초록 ▼

A biaxially stretched five-layer film suitable for packaging fatty foodstuffs of irregular shape is disclosed, which has a first (outermost) layer made of an ionomer, an olefin homopolymer, an olefin copolymer or a mixture of the olefin homopolymer with the olefin copolymer, a second layer of an eth

A biaxially stretched five-layer film suitable for packaging fatty foodstuffs of irregular shape is disclosed, which has a first (outermost) layer made of an ionomer, an olefin homopolymer, an olefin copolymer or a mixture of the olefin homopolymer with the olefin copolymer, a second layer of an ethylene copolymer, a third layer of a vinylidene copolymer, a fourth layer of an ethylene copolymer and a fifth (innermost) layer of an ionomer. This film is obtained by preparing a laminate consisting of the layers of respective resins mentioned above by means of a specific die designed for multi-layer tubular molding and biaxially stretching the laminate under specific conditions.

대표청구항 ▼

A biaxially stretched five-layer laminate film comprising: a first layer of an ionomer, an olefin homopolymer, an olefin copolymer or mixture of an olefin homopolymer with an olefin copolymer and having a thickness in the range of from 7 to 25m20 to 50m5°to 30°C. lower than that of the ionomer of sa

A biaxially stretched five-layer laminate film comprising: a first layer of an ionomer, an olefin homopolymer, an olefin copolymer or mixture of an olefin homopolymer with an olefin copolymer and having a thickness in the range of from 7 to 25m20 to 50m5°to 30°C. lower than that of the ionomer of said first or the ionomer of the fifth layer and having a thickness in the range of from 0.2 to 3m5 to 15m5°to 30°C. lower than that of the ionomer of said first or fifth layer and having a thickness in the range of from 0.2 to 3m0.4 to 0.6 and the total thickness of the film being in the range of from 35 to 90m