초록 ▼

A nonoriented, heat sealable, coextruded, moisture barrier film is disclosed. This film has a base layer (“A”) of polypropylene homopolymer, polypropylene copolymer or combinations thereof, a heat sealant layer (“C”) of polyester/copolyester or blends thereof and a tie layer (“B”) of modified polyet

A nonoriented, heat sealable, coextruded, moisture barrier film is disclosed. This film has a base layer (“A”) of polypropylene homopolymer, polypropylene copolymer or combinations thereof, a heat sealant layer (“C”) of polyester/copolyester or blends thereof and a tie layer (“B”) of modified polyethylene homopolymer, modified polyethylene copolymer, modified polypropylene homopolymer, modified polypropylene copolymer, an unmodified polyethylene copolymer or combinations thereof between the base layer (“A”) and the heat sealant layer (“C”). This film has three layers (“ABC”) or five layers (“CBABC”). This film exhibits a very broad heat seal range and has a moisture vapor transmission rate of from about 0.20 to about 1.0 g/100in2/24 hr. This film has a wide variety of applications as a packaging film including such demanding uses as the inside of a microwave popcorn bag. This film significantly improves the shelf life of microwave popcorn compared to conventional films used for this product. This film also exhibits excellent heat seal properties to itself as well as a wide variety of diverse substrates.

대표청구항 ▼

A nonoriented, heat sealable, coextruded, moisture barrier film comprising: a base layer selected from the group consisting of a polypropylene homopolymer, a polypropylene copolymer and combinations thereof; a heat sealant layer selected from the group consisting of a polyester, a copolyester and co

A nonoriented, heat sealable, coextruded, moisture barrier film comprising: a base layer selected from the group consisting of a polypropylene homopolymer, a polypropylene copolymer and combinations thereof; a heat sealant layer selected from the group consisting of a polyester, a copolyester and combinations thereof; and a tie layer between the base layer and the heat sealant layer selected from the group consisting of a modified polyolefin blend, an unmodified polyethylene copolymer and combinations thereof.