In our last discussion, we talked about the main reasons for Silver Streaks and Bubbles in PC products during production and now we will tell you how to get rid of that problem so you will get a perfect shining PC final product. 

1. Improve injection pressure, injection time and material volume. When you increase the Injection pressure and time the chances of Bubbles will reduce to nil.

2. Adjust the material temperature: When the vacuum bubble is far from the gate position, increase the material temperature to make the melt flow smoothly, and the pressure can be transmitted to the part far from the gate;

3. When the vacuum bubble is near the gate, the material temperature can be reduced to reduce the shrinkage.

4. Properly increase the temperature of the mold, especially the mold temperature at the part where the vacuum bubble is formed;

5. Set the gate at the thick wall of the product to improve the flow condition of the nozzle, runner and gate and the exhaust condition of the mold;

6, shorten the cooling time of the product in the mold, if necessary, slowly put the product in hot water to cool;

7. The products formed with point gates can be processed at low speed and low temperature to solve the problem of vacuum bubbles. When there are vacuum bubbles on the runner, the runner size can be increased.

In addition, during the production process, it was also found that the bubbling phenomenon occurred in the thick-walled parts soon after the PC product was de-molded, which was caused by the insufficient expansion of the gas inside the PC. Generally, it can be solved by extending the cooling time, enhancing the cooling effect, increasing the holding pressure and time, and delaying the decomposition of the PC.