Home Uncategorized The vacuum packaging machine can’t vacuum the air in the bag. Why?

The vacuum packaging machine can’t vacuum the air in the bag. Why?

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spark packaging machinery to answer:
the vacuum packaging machine cannot vacuum the air in the bag. Causes:
A. if the vacuum pump is short of oil or oil stain and oil quality
B. there is air leakage in the main vacuum pipeline and airbag pipeline of the machine
C. the vacuum time is too short:
D. the vacuum chamber and cover are not well sealed.
e. the distance between the heating row in the vacuum chamber and the two planes of the silica gel strip (the gap between the upper and lower heating rows is too small), resulting in the bag mouth being clamped or partially squeezed during vacuum pumping, so as to degass the air in the bag
* check the pump oil, And carry out correct treatment:
* when the machine is pumped to the maximum vacuum pressure, turn off the main power supply, detect the leakage by ear listening, hand touching and other methods, and deal with it in time
* adjust the vacuum delayer to extend the vacuum time
* replace the chamber side sealing strip
* properly tighten the pressure plate springs at both ends of the airbag assembly, or check whether the airbag (heat seal) solenoid valve works normally

experiments show that when the oxygen concentration in the packaging bag is ≤ 1%, the growth and reproduction speed of microorganisms will drop sharply. When the oxygen concentration is ≤ 0.5%, most microorganisms will be inhibited and stop reproduction. (Note: vacuum packaging can not inhibit the deterioration and discoloration of food caused by anaerobic bacteria and enzyme reaction, so it needs to be combined with other auxiliary methods, such as cold storage, quick freezing, dehydration, high temperature sterilization, irradiation sterilization, microwave sterilization, salt pickling, etc.)

poor machinery, air leakage

there is air leakage

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