Title:
不織布シートおよびその製造方法
Document Type and Number:
Japanese Patent JP5538943
Kind Code:
B2
Abstract:
Provided are a nonwoven-fabric sheet having a high liquid permeation rate and a process for producing the sheet. The nonwoven-fabric sheet comprises two layers, a first layer (4) and a second layer (5), and is characterized in that the first layer (4) has a plurality of ridges (2) and grooves (3) which extend in parallel in the lengthwise direction, that the first layer comprises heat-fusible fibers and the second layer comprises crimped fibers, and that the sheet has an average fiber angle of 70 or less in a cross-section parallel to the lengthwise direction. The nonwoven-fabric sheet can be produced by stacking a web comprising fibers having latent crimping properties and a web comprising heat-fusible fibers, ejecting a fluid from a plurality of nozzles arranged in the width direction, while conveying the stack, to form ridges (2) and grooves (3), heating the stack using a means that reduces resistance against the crimping properties of the fibers having latent crimping properties, thereby crimping the fibers having latent crimping properties, and then fusion-bonding the heat-fusible fibers.
Inventors:
Uematsu Katsuhiro
Toru Ohba
Satoshi Mizutani
Toru Ohba
Satoshi Mizutani
Application Number:
JP2010035387A
Publication Date:
July 02, 2014
Filing Date:
February 19, 2010
Export Citation:
Assignee:
UNI-CHARM CO.,LTD.
International Classes:
D04H1/559; A61F13/15; A61F13/49; A61F13/511; D04H1/4391; D04H1/541
Domestic Patent References:
| JP2009185408A |
Foreign References:
| WO2009001590A1 |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Atsushi Ebiya
Satoshi Deno
Hiroyuki Onoda
Yuichi Morimoto
Takashi Ishida
Tetsuji Koga
Atsushi Ebiya
Satoshi Deno
Hiroyuki Onoda
Yuichi Morimoto
Previous Patent: JPS5538942
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