| 摘要 |
<p>A TUBE HAVING WALLS OF MULTI-LAYER CONSTRUCTION, WHEREIN SAID MULTI-LAYER CONSTRUCTION INCLUDES ONE OR MORE SUB-LAYERS, EACH SAID SUB-LAYER CONSISTING OF A WOVEN POLYMER MESH DISPOSED IN BETWEEN ONE OR MORE OUTER LAYERS OF MATERIAL SELECTED FROM THE GROUP CONSISTING OF PAPER, POLY-PROPYLENE AND POLYETHYLENE, WHEREIN SAID TUBE IS FORMED BY AFFIXING SAID SUB-LAYERS TO EACH OTHER WHILST SAID SUB-LAYERS ARE WOUND AROUND A MANDREL.</p> |
