发明名称 |
Method for extrusion-molding laminated parison and apparatus for the same |
摘要 |
The present invention provides a laminated-parison extrusion-molding apparatus which includes a head body; a multi-ring structure having a spider provided in the head body; a head core provided inside the multi-ring structure; an outer cylinder member provided surrounding a lower outer periphery of the multi-ring structure, the outer cylinder member constituting a lower portion of the head body; and an annular member provided inside the outer cylinder member, wherein an outer main material is supplied to a flow passage provided between the outer cylinder member and the annular member so as to achieve an outer main material layer having a uniform thickness.
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申请公布号 |
US5855926(A) |
申请公布日期 |
1999.01.05 |
申请号 |
US19970956400 |
申请日期 |
1997.10.23 |
申请人 |
THE JAPAN STEEL WORKS, LTD. |
发明人 |
YOSHIDA, TOSHIJI;KAGITANI, TOSHIO;MASAKI, SOHEI |
分类号 |
B29C47/06;B29C47/28;(IPC1-7):B29C47/04;B29C47/26 |
主分类号 |
B29C47/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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