In the 1980s, flexible packaging testing instruments began to enter China. Some national quality inspection agencies and universities purchased or imported directly through associations. At the same time that some companies introduced production equipment, the instruments were bundled together and the frequency of use was extremely low. The domestic instruments are almost blank. Product quality consciousness is also very weak, lack of understanding of the importance of material testing, and slow development.
In the 1990s, with the development of the flexible packaging industry, the research on domestic testing equipment gradually appeared, but it was still slow, and the packaging tests were mainly paper packaging tests. By the late 1990s, there was a gradual increase in testing research on flexible packaging, such as Jinan Mingwei Testing Technology Co., Ltd., which specializes in the development and research of flexible packaging testing instruments, and has continued to grow, which has greatly promoted the progress of the industry.
After the country increased the standard system and the introduction of foreign advanced standards, it has greatly promoted the progress of detection technology. Some well-known domestic state-owned assets, foreign capital, joint ventures, collectives, private companies, and companies with high-quality requirements have obviously strengthened the quality inspection requirements, set up special quality control departments, purchased inspection equipment, and conducted quality control, especially in the above. In the late 1990s, this phenomenon was even more pronounced. 。 The demand for experimental instruments has also entered a period of rapid development .
Jinan Mingwei Testing Technology Co., Ltd., a domestic instrument manufacturer, has continuously invested in research and development and put professional, serial and cost-effective instruments on the market, making it possible for rapid growth of test instruments. Professional research and development of flexible packaging quality inspection equipment, breaking the monopoly of imported products. In recent years, the improvement of the overall domestic industrial technology level has led to a new understanding of domestic instruments and increased trust. Many original manufacturers using imported instruments have also purchased domestic instruments, because the maintenance service of imported products is not as simple as imagined, and the maintenance cost is too high.
At present, the degree of automation of flexible packaging experiment equipment is increased, the results are more accurate, and the time is greatly shortened. For example, the high temperature resistance of high temperature cooking bags. In the past, many manufacturers only used household pressure cookers for testing. Too many factors reduce accuracy. With the development of the food flexible packaging industry, gas packaging and modified atmosphere packaging have also been widely used, and expanded to more fields (such as chemical industry, pesticides, etc.), so the corresponding test items are also increasing and changing, so the barrier properties The test should consider not only oxygen, carbon dioxide, nitrogen, but also organic odor. The equipment is more specialized, like a smart tensile testing machine. A device can be used for the tensile strength, elongation, tearing, peeling, heat seal strength test, puncture force test of flexible packaging materials, and each test has Independent professional software, truly professional and intelligent.
As the mainstream packaging form today, plastic packaging is widely used in the packaging of various commodities, especially in the food industry. Our daily consumption of liquid / semi-liquid food, powdered food, solid food, etc. are mainly plastic packaging. At present, commonly used food packaging materials for food include polyethylene, polyvinyl chloride, polypropylene, polyester, polyvinylidene chloride, and polycarbonate. Different materials have different applications due to their different characteristics. Usually, we use materials according to actual needs. The different characteristics of the composite use.