A process of preparing non-woven fabric used in repairing water suply pipe and drainpipe

摘要

PURPOSE: A manufacturing method of non-woven fabric for repairing a water supplying pipe and a drain pipe is provided. The non-woven fabric is characterized by having many more confounded part of short fibers, using the confound parts as junction parts and preventing deterioration of mechanical properties in forming. CONSTITUTION: A manufacturing method of non-woven fabric for repairing a water supplying pipe and a drain pipe is as follows: controlling needle density of a needle punching machine differently in a width direction of the non-woven fabric; and arranging many more confounded part(1a) of short fiber and small confounded part(1b) of the short fiber alternately.