Nova Patents
EP1985443B1

Stack sealable heat shrinkable film

Abstract

This record has no abstract on file.

Term

1.6 yearsleft in the term

Expires 17 April 2028.

  1. Priority and filed
  2. Granted
  3. Today
  4. Expires

11 claims: 6 independent, 5 dependent

  1. 1
    A heat shrinkable film having a shrinkage of at least 10% measured according to ASTM 2732 in water at 90°C in at least one of MD, TD directions, where the film comprises an outer layer comprising polyester elastomer, a core barrier layer comprising EVOH and/or PVDC and an inner sealing layer.
  2. 4
    The film of one or more of the preceding claims, wherein the film further comprises an adjacent layer, which adjacent layer bonds the outer layer to the core barrier layer and preferably comprises maleic anhydride modified polyolefin or other polyolefinic materials.
  3. 5
    The film of one or more of the preceding claims, wherein between the sealing layer and the core barrier layer a tie layer is located and wherein the tie layer comprises ethylene ester copolymers, such as ethylene vinyl acetate copolymers, and/or ethylene methyl acrylate copolymers, or wherein the tie layer includes maleic anhydride modified ethylene ester copolymers or maleic anhydride modified LLDPE.
  4. 7
    The film of one or more of the preceding claims, wherein any of the layers includes additives such as slip agents, antiblock, polymer processing aids, antistatic, antifog agents, acid scavengers, or odour scavengers.
  5. 8
    The film of one or more of the preceding claims, wherein the heat shrinkable film is irradiated after the extrusion.
  6. 9
    A bag or pouch comprising a film according to one or more of the preceding claims.
Independent claims6