Located in St. Louis, Corpak is a division of GMI Group, which provides packaging materials and offers multiple converting and laminating services. Corpak manufactures a variety of custom packaging products that include corrugated folding cartons, bags, boxes, lids and clamshell packaging, as well as specialty films, foils and holographic laminations. The company offers a range of services, such as package design, custom manufacturing, multicolor printing, die cutting, shrink-wrapping and logistic support. Its additional products include grease barriers, trays, sheets, pizza bags and specialty barrier materials. The company serves commercial food, health care and packaging companies.