Vacuum packaging machine for packaging material requirements

Vacuum packing machine for food packaging we are now a lot of convenience, it is inevitable in packaging for us need all kinds of packaging materials, packaging bags are our daily to see very much of a packaging material, so, what are the requirements for the packing material design?

　　1. To keep or maintain a state of the atmosphere of the packaging container, vacuum packaging machine for packaging material put forward different requirements. Plastic packaging materials of air permeability and moisture permeability along with the molecular structure of polymer, film thickness, the influence of factors such as temperature and humidity changes; Affected by the atmospheric environment after vacuum or inflatable packaging, packaging container containing oxygen or mixed gas concentration changes of each composition, selection principle of packaging materials is to reduce the influence of the atmospheric environment, get as far as possible, long shelf life.

　　2. According to characteristics of food preservation, meeting the requirements of packaging materials for vacuum and air permeability can be divided into two categories: category of high barrier property packaging materials, vacuum and inflatable packaging for food preservation, reduce packaging container of oxygen concentration changes of components and mixed gas; Another kind is permeability packaging materials for fresh fruits and vegetables when volume vacuum packing machine to maintain its low breathing rate. Vacuum and air the moisture vapor transmission performance requirements of packing material is the same, the resistance of water vapor permeability is better, more conducive to the preservation of food.

　　3. Food packaging information needs a high barrier property. Grease food requires high oxygen resistance and resistance oily; Requires a high resistance to wet, dry food in order to ensure the smooth of packaged food. Fragrant food requires Gao Baoxiang sex; Fruit vegetables fresh food packaging have demanding oxygen, carbon dioxide and water vapor permeability. In addition to food packaging bags have high tensile strength, tear resistance, resistance to impact strength, good chemical stability, no chemical reaction with the built-in food, ensure food peace; In addition must have the high temperature resistance, satisfies the requirement of food, such as high temperature disinfection and low temperature storage.

to sum up, the choice of vacuum packaging machine packaging materials we use is us the types of food packaging for high temperature, high oil and high corrosive products have different packaging materials packaging can we keep the food fresh and up to the shelf life of 6 months or more.

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