초록

A multilayer hot blown film useful in chub packaging comprises a first outer layer of a heat-sealable polymeric material; a first interior layer of a high molecular weight polymeric material; a second interior layer of a polyamide; and a second outer layer of a self-weldable polymeric material.

대표청구항 ▼

A multilayer hot blown film useful in chub packaging comprising: (a) a first outer layer comprising a heat sealable material selected from the group consisting of linear low density polyethylene, very low density polyethylene, and blends thereof; (b) a first interior layer adjacent the first outer l

A multilayer hot blown film useful in chub packaging comprising: (a) a first outer layer comprising a heat sealable material selected from the group consisting of linear low density polyethylene, very low density polyethylene, and blends thereof; (b) a first interior layer adjacent the first outer layer comprising a polymeric material of high molecular weight and fractional melt index selected from the group consisting of high density polyethylene, low density polyethylene and ethylene vinyl acetate copolymer; (c) a second interior layer comprising a polyamide; (d) a second outer layer comprising a self-weldable polymeric material selected from the group consisting of copolyamide and ethylene vinyl acetate copolymer; (e) an adhesive layer disposed between the first and second interior layers and comprising a chemically modified ethylene unsaturated ester copolymer; and (f) an oxygen barrier layer disposed between the second interior layer and the second outer layer and comprising a material selected from the group consisting of ethylene vinyl alcohol copolymer, vinylidene chloride copolymer and polyamide.