| 摘要 |
<p>A film includes a core layer including a linear random alpha-olefin/vinyl aromatic copolymer; and first and second outer layers including an olefinic polymer; the film having Young s modulus between 50,000 and 200,000 psi, free shrink between 40 and 80% at 240F, and shrink tension of between 50 and 400 psi, or a shrink force of between 20 and 180 grams, at 240F. First and second intermediate layers including an ethylene copolymer having a melt index less than 2.0 can be optionally included. Alternatively, a film includes a core layer including an ethylene copolymer having melt index less than 2.0; first and second intermediate layers including a linear random alpha-olefin/vinyl aromatic copolymer; and first and second outer layers including an olefinic polymer; the film having properties as disclosed above.</p> |
