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Custom Plastic Parts Manufacturing

Let’s turn your custom plastic part into a reality.

With over 35 years of experience in the plastic parts manufacturing industry, we are able to meet and exceed the highest expectations and tightest schedules.

Let’s turn your custom plastic part concept into a reality! Advantages of working with Pioneer Plastics include:

We'll turn your investment to substantial profit with an expertly-crafted prototype and final design.


We Design It

With over 35 years of plastic molding part design & mold design experience, Pioneer has the background, expertise, and determination to create the best version of your product and build the mold to produce it.


We Build It

Our skilled tool and die craftsmen use lathes, mills, or CNC machining to build the mold at our in-house tooling shop, Collins Engineering, Inc. In-house plastic machining & tooling saves you time and money with quick design modifications and a mold guarantee.


We Mold It

We take that mold and use plastic injection to produce your plastic products. In the molding process, injection molding machines force liquid resin into the mold cavity to form the part. Pioneer currently operates 25 modern plastic injection molding machines ranging from 75-ton to 1200-ton clamp force.


We Inspect It

Pioneer utilizes a rigorous quality control system when testing plastic products for defects or imperfections. Only the highest quality plastic molded parts will be packaged after the quality control testing process.​ All molds at Pioneer Plastics are on a preventative maintenance schedule between production runs, so your mold always stays in excellent condition.


We Ship It

With a geographically centrally-located headquarters, we ship your finalized plastic products directly to your consumers and retail partners. Our 50,000+ square foot production and distribution facility is located in the heart of the Midwest, just a few hours from Indianapolis, St. Louis, Louisville, and Nashville. We have excellent access to all major transportation networks, allowing us to ship your custom plastic parts efficiently.


You Love It

Once you’ve worked with Pioneer, you won’t want to work with anyone else. As a turnkey injection molder, we’re equipped to handle every step of the plastic fabrication process.

“There is a Reason for the Resin.” We use the highest quality materials. From commodity grades to engineered thermoplastics, our engineering team will pick the best material for your project.

Our Sales and Engineering teams have over 175 years of combined expertise in project management and plastic part manufacturing. 

Our industry experts are more than capable of educating you on the design and manufacturing process so that you feel comfortable making the decision to move forward with custom injection molding. 

We take pride in our personal relationships with our customers, many of which have been with us for over 30 years.

We are the #1 supplier of replacement service parts to the appliance industry. We specialize in tool storage and retrieval for reduced lead times – which saves you money!

Pioneer has numerous clients that have been with us 20+ years, some over 30 years.​

We place a high demand on client retention. We understand how difficult customers are to find within the injection molding industry, and how important they are to keep. We strive to go above what's required to make sure our clients know we value their business.

Food Industry

Our custom molded plastic parts enable our customers to prepare their food faster and more consistently.

Food Packaging Industry

We provide clear plastic molded boxes for companies that produce candy, nuts, and honey.


We use custom molding to create display cases for sports memorabilia, toy cars, collectibles, and other clear plastic containers.

Storage Organization

We create a variety of clear plastic containers used to store and organize, small house hold items, tools, craft supplies, etc.

Home Appliance Industry

We use custom plastic injection molding to create replacement parts for many home and industrial services.

Custom Plastic Parts FAQs

Custom injection molding is the most practical cost-effective solution for scaling the production of large quantities of custom plastic parts.  Injection molding allows for even the most complex plastic parts to be produced quickly.

Plastic injection molding is a manufacturing process used to produce large quantities of plastic parts with high precision and consistency. The process involves melting plastic pellets, also known as resin, then injecting the molten material into a mold under high pressure. After the melted resin is allowed to cool and harden in the mold, the custom plastic part is ejected then inspected.

 A trusted plastic part manufacturer such as Pioneer Plastics, has in house engineers that can take your concept from start to finish. We will help design the custom plastic part and produce a prototype before we build the mold and start production.

While both injection molding and 3D printing are popular manufacturing methods, each has its own unique advantages. Injection molding can produce complex plastic parts with incredible structural strength unlike 3D printing. Injection molding also allows for a wider range of engineering grade plastics.

Determining if injection molding is the right process for a custom plastic part depends on several factors, including the size and complexity of the part, the required material properties, and the production volume needed.

Some key consideration are:

  1. Part size and complexity: Injection molding is best suited for producing parts with complex geometries or intricate details that would be difficult to achieve with other manufacturing processes. 

  2. Material properties: Injection molding works well with a wide range of thermoplastic materials, but not all materials are suitable for this process. 

  3. Production volume: Injection molding is most cost-effective at high volumes due to the initial tooling costs required to create the mold. If you only need a small quantity of parts, another manufacturing process may be more appropriate.

  4. Tolerance requirements: Injection molding can achieve very tight tolerances and high precision in part dimensions, making it ideal for applications where accuracy is critical.

  5. Lead time: The lead time for injection mold tooling can be longer than other manufacturing processes due to design and fabrication requirements.

The time required to build a new mold for a custom plastic part can vary significantly based on factors such as the part’s complexity, the number of cavities and parts in the mold, as well as its size. Typically, this process can take anywhere from 2 to 26 weeks.

We are committed to creating high quality custom plastic parts for our customers. Our molds are all on a preventive maintenance schedule to help prevent unplanned downtime and delays.

The cost of injection molds can range from $10,000 to over $100,000, depending on the size and complexity of the mold. If you only need a small quantity of custom plastic parts, say 1,000 pieces or less, investing in an injection mold may not be the most cost-effective solution for your manufacturing needs.

Bringing your production back to the United States through re-shoring provides you with greater control over your manufacturing process. Global events in recent times have made supply chains across the world unpredictable and unreliable.

By relocating your custom plastic part production to a trusted injection molding company in the U.S., you can benefit from increased protection for your designs, higher product quality, and lower distribution costs.

Choosing the right custom plastic part manufacturer requires careful consideration of various factors. Here are a few key things to keep in mind:

  1. Expertise: Look for a manufacturer with experience and expertise in producing the type of parts you need.

  2. Quality: Ensure that the manufacturer has a reputation for delivering high-quality products that meet your specifications.

  3. Capabilities: Make sure the manufacturer has the necessary equipment, technology, and resources to produce your parts efficiently and effectively.

  4. Communication: Choose a manufacturer who is responsive and communicates clearly throughout the production process.

  5. Pricing: Compare pricing from different manufacturers to ensure you are getting a fair price for your custom plastic parts.

  6. Turnaround time: Consider the lead time required by each potential manufacturer to ensure they can meet your production timeline.

Contact us today to get started on your project.
Please fill out the form below, chat with us, or call 1-800-951-1551.

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