disposable cutlery mold-disposable cutlery plastic injection mold-Sinomould
Why is the disposable cutlery plastic injection mold always prone to burning, product hit dissatisfaction, product porosity and other issues when production. The main reason is that the exhaust structure is not good, but why the mold has gas:
1. The source of the gas in the injection mold.
(1)Gating system and mold cavity has air. (2)the raw material has water (3)Since the injection molding temperature is too high, some properties of plastic instability generated gas produced by decomposition.
2. The exhaust system is not good.
Bad exhaust system will bring a range of harm to the quality of plastic parts. The main performance is as follows:
(1)during the molding process, the melt will replace the cavity in the gas, if the gas discharge is not timely, it will cause difficulties in filling the melt, resulting in insufficient injection amount can not be filled cavity. (2) poor exhaust system will cause cavity increase pressure, when reached to a certain degree, the gas will come into plastic and cause air hole. (3)the melt material come into each cavity’s speed is different, which will cause welding line easily. And reduce the mechanical properties of plastic parts. (5) Since the obstruction cavity gas will reduce the filling velocity, cycle time, reduce the tax efficiency.
3. bubble in plastic products distribution.
(1) cutlery mold cavity resulting in the accumulation of air bubbles, often distributed on the opposite site of the gate. (2)plastic material decomposition or chemical reaction to produce bubbles are distributed along the thickness of plastic parts. (3)plastic material produced by gasification of residual water bubbles, then irregularly distributed throughout the plastic parts.
From the distribution of said plastic bubbles, we not only can find the bubbles determine the nature, but also can determine the mold exhaust part is correct and reliable. More information about disposable cutlery plastic injection mold welcome contact Candy.
skype: anole-hc-02
email: sales@sinomould.com
whatsapp & wechat: +86-13656561321
1. The source of the gas in the injection mold.
(1)Gating system and mold cavity has air. (2)the raw material has water (3)Since the injection molding temperature is too high, some properties of plastic instability generated gas produced by decomposition.
2. The exhaust system is not good.
Bad exhaust system will bring a range of harm to the quality of plastic parts. The main performance is as follows:
(1)during the molding process, the melt will replace the cavity in the gas, if the gas discharge is not timely, it will cause difficulties in filling the melt, resulting in insufficient injection amount can not be filled cavity. (2) poor exhaust system will cause cavity increase pressure, when reached to a certain degree, the gas will come into plastic and cause air hole. (3)the melt material come into each cavity’s speed is different, which will cause welding line easily. And reduce the mechanical properties of plastic parts. (5) Since the obstruction cavity gas will reduce the filling velocity, cycle time, reduce the tax efficiency.
3. bubble in plastic products distribution.
(1) cutlery mold cavity resulting in the accumulation of air bubbles, often distributed on the opposite site of the gate. (2)plastic material decomposition or chemical reaction to produce bubbles are distributed along the thickness of plastic parts. (3)plastic material produced by gasification of residual water bubbles, then irregularly distributed throughout the plastic parts.
From the distribution of said plastic bubbles, we not only can find the bubbles determine the nature, but also can determine the mold exhaust part is correct and reliable. More information about disposable cutlery plastic injection mold welcome contact Candy.
skype: anole-hc-02
email: sales@sinomould.com
whatsapp & wechat: +86-13656561321
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