Packaging film for high temperature materials
AssigneeBemis Company, Inc.
InventorScott J. Kelly
Life of this patent
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Abstract
A packaging film is described. The packaging film comprises an exterior layer comprising a first polyolefin having a density of less than or equal to 0.925 g/cm3 and a first polyolefin-silicone copolymer. The packaging film is adapted for exposure to temperatures from 88° C. to 177° C. (154° F. to 350° F.). Various embodiments of the packaging film are also described.
Claims20
A packaging film comprising an exterior layer comprising a first polyolefin having a density of less than or equal to 0.925 g/cm3 and a first polyolefin-silicone copolymer, wherein the packaging film is adapted for exposure to temperatures from 68° C. to 177° C. (154° F. to 350° F.).
A package comprising
- (a) a first wall and a second wall, wherein the first wall and the second wall are formed from a packaging film comprising
- (i) an exterior layer comprising a first polyolefin having a density of less than or equal to 0.925 g/cm3 and a first polyolefin-silicone copolymer in an amount from 0.5% to 5.0% by weight of the exterior layer,
- (ii) an interior layer comprising a second polyolefin having a density of less than or equal to 0.925 g/cm3 and a second polyolefin-silicone copolymer in an amount from 0.5% to 5.0% by weight of the interior layer,
- (iii) a first polyamide layer positioned between the exterior layer and the interior layer, and
- (iv) a second polyamide layer positioned between the first polyamide layer and the interior layer,
- wherein a sheet of the packaging film has a sheet first side and an opposing sheet second side, and
- wherein the packaging film is adapted to package products having temperatures from 68° C. to 110° C. (154° F. to 230° F.);
- and
- (b) a first seal connecting the sheet first side to the sheet second side, wherein the first seal is a lap seal.
A package comprising
- (a) a first wall and a second wall, wherein the first wall and the second wall are formed from a packaging film comprising
- (i) an exterior layer comprising a first polyolefin having a density of less than or equal to 0.925 g/cm3 and a first polyolefin-silicone copolymer in an amount from 0.5% to 5.0% by weight of the exterior layer,
- (ii) an interior layer comprising a second polyolefin having a density of less than or equal to 0.925 g/cm3 and a second polyolefin-silicone copolymer in an amount from 0.5% to 5.0% by weight of the interior layer,
- (iii) an inner layer positioned between the exterior layer and the interior layer and comprising a third polyolefin having a density of less than or equal to 0.925 g/cm3 and a third polyolefin-silicone copolymer,
- (iv) at least one additional layer compromising an oxygen barrier material and positioned between the exterior layer and the inner layer, and
- (v) at least another additional layer compromising an oxygen barrier material and positioned between the inner layer and the interior layer,
- wherein the packaging film is adapted to package products having temperatures from 68° C. to 110° C. (154° F. to 230° F.);
- and
- (b) a perimeter seal connecting the first wall to the second wall.
Dependencies are inferred from the claim text.