Lubricants / Waxes
Lubricants as plastic additives, assist in the internal lubrication for the resin and reducing friction between the polymer melt and the surface. During processing, lubricants forbid the plastic to stick to the mold surface. After the products are extracted from the mold, lubricants ooze from the plastics and prevents them from adhering to each other. Lubricants also offer a nonsticky or slippery quality to the plastics surface. Lubricants employed in processing plastics are waxes like (montan, carnauba, paraffin and stearic acid) and metallic soaps (stearates of lead, cadmium, barium, calcium and zinc).