发明名称 |
Process of making a yarn |
摘要 |
A method of converting a plastics material into a yarn includes heating the material to melt it and pumping the melted material through an extrusion die (114) to form an extruded filament (116). The extruded filament is cooled and passed through a first draw roller assembly (122) while elevating the temperature of the filament. The filament (116) is heated in a heating zone (126) as it exits the first draw roller assembly. Thereafter the filament is passed through a second draw roller assembly (134) operating at a different linear speed to the first draw roller assembly (122). The filament (116) is spooled after exiting the second draw roller assembly (134).
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申请公布号 |
US6303063(B1) |
申请公布日期 |
2001.10.16 |
申请号 |
US19990330491 |
申请日期 |
1999.06.11 |
申请人 |
PERI-DENT LIMITED |
发明人 |
ROBERTS IAN;HILL DAVID MACKENZIE |
分类号 |
A61C15/04;D01D5/16;D01F6/04;D01F6/06;D01F6/30;D01F6/46;(IPC1-7):A61C15/04;D01D5/088;D01D5/098 |
主分类号 |
A61C15/04 |
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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