What is the packaging material of the external vacuum packaging machine?

External vacuum packaging or vacuum inflatable packaging is usually a three-side sealing bag made of double-layer composite film or three-layer aluminum thin composite film. The thickness of the composite film is generally between 60-96UM, and the inner layer is a heat-sealing layer. It has good heat sealability, the thickness is between 50-80um, the outer layer is a sealing layer, it needs to have good air tightness and printability, a certain strength, and the thickness is between 10-16um. The inner layer of the composite film is based on Polyethylene (PE) is commonly used as the material. For example, high temperature cooking bags are made of high temperature resistant polypropylene (CPP). The outer substrate is usually stretched polypropylene (OPP), polyester (PET), nylon (PA), etc. Some food For example, tea, milk powder, etc. and some high-fat foods need to use light-blocking packaging to prevent the food from being affected by light and change its color, aroma and taste. The method is to compound a thin layer of aluminum foil (AL) between the inner and outer substrates. , The air tightness of the external vacuum packaging machine is also strengthened.

External vacuum packaging machine is widely used for vacuum packaging of grains, fruits, pickles, preserved fruits, chemicals, medicinal materials, electronic components, precision instruments, rare metals, etc. The vacuum-packed items can prevent oxidation, mildew, insects, Rotten and damp, prolong the shelf life. It is especially suitable for tea, food, medicine, shops, research institutions and other industries. It has the advantages of beautiful appearance, compact structure, high efficiency, easy operation, and a seat wheel at the bottom, which is convenient to move. If you want to know more information about the external pumping vacuum packaging machine, you can consult Henan RuiYouNa Machinery Co., Ltd., thank you!