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Title:
PRODUCTION METHOD FOR NONWOVEN FABRIC FOR LIQUID-PERMEABLE SURFACE SHEET OF ABSORBENT ARTICLE
Document Type and Number:
WIPO Patent Application WO/2017/002627
Kind Code:
A1
Abstract:
The present invention provides a production method for a nonwoven fabric, said production method making it possible to obtain a nonwoven fabric that maintains liquid permeability and that has better cushioning properties and a better feel. This production method for a nonwoven fabric for a liquid-permeable surface sheet of an absorbent article comprises an opening formation step in which an opening is formed in a protruding section by a perforation pin comprising an insertion section formed so as to taper toward the tip of said perforation pin, a shank section that supports the insertion section, and a protrusion (burr) control section formed so as to have a narrowed shape between the insertion section and the shank section. In the opening formation step, the insertion section and the protrusion control section of the perforation pin are inserted through the protruding section from a non-skin contact side surface toward a skin contact side surface of the protruding section, the insertion section and the protrusion control section are subsequently withdrawn from the protruding section from the skin contact side surface toward the non-skin contact side surface of the protruding section, and an opening is thereby formed in the protruding section while protrusions (burrs) generated on the skin contact side surface of the protruding section when the perforation pin was inserted therethrough are drawn in toward the non-skin contact side surface of the protruding section by the protrusion control section.

Inventors:
KIMURA, Akihiro (1531-7 Wadahama, Toyohama-cho, Kanonji-sh, Kagawa 02, 〒7691602, JP)
DETANI, Ko (1531-7 Wadahama, Toyohama-cho, Kanonji-sh, Kagawa 02, 〒7691602, JP)
OBA, Kenji (1531-7 Wadahama, Toyohama-cho, Kanonji-sh, Kagawa 02, 〒7691602, JP)
KURITA, Noritomo (1531-7 Wadahama, Toyohama-cho, Kanonji-sh, Kagawa 02, 〒7691602, JP)
Application Number:
JP2016/067835
Publication Date:
January 05, 2017
Filing Date:
June 15, 2016
Export Citation:
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Assignee:
UNICHARM CORPORATION (182 Shimobun, Kinsei-cho Shikokuchuo-sh, Ehime 11, 〒7990111, JP)
International Classes:
D04H13/00; A41B13/04
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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