塑料薄壳金属制件經过工人辛勤劳动加工制成,却往往由于銹蝕而报废。金属的銹蝕,多半是由于外界有害因素的侵蝕作用造成的。为了防止銹蝕,通常可以在金属制件外表塗一层粘稠的矿物油脂,也可以塗或鍍一层非金属材料(例如树脂、油漆、搪瓷)或金属材料(鉻、鎳、銀、鋅等)。近代,随着塑料技术的进展,出現了一种新的防銹包装法, Plastic thin shell metal parts are made by workers who work hard but are often scrapped due to corrosion. Most of the corrosion of metals is caused by the erosion of external harmful factors. In order to prevent corrosion, it is usually possible to coat the surface of metal parts with a thick layer of viscous mineral oil, or to coat or plate a layer of non-metallic materials (such as resin, paint, enamel) or metal materials (chrome, nickel, silver, zinc, etc.). ). In modern times, with the progress of plastic technology, a new rust-proof packaging method has emerged.