Packing bag structure

Details Packing bag structure Packing bag structure

2004-09-20

2009-08-04

Miggins, Michael C (Department: 1794)

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

C428S035200, C428S035700, C428S036600, C428S220000, C383S102000, C383S113000

Reexamination Certificate

active

07569263

ABSTRACT:
A packing bag structure formed of inner and outer bag members made of synthetic resin inner and outer films having different moisture permeabilities enables easy-to-dry moist foods or other perishable products to be packed in a suitable state and stored in a non-soggy and untarnished condition. The inner film has moisture permeability of 9 to 200 g/(m2·24 h), preferably 20 to 30 g/(m2·24 h), and the outer film has moisture permeability of 4 to 15 g/(m2·24 h), preferably 7 to 10 g/(m2·24 h). The packing bag is produced by folding a long film sheet formed of the inner and outer films into two, having an article such as food placed between the twofold film sheet, thermally sealing the film sheet by using an end sealer and cutting off the packed and sealed portion.

REFERENCES:
patent: 6550966 (2003-04-01), Saad et al.
patent: 2003/0198764 (2003-10-01), Kendig
patent: 49-38681 (1974-04-01), None
patent: 6-56170 (1994-03-01), None
patent: 2002-1875 (2002-01-01), None
patent: 2002-194324 (2002-07-01), None
patent: WO 00/63092 (2000-10-01), None

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