Polymer Corporation/Polymer Liquid Resin Casting/
Polymer Marine:

180 Pleasant Street Rockland, MA 02370
781-871-4606



Polymer Injection Molding/Gun Valley Molders:
96 Palmer Road
Monson, MA 01057
413-267-5524







Production Processes ...


Injection Molding



Polymer offers low-to-medium volume injection molding for highly-engineered plastic parts. Since we can provide tooling and molding both domestically and from our Asian locations, we are able to optimize each project to our customers' particular needs. Our prices are highly competitive, our lead times are compressed, and our engineering support, customer service and project management are without equal. Our low volume customers enjoy the same professionalism and attention to detail that customers with higher volume requirements normally expect. Customers especially appreciate our flexibility, creative solutions, and turn-on-a-dime attitude. Polymer tailors deliveries to the way our customers want to do business. We even offer complete product assembly and fulfillment programs. We feature:

  • 21 state-of-the-art microprocessor-controlled molding machines

  • 50 to 550 ton presses and 1 to 91 oz. shot sizes

  • Mattec process control monitoring

  • Class 100,000 temperature and humidity controlled clean room environment

  • Wide range of engineering grade resin capability, from structural foam grades of Noryl to glass-filled nylons, Ultem, ABS, acrylics, polycarbonates, and more

  • Overmolding, insert molding and in-molding decorating

  • Full complement of in-house secondary and finishing capabilities, including machining, painting, EMI/RFI shielding, screen and pad printing, heat staking and sonic welding

  • Product assembly and fulfillment programs

  • Domestic and Asian tooling and extensive in-house tooling support

Additionally, Polymer's Gun Valley Molders™ division, based in Polymer's Monson, Massachusetts facility, is a leading producer of synthetic/plastic components for outdoor sports applications. We are widely viewed as the technology/innovation leader in this market. Products include gunstocks, recoil pads, trigger guards, and internal components for recreational firearms, shotgun wads and sabots, crossbow stocks and archery components.

Click here to go to Gun Valley Molders' website.