The characteristics of plastic injection molding are determined by the characteristics of the raw material, and there are two main points: one is the filling activity of the plastic melt during injection, and the other is the shrinkage position of the plastic in the mold cavity when it is cooled and cured. These two points determine the difference of the injection mold and the difficulty of the injection mold design. When designing injection molds, it is necessary to inquire about the characteristics of the processed plastic raw materials, so that the designed injection mold is more reasonable, and the characteristics of plastics are usefully exercised in the design process. Therefore, the questions that need to be considered in the injection mold design process are as follows.
If the temperature is too high, the low molecular weight substances in the nucleating agent will be dissected and volatilized, which reduces the active ingredients in the nucleating agent, reduces the improvement effect of brightness, and the higher temperature will destroy some crystal nuclei of PP Huaxia, reduce the middle of heterogeneous nucleation, so that the modification effect is low; If the temperature is too low, the evacuation of the nucleating agent is not good, and the brightness effect is poor. Therefore, selecting a suitable molding temperature is particularly difficult to improve clarity.
the plastic processing industry is quite vigorous, with the continuous progress of material technology, the injection molding process is now more and more mature, many manufacturers have been able to master this technology to produce and process plastics. In the middle of the injection molding process, the demand is often applied to a few molds, and the quality of the mold simply affects the quality of plastic products to some extent, so for the operator, the application of the tube mold is the basic requirement. What events do you need to pay attention to in the middle of the application process of injection molds?
Speaking of plastic finished products friends are very familiar, we have a lot of plastic finished products around us, these products bring a lot of bento to our lives, in addition to our industrial manufacturing in life also appeared a lot of plastic finished products. Today's environment tends to be more and more demand for plastic finished products, so Changzhou plastic processing technology began to come out of our sight today, many people want to inquire about it but there is no channel, so this time we will briefly explain the related content to friends.
Product design: Plastic product processing holds rounding and increases the demolding slope. Mold: 1. Mold surface polishing. 2. Pull the white status growth thimble. 3. Confirm that the parting surface has no inverted buckles and air spurs, and repair it with oil stone. Injection molding process: 1. Under the premise of thorough filling of the clad product, accept the lowest possible injection pressure. 2. Confirm that there is no problem with the size and appearance of the product, reduce the holding pressure, holding time or cancel the holding pressure. 3. Adjust mold temperature and cooling time. When we are in the injection molding of plastic finished products, we usually encounter the idea of product whitening, we can first analyze the whitening from the methods of man, machine, material, method and ring, and classify and summarize all the components that affect the product; Re-examine the process opened up by the product.
From food storage to toiletries, from bags to water bottles, we rely entirely on plastic processing. There is no doubt that plastic manufacturers are a good choice in terms of availability and price. But before you continue to use plastic containers occasionally, stop and think about how this affects your health. Even if you are particularly careful about what you eat, using only plastic containers can put your health at risk. In the long run, the compounds in these seemingly harmless plastic containers can also affect your health.