Invention Grant
- Patent Title: Nonwoven web forming apparatus
- Patent Title (中): 无纺布成网设备
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Application No.: US11763505Application Date: 2007-06-15
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Publication No.: US07690902B2Publication Date: 2010-04-06
- Inventor: Stanley C. Erickson , James C. Breister , Michael G. Schwartz , Patrick J. Sager
- Applicant: Stanley C. Erickson , James C. Breister , Michael G. Schwartz , Patrick J. Sager
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN St. Paul
- Agent Karl G. Hanson
- Main IPC: B29B9/06
- IPC: B29B9/06 ; D01D5/08 ; D04H3/00

Abstract:
Melt blown or spun bond nonwoven webs are formed by flowing fiber-forming material through a die cavity having a substantially uniform residence time and then through a plurality of orifices to form filaments, using air or other fluid to attenuate the filaments into fibers and collecting the attenuated fibers as a nonwoven web. Each die orifice receives a fiber-forming material stream having a similar thermal history. The physical or chemical properties of the nonwoven web fibers such as their average molecular weight and polydispersity can be made more uniform. Wide nonwoven webs can be formed by arranging a plurality of such die cavities in a side-by-side relationship. Thicker or multilayered nonwoven webs can be formed by arranging a plurality of such die cavities atop one another.
Public/Granted literature
- US20070237849A1 NONWOVEN WEB FORMING APPARATUS Public/Granted day:2007-10-11
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