Working Principle of Vacuum Packaging Machine

        The vacuum packaging machine is composed of vacuum system, pumping and sealing system, hot press sealing system, electrical control system, etc. The principle of desktop vacuum packaging machine is to use plastic composite film or plastic aluminum foil composite film as packaging material to vacuum pack or vacuum extract packaging for solid, liquid, powder, paste food, chemicals, electronic components, precision instrument table, rare metals, etc. The external vacuum packaging machine is to make the bag into a low vacuum and then seal it automatically. For some soft food, after being packed by automatic vacuum packaging machine, it can reduce the packing volume and facilitate transportation and storage.