Factors affecting the degree of vacuum tank there are many, such as the exhaust sealing temperature, freshness of food, food acidity, the amount of air within the food organization, canning conditions, the size of the head space, exhaust methods. Here the professional production of beverage closure, the lid of iron and aluminum companies - Dongguan Real Connaught Packing Co. to serve you a brief introduction about it. Hoping to help you.

1. When the headspace of heated exhaust canned food, canned food headspace greater degree of vacuum often relatively high, but too much effect on canning headspace volume. When vacuum sealing, the tank headspace small cans, vacuum is also low. Headspace hour, affecting the degree of concave lid cans inside and outside due to the pressure difference caused by the volume of the tank headspace generated increases. Cans too close to the air is not there is room, the degree of vacuum will therefore disappear.

2. Canned exhaust heat sealing temperature, sealing the higher the temperature, the higher the degree of vacuum cans sealed. When vacuum sealing, canned vacuum depends on vacuum seamer studio vacuum, pumping time and canned sealing temperature.

3. kinds of food materials and acidity of different types and varieties of raw materials, the amount of gas contained within their organization is different. The higher acidity of the food, the more likely to cause acid corrosion, to produce hydrogen, thereby reducing the degree of vacuum cans.

The freshness of food ingredients and freshness poor sterilization temperature materials will decompose when heated to produce gas sterilization. Freshness worse, the higher the sterilizing temperature, the more gas is produced, the lower the degree of vacuum.

5. The level of temperature rise in temperature, water vapor pressure and trapped air tank pressure will increase as well, but the change in atmospheric pressure is generally small, and the vacuum degree = atmospheric pressure - residual pressure in the tank, obviously, the tank temperature rises vacuum level drops. So for the same can, in different regions or different season, a different degree of vacuum.

6. The barometric pressure and altitude by a concept known vacuum, atmospheric pressure and altitude affect the degree of vacuum are also great. The higher the altitude, the lower the atmospheric pressure, the degree of vacuum cans also lower.