Development and Application of Ceramic Packaging Materials

Domestic and foreign development of ceramics used in food packaging preservation, sterilization, deodorization, clarification of fruit juices, food production and wastewater treatment and other fields, the effect is significant.
● Far-infrared ceramics Far-infrared ceramics are ceramic materials with wavelengths ranging from 1 to 30μ. Silica, clay, kaolin, etc., which produce a far-infrared ceramic material, contain silicon oxide, alumina, etc. as the most basic components of far infrared ceramics. According to different needs can be added Fe2O3, TiP2, ZrO and MnO2 and other substances.
Far-infrared ceramic materials are manufactured by adding corresponding oxides such as iron, titanium, zirconium and manganese to silica and clay, crushing and adding appropriate amount of water, and sintering at a temperature higher than 1000°C to obtain ceramics capable of producing far-infrared rays. The coarse blank is crushed to form a ceramic powder, and a corresponding ceramic article or a ceramic coating or a ceramic membrane is formed as required. Infrared light can be emitted at room temperature or slightly high temperature, and it has the effects of sterilization and preservation.
A company in Japan developed a ceramic fruit and vegetable fresh-keeping bag with far-infrared effect. Packaging the fruits and vegetables with this new type of fresh-keeping bag can extend the shelf-life for more than one week. It is inside the package, coated with a layer of ceramic material, the far-infrared radiation released, and the water contained in the fruits and vegetables have a resonance effect, activate food molecules, so that it reaches the preservation effect. Far-infrared ceramic powder coated on the inside of the carton can be made into a fresh fruit and vegetable storage box for ceramics, which can be used for packaging fruits and vegetables and also has the effect of prolonging the preservation period. It can also be used to package long-distance transportation of fruits and vegetables, and to produce food containers. The far-infrared powder is added to plastics and metals to make food utensils or utensils, which has obvious effects of sterilization, preservation, and mildew-resistance.
● Bioceramics Korea uses biotechnology (including far-infrared technology) to make bioceramics. It is made from a variety of natural minerals that are purified, processed, and fired together with ceramic raw materials. Can be used to make bio-ceramic cutlery. Such as cups, teapots, hip flasks, casseroles, dishes, bowls, cigarette cases, etc. One of the products is a biochemical ceramic jug (a wine container) used to hold white wine. After 10 minutes, the new spicy and pungent wine can become sweet and supple, the quality of the wine is greatly improved, and the alcohol content of the wine is greatly improved. It will not be reduced, making wine a favorite high-end liquor. Pouring ordinary alcohol into a bioceramic jug for 24 hours can make the mouthfeel equivalent to 30 years old wine in the cellar. The components in the bioceramics can harmonize and alcoholize alcoholic and other ingredients, remove harmful impurities, reduce alcohol, and have side effects on people.
● Deodorizing ceramics Japan has developed a new ceramic that can exert excellent deodorizing effect at low temperatures. Its appearance is a rectangle with a thickness of 1 cm or less, with 200 to 250 meshes, honeycomb, and it is water-resistant, freeze-resistant, and firm. It is suitable for applications in refrigerators and air conditioners. It does not require energy and can be used continuously for more than 10 years.
The new ceramic is made of manganese oxide as a raw material and is blended with five kinds of oxides. It can cause odor components such as methyl mercaptan, which causes decay of vegetables and fruits, to be adsorbed on the surface of activated ceramics and oxidized and decomposed into carbon dioxide and water. Deodorizing effect.
●Ceramic Membrane A ceramic membrane developed by Tokyo A&M University in Tokyo to treat molasses to increase ethanol yield is a ceramic MF membrane with a pore size of 0.05 μm. It can be used to pretreat molasses, which is used as raw material for alcohol production, to remove inorganic salts, non-fermentable sugars, and ash containing coloring substances in molasses, which have an obvious effect, and can greatly increase the yield of fermented alcohol. More than 18% increase in fermentation and 30% in semi-continuous fermentation. The residual sugar after fermentation was 42% lower than that without pretreatment of molasses, and the pollutants in the waste liquid were greatly reduced, which greatly reduced the pollution of waste water and the treatment cost of waste water pollution.
● Porous Ceramics Japan uses porous ceramics as a bioreactor to treat high-concentration food wastewater. The bacteria are fixed on the porous ceramic inside the ceramic reactor. For example, the waste liquid of the soybean juice passes through the ceramic reactor in which the bacteria are fixed, and the BOD (biological oxygen demand) in the waste liquid can be removed by more than 90%, and the waste can be recovered and digested. Gas as energy, the effect is better than other methods to deal with bean juice wastewater. This device is also suitable for the treatment of other high-concentration food wastewaters.
●Fine Ceramics Many national research institutes in Japan and National University of Japan develop fine ceramics, which have high strength, high corrosion resistance, high wear resistance and other excellent properties at high temperatures. The tensile strength is equal to that of iron, and the reliability is high. The resistance is 1250°C. Above the extremely high temperature.
The ceramic is suitable for cutting-edge products used in airplanes and high-efficiency thermal energy facilities and is not a range of food packaging materials.

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