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Published on January 1, 2007

Cryogenic Finishing of Molded Rubber Parts

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Date Published January 1, 2007

This Report has been authored by:Wayne H. Matott at Hudson Rubber Technology Corp. #with# Stacy Morgan at Hudson Rubber Technology Corp.

From the beginning, molded rubber parts have had flash or excess rubber that had to be removed before the part could be used in its final application. Throughout time, many methods to remove excess rubber have been employed, starting with hand tools and ending with the current method called Cryogenic Shot Blast. As the rubber industry embraced technology and as labor costs rose, the only cost effective method of dealing with this age old problem was with machinery. In most rubber companies, the problem or bottleneck is not the molding process but the finishing process. Molding presses can create hundreds or even thousands of parts an hour, but until the parts are finished and meet the customerís specification, they cannot be shipped. This is why it is so very important that a fast and efficient method of finishing is available. The finishing process is just as important as the molding process: you have to finish the part without damaging it, or everything goes down the drain. 
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