A WATER PIPE OF DURABILITY

摘要

A nontoxic water pipe with durability is provided to increase the stiffness and the bending rigidity of an outer layer favorably and to connect the water pipes easily by forming the outer layer by using the polyvinyl chloride(PVC) material. A nontoxic water pipe with durability(100) comprises an inner layer(10) and an outer layer(20). The inner layer is extruded and formed by inserting 125~145 weight% of nano calcium carbonate and 100 weight% of polyethylene(PE) resin. The outer layer is extruded and formed by using a polyvinyl chloride(PVC) resin. The nano calcium carbonate is formed closely to remove the difference of the thermal contraction for the PE resin and the PVC resin.