Thick shrink film having high oxygen transmission rate

A multilayer film, comprising:

• (A) a first layer which is a first outer film layer and which serves as a heat seal layer, the first layer comprising a first polymer, the first layer having a thickness of from 2 to 20 percent of a total thickness of the multilayer film;
• and
• (B) at least one second layer which serves as a high oxygen transmission layer, the at least one second layer comprising at least one member selected from the group consisting of:
• (i) ethylene/butyl acrylate copolymer,
• (ii) homogeneous ethylene/alpha-olefin copolymer having a density of from 0.86 to 0.91 g/cc
• (iii) heterogeneous ethylene/alpha-olefin copolymer having a density of from 0.89 to 0.91 g/cc;
• (iv) ethylene/methyl acrylate copolymer having a methyl acrylate mer content of from 20 to 24 mole percent;
• (v) ethylene/vinyl acetate copolymer having a vinyl acetate mer content of from 10 to 30 mole percent;
• (vi) styrene butadiene block copolymer;
• and
• the at least one second layer having a thickness of from 80 to 98 percent of the total thickness of the multilayer film;
• the total thickness of the multilayer film being at least 1.5 mils, and the film having an oxygen transmission rate of at least 10,000 cc/m2/24 hr@STP.

A heat-shrinkable bag, comprising a multilayer film heat sealed to itself or another film, the multilayer film comprising:

• (A) a first layer which is a first outer film layer and which serves as a heat seal layer, the first layer comprising a first polymer, the first layer having a thickness of from 2 to 20 percent of a total thickness of the multilayer film;
• and
• (B) at least one second layer which serves as a high oxygen transmission layer, the at least one second layer comprising at least one member selected from the group consisting of:
• (i) ethylene/butyl acrylate copolymer,
• (ii) homogeneous ethylene/alpha-olefin copolymer having a density of from 0.86 to 0.91 g/cc
• (iii) heterogeneous ethylene/alpha-olefin copolymer having a density of from 0.89 to 0.91 g/cc;
• (iv) ethylene/methyl acrylate copolymer having a methyl acrylate mer content of from 20 to 24 mole percent;
• (v) ethylene/vinyl acetate copolymer having a vinyl acetate mer content of from 10 to 30 mole percent;
• (vi) styrene butadiene block copolymer;
• and
• the at least one second layer having a thickness of from 80 to 98 percent of the total thickness of the multilayer film;
• the total thickness of the multilayer film being at least 1.5 mils, and the film having an oxygen transmission rate of at least 10,000 cc/m2/24 hr@STP.

A packaged product comprising:

• (A) a product comprising at least one member selected from the group consisting of seafood and produce;
• (B) a package surrounding the product, the package comprising a multilayer film comprising:
• (i) a first layer which is a first outer film layer and which serves as a heat seal layer, the first layer comprising a first polymer, the first layer having a thickness of from 2 to 20 percent of a total thickness of the multilayer film;
• and
• (ii) at least one second layer which serves as a high oxygen transmission layer, the at least one second layer comprising at least one member selected from the group consisting of:
• (1) ethylene/butyl acrylate copolymer,
• (2) homogeneous ethylene/alpha-olefin copolymer having a density of from 0.86 to 0.91 g/cc
• (3) heterogeneous ethylene/alpha-olefin copolymer having a density of from 0.89 to 0.91 g/cc;
• (4) ethylene/methyl acrylate copolymer having a methyl acrylate mer content of from 20 to 24 mole percent;
• (5) ethylene/vinyl acetate copolymer having a vinyl acetate mer content of from 10 to 30 mole percent;
• (6) styrene butadiene block copolymer;
• and
• the at least one second layer having a thickness of from 80 to 98 percent of the total thickness of the multilayer film, and the total thickness of the multilayer film being at least 1.5 mils, and the film having an oxygen transmission rate of at least 10,000 cc/m2/24 hr@STP.