The Heat is On

Because of the demanding environments faced by retort pouches, David Idan, R&D manager, CLP Industries (parent company of CLP Packaging Solutions), says that each element of the retort package must be optimized. “Each layer plays at least one role in the performance of a retort package. At the core, a barrier layer of aluminum or coated PET protects the contents from spoilage,” he says. “Inside, a sealing layer, usually polypropylene, maintains the integrity of the seals, which is vital for pouch performance. Outside, a PET layer is often reverse-printed to provide rich graphics.”