| 摘要 |
<p>A novel process for manufacturing a container achieved by coextruding a middle tube (14) of material having a low oxygen transmission rate between outer (16) and inner (12) tubes of olefin polymer to form a multilayered tubular unit. The outer tube (16) is cross-linked and the unit is biaxially oriented to a desired size. The inner tube (12) is sealed to itself to complete formation of the container (10) which includes an inner layer of olefin polymer, a middle layer of material having low oxygen permeability, and a relatively strong outer layer of cross-linked olefin polymer.</p> |
