jueves, 16 de mayo de 2013
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  1. As many as 200,000 components Electric Jar Openers can be turned out on a set of forged steel dies, utilizing sheet molding compound , a composite sheet materials made by sandwiching chopped fiberglass between two layers of thick resin paste. To kind the sheet, the resin paste transfers from a metering system onto a shifting movie service. Chopped glass fibers drop onto the paste, and a second movie service locations one other layer of resin on prime of the glass. Rollers compact the sheet to saturate the glass with resin and squeeze out entrapped air. The resin paste initially is the consistency of molasses (20,000-40,000 cps); over the subsequent three to 5 days, its viscosity increases and the sheet becomes leather-like , best for handling.