The plastic mold can be viewed as an exchanger that carries the heat of the hot melt away from the plastic mold by the circulating refrigerant. The role of the cooling system 1. Improve productivity 2. Ensure the effective of a mold In the whole cycle of thermoplastic injection molding, the mold cooling time accounts …
If the plastic parts are unevenly shrink-ed, the internal stress distribution will be uneven. If the stress exceeds the rigidity of the plastic part, the warpage and deformation of the plastic part will be found, which will affect the dimensional stability of the plastic part. But what is warpage? When internal stress (due to uneven …
In plastic injection molding, the temperature of the melt in the cavity is generally between 200 and 300 degree, the melt is formed in the cavity, cooled, and solidified into a product profile. When the injection molded product is taken out of the mold, the temperature is generally 60 degree about, the heat released by …
PET chemical name is polyethylene terephthalate, also known as polyester. At present, GF-PET is the most used among customers, mainly for preform injection. The rheology of PET in molten state is better, and the effect of pressure on viscosity is greater than temperature. Therefore, the fluidity of the melt is mainly affected by pressure. Plastic …
In a sense, the injection mold is also a displacement device where the hot plastic melt enters into the mold cavity while displaces the air in the mold cavity. In fact, the air in the mold is not limited to the cavity, especially the three-plate injection mold, and the air existing in the flow path …
Transparent parts have their special characteristics and functionality. The poly-carbonate injection molding will inevitably be used for auto part. When injection molding, we often encounter some thick-walled transparent injection molded parts. For performance reasons, these plastic parts are made of PC. When the average wall thickness exceeds 6mm and the MAX wall thickness is more …
PC injection molding Excellent performance, high transparency, good impact toughness, creep resistance, and wide injection temperature range. Process characteristics of PC: melt viscosity has little sensitivity to shear rate, but high sensitivity to temperature, no obvious melting point, high viscosity of melt, easy hydrolysis of resin at high temperature, and PC injection easy cracking. For …
How to Present Your Product Idea to a Design Firm You have a product idea you want to take to market. Now what? Aspiring entrepreneur, tinker, engineer…Your mind runs 1,000 miles per hour thinking of the many different ways you can improve your environment. Just recently you have come up with a product idea that you know …