| 摘要 |
A method is provided for producing a polymer product by extruding a tubular net and applying a finely divided material to the net to form a new product. In one embodiment the finely divided material may at least partially block the openings of the net. When the openings are partially blocked, the product may be biaxially oriented by applying a pressure differential between the interior and the exterior of the product immediately after extrusion. The pressure differential is maintained by the partial blockage of the openings in the extruding net to permanently stretch and orient the net.
|
