The treatment of flatulence in vacuum bag packaging

First, what is a vacuum bag

The so-called vacuum bag refers to the packaging method of putting the product into a specific sealed bag, and then pumping the air inside, so that the bag after pumping the air reaches a certain vacuum degree. The air inside the bag is completely extracted, so that the bag is in a state of little air and low oxygen, so that microorganisms have no survival conditions, so as to ensure the freshness of the food and extend the shelf life of the food.

Second, the classification of food vacuum packaging bags

1, plastic bag vacuum bag: the packaging method is to use two bags, one is the outer bag, one is the inner bag. The outer bag is made of ordinary composite printed food bag, and the inner bag is made of vacuum bag.

2, aluminum foil vacuum bag, also known as pure aluminum bag or aluminum foil bag: the packaging in the process of high-density metal (aluminum) collection on the bag, increase the barrier performance of the bag, shading, often used in tea packaging and cooking bags.

3. Other vacuum packaging bags: The packaging uses PA(nylon)/PE(reinforced) or PA(nylon)/RCPP, PET/PE, PET/RCPP and other materials.

Third, the main materials and characteristics of various food vacuum packaging bags

1, pe is suitable for low temperature use, often used for vacuum packaging of frozen food, or ordinary boiled products can also be used (remember: non-high temperature cooking bag)

2, RCPP, also known as (cpp) suitable for high temperature cooking, is a common material for the production of high temperature cooking bags

3, PA(nylon) is to increase physical strength, puncture resistance. It is a common material for steam boiling bags and liquid bags, and the use of nylon can enhance the tenderness and pressure resistance of the bags.

4, al aluminum foil is to increase the barrier performance, shading. It is a commonly used material for tea vacuum bags and cooking water bags.

5. PET increases mechanical strength and has excellent stiffness.