• Welcome
    to GI Plastek

  • Structural
    Foam Molding

  • Gas Assist

  • Large Part
    Injection Molding

  • Custom Packaging
    and Bar Coding

  • Custom
    Color Matching

  • Markets
    Military, Medical, Industrial, Energy

Plastic Injection Molding - Medium to Large Parts
Structural Foam & Gas Assist Molding

Custom Injection Molding

GI Plastek has plastic injection molding presses ranging from 220 to 1,574 tons. Additional in-house services include product development, engineering, assembly, painting, EMI shielding, applied graphics, and printing. We will work directly with you, or through your design firm, to ensure your product is optimally designed.

Post Molding Services

• In-house paint facility
• Custom color matching
• Walk-in paint booths
• Hot stamping, silk screening, decals
• EMI/RFI shielding
• Welding - adhesive, solvent, ultrasonic
• Assembly
• Heat staking
• Custom packaging, bar coding
More On Secondary Processes . . .


• Medical & Diagnostic Equipment
• Water & Waste Management
• Industrial
• Business & Office Equipment
• Construction
• Leisure & Recreation
• Material Handling
• Renewable Energy
More On Markets Served . . .

Structural Foam Injection Molding

Structural Foam molding produces thicker plastic parts with cellular cores and rigid outer shells yielding products with very high strength to weight performance. Benefits include lower weight, lower material cost and greater design flexibility. We offer structural foam parts up to 25 lbs.
More On Structural Foam . . .

Gas Assist Molding

In Gas Assist Molding nitrogen is injected in the plastic to create channels. This results in a light-weight, hollow tube like structure. Benefits include greatly increased strength through design structure, decreased cycle times, reduced material and lower overall costs.
More On Gas Assist Molding . . .

new plant

GI Plastek Invests in new Equipment

GI Plastek Corp has purchased two large tonnage injection molding machines and is installing a new paint line. "In support of our continued growth we have recently purchased new 1100 ton and 500 ton injection molding machines and are starting construction of a new multi-booth mechanized paint line" said Daniel Mills, president and CEO of the NH based injection molder.
More On New Equipment . . .

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