These injection presses are highly automated. The press opens the mold. The operator removes the parts from the cavities, often using compressed air to separate the part from the mold. The mold is closed by the press and the fully automated injection cycle begins. A large screw and ram assembly forces preheated uncured rubber through the injection nozzle, through the mold’s runner system, and into the cavities. The uncured rubber is then forced into the shape of the cavity in the mold. The mold remains closed until the rubber is cured. The injection procedure is used for large parts, particularly part with thin walls and large surface areas.


Mold Design and Fabrication

The molds for our customers’ products are designed and manufactured by independent tool shops with proven records of quality craftsmanship. The process of mold design and manufacture is a joint effort between Mid-States and the tool shop to ensure a mold that is durable, works smoothly and produces a quality product.


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TS16949-Cert-MSRP  IATF 16949-Cert-MSRP (PDF, 331KB)


Rubber Injection Presses

24.875 “X 30.5″, 450 Ton (10)
31.5″ X 39.4”, 750 Ton (4)

Plastic Injection Presses

15.75″ X 14″ 85 Ton Thermoplastic (1)
18″ X 18″ 170 Ton Thermoplastic (1)
18″ X 18″ 230 Ton Thermoplastic (4)

Material Specs
  • Butyl
  • CPE
  • ECO
  • EPDM
  • Fluorocarbon
  • Hydrin
  • Hypalon
  • Natural
  • Neoprene
  • Nitrile
  • PBR
  • Reclaim
  • SBR (Styrene Butadiene Rubber)
  • Silicone
  • TPE
  • Urethane
  • Vamac
Quality Compliance

TS 16949


Durometer: 35 to 95 Shore A, 0 to 100 Shore D
Minimum Thickness: .040 RMA A2 and A3 tolerances

Industries Served

Caster Wheels
Fitness Industries
Industrial Equipment
Material Handling