发明名称 |
PROCESS FOR SPINNING UHMWPE, UHMWPE MULTIFILAMENT YARNS PRODUCED THEREOF AND PRODUCTS COMPRISING SAID YARNS |
摘要 |
The invention relates to a gel-spinning process for producing a high tensile strength ultra high molecular weight polyethylene (UHMWPE) multifilament yarn comprising ultra-low dtex filaments, the process being characterized in that the draw ratio DRfluid applied to fluid filaments obtained by spinning a solution of UHMWPE through a spinneret and into an air gap, is at least 450, wherein DRfluid = DRsp * DRag, the DRsp and DRag being the draw ratios in the spinholes and in the air gap, respectively; and provided that DRag is at least 30. The UHMWPE multifilament yarns produced thereof were characterized by a tensile strength of at least 3.5 GPa and contained filaments having a dtex of at most 0.5. The invention further relates to products comprising said yarns, e.g. fabrics, medical devices and composite and ballistic articles. |
申请公布号 |
WO2009077168(A3) |
申请公布日期 |
2009.09.11 |
申请号 |
WO2008EP10748 |
申请日期 |
2008.12.17 |
申请人 |
DSM IP ASSETS B.V.;MARISSEN, ROELOF;SIMMELINK, JOSEPH, ARNOLD, PAUL, MARIA |
发明人 |
MARISSEN, ROELOF;SIMMELINK, JOSEPH, ARNOLD, PAUL, MARIA |
分类号 |
D01F6/04 |
主分类号 |
D01F6/04 |
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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