Below is a list of Dip Molding manufacturers from St. Charles, Illinois. Dip molding is the process of manufacturing plastic parts, products and components by dipping a mold into liquid plastic and allowing it to set before removing it from the plastic. The process is common in manufacturing items for the consumer, medical, electronic and retail industries, producing parts such as plastic caps, plastic plugs and other sorts of plastic closures, handles and grips for appliances, sports and recreational equipment, gloves and small plastic products.