发明申请
- 专利标题： Vinylidene fluoride resin monofilament and process for producing the same
- 专利标题（中）： 偏二氟乙烯树脂单丝及其制造方法
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申请号： US12461496申请日： 2009-08-13
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公开(公告)号： US20090295038A1公开(公告)日： 2009-12-03
- 发明人: Satoshi Hashimoto , Masaru Satou , Masayuki Hino , Toshiya Mizuno
- 申请人： Satoshi Hashimoto , Masaru Satou , Masayuki Hino , Toshiya Mizuno
- 优先权： JP342237/2003(PAT.) 20030930
- 主分类号： B29C71/02
- IPC分类号： B29C71/02
摘要：
A monofilament obtained by smelt-spinning and stretching of a vinylidene fluoride resin is subjected to a high-temperature relaxation treatment for an extremely short period of 0.05-0.5 sec. within a high-temperature heating oil bath at a temperature of 140-175° C., thereby producing a vinylidene fluoride resin monofilament, which comprises a vinylidene fluoride resin having an inherent viscosity of at least 1.40 dl/g, and has a knot strength (JIS L1013) of at least 600 MPa and excellent anti-twist property represented by a twist index of at least 0.90 when measured after the monofilament being subjected to application for 1 minute of a tensile load equal to approximately 50% of a maximum tensile load (JIS K7113), removal of the load, and standing for 3 hours.
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