Control Technique Model And Its Application Of Product Package Inner Environment

After putting the product into package container and sealing it, the environment between surface of the product and package material is called package inner environment. The package inner environment which can be described by gas concentration, temperature and relative humidity is the direct factor to influence product quality. In recently years, control technique of package inner environment has changed from single parameter control to many parameters complex control, and the factors and factors interplay it involved become more and more complex. At present the research for control technique of package inner environment has been in a dispersive state. Researchers pay attention to the products which are interested and choose different package inner environment factors as control object. The research is dispersive because of various products and experiment equipments, which restrict technique development and application for control package inner environment.Firstly this paper analyses the factors influencing package inner environment from package material, product and outer environment and makes package inner environment model which provides theory foundation for package inner environment control technique. Then control technique model of package inner environment is made by comparing several control techniques of package inner environment such as vacuum packaging, modified atmosphere packaging, deoxygen packaging and so on. This model reflects hypostasis of package inner environment control techniques and helps to put forward new control techniques.Lastly control technique model of package inner environment is applied to fruits and vegetables which are difficult to pack, and chooses modified atmosphere package inner environment of fruits and vegetables as the main research object. The model of modified atmosphere package inner environment for fruits and vegetables is made after synthesizing package inner environment model, respiration model and gas pervasion model,and emulators are compiled with VC++6.0 according to the model. The emulators cansimulate gas concentration change through inputting different parameter value.