Explanation of Tungsten Heater for Vacuum Plating——Injection Mold Parts

Injection molding machine is called as die cutting machine in injection molding industry. An Injection molding machine, also known as an injection press, is a machine for manufacturing plastic products by the injection process. It consists of two main parts, an injection unit and a clamping unit. Injection molding machines can fasten the molds in either a horizontal or vertical position. The majority of machines are horizontally oriented, but vertical machines are used in some niche applications such as insert molding, allowing the machine to take advantage of gravity. Injection molding machine can form complex shape dense plastic products with the precise size, which is widely used in national defense, electronics, automotive, transportation, building materials, packaging, agriculture, education and health. With the rapid development of the plastics industry today, whether in the number or species, the injection molding machine occupies an important position, and its production accounts for 20%~30% of the total number of plastic molding equipment, thus becoming one of the fastest growing plastic machinery.

Tungsten heater for vacuum plating has a high requirement for injection mold parts :
1. Injection mold parts surface must be kept clean and smooth without any oil stain and besmirch.
2. The surface roughness of injection mold parts should be low To the greatest extent.
3. The internal stress of injection mold parts should maximize minimized, and both inside and outside corners should be rounded corner. Use lower injection pressure and the higher mold temperature, and injection speed should be slow.
4. The shape of injection mold parts is conductive to obtain a uniform coating, such as slightly protruding in the middle of a large flat-screen.
5. The wall thickness of injection mold parts should be appropriate, too thin can cause deform and reduce coating adhesion, but too thick will likely shrink, affecting the appearance. In general, thin-walled cannot be less than 0.9mm, thick wall cannot exceed 3.8mm.

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