UNDERLAYER CUSHIONING SHEET, AND WATERPROOF STRUCTURE

Japanese Patent JP2016132946

A

PROBLEM TO BE SOLVED: To provide an underlayer cushioning sheet that accelerates curing of a coat and curtails work period, without affecting ease of coating work, when implementing waterproofing work using a single-component (moisture-curing) waterproof material.SOLUTION: An underlayer cushioning sheet is provided that is installed on a surface of a substrate 20, and a waterproof coat is formed on the underlayer cushioning sheet. The underlayer cushioning sheet includes a cushioning layer 12 having an overlapped surface 12a, and a curing promotion layer 11 having a coat formation surface 11a on a side opposite the overlapped surface 12a. The coat formation surface 11a of the curing promotion layer 11 has a waterproof coat of a polyurethane resin, formed by applying a single-component liquid waterproof material. The curing promotion layer 11 contains a reactive material that reacts with the liquid waterproof material, and either [1] or [2] below applies to the reactive material: [1] containing a functional group that reacts with isocyanate contained in the liquid waterproof material; or [2] forming a functional group that reacts with a component of the liquid waterproof material, by reacting with a latent curing agent contained in the liquid waterproof material.SELECTED DRAWING: Figure 1

YOKOCHI YASUHIRO
ODA URARA
MASUDA RUI
KUMAGAI KENJI

JP2015009353A

July 25, 2016

January 21, 2015

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DYFLEX CORP

E04D5/10; B32B27/00; B32B27/40

JPH0941584A	1997-02-10
JP2005146126A	2005-06-09
JP2000265121A	2000-09-26
JPH07138536A	1995-05-30
JP2005013990A	2005-01-20

Masatake Shiga
Tadashi Takahashi
Suzuki Mitsuyoshi
Yasuhiko Murayama

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