COVERING MATERIAL FOR DRAIN PIPE JOINT

Japanese Patent JP2017014769

A

PROBLEM TO BE SOLVED: To provide a covering material that facilitates covering, for covering an outer surface of a part of a drain pipe joint penetrating through a floor slab, the drain pipe joint being arranged to penetrate through the floor slab of a building and is made of a thermoplastic resin, thereby suppressing an increase in weight, preventing drainage noise to be conveyed through the floor slab, and preventing spreading of a flame and smoke at a time of fire to adjacent floors through the drain pipe joint.SOLUTION: A covering material for a drain pipe joint is formed as a cylindrical form simulating an outer surface form of a drain pipe joint 51, and comprises a first sound absorbing layer 13 made of a sponge material, a second sound absorbing layer 15 made of an assembly of inorganic fibers, and a waterproof and sound insulating skin layer, in this order starting from an inner side, and encloses a thermal expansion material 21 on at least one location in an axial direction along a circumference.SELECTED DRAWING: Figure 5

JP2004125056	SOUND INSULATION PIPING
WO/2004/101902	WATER RECYCLE SYSTEM

KOJIMA SEIZO
KAKO YOZO
OWARI MASANORI
IRAKO JUN

JP2015130989A

January 19, 2017

June 30, 2015

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KOJIMA SEISAKUSHO:KK
FURUKAWA TECHNO MAT CO LTD

E03C1/12; E03C1/122; F16L5/02; F16L5/04; F16L55/02

JP2011208474A	2011-10-20
JP2006218797A	2006-08-24
JP2007056537A	2007-03-08
JP2011099552A	2011-05-19
JP2006342908A	2006-12-21
JPH0739598A	1995-02-10
JP2003316364A	2003-11-07
JP2008063756A	2008-03-21
JP2001153294A	2001-06-08
JP2009264577A	2009-11-12

Okada International Patent Office

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