Your Partner for Quality Injection Molding in Erie, PA

For over 70 years, Port Erie Plastics has been the trusted partner for structural foam and injection molding in Erie, PA. With our manufacturing facilities and warehouses located in nearby Harborcreek, Pennsylvania, we can work closely with you to ensure your products are up to your standards.

When you partner with us, one of our expert plastic engineers will be assigned to your project to ensure the manufacturing process runs smoothly, potentially matching you with alternative resins, and helping design for manufacturability. We want your project to run smoothly and meet all requirements, and we will do what it takes to make that possible.

If you are ready to get started, contact our team today, or learn more about our services below.

What We Can Offer You

Custom and Automated Injection Molding

We specialize in large, complex custom and automated injection molding processes, but we can take on projects of any size. With 90 injection molding machines, we can create parts from 4 grams to 24 pounds quickly and efficiently.

Structural Foam Molding and Extrusion

Our low-pressure structural foam molding machines can produce parts up to 7 ½ feet in length with wall thicknesses between 0.200 inches and 0.500 inches. We create structural foam molded products from polyethylene (PE) or polypropylene (PP) so your products always meet your requirements.

Mold Design and Tooling Transfer

With an in-house tooling room, we can create custom molds for your injection molding projects, including single and multi-cavity molds, stack molds, and hot runners. We also have extensive machining capabilities, including CNC milling, CNC EDM, wire EDM, grinding, turning, and drilling.

Secondary Operations

Our manufacturing process doesn’t have to stop once your product comes out of the mold. With assembly, decorating, warehousing, and distribution capabilities, we can oversee your project from start to finish.


When you are paired with one of our skilled engineers, you can rest assured that you are using the right materials and that your manufacturing process is as efficient as possible. They will also make sure there are no defects in your product, ultimately saving you time and money.

Contact Port Erie for Your Injection Molding in Erie, PA

If you are ready to get started or have any questions, contact our team today.

Other Plastic Processing Capabilities

Plastic Process Type

Structural Foam

Typical Materials

PEX (Polyethylene Crosslink)

Structural Foam Wall Thickness

Over .25 in

Structural Foam Part Length

Up to 7.5 ft.

Structural Foam Part Width

Up to 5 ft.

Structural Foam Part Height

Up to 5 ft.

Structural Foam Part Weight

Up to 150 lbs.

Extrusion Diameter

.375 to 4 in

Extrusion Inspection and Testing

Crosslink testing
Oxidative induction time testing
Hot and cold burst testing
Hot and cold impact testing
100% in-line ultrasonic dimensional inspection
Laser mics

Structural Foam inspection

Large micrometers
Custom go/no-go gaging

Industry Standards

ISO 9000 Compliant
ASQ certified QA staff

File Formats

CAD Readers