Nowadays, the demand for food packaging materials is getting higher and higher, which requires not only aesthetics, but also the ability to maintain the color, aroma, and taste of the contents. People have invented high barrier fresh-keeping packaging sheets for this purpose.
The high-resistance fresh-keeping packaging sheet has excellent gas barrier properties and moisture barrier properties, prevents the intrusion of oxygen and causes oxidation, thereby reducing the quality of the contained foods, and can maintain the flavor of the interior foods for a long time, and prevents intrusion of bad odors from the outside. Foods packaged in this sheet can be stored at room temperature and their shelf life can reach over 12 months.
The high-resistance fresh-keeping packaging sheet is made of polyvinylidene chloride resin (PVDC) or ethylene-vinylalcohol copolymer (EVOH) as a barrier material with a high barrier property. PVDC and EVOH have good performance in blocking oxygen and water vapor, and are easy to process and non-toxic. They meet the requirements of food processing and environmental protection and are widely used in Europe, America, Japan, and other developed countries. Taking EVOH as an example, when the thickness is 20 μm and the ambient temperature is 22.3°C, the oxygen permeability is only 0.scm'/In·dny·bar. The structural layer of the high barrier fresh-keeping packaging sheet tree can be made of polypropylene or polystyrene, and the adhesive layer is used to bind the barrier layer and the structural layer together. The high-resistance fresh-keeping packaging sheet is easy to mold and can withstand a high temperature of 121°C. Since the high-resistance fresh-keeping packaging sheet has a good molding property, it is easy to be made into a grid shape, so that a box can contain several kinds of meals and the appearance can be made transparent or various colors. Metal cans are hard to do.
Due to the superior performance of the high-impervious fresh-keeping packaging sheet, its application fields are very wide. In addition to packaging jelly, high-grade meat foods, fast food rice can also be used in this package. In Europe, America, Japan and other developed countries, high-barrier packaging has been widely used in canned foods, lunch boxes and microwave foods. In recent years, this new type of packaging materials has also been increasingly concerned by domestic food processing companies. The fruit jelly sold in the city is now packaged in this material.
At present, Beijing, Shanghai, and Shantou have already produced high-impedance fresh-keeping packaging sheets. The co-extruded plastic sheet branch company of Beijing Changkong Industry Co., Ltd. is a professional manufacturer of this sheet material. It has a seven-layer co-extrusion production line introduced from the United States, and has perfect testing methods and supporting facilities.
The high-resistance fresh-keeping packaging sheet has excellent gas barrier properties and moisture barrier properties, prevents the intrusion of oxygen and causes oxidation, thereby reducing the quality of the contained foods, and can maintain the flavor of the interior foods for a long time, and prevents intrusion of bad odors from the outside. Foods packaged in this sheet can be stored at room temperature and their shelf life can reach over 12 months.
The high-resistance fresh-keeping packaging sheet is made of polyvinylidene chloride resin (PVDC) or ethylene-vinylalcohol copolymer (EVOH) as a barrier material with a high barrier property. PVDC and EVOH have good performance in blocking oxygen and water vapor, and are easy to process and non-toxic. They meet the requirements of food processing and environmental protection and are widely used in Europe, America, Japan, and other developed countries. Taking EVOH as an example, when the thickness is 20 μm and the ambient temperature is 22.3°C, the oxygen permeability is only 0.scm'/In·dny·bar. The structural layer of the high barrier fresh-keeping packaging sheet tree can be made of polypropylene or polystyrene, and the adhesive layer is used to bind the barrier layer and the structural layer together. The high-resistance fresh-keeping packaging sheet is easy to mold and can withstand a high temperature of 121°C. Since the high-resistance fresh-keeping packaging sheet has a good molding property, it is easy to be made into a grid shape, so that a box can contain several kinds of meals and the appearance can be made transparent or various colors. Metal cans are hard to do.
Due to the superior performance of the high-impervious fresh-keeping packaging sheet, its application fields are very wide. In addition to packaging jelly, high-grade meat foods, fast food rice can also be used in this package. In Europe, America, Japan and other developed countries, high-barrier packaging has been widely used in canned foods, lunch boxes and microwave foods. In recent years, this new type of packaging materials has also been increasingly concerned by domestic food processing companies. The fruit jelly sold in the city is now packaged in this material.
At present, Beijing, Shanghai, and Shantou have already produced high-impedance fresh-keeping packaging sheets. The co-extruded plastic sheet branch company of Beijing Changkong Industry Co., Ltd. is a professional manufacturer of this sheet material. It has a seven-layer co-extrusion production line introduced from the United States, and has perfect testing methods and supporting facilities.
China Packaging News Li Hongyu
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