Single-layer elastic tubular film of polyamide used for packagin

Details Single-layer elastic tubular film of polyamide used for packagin Single-layer elastic tubular film of polyamide used for packagin

1984-06-13

1985-12-24

Kittle, John E.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

2642095, 2642358, 1381181, C21C 700, F16L 1100

Patent

active

045605203

ABSTRACT:
The present invention relates to a tubular film used for packing foodstuffs in paste form, this tubular film being polyamide that can absorb at least 5% water, and which at an internal pressure between 0 and 0.6 bar permits substantially reversible deformation and which has a matt appearance. The present invention also relates to a process for the production of this tubular film by multiaxial stretching of the primary tube with stretch ratios of at least 1:2.3 in the longitudinal direction and at least 1:2.5 in the transverse direction, and total thermal fixing of the stretched tube during controlled shrinkage. In addition, the invention describes a boiled or cooked sausage as well as a soft cheese, these being packed in a tubular film according to the invention.

REFERENCES:
patent: 3369911 (1968-02-01), von Witzleben
patent: 4061707 (1977-12-01), Nohtomi et al.
patent: 4243074 (1981-01-01), Strutzel et al.
patent: 4303711 (1981-12-01), Erk et al.

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