Madhavachar Rangnekadr's Blog – December 2019 Archive (2)

BLACK SPOTS OF COMMON PROBLEMS IN INJECTION MOLDING

What is a black spot? Black spot refers to the black spots or stripes on the molded products.

Causes of black spots on injection molded parts:

1. Resin decomposition

As plastic is a chemical, it will decompose gradually when it is heated above the melting point. The higher the temperature, the longer the time and the faster the decomposition. In addition, there are some areas in the barrel that are easy to retain resin, such as check check valve and thread.…

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Added by Madhavachar Rangnekadr on December 13, 2019 at 2:41am — No Comments

The Basic Knowledge Of Rapid Prototyping Services

Start Prototyping is professional Rapid Prototyping Service,Quick Prototype Manufacturing,Additive Manufacturing and Low Volume Manufacturing Service factory from china.

Today we will talking about the basic knowledge of …

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Added by Madhavachar Rangnekadr on December 7, 2019 at 6:37am — No Comments

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