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Short Shot Injection Molding Jun 14, 2019
Insufficient injection is also called short shot. Short shot is the phenomenon of partly incomplete at the end of the material flow, or a part of the cavity filled with dissatisfaction, especially the thin wall area or the end area of the the runner when injection molding. When the melt is cooled down without filling the mold cavity, or the melt does not fill completely after running into the cavi...
- short shot injection molding
- mold cavity
- mould temperature
Analysis of the causes of bubbles in injection molding products Jun 14, 2019
The gas of the bubble (vacuum bubble) is very thin and belongs to the vacuum bubble. In general, if a bubble is found at the moment of mold opening, it is a gas interference problem. The formation of vacuum bubbles is due to insufficient filling or low pressure. Under the rapid cooling of the mold, the fuel at the corner of the cavity is pulled, resulting in a volume loss. Solution: (1) Increase t...
- mold Filling
- injection molding
- plastic mold Filling
How to deal with high defective rate of molding white shell products? Jun 22, 2019
When we were molding white shell products ,there was always a high defective rate ,because of products turning yellow nonuniform colour and etc .The reason is we didn't pay attention to the details during molding .So what can we do to decrease the defective rate ? We have listed the following five points : 1、The environment is truly important , so keep the nozzle and barrel clean will decrea...
- Injection molding
- Plactic products
- Plastic molding
Analysis of the Causes of Poor Surface Gloss of Injection Molding Products Jun 28, 2019
The surface gloss of the injection molding is poor, and there are two main reasons for the overall transparency. First, the mold surface is not polished well, and the second is that the melt is cooled prematurely. The specific solution is as follows: (1) Increase the material temperature, injection pressure and speed, especially mold temperature. The mold temperature has a significant effect on th...
- mold Filling
- plastic mold Filling
- injection molding machine
The short shot checkpoints Jun 28, 2019
The short shot checkpoints As mentioned that, when the melt is cooled down without filling the mold cavity, or the melt does not fill completely after running into the cavity, it is called the short shot injection molding. We analyse the reasons of short shot. So today let’s discuss how to improve the insufficient injection. Here lists short shot checkpoints: 1) Improper control of process conditi...
- mould temperature
- mold cavity
- short shot injection molding
The Classification of Plastic Raw Material Jul 19, 2019
The phrase plastic is familiar to us, but most people don't know much about plastic. Plastic materials can be divided into three categories: engineering plastics, general plastics, thermoplastic elastomer plastic materials. Engineering plastics: PC, PC/ABS, PBT, POM, PMMA, PA6, PA66, PPA, PET, PEI, PPS, PCTG, PETG, PPO, COC, LCP, PPE, etc. General plastics: ABS, PVC, EVA, PP, HIPS, HDPE, LDPE, LLD...
Annealing of plastic products Jul 12, 2019
The annealing treatment of plastic products refers to the plasticization unevenness of the plastic in the cylinder or the uneven cooling rate of the product in the cavity, which causes the internal stress of the product to cause deformation, cracking and aging of the product in the future. The annealing treatment is carried out indoors, using a hot liquid medium such as hot water, hot mineral oil,...
- mold Filling
- injection molding machine
- plastic mold Filling
What is snake mark and how to solve it? Jul 12, 2019
Snake mark is an indication when injection molding. So what will cause the snake mark? When injecting a plastic part, the Gate is smaller, while the space of the mold cavity is relatively larger. At this time, the temperature of resin is cooling down before it fullly injects into the whole mould cavity frame. Therefore, it will have a flowing marks remaining on the part surface like a snake crawli...
- injection molding
- snake mark
- mold cavity

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