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| Cold Jet - Precision Injection Mold Cleaning: Tyco |
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Keeping mold cavities clean is a major concern for molded metal, rubber and plastic product manufacturers in maintaining today’s high quality standards and ensuring maximum productivity. The build-up of unwanted surface residues from either the product mix itself, mold releases or the labeling process can create a number of problems, ranging from product release (“knock out”) to inferior product quality and possible damage to tools from overpacking and straining.
Today, most injection molding companies still clean their equipment by hand, opting to maintain their molds with wire brushes and wire wheels, sandpaper, and chemicals cleaners. These methods are time prohibitive and dangerous to employees because they require employees to work closely to hot metal surfaces and with potentially harmful solvents.
Other companies have tried abrasive media blasting such as sand, beads and Teflon. These methods can be messy and have a significant impact on production time. Sand blasting, for example, requires cleaning crews to remove the hot molds from the mold presses and transport the equipment to a completely contained area in order to reduce the chance that the blasted sand will get into any of the other machine parts. Once cleaned, the molds need to be recoated, reassembled in the presses and reheated before production can be restarted. For some cleaning projects, this process can take a cleaning crew an entire work shift or longer to complete.
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