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Plasitc Injection Mould Injection Molding Method
Wishsino International Group Limited | Updated: Aug 04, 2017

Plasitc Injection Mould Injection molding method

Plastic Mold Injection Molding Method

Rotational molding, also known as rotary molding, is a process for the manufacture of hollow and seamless products of various sizes and shapes. Traditionally, it is mainly used in thermoplastic materials, in recent years, cross-linked polyethylene and other thermosetting materials, such as rotational molding has developed rapidly. Since rotomolding does not require higher injection pressure, higher shear rates or precise compound gauges. Therefore, the mold and the machine are relatively low, and the service life is longer. The main advantages are: the performance of the machine / price is relatively high; complex parts of the molding does not require after assembly; a variety of products and a variety of colors can be molded; mold cost less;

The basic process is very simple, the powder or liquid polymer in the mold, the heating at the same time around the two vertical axis rotation, and then cooling. At the beginning of the heating phase, if a powdered material is used, the surface of the mold is formed into a porous layer and then gradually melted with the circulation process to form a homogeneous layer of uniform thickness. If a liquid material is used, Mold surface, when the gel point is reached when the complete stop flow. The mold is then transferred to the cooling zone, cooled by forced ventilation or water spray, and then placed in the work area where the mold is opened, the finished part is removed, and then the next cycle is carried out. Stainless steel electrode. Plastic mold to follow the stringent production technology, strict quality control system, the production of product quality and stability, the main production of water conservancy plastic mold, water conservancy slope protection plastic mold, rice seedling plate and other molds.

Injection Molding of Plastic Mold Injection Molding

The polymer blending is defined as a process of increasing the grade of the polymer or polymer system by melt mixing.

The mixing process from the addition of a single additive to a variety of additive treatments, polymer alloys and reactive mixes, has a wide range. It is estimated that one third of the US polymer production to be mixed. The mix can be customized according to the final application performance requirements. Mixing products have miscellaneous properties such as high gloss and excellent impact strength, or precision molding and good stiffness.

Mixing good polymers are usually pelletized for further processing. What is increasingly interesting in the industry, however, is the combination of mixing and the next process, such as extrusion of the profile, which avoids the heating of the polymer again.