| 发明名称 |
SHAPING APPARATUS FOR THE EXTRUSION OF TUBULAR THERMOPLASTIC FILM |
| 摘要 |
<p>Blown tubular film is formed by an extruder using a diverging housing with cooling fluid inlets to cool the film bubble. The inlets are arranged so as to create a partial vacuum which draws the bubble outwards and conforms it to the shape of the housing without bringing the hot film into contact with the housing.</p> |
| 申请公布号 |
CA1060164(A) |
申请公布日期 |
1979.08.14 |
| 申请号 |
CA19750218052 |
申请日期 |
1975.01.16 |
| 申请人 |
MOBIL OIL CORPORATION |
发明人 |
|
| 分类号 |
B29C49/64;B29C47/20;B29C47/52;B29C47/88;B29C49/04;B29C49/08;B29C49/58;B29D7/01 |
主分类号 |
B29C49/64 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
