Capabilities & Services

St Louis Plastic Injection Molding

The Toolroom is a Midwest company specializing in St Louis plastic injection molding services using a variety of resins on industrial molding machines. Our in-house plastic molding services provide us with the ability to sample/validate newly built molds, tools with engineering changes, and molds built by our partners.

Custom Plastic Molding Overview
Molding (sometimes referred to as moulding in some areas of the world) has been around for ages, having seen a remarkable transformation thanks to evolving scientific and technological innovations. Custom molds can be created primary via electrical discharge machining (EDM) also known as spark erosion or by means of traditional machining methods. Scientific or decoupled molding has replaced single pressure molding techniques of the to create cycle to cycle or shot-to-shot consistency. In general, the fewer number of cavities, the lower the initial manufacturing costs however detailing intricacy and tolerance requirements among other factors all impact cost as well. As expert mold makers, we provide both the design, manufacturing, and quality to create the right output, all backed by our experience. Check out the official Wikipedia link for a quick overview of plastics injection molding!

Equipment & Infrastructure
Our custom molding department has several presses ranging in size from 660 metric tons down to 25 tons. In fact, The Toolroom has over 2,890 metric tons of molding equipment servicing customer requirements. We’ve even added a robot to our 610 Toshiba for increased efficiency and automation, providing businesses seeking a St Louis plastic injection molding company with even more value!

Flexible Small or Large St Louis Plastic Injection Molding Runs
Need very small or very large sized mold runs? Our elastic demand approach enables you to take advantage of flexible options with short runs, production runs, and dual shot runs. While our molding department serves as an off-shoot of our molding shop, it also as a stand-alone operation giving us an added benefit of being a flexible custom molder.

Secondary Operation Capabilities:

  • sonic welding
  • solvent welding
  • heat staking
  • heat transfer labeling
  • hot stamping
  • secondary assembly
  • product packaging

Plastic Resins Ran:

ABS
Acetal
Acrylic
Noryl
Nylon
Polycarbonate
Polypropylene
Polyester
Polystyrene
Alcryn
EVA
Crystal Styrene
Polysulfane
PVC
Rynite
Ryton
SAN
Santoprene
Elvax
K-Resin
LDPETPE
Urethane
Valox
Versalloy
Various Filled Resins

Plastic Molding Machines:

  • (2) 660 Metric Ton Kawaguchi (750 U.S. Ton)
  • (1) 610 Ton Toshiba (553 Metric Tons)
  • (1) 150 Ton Toyo (136 Metric Tons)
  • (1) 90 Ton Toyo (82 Metric Tons)
  • (1) 85 Ton Cincinnati (77 Metric Tons)
  • (1) 25 Ton Newberry (23 Metric Tons)

Service Area
Our full-service plastics injection molding can work for any size business!  Centrally located in the Midwest outside of St Louis, Missouri, we’re able to deliver plastic injection molding to anyone in the United States and around North America. No need to offshore; our plastic injection molding company provides reliable, established, and quality-focused services to fulfill your plastic injection needs!

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