On the new trend and development of high barrier p

2022-09-22
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Discussion on the new trend and development of high barrier packaging

as a high barrier packaging material, PVDC composite film (including single film) has been consumed about 120000 tons worldwide every year. As a high barrier material, PVDC cannot be replaced by other materials at present

I. demand potential and low output

according to foreign statistics in the early 1990s, the annual consumption of PVDC coated composite film in the world is about 110000 tons. Its main distribution: 50000 tons in the Americas, 30000 tons in the Pacific region, 30000 tons in Europe, while Africa is blank. In the mid-1990s, according to the data released by Japan, the PVDC coated composite film has increased to 35700 tons, of which only BOP we launched the monprene in ⑵ 3000 series SBC composite material p/pvdc composite film has 27000 tons. At present, China consumes 15000 tons of PVDC resin and 1000 tons of latex (dry basis) annually. Attention should be paid to the electronic universal testing machine when making samples. In the past, almost all of them relied on imports. In the past two years, the domestic supply of PVDC latex accounted for about 20% of the total. In terms of production capacity, China's PVDC composite membrane has a production capacity of 5500 tons/year, and the actual operating rate is about 40%. The annual output of PVDC coated composite film is about 2500 tons. If such output is calculated on the average of population, it is only 1% of Japan's average population. The average is 02002kg/person. These data indicate the potential and hope of China's PVDC high barrier packaging market

second, the deformity of product application direction

PVDC high barrier packaging has a wide range of applications from military supplies to food and drugs. For decades, there has been a reasonable distribution in western developed countries, but at the beginning of the establishment of PVDC coated composite film in China, it has moved towards a deformity: high barrier food is "ignored" for its freshness, fragrance and taste. More than 90% of the products are used for cigarette packaging, while the packaging of food and drugs has been at a low level for ten years

the above figure shows the packaging distribution of BOPP coated PVDC composite film in Japan, which accounts for only 18% of cigarette packaging. 2%. If the total amount of kpet, knoy and other PVDC composite membranes is calculated, cigarette membrane accounts for 14%. It is not difficult for us to see how different PVDC coated composite films are in the application direction in China. PVDC coated composite film is mainly used in food packaging to make the best use of everything. Because PVDC has the functions of blocking moisture and oxygen, preserving fragrance, preserving freshness, preserving taste, and resisting oil seepage, it has played a perfect and lasting protective role in food. Cigarette packaging mainly uses its crisp, transparent, low-temperature heat sealing function, and does not care about its high barrier. The reason why it is accepted is that cigarettes are high consumption, and the increased packaging cost of high barrier materials accounts for little of its selling price. However, domestic food manufacturers are unwilling to use PVDC composite membrane. In addition to the traditional concept, the main reason is that the commodity market cycle is short, and the shelf life can be ignored. As for the protection of the commodity itself and the maintenance of consumer interests, it seems to be redundant

III. gratifying new trend of food packaging film

entering the 21st century, with the improvement of people's living standards, people began to pursue the quality of life, in which the requirements for the color, aroma, taste and taste of food are extremely prominent. Therefore, the fierce competition in the food market has led to a very gratifying new trend in high barrier packaging. PVDC coated composite film has undergone qualitative changes in the application direction. In the past, there were few repeat customers in food packaging, and began to use a large number of high barrier packaging materials. Take the sales statistics of Zhejiang Futong plastic packaging Co., Ltd. as an example

from January to August 2001, the sales volume of food packaging film of the company has reached 55.55%. According to the order, by the end of the year, the sales volume of PVDC coated film for food packaging can account for 75% of the total sales volume. The change in the application structure of this product is close to or in line with the quota of developed countries to use the products of this project. At the same time, due to the rapid start and development in the past two years, it also indicates that China's high barrier packaging industry has entered a positive position

in addition, according to our after-sales service and tracking quality, we preliminarily learned that PVDC coated composite film is mainly used for fried food, cakes, biscuits, fresh milk, snack food, dried fruits, etc. However, the packaging widely used in instant noodles and pickled foods in Japan has not yet started

in particular, it should be noted that over the past few years, due to the corporate and social benefits caused by foreign-funded food enterprises adhering to high barrier packaging, domestic food owners have been greatly encouraged to abandon the traditional and outdated business philosophy, improve their scientific and technological quality, and recognize and accept the high-tech product PVDC composite film. For example, in ShaQima, a pastry in Guangdong, foreign-funded products have been packaged with PVDC composite film since they were put on the market, with a market price of 8 yuan per kilogram, while domestic products are packaged with BOPP or pet, with the same appearance and a price of 6 yuan. At the beginning, it sold well because of its low price, but later it was found that the PVDC packaged ShaQima can not only maintain a good taste of crispness, fragrance and crispness for a long time, but also produce no peculiar smell, and each time it was eaten, it felt fresh and would not be greasy. Although the price was higher than 20%, users still chose it. In fact, the cost of PVDC packaging is only 0.15 yuan per kilogram higher than that of BOPP

in view of the increasingly abundant market materials in China, we must consider extending the shelf life of food. Therefore, high barrier PVDC composite film packaging will have rapid development in China's huge and rich market

IV. greater potential of pharmaceutical packaging

with the improvement of people's scientific and technological awareness and the comprehensive evaluation of the environmental protection functions of some products, PVDC coated composite film has developed by leaps and bounds in pharmaceutical packaging in recent years, especially moisture and oxygen resistance, ensuring the shelf life of drugs. In modern pharmaceutical packaging, PTP packaging has rapid development and convenient use. It is reported that in the past three years, the use of PVDC coated composite film in pharmaceutical packaging in the European community has increased by 20% every year, while that in the United States has increased by 25%. Even the German federal government, which has always been cautious about chlorinated plastics, has publicly encouraged the export of drugs to use PVDC packaging. The analysis of Western European medical packaging substrate data in 1996 and 1998 showed that PVDC composite film increased from 12% to 38% within two years. Therefore, Wuyu and BASF have successively expanded the new PVDC latex production line to adapt to its development

from import to self production, PVDC composite film packaging in China's pharmaceutical industry has developed in recent years, but it is still slow: on the one hand, PVC hard films can replace some low-grade packaging; On the other hand, the pursuit of gorgeous aluminized packaging, although the price is not high, but still enjoy it. The price of PVC hard film is 50% - 70% lower than that of PVDC composite hard film, so it is still used. As for the long storage time of drugs, deterioration and oil flow... No one cares. According to the rapid use of high barrier packaging in food packaging film in the past two years, it is believed that pharmaceutical packaging will also have greater development in the application of high barrier materials

v. relevant laws and regulations should keep up with

in order to make the healthy and stable development of high barrier food and drug packaging in China, the corresponding laws and regulations and standards must keep up with them in order to provide social security

1. Health standards and corresponding supervision and testing systems must be introduced as soon as possible. Since the 1970s, the United States and Japan have carried out many tracking and sampling inspections on PVDC packaged food, and a large amount of data have been accumulated on the monomer residue of PVDC film and the amount of monomer in contact with food transferred to food. However, China has not promulgated the health standard of PVDC film (for food packaging), which will leave gaps for fake and inferior goods and directly endanger the high barrier food packaging. Secondly, some imported or domestic PVDC raw materials are declared to comply with FDA standards, and some only declare to comply with their own industry standards. For example, Japan meets the PL specification, and the details will not be disclosed. This not only does not guarantee the health and safety of food packaging, but also lacks data on the impact of coating and processing processes on the environment

2. Food packaging has a direct impact on its shelf life. For food that particularly needs quality assurance, it is best to delineate its packaging materials. At the same time, the consumption claim system for deteriorated and flavored food is also standardized, so as to eliminate the so-called green packaging, environmental protection packaging and so on

3. Due to the special performance of high barrier, the original state issued some modifications or special orders for the residual amount of color printing solvent, such as toluene, which is GB ≤ 100mg/m2. Now the manufacturer can easily turn about 1.5% of plastic products into waste within one year. However, if they are compounded with PVDC after printing, due to the barrier performance of PVDC, the toluene originally on the ordinary film can be volatilized at any time, but after compounding with PVDC, they are blocked in the package, Because toluene has swelling and osmosis, some of it has been transferred to food to produce peculiar smell, so it has been returned in recent years, and disputes have occurred many times. Secondly, due to the swelling effect of toluene, subtle blisters will appear on the printing surface of the base film, resulting in the export return of a factory, but the detection of dissolved residues such as toluene is qualified. There are countless such cases, so we must prepare for a rainy day. (Qu Zhanghong, song Qiangmin, Xu Xiping)

if you have provided dental materials for customers to carry out compression test statement:

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