| 摘要 |
<p>Packaging containing a PVDC barrier layer is manufactured without any significant orientation, with the result that the PVDC barrier layer remains flexible at significantly greater thicknesses than when it is oriented. This increased thickness compensates for the reduced barrier properties resulting from less crystallinity of the PVDC, and hence multilayer plastic tubing can be manufactured in which PVDC is used as a barrier layer instead of aluminum.</p> |
