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Rice packaging bag size and material which is good

Rice vacuum bags, whole grain vacuum bags, and vacuumed nylon bags are all composite bags, that is, one, two or more base films (heat-sealing PE film, CPP, OPP) and nylon (better air tightness) or PET pass through The special glue for film is bonded to form a film by laminating machine. It is made by a bag cutting machine and has the best sealing performance after vacuuming. It has strong air barrier properties, anti-oxidation, waterproof and moisture-proof mechanical properties, high blast resistance, strong puncture resistance and tear resistance, high temperature resistance (121 ° C), low temperature resistance (-50 ° C). Non-toxic, tasteless and in line with national standards, good heat sealing performance and good transparency. Rice packaging bags can be divided into two types according to the material: vacuum bags and woven bags. According to the bag type, it is divided into three types: hand button bag, three-side sealing bag, rice brick bag. According to the weight: 500g, 1kg, 2kg, 2.5kg, 3kg, 5kg, 10kg and other specifications. The choice of packaging is the first choice, with good protection, good safety, good processability, reasonable cost, and compliance with packaging standards and regulations to ensure the quality of rice. Rice vacuum packaging bag is a kind of packaging with excellent sealing performance. Rice packaging bags usually use woven bags. The process is to color-print OPP film, pearl film and matt film, and then compound them with transparent woven cloth to make bags! The specifications of our rice bags are: 5kg, 10kg, 15kg, 20kg, 25kg, 50kg, etc. The size, layout design, color, weight and thickness can be customized according to demand. Aluminum foil bag, plastic packaging bag dimensions are as follows: 5kg: width 30cm × length 45cm, 10kg: width 35cm × length 55cm, 15kg: width 40cm × length 62cm, 20kg: width 45cm × length 70cm, 25kg: width 45cm × length 75cm, 50kg : Width 55cm × Length 95cm The packaging form of rice is determined by the material. The commonly used materials are mainly plastic woven bags and composite plastic bags. Therefore, the corresponding packaging forms are divided into three types: ordinary packaging, vacuum packaging and inflatable packaging. 1. Ordinary packing of rice Ordinary packing of rice is to use plastic woven bags made of polypropylene and other materials to pack the rice and seal it with sutures. No fresh-keeping technology is applied during the packaging process, and the packaging has relatively poor effects on insect control, mildew prevention and fresh-keeping, and generally can only accommodate food. Plastic woven bags have strong tensile strength, and rice with a packaging weight above this is mostly used in this type of packaging, and the shelf life is about three months. The woven bag is made of plastic film into a narrow strip of a certain width, or woven from a plastic flat strip with high strength and low elongation obtained by thermal stretching. Plastic woven bags have much higher strength than plastic film bags, are not easy to deform, and have good impact resistance. The packaging of rice weighing more than 5kg is almost entirely made of plastic woven bags. Tea packaging bags and composite packaging bags use plastic woven bags to package rice. The packaging method is simple, the material has poor moisture resistance, poor barrier properties, rice is easily oxidized and mildewed, the phenomenon of pest damage is more serious, and the storage period in summer is short. This packaging method is not recommended. 2. Rice vacuum packaging adopts vacuum packaging, which can reduce the O2 concentration in the storage packaging, inhibit the respiration intensity of the rice and the reproduction of mold, prevent the rice from stale, moldy, insects, etc., and better maintain the quality of the rice. At present, the vacuum degree selected for vacuum packaging of rice is generally between -0.07~-0.09 kPa. Due to the high degree of vacuum, the packaging material tightly wraps the rice, and the packaging bag is easily punctured by rice grains, resulting in the failure of the vacuum packaging. In the process of circulation, friction, collision and drop between bags can also easily cause the bags to be broken. Therefore, the fresh-keeping packaging of rice should be combined with the circulation environment, so as to achieve good results. Most of the packaging methods in the market are used. Food packaging bags, vacuum packaging bags 3. Rice inflatable packaging Inflatable packaging is generally filled with CO2 and N2, which are colorless, odorless, non-toxic gases with relatively stable chemical properties. Rice has the ability to absorb CO2, forming a protective layer, making the rice in a “sleep” state, so that the changes in fatty acids, total acids, reducing sugars, and viscosity are relatively small, extending the effective shelf life; filling N2 reduces the O2 concentration in the storage environment, inhibiting the The growth of microorganisms in rice plays an important role in slowing down the changes in quality. Most studies have shown that air-filled packaging can effectively maintain the quality of rice and prevent rice from mildew and insects. Both vacuum packaging and inflatable packaging are made from composite plastic bags of rice. Composite plastic bags are made of high-barrier packaging materials EVOH, PVDC, PET, PA and PE, PP and other multi-layer plastic composites. This packaging is more moisture-proof, mildew-proof and insect-proof than plastic woven bags. In addition, the pattern and trademark printing are very clear, and the text and barcode are clearly visible, which is easy to attract customers and promote sales. Most of the rice packages weighing less than 5kg are packaged in composite plastic bags. Food bags, packaging bags Use composite plastic bags to package rice, usually supplemented by vacuuming or inflation technology and then heat-sealed. Due to the compactness of the material itself and the treatment of vacuuming and inflating, it basically solves the problems of mildew-proof, insect-proof and quality assurance on rice packaging, and has certain promotion and practical value. However, the composite bag packaging is prone to wrinkling during sealing and heat sealing, which will affect the aesthetics of the packaging bag. In addition, the compressive strength of the composite bag is not enough, and some of the inflatable packaging often breaks the bag during transportation, which affects the shelf life of the rice. Furthermore, the use of plastic bags is restricted due to the fact that plastic bags are not easy to degrade, post-processing is difficult, and the toxicity of plastic products.

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