Conformal mold cooling gains another licensee.A patented conformal con·for·mal adj. 1. Mathematics Designating or specifying a mapping of a surface or region upon another surface so that all angles between intersecting curves remain unchanged. 2. cooling process developed by Ritemp Technologies Pty. Ltd., Edwardstown, South Australia Edwardstown is an inner Southern suburb located 7 km southwest of Adelaide in the City of Marion. Edwardstown is in the South Australian House of Assembly Electoral district of Elder and the Australian House of Representatives Division of Hindmarsh. , has been licensed to the mold manufacturing division of Rexam, located in Buffalo Grove Buffalo Grove A village of northeast Illinois, a suburb of Chicago. Population: 43,300. , Ill. The technology is said to reduce molding cycle times 20% to 50% and to eliminate hot spots hot spots acute moist dermatitis. and mold-temperature variations. The technology has also been licensed to moldmaker Stackteck Systems, Inc., Brampton, Ont., and to Ryka Blow Molds Inc., Mississauga, Ont. The patented evaporative cooling Evaporative cooling is a physical phenomenon in which evaporation of a liquid, typically into surrounding air, cools an object or a liquid in contact with it. Latent heat describes the amount of heat that is needed to evaporate the liquid; this heat comes from the liquid itself and approach provides cooling only where it is needed in the mold, resulting in highly uniform mold temperature regardless of mold geometry. Instead of conventional cooling channels, the Ritemp approach uses large conformal cooling chambers on the core and cavity sides of the mold. Air is partially evacuated from the chamber with a vacuum pump Vacuum pump A device that reduces the pressure of a gas (usually air) in a container. When gas in a closed container is lowered from atmospheric pressure, the operation constitutes an increase in vacuum in this container. . Low pressure in the chamber allows a reservoir of water in the sealed chamber to boil at low temperature (50 F). Low boiling temperature permits more heat removal in the phase change from liquid to gas than occurs when merely heating liquid water. A heat exchanger at the top of each mold condenses half the steam back to water. The mold is not run cold enough to sweat. Ritemp supplies a controller to turn water flow to the heat exchange on and off depending on mold temperature detected by a sensor in each chamber. (847) 541-7900 * www.rexam.com +61 8 8374 4633 * www.ritemptechnologies.com (416) 749-2795 * www.stackteck.com (905) 670-1450 * www.rykamolds.com |
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