Phenol ketone products

Plastic rubber

Current Location： Home > News > Chemical Knowledge > Manufacturing method and process of PVC pipe

[Chemical Knowledge]：Manufacturing method and process of PVC pipe

Read： 456 Time：12months ago Source：Transform the World with Simplicity

The manufacturing method
of PVC pipe
1. Introduction

PVC (polyvinyl chloride) pipe has been widely used in the field of chemical production raw materials because of its excellent corrosion resistance, high strength, light weight and easy processing. This article will introduce the manufacturing method of PVC pipe in detail.

2. Raw Material Preparation

1. PVC resin: As the main raw material, PVC resin with high molecular weight and high degree of polymerization should be selected to improve the strength and corrosion resistance of the pipe.
2. Stabilizer: In order to prevent PVC from decomposing during processing, stabilizers such as lead salts and organic tin need to be added.
3. Lubricant: In order to reduce the friction during processing and improve production efficiency, it is necessary to add lubricants, such as stearic acid and paraffin wax.
4. Filler: In order to improve some properties of the pipe, some fillers can be added, such as calcium carbonate, clay, etc.

3. mixing

PVC resin, stabilizer, lubricant, filler and other raw materials in a certain proportion into the high-speed mixer, fully mixed to ensure that all kinds of raw materials are evenly dispersed in the PVC resin.

4. extrusion molding

the mixed material into a single screw or twin screw extruder, through the extruder screw and barrel between the friction and shear force, the material heating, melting, plasticizing, and then through the mold extrusion molding, forming the required pipe.

5. cooling and shaping

extruded pipes are cooled and shaped by cooling water tanks or air cooling equipment, so that the pipes have a certain strength and hardness.

6. traction cutting

after cooling and shaping of the pipe by the traction device for traction, at the same time by the cutting device according to a certain length of cutting, forming a certain length of the finished pipe.

7. quality inspection

quality inspection of the finished pipe, including appearance quality, dimensional accuracy, mechanical properties, corrosion resistance and other aspects of the test, to ensure that the product meets the relevant standards and regulations.

8. packaging warehousing

inspection qualified pipe packaging, indicating product specifications, quantity, production date and other information, and then warehousing preservation.
Precautions for
9.

1. In the mixing process, the proportion of various raw materials should be strictly controlled to ensure stable product quality.
2. In the process of extrusion molding, the temperature, pressure and other parameters of the extruder should be controlled to avoid material decomposition and scorching.
3. During the cooling and shaping process, the temperature and water flow rate of the cooling water should be controlled to avoid problems such as deformation or cracking of the pipe.
4. During the traction cutting process, the traction speed and cutting length should be kept stable to ensure product quality.

10. Conclusion The manufacturing method of

PVC pipe includes the steps of raw material preparation, mixing, extrusion molding, cooling and shaping, traction cutting, quality inspection and packaging storage. In the manufacturing process, the process parameters should be strictly controlled to ensure that the product quality meets the relevant standards and regulations.

Previous： The manufacturing method and process of PP pipe.

Next： BOPP production and manufacturing methods and processes.

News Categories