发明名称 |
HITZEBESTAENDIGE, EINE HOHE REISSDEHNUNG AUFWEISENDE, NICHTGEWOBENE STOFFBAHN. |
摘要 |
<p>Disclosed is a nonwoven sheet consisting of undrawn polyethylene terephthalate filaments of which an outer layer portion of a filament section has a higher orientation and higher crystallization than a center of the filament section, and nonwoven sheets produced by using the above-mentioned nonwoven sheet as an intermediate goods. The above-mentioned undrawn polyethylene terephthalate filament are those in which the filaments have an elongation at breakage of at least 100%, a shrinkage in boiling water of at least 15%, the filament section is a circular section having a radius R, and the average refractive index n PARALLEL (0) of the central portion of the filament section and the average refractive index n PARALLEL (0.8) of the portion apart by 0.8 R from the center satisfy the following requirements: n PARALLEL (0)</=1.640 and [n PARALLEL (0.8)-n PARALLEL (0)]>/=6x10-3. A nonwoven sheet produced by heat-press-bonding or mechanically entangling a web produced from the above mentioned filament, a nonwoven sheet produced by heat setting the former nonwoven sheet, and a nonwoven sheet produced by heat shrinking after heat-press-bonding and mechanically entangling the former web have an improved heat deterioration and other specified properties. Therefore, the above mentioned nonwoven sheets have a superior ability when used in field requiring heat shrinkage, a field requiring heat molding, or a field for felt like goods, respectively.</p> |
申请公布号 |
DE3586136(T2) |
申请公布日期 |
1993.01.14 |
申请号 |
DE19853586136T |
申请日期 |
1985.03.12 |
申请人 |
ASAHI KASEI KOGYO K.K., OSAKA, JP |
发明人 |
NIKI, AKIRA, MINAMIKAWACHI-GUN OSAKA, JP;IWASAKI, HIROFUMI, ASHIYA-SHI HYOGO-KEN, JP |
分类号 |
D04H3/14;D04H3/16;(IPC1-7):D04H3/16 |
主分类号 |
D04H3/14 |
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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