| 发明名称 | Method for producing long fiber nonwoven fabric | ||
| 摘要 | A method for producing a long fiber nonwoven fabric includes (a) melting resin containing polyphenylene sulfide as main component, discharging it from a spinneret, solidifying resulting filaments by cooling and stretching the filaments by pulling them out of an ejector at a spinning speed of 3,000 m/min or more while heat-treating as the filaments travel to the ejector outlet to provide a long fiber; (b) collecting the long fiber on a moving net to form a nonwoven web; and (c) subjecting the nonwoven web to thermal bonding. | ||
| 申请公布号 | US9181637(B2) | 申请公布日期 | 2015.11.10 |
| 申请号 | US201013513934 | 申请日期 | 2010.12.06 |
| 申请人 | Toray Industries, Inc. | 发明人 | Nakano Yohei;Yakake Yoshikazu |
| 分类号 | B29C47/88;D01F6/76;D01D5/098;D04H3/00 | 主分类号 | B29C47/88 |
| 代理机构 | DLA Piper LLP (US) | 代理人 | DLA Piper LLP (US) |
| 主权项 | 1. A method of producing a long fiber nonwoven fabric comprising steps (a) to (c) in sequence: (a) melting resin containing polyphenylene sulfide as main component, discharging it from a spinneret, solidifying resulting filaments by cooling, and stretching the filaments by pulling them out of an ejector at a spinning speed of 3,000 m/min or more while heat-treating as the filaments travel to the ejector outlet to provide a long fiber; (b) collecting the long fiber on a moving net to form a nonwoven web; and (c) subjecting the nonwoven web to thermal bonding; wherein the heat treating in step (a) is performed by supplying heated compressed air from an ejector, and the heated compressed air from the ejector in step (a) has a temperature of 100° C. or more and lower than the melting point of the resin containing polyphenylene sulfide as a main component. | ||
| 地址 | JP | ||