What Materials Are Used in Plastic Injection Molding?

Plastic injection molding is compatible with an extensive range of thermoplastic materials, each offering specific properties for different applications:

Commodity Thermoplastics:

• Polypropylene (PP) – Excellent chemical resistance, lightweight, low cost. Used in packaging, automotive, and consumer goods.
• ABS (Acrylonitrile Butadiene Styrene) – Good impact strength, surface finish. Ideal for electronics housings, automotive interiors, toys.
• Polyethylene (PE) – Flexible, chemical resistant, FDA compliant grades. Used in containers, caps, packaging.
• Polystyrene (PS) – Low cost, good clarity. Used in disposable items, packaging.

Engineering Thermoplastics:

• Polycarbonate (PC) – Exceptional impact strength, optical clarity. Used in safety equipment, lenses, medical devices.
• Nylon (PA6, PA66) – High strength, wear resistance. Ideal for gears, bearings, structural components.
• Acetal/POM – Low friction, dimensional stability. Used in precision mechanical parts.
• PBT – Excellent electrical properties. Used in electrical connectors, automotive.

High-Performance Thermoplastics:

• PEEK – Extreme heat resistance (up to 250°C), chemical resistance. Aerospace, medical implants.
• Ultem (PEI) – High strength, flame retardant. Aerospace, electronics.
• PPS – Chemical resistance, dimensional stability. Automotive, industrial.
• LCP – Thin-wall capability, excellent flow. Micro-connectors, electronics.

Specialty Materials:

• TPE/TPU – Rubber-like flexibility with plastic processability. Grips, seals, overmolding.
• Glass-Filled Grades – Enhanced strength and stiffness.
• Flame-Retardant Grades – UL94 compliance for electronics.

We help you select the optimal material based on mechanical requirements, environmental conditions, regulatory compliance (FDA, UL, RoHS), and cost objectives.