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The purpose of heating and cooling in plastic molds

Yesterday was the first day of the college entrance examination, after all the candidates today, Panasonic can breathe a sigh of relief. But what about this matter? Think about the work I still work hard, today we introduce the plastic mold in the purpose of heating and cooling.

Heating


Thermosetting plastics require higher mold temperatures to facilitate cross-linking reactions


 Some thermoplastics also need to maintain more than 80 degrees of mold temperature, such as polyoxymethylene, polyphenylene ether


 large mold to warm up


Hot runner molds are widely used


cool down


The molding cycle is mainly dependent on the cooling setting time (about 80%), by reducing the mold temperature to shorten the cooling time, is to improve production efficiency of the key.


Mold temperature is too low


 plastic fluidity is poor, plastic parts contour is not clear, the surface dull;


Thermosetting plastics are insufficiently cured and have deteriorated significantly.


Mold temperature is too high


 easy to cause flash material sticky mold, plastic parts stripping difficult, large deformation;


Thermoset plastics are too familiar.


Uneven temperature


Core temperature difference is too large, plastic parts shrink uneven, increased internal stress, plastic deformation, size instability.


 


Note: The above information from the Jiezhen mold on the Internet, welcome reproduced, indicate the source!

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Contact: Mr. Zhang

Phone: 13509005172

Tel: 0769-85394568

Email: jiezhen_tech@163.com

Add: Dongguan Changan Licheng Industrial F building

Website:www.128jz.com

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