| 摘要 |
A packaging film is disclosed having both gas barrier and stretchability properties comprising at least one barrier layer made of polymers or copolymers with low gas permeability modified by the inclusion therein of 1 to 20% by weight of a stiffness modifying agent selected from plasticizers and elastomers, and at least one stretchable layer of olefin polymers or copolymers. |
