Thermoset Molding

Thermoset Molding

With decades of thermoset molding expertise, Woodland Plastics specializes in thermoset injection molding of materials such as Phenolic, Bulk Molding Compound (BMC), Epoxy, and DAP with press tonnage from 80-500T. Our customers rely on Woodland Plastics as a preferred thermoset molding source for components and assemblies used within a variety of industries and end products. Woodland Plastics injection molds thermoset parts for the Appliance, Automotive, Electrical, Energy, and Industrial markets that require components and assemblies to withstand aggressive and challenging environments. Such environments suitable for thermoset parts includes applications experiencing high and intermittent operating temperatures, electrical and corrosive environments, outdoor and UV exposure, and applications exposed or submerged in chemicals, oils, and/or automotive fluids. Woodland Plastics has offers thermoset molding processes of injection, injection-compression hybrid, and insert molding.

Whether a product assembly is completely new to the market, or an existing project exploring a material conversion from a metal or thermoplastic to thermoset; Woodland offers thermoset molding capabilities to alleviate product pain points, reduce manufacturing costs, consolidate the number of parts in an assembly, and improve overall product performance. Implementing molded thermosets into a product assembly allows OEMs and engineers are able to protect internal components and product assemblies from degradation or failure.

PDF Thermoset Plastics Q&A

PDF Metal-to-Thermoset Conversion

High Heat Stability

Customer Pain Point – Components or product assemblies may degrade or disfigure while exposed to high heat and high operating temperatures during application use.

What Thermoset Molding Provides – Heat resistance, temperature deflection, & dimensional stability up to 500° Fahrenheit and above.

Why Partner with Woodland Plastics – With extensive thermoset molding experience, Woodland Plastics manufactures heat-stable components that remain dimensionally stable even within high operating temperatures.

Chemical Resistance

Customer Pain Point – Product application may be exposed to oils, automotive fluids, or even rainwater run-off including salts or other chemicals.

What Thermoset Molding Provides – With excellent chemical resistance and stability, thermoset product assemblies and internal components will not corrode, nor be affected physically when exposed to harsh chemicals, fluids, or other challenging environments.

Why Partner with Woodland Plastics – Woodland Plastics has decades of experience molding for a variety of customer and product end-markets including for product applications exposed to oils, fluids, salts, and moisture.

Metal-to-Thermoset Conversion

Customer Pain Point – Metal components are costly and may require secondary operations such as machining and finishing.

What Thermoset Molding Provides – Consolidation of multiple parts of an assembly. Elimination of costly secondary machining or painting operations.

Why Partner with Woodland Plastics – Woodland Plastics offers integrated manufacturing solutions with support in engineering, tooling, and material selection to efficiently convert customers’ existing metal components or product assemblies to thermoset to drive product performance and lower manufacturing costs.

Lightweight, Cost Efficient

Customer Pain Point – Component assembly needs to be lighter to reduce overall cost of an assembly.

What Thermoset Molding Provides – Lowers component or product assembly weight over metallic applications without compromising product performance.

Why Partner with Woodland Plastics – Woodland assists with customer light-weighting efforts and leverages approved suppliers for tooling and material selection, keeping overall manufacturing costs competitive against metallic or thermoplastic components.

Thermoset Molding Capabilities

Thermoset Material Capabilities

Phenolic Resin


Bulk Molding Compound (BMC): Glass and Mineral Filled
Unsaturated Polyester (UP) & Vinyl Ester
Diallyl Phthalate (DAP)

Molding Processes



Machine Size/ Clamping Force

25 – 500 Tons

Maximum Mold Size

30″ x 44″ x 30″

Number of Cavities

One or Multiple

Production Volume

Medium-Long Run

10,000 units up to 10,000,000+

Feeding Systems

Hopper (Phenolic)

Hydraulic Stuffer (BMC)

Quality Certifications

ISO 9001:2015

Real-Time Manufacturing Systems

Enterprise IQ: Manufacturing ERP Software System

Automotive Applications

Headlamp Reflectors
Powertrain Components
Solenoids & Caps
Transmission Components

Gear Housings
Heat Shields
Thrust Washers
Valve Housings

Appliance Applications

Covers & Lids
Outdoor Grill Handles & Components
Vent Trims

Control Panels
Motor Housings
Oven & Range Components

Electrical & Lighting Applications

Brush Holders
End Caps
Standoff Insulators

Circuit Breaker Components
Electrical Housings & Enclosures
Electric Motor Components
Slip Rings
Starter Caps

Industrial & Other Applications

Fuel Cell Components
Load Rings
Pump Housings

Frac Balls
HVAC Components
Pump Housings
Wind Turbine Components

For questions on Woodland Plastics’ thermoset molding capabilities, please contact us via email at or reach us via phone at (630)-543-1144.