The crazing defect of plastic mold injection molding plant in the process of injection molding products can not be solved after debugging by various methods. At this time, it is necessary to consider whether the solution to such problems is not considered at the beginning of mold design. Next, the machco mold designer will analyze why the mold design can solve the product crazing problem.
Through the inspection of the following four aspects, the problems of this kind of plastic mold injection molding products are solved in the mold design:
1. Check whether the vent size is appropriate. The recommended vent size is 0.025mm for crystalline plastics and 0.038mm for amorphous plastics.
2. The design of mold runner can reduce the friction resistance, because if the friction resistance of runner, gate and cavity in the mold is large, the product will be partially overheated and decomposed.
3. Gate and cavity distribution shall be designed to be balanced. Too narrow vertical pouring, runner, gate and even plastic part design may cause excessive shear heat and make the plastic overheat and crack.
4. Avoid leakage of cooling water into the cavity. Unreasonable cooling system will cause heating imbalance and local overheating or block the air channel.
If you want to know more about Dongguan plastic mold injection molding, injection molding and other related knowledge, you can log in to the official website of pintejin molding. where there is a more detailed introduction and look forward to your visit!
About China pintejin Molding Industrial Company Limited
pintejin Mold is a China mold maker of plastic molds- injection mold, die casting moulds, plastic blow molding, rotational molding, medical plastic injection molding, two shot plastic injection molding, insert molding, overmolding, metal injection molding, micro injection molding, powder injection molding, ceramic injection molding, liquid injection molding, husky injection molding, household mold, casting mold, die mold tool, custom molds, china moulds, rapid prototyping tooling, plastic prototyping tooling, punch press tooling, die and tooling for mobile/ cell phone parts, automotive parts, vacuum cleaners, rechargeable tools, telephones, copiers, computers, multimedia speakers, and many other electronic products and household appliances. And also a plastic product manufacturer, mold manufacturer China– plastic parts, plastic water tank, plastic balls, plastic containers, plastic buckle, plastic anchor, plastic hanger, plastic spoon, plastic pipe fitting, plastic tumble, plastic tableware, plastic cups, plastic bottles, plastic tray, plastic cosmetic container, plastic case, plastic food container, plastic chairs, plastic caps, plastic cap closure, plastic tubes, plastic water pipes, plastic knobs, plastic tubing, plastic utility boxes, plastic racks and so on.
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