Founded in Columbus, Ohio, in 1950 by Donald Dunn, Plaskolite has grown from a plastic-sheet maker into a global manufacturer of engineering thermoplastics. The company pairs large-scale production with customer-specific fabrication and specialized optical molding, including clean, climate-controlled injection molding with presses up to 550 tons. Plaskolite also emphasizes responsible manufacturing, with some sites recycling 50% to 80% of their waste and reducing disposal by more than 70%.
PlaskoliteFounded by Donald Dunn in Columbus, Ohio, in 1950, Plaskolite has grown from a plastic-sheet maker into a global manufacturer of engineering thermoplastics and customized sheet solutions. The company stands out for pairing large-scale material production with hands-on optical manufacturing, including injection molding, precision coatings, and tooling for distortion-free optics. Plaskolite also emphasizes responsible manufacturing, with site recycling rates ranging from 50% to 80% and a focus on recycled sheet products.LANCASTER, PA
Lehigh Valley PlasticsSince 1971, Bethlehem-based Lehigh Valley Plastics has turned engineered plastics into precision-machined parts and custom-fabricated assemblies for demanding manufacturing applications. Its 55,000-square-foot climate-controlled facility supports projects from prototype through production, with in-house material guidance and documented quality systems. The company also runs a polymer-recycling program and helps customers consider longer-life, recyclable designs.BETHLEHEM, PA
PCPI Plastics, LLCFounded in 1976 with one machine and one customer, Ohio-based PCPI Plastics manufactures engineering-grade thermoplastic injection-molded products and components for customers worldwide. Its engineering team pairs documented scientific molding with component design and tooling support to make repeatable, high-performance parts, while more than 300 available resin options broaden what customers can design. PCPI’s quality system is ISO 9001:2015 certified, and the company is a UL-recognized thermoplastics molder.DE GRAFF, OH
CTC PlasticsFor more than 30 years, Dayton-based CTC Plastics has produced high-volume compression-molded plastic components, with particular expertise in durable plastic pallets and large structural parts. Its large-format presses, in-house materials engineering, and ISO/IEC 17025:2005-certified laboratory support programs from prototype through domestic production. The company also incorporates recycled compounds and reclaimed scrap where possible, tying waste reduction to long-lasting molded products.DAYTON, OH