发明名称 |
METHOD FOR PRODUCING FINE MONOFILAMENTS CONSISTING OF POLYPROPYLENE, FINE MONOFILAMENTS CONSISTING OF POLYPROPYLENE AND THE USE THEREOF |
摘要 |
In a process for producing fine monofilaments having improved abrasion resistance from a polypropylene having a melt flow index (MFI)230° C./2.16 kg of 2-16 g/10 min at a linear density of 5-20 dtex (0.027 mm-0.053 mm), a compound consisting of 80 to 99.9% by weight of chips and 20 to 0.1% by weight of an additive is added to the extruder, the melt is spun at a speed of at least 1200 m/min, the fiber is cooled in an air bath at room temperature, supplementarily stretched at a temperature of 110-150° C. to a linear density of 5-20 dtex and wound up.The monofilaments comprising a polypropylene having a melt flow index (MFI) 230° C./2.16 kg of 2-16 g/10 min, having improved abrasion resistance, and a linear density of 5-20 dtex (0.027 mm-0.053 mm) and an abrasion resistance score <=2. The monofilaments have a tenacity of at least 48 cN/tex and an elongation at break of less than 45% for a mechanical constant (constante méhanique) of at least 295 cN/tex and a specific work to break value of more than 61.5 cN.cm/dtex.The fine monofilaments according to the invention are useful for producing woven screen fabrics for filtration and screen printing without abrasion deposits. |
申请公布号 |
EP1392897(A1) |
申请公布日期 |
2004.03.03 |
申请号 |
EP20020704535 |
申请日期 |
2002.03.22 |
申请人 |
RHODIA INDUSTRIAL YARNS AG |
发明人 |
SCHUETZE, GUSTAV;KURT, MAX |
分类号 |
D01F1/10;D01F6/06;D01F6/46;(IPC1-7):D01F6/46 |
主分类号 |
D01F1/10 |
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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