Title:
METHOD FOR PRODUCING STRETCHABLE LAMINATE
Document Type and Number:
WIPO Patent Application WO/2019/151370
Kind Code:
A1
Abstract:
A method for producing a stretchable laminate is provided by which a stretchable laminate having a good touch and being excellent in terms of stress during elongation can be obtained and in which a stretch member can be coated using an ordinary hot-melt adhesive applicator. The method, which is for producing a stretchable laminate, is characterized by comprising: step 1, in which a molten hot-melt composition is applied to obtain a hot-melt composition layer; step 2, in which first nonwoven fabric, the hot-melt composition layer in a stretched state, and second nonwoven fabric are stacked in this order; and step 3, in which the hot-melt composition layer in the stretched state is bonded to the first nonwoven fabric and the second nonwoven fabric by hot-melt adhesive bonding and/or ultrasonic fusion bonding. The production method is further characterized in that the hot-melt composition comprises a hydrogenated styrene-based block copolymer (A) and a plasticizer (B), that the hydrogenated styrene-based block copolymer (A) and the plasticizer (B) are contained in amounts of 55-70 mass% and 5-25 mass%, respectively, per 100 mass% the hot-melt composition, that the hydrogenated styrene-based block copolymer (A) is a styrene-ethylene-butylene-styrene copolymer and/or a styrene-ethylene-butylene/styrene-styrene copolymer, and that the hot-melt composition has a melt viscosity at 180°C of 10,000-30,000 mPa∙s.
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Inventors:
SOMEYA YU (JP)
KOSHIJIMA MIWA (JP)
HASHIMOTO TAKAYUKI (JP)
KOSHIJIMA MIWA (JP)
HASHIMOTO TAKAYUKI (JP)
Application Number:
PCT/JP2019/003295
Publication Date:
August 08, 2019
Filing Date:
January 31, 2019
Export Citation:
Assignee:
SEKISUI FULLER CO LTD (JP)
ZUIKO CORP (JP)
NAGASE & CO LTD (JP)
ZUIKO CORP (JP)
NAGASE & CO LTD (JP)
International Classes:
B32B5/26; D06M17/04
Foreign References:
| JP2017534481A | 2017-11-24 | |||
| JP2013500359A | 2013-01-07 | |||
| JPH0978431A | 1997-03-25 |
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
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