发明名称 |
ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE THIN-WALL PIPE, AND METHOD OF AND APPARATUS FOR MANUFACTURING THE SAME |
摘要 |
An ultra-high molecular weight polyethylene thin-wall pipe which is uniform in thickness and free from a folded mark as well as a method of and an apparatus for manufacturing the same. The ultra-high molecular weight polyethylene thin-wall pipe is manufactured by supplying ultra-high molecular weight polyethylene into and melting and kneading, continuously extruding the molten substance of the ultra-high molecular weight polyethylene from a die connected to a screw of the screw extruder to form a cylindrical roughly shaped article, and diametrically expanding the cylindrical roughly extruded article by means of a tapered core and taking up. |
申请公布号 |
CA2064939(C) |
申请公布日期 |
1995.08.01 |
申请号 |
CA19922064939 |
申请日期 |
1992.04.02 |
申请人 |
MITSUI PETROCHEMICAL INDUSTRIES, LTD. |
发明人 |
SHIRAKI, TAKESHI;SUZUKI, IWATOSI;HIROSHIGE, KUNIE |
分类号 |
B29C47/00;B29C47/60;B29C55/24;F16L9/12 |
主分类号 |
B29C47/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|