Five-layered, biaxially-oriented tubular film for packaging...

A - Human Necessities – 22 – C

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A22C 13/00 (2006.01)

Patent

CA 2434586

The invention relates to a five-layered, biaxially-oriented, shrinkable and sealable tubular film for the packaging and wrapping of meat, or meat with bones and the use thereof. Said tubular film comprises an inner layer made from at least one heat-sealable co-polyamide, a middle polyolefin layer and an outer layer made from at least one homo-polyamide and two bonding layers between the inner and middle layers and the middle and outer layers. Such films are characterised by a superior resistance of the sealing join and high puncture-resistance.

L'invention concerne un film tubulaire à cinq couches, étiré biaxialement, rétractable et soudable, utilisé pour emballer et envelopper de la viande ou de la viande avec os et son utilisation. Ce film tubulaire comporte une couche intérieure à base d'au moins un copolyamide thermosoudable, une couche médiane en polyoléfine et une couche extérieure à base d'au moins un homopolyamide, ainsi que deux couches d'adhésivité entre la couche intérieure et la couche médiane, ainsi qu'entre la couche médiane et la couche extérieure. Les films de ce type se caractérisent par une plus grande résistance des soudures et une grande résistance à la perforation.

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