Shrink film and package
AssigneeAmcor Flexibles North America, Inc.
InventorsFrank E. SECKAR, Jeffery C. LAWSON
Life of this patent
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Abstract
A fully coextruded shrink film is disclosed. The film includes a first polar polymer layer, a bonding layer, and a sealant layer. The bonding layer includes a blend of a bonding material and a compatibilizer material. The sealant layer is a first outer layer. The bonding layer including the compatibilizer material is positioned between the first polar polymer layer and the sealant layer. The film includes a shrinkage value of greater than 10% in each of the machine direction and the transverse direction when tested according to ASTM D2732-03 using a bath temperature of 90 degrees Celsius (° C.).
Claims16
A fully coextruded, shrink film comprising:
- a first polar polymer layer;
- a bonding layer;
- and
- a sealant layer;
- wherein the bonding layer comprises a blend of a bonding material and a compatibilizer material, wherein the sealant layer is a first outer layer of the film, wherein the bonding layer comprising the compatibilizer material is positioned between the first polar polymer layer and the sealant layer, and wherein the film includes a Shrinkage Value of greater than 10% in each of the machine direction and the transverse direction when tested according to ASTM D2732-03 using a bath temperature of 90 degrees Celsius (° C.).
A fully coextruded, shrink film comprising:
- a first polar polymer layer comprising a polyamide;
- a first bonding layer comprising a compatibilizer material and a bonding material;
- a second polar polymer layer comprising an ethylene vinyl alcohol (EVOH) copolymer;
- a second bonding layer comprising the compatibilizer material and the bonding material;
- and
- a sealant layer;
- wherein the sealant layer is a first outer layer of the film, wherein the first polar polymer layer is a second outer layer of the film, wherein the first bonding layer is positioned between the first polar polymer layer and the second polar polymer layer, wherein the second bonding layer is positioned between the second polar polymer layer and the sealant layer, and wherein the film includes a Shrinkage Value of greater than 10% in each of the machine direction and the transverse direction when tested according to ASTM D2732-03 using a bath temperature of 90 degrees Celsius (° C.).
Dependencies are inferred from the claim text.