发明名称 |
Process for extruding and sizing foamed thermoplastic cigarette filter rods |
摘要 |
A method of sizing thermoplastic foamed cigarette filter rods and apparatus therefore. The apparatus comprises a rotating drum member having a plurality of stationary heated block members mounted about the periphery thereof. The block members are positioned such that a specific gap is created through which the thermoplastic polymeric filter rods are rolled and compressed to a uniform circumference.
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申请公布号 |
US4576769(A) |
申请公布日期 |
1986.03.18 |
申请号 |
US19840594635 |
申请日期 |
1984.03.29 |
申请人 |
CELANESE CORPORATION |
发明人 |
HARGETT, JR., WYATT P. |
分类号 |
B29C44/50;B29C69/00;H04N1/04;(IPC1-7):B29C67/22;B29C59/04 |
主分类号 |
B29C44/50 |
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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