Title:
SHEET OF NONWOVEN FABRIC AND PROCESS FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2011/122512
Kind Code:
A1
Abstract:
Provided is a sheet of nonwoven fabric which has surface irregularities and is for use as the surface sheet or absorbent of, for example, a paper diaper, the shape of the surface irregularities being less apt to be changed by external pressure, etc. The sheet of nonwoven fabric has a machine direction (MD), a cross direction (CD), a thickness direction (TD) which are perpendicular to one another, and has an upper surface (A) and a lower surface (B) in the thickness direction. The upper surface has a plurality of protrusions (2) continuously extending, in parallel, in the cross direction and further has a plurality of recesses (3) that are located between the adjacent protrusions and extend in the cross direction. The sheet of nonwoven fabric comprises a first fibrous layer (4) and a second fibrous layer (5), the first and second layers being located on the upper-surface side and the lower-surface side, respectively. The first fibrous layer comprises heat-fusible fibers, and the second fibrous layer comprises coil-shaped three-dimensional crimp fibers. The coil-shaped three-dimensional crimp fibers of the second fibrous layer have been oriented mainly in the machine direction and have formed a network due to entanglement thereof without having been fused at the sites where the crimp fibers cross one another.
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:
JP2011/057511
Publication Date:
October 06, 2011
Filing Date:
March 22, 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; A61F13/53; D04H1/70
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)
Claims: