Plastic mold is the abbreviation of assembled plastic mold used for compression molding, extrusion molding, injection, blow molding and low foaming molding. It is mainly composed of concave combined base plate, concave combined base plate and concave combination, concave and convex combined base plate with variable cavity composed of card plate, convex combined base plate, convex combined card plate, cavity cutting unit and side cutting combined plate. Through the coordinated change of punch, die and auxiliary forming system, a series of molded products with different shapes and sizes can be processed. Then, Let's learn about the structure and composition of Guangdong plastic mold! In order to improve the properties of plastics, various auxiliary materials such as fillers, plasticizers, lubricants, stabilizers and colorants are added to the polymer to make it a plastic with good properties.

1. Synthetic resin is the main component of plastics, and its content in plastics is generally 40% ~ 100%. With high content, the properties of resin often determine the properties of plastics, so resin is often regarded as a synonym for plastics. For example, PVC resin and PVC plastic, phenolic resin and phenolic plastic are confused. In fact, resin and plastic are two different concepts.

Resin is an unprocessed original polymer. It is not only the manufacture of plastics, but also the raw material of coatings, adhesives and synthetic fibers. On the other hand, in addition to a small part of plastics containing 100% resin, most plastics need to add other substances in addition to the main component resin.

2. Filler, also known as filler, can improve the strength and heat resistance of plastics and reduce the cost. For example, adding wood powder to phenolic resin can greatly reduce the cost, make phenolic plastic one of the cheapest plastics, and significantly improve the mechanical strength. There are two kinds of fillers: organic fillers and inorganic fillers. The former includes wood powder, rags, paper, various textile fibers, etc., and the latter includes glass fiber, diatomite, asbestos, carbon black, etc.

3. Plasticizers increase the plasticity and softness of plastics, reduce brittleness and facilitate the processing and forming of plastics. Plasticizers are generally mixed with resins, non-toxic, odorless, heat stable high boiling organic compounds, and phthalates are commonly used. For example, when manufacturing PVC plastics, soft PVC plastics can be obtained by adding more plasticizers, but when plasticizers are not added or the addition amount is reduced.

4. Stabilizer is to prevent the decomposition and damage of synthetic resin by light and heat in processing and use, and prolong its service life. Stabilizer is added to plastics. Commonly used are stearate, epoxy resin, etc.

5. Colorants can make plastics have all kinds of bright and beautiful colors. Organic dyes and inorganic pigments are often used as colorants.

6. The function of lubricant is to prevent the plastic from sticking to the mold during molding, and make the plastic surface smooth and beautiful. Common lubricants include stearic acid and its calcium magnesium salts. In addition to the above additives, flame retardants, foaming agents, antistatic agents, etc. can also be added to plastics.

Guangdong plastic mold molding is a processing method used in mass production of parts with complex shapes. The specific principle is to use the screw of the injection molding machine to push the high pressure, put the heated and melted plastic material into the chamber of the plastic mold, cool and solidify, and obtain the plastic molded product.

The above is the structure and composition of Guangdong plastic mold. The plastic mold is composed of moving mold and fixed mold. The moving mold is installed on the moving template of the injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine. During injection molding, the moving mold and the fixed mold are closed to form the gating system and chamber. When opening the mold, the moving mold and the fixed mold are separated to take out the plastic products.