Suzhou high temperature cooking bag is a composite plastic film bag can be heat-treated, it has plastic containers and cans both boiling water resistant advantages. Food can be left intact in the bag, high temperature (usually 120 ~ 135 ℃) sterilization heating, remove and serve. After ten years of use to prove that it is an ideal sales packaging containers. For meat, soy products packaging, convenience, health and practical, and can be well maintained the original flavor of food, the more consumers. Suzhou high-temperature cooking bag structure in order to meet the performance requirements of retort pouch, its structure outer select high-strength polyester film, the middle layer of aluminum foil with a select shading and air tightness, the inner layer of polypropylene film selection. There are three-layer structure: PET / AL / CPP, PPET / PA / have a PET / AL / PA / CPP CPP two kinds, four-layer structure. With the concept of low carbon environmental protection has become the mainstream melody society, many areas are in practice low-carbon and environmental protection. Packaging industry as one of the relatively severe pollution industries, as well. Many of the environmental pollution of the packaging material is being phased out of our lives, green packaging materials has become the development trend of the packaging industry and the future. Now there are many green packaging materials, can be divided into re-using and recycling of packaging materials, packaging materials, edible, biodegradable materials and paper materials four.