Invention Grant
- Patent Title: Polypropylene nonwoven fabric and use thereof
- Patent Title (中): 聚丙烯无纺布及其用途
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Application No.: US12181937Application Date: 2008-07-29
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Publication No.: US07674734B2Publication Date: 2010-03-09
- Inventor: Kenichi Suzuki , Akio Matsubara , Shigeyuki Motomura
- Applicant: Kenichi Suzuki , Akio Matsubara , Shigeyuki Motomura
- Applicant Address: JP Tokyo
- Assignee: Mitsui Chemicals, Inc.
- Current Assignee: Mitsui Chemicals, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Turocy & Watson, LLP
- Main IPC: D04H3/16
- IPC: D04H3/16 ; D04H3/00 ; C08L23/00 ; A61F13/15

Abstract:
A polypropylene based nonwoven fabric is excellent in surface appearance and stretch properties and exhibits a small residual strain and excellent adhesiveness to polyolefins. The nonwoven fabric is obtained by forming a polypropylene resin composition comprising 1 to 40 weight parts of (i) an isotactic polypropylene, and 60 to 99 weight parts of (ii) a propylene/ethylene/α-olefin copolymer obtained by copolymerizing 45 to 89 mole % of propylene, 10 to 25 mole % of ethylene and the balance of α-olefin having 4 to 20 carbon atoms (with the proviso that the copolymerized amount of the α-olefin having 4 to 20 carbon atoms does not exceed 30 mole %), characterized by a small residual strain after stretching at a stretch ratio of 150%. The nonwoven fabric can be effectively used as sanitary materials or the like by virtue of its characteristics including stretch properties.
Public/Granted literature
- US20080287027A1 POLYPROPYLENE NONWOVEN FABRIC AND USE THEREOF Public/Granted day:2008-11-20
Information query
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