Transparent heat-sealing film

Details Transparent heat-sealing film Transparent heat-sealing film

2008-03-11

2008-03-11

Mullis, Jeffrey (Department: 1711)

Stock material or miscellaneous articles

Composite

Of polyester

C525S089000

Reexamination Certificate

active

11119692

ABSTRACT:
A heat-sealing film having a haze of not more than 30% and having a sealant layer made of a resin composition which comprises from 50 to 100 wt % of the total of the following components (a) to (c):(a) from 5 to 50 wt % of a block copolymer of from 50 to 95 wt % of a styrene-type hydrocarbon and from 5 to 50 wt % of a conjugated diene-type hydrocarbon,(b) from 5 to 50 wt % of an ethylene/α-olefin random copolymer, and(c) from 5 to 70 wt % of a block copolymer of from 10 to 50 wt % of a styrene-type hydrocarbon and from 50 to 90 wt % of a conjugated diene-type hydrocarbon, and(d) from 0 to 50 wt % of an impact-resistant polystyrene.

REFERENCES:
patent: 4302554 (1981-11-01), Nabeta et al.
patent: 5208103 (1993-05-01), Miyamoto et al.
patent: 5599621 (1997-02-01), Akhter
patent: 5670254 (1997-09-01), Akhter
patent: 6183842 (2001-02-01), Shimizu et al.
patent: 6902795 (2005-06-01), Ishii et al.
patent: 0 437 745 (1991-07-01), None
patent: 54-120646 (1979-09-01), None
patent: 03-221545 (1991-09-01), None
patent: 8-118566 (1996-05-01), None
Chemical Abstract, JP 54-120646, Sep. 19, 1979.

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