EnviroTech Custom Injection Molders services

Here at EnviroTech, we offer a full range of design and engineering services for our customers. We can assist you with designs for all types of injection molds, molded components, slab stock molding and more. We design molds as well as molded thermoplastic parts. We can engineer the perfect polymer resin for your unique needs, using advanced technology and our more than 50 years of experience in the industry. We serve customers in virtually every industrial sector, including oil and gas, energy, aerospace, marine, medical, defense, automotive, chemical processing, mining and more. When only the best mold and molded component design and engineering skills will do, call on the experts at EnviroTech.

Wall thickness - effect on shrinkage: The wall thickness of a molded part has a direct effect on polypropylene shrinkage. This contraction of the part occurs predominantly within the first 48 hours after molding due to polymer post-melt crystallization.

Tooling costs are dependent on part complexity/geometry, part size, mold complexity, class and cavitation, materials of construction, cavity and core finish, material to be molded, etc. and must therefore be estimated on a case by case basis. Mold costs can range from several thousand dollars for a small prototype or limited-production tool to $50-100,000 for a large mold with P-20 steel cavities and cores to $500,000 or much more for a hardened or semi-hardened mold with critical finishes to mold very large lens-quality parts for aircraft canopies. The short version is that, again, tooling costs must be estimated on a case by case basis.