Flexible Packaging Materials Testing Technology

We all know that the development of China's flexible packaging materials is only a matter of nearly two decades, especially in the past decade, large-scale introduction of raw material film production equipment, printing equipment, and composite equipment, and more and more flexible packaging materials have been produced, developed, and used. New products and new materials emerge in endlessly. The evaluation of physical properties of materials becomes more and more important. Test techniques and various performance test method standards have also been produced one after another. Testing of plastic flexible packaging materials in order to correctly grasp the various properties of plastics, which controls the quality of plastic products, It is of great significance to guide processing, study the physical properties and structural relationships of plastic materials, and understand the scope of use. The development of test equipment can be said to have evolved along with the economic development.

First, the development stage

1, the understanding stage of test instruments

In the 1980s, soft packaging test instruments began to enter China. Some national quality inspection agencies and colleges and universities purchased through the association or directly imported. Some companies introduced the production equipment at the same time, the instruments were bundled together, and the frequency of use was extremely low. Domestic instruments are almost blank. The awareness of product quality is also very weak. The importance of material testing is not well understood and development is slow.

2. Slow growth of test instruments

2.1 From the early 1990s to the late 1990s, with the development of flexible packaging industry, the research of domestic testing instruments gradually appeared, but it was still slow. The packaging testing was mainly based on paper packaging testing. By the late 1990s, testing and research in flexible packaging gradually increased. Jinan Languang, which specializes in the research and development of flexible packaging test instruments, has continued to grow and develop, which has greatly promoted the progress of the industry; companies that specialize in importing test instruments have also grown up. The soft packaging market undoubtedly played a certain role, but the high prices and many factors of imported products have limited the development of inspection of flexible packaging products.

2.2 The State has increased the formulation of standards and the introduction of advanced foreign standards, which has greatly promoted the progress of inspection technology.

2.3 The universities and colleges of the Zhuzhou Institute of Technology, which are headed by the Department of Packaging Engineering, have continuously increased the research on flexible packaging materials and successively set up related courses. The research institutes and quality inspection institutes also pay more and more attention to the research and inspection of flexible packaging products.

2.4 Some domestic well-known state-owned assets, foreign capital, joint ventures, collectives, private companies, and companies that have high quality requirements for products have obviously strengthened the requirements for quality inspection, established special quality control departments, purchased equipment, and conducted quality control, especially at 90 In the later years, this phenomenon was even more pronounced. However, a considerable number of companies are mainly based on inspections, and there is not enough emphasis on quality control.

3. Since the beginning of the 21st century, the demand for test instruments began to grow at a high rate

3.1 Intensified market competition. World-class packaging and printing companies are rapidly increasing their presence in China with absolute control, the establishment of wholly-owned manufacturing companies and holding companies, mergers and acquisitions of competitive companies in China, and they have brought new ideological awareness. Domestic packaging companies are aware of the crisis and huge Opportunities, spare no effort to improve the competitiveness of their own companies through various means, many companies generally realize that product quality is the life of an enterprise and an important guarantee for the survival and development of an enterprise. The quality of products has been valued by more and more companies. One of the important links in improving product quality is quality inspection, and inspections by quality inspection departments on a regular basis. It does not fundamentally solve quality problems, and inspection costs are expensive. Therefore, a considerable number of companies set up their own quality inspection departments, purchase inspection equipment, and carry out self-checking anytime anywhere. The demand for experimental instruments has entered a period of rapid development.

3.2 The impact of the country’s macroeconomic policies, the State Food and Drug Administration (SFDA) puts forward updated requirements for the safety of food and drug soft packaging. Newly announced 35 items of drug packaging standards, SFDA also plans to include 150 kinds of drug packaging materials in 2005 edition of China. The Pharmacopoeia of the People's Republic, which means that after several years the government has included drug packaging materials in drug management. In 2003, the State Council launched the food and drug safety project, and the State Food and Drug Administration officially listed. The local administrative bureaus of provinces and cities are also in full swing with the merger, adjustment, and establishment of the renamed and listed companies. The development of the above situation can clearly predict that food packaging and cosmetics packaging will gradually be incorporated into the scope of registration management.

3.3 More new requirements have emerged. Some enterprises that use packaging materials have also continuously added quality inspection equipment to test and test the materials sent by the manufacturers one by one. Whether each batch meets the requirements, this undoubtedly puts higher requirements on the manufacturers. Pharmaceutical companies like Hunan Jiuzhitang, Chengde Neck Back, and Jiangsu Sihuan have all purchased package quality inspection equipment to check on raw materials to ensure the shelf life of pharmaceuticals after they leave the factory.

3.4 The manufacturer of domestic instruments, Jinan Languang, is thriving, investing in research and development, and launching professional, serial, and cost-effective instruments to the market, making it possible for test instruments to grow at a high speed. Since the establishment of Jinan Languang, it has professionally researched and developed soft packaging quality inspection instruments, breaking the monopoly of imported products.

3.5 The improvement of the overall industrial technology level in China in recent years has given rise to a new understanding of domestically produced instruments and increased trust. Many manufacturers that originally used imported instruments have also purchased domestically produced instruments because the imported product repair service is not imaginary and the maintenance cost is too high.

3.6 There are obvious regional features. The more developed the economy, the more demanding the testing equipment will be. Like Guangdong's Shantou, Zhongshan, Dongguan, Jiangsu and Zhejiang, Shanghai, Shandong coast, Beijing and Tianjin and other regions.

Second, the development of soft packaging testing and problems

1, the status quo of technology

1.1 Flexible Packaging Experimental equipment has increased automation, results are more accurate, and time is greatly reduced, such as moisture permeability tester, the traditional test step is to first thermostat constant temperature, and then the sample is fixed on the moisture permeable cup into the thermostat The box was then removed at regular intervals and measured three times in a row, taking the average of three times. As a result, there are too many factors for human intervention, and when this is called, the temperature and humidity inside and outside are not the same, so the accuracy is greatly reduced. It usually takes about one week to measure a group of samples with the national standard method;

The Jinan Languang Moisture Permeability Tester draws on the national standard and draws on its strengths, uses fully automatic computer control, and is highly intelligent and automated. No manual intervention is required in the entire process, completely eliminating the impact of artificial weighing or ambient temperature on the national standard. The errors are compatible with relevant international standards. And the test cycle is short and the test process is short, which can save time and improve efficiency. It can also be checked at any time, and the temperature control accuracy is ±0.5 degrees.

1.2 software features enhanced. Such as can store a large number of experimental data, editing, curve analysis, superposition, at any time classified search, etc., more convenient to study.

1.3 The test standards have been continuously improved in recent years. Such as ventilation GB/T1038-2000, the development of moisture permeability GB/T 16928-1997, etc., but also constantly introduce new standards to meet the needs of development.

1.4 The number of inspection items continues to increase. 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 chemicals, pesticides, etc.), so the corresponding test items are also increasing and changing, and therefore barrier properties. The test should not only consider oxygen, carbon dioxide, nitrogen, but also organic odors.

1.5 Equipment is more professional. Like a PC intelligent electronic tensile testing machine, a device can be used for the tensile strength, elongation, tearing, peeling, heat sealing strength test, puncture strength test, etc. of flexible packaging materials, and each experiment has an independent professional software. Realize professionalization and intelligence.

1.6 The domestic experimental equipment has achieved a breakthrough in technology. The air permeability tester and moisture permeability test developed by Jinan Languang, the technical team of Economic Nannan Science and Technology Bureau's technical report, technical usage report, other related materials, and equipment for the Jinan Languang Permeability Tester and moisture permeability tester passed Careful research and discussion have unanimously concluded that the technology of the two products of the flexible packaging barrier test has reached the leading domestic and international advanced level. The two products have been tested by Tianjin Institute for Drug Control, State Drug Quality Supervision Bureau and other quality inspection departments, Shanghai Quality Inspection Institute, National Light Industry Product Quality Supervision and Inspection Center, etc. Hunan Jiuzhitang, Shantou Jialilong, Shanghai Yuanfang, and other well-known enterprises, Zhuzhou The printing and packaging engineering department of the Faculty of Engineering was used by colleges and universities and received their approval.

2, there is a problem

2.1 The national standards are lagging behind, and some new products do not have relevant standards.

2.2 The use environment of some unit instruments is not enough, even very bad, and seriously affects the test results.

Third, the latest developments in flexible packaging testing technology

1. Establishing a complete laboratory system and networking each laboratory instrument will not only reduce the burden on users of data collection and management, but also improve the accuracy and credibility of the collection.

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

3, more advanced testing methods continue to emerge.

3.1 The cup-type moisture permeability tester will be developed for multi-cavity testing to further improve test efficiency.

3.2 A multi-head heat sealer (ie, a gradiometer) will be widely used.

3.3 The organic matter penetration meter is expected to come out recently.

4, domestic instruments will occupy a larger market with its many advantages

5. As soft packaging inspection items increase with the market demand, 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 dissolution of substances, heavy metals, oxides, not Volatile substances, microbial limits, abnormal toxicity and other experimental items.