SINGLE-LAYERED HOT-MELT FILM ADHESIVE WHICH CAN BE WOUND ON A REEL, WITHOUT USING RELEASE OR SEPARATING AGENTS, RUNS EASILY ON MACHINES AND IS MADE FROM OLEFIN COPOLYMERS

摘要

A single-layered, plastic and elastic thermoplastic hotmelt adhesive film which does not have a separating layer, wherein it can be wound on and off a reel without the use of a supplementary separating material, is essentially free of antiblocking agents and/or lubricants and that the maximum of its thermoanalytically determined main melting peak is below 90.degree.C and which is essentially formed from at least two olefin copolymers with polar comonomers A and B, wherein ethylene is preferably used as an olefinic monomer, and whose essential comonomers contain oxygen atoms and the essential oxygen-containing comonomers in the olefin copolymers A and B are not identical, wherein the total proportion of oxygen-containing comonomer in the total weight of polymer resin forming the film is between 18 wt.% and 40 wt.% and the proportion of oxygen-containing comonomers in copolymer A is at least 60 wt.% of the total weight of oxygen-containing comonomers and copolymers A and B are mutually degraded under a sufficient shearing force for copolymer B to be present as a finely distributed second phase in copolymer A.