Current situation and new development trend of the

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As we all know, the development of flexible packaging materials in China has only been in the past two decades, especially in the past decade, through the large-scale introduction of raw material film production equipment, printing equipment, composite equipment, etc., the production, development and use of flexible packaging materials are increasing, new products and materials are emerging in endlessly, and the physical property evaluation of materials is becoming more and more important, Testing technology and various performance test methods and standards have also been produced. In order to correctly grasp the various properties of plastic, the testing of plastic flexible packaging materials is of great significance to control the quality of plastic products, guide processing, study the physical properties and structural relationships of plastic materials, and understand the scope of use. The development of testing instruments can be said to be developing with the development of economy

I. development stage

1. Understanding stage of testing instruments

in the 1980s, flexible packaging testing instruments began to enter China. Some national quality inspection institutions and colleges and universities purchased or imported directly through associations. Some enterprises imported production equipment at the same time, the instruments were bundled, and the frequency of use was very low. Domestic instruments are almost blank. The awareness of product quality is also very weak, the importance of material testing is insufficient, and the development is very slow

2. The slow growth of testing instruments

2.1 from the early 1990s to the late 1990s, with the development of flexible packaging industry, the research on domestic testing instruments gradually appeared, but it is still slow. The packaging testing is mainly paper packaging testing. By the late 1990s, the testing research on flexible packaging has gradually increased, such as Jinan Languang, which specializes in the research and development of flexible packaging testing instruments, has continued to grow, greatly promoting the progress of the industry; There are also more companies specialized in importing testing instruments, which undoubtedly play a certain role in the flexible packaging market, but the high price of imported products and many factors limit the development of flexible packaging product inspection

2.2 the state has increased the number of musical instruments that can produce different sounds in the same shape. The formulation of standards and the introduction of foreign advanced standards have greatly promoted the progress of detection technology

2.3 the research on proofreading flexible packaging materials led by the Department of packaging engineering of Zhuzhou Institute of technology is increasing, and relevant courses have been opened one after another; Research institutes and quality inspection institutes have paid more and more attention to the research and inspection of flexible packaging products

2.4 some well-known domestic state-owned, foreign-funded, joint venture, collective, private enterprises and companies with high quality requirements for products have significantly strengthened the requirements of quality inspection, and set up special quality control departments to purchase equipment and carry out quality control, especially in the late 1990s, this phenomenon is more obvious. However, a considerable number of enterprises have accelerated the development of e-commerce, which has become an inevitable choice for the domestic plastic 5 gold industry to cope with the challenges of economic globalization, take the initiative in development and improve international competitiveness, mainly focusing on inspection, and paying insufficient attention to quality control

3. Since the beginning of the 21st century, the demand for testing instruments has begun to grow at a higher rate

3.1 market competition has intensified. The world's first-class packaging and printing enterprises are accelerating their development in China by absolutely holding shares, establishing wholly-owned production enterprises and holding companies, mergers and acquisitions of Chinese advantageous enterprises, etc. they have brought new ideology. Domestic packaging enterprises are aware of the crisis and great opportunities, and spare no effort to improve the competitiveness of their enterprises through various ways. Most enterprises realize that product quality is the life of enterprises, It is an important guarantee for the survival and development of enterprises. Product quality is valued by more and more enterprises. One of the important links to improve product quality is quality inspection. Regular inspection in the quality inspection department can not fundamentally solve the quality problem, and the inspection cost is expensive. Therefore, a considerable number of enterprises set up their own quality inspection departments to purchase inspection equipment and conduct self inspection anytime and anywhere. The demand for experimental instruments has entered a period of rapid development

3.2 under the influence of national macro policies, the State Food and Drug Administration (SFDA) has put forward updated requirements for the safety of food and drug flexible packaging, and has newly issued 35 standards for drug packaging materials. SFDA also plans to include 150 kinds of drug packaging materials in the 2005 edition of the Pharmacopoeia of the people's Republic of China, which means that the government will include drug packaging materials in drug administration a few years later. In 2003, the State Council launched the food and drug safety project, and the State Food and drug administration was officially listed. The local administrations of various provinces and cities are also busy with the merger, adjustment and establishment of renaming and listing. The development of the above situation can be clearly predicted that food packaging and cosmetics packaging will gradually be included in the scope of registration management

3.3 there are more new requirements. Some enterprises using packaging materials also continue to purchase quality inspection equipment to inspect and test the materials sent by manufacturers one by one, and whether each batch meets the requirements, which undoubtedly puts forward higher requirements for manufacturers. Pharmaceutical enterprises such as Hunan Jiuzhitang, Chengde Jingfukang and Jiangsu Sihuan have purchased packaging quality inspection equipment to check raw materials and ensure the shelf life of drugs after leaving the factory

3.4 Jinan Languang, a domestic instrument manufacturer, stands out alone, constantly investing in research and development and putting professional, series and cost-effective instruments into the market, making it possible for the rapid growth of testing instruments. Since its establishment, Jinan Languang has specialized in the research and development of flexible packaging quality inspection instruments, breaking the monopoly of imported products

3.5 in recent years, the improvement of the overall industrial technology level in China has made people have a new understanding of domestic instruments and increased their trust. Many manufacturers who originally used imported instruments have also purchased domestic instruments, because the maintenance service of imported products is not as expected, and the use and maintenance cost is too high

3.6 it has obvious regional characteristics. The more developed the economy is, the stronger the demand for testing instruments is. Such as Shantou, Zhongshan, Dongguan, Jiangsu and Zhejiang regions, Shanghai, Shandong coastal areas, Beijing and Tianjin in Guangdong

II. Relevant development and existing problems of flexible packaging testing

1. Technical status

1.1 the degree of automation of flexible packaging experimental equipment increases, the results are more accurate, and the time is greatly shortened, such as the moisture permeability tester. The traditional test step is to thermostatically stabilize the incubator first, and then fix the sample on the moisture permeable cup and put it into the incubator with the characteristics of no delamination, impact resistance, small elongation and tear resistance, Then take it out every certain time, measure it three times continuously, and take the average value of the three times. As a result, there are too many factors for human intervention, and the temperature and humidity inside and outside are different, so the accuracy is greatly reduced. It usually takes about a week to measure a group of samples with the national standard method

while referring to the national standard, Jinan Languang moisture permeability tester uses full-automatic computer control, high intelligence and automatic operation. The whole process does not need manual intervention, completely eliminating the errors caused by artificial weighing or the influence of ambient temperature in the national standard, and is compatible with relevant international standards. And the test cycle is short, and the test process time is short, which can greatly save time and improve efficiency. It can also be calibrated at any time, and the temperature control accuracy is ± 0.5 degrees

1.2 software function enhancement. For example, a large number of experimental data can be stored, curve analysis and superposition, classification and query at any time, which is more convenient for research

1.3 the test standard has been continuously improved in recent years. Such as the formulation of breathable GB/T and moisture permeable gb/t, and at the same time, new standards are constantly introduced to meet the needs of development

1.4 the inspection items are increasing. With the development of 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. Therefore, the barrier test should consider not only oxygen, carbon dioxide, nitrogen, but also high transmission efficiency and organic odor

1.5 the equipment is more professional. Like PC intelligent electronic tensile testing machine, a device can be used for the tensile strength, elongation, tear, peel, heat sealing strength test, puncture force test, etc. of flexible packaging materials, and each experiment has independent professional software, which truly realizes specialization and intelligence

1.6 domestic experimental equipment has made a breakthrough in technology. After careful research and Discussion on the technical report, technical use report, other relevant materials and equipment of Jinan Languang permeability tester and moisture permeability tester developed by Jinan Languang, the expert group of Nanshi science and Technology Bureau agreed that the technologies of these two products for the barrier test of flexible packaging have reached the domestic leading and international advanced level. These two products have been used by the Tianjin Institute for drug control, the National Bureau of drug quality supervision and other quality inspection departments, the Shanghai Institute of quality inspection, the National Center for quality supervision and inspection of light industrial products, well-known enterprises such as Hunan Jiuzhitang, Shantou jialilong, Shanghai Yuanfang, and colleges and Universities such as the Department of printing and packaging engineering of Zhuzhou Institute of technology, and have been recognized by them

2. Problems

2.1 some national standards are lagging behind, and some new products have no relevant standards

2.2 the use environment of some unit instruments is not paid enough attention, even very bad, which seriously affects the test results

III. The latest development of flexible packaging testing technology

1. Establishing a perfect laboratory system and connecting each laboratory instrument can not only reduce the burden of users on data collection and management, but also improve the accuracy and reliability of collection

2. With the development of technology, the software function of a single instrument is more perfect and powerful

3. More advanced testing methods continue to appear

3.1 cup moisture permeable instrument will be developed to multi cavity test to further improve the test efficiency

3.2 multi head heat sealing experimental instrument (i.e. gradient instrument) will be widely used

3.3 organic permeameter is expected to come out recently

4. Domestic instruments will occupy a larger market with their many advantages

5. With the increasing demand of the market, such as pharmaceutical packaging materials, the next five years will be a period of rapid development of China's pharmaceutical packaging industry. Such materials must increase the experimental projects of dissolved substances, heavy metals, easily oxidized substances, nonvolatile substances, microbial limits, abnormal toxicity and so on

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