Application prospect of the hottest PVDC in flexib

2022-09-28
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The application prospect of PVDC in flexible packaging

I. the all-weather high barrier advantage has developed rapidly in China in recent years. As a packaging material, PVDC is the only packaging material with high oxygen resistance and high humidity resistance in common polymers. Not only that, Its flexibility "Low temperature heat sealing, oil penetration resistance and corrosion resistance are top-notch. Therefore, it is not too much to call it an all-weather high barrier flexible packaging material. It has always been recognized by experts in the industry. Due to its unique advantages, although various plastic film varieties have been emerging for half a century, it has not been able to shake its leading position. That is, EVOH, which appeared in the 1980s, has very high oxygen resistance and unique environmental effects, but its resistance to moisture." Obvious decline, it must be protected from humidity; The middle strike can be understood through the workmanship of the equipment appearance. 12 can achieve the effect of high oxygen resistance, which greatly limits its scope of application. For another example, the barrier property of biaxially stretched pet and PA can only be called as the lower middle level, and their moisture or oxygen permeability is 10~100 times greater than that of PVDC. In the food market with extremely rich materials, merchants pay attention to shelf life. Therefore, the scope of application is also limited. In China, the real introduction and application of PVDC packaging began in the early 1990s. At that time, due to the limitations of living standards and market supply, PVDC packaging was limited to sausage and cigarette packaging, and there were few large-scale food packaging. At present, although the application of PVDC single film is still lingering in the field of meat intestines and fish intestines, and the large-scale fresh-keeping film has not yet opened the situation, the application of coated film with low cost and excellent moisture resistance and oxygen resistance in the food market is very prominent. Just take Futong company as an example. In the five years from 1999 to 2003, it developed from dozens of tons to more than 1000 tons. The absolute sales volume in 2003 increased by more than 400 tons compared with that in 2002. In terms of a certain food packaging, such as the cake packaging of "ShaQima", the sales volume in 2003 doubled compared with that in 2002. This simple data indicates that this vigorous growth rate in China's high barrier flexible packaging, along with the improvement of people's living standards, began to pursue the quality of life, requiring not only food and clothing, not only the abundance of food, but also convenient eating, fresh preservation and taste. The unique double high barrier and all-weather advantages suitable for modern packaging of PVDC are highlighted. At present, the development of PVDC flexible packaging in China has ended the dilemma of wandering for 10 years, showing a vibrant prospect

II. The market potential is commendable

in terms of the macro food packaging market, according to the data of PSP intelligence, the food packaging rate of Yan Mei, Europe and Japan has reached%, while the food packaging rate of China, India and Southeast Asia is only 5%. In the early stage, China always listed "shirtless food", even if the packaging was not hygienic and beautiful. In the past ten years, although there has been a great improvement, colorful small food packaging can be seen in the market, but the real share of high barrier packaging is very small. From the analysis of the current population share, it is 0.002kz/person year, which is only 1% of the annual consumption of the Japanese. The above two sets of data show that the potential market for food packaging is quite strong in both China and Southeast Asia. In the next 10 years, the market absorption of PVDC flexible packaging in China will increase by several to ten times. In particular, the development of a broad rural market, due to dispersion and long distance, high barrier food packaging is more prominent

in addition to the macro market potential, there are still fields that are very mature abroad and still belong to "frozen soil" in China to be developed. One is paper coating. In the United States, the application direction of PVDC products is mainly in two areas: one is. Plastic wrap is almost a household consumable. The second is paper coating, which accounts for 40% of the total consumption of PVDC. For fresh-keeping film, PE film with low price is popular in China; Hit, listed rarely, and paper coating has not been reported to be successful in large quantities, mainly due to cognition and corresponding cost problems. The second is the packaging of instant noodles. In Japan, 48% of kpet is used for instant noodle packaging and 18% of kPa is used for instant noodle soup packaging, but China has not really developed and used it so far. Although many companies agreed to try it out, they were finally rejected because the existing packaging could be maintained. In addition, PTP packaging of drugs can also be further developed. The year before last, Hangzhou plastic br factory developed the packaging of Chinese patent medicine with PVC/PVDC hard chips, which was the same year; The development trend of breaking the expectation of 25%. With the high requirements of drug packaging in China, pure PVC hard films cannot meet the requirements of moisture and oxygen resistance, and a large number of PVC/PVDC hard films will be applied to the drug market. In recent years, PVC/pvdcptp packaging in Europe and the United States has increased by 25% every year, which can be used for reference

III. a new trend worthy of attention

over the years, since the advent of PVDC began in World War II and was initially used in the military, it has cast a mysterious color. Of course, its founding enterprise also has many adult enthusiasts who are also obsessed with LEGO lumber. Dow Jones listed it as a non transferable technology. For decades, this product has been tightly blocked in China. At its most arrogant, it only provides terminal products, not even raw materials, that is, it only sells you films, not resins. The successful development of PVDC in our country has broken this technical blockade, making products, technologies and application equipment popular in our country, but its products are still flooded in our market. In recent years, due to the technological progress of China's PVDC processing industry, PVDC coating film has begun to be exported to foreign countries. Canada, the United States, Europe, South Africa, and even Argentina in South America have purchased goods, and the successful production and absorption of PET material has increased year by year. Only Futong company exported nearly 100 tons in 2003 from its tentative export in 2002. PVDC products have always been Xuanyao's high-tech monopoly products in western developed countries. In recent years, Why will it change from an exporter to an importer? According to our preliminary analysis, the price advantage is the main one. Due to the rapid development of plastic film in China in recent years, the price can compete with western countries. The second is technological progress. China's PVDC composite film lower guide main shaft (15) sub disc (16), linear ball bearing (17), two radial ball bearings (18), experimental force sensor (19), friction force sensor (20), thrust ball bearing (21), back nut (22), knurled screw 23, must operate (22) and (23) when replacing collets and loading and unloading various friction pairs. Linear ball bearing (17) can make the lower guide main shaft (15) move up and down, with small friction, light and flexible, It can make it have high sensitivity when applying experimental force, and the bearing (18) can make the digital display accurate and reliable when transmitting friction force (mainly coating film). Br its internal quality is by no means inferior to that of developed countries. From this phenomenon, it can be proved that PVDC packaging film, which has been popular in western countries for half a century, is still developing. Why would China doubt its application prospect

IV. PVDC coating film with more potential

according to China's economic status and people's cognitive level, PVDC coating film with low cost, high barrier and low material consumption is more competitive in the field of food and drug flexible packaging. PVDC copolymer latex, the raw material of PVDC coating film, is a kind of polymer aqueous dispersion. There is no solvent volatilization in the coating process, and it does not pollute the environment. Its main barrier component VDC (vinylidene chloride) accounts for%, so its moisture permeability and oxygen permeability are very low. In general, coating 3-5g/M 'on the base film such as BOPP, ope, OPA, etc. can achieve high barrier effect, that is, coating 2-31lm on the general plastic film can meet the long-term shelf life, which is more than times more effective than the ordinary base film. The PVDC single film, namely extruded film, has a barrier component of%, and its oxygen permeability is 200-250m1:lm/M2D, while the moisture permeability is 60-80g, LM/M2D. Generally, the film thickness is LM, and because the proportion of PVDC is large and the practical area is relatively small, the packaging cost is bound to be high, while the multi-layer coextrusion PVDC diaphragm is difficult in technology, low in yield and high in cost. Therefore, the current market level infers that the coated film PVDC is more superior in the field of flexible packaging

v. PVDC market and GDP

from the definition of GDP, it has nothing to do with PVDC, but we can see the clue from the distribution statistics of PVDC by Dow in the 1990s. All economically developed regions have large PVDC production, high consumption, and vice versa. In the Pacific region, including Asia and Australia, its main consumption was still in Japan, Australia, New Zealand and China. At that time, China accounted for 22% of the consumption in the Pacific region

as Australia and Asia are grouped together, their consumption is roughly the same as that of America and Europe, while that of taro is "0", which indicates that high barrier packaging is related to people's living standards. When people have enough to eat and wear and begin to pursue quality of life, that is, when GDP reaches a certain level, high barrier packaging consumption will emerge as the times require and develop in a timely manner; If people are still struggling for food and clothing, high barrier packaging is a luxury. Therefore, with the improvement of the economic income of our people, the development of high barrier packaging is very considerable

at the same time, it should be pointed out that China's self-developed 10000 ton PVDC production line has been completed, and the variety is also increasing year by year. Due to its foothold in China, its product cost is relatively low. With large-scale production, domestic PVDC packaging materials will further improve their competitiveness

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