Winpak Ltd is a Canada-based integrated converting company operating in the packaging materials segment. Its segments include modified atmosphere packaging, specialty films, rigid containers, lidding, biaxially oriented nylon and packaging machinery. Modified atmosphere packaging manages the shelf life of perishable foods. Its packaging is used for a range of markets and applications, including poultry, medical device packaging and high-barrier films for converting applications. Specialty films include a line of barrier and non-barrier films, which are used for converting applications, such as printing, laminating, and bag making. Rigid containers include portion control and single-serve containers, as well as plastic sheet and custom retort trays, which are used for applications, such as food, dairy, industrial and healthcare. Its lidding products are available in die-cut, daisy chain and rollstock formats, and are used for dairy, beverage, industrial and healthcare applications.