Rice vacuum bags - — Food packaging manufacturer

Rice packaging form is determined by certain packaging materials, commonly used rice packaging materials mainly include plastic woven bag and compound two kinds of plastic bags, so the corresponding rice packaging form is divided into ordinary packaging, vacuum packaging and three kinds of inflatable packaging and common packaging with plastic packaging materials processing; Vacuum packing and filling is made of composite plastic materials. 1 ordinary packing of rice, rice, ordinary packaging is using polypropylene material such as plastic woven bag of rice in packaging, sealed with stitches. Did not exert any technology in the process of packaging, the packaging of rice insect-resistant, mouldproof, and preservation of the effect is relatively poor, normally only to hold the food. But as a result of plastic woven bag, strong tensile strength of the packing weight in rice more USES this kind of packing, shelf life in about three months. Plastic woven bag is made from plastic film a certain width of narrow band, or with hot stretching method to get high strength, elongation of small plastic woven flat belt. Plastic woven bag is much taller than the strength of the plastic bag, and not easy to deformation, impact resistance, have woven grain due to the surface of the bag at the same time, improve the skid resistance, easy to store when stacking. In more than 5 kg rice weight almost all packed in plastic woven bag material. Use plastic bag to packing of rice, simple way, material moisture resistance is poor, poor barrier property, easy oxidation of rice, mildew, pest phenomenon is relatively serious, especially in the summer storage life is shorter. Suggest do not use this kind of packing way. 2, rice vacuum packing using vacuum packaging, can reduce the concentration of O2 in the storage packaging, inhibit the respiration intensity of rice breeding, and mold prevent rice, mildew and insect, Chen to better maintain the quality of rice. Selection of rice vacuum packaging vacuum degree in general - 0. 07 ~ - 0. 09 between kPa. Because of its high vacuum degree, the packing material wrapped tightly, rice bags are easy to broken rice, and make the vacuum packaging of none effect. Bag with the bag in the process of circulation, collision and the friction between fall is also easy to cause packaging bag. So at the same time in the modified atmosphere packaging of rice must be combined and circulation environment, so as to obtain good effect. Accounted for most of this kind of packing way, on the market can contact packing 3, rice inflatable inflatable packaging is filling the CO2 and N2, generally they are colorless, odorless, non-toxic gas, relatively stable chemical properties. Rice has the ability of adsorption of CO2, form a protective layer, the rice is in 'sleep' state, and fatty acid, total acid, reducing sugar, viscosity change is relatively small, prolong the shelf life effectively; Filled with N2 O2 concentration reduces the storage environment, inhibit the growth of microorganisms in the rice, regarding the quality of the slow changes play an important role. Most research shows that the inflatable packaging can effectively keep the rice quality, prevent mildew and insect in rice. Vacuum packing and filling is made of rice, the composite plastic bags. Composite plastic bag is made of high barrier property of EVOH, PVDC packaging materials, PET, PA and PE, PP and other multi-layer plastic composite, this kind of packing than plastic woven bag packaging moistureproof, mouldproof, insect-resistant effect is better. Another design, trademark printing clearly, text, bar code is clearly visible, easy to attract customers, promote sales. Rice weight less than 5 kg in the vast majority of packed in compound plastic bag. Using composite plastic bag for packing rice, general with vacuum or heat sealing after aeration technology. Due to the density of the material itself and the process of pumping air into vacuum state, gas processing, basically solved the rice packaging mouldproof, insect-resistant, quality problems, have a certain promotion and practical value. But when compound bag packing in the sealing a thermal easy appear the wrinkling, affect the aesthetic of the packaging bags. In addition, the compressive strength of compound bag is not enough, some packaging, inflatable way in the transport process often appear broken bag phenomenon, thus affecting the shelf life of rice. Again, because the plastic bags is not easy to degrade, post-processing is more difficult, and plastic products have toxicity to make plastic bags used by certain constraints.