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May 31, 2018

Colored plastic PVC products will fade due to many factors. The discoloration of colored plastic  products is related to the light resistance, oxygen resistance, heat resistance, acid resistance of color powder as well as the properties of the resin used.


May 31, 2018

The degree of plasticization of PVC hard goods is between 60% and 70%. Excessive or too low degrees of plasticization will affect the physical and other properties of the products. Judging whether the processing technology is suitable and the plasticizing degree of the...

May 30, 2018

        As a kind of additive, modifier or filler, talcum powder is widely used in many chemical industries. It has obvious enhancement in the modified application of plastic and rubber. It can improve the tensile strength, impact property, creep resistance, heat resis...

May 29, 2018

Cracking, including surface filamentary cracks, microcracks, top white, cracking and risk of injury caused by die and channel adhesion, demoulding and application cracking according to cracking time. Description: injection molded parts break when ejected, or easy to br...

May 21, 2018

When the plastic products are colored by dry powder or color masterbatch, the color change may occur, thus affecting the quality of the product.

Discoloration may be caused by the following reasons:

1) oxidative degradation of matrix resin during high temperature molding...

May 16, 2018


        The key part of PVC plastic processing is molding. Various forms of PVC plastics, such as powder and granules, are made into various products of desired shape. There are more than thirty kinds of molding methods. The selection is mainly de...

May 15, 2018

Calcium stearate,white powder, calcium content: 6.4%-7.0%, free acid is less than 0.1%, volatile content is less than 2%. Melting point is 149-155 degrees. Insoluble in water and most solvents. When heated, it is slightly soluble in ethanol, aromatic compounds, chlorin...

May 14, 2018

PVC material, because of low price, is inborn with anti-inflammatory properties, strong and strong, good anti chemical ability, the shrinkage rate is 0.2-0.6%, products in electrical appliances, machinery, construction, daily necessities, toys, packaging, the character...

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The role of the three functional zones of the PVC extruder

March 18, 2019

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