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

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manufacturing method
of pvc profile
1. overview of

pvc profile is a widely used chemical raw materials, because of its excellent physical and chemical properties, is widely used in construction, automotive, electronics, medical and other fields. This article will introduce the manufacturing method of PVC profile in detail.

2. Raw Material Preparation
The main raw material for
manufacturing PVC profiles is polyvinyl chloride resin (PVC resin), and auxiliary materials include stabilizers, lubricants, processing aids, fillers, etc. In the raw material preparation stage, it is necessary to accurately weigh the various raw materials according to the formula ratio and mix them thoroughly.

3. Mixing

Add the weighed raw materials into a high-speed mixer for high-speed stirring and mixing, so that the various raw materials are fully and evenly dispersed in the PVC resin. The mixing time is generally 5-10 minutes, and the specific time depends on the type of raw materials and the formula.

4. extrusion molding

After the mixing is completed, the mixture is added to the extruder, and the mixture is heated, plasticized and extruded by the screw and barrel of the extruder. In the extrusion process, it is necessary to adjust the parameters of the extruder according to the specifications and shape of the profile to ensure the quality and output of the profile.

5. cooling and setting

extruded profiles need to be cooled and set through the cooling and setting system to ensure the stability of its shape and size. Cooling and shaping are generally carried out by water cooling or air cooling.

6. traction cutting

After cooling and shaping the profile needs to be towed by the traction device to ensure the uniformity of its length and straightness. At the same time, it is necessary to cut the profile into small sections of a certain length according to requirements for easy transportation and use.

7. quality inspection

manufactured PVC profiles need to be quality inspection, including appearance quality, dimensional accuracy, physical properties and other aspects of the test. Unqualified products need to be reworked or scrapped to ensure product quality stability.

8. packaging warehousing

inspection qualified PVC profiles need to be packaged warehousing, generally using plastic bags or cartons for packaging, indicating specifications, quantity, production date and other information. Storage needs to be classified according to different specifications and types of storage, in order to facilitate management and use.
Precautions for
9.

In the manufacturing process of PVC profiles, the following matters need to be paid attention to:

1. Strictly control the quality and ratio of raw materials to ensure the stability and reliability of the product;
2. Regularly check the extruder, Cooling and shaping system, traction and cutting equipment and other key equipment to ensure the normal operation of the equipment;
3. Strengthen the quality control in the production process, timely discover and deal with unqualified products;
4. Keep the production environment clean and hygienic to avoid the impact of dust and debris on the product;
5. For different specifications and types of profiles, need to be manufactured and stored separately to avoid confusion and wrong use.

In short, the manufacture of PVC profiles requires strict control of raw materials, equipment, processes and other factors to ensure product quality stability and reliability. At the same time, it is necessary to strengthen the quality control and environmental health management in the production process to improve production efficiency and product quality.

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