The structure of a plastic mold

The structure of a plastic mold

Customized Plastic Toolkit Mould is an abbreviation for combined molds for compression molding, extrusion, injection, blow molding and low foam molding. The coordinated changes of mold convexity, concave mold and auxiliary molding system can process a series of plastic parts of different shapes and sizes.

Customized Plastic Tool Shell Mould is the mother of industry, and the release of new products will involve plastics.

In order to improve the performance of Injection Tool Shell Mold, it is also necessary to add various auxiliary materials to the polymer, such as fillers, plasticizers, lubricants, stabilizers, colorants, etc., in order to become a Customized Plastic Toolkit Mould with good performance.
1. Synthetic resin is the most important component of plastics, and its content in plastics is generally 40%~100%. Because of the large content and the properties of resin often determine the properties of plastics, people often regard resin as synonymous with plastics. For example, polyvinyl chloride resin is confused with polyvinyl chloride plastic, phenolic resin and phenolic plastic. In fact, resin and plastic are two different concepts. Resin is an unprocessed, virgin polymer that is used not only to make plastics, but also as a raw material for coatings, adhesives and synthetic fibers. In addition to a very small part of the Customized Plastic Toolkit Mould containing 100% resin, the vast majority of plastics, in addition to the main component resin, need to add other substances.
2. Filler
Fillers, also known as fillers, can improve the strength and heat resistance of plastics, and reduce costs. For example, the addition of wood powder to phenolic resins can greatly reduce costs, making phenolic plastics one of the cheapest plastics, while also significantly improving mechanical strength. Fillers can be divided into organic fillers and inorganic fillers, the former such as wood powder, rags, paper and various fabric fibers, etc., the latter such as glass fiber, diatomaceous earth, asbestos, carbon black, etc.
3. Plasticizer
Plasticizers can increase the plasticity and softness of plastics, reduce brittleness, and make plastics easy to process. Plasticizers are generally miscible with resins, non-toxic, odorless, light and heat stable high boiling point organic compounds, the most commonly used phthalates. For example, in the production of polyvinyl chloride plastics, soft PVC plastics can be obtained if more plasticizers are added, and rigid PVC plastics can be obtained if no plasticizers are added or less (dosage <10%).
4. Stabilizer
In order to prevent the decomposition and destruction of synthetic resin by the action of light and heat during processing and use, and to prolong the service life, stabilizers should be added to Customized Plastic Tool Shell Mould. Commonly used are stearate, epoxy resin, etc.
5. Colorants
Colorants can give plastics a variety of bright, aesthetically pleasing colors. Organic dyes and inorganic pigments are commonly used as colorants.
6. Lubricant
The role of the lubricant is to prevent the plastic from sticking to the metal mold during molding, and at the same time to make the surface of the Customized Plastic Toolkit Mould smooth and beautiful. Commonly used lubricants are stearic acid and its calcium and magnesium salts. In addition to the above additives, flame retardants, foaming agents, antistatic agents, etc. can also be added to Customized Plastic Tool Shell Mould.