Summary of food flexible packaging sterilization

With flexible packaging as meat food packaging container, because has the characteristics of convenient, normal temperature storage, now more and more widely used. Sterilization of food flexible packaging problems have been more and more attention. Representative in the flexible packaging is compounded by three layers of material of retort pouch & ndash; — — Aluminum foil bag, outer layer material for the polyester film ( PET) , intermediate materials for aluminum foil, lining material for polypropylene ( PP) Class. About 15 mm, with resistance to high temperature, high pressure, pervious to light, breathable, good thermal performance, and convenient use, etc. The following is the author in the production practice, through vacuum packaging, high-temperature sterilization technology is applied to the flexible packaging canned meat given in the production process. Vacuum packaging vacuum packaging is the purpose of the air within the aluminum foil bag, the bag of food in vacuum condition, prevent the aluminum foil bag in the high-temperature sterilization deformation or damage; Prevent food flexible packaging bags of food color, aroma, taste changes of anaerobic-aerobic breeding bacteria, to avoid the food deterioration. Vacuum packing equipment used for vacuum packaging machine, is mainly composed of vacuum pump and the studio. General component is fully automatic, double room, single room three forms. Vacuum packaging of working parameters for the heat sealing temperature, extraction time, heat sealing time, depending on the flexible packaging material, size, thickness, to choose a different working parameters. For example, specifications 150 & times; 7 seconds. 09 mpa, vacuum effect is good, up to the specified requirements. After completion of vacuum packaging, aluminum foil bag should be no QiGan tightening, sealing closely, bag surface without damage, otherwise, must change the bag, lest cause nonconforming product. High temperature sterilization of high-temperature sterilization purpose is to kill the bacteria contamination in foods, and destroys enzymes in the food, the food shelf life at room temperature to achieve more than one year, high temperature sterilization is using high temperature steam, the equipment used for sterilization pot, mainly consists of pot body, pan door. General component is fully automatic, horizontal, vertical three forms. Equipment has a steam boiler, air compressor, water pump, etc. High-temperature sterilization work parameters for the sterilization temperature, heating time, temperature sterilization time, cooling time and the pressure, the pressure depending on the net content of flexible packaging canned meat to choose different working parameters. For example, 250 grams of aluminum foil bag of canned meat sterilization formula representation for 15 '- 30' 25 '( 15 mpa) Sterilization temperature 5 ℃ said regulations; The time needed for 5 ℃; 5 ℃, at the temperature to maintain the time; 5 ℃ to delivery temperature ( Generally is 30 ℃) The time required for 25 minutes; 15 mpa, shipment until the temperature. 26-1994 food hygiene microbiological examination, canned food commercial asepsis inspection standard detection, its microbial indicators can completely reach & other; Commercial asepsis & throughout; National standard requirement, under normal temperature conditions, the shelf life of one year or even longer.
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