resins, multilayer films and packaging comprising the same

摘要

the present invention provides resins for use as a sealing layer in a multilayer film, multilayer films and packages formed from these films. in one aspect, a resin for use as a sealing layer in a multilayer film comprises (a) 10 to 30 weight percent low density polyethylene based on the total weight of the resin; (b) 60% by weight or more of a random polypropylene copolymer based on the total weight of the resin; and (c) 5 to 25 weight percent of a crystalline block copolymer (cbc) composite comprising: i) a crystalline ethylene-based polymer (cep) comprising at least 90 mol% of polymerized ethylene; ii) an alpha-olefin-based crystalline polymer (caop); and iii) a block copolymer comprising (1) a crystalline ethylene block (ceb) comprising at least 90 mol% of polymerized ethylene and (2) a crystalline alpha-olefin block (caob).