초록 ▼

A first web having an ionomer, or ionomer/ethylene vinyl acetate copolymer (EVA) sealant layer, heat sealed to a second web having an EVA/ethytlene butene copolymer (EBC)/polypropylene (PP) sealant layer, forms an easily opened package. A layer adjacent the sealant layer of the second web optionally

A first web having an ionomer, or ionomer/ethylene vinyl acetate copolymer (EVA) sealant layer, heat sealed to a second web having an EVA/ethytlene butene copolymer (EBC)/polypropylene (PP) sealant layer, forms an easily opened package. A layer adjacent the sealant layer of the second web optionally includes PP or ethylene propylene copolymer. With this optional layer, the sealant layer of the first web may comprise a polymeric material which forms strong interweb adhesion upon heat sealing.

대표청구항 ▼

A process for producing a package having a peel opening force of less than about 2.5 pounds per inch comprising: (a) forming a first web having a sealant layer comprising a polymeric material selected from the group consisting of ionomer, and a blend of said ionomer and ethylene vinyl acetate copoly

A process for producing a package having a peel opening force of less than about 2.5 pounds per inch comprising: (a) forming a first web having a sealant layer comprising a polymeric material selected from the group consisting of ionomer, and a blend of said ionomer and ethylene vinyl acetate copolymer; (b) placing the article on the first formed web; (c) disposing the second web having a sealant layer comprising a blend of ethylene vinyl acetate copolymer, ethylene butene copolymer, and polypropylene over the product to form an enclosure; (d) heating the second web; (e) vacuumizing the enclosure; (f) forming a perimeter seal at or near the periphery of the package by heat sealing the first and second webs thereat; and (g) forming a bonded area adjacent to said perimeter seal by causing the heated second web to tack to the first web so as to enclose the article between the webs.