SMC & BMC (Compression) Molds

1. Core Technologies  

• Advanced Heating Systems: Expertise in designing sophisticated oil or electrical heating systems within the mold to ensure uniform temperature distribution (typically 140°C–160°C) for optimal resin curing.

• High-Strength Tooling Structure: Design of heavy-duty mold bases and cavities capable of withstanding high compression pressures (50–150 bar) without deformation.

• Shear Edge & Vacuum Systems: Precise shear edge design to control flash and optimize material flow, integrated with vacuum-assisted venting to eliminate air entrapment and porosity.

• Surface Treatment for Composite Release: Application of specialized coatings (e.g., Chrome plating or Nitriding) to the mold surface to facilitate easy part release and prevent fiber sticking.

2. Customer Concerns & Solutions  

• Uniformity & Mechanical Strength: Customers worry about uneven fiber distribution leading to weak spots.

  • Our Solution: We optimize the “Charge Pattern” and mold cavity geometry through compression simulation to ensure fibers reach every corner of the part.

• Surface Quality (Class A Finish): Achieving a smooth surface on composite parts for painting.

  • Our Solution: Utilizing In-Mold Coating (IMC) technology and high-precision mirror polishing to achieve automotive-grade surface quality directly from the mold.

• Mold Longevity & Wear Resistance: SMC/BMC materials are highly abrasive due to glass fiber content.

  • Our Solution: We use high-grade forged steels (like 1.2311 or 1.2344) with targeted hardening treatments to ensure the mold maintains its edge and surface for over 100,000 cycles.

• Dimensional Accuracy: Controlling shrinkage in large-scale composite parts.

  • Our Solution: Precision calculation of material-specific shrinkage rates and the use of guided ejection systems to prevent part distortion during cooling.

3. GPT Technical Advantages  

• Large-Scale Capabilities: Equipped with large-capacity hydraulic presses and CNC machines to handle heavy SMC molds for automotive and industrial housings.

• In-House Testing: We provide full trial services for SMC/BMC molds, offering customers “ready-to-run” parameters for their production lines.

• Deep Material Expertise: Our engineers understand the chemistry of different SMC/BMC formulations, allowing us to advise on the best mold design for specific thermal and mechanical requirements.

• Integrated Fixture Design: We provide secondary cooling and trimming fixtures to ensure the final composite parts meet strict tolerance requirements after de-molding.

4. Typical Solutions  

• Automotive: Lightweight structural parts such as battery enclosures (EV), bumper beams, engine covers, and truck body panels.

• Electrical & Energy: High-insulation enclosures for electrical cabinets, junction boxes, and solar panel supports.

• Infrastructure: Heavy-duty manhole covers, drainage grates, and telecommunication pits requiring high corrosion and UV resistance.

• Sanitary Ware: High-gloss, durable bathroom components like shower trays and washbasins.

Thermoset Plastic Mold

SMC Mold Manufacturer, Compression Molding Specialist

SMC Automotive Mold, BMC Electrical Parts Tooling	SMC Mold Manufacturer, Compression Molding Specialist	SMC Mold Manufacturer, Compression Molding Specialist
Compression Mold / Compression Tooling	Compression Mold / Compression Tooling	Compression Mold / Compression Tooling
Thermoset Plastic Mold	Custom Compression Molding	Custom Compression Molding