Xinhongyi Molding
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04
2024
-
06
3 common classifications of plastic mold products
Author:
In the production process of plastic mold products, the mold structure has an important influence on the quality of the parts. According to different molding methods, can be divided into different mold types, follow the small make up to see it.
1. High expansion polystyrene molding die
Structure: It is a mold for forming foam packaging materials of various desired shapes by using expandable polystyrene (beads composed of polystyrene and foaming agent).
Principle: Polystyrene can be steam formed in molds, including simple manual operation molds and hydraulic press straight-through foam molds.
Application: Mainly used to produce packaging products for industrial products. The materials used to make this mold are cast aluminum, stainless steel, bronze, etc.
2. Blister mold
Structure: A mold for molding some relatively simple plastic products by using plastic plates and plates as raw materials.
Principle: It is a plastic plate and sheet fixed on a mold or punch using a vacuum method or a compressed air forming method. In the case of softening, it deforms and adheres to the cavity of the mold to obtain the desired molded product.
Application: This molded product is mainly used to produce some daily necessities, food and toys.
3. Pressure molding die
Structure: It includes two types of structural molds, compression molding and injection molding. They are a kind of mold mainly used to form thermosetting plastics, and the corresponding equipment is a pressure molding machine.
Principle: The compression molding method heats the mold to the molding temperature (generally 103 ° 108 °) according to the characteristics of the plastic, and then puts the measured pressed plastic powder into the mold cavity and the feeding chamber, and closes the mold. Under the action of high heat and high pressure. After a period of time the viscous stream is softened and cured and shaped to the desired product shape. Unlike injection molding and compression molding, there is no separate feed chamber. Prior to molding, the mold is first closed and the plastic is preheated to viscous flow in the feed chamber. Under the action of pressure, it is extruded into the mold cavity and hardened.
The compression molding mold is mainly composed of cavity, feeding cavity, guiding mechanism, pushing parts, heating system, etc.
Application: Widely used to encapsulate electrical components. The material used to make the compression molding is substantially the same as that of the injection mold.
Plastic molds are tools used in the plastic processing industry to match plastic molding machines to provide complete configurations and precise dimensions for plastic products.
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