Manufacturing method of PVC pipe for water supply or drain and PVC pipe for water supply or drain manufactured therefrom

摘要

In the present invention, the use of a heat stabilizer can be minimized, and tensile strength, drop impact strength, and hot working by using a PVC resin with a polymerization degree of 1200 to 1300 without using a plasticizer that degrades mechanical properties. It relates to a method of manufacturing a PVC pipe for water and sewage pipes having excellent fusion strength during thermal fusion as well as capable of forming a pipe having excellent strength and durability characteristics such as pressure creep, wherein PVC resin and additives are blended, and the PVC resin is liquid heat. Blending process comprising the step of preparing a first mixture by mixing in advance with a stabilizer; Extrusion step of melting and extruding the compound introduced from the hopper in an extruder; A molding process of forming the extruded melt into a pipe while passing through the die, and cooling the die by introducing an air cooling method; A cooling process of cooling the molded product formed into a pipe to maintain its shape; A take-up process to obtain a pipe to a desired thickness by controlling the degree of pulling of the formed pipe; And a cutting process of cutting the formed pipe to a desired length.