Invention Grant
- Patent Title: Spunbonded nonwoven fabrics
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Application No.: US13984383Application Date: 2012-02-15
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Publication No.: US09693912B2Publication Date: 2017-07-04
- Inventor: Akio Matsubara , Kenichi Suzuki , Shingo Kajiyama
- Applicant: Akio Matsubara , Kenichi Suzuki , Shingo Kajiyama
- Applicant Address: JP Tokyo
- Assignee: MITSUI CHEMICALS, INC.
- Current Assignee: MITSUI CHEMICALS, INC.
- Current Assignee Address: JP Tokyo
- Agency: Buchanan, Ingersoll & Rooney PC
- Priority: JP2011-029917 20110215
- International Application: PCT/JP2012/053575 WO 20120215
- International Announcement: WO2012/111723 WO 20120823
- Main IPC: A61F13/15
- IPC: A61F13/15 ; A61F13/538 ; D04H3/007 ; D04H3/018 ; D04H3/10 ; D04H3/14 ; D01D5/24 ; D01F6/06 ; B32B5/02 ; B32B5/26 ; D04H3/16 ; D04H1/4391 ; A61F13/49

Abstract:
An object of the invention is to obtain spunbonded nonwoven fabrics including thin hollow fibers which have excellent lightweight properties and uniformity as well as exhibit high strength and flexibility. An aspect of the invention is directed to a spunbonded nonwoven fabric including hollow fibers of a propylene polymer, the hollow fibers satisfying the following requirements (a) to (c): (a) the C-axis orientation is at least 0.85, (b) the average fiber diameter is 5 to 20 μm, and (c) the hollowness is 5 to 30%.
Public/Granted literature
- US20130317469A1 SPUNBONDED NONWOVEN FABRICS Public/Granted day:2013-11-28
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