The role of desiccant in food packaging bags

December 5, 2022

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We all know that there will be a packet of desiccant in some food packaging bags, dog food packaging moisture-proof bags, and nut ziplock bags, and it is marked: inedible. So what kind of role will the desiccant in different product packaging play? The moisture-proof bag manufacturer tells you that it is to reduce the humidity of the food in the packaging bag and prevent the food from deteriorating and rotting. The types of desiccants can also be roughly divided into five categories: 1,Silica gel desiccant:The raw material of silica gel desiccant is a kind of hydrous silica with high microporous structure, which is colorless, odorless, non-toxic, stable in chemical properties and good in hygroscopicity. Widely used in instruments, instruments, leather, luggage, food, textiles, equipment and equipment, etc. Its function is to control the relative humidity of the environment during storage and transportation to prevent items from getting damp, mildew and rust. The main thing to note is that this is an EU approved desiccant. 2, fiber desiccant:The biggest feature of fiber desiccant is that it is made of pure natural plant fiber and refined by special process. It is worth mentioning that the film-coated fiber desiccant sheet is space-saving, convenient and practical, and its moisture absorption capacity is equivalent to its own weight, which is much higher than that of other desiccants. Because of its moderate price and hygiene, it is the best choice for many health care products, medicines and biological desiccants. 3, Montmorillonite desiccant:Montmorillonite desiccant is widely used in medical health care, food packaging, optical instruments, electronic products, military products and civilian products and other products that cannot be sealed by oil or weather. Due to the use of pure natural raw material bentonite, it has the characteristics of strong adsorption, fast adsorption speed, odorless and non-toxic, no environmental pollution, no contact corrosion, green environmental protection, odorless and non-toxic, no damage to the human body, good adsorption performance, and adsorption activity , Static dehumidification and odor removal. 4, quicklime desiccant:In the chemistry class of quicklime desiccant, quicklime is mentioned in the chemistry class. Its main component is calcium oxide, which absorbs water through chemical reaction and is irreversible. common is”snow cake””Shrimp Crackers”The use of such desiccants. In addition, it is also commonly used in electrical appliances, leather, clothing, shoemaking, tea, etc., but because quicklime is a strong alkali, it is highly corrosive, and sometimes the eyes of the elderly and children are injured, so it is gradually being eliminated. 5, calcium chloride desiccant:Calcium chloride desiccant mainly uses calcium carbonate and hydrochloric acid as raw materials, and is refined through reaction synthesis, filtration, evaporation concentration, drying and other processes. It is used as calcium enhancer, chelating agent, curing agent, desiccant, etc. in the food industry. . At the same time, it is also used as a desiccant for gases to produce dehydrating agents for ethers, alcohols, and acrylic resins. Calcium chloride is mostly porous block, granular or honeycomb raw material, odorless, slightly bitter taste, soluble in water and colorless.Aluminum foil three-dimensional bag manufacturers mainly focus on custom-made food packaging bags and industrial packaging bags. Many customers also have needs for desiccants during the sales process. The product also adds a desiccant for customers to choose

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