Large Part Molding

EVCO Plastics specializes in molding large plastic parts, having purchased our first 1,000-ton plastic injection molding machine for large part production in 1982.

Today we operate 30+ large ton plastic injection molding machines, from 1,000 to 3,500 tons, at our various locations in the United States, Mexico and China. Each facility is equipped with the proper auxiliary equipment to manage and run large part work efficiently and effectively.

Coupling this equipment with our engineering, in-house mold building and plastic materials experience, EVCO Plastics is now a global leader in plastic injection molding of large plastic parts, serving a wide range of industries and applications.


Large part plastic injection molding capabilities include:

  • Robotics and part handling systems for improved quality and cycle time
  • Engineered and commodity grade plastic resins
  • Gas assist injection molding
  • Large mold building expertise
  • High-volume production
  • Highly cosmetic parts
  • Tight tolerances
  • Complex parts and assemblies
  • Highly aesthetic parts with molded-in color
  • Large parts for structural applications
  • Global systems and locations
  • Manufacturing flexibility, logistics and efficiencies
  • Full range of value-added and secondary finishing operations

3,500 ton plastic injection molding machine in Oshkosh, Wisconsin


Component consolidation and technology advancements continue to expand the range of applications and industries employing EVCO Plastics injection molded large plastic parts, including:

  • Outboard marine motor covers
  • Agricultural equipment, ATV and off road vehicle hoods and fenders
  • Lawn and garden riding mower hoods
  • Plastic pallets
  • Housings
  • Appliance components and panels
  • Instrument panels
  • Impeller and fan blades
  • Irrigation components

Early supplier involvement is a very important part of the engineering and design process for large part injection molding. Working together in the design process helps ensure that all your needs are met and saves time and investment costs. Working with you, EVCO Plastics design engineers focus on design for manufacturability and assembly. EVCO Plastics strictly follows all formal procedures for Part Production Approval Process (PPAP) submittals for customers requiring PPAP’s for their injection molded large plastic parts.

When it comes to large plastic parts, shipping, part handling, cosmetics and cost are some of the challenges. EVCO Plastics experience, equipment, technology and innovation address these challenges! Our large number and variety of large ton plastic injection molding presses located at our facilities in the United States, Mexico and China enable us to manufacture and deliver large plastic parts on time and cost effectively.

EVCO Plastics’ experience with design and manufacture of large plastic parts and assemblies, material selection, highly cosmetic parts, component consolidation, complex plastic parts, large part mold building, gas assist injection molding, in-mold decorating and labeling and other integrated operations, contribute additional efficiencies, cost savings and higher quality large parts.


EVCO Plastics expertise includes custom plastic injection molding of large parts



2,500 ton plastic injection molding machine in Monterrey, Mexico, for large part molding

When plastics matter to your business, partner with EVCO.
Where innovation takes form.