Multi-Plastics, Inc. is the major supplier in North America of polystyrene envelope window film used by most envelope manufacturers today. Our stake and self interest are clear; we are dedicated to maintaining and extending our position as the preferred source of window film through the forming of strategic ally partnerships. We have partnered, for 20 years now, with the Kama Company, now a division of the Alcoa Inc.. IVEX was acquired by Alcoa Inc. in March of 2002. They are the world’s largest and most technically driven manufacturer of polystyrene. Together we are focused on offering you tested, hi-tech, hi-quality products aimed at meeting your needs today and for the future.