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Title:
WATER-SOLUBLE MALE MOLDED HOOK-AND-LOOP FASTENER AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2021/172566
Kind Code:
A1
Abstract:
This water-soluble male molded hook-and-loop fastener satisfies requirements (1) to (3) and has a substrate and a plurality of male engagement elements that protrude from the substrate surface. (1) The plurality of male engagement elements are aligned. The engagement elements each have a shape which rises from the substrate surface and which curves, at a midpoint of the element, in the direction of alignment. The tip of the element is oriented in a direction that approaches the substrate surface. Alternately, the engagement elements each have a shape which rises from the substrate surface, which branches forwards or backwards, at a midpoint of the element, in the direction of alignment so as to curve in the direction of alignment. The tip of a branched element is oriented in a direction that approaches the substrate surface. (2) The substrate and the male engagement elements each comprise a mixture of poly(vinyl alcohol), a polymer based on a polyhydric alcohol or ethylene oxide, and layered inorganic particles, and the amount of the polymer based on a polyhydric alcohol or ethylene oxide is 5-30 parts by mass and the amount of the layered inorganic particles is 3-20 parts by mass, each relative to 100 parts by mass of the poly(vinyl alcohol). (3) The poly(vinyl alcohol) has a degree of polymerization of 300-700 and a degree of saponification of 60-80 mol%.

Inventors:
KOGA NOBUHIRO (JP)
KAMADA HIDEKI (JP)
ONO SATORU (JP)
FUJISAWA YOSHIKATSU (JP)
Application Number:
PCT/JP2021/007542
Publication Date:
September 02, 2021
Filing Date:
February 26, 2021
Export Citation:
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Assignee:
KURARAY FASTENING CO LTD (JP)
KURARAY CO (JP)
International Classes:
A44B18/00; A61F13/15; A61F13/62; C08K3/34; C08K9/04; C08L29/04; C08L71/02
Domestic Patent References:
WO2019159756A12019-08-22
Foreign References:
JPH09313218A1997-12-09
JPH06220287A1994-08-09
JPH11181306A1999-07-06
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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