China is a major tea-consuming country. In the process of tea transportation and sales, good packaging can not only ensure the health and quality of tea sales, but also prevent the loss of tea fragrance. With the development of the flexible packaging industry, flexible packaging is increasingly used in tea packaging. The more common tea flexible packaging materials are opaque plastic bags, aluminum foil bags, nitrogen atmosphere packaging, vacuum aluminum coating and so on. As we all know, tea performance is highly susceptible to environmental impacts. Chlorophyll, vitamin C, catechins, theaflavins and thearubigins, amino acids, and aromas in tea are all sensitive to oxygen, water vapor, light, and odors. Therefore, the materials used for tea packaging must have the functions of moisture-proof, gas-barrier, and light-proof. Because the barrier properties of various packaging materials are different, the effect of preventing the deterioration of tea leaves will be very different. Moreover, as consumers increasingly demand for product packaging, as a tea packaging but also to achieve good processing performance, heat seal, convenient, free-style, a certain degree of mechanical strength and chemical resistance, in line with the health standards of packaged foods, etc. . In order to meet the above requirements, it is necessary to control the quality and performance of the packaging materials by using the corresponding testing instruments with reference to relevant national standards. Through systematic investigation and analysis, we believe that in order to meet the relevant requirements of tea packaging, the following national testing standards and testing instruments are more applicable: 1, the plastic film oxygen barrier performance test. The method can refer to GB 1038. Testing instruments are available with VAC-V1 gas permeameter, TOY-C1 thin film/container oxygen permeability meter, and BTY-B1 gas permeability tester. 3, the sealing performance of the soft package test, test methods refer to GB/T 15171?94. Testing equipment can use MFY-01 sealing tester. 4, material breaking force, tensile strength test. The detection method can refer to GB 13022?91. The testing equipment can choose XLW intelligent electronic tensile testing machine or XLW (L) PC intelligent electronic tensile testing machine. 5, plastic film packaging heat sealing strength determination, detection methods can refer to QB/T 2358 standard. The testing equipment can use HST-H1, HST-H2 heat sealing tester and intelligent electronic tensile testing machine or PC type intelligent electronic tensile testing machine. 6, soft composite plastic material peel test, test methods can refer to GB 8808? 88. Testing equipment can be used BLD-200S electronic peel testing machine, intelligent electronic tensile testing machine or PC type intelligent electronic tensile testing machine. Everyone knows that there are a few longevity villages in China, and I live in one of them. I have lived here for 22 years, where chrysanthemums are everywhere and fragrant. Every morning, Grandma would make a pot of chrysanthemum tea and do other things after drinking. Grandma said, "Chrysanthemum can be used as medicine to cure diseases, chrysanthemum tea can make people live longer, chrysanthemum can also be made into exquisite delicacies." Grandma often cooks a dish called "chrysanthemum meat", "chrysanthemum meat" is a kind of chrysanthemum which has been made through long-term exploration. It is made from a piece of white tender pork processed by boiling sucrose pulp. It*s exquisite and exquisite, like white jade. Each piece is covered with a few chrysanthemum petals, which are full of fat, sugar and sweetness. The golden color is observed. The meat in the mouth is vegetable, and the meat in the vegetable is sweet and not greasy. It is really a famous dish. Grandma said that her ancestors did so. Slowly, everyone used it, and the village gradually became a longevity village. Dried Chrysanthemum,Dried Chrysanthemum Flowers,Organic Chrysanthemum,Honey Chrysanthemum Tea Lixian Spring Pharmaceutical Co., Ltd. , https://www.lxctyy.com
2. Water vapor barrier performance test of plastic film. The method can refer to GB 1037. TSY-T1, TSY-T2, and TSY-T3 moisture permeability testers can be used as testing instruments. Under normal circumstances, materials with a moisture permeability of less than 1 (g/m2/day) should be used as much as possible.