RIM Question What is RIM? How is RIM different from traditional injection molding? How many kinds of RIM are there? What are the major RIM materials? Is my part right for RIM? What RIM finishes are available?

How is RIM different from traditional injection molding? Low temperature and pressure. RIM's low temperature, low viscosity, self-reacting mixture exposes the mold to far lower temperatures and pressures than does injection molding. RIM's advantage, therefore, is reduced mold stress permitting the use of lower cost mold substrate materials such as composites or aluminum. RIM molding temperatures are below the boiling point of water. Lower tooling cost RIM's use of a composite or aluminum substrate for tooling usually reduces cost by one third to one half of that for injection molding, particularly for large parts. Fine detail and sharp definition are achieved as well as variations in wall thickness without the dreaded sink marks. RIM can mold parts not achievable with injection molding. Large parts RIM is well suited for larger parts. RIM parts can be the huge truck part, but when multi-cavity "family" tools are employed, can accommodate small parts in large volume. Encapsulation and structural enhancing fills RIM allows the encapsulation of almost any material from wood to metal for either structure enhancement or cost reduction purposes. Structural enhancement materials such as carbon fiber or glass fills are used to create the super tough RIM composites. Selectable properties Available RIM formulations suit a wide set of designer's needs. This spectrum of general, mechanical and thermal property formulations includes structural foams, flexible foams, elastomerics, thin wall and solid urethanes. Formulations that can also affect stiffness, heat resistance, surface quality, impact strength and more. Further, such formulations can be tweaked to achieve specific density requirements.     © 2008 Rimnetics, Inc.   Mountain View & Loomis, California | Rimnetics is ISO 9001:2000 Certified