OPS heat shrinkable film green packaging material five properties

To adapt to the trend of globalization and environmental protection, an internationally leading and domestic first-generation OPS new environmentally-friendly packaging material was recently put into production by the Guangdong Huaye Packaging Materials Co., Ltd. and put into the market. OPS with its concentration and obvious transparency, high shrinkage, stable shrinkage compared with the substituted PVC
Its outstanding environmental performance and economic applicability in the packaging material market is one of the best in the market. It is widely concerned and sought after by related industries and markets including food, beverages, stationery and cosmetics.

As a new type of body-fitting packaging material, OPS has the characteristics of high strength, high rigidity, stable at the beginning, and good gloss and transparency. Easy processing, easy coloring, good printing performance, and high printing resolution, is a material improvement for the constant pursuit of beautifully printed trademarks. Due to this high shrinkage and strength of the OPS film, it can fit closely with a variety of different shapes of the container, so it can not only print exquisite designs, but also can be used in a variety of novel and novel packaging windows. This non-toxic, odorless, oil-resistant, food-compliant film allows designers to use eye-catching colors to achieve a 360° label, giving full play to creativity and imagination, thereby enabling beverages and other products to be labeled The pattern in use is more vivid, highlighting the image on the supermarket shelves and producing an unexpected container effect. The superiority of OPS heat shrinkable film

1. Transparency.

Polystyrene is a linear polymer, which itself is a transparent resin. After being heated and plasticized, the rigidity of the polymer chain segment is increased due to the presence of a benzene ring, and the intermolecular force is increased, so that it is displayed at room temperature. Hard and transparent quality. The optical performance of the OPS is transparent to all wavelengths of visible light, and the refractive index reaches 1.592, making it highly glossy. These two points are the basic requirements for materials in label production. Without a certain degree of rigidity, trademarks do not have a certain degree of rigidity and they cannot adapt to the requirements of the ever-evolving sleeve labeler. Similarly, the film's high transparency and easy-to-color features provide the basis for the production of beautiful logos. A wide variety of labels with different shapes and designs can be designed.

2. High shrinkage.

Due to the use of the flat-film biaxial stretching process, OPS can compensate for the drawbacks of the conventional blown-up shrink film, and its transverse shrinkage can exceed 50%, and can reach as high as 80%. This high shrinkage allows the brand to achieve a tight body on containers of different shapes, highlighting the shape of the window, making the package more vivid and achieving sealing effects.

3. Stable shrinkage performance.

The stable shrinkage properties of OPS shrink films are concentrated in a smoother shrink curve and lower natural shrinkage.

The change of OPS during heat shrinkage is in full compliance with the heating pattern during the trademark use. When the heat temperature reaches 75°C, OPS can complete the shrinkage effect of more than 50%%. This temperature does not have a major impact on the window and the beverages that are filled. The energy consumption of the label will not increase, but it will also decrease slightly. Similarly, the lower natural shrinkage has led to a qualitative leap forward in the popularization of heat-shrinkable films. Since OPS heat shrinkable film has almost no shrinkage at room temperature below 60°C, the natural shrinkage of the film is less than 1 % in 1 meter width. The appearance of this index can make transport, storage and packaging appear during the use of the heat shrinkable film. A series of puzzles and problems where the film's effective period is too short have been solved, providing the label maker with technical guarantees and creating conditions for cost reduction.

4. Environmental protection.

The environmentally-friendly adaptation of OPS heat-shrinkable films is a driving force for its development and an important reason for replacing PVC as a label material. The concept of sustainability and environmental protection puts forward requirements for the development of new products for recycling or conversion into new energy sources. Not only can OPS be recycled, but even printed trademarks can be transformed into energy. Because it is non-toxic and tasteless, it does not produce any harmful gases and therefore does not produce any pollution. On the other hand, PVC cannot be burned because of its chlorine content (the chlorine produced after incineration will damage the ozone layer). Even if it is recycled, the cost of recycling is also relatively large, and the amount of gold used again is too low to be worth the candle.

In the world as early as the late 1990s, the use of PVC as a packaging material was banned. In recent years, PVC packaging materials have gradually faded out in the entire European market. Due to the mature development of OPS in Japan, PVC labels have disappeared. One of the important reasons that these developed countries have banned PVC materials is the rapid development of industrialized waste processing. As a world-class market with a high level of spending power in China, the industrialization of waste disposal has also become a new type of energy industry and it has been supported by the government. With the approaching of the 2008 Beijing Olympic Games and the Shanghai 2010 World Expo, major cities have stepped up efforts to promote various environmental protection plans. With PVC as a packaging material and fulfilling its historical mission, it is just around the corner.

5. Economical and practical.

In addition to advanced technical indicators, OPS heat shrinkable film is also economical and practical. As OPS heat shrink technology equipment is currently only controlled by individual companies in Japan and Europe, as the Chinese companies introduced the technology and equipment in the early stage, the initial investment is very large. In particular, polystyrene K resin, which is currently used as a heat-shrinkable film for OPS, has no domestic technology development and production, and can only rely on imported resins. There is tremendous cost pressure on manufacturing companies, but as the advanced nature of OPS film, it also shows its economical nature. First, the low density of OPS materials. The OPS has a density value of 1.05, which is a one-third area squared advantage over 1.4 for PVC. Secondly, due to the pre-processing of K resin and the re-plastification during the film manufacturing process, the crystal spot of OPS (commonly known as fish-eye) is scarce, resulting in the problem of lowering the yield due to the crystal point in the printing process, and fundamentally change.

In the current PVC trademark production process, scrapping due to crystal point problems has become a common headache for manufacturers and users, and it is also difficult to eliminate the PVC production process. OPS basically solved this problem. Thirdly, the heat shrinkable film produced by the flat film process has a good flatness and can completely change the problem that the conventional PVC heat shrinkable film can only print in a narrow range, and can meet the requirement of wide-width high-speed printing, thereby increasing the efficiency. And it brings down the cost to the makers. The localization of OPS film has broken the monopoly price of Japanese and European companies (Japanese price: RMB 50,000 yuan/ton, European price: RMB 60,000 yuan/ton), but overall it is still higher than the current market price of PVC. high. With the continuous increase in the scale of production capacity, OPS production technology continues to improve and mature, comprehensive tariffs decline year by year, and domestic chemical companies in the OPSK resin breakthrough or birth, then, I believe OPS film will completely replace PVC will become a reality.

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As the only company producing OPS in China, Huaye is a large-scale private enterprise specializing in the production of various packaging and printing materials. It covers an area of ​​40,000 square meters and employs more than 220 people, of which senior and middle-level technical personnel account for 60 %%the above.

The company has invested 168 million yuan in the first phase, introducing advanced technology and control devices from the leading manufacturers of Mitsubishi, Bruckner, Dornier, and Siemens in the world today in paper and film manufacturing. The width of the BOPP film is 8 meters. Biaxial stretching production line, annual production capacity of 28,000 tons, the company's main products are now BOPP film, pearl film, extinction film and synthetic paper and other characteristics of the film, the technical indicators have reached or exceeded international standards.

The second phase of the company's investment project is the printing of BOPS heat-shrinkable film and PS trademark. It will invest about 2.5 billion yuan in the second phase. It will complete the introduction of two BOPS heat shrinkable film production lines by the end of 2005 to reach an annual output of 15,000 tons. The capability (the first line was completed before the end of 2004), and at the same time, a production line with 8,000-10,000 tons of various types of trademarks for production and printing was established. The company will supply customers in South China, Southwest, East China and North China where China's beverage production is relatively concentrated through Huaye Group, the Base Headquarters, and the East China Manufacturing Plant (now Tatsuki Co., Ltd.). By then, Huaye will become China's packaging industry. Another trademark production production leader.