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Current Situation and Development Direction of Rice Plastic Packaging Bag

With the improvement of people’s living standards, the quality of rice is required to be higher and higher. Packaging bags, as an effective method to ensure the quality of rice, are increasingly challenged. 1、 Packaging materials The packaging methods of various kinds of rice in supermarkets are different, but the materials used for rice packaging are basically common. Generally speaking, plastic woven bags and composite packaging bags are commonly used now. 1. Plastic woven bag The plastic woven bag is woven with a narrow band of a certain width made of plastic film (polypropylene, polyethylene and other films). The plastic woven bag is woven by crossing narrow belts, with high tensile strength, small deformation and good impact resistance. The woven bag surface has woven lines, which improves the anti-skid performance and is convenient for storage and stacking. Due to the good capacity of plastic woven bags, rice with a weight of more than 5KG is almost completely packed with plastic woven bags. 2. Composite plastic bag Composite plastic bag is made of packaging film PET, PA, BOPP and PE, CPP through compounding and bag making. It has good moisture-proof, mildew proof and insect proof effects. Due to the good printing performance of PET, NY and BOPP, the package can be equipped with exquisite printing patterns, and the trademarks, words and barcodes are clearly visible, which can well attract customers’ attention. Because the compressive strength of the plastic packaging bag is not enough and the capacity is poor, rice weighing less than 5KG is generally packed in composite plastic bags. 2、 The packaging method of plastic packaging bags: rice is directly exposed to the air, which is easy to absorb water and oxygen, and the role of metabolism will be greatly accelerated. Therefore, reducing the content of water and oxygen in plastic packaging bags is an effective way to extend the quality of rice in plastic packaging bags. 1. After the rice is packaged in the vacuum packaging plastic packaging bag, vacuumizing can greatly reduce the air content in the packaging bag, so as to inhibit the metabolism of rice and the reproduction of mold, prevent rice from aging, mildew, insects, etc., and maintain the quality of rice. However, due to the vacuum treatment after waking up, the packaging material quietly wraps the rice. The rice itself has sharp ends. If the inner material of the plastic packaging bag has poor toughness and puncture resistance, it is easy to be punctured by the rice grains. Moreover, the friction, collision and drop between bags during the transportation and sales of packaging bags are also easy to cause bag breakage, resulting in the failure of vacuum packaging. 2. Inflatable rice plastic bags are usually filled with carbon dioxide and nitrogen, which are colorless, odorless, non-toxic gases with relatively stable chemical properties. Rice can absorb carbon dioxide, and form a gas protective layer on the rice surface, so that the rice is in a “sleep” state, so that the changes of fatty acids, proteins and other chemical components in the rice are relatively small, extending the effective shelf life; Nitrogen filling reduced the oxygen concentration in the storage environment, inhibited the growth of microorganisms in rice, and played an important role in slowing down the change of quality. However, due to the poor compressive strength of composite bags, some inflatable packages often break during transportation, which affects the shelf life of rice. 3、 The development direction of rice plastic packaging bags The plastic packaging bags for rice are due to the defects of the current material performance or the lack of technical level; It is easy to break the packaging bag, which brings great trouble to the storage and sales of rice. The overall level of rice packaging is at a low level. Even though I have produced greasy rice in many places, the quality of greasy rice cannot be maintained due to the defects in packaging. Therefore, research on new materials and improvement of packaging technology have become an important direction for the development of rice packaging bags. 1. The innovation of packaging materials is to solve the problem of no compression resistance and poor puncture resistance of rice plastic packaging bags. Now PE manufacturers have developed special PE for rice packaging. By improving the formula of PE, more soft and good toughness polyethylene is introduced into PE to improve the overall toughness and puncture resistance of PE. PE for rice packaging is compounded with NY. Combined with NY’s excellent puncture resistance, the composite packaging bag produced has good puncture resistance, which can well meet the use of vacuum packaging for rice. Moreover, because of the excellent toughness of PE for rice packaging, more manufacturers have produced plastic packaging bags that can hold more than 10KG of rice, which must break the pattern that plastic packaging bags for rice can only hold small volumes of rice. 2. The development of packaging appearance The plastic packaging of rice has always used the middle sealing bag, the three side sealing bag, the organ bag and other bag types. However, with the development of new materials, the capacity of rice packaging is gradually increasing, and how to improve the weight bearing function of the packaging bag by hand has become a topic for the development of rice packaging bags. 4、 The conclusion is to highlight the rice brand and ensure the quality of rice. Rice packaging is particularly important. It is believed that with the continuous development and application of various new materials and the reform of various packaging technologies, the rice soft packaging bags will make great progress.

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