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    Company:Epluser Co.,Limited

    Customer Service: 86-755-86652783

    Contact Address: 408, 4 Floor, C Area, B Block, West Silicon Valley, 5010 Bao'An Blvd, Bao'An, ShenZhen, GuangDong,518128, China

    Email: sales@eplastech.com

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Common causes of malnutrition and in injection molding analysis

Epluser Co.,Limited | Updated: Sep 25, 2015

Fortune plastic molding factory in summing up the experience in the long years of accumulated experience in the injection molding of the following adverse reasons and countermeasures of means in many cases that may occur, likely to cause bad products, these are often encountered.

First: fill low/poor not coated

1, do not match the molding and injection molding machine, plasticizing capacity are insufficient, nozzle size, plastic block; runner during plastic flow resistance.

2, plastic melt unevenly, resulting in injection pressure is excessive, channel with insufficient or improper cold slug well reserved, cold materials into products and block the normal flow of plastic filled with mold cavity.

3 mold venting time, air can not be ruled out; die temperature is too cold, the plastic flow at a particular pressure.

Second: the poor Flash

1 mold clamping force insufficient injection mold was open, does not fit the parting surface or debris, mold insert block space.

2, die be locked in wear, surface offset or mold damage to mounting plate, bending of the rod strength.

3, finished size is too big or little, number are poorly designed.

Third: the shrinkage limit adverse

1, shot down, shooting short pressure keeping time, injection time faster than the slow, shooting less.

2, resin temperature is high, the temperature high, runner, poured into the mouth small.

3, thickness and width of reinforcement, and mold cooling are not appropriate.

Part IV: bad bubbles

1, containing more water in the plastic, injection pressure, time enough; keep the pressure, not enough time.

2, dissolved resin caused by moisture, volatile matter, air


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Address: 408, 4 Floor, C Area, B Block, West Silicon Valley, 5010 Bao'An Blvd, Bao'An, ShenZhen, GuangDong,518128, China
Tel: +86-755-86652783
 Fax:86-755-82976995
 E-mail:sales@eplastech.com