The composition of vacuum packaging machine: vacuum pump, motor, vacuum chamber, sealing strip, plexiglass plate cover, air bag, solenoid valve, etc. 1. Definition of vacuum packaging: put the food into the packaging bag, extract the air in the packaging bag, and reach the predetermined vacuum degree, then complete the sealing process. Vacuum inflatable packaging is to put food into the packaging bag, draw out the air in the packaging bag to reach a predetermined vacuum degree, then fill with nitrogen or other mixed gas, and then complete the sealing process 2. Mechanism of action: The main function of vacuum packaging is to remove oxygen to help prevent food spoilage. The principle is also relatively simple, because food spoilage is mainly caused by the activities of microorganisms, and most microorganisms (such as mold and yeast) Oxygen is needed for survival, and vacuum packaging is to use this principle to evacuate the oxygen in the packaging bag and food cells, so that the micro-objects lose the "survival environment". 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 breeding. (Note: Vacuum packaging can not inhibit the deterioration and discoloration of food caused by the growth of anaerobic bacteria and enzyme reactions, so it needs to be combined with other auxiliary methods, such as refrigeration, quick freezing, dehydration, high temperature sterilization, irradiation sterilization, microwave sterilization, salt Marinated, etc. In addition to inhibiting the growth and reproduction of microorganisms, vacuum deoxygenation is another important function to prevent the oxidation of food. Because oils and fats contain a large amount of unsaturated fatty acids, they are oxidized by the action of oxygen, which makes the food smell and deteriorate. In addition, oxidation also makes Vitamins A and C are lost, and unstable substances in food coloring are affected by oxygen, making the color darker. Therefore, deoxygenation can effectively prevent food from spoiling and maintain its color, aroma, taste and nutritional value. The main function of vacuum inflatable packaging is not only the oxygen and quality preservation function of vacuum packaging, but also the functions of anti-stress, gas barrier and freshness, which can effectively maintain the original color, fragrance, taste, shape and shape of food for a long time. Nutritional value. In addition, there are many foods that are not suitable for vacuum packaging and must use vacuum inflatable packaging. Such as crispy and fragile foods, foods that are easy to agglomerate, foods that are easy to deform and take oil, foods with sharp edges or high hardness that will puncture the packaging bag, etc. After the food is vacuum-inflated, the inflation pressure inside the packaging bag is stronger than the atmospheric pressure outside the packaging bag. The vacuum inflatable packaging is filled with a single gas of nitrogen, carbon dioxide, oxygen or a mixed gas of two or three gases after vacuum. Nitrogen is an inert gas, which acts as a filling and keeps the positive pressure inside the bag to prevent the air outside the bag from entering the bag and has a protective effect on food. Its carbon dioxide can be dissolved in various fats or water, lead to weak acidic carbonic acid, and has the activity of inhibiting microorganisms such as mold and bacteria. Its oxygen can inhibit the growth and reproduction of anaerobic bacteria, keep the freshness and color of fruits and vegetables, and high concentration of oxygen can keep fresh meat red.
This series of Paper Cutting Machine's
paper sending system adopts whole slotless worktable.It adopts double guide
structure. The cutting system drives the special high wearable. worm wheel sloe
transmission through the electronic magnetic friction clutch. Tts cutting speed
reaches 45 cycles/min and paper clamping pressure can be adjusted in a big
range. The cutting should be operated with double hands at the same time. It is
also equipped with photo cell, single recycle cutting device to insure safety.
Therefore, this series of paper cutting machine has features of low noise.
large cutting power, high cutting precision,solidity, sueful and safety.
Microcomputer Paper Cutting Machine Paper Cutting Machine, Computer Paper Cutting Machine, Hydraulic Paper Cutting Machine Anhui Innovo Bochen Machinery Manufacturing Co., Ltd. , https://www.innovomachines.com