Title:
不織ウェブダイおよびそれによって製造された不織ウェブ
Document Type and Number:
Japanese Patent JP2005534817
Kind Code:
A
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.
Inventors:
Stanley Sea Ericsson
James Sea Blister
Michael G. Schwartz
Patrick Jay Sager
James Sea Blister
Michael G. Schwartz
Patrick Jay Sager
Application Number:
JP2004515695A
Publication Date:
November 17, 2005
Filing Date:
May 20, 2003
Export Citation:
Assignee:
3M INNOVATIVE PROPERTIES COMPANY
International Classes:
B29C48/05; B29C48/30; B29C48/345; D01D5/098; D04H1/56; D04H3/02; D04H3/14; D04H3/16; (IPC1-7): D04H3/16
Domestic Patent References:
| JPS6123284B2 | 1986-06-05 | |||
| JP2004527671A | 2004-09-09 | |||
| JP2003502524A | 2003-01-21 | |||
| JP2002506132A | 2002-02-26 | |||
| JPH0949111A | 1997-02-18 | |||
| JP2743080B2 | 1998-04-22 | |||
| JP2656823B2 | 1997-09-24 |
Foreign References:
| EP0822282A2 | 1998-02-04 | |||
| US5260003A | 1993-11-09 | |||
| US4889476A | 1989-12-26 | |||
| DE2933025A1 | 1981-03-26 |
Attorney, Agent or Firm:
Hiroshi Yamazaki
Yasushi Ohata
Tadataka Omori
Yasushi Ohata
Tadataka Omori