

PTI Engineered Plastics
Prototype & Low-to-Mid Volume Plastic Injection Molding
PTI delivers precision plastic injection molding for low to medium volume production runs. With state-of-the-art equipment and decades of experience, they transform your designs into high-quality plastic components.
About
PTI Engineered Plastics, located in Macomb, Michigan, is a leading full-service injection molding and tooling company specializing in custom plastic components for the medical, defense, automotive, and industrial markets. With in-house design, engineering, and tool-building capabilities, PTI provides complete product development support from prototype through production. The company offers precision injection molding—including cleanroom manufacturing, insert molding, and rapid prototyping—along with advanced assembly, decorating, and finishing services. As an ISO 13485 and ISO 9001 certified, FDA-registered facility, PTI is recognized for its focus on quality, innovation, and speed-to-market for complex, highly regulated applications.
Key Specialties
Certifications & Compliance
ISO 9001
Quality Management System
Issued by: ISO
ISO 13485:2016
Medical Device Quality Management
Issued by: ISO
AC 8160
MedAccred
Issued by: PRI
Equipment & Capabilities
60 Injection Molding Machines
Plastic Injection Molding
Capabilities
- • High Temperature Molding
- • Insert Molding
- • Over Molding
- • ISO Class 8 Cleanroom for Molding & Assembly
Specifications
- Tonnage Range
- 35-300 tons
- Shot Size
- 0.09 to 25.56 oz.
Prototype Injection Molding
Rapid Prototyping
Capabilities
- • Fast turnaround prototypes
- • Design validation
- • Functional testing
- • Small batch production
Specifications
- Time to Market
- Average 3-5 weeks
- Part Runs
- Prototype to Large Volume
Design for Manufacturing
Engineering Services
Capabilities
- • Design optimization
- • Cost reduction analysis
- • Material selection
- • Manufacturability review
- • DFM consultation
Specifications
- Service Type
- Engineering Support
- Expertise
- Injection Molding & Tooling
- Availability
- Full-time support