Invention Grant
US5593775A 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 失效
可以卷绕在卷轴上而不使用释放或分离剂的单层热熔胶粘合剂容易在机器上运行,并且由烯烃共聚物

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
Abstract:
A single-layered, plastic and elastic thermoplastic hot-melt 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.
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