| 摘要 |
A shrink film includes an internal layer including a styrene/butadiene/styrene block copolymer; and first and second outer layers including an olefinic polymer. First and second intermediate layers including an ethylene copolymer having a melt index less than 4.0 can be optionally included. Alternatively, a shrink film includes an internal layer including an ethylene copolymer having a melt index less than 4.0; a first and second intermediate layer each including a styrene/butadiene/styrene block copolymer; and a first and second outer layer each including an olefinic polymer. Film of the invention has a free shrink of from 40% to 80% at 240° F., and an Elmendorf tear of from 70 grams/mil to 300 grams/mil, in at least one of the longitudinal and transverse directions. |
