Plastic Injection Molding Process

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What sets us apart? Our ability to work with advanced materials, our integration of complex assemblies, and our deep understanding of overmolding and insert molding. With our cutting-edge technology, a vast range of materials, and a commitment to quality, we stand out as the go-to partner for all your injection molding needs.

The Plastic Injection Molding Process

At AlignMFG, we harness the power of injection molding to create durable, high-precision parts. Here’s how we do it:

  1. Design Collaboration: Our engineers work closely with you to design the perfect mold for your part, ensuring that every detail meets your specifications.
  2. Material Selection: We guide you in choosing the best materials based on your product’s requirements, balancing performance, durability, and cost.
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  1. Mold Fabrication: Using state-of-the-art machinery, we fabricate high-precision molds that guarantee consistent quality with every production run.
  2. Injection Molding: With our advanced injection molding machines, we inject molten material into the molds, rapidly cooling and solidifying them into the desired shape.
  3. Quality Assurance: Every part undergoes rigorous testing to ensure it meets our strict quality standards before it reaches your hands.

Materials We Work With

We specialize in a broad spectrum of plastics, each selected for its unique properties:

  • PP (Polypropylene)
  • PS (Polystyrene)
  • PPS (Polyphenylene Sulfide)
  • PC (Polycarbonate)
  • PC-ABS (Polycarbonate-Acrylonitrile Butadiene Styrene)
  • ABS (Acrylonitrile Butadiene Styrene)
  • PA66 (Nylon 66)
  • POM (Polyoxymethylene)
  • SAN (Styrene Acrylonitrile)
  • PET (Polyethylene Terephthalate)
  • PBT (Polybutylene Terephthalate)
  • PEI (Polyetherimide)
  • PVC (Polyvinyl Chloride)
  • PA (Nylon)
  • HDPE (High-Density Polyethylene)

Specialty Materials:

We take pride in our ability to work with advanced materials like UHMW (Ultra-High-Molecular-Weight Polyethylene) and glass-filled nylon. These materials offer superior strength, wear resistance, and durability, making them ideal for demanding applications.

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Assembly Capabilities

Our expertise extends beyond molding parts; we excel in integrating these components into larger assemblies. Whether it’s a complex multi-part product or a simple two-piece assembly, our injection molding process is designed to seamlessly fit into your overall production strategy. 

We ensure that each part is precisely engineered to integrate smoothly, reducing the time and cost associated with post-molding assembly.

Overmolding & Insert Molding

We specialize in overmolding and insert molding, techniques that allow us to bond different materials together during the molding process. This creates components with enhanced functionality and durability. Some examples include:

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Polymer over metal

Ideal for parts requiring a strong metal core with a plastic exterior.

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Rubber over polymer

Perfect for creating parts that need flexibility and durability.

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Rubber over polymer over metal

Combines the best of all materials for high-performance applications.

These techniques allow us to create complex, multi-material components in a single, efficient molding process.

The Benefits of Choosing AlignMFG

Choosing AlignMFG for your injection molding needs comes with a host of benefits:

  • Quality & Precision: Our advanced machinery and rigorous quality controls ensure every part meets the highest standards.
  • Cost-Effectiveness: Our process is designed to minimize waste and reduce costs, offering you the best value for your investment.
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  • Construction: Robust, high-performance components built to endure the tough demands of construction projects.
  • Truck & Trailer: Reliable parts that deliver long-lasting performance in heavy-duty applications.
  • Industrial: Versatile, high-strength components tailored for a wide range of industrial applications.

Choose Align MFG for Shell Molding


At AlignMFG, we are dedicated to providing injection molding solutions that enhance the performance and reliability of products across these key industries.