摘要 |
<p>A film includes a core layer including a homogeneous random alpha-olefin/cyclic olefin copolymer; and first and second outer layers including an olefmic polymer; the film having Young's modulus between about 50,000 and about 200,000 psi, free shrink between about 10% and about 80% at 240°F, and shrink tension of less than about 400 psi, or a shrink force of between about 20 and about 180 grams, at 240°F. First and second intermediate layers including an ethylene copolymer having a melt index less than about 2.0 g/10 minutes can be optionally included. Alternatively, a film includes a core layer including an ethylene copolymer having melt index less than about 2.0 g/10 minutes; first and second intermediate layers including a homogeneous random alpha-olefin/cyclic olefin copolymer; and first and second outer layers including an olefmic polymer; the film having properties as disclosed above.</p> |
申请人 |
CRYOVAC, INC.;ROBERTS, WILLIAM, P.;MOFFITT, RONALD, D.;DAYRIT, RICHARD, M.;CHILDRESS, BLAINE, C.;GAUTHIER, WILLIAM, J.;LAMBERT, SCOTT, W. |
发明人 |
ROBERTS, WILLIAM, P.;MOFFITT, RONALD, D.;DAYRIT, RICHARD, M.;CHILDRESS, BLAINE, C.;GAUTHIER, WILLIAM, J.;LAMBERT, SCOTT, W. |