... fittings and 84 Plastic Product Material and Process Selection Handbook electrical properties remain relatively constant over a wide range of temperatures and humidity. They resist water, acids, and ... areas that scatter light and cause a hazy appearance. 66 Plastic Product Material and Process Selection Handbook include foamed food trays, packaging, disposable cups, and printed displays. ... more products with mechanical and electrical connections, living hinges, colors, snap fits that can be combined into one product, and so on. 1 88 Plastic Product Material and Process Selection...