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September 4, 2019

4 stages determine the quality of injection molded products
 

The injection molding process of plastic parts mainly includes four stages of filling - holding pressure - cooling - demoulding. These four stages are a complete continuous process, which directly determines...

September 2, 2019

Several factors affecting the brightness of cable pvc compound materials
 

The PVC cable material is a granule prepared by adding a stabilizer such as a stabilizer, a whitening agent, a plasticizer, an inorganic filler such as calcium carbonate, an auxiliary agent and a...

September 2, 2019

Why does the color of plastic products change insensibly?
 

When coloring plastic products by means of toner or masterbatch, color change may occur, which may affect product quality. Possible causes of discoloration:


(1) oxidative degradation of the matrix resin during...

August 2, 2019

Processing problems and solutions for PVC transparent profiles extrusion production
 

PVC transparent extrusion progfile is one of the main varieties of rigid PVC. Usually, it is produced by cone-type twin-screw extrusion when it is directly produced with pvc resin powd...

July 31, 2019

Factors affecting the weather resistance of PVC plastic windows and measures to prevent aging

Polyvinyl chloride (PVC) plastic window has many advantages and characteristics, it is more resistant to corrosion than wooden windows and steel windows; it has better sealing,...

July 31, 2019

Calcium carbonate "alkalinity" can affect the brittleness and yellowing of PVC. What is the reason?
 

Calcium carbonate is widely used as an important filler in PVC pipe processing and production. However, many manufacturers produce PVC with different degrees of yellowi...

July 26, 2019

The role of the three functional zones of the PVC extruder
 

The melting temperature and degradation temperature of PVC are relatively close, and good plasticization is required to prevent degradation of the melt. Therefore, generally according to the work function, wit...

July 23, 2019

Explanation of the "plasticity" of the production process of PVC products

1. The effect of plasticization on product performance:
 

The performance of PVC products is closely related to the degree of plasticization. The plasticization degree is not good, the products are...

July 17, 2019

The secret of PVC toughening agent is here
 

There are many factors that determine the impact resistance of PVC products, including the molecular weight of PVC, the surface condition of the material, the thickness of the material, the temperature of use, the type and st...

July 16, 2019

Research of transparent PVC compound/granule/pellet production and formulation 
 

1 Introduction

The large-scale production of transparent compound/granule/pellet began in the early 1990s, and the production of transparent compound/granule/pellet in China began in the la...

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The role of the three functional zones of the PVC extruder

March 18, 2019

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