This is because the plastic that is not completely cooled and hardened is caused by the release of gas under the action of the pulsation. Analysis of the causes of swelling and bubbling of injection molded articles is due to the fact that the plastic which is not completely cooled and hardened releases air expansion due to the internal pressure. Brass Safety Valves,Brass Valve Price List,Brass Vs Stainless Steel Valves,Brass Valve Types AS-SUR INDUSTRIAL VALVE CO., LTD. , https://www.assur-valve.com
ã€solution】:
(1) . Effective cooling. Reduce the mold temperature, extend the mold opening time, and reduce the drying and processing temperature of the material.
(2). Reduce the filling speed, reduce the forming cycle and reduce the flow resistance.
(3). Increase holding pressure and time.
(4). Improve the condition that the wall of the part is too thick or the thickness changes greatly.
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