Views: 0 Author: Site Editor Publish Time: 2021-06-22 Origin: Site
The dimensional accuracy of plastic injection molded products is an important data to measure whether the product is qualified. If the size of the product injected by the plastic mold is unstable, then the plastic part is an unqualified product. We need to carefully analyze what causes the dimensional instability of plastic parts.
One: Injection molding machine
(1) The feeding system of the injection molding machine is abnormal.
(2) Unstable back pressure or unstable temperature control during injection.
(3) The hydraulic system of the injection molding machine is malfunctioning.
Two: injection mold
(1) Unbalanced gate and runner size.
(2) The cavity size is not accurate.
Three: Injection molding process
(1) Improper temperature control of the injection mold due to uneven temperature of the injection mold or improper cooling circuit.
(2) The pressure is low during injection.
(3) The injection pressure holding time is insufficient or fluctuates.
(4) The barrel temperature is high or the injection cycle is unstable.
Four: raw materials
(1) When changing batches of production, the performance of the plastic material changes.
(2) Plastic materials have high moisture content.
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Tuofang company is specialized in designing and manufacturing Plastic Injection.
No. 345 Xinjiang Road, Xinqian Street of Huangyan, Taizhou City, 318020, Zhejiang Province, China
