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Injection Molding

Injection Molding Overview

Injection molding is a forming process where molten material is injected into a mold and then cooled to form the desired end product. Injection molding is possible with several polymers (thermoplastics), including polymers produced with glass or metal additives. MW Components produces injection molded parts for several industries and applications using one or more injection molding processes—overmolding/insert molding, reel molding, and micro molding. These processes are most often used to create plastic optics and other injection molded parts for medical molding applications, though they can be used to mold polymers for a variety of industries.

In addition to the precision production of custom parts, our East Providence facility offers many additional services onsite, including analysis and testing like mold flow fill analysis, medical IQ/OQ/PQ validations, ultrasonic welding, FDM 3D printing (PLA, PPA, PC), and in-house toolroom for mold repairs and fabrication. We even offer in-house assembly and packaging.

Have questions about injection molding services? Ask an MW expert to learn more about the services we offer.

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Injection molding services

Injection Molding Services

  • Overmolding and insert molding, Over-molding and insert molding
    Overmolding / Insert Molding

    We provide automated overmolding and insert molding producing a variety of products, like connectors, impellers, and stators for various industries, including medical, industrial, aerospace, and more.

  • Reel to reel molding, Reel-to-reel molding
    Reel-to-Reel Molding

    Reel-to-reel molding is a polymer molding process where insert material is dispensed onto a continuous strip fed between two reels to form a finished product.

  • Micro molding and micro injection molding
    Micro Molding / Micro Injection Molding

    MW Components produces custom plastic components and assemblies for micro-molding challenges using highly precise technique that ensure quality within micro tolerance ranges. Our process allows us to achieve consistency from a single part to production runs into the millions.

Custom Injection Molding

MW Components produces a variety of custom injection molded parts fit for several industries and applications, including medical, automotive, industrial, and aerospace. We even offer biomedical resin development for custom projects. We've also been able to replace glass components with plastic for optical purposes, reducing expensive material costs. Our experts design for manufacturability and scale and have extensive industry knowledge and experience, including experience with specialty materials including biomaterials, metal replacement polymers, and custom compounded resin with fillers like barium sulfate, bismuth trioxide, fire retardants, and lubricants.

For more information on our capabilities for custom injection molding, review our Custom Injection Molding Information Sheet.

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Bioresorbable resins

Custom Injection Molded Plastic Parts

Automotive Components

  • Thermal Latches
  • Thermistor Supports
  • Screen Solenoids
  • Spring Holders

Medical Components

  • Bioresorbable Stents
  • Cartridge Holders & Pushers
  • Connectors
  • Distal Caps
  • Implantable Components

Industrial Components

  • Clutch Retainers
  • Fiber Optic Connectors
  • Flexible Boots
  • Impeller
  • Pressure Sensors
  • Terminal Assemblies
  • Threaded Fluid Control Components
  • Overmolded Connectors

Aerospace & Defense Components

  • Insulators
  • Lens Arrays
  • Optical Light Guides

Industries Served

MW Components works with various industries to produce products that are manufactured using injection molding. Some examples are listed here.

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