2019-07-31

Why is there a crack in the injection molding process?

Why is there a crack in the injection molding process? Injection molding refers to the use of injection molding machine to plasticize plastic melt and melt, and then injection into the cavity of the molding die, after cooling and cooling, melt solidification and demoulding, injection molding machine injection molding products. The variety of injection molding products is relatively versatile, especially in the electronic processing, light industry and car manufacturing industry, there are many shapes of plastic products injection molding and […]
2019-07-31

Plastic injection technology

The color of the spray processing color is generally selected to be more than 10, do not choose low-gloss matt, because the hardness of the surface will be relatively low, below 1H, and at the same time the injection processing is not wear-resistant, in order to improve wear resistance, generally The hardness of the paint is required to be 2H or more, but when the hardness is too high, the paint will be very brittle, so the surface hardness should […]
2019-07-24

How to distinguish between plastic and plastic

There is only one word difference between plastic and plastic. In fact, there is no clear distinction between the two. The two are like twin brothers. I have you and you. composition: Plastic is not a pure substance, it is made up of many materials. Among them, high molecular polymers (polymers, also known as resins, natural resins and synthetic resins) are the main components of plastics. In addition, various auxiliary materials are added to the polymers according to their different […]
2019-07-24

Factors that cause cracks in plastic products

Cracking is one of the most common problems in plastic products, the main factor being due to stress deformation. There are residual stresses, external stresses, and stress deformations caused by the external environment. (-) crack caused by residual stress Residual stress is mainly caused by the following three conditions, namely, overfilling, demolding, and metal inserts. If the filling is excessive and the plastic product is cracked, it can be solved from these directions: (1) Since the pressure loss of the […]
2019-07-24

Is the plastic doll expensive or cheap?

As the saying goes, cheap is not good. I believe many people have seen how this plastic toy is said to be good, but when I bought it later, I found that it was not like that. More like some three-product toy dolls made by unscrupulous manufacturers, these can’t guarantee that safe and clean toy dolls will be bought back to children, which is not a wise choice. Some people say that I will not go wrong when I buy […]
2019-07-17

Toy manufacturers analyze the benefits of using PVC materials for plastic toys

Plastic toys use PVC to have many common advantages, so they are widely used in life and life. Below, the toy manufacturer’s plastic toys use PVC to have any advantageous characteristics. PVC plastic has mechanical properties, excellent electrical properties, strong acid and alkali resistance, good chemical stability, but low softening point, suitable for manufacturing wire and cable, toys, bags, etc. First, non-conducting: pvc plastic material can not be conductive, and is not subject to electrolysis, current corrosion, so no secondary […]
2019-07-17

Toy manufacturers tell you which toys are not suitable for children?

Parents forcibly divide men and women to buy educational toys/toy books for children according to subjective judgments, which deprives children of childhood fun. The child’s future personality orientation has little to do with what type of toys to play. Parents can just guide them correctly. Is the educational toy really effective? In fact, different toys have different ways of playing and can cultivate different abilities of the baby. But do you know which toys can’t be played for children? Today, […]
2019-07-17

How is the plastic doll colored?

We remind consumers that when purchasing plastic dolls for their children, they should choose regular channels to purchase, such as regular large shopping malls, maternal and child goods stores, brand stores and so on. Don’t buy items from unknown sources. The children’s toy logo on the market is messy, especially the material logo is too simple, only “plastic”, “PVC” and so on. Some plastic figurines smell pungent and there is also a discoloration phenomenon. Be cautious when choosing to buy. […]
2019-07-11

Pay attention to several principles of structural design of plastic products

First, in the selection of materials to consider: 1. Physical and mechanical properties of plastics such as strength, rigidity, toughness, elasticity, water absorption and sensitivity to stress; 2, plastic molding process, such as fluidity, crystallization rate, sensitivity to molding temperature, pressure, etc.; 3. The shrinkage of plastic products after molding and the difference in shrinkage ratios. Second, in the shape of the product: can meet the requirements of use, is conducive to filling, exhausting, feeding, and can be adapted to […]
2019-07-11

Factors that cause cracks in plastic products

Cracking is one of the most common problems in plastic products, the main factor being due to stress deformation. There are residual stresses, external stresses, and stress deformations caused by the external environment. (-) crack caused by residual stress Residual stress is mainly caused by the following three conditions, namely, overfilling, demolding, and metal inserts. If the filling is excessive and the plastic product is cracked, it can be solved from these directions: (1) Since the pressure loss of the […]