High temperature cooking bags detection technology

High temperature cooking bags because edible is convenient, easy to carry, long storage life at room temperature, and many other advantages to become preferred packing meat, bean products in recent years. Due to high temperature cooking bags must have 135 ℃ high temperature cooking sterilization conditions ( Sterilization 30-135 ℃ 40min。 : can kill all bacteria, basically achieve the purpose of long-term preservation under the condition of not frozen food) , so how to test performance of high temperature cooking bags, i. e. , how the temperature status of each time period of the packaging for testing, has been the industry attaches great importance to the problem. Detailed below: (1) test equipment: ZM - High temperatures (100 Back pressure) Cooking pot sterilization temperature: 100 - 135℃； Disinfection of drum diameter: ￠400; Storage bucket volume: 50 l; Working pressure range: 0 - 0. 22Mpa（ Saturated vapor pressure) ； Hydrating pressure: & ge; 0. 32Mpa； Back pressure stress: 0. 14 - 0. 20 mpa design principle: on the basis of medical high temperature sterilization container theory, two new improvement techniques: 1, the temperature and pressure, set up a separate temperature control, according to a separate temperature sensor are installed in job positions, connected to the equipment outside temperature display on the table, showing that the temperature is not affected by the partial pressure of the air. 2, through the replacing elimination of the influence of air, when produce a certain pressure on the job positions to begin gas displacement, and use the pressure of water vapor air out. After several times of effective gas displacement, and finally can make the stay in the air in the warehouse is less than 1%. Because: according to the authoritative department detection shows that at 135 ℃, the highest actual temperature is only 133. 9 ℃, temperature difference reaches 1. 1 ℃, so the conclusion of guiding significance for soft package enterprise is very limited. The two technology, completely solve the external thermometer shows the temperature and the actual error, and thus avoid may cause misleading in the enterprise and the detection of ink, adhesive, film series errors caused by heat temperature. Three, equipment operating instructions and matters needing attention: 1, will cover seal. 2, open the power supply, set temperature and temperature holding time, open the water faucet. 3, press the switch, at this time, if there is no water or water in barrel filling water indicator lamp ( Red) Will be bright, digester began to fill at the same time, until you reach level, after filling water indicator, indicator ( Yellow) To start heating equipment. The whole sterilization operation is automatically, until the end, the timer display & other; 端” 。 Note: for flexible packaging bags items sterilization, to prevent the bag burst suggest when the room temperature to 98 ℃, discharge valve closed, to keep the air inside the bag expand pressure and inflation pressure balance air in barrels. In 98 ~ 100 ℃, the appropriate open the discharge valve, the air, exhaust degree is limited to pressure can still edged up ( Cannot reduce pressure, otherwise the bag will burst) To gauge the temperature and pressure values corresponding to the later, again appropriate in the small exhaust valve; 4, finished, start the compressor. The compressor on the pressure reducing valve pressure regulation to 0. About 165 mpa. Note: the back pressure is more than 0. 22 Mpa, so be sure to check on the relief valve pressure setting at any time. 5, connect the output pressure on the pressure reducing valve gas to fill port behind the cooking pot. When the pressure in the digester is less than 0. Less than 165 Mpa, open the back pressure valve of tonic. Pressure until the pot temperature down to room temperature. At this time can be open on the left side of the drain valve, discharge hot water, automatic equipment cold water filling, to accelerate cooling water for automatic circulation cooling. Note: the power running switches to the starting position before filling water, and water pressure must be > 0. 32 Mpa, when water pressure is too low, not into the water. 6, cooking pot temperature drop to normal temperature closed after fill back pressure valve, laying a cooking pot on the right side of the discharge valve, air and water vapor emissions, emissions need to close the valve. For pressure drop to normal pressure, open the lid, take out the sterilized items, open the drain valve of the cooking pot on the left side of the water discharge, discharge water to close the valve. Above is the high-temperature cooking bags of detection method, reach the standard of high temperature cooking bags to better preserve food.