Plastic injection molding companies in Wisconsin
Wisconsin has 107 plastic injection molders in EPA records, facilities that list codes for plastic parts and products made by molding, including injection-molded components. The most are in Manitowoc, Sheboygan and Baraboo. That is 3% of the 3,730 such facilities nationwide, and Wisconsin ranks #11 of 49 states.
- Product
- Plastic injection molding companies
- Facilities
- 107
- State rank
- #11
- NAICS
- 326121, 326122, 326199
- Revised
- November 1, 2026
Facilities in Wisconsin
These are active facilities in EPA's ECHO database that list a code for plastic parts and products made by molding, including injection-molded components. The 40 shown first are the ones with the most EPA program records, which usually means the larger sites.
| Facility | City | What EPA lists |
|---|---|---|
| Ecc Corrosion Inc | Wisconsin Rapids | All Other Plastics Product Manufacturing |
| Mastermold LLC | Johnson Creek | All Other Plastics Product Manufacturing |
| Custom Pultrusions Inc | Baraboo | All Other Plastics Product Manufacturing |
| Bemis Manufacturing | Sheboygan Falls | All Other Plastics Product Manufacturing |
| Fiberdome Products, LLC | Lake Mills | All Other Plastics Product Manufacturing |
| Fiberpro Inc DBA Advanced Fiber Products | La Crosse | Plastics Pipe and Pipe Fitting Manufacturing |
| Gpi Corp | Schofield | All Other Plastics Product Manufacturing |
| Carfair Composites USA Inc | Gillett | Plastics Pipe and Pipe Fitting Manufacturing |
| Corrim Company Frp LLC | Oshkosh | All Other Plastics Product Manufacturing |
| Carfair Composites USA Inc | Wausaukee | All Other Plastics Product Manufacturing |
| Custom Fiberglass Molding | Weyauwega | All Other Plastics Product Manufacturing |
| Feradyne Outdoors | Superior | All Other Plastics Product Manufacturing |
| Five Star Coatings Group | Twin Lakes | All Other Plastics Product Manufacturing |
| Five Star Fabricating Inc | Twin Lakes | All Other Plastics Product Manufacturing |
| National Manufacturing Group - Franksville | Franksville | All Other Plastics Product Manufacturing |
| Tulip Richardson Manufacturing | Milwaukee | All Other Plastics Product Manufacturing |
| Amcor Healthcare Packaging Inc | Oshkosh | All Other Plastics Product Manufacturing |
| Badger Color Concentrates Inc | Mukwonago | All Other Plastics Product Manufacturing |
| Clack Corp | Windsor | All Other Plastics Product Manufacturing |
| Franklin Electric Fueling Systems Deforest | Deforest | All Other Plastics Product Manufacturing |
| Intek Medford, LLC | Medford | All Other Plastics Product Manufacturing |
| Jacobson Paint Finishes LLC | Manitowoc | All Other Plastics Product Manufacturing |
| Kubin-Nicholson | Milwaukee | All Other Plastics Product Manufacturing |
| Lavelle Industries Inc | Burlington | All Other Plastics Product Manufacturing |
| Mastermold LLC | Mauston | Unlaminated Plastics Profile Shape Manufacturing |
| North American Pipe Corp | Janesville | Plastics Pipe and Pipe Fitting Manufacturing |
| Northern Engraving Corp | Holmen | All Other Plastics Product Manufacturing |
| Phillips Plastics Corp - Custom I | Phillips | All Other Plastics Product Manufacturing |
| Phillips Plastics Corp Custom II | Phillips | All Other Plastics Product Manufacturing |
| Phillips-Medisize, LLC | Hudson | All Other Plastics Product Manufacturing |
| Pregis Sharp Systems LLC | Sussex | All Other Plastics Product Manufacturing |
| Premold Corp | Oconomowoc | Unlaminated Plastics Profile Shape Manufacturing |
| Protect-All | Darien | All Other Plastics Product Manufacturing |
| Seaquist Closures | Mukwonago | All Other Plastics Product Manufacturing |
| Spartek Inc | Sparta | Unlaminated Plastics Profile Shape Manufacturing |
| Tekra Corp Coating/laminating Div | New Berlin | All Other Plastics Product Manufacturing |
| Advanced Chip And Circuit Materials | Sparta | All Other Plastics Product Manufacturing |
| Aeroquip Corp | Wausau | Unlaminated Plastics Profile Shape Manufacturing |
| Amalga Composites Inc | West Allis | All Other Plastics Product Manufacturing |
| Asyst Technologies LP | Kenosha | All Other Plastics Product Manufacturing |
Industry codes are reported by facilities to EPA programs and are not checked here. A few listings may be repair shops, distributors or recyclers. How these records work.
Where they are
- Manitowoc: 5
- Sheboygan: 5
- Baraboo: 4
- Milwaukee: 4
- Germantown: 4
- Medford: 3
By product code
- All Other Plastics Product Manufacturing (NAICS 326199): 33 of those shown
- Unlaminated Plastics Profile Shape Manufacturing (NAICS 326121): 4 of those shown
- Plastics Pipe and Pipe Fitting Manufacturing (NAICS 326122): 3 of those shown
All plastics and rubber manufacturing in Wisconsin: 176 facilities and Census job counts.