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Patent Searching and Data

Document Type and Number:
Japanese Patent JP2006014536
Kind Code:

To provide a low-cost pipe joint for ensuring a required water stop performance for a long time, without increasing the quantity of a nonwoven fabric comprising a water expanded fiber, eliminating a dedicated clamp tool and the application of a silicon oil, when the pipe joint is attached to the pipe even if an outside diameter of a pipe becomes large, facilitating a work for attaching the pipe joint to the pipe, and eliminating an outflow of the gelled nonwoven fabric from a junction of the pipe joint to the outside regardless of a fluctuation of a clearance between the pipe and pipe joint bodies and a fluctuation of a torque for attaching the pipe joint to the pipe, when water enters.

A pipe joint 1 covers the outer circumference of a connection of the pipe, and the pipe joint 1 has the pipe joint bodies 4, 4, and a water-absorbing layer 5 provided on the inner faces of the pipe joint bodies 4, 4. The water-absorbing layer 5 comprises the water-absorbing nonwoven fabric, having the basis weight quantity of 200-400 g/m2 and a moisture content of the water expanded fiber of 50-70%.

Wada, Naoto
Application Number:
Publication Date:
January 12, 2006
Filing Date:
June 29, 2004
Export Citation:
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International Classes:
H02G9/06; F16L21/02; H02G1/06