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.…
According to a new report published by Allied Market Research, titled, "Advanced Phase Change Materials Market: Global Opportunity Analysis and Industry Forecast, 2014-2022," the global market is projected to reach $2,434 million by 2022 from $691 million in 2015, growing at a CAGR of 19.8% from 2016 to 2022. Building & construction segment occupied major share of the total market in 2015.