Compression Molding Services for High-Strength Thermoset Plastic Parts

When durability, heat resistance, and structural integrity are non-negotiable, compression molding is the ideal solution. Our advanced compression molding services utilize proven plastic compression molding processes to manufacture high-strength components from thermoset materials with excellent performance in demanding environments. Powered by modern compression molding machines, we deliver reliable and scalable plastic processing solutions for electrical, […]

Product Description

When durability, heat resistance, and structural integrity are non-negotiable, compression molding is the ideal solution. Our advanced compression molding services utilize proven plastic compression molding processes to manufacture high-strength components from thermoset materials with excellent performance in demanding environments.

Powered by modern compression molding machines, we deliver reliable and scalable plastic processing solutions for electrical, automotive, and industrial applications.


How Compression Molding Works

Our process follows a precise and efficient plastic molding process:

Preheated material → Placed into mold cavity → High-pressure compression → Curing → Finished part

Unlike traditional thermoplastic methods, this plastic compression molding process is specifically designed for thermosetting plastics, which permanently cure under heat and pressure. This results in:


What We Manufacture

Electrical Insulation Components

We produce high-performance electrical insulating parts using thermoset materials. Through controlled plastic forming processes, our products offer:

Widely used in switches, circuit systems, and industrial electrical equipment.


Automotive Components

Our automotive plastic parts are manufactured using robust automotive plastic parts manufacturing processes. Compression molding is ideal for:

These parts are engineered for strength, reliability, and long service life in demanding automotive environments.


Thermoset Plastic Products (Bakelite, etc.)

We specialize in thermosetting plastic products, including Bakelite (phenolic resin components). Using optimized thermosetting plastic manufacturing processes, we ensure:

Perfect for industrial and electrical applications where performance matters most.


Key Advantages of Compression Molding


Our Equipment & Capabilities

We operate advanced compression molding machines designed for precision and efficiency:

Our integrated plastic processing equipment ensures full control over the entire plastic manufacturing process, from raw material to finished product.


Who We Serve

We support a wide range of industries:


Why Choose Us?


Let’s Build Stronger Products Together

If you need a trusted partner for high-strength thermoset plastic parts, our compression molding services are ready to support your project from concept to production.

Contact us today to discuss your requirements and discover how we can deliver durable, high-performance solutions.


FAQ: Compression Molding Services for High-Strength Thermoset Parts

What materials are used in compression molding?

Compression molding primarily processes thermoset materials including phenolic (Bakelite), urea formaldehyde, melamine, polyester BMC/SMC, and epoxy compounds. Fiber-reinforced thermosets such as glass or carbon fiber SMC are common in structural industrial applications.

Why are thermoset parts preferred over thermoplastic parts in certain applications?

Thermosets cure through a chemical crosslinking reaction, creating a non-melting three-dimensional polymer network. This gives them superior high-temperature stability, chemical resistance, and compressive strength in applications where thermoplastics would creep, soften, or distort.

What tolerances can compression molding hold?

Thermoset compression molding typically holds tolerances of ±0.1–0.2 mm on linear dimensions. Tighter tolerances are possible with higher-precision tooling and controlled compound preparation. Flash removal and post-mold shrinkage variation are the main sources of dimensional variation.

How is flash managed in compression molded parts?

Flash forms at the parting line where the mold faces meet. Flash must be removed by manual trimming, tumbling, or cryogenic deflashing. Flash thickness is controlled by mold fit, charge weight accuracy, and press force.

Can compression molded parts include metal inserts?

Yes. Metal pins, studs, terminals, and inserts are placed in the mold cavity before charge loading. The compound flows around the inserts during compression. Insert retention is excellent in thermosets because the cured material does not shrink away from the insert the way some thermoplastics do under temperature cycling.

Technical Parameters

ModelCM-100CM-200CM-300CM-500
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Clamping Force100 tons200 tons300 tons500 tons
Mold Size (Max)400×400 mm600×600 mm800×800 mm1000×1000 mm
Max Stroke400 mm500 mm600 mm700 mm
Heating Plate Temperature300 °C320 °C340 °C360 °C
Max Pressure50 MPa80 MPa100 MPa120 MPa
Cycle Time30-120 sec30-150 sec40-180 sec50-200 sec
Motor Power15 kW30 kW45 kW75 kW
Machine Dimensions (L×W×H)3×2×2.5 m4×2.5×3 m5×3×3.5 m6×3.5×4 m
Total Weight4 T8 T12 T18 T
Control SystemPLC + Touch ScreenPLC + Touch ScreenPLC + Touch ScreenPLC + Touch Screen

Samples