyl ene (LLDPE), at least 20 weight percent low density polyethylene different f rom LLDPE, at least 10 weight percent high density polyethylene and 0 to at most 5 weight percent filler, hereinafter referred to as composition B, the percentages being based upon combined weight of polymers and filler and sele cted to total 100 percent by weight. Such a film is useful to protect surfac es and preferably adheres when needed for protection and is removable after protection is no longer desired. Preferably, the film curls to an extent suf ficient to help protect the edges of the protected surface.