Packaging based on a polymer containing polyamide blocks and pol

Details Packaging based on a polymer containing polyamide blocks and pol Packaging based on a polymer containing polyamide blocks and pol

1996-04-10

1999-03-30

Glass, Margaret W.

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

426415, 528288, 525408, 525425, B29D 2200

Patent

active

058885978

ABSTRACT:
The invention relates to a packaging comprising a thermoplastic film based on a polymer containing polyamide blocks and polyether blocks, said polymer being permeable to water vapor, to ethylene, to CO.sub.2 and to oxygen, such that the permeability to CO.sub.2 is very much greater than the permeability to oxygen. The invention is particularly useful for making sachets in order to conserve fresh fruit, vegetables or meat.

REFERENCES:
patent: 3946089 (1976-03-01), Furukawa et al.
patent: 4808675 (1989-02-01), Twilley et al.
patent: 4847142 (1989-07-01), Twilley et al.
patent: 4937139 (1990-06-01), Genske et al.
patent: 5166309 (1992-11-01), Maj et al.
patent: 5254354 (1993-10-01), Stewart
patent: 5348804 (1994-09-01), Vasselin et al.
patent: 5369179 (1994-11-01), Havens

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