Plastic Part Manufacturing

Fast. Precise. US-Based. Rely on 30 years of plastics industry expertise and 150+ presses to keep your launch on track. 

LET’S GET STARTED

Shape your Future with Efficient Part Production

Transform concepts into commercial-ready parts without the usual headaches. From initial design to final production, stay on schedule and within budget whether you need standard injection molding, low-pressure structural foam, specialized gas-assist techniques, or any of our processes. 

PLASTIC INJECTION MOLDING

PLASTIC INJECTION MOLDING →
LOW PRESSURE STRUCTURAL FOAM MOLDING

LOW PRESSURE STRUCTURAL FOAM MOLDING →
Two white plastic objects are sitting on a gray surface

GAS ASSIST MOLDING →
GAS ASSIST MOLDING

THERMOFORMING →
ROTATIONAL MOLDING
COMPRESSION MOLDING

Quality + Compliance

You can be confident that our processing partners are ISO 9001 certified. Materials are NSF, FDA, USDA, UL, and USP Approved. 

How CPS Serves Your Needs

Large sizes, no problem:  Access processors that routinely mold 10 ft and 300 lb parts, so scale is never a surprise.

Customer Advocacy: Your program is championed inside each plant to lock in machine time and keeps schedules intact.

Cost Control: Every quote breaks out costs, and CPS negotiates best value rates on tooling and resin on your behalf.

Photo courtesy of partner 20/20 Custom Molded Plastics

Need process selection help? Start here.

  • Can you help me choose the best manufacturing process for my plastic parts?

    Yes. Each project is a bit different, but generally we match part size, wall thickness, annual volume, and cosmetic needs. We’ll select the best process for your parts and your performance needs.

  • Thermoforming vs. injection molding vs. structural foam - when does each win?

    Thermoforming is best for large plastic parts with lighter weight demands. Injection molding rules when tight tolerances and complex geometry are mandatory. Structural foam produces large parts that are lightweight and can withstand loading.

  • What types of plastic molding processes do you offer?

    Structural foam, injection, gas assist, thermoforming, rotational, and compression molding are all offered through CPS partners.

Question Answer
Can you help me choose the best manufacturing process for my plastic parts? Yes. Each project is a bit different, but generally we match part size, wall thickness, annual volume, and cosmetic needs. We’ll select the best process for your parts and your performance needs.
Thermoforming vs. Injection Molding vs. Structural Foam - when does each win? Thermoforming is best for large plastic parts with lighter weight demands. Injection molding rules when tight tolerances and complex geometry are mandatory. Structural foam produces large parts that are lightweight and can withstand loading.
What types of plastic molding processes do you offer? Structural foam, injection, gas assist, thermoforming, rotational, and compression molding are all offered through CPS partners.

Materials Matter

Select from commodity and engineered polymers and compounds. Or choose certified sustainable resins that are biobased, mass-balance, recycled, or compostable - and track every pound through an ISCC PLUS chain of custody.

Anticipate my needs proactively

Custom Plastic Solutions acts as a liaison between my molder and me (the buyer) to keep communication flowing. They proactively anticipate my needs to ensure that nothing ever slips through the cracks.


–- Engineering Manager, Industrial OEM

Get Design Support

Shorten launch cycles with early DFM reviews, MoldFlow analysis, and rapid prototypes. CPS teams with Aries 3D for digital design and plastic prototyping services, giving you clear feedback before steel is cut — whether you're refining gas assist channeling, structural foam rib patterns, or compression-mold stack-ups.

Frequently Asked Questions

  • Are you a manufacturer or a broker?

    CPS is your independent sourcing partner—aligning you with proven processors while you keep full cost visibility.

  • What advantages does injection molding offer for large plastic parts?

    Molding machines from 100T to 8,000T deliver tight tolerances and repeatability on oversized or high-volume runs.

  • Can I start with a small run?

    Yes. CPS will match you with processors that accept pilot or bridge volumes; if a perfect match isn’t available, you’ll receive vetted alternatives.

  • How fast can I get prototypes?

    3D-printed or aluminum-tool prototypes ship in days, letting you validate fit, finish, and function before committing to steel.

  • What plastic fabrication options do you offer beyond molding?

    CPS coordinates trimming, machining, welding, decorating, and assembly to deliver finished custom plastic parts ready for the line.

USA-Based Production Backed by 30 Years of Unbiased Insight

Bring us your concept and tap three decades of plastics and materials know-how across every major industry. We listen first, recommend the optimal material-process match, and manage manufacturing in the U.S. to keep your project on schedule and on budget. Expect same-day answers and commercial-ready parts without the guesswork.

START YOUR PROJECT →

Every successful program begins with a conversation. Give us a call to get started.