| 摘要 |
A transparent, coextruded multilayer polyolefin film which is heat-sealable on both sides and has a base layer essentially comprising propylene polymers and outer layers essentially comprising heat-sealable olefin polymers is described. The propylene polymer of the base layer has been peroxidically degraded, its degradation factor A being in the range of about 3 to about 10. The heat-sealable olefin polymer of the outer layers is an ethylene-propylene copolymer having an ethylene content in the range of about 2 to about 8% by weight which has also been peroxidically degraded. Its degradation factor A is in the range of about 3 to 15. The film is useful as, for example, a packaging film. |
