Why to want to add in food packaging desiccant, have what kind of?

Food packaging bags contain a desiccant and made clear: do not eat. The role of desiccant, obviously, is to reduce food humidity in food packaging bags, prevent corruption in food spoilage. For the type of desiccant can be roughly divided into five types: a, high silica gel desiccant its raw material is a kind of micro pore structure of hydrated silica, has the characteristics of colorless, tasteless, non-toxic, stable chemical properties, good moisture absorption performance. Widely used in instruments, instruments, leather, bags, food, textiles, equipment, instruments, etc. Its role is in the process of storage and transportation environment relative humidity control and prevent the goods be affected with damp be affected with damp, mildew and rust. It is worth noting that this is the only eu approved desiccant. Second, the fiber desiccant its biggest characteristic is made of pure natural plant fiber, through special process refined but become. It is worth mentioning coated fiber desiccant piece, save a space and convenient and practical, the moisture absorption ability and its weight is, far higher than other desiccant moisture absorption ability. Because the price is moderate, safety and health, is the best choice for many health care products, pharmaceuticals and biological desiccant. Three, montmorillonite desiccant the desiccants are widely used in medical care, food packaging, optical instruments, electronic products, military and civil products can't oil seal, weather seal products. Because of using pure natural raw materials of bentonite, have strong adsorption capacity and adsorption speed and tasteless non-toxic, no pollution, no contact with corrosive characteristics of green environmental protection, tasteless non-toxic, no damage to human body, adsorption performance is good, has the adsorption activity, static dehumidifying and odor removal effect and so on. Four, quick lime desiccant has high school chemistry class when it comes to quick lime, its main component is calcium oxide, through chemical reaction to realize water absorption, is irreversible. The most common is 'snow cake' in the use of the desiccant. In addition, also often used in electrical appliances, leather, clothing, shoes, tea, etc. , but as a result of quick lime belongs to alkali, strong corrosive, old person, child eyes were injured, are gradually being phased out. Five main high quality calcium carbonate calcium chloride, calcium chloride desiccant with hydrochloric acid as raw material, through evaporation and concentration, reaction synthesis, filtering, drying craft refined but become, in the food industry as a calcium fortifier, chelating agent, curing agent, desiccant and so on. Also used as a gas dryer, used to produce ether, alcohol dehydrating agent, acrylic resin, etc. Calcium chloride is hole more massive, granular or honeycomb materials, odourless, taste bitter, soluble in water is colorless.
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