Bemis Clysar retort packaging uses super-heated water to cook foods in the original shelf-stable package. Flat, three-side sealed pouches, standup pouches, forming webs and rigid trays with flexible lidding film all are available. Convenience features include peelable films, directional tear features, perforated films for tear-off opening and press-to-close zippers. The packaging structures are engineered from an array of self-manufactured sealants with ultra-high thermal stability, burst strength and barrier, according to the company. Materials include foil laminations and unsupported foil from 0.275 to 2.8 mils.