Packaging film, in particular a sausage casing, based on polyami

Details Packaging film, in particular a sausage casing, based on polyami Packaging film, in particular a sausage casing, based on polyami

1989-01-18

1990-07-31

Seidleck, James

Stock material or miscellaneous articles

Hollow or container type article

Flexible food casing

1381181, 426105, 426175, 428 355, 524538, 525425, F16L 1100, B65D 8134

Patent

active

049449702

ABSTRACT:
A tubular, biaxially stretch-oriented packaging film, in particular a sausage casing, comprising a polymer mixture which comprises an aliphatic polyamide, a polyterephthalic acid ester, an aromatic polyamide comprising branched aliphatic diamines having at least 7 carbon atoms and aromatic dicarboxylic acids, or aromatic diamines and aliphatic dicarboxylic acids having 5 to 11 carbon atoms and a dye. The weight amount of the aromatic polyamide is preferably equal to, and particularly preferably greater than, the weight amount of dye. A masterbatch suitable for producing the film is also disclosed. With particular advantage, the film having the above described composition can be dyed deep black or brilliant red.

REFERENCES:
patent: 4120928 (1978-10-01), Furukawa et al.
patent: 4133802 (1979-01-01), Hachiboshi et al.
patent: 4243074 (1981-01-01), Strutzel et al.
patent: 4486507 (1984-12-01), Schumacher
patent: 4659599 (1987-04-01), Strutzel
patent: 4764406 (1988-08-01), Hisazumi et al.
patent: 4812534 (1989-03-01), Blakely
"Amorphe Polyamide aus Terephthalsaeure und verzweigten Diaminen", Von R, Gabler et al., Chimia 21, pp. 65-81, 1967.

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