| 摘要 |
PURPOSE:To reduce the cost of a resin molded product by preventing dust adhesion to the product, by pulling up the product charged with static electricity after the same is immersed into a water tank provided with an earth. CONSTITUTION:After molding by an injection molding machine by making use of synthetic resin material, for example, polypropylene or ABS resin, a product is removed from the mold by an automatic unloader after the temperature of the product is made to fall down to the temperature in the mold, which does not deform the product. The product taken out is charged with static electricity through friction and holds the temperature of about 46 deg.C-48 deg.C at the time directly after the demolding. Then the product is thrown into water tank storing city water and providing with an earth, and immersed into the water for 2-3 seconds. The static electricity with which the surface of the product is charged through this process is discharged rapidly through water- earth. The product is pulled up from the water tank after immersion and dried by taking the water off from the product.
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