Sealant film
AssigneeToyobo Co., Ltd.
InventorHidetoshi FUJINO
Life of this patent
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Abstract
The invention provides a sealant film that enables easy removal of even viscous contents from a packaging bag, has sufficient heat-sealability, and high easy-peelability, as well as a packaging bag comprising the film. The sealant film contains a sealing layer including a resin composition comprising (a) a polypropylene resin and (b) a silicon containing polyolefin resin, wherein (1) the ratio of a sealing strength at a sealing temperature of 200° C. and a sealing pressure of 0.4 MPa to the sealing strength at a sealing temperature of 150° C. and a sealing pressure of 0.4 MPa is 2 or less, and (2) the sealing strength at a sealing temperature of 150° C. and a sealing pressure of 0.6 MPa is 40 N/15 mm or less.
Claims8
A sealant film, comprising a sealing layer including a resin composition comprising (a) and (b), and satisfying the following (1) and (2):
- (a) a polypropylene resin,
- (b) a silicon containing polyolefin resin,
- (1) the ratio of a sealing strength at a sealing temperature of 200° C. and a sealing pressure of 0.4 MPa to the sealing strength at a sealing temperature of 150° C. and a sealing pressure of 0.4 MPa is 2 or less,
- (2) the sealing strength at a sealing temperature of 150° C. and a sealing pressure of 0.6 MPa is 40 N/15 mm or less.
Dependencies are inferred from the claim text.