Injection molding is a versatile process for forming thermoplastic and thermoset materials into molded products of intricate shapes, at high production rates and with good dimensional accuracy. The process involves the injection, under high pressure, of a metered quantity of heated and plasticized material into a relatively cool mold--in which the plastic material solidifies. Reaction injection molded polyurethane parts are finding use in the medical diagnostic field for cabinetry, containers, keyboards, and structural components. Typical is the blood analysis apparatus market where short runs, low tooling costs and short tooling lead times are a necessity. Other advantages of this process are the ability to make product and tool changes and modifications with ease. The product has uniform shrink and dimensional stability. KEYWORDS for this process: moulds, moulding, moulders, molds, molders