| 摘要 |
<p>A process for manufacturing a bi-axially oriented, heat-shrinkable, polyolefin, multi-layer film comprising a first layer (A) comprising an ethylene-α-olefin copolymer and a second layer (B), which is an outer layer, comprising an ethylene or propylene homo- or copolymer, which process comprises melt extrusion of the film polymers through a flat die and orientation of the obtained cast sheet simultaneously in the longitudinal and the transversal directions by a simultaneous tenter.</p> |
