PIPE FOR RENEWING AND REPAIRING EXISTING PIPELINE AND TECHNIQUE FOR RENEWING AND REPAIRING EXISTING PIPELINE

摘要

PROBLEM TO BE SOLVED: To easily prevent deformation with the lapse of time for a synthetic resin pipe inserted into an existing pipeline and to secure the sufficient opening diameter of the inserted pipe for a long period and also to stick and fix the existing pipeline and the inserted pipe strongly and economically in the case of performing renewal and repair of the existing pipeline by inserting the synthetic resin pipe into the existing pipeline and forming a new pipe in the inside of this conduit. ;SOLUTION: A synthetic resin pipe 1 inserted into an existing pipeline is formed of a pipe 10 made of nylon having high strength and high elasticity and moreover thickness (d) of the pipe is so thin as to enable deformation of diameter reduction without heating. Thereby, the pipe 10 made of nylon can make deformation of diameter reduction in an unheated state without performing deformation by heating at the time of insertion into the existing pipeline. The pipe 10 made of nylon which is inserted into the existing pipeline, restores a shape by its own exertions by means of its high elastic characteristics and adheres to the inner face of the existing pipeline. Thereafter, the recessed part of a spiral groove 1a formed on the outer peripheral face of the pipe 10 made of nylon is utilized and an adhesive is fluidized in the spiral groove 1a and an adhesive layer is formed in the inside of the above- mentioned recessed part and the pipe 10 made of nylon is stuck and fixed on the inner face of the above-mentioned pipeline.;COPYRIGHT: (C)2000,JPO