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April 26, 2019

Method for eliminating flashing of PVC products

1. The cause of the flash
1-1 mold parting surface (PL) sliding surface does not match. 1-2 Injection pressure is too high; 1-3 Injection machine offset; 1-4 Locking force is insufficient


2. Associated knowledge
2-1 Par...

April 15, 2019

Performance comparison between PVC-M pipe and PVC-U pipe

PVC-M pipe has obvious advantages over PVC-U pipe in terms of safety, convenience and economy. It can effectively resist point load and uneven settlement of foundation, reduce the demanding requirements of constru...

April 12, 2019

Analysis and solution of the causes of warpage deformation of injection molding products

The deformation, bending and twisting of the product are mainly caused by the fact that the shrinkage rate of the flow direction during the molding of the plastic is larger than tha...

April 11, 2019

Effect of plastic structure on shrinkage of products
(1) Thick-walled plastic parts have higher shrinkage than thin-walled plastic parts (but most plastic 1mm thin-walled parts have a larger shrinkage than 2mm, which is due to the increased resistance of the melt in th...

April 3, 2019

Cause analysis and solution for bubble generation in plastic products

Plastic products will generate bubbles after molding, forming pores on the plastic parts. Bubbles are defects that form a small volume or a series of pores inside the plastic parts; the dark bubbles a...

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The role of the three functional zones of the PVC extruder

March 18, 2019

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