Exhaust system need to design for easy air escape, but don't let the molten plastic to go through. When there is no exhaust system the exhaust system is not designed well, then will cause some serious defects on the products as being the way South Korea, fire stain, details not filled out, ... Exhaust system the most commonly used is the exhaust trench on the mold surface and facing grinding around ti tiny light (push) products. In addition, the gas also can escape through the cooling water, the tiny slits of the sliding system, the (Department of dental implants).. ...
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