초록

A barrier stretch film comprises an outer layer of a heat sealable polymeric material; a first interior layer of an oxygen barrier polymeric material; a second interior layer of a high molecular weight polymer; an inner copolyamide layer; and an adhesive between the second interior and inner layers.

대표청구항 ▼

A composite having a barrier stretch film comprising (a) an outer layer comprising a heat sealable polymeric material; (b) a first interior layer comprising an oxygen barrier polymeric material; (c) a second interior layer comprising a high molecular weight polymeric material; (d) an inner layer com

A composite having a barrier stretch film comprising (a) an outer layer comprising a heat sealable polymeric material; (b) a first interior layer comprising an oxygen barrier polymeric material; (c) a second interior layer comprising a high molecular weight polymeric material; (d) an inner layer comprising a copolyamide, and (e) a polymeric adhesive disposed between the second interior and inner layers; wherein said film is a lay-flat tubular film having its interior lay-flat surfaces self-welded and further comprising a second film, bonded to one surface of said barrier stretch film, comprising a polymeric material selected from the group consisting of: (a) oriented polyester, (b) oriented nylon, (c) a multilayer film having an outer layer of propylene homopolymer or copolymer and an inner bonding layer of ethylene vinyl acetate copolymer, and (d) a biaxially oriented stretch film having exterior and core layers of ethylene vinyl acetate copolymer, and two intermediate layers of linear low density polyethylene.