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Bulk Injection Molding-Just How is it Done, and What are the Capabilities?

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Bulk Injection Molding-Just How is it Done, and What are the Capabilities?
Limitations?  Not many…

  • Large parts: from 2 oz. to 530 lb.
  • Heavy wall sections: up to 5" thick
  • Complex configurations: Varying cross sections, openings, and internal ribs
  • Low cost tooling: Design, material and manufacture
  • Economical production runs: 50 to 50,000 pieces per year
  • Lightweight parts: 80% lighter than most metals
  • Corrosion resistance: Plastics can operate in severe chemical environments
  • Abrasion resistance: Plastics offer superior abrasion resistance
  • Materials expertise: Over 46 years of molding experience
  • Single-source responsibility: From part design through finished product
  • Molding capacity to 2,500 tons clamping pressure


Making the Switch from Metals to Plastics?

Interested in making the switch from metal parts to plastics, or even multiple smaller plastic parts to one larger part?  The staff at Envirotech Molding and Todd & Associates, Inc can show you how.   Watch our video here


Wall Thicknesses a Concern?

Gone are the days of being relegated to relatively thin-walled injection molded parts (1/4” or less), extremely low porosity thick wall parts (as thick as 5”) are now possible for high stress, high pressure applications. 


Chemical Resistance an Issue?

Specialty engineering resins designed for harsh environments are our specialty, especially in parts converted from metal to plastic.  The material ranges used will accommodate most applications:


Common Resins

  • Polypropylene
  • Nylon 6, 6-12, 12, 11
  • Polycarbonate
  • Polyethylene
  • PVDF (Kynar®)
  • Polyphenylene Sulfide (Ryton®)

Special Resins

  • Acrylic
  • Polyetheretherketone (PEEK)
  • Polyetherimide (Ultem®)
  • Fluoropolymers
  • Thermoplastic Polyurethane
  • Thermoplastic Elastomers
  • Thermoplastic Polyester
  • Polyethersulfone
  • Styrenics

Fillers, Reinforcements, and Additives

  • Glass Fiber
  • Mineral (wolastinite)
  • Carbon/Graphite
  • Calcium Carbonite
  • Glass Bead/Fiber
  • Mica
  • Talc
  • UV Stabilizer

The Next Step?

Contact Todd & Associates, Inc for assistance in commissioning either a new design or making the conversion from a metal part to plastics.  Challenge us with YOUR applications, whether they are in mining, chemical processing, plating, pulp & paper or other materials handling