PVC Pipe Manufacturing Process Flow Chart

In the manufacturing process, various steps are taken as follows:

#1. Extrusion

PVC uncompounded resin, unlike some other thermoplastics, is not suitable for direct processing. To confer the required processing and end instability, it is necessary to mix additives with the PVC resin. Following are some of the additives which are generally used for the manufacture of rigid PVC pipes. Plasticizers: The common plasticizer in use is DOP, DOTP, DBP, DOA.

Plasticizers: The common plasticizer in use are DOP, DOTP, DBP, DOA, DEP, etc.

Stabilizers: Ca-Zinc stabilizer,

Fillers: Fillers are also used for producing the special quality product (e.g. calcined clay is used to improve the electrical properties of cable compounds).

Before the extrusion operation, PVC resin is to be compounded with plasticizers, stabilizers, lubricants, and fillers to improve processability and improve the ensure stability. PVC resin is compounded with other ingredients in a high-speed mixer.

The compound resin is fed to the double screw extruder where the inserts and die body for the required pipe diameter are fitted. The PVC compounds are then passed through a heated chamber and they get melted under the compression of the screw and temperature of the barrel. The marking on the pipe is done at the time of extrusion.

#2. Sizing

The pipes coming out from the extruder is cooled in the sizing operation. There are basically two types of sizing used for manufacturing of pipes. They are (i) Pressure sizing & (ii) Vacuum sizing.

#3. Traction

The next operation needed after sizing is traction. The tube traction unit is required for continuous haulage of the pipes being extruded by the extruder. Cutting: The last operation needed is cutting. There are basically two cutting techniques for rigid PVC pipes viz. manual and automatic. The pipes are then tested for ISI marks and are ready for dispatch.

#4. Cutting

The last operation needed is cutting. There are basically two cutting techniques for rigid PVC pipes viz. manual and automatic. The pipes are then tested for ISI marks.



ZHEJIANGJIAAO ENPROTECH STOCK CO.,LTD

ADD: No.1 Economic & Development Zone,Tongxiang, Zhejiang, China 

Contact: Gray Li

Gray LI Mobile:0086-15888317761

Contact: Joey Deng

Joey Deng Mobile:0086-13763320723

TEL: 86-573-88623097 

FAX: 86-573-88623119 

E-mail: inquiry@jiaaohuanbao.com