Retort stand up pouche are bags containing aluminum foil in the posites. Aluminum foil bag barrier oxygen and moisture is very good, permeable oxygen permeability is 1, is a good barrier material. retort stand up pouche has good heat resistance, good light reflectivity and luster, good shape at high temperature and low temperature, suitable for high temperature cooking, the highest can withstand 125 degrees Celsius.
Longine aluminum foil bags have the following advantages:
（1）With easy to tear, can easily tear, more convenient and fast design more human.
（2）Seal edge is neat, can be used by sealing machine, good sealing edge is tight, not easy to explode bag, rest assured to use to extend the shelf life preservation effect.
（3）Flat mouth design,the product space is larger.
（4）It can be evacuated to keep the food alive for longer periods of time.