发明名称 |
Water-soluble heat-press-bonding polyvinyl alcohol type binder fiber, nonwoven fabric containing said fiber, and processes for production of said fiber and said nonwoven fabric |
摘要 |
<p>By mixing a high-melting polyvinyl alcohol type polymer (A) and a low-melting water-soluble polymer (B) in a solvent for the polymer (A) to prepare a spinning solution and then subjecting the solution to low-temperature spinning so that the resulting filaments are solidified uniformly in the cross-sectional direction, there is formed a fiber of sea-islands structure comprising said high-melting polyvinyl alcohol type polymer (A) as the sea component and said low-melting water-soluble polymer (B) as the islands component. In this fiber, at least part of the islands component is present in a fiber zone ranging from the fiber surface to 2 mu m inside and the fiber surface contains substantially no islands component. This fiber ordinarily shows the performance of the matrix phase, i.e. the performance of a high-melting polyvinyl alcohol fiber; however, when the fiber is pressurized at high temperatures, the low-melting polymer (the islands component) is pushed out onto the fiber surface and there occurs heat bonding between fibers. Owing to this property of the fiber, a nonwoven fabric can be produced advantageously from the fiber.</p> |
申请公布号 |
EP0648871(B1) |
申请公布日期 |
1998.12.09 |
申请号 |
EP19940116014 |
申请日期 |
1994.10.11 |
申请人 |
KURARAY CO., LTD. |
发明人 |
OHMORY, AKIO;SANO, TOMOYUKI;SATOH, MASAHIRO;NARAMURA, SYUNPEI;KOBAYASHI, SATORU;SEKIYA, YOSUKE |
分类号 |
D01F8/10;D04H1/54;(IPC1-7):D01F8/10 |
主分类号 |
D01F8/10 |
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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