Compression Molding of Composites

Compression molding is a widely employed technique in composite manufacturing, involving the use of heat and pressure to shape composite materials. In this process, a pre-measured amount of composite material, often in the form of sheets or pellets, is placed into a mold cavity. The mold is then closed and subjected to high pressure and temperature, allowing the material to conform to the shape of the mold. As the material compresses and solidifies, it forms the desired product. Compression molding is favored for its ability to produce complex shapes with high fiber volume fractions, ensuring strong and consistent composite parts.

Prepreg compression molding supports higher-rate propeller manufacturing
Aerospace

Prepreg compression molding supports higher-rate propeller manufacturing

To meet increasing UAV market demands, Mejzlik Propellers has added a higher-rate compression molding line to its custom CFRP propeller capabilities.  

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Kent Pultrusion
ELFOAM rigid foam products

Latest Compression Molding Articles

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Automotive

Porsche develops TABASKO method for lightweight vehicle series production

Patented carbon fiber-reinforced polypropylene tape-based process supports cost reduction, light weight and thinner walls without sacrificing rigidity.

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Wickert press advances Chemnitz polymers, composites and metals research

Since its installation, the rapid heating/cooling press has become of great importance to the Institute for Lightweight Structures’ work in processing high-performance structural and hybrid components for industrial-scale applications.

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Trends

Pinette commissions large-scale stamp-forming press for TPCs

Airbus Aerostructures facilities will integrate this forming press that is expected to advance next-gen aerospace parts production thanks to its size and performance.

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JEC

Bcomp, SFG Composites to scale up automotive flax fiber

Bcomp natural fiber reinforcements are to be integrated into SFG compression molded technology and manufacturing processes, clearing the way for continued support in vehicle design.

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Wind/Energy

LIT Rapid Solar system enhances composite photovoltaic panel assembly potential

Induction-heated thermocompression press developed collaboratively by Roctool and CEA-Liten has verified improvement in temperature and pressure conditions, opening up new opportunities.

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Induction heating system enables OOA composites processing

JEC World 2025: Roctool focuses attendees’ attention on the light induction tooling (LIT) system targeting efficiency, sustainability and performance.

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Knowledge Centers

CW Tech Days: Sustainability
CW Tech Days: Sustainability

This CW Tech Days event will explore the technologies, materials, and strategies that can help composites manufacturers become more sustainable.

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Design, Simulation and Testing Technologies for Next-Gen Composite Structures
Design, Simulation and Testing Technologies for Next-Gen Composite Structures

Review the state of the art in design, simulation, failure analysis, digital twins, virtual testing and virtual inspection.

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The CAMX Forecast
The CAMX Forecast

Headed to CAMX? Preview the technology before the show!

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Master Bond Epoxy Adhesives
Industrial CNC Routers
Wabash
Wickert Hydraulic Presses
Release agents and process chemical specialties

Latest Compression Molding News And Updates

JEC

SMC, compression molding capabilities to support European composites manufacturers

JEC World 2025: SFG Composites presents its ability to deliver high-quality, cost-effective composite solutions in-house with fast lead times as an alternative to domestic and Asian suppliers.

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Thermoplastics

Thermoplastic composite partnership drives customer support, systems industrialization

JEC World 2025: Unwind3D Srl and Advanced International Multitech are highlighting the Spidui compression molding cell and TP Multi-Station Lines for significant scale-up of thermoplastic parts production.

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JEC

Five-minute autoclave augments high-volume TPC manufacturing

JEC World 2025: Corebon unveils a system solution that eliminates the need for traditional autoclaves and presses, delivering consistent, high-quality TPC parts in less than 5 minutes.

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Aerospace

Uavos unveils carbon fiber main landing gear spring

Enhanced unmanned aircraft performance can be achieved via Uavos’ latest 16-kilogram design, rigorously tested to illustrate its safety and efficiency optimizations.

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Automotive

Röchling and partners iterate thermoplastic composite convertible roof beam

Röchling Automotive, Mercedes-Benz, Envalior and Valmet replaced traditional magnesium with composites, achieving a more seamless, lightweight structural design that opens opportunities for other vehicle applications.

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Glass Fibers

Trinseo demonstrates DLFT, PC for electric vehicle battery packs

The DLFT production process enhances polycarbonate’s performance qualities through high thermal stability that next-gen battery packs demand.

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Airtech
Your partner for advanced composite cores
NewStar Adhseives - The Glue Pros
Large Scale Additive Manufacturing
Join the webinar about advanced conductor cores

Featured Posts

Thermoplastics

Composite bipolar plates provide 81% improvement to hydrogen fuel cell power density

Ultra-thin CFRTP plates developed by Hycco achieve a 7.5 kilowatt/kilogram power density, high durability for fuel cells in long-flight drone and heavy-mobility applications.

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SRI develops scalable, infiltration-free ceramic matrix composites

Work in two DOE projects is demonstrating C/C-SiC produced in 3-5 days with <5% shrinkage, <10% porosity and 50% the cost of conventional C/C and C/C-SiC.

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Sustainability

PUR composite sandwich panels for 3D automotive parts, high-volume panels and more

At its U.S. sites, Ascorium produces glass fiber/PUR 3D parts via semi-automated molding, high-volume flat panels via a continuous line while working toward bio-based PUR and recycling.

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VIDEO: High-volume processing for fiberglass components

Cannon Ergos, a company specializing in high-ton presses and equipment for composites fabrication and plastics processing, displayed automotive and industrial components at CAMX 2024.

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Sustainability

Bladder-assisted compression molding derivative produces complex, autoclave-quality automotive parts

HP Composites’ AirPower technology enables high-rate CFRP roof production with 50% energy savings for the Maserati MC20.

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Work In Progress

Co-molding SMC with braided glass fiber demonstrates truck bed potential

Prepreg co-molding compound by IDI Composites International and A&P Technology enables new geometries and levels of strength and resiliency for automotive, mobility.

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Carbon Fiber 2025
Composites One - distributor
Ancamine® 2337M
Encapsulated Sample Rheometer (ESR)
Composites One - distributor