Title:
NONWOVEN-FABRIC SHEET AND PROCESS FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2011/102544
Kind Code:
A1
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 70º 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.
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Inventors:
UEMATSU, Katsuhiro (1531-7 Wadahama, Toyohama-cho, Kanonji-sh, Kagawa 02, 〒7691602, JP)
植松 克裕 (〒02 香川県観音寺市豊浜町和田浜１５３１－７ユニ・チャーム株式会社テクニカルセンター内 Kagawa, 〒7691602, JP)
OBA, Toru (1531-7 Wadahama, Toyohama-cho, Kanonji-sh, Kagawa 02, 〒7691602, JP)
植松 克裕 (〒02 香川県観音寺市豊浜町和田浜１５３１－７ユニ・チャーム株式会社テクニカルセンター内 Kagawa, 〒7691602, JP)
OBA, Toru (1531-7 Wadahama, Toyohama-cho, Kanonji-sh, Kagawa 02, 〒7691602, JP)
Application Number:
JP2011/054208
Publication Date:
August 25, 2011
Filing Date:
February 18, 2011
Export Citation:
Assignee:
UNICHARM CORPORATION (182 Shimobun, Kinsei-cho Shikokuchuo-sh, Ehime 11, 〒7990111, JP)
ユニ・チャーム株式会社 (〒11 愛媛県四国中央市金生町下分１８２番地 Ehime, 〒7990111, JP)
UEMATSU, Katsuhiro (1531-7 Wadahama, Toyohama-cho, Kanonji-sh, Kagawa 02, 〒7691602, JP)
植松 克裕 (〒02 香川県観音寺市豊浜町和田浜１５３１－７ユニ・チャーム株式会社テクニカルセンター内 Kagawa, 〒7691602, JP)
ユニ・チャーム株式会社 (〒11 愛媛県四国中央市金生町下分１８２番地 Ehime, 〒7990111, JP)
UEMATSU, Katsuhiro (1531-7 Wadahama, Toyohama-cho, Kanonji-sh, Kagawa 02, 〒7691602, JP)
植松 克裕 (〒02 香川県観音寺市豊浜町和田浜１５３１－７ユニ・チャーム株式会社テクニカルセンター内 Kagawa, 〒7691602, JP)
International Classes:
D04H1/54; A61F13/511
Attorney, Agent or Firm:
AOKI, Atsushi et al. (SEIWA PATENT & LAW, Toranomon 37 Mori Bldg. 5-1, Toranomon 3-chome, Minato-k, Tokyo 23, 〒1058423, JP)
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Claims: