Tag Archives: plastic mould

High corrosion resistance Many resins and additives have a corrosive effect on the surface of the cavity. This corrosion causes the metal on the surface of the cavity to corrode, peel off, deteriorate the surface condition, and deteriorate the quality of the plastic parts. Therefore, use corrosion-resistant steel, or carry out chrome plating and cymbal […]

Whether the temperature of the mold is appropriate during the injection molding process will directly affect the dimensional accuracy, appearance, internal quality and product production efficiency of the injection molded product, which shows the importance of the mold temperature. So, how to adjust the mold temperature during injection molding? Injection molding requires a temperature adjustment […]

Plastic molds have become the most widely used applications in various fields. Plastic molds have always met market demand with excellent practical applications. Do you know how to judge the quality of injection molds? It is mainly reflected in six aspects. Mold life: on the premise of ensuring product quality, the number of working cycles […]

There are three ways of heat transfer: radiation, convection and conduction. In the mold, the heat generated by the plastic brought into the mold is 95% absorbed by the mold through conduction, and about 5% is emitted into the air by radiation and convection. During the processing, the temperature change is the most important influencing […]

After the mold is processed, the surface of the mold will be left with CNC machined knife marks or electric discharge fire patterns. At this time, the mold needs to be polished. Polishing can improve the finish of the injection molded product. The mirror spark machine can also do this. One point, but general manufacturers […]

The color of the injection molded product is colorful and highly ornamental. The raw materials for processing are transparent and translucent polyethylene and polypropylene. The reason for the rich color is that it needs to be colored. What are the reasons for the uneven color of injection molding Poor diffusion of the colorant, which often […]

The fluidity of thermoplastics can usually be analyzed by a series of indicators, such as molecular weight, melt index, Archimedes spiral flow length, apparent viscosity and flow ratio (processing length/plastic part wall thickness). Small molecular weight, wide molecular weight distribution, poor molecular structure regularity, high melt index, long spiral flow length, low apparent viscosity, high […]

The full name of INS is INSert-Mould-Decoration, which refers to putting a blister-shaped film into an injection mold for injection molding. The INS process is a new process derived from the IML process. As countries have higher and higher requirements for ecological and environmental protection, the INS process has been widely used in modern advanced […]

The main reasons and solutions for the uneven color of injection molded products are as follows: (1) The colorant is poorly diffused, which tends to cause a pattern near the gate. (2) The plastic or colorant has poor thermal stability. To stabilize the color tone of the part, it is necessary to strictly fix the […]