At Harbor Plastics, we pride ourselves on being a trusted provider of high-quality custom plastic injection molding services tailored to meet the diverse needs of our clients. Located in Minnesota, we bring decades of industry expertise, cutting-edge technology, and a customer-first mindset to every project—delivering precision, speed, and reliability in every molded component.

Advanced Injection Molding Capabilities

Harbor Plastics is equipped with state-of-the-art plastic injection molding machines capable of handling shot sizes up to 51 ounces, with clamping forces ranging from 60 to 350 tons. This range allows us to manufacture parts in a variety of sizes and complexities, from intricate components to larger, heavy-duty items.

We specialize in short-run, low, and medium-volume production, offering quick lead times that set us apart in the industry. In fact, we can turn around projects in as little as two days. For clients with more extensive needs, we are equally equipped to manage long-run, high-volume production with rush services available upon request.

Lean Manufacturing & Lights-Out Operations

Efficiency is at the heart of everything we do. Our team is committed to lean manufacturing principles to minimize waste, reduce costs, and maximize productivity. With a Six Sigma certified Green Belt on staff, Harbor Plastics ensures quality and continuous improvement are built into every step of our operations.

We also operate using lights-out manufacturing, with automated systems that allow our injection molding machines to run 24 hours a day, five days a week—maximizing uptime and delivering consistent results without interruption.

Diverse Product Applications

Our custom injection molding solutions support a wide range of industries and applications. Harbor Plastics has manufactured components for:

• Consumer products
• Hardware
• Hunting equipment
• And much more

From concept to final product, we work closely with our clients to develop tailored solutions that meet exact specifications and performance standards.

Serving Clients Across the Globe

While based in Minnesota, Harbor Plastics proudly serves a global customer base, offering world-class design, engineering, and manufacturing support to international partners. We are more than just a molding service provider—we are a collaborative partner in your product development journey.

Contact Harbor Plastics Today

If you're looking for a reliable partner for your Minnesota plastic injection molding needs, look no further than Harbor Plastics. Whether you're launching a new product or scaling up production, our team is ready to deliver the precision, speed, and quality your project demands.

Contact us today to learn more about how our advanced injection molding services can help bring your vision to life.