Rapid Prototyping and
Low Volume Manufacturing Services
425 Main Street, Gardner, MA 01440 / Ph: 978.632.3700 Fx: 978.632.3777
Mack Prototype has achieved a reputation as the premier source for high quality polyurethane molding through continuous research and attention to detail. Polyurethane molding is the precision alternative to injection molding, RIM, structural foam molding, or machining. Especially effective in low volume applications of 3 - 100 parts, with first parts in as little as one week. Typical deliveries range from 2 to 4 weeks.
Conventional polyurethane resin is injected at low pressure into the RTV mold and allowed to cure for 2 - 12 hours in tanks maintained at 65 PSI to allow for proper material density. Available resins include custom colored, clear and custom tinted clear, glass-filled, and UL94-VO, in a range of durometers from 40A to 90D.
Our precision meter mixing system allows for rapid production of parts (up to 10 per day, per mold) using a UL94-VO rated, 80D polyurethane. This system also exhibits a heat deflection of 200º F.
The finished part is removed from the mold after curing and sent to the finishing department to receive your specified finish treatment.