What are the common types of plastic materials?

Plastic raw materials can also be divided into general plastics, engineering plastics, and special plastics according to their application range.

Release time:

2024-12-09

Plastic raw materials can also be divided into general plastics, engineering plastics, and special plastics according to their application range.

Common general plastics include: PP, PVC, PE, PS, etc.

Common engineering plastics include: ABS, PC, PMMA, POM, PA6, PA66, PET, PBT, SAN, etc.
Common special plastics include: PPS, PEI, etc.
Engineering plastic pellets are often obtained by modifying some general plastics; for example, by changing certain molecular structures inside or adding other components such as glass fibers.
Engineering plastics are industrial plastics used for industrial parts or shell materials, with excellent strength, impact resistance, heat resistance, hardness, and aging resistance.
The definition in the Japanese industry is "high-performance plastics that can be used for structural and mechanical parts, with heat resistance above 100°C, mainly used in industry."
Its performance includes:
a. Thermal properties: high glass transition temperature (Tg) and melting point (Tm), high heat distortion temperature (HDT), high long-term use temperature (UL-746B), large temperature range for use, and small thermal expansion coefficient.
b. Mechanical properties: high strength, high mechanical modulus, low creep, wear resistance, and fatigue resistance.
c. Others: chemical resistance, excellent electrical resistance, flame resistance, weather resistance, and good size stability.

However, since plastic products are high molecular polymers, how to handle discarded plastic products has become a perplexing problem.

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Mold Standard Parts

Standard mold parts are based on China's mold standardization system, which includes four main categories of standards: mold basic standards, mold processing quality standards, mold parts standards, and technical standards related to mold production.

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Custom Injection Molds

When considering a "custom" injection molding machine, the most important thing is to assess the complexity of the project and determine the level of customization you need—not just for the mold itself, but also for the processes that work with the molding machine (e.g., engineering and design support, scientific methods, analytical tools, plastic part design, and molding process technology).

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Plastic mold heat treatment issues

Mold heat treatment is an important means of enhancing the hardness performance of steel materials, generally carried out after the rough machining of the mold.

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Analysis of Development Trends in the Mould Industry

In recent years, the pace of structural adjustment in the mold industry has accelerated, mainly manifested in large-scale