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

1996-12-13

1998-11-24

Marquis, Melvin I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

505184, C08G 6300

Patent

active

058408070

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: 4847142 (1989-07-01), Twilley
patent: 4937139 (1990-06-01), Genske et al.
patent: 5166309 (1992-11-01), Maj et al.
patent: 5254354 (1993-10-01), Stewart
patent: 5348807 (1994-09-01), Vasselin
patent: 5369179 (1994-11-01), Havens

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