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Plastic Film Papers Can B e Reused for A Hundred Years

University of California, Riverside researchers in the laboratory to produce novel rewrite without ink "paper" in order to form a glass or plastic film as a medium, based on the oxidation of vat dyes, blue, red, and green color, cycling after using up to 20 times, with no significant loss in contrast and resolution. Relevant research results published in the December 2 of "Nature Communications" online edition.

About AD 150, the first by the Chinese invention of paper, has a variety of uses, the most common is for writing and printing. In fact, the development of civilization and the spread is largely due to the use of paper as a writing material. According to the survey, 90% of today's business information is retained on paper, even though a large number of printing paper only once discarded after use. And as the use of traditional paper, waste paper (and ink) will be accompanied by a range of environmental issues, such as forest deforestation, chemicals for air, water and land pollution, if the paper can be "erased" multiple, then this situation can be improved.

According to recent reports, the test leader, professor of chemistry at the university Yin Yadong (phonetic) said: "This dye-forming 'paper' imaging layer, printing is through the use of ultraviolet light bleaching of the dye can be achieved this erasable 'paper'. No additional ink to be economically viable and environment. it represents a meet increasing global demand for sustainable development and environmental protection and an attractive alternative to conventional paper of choice. "

This novel "paper" is a glass or plastic film substantially in the form of rewritable media, printed letters and patterns can be repeated, to retain the number of days, and then erased by simple heating. Its three primary colors: blue, red, green, by using a commercial redox dye methylene blue, neutral red and acid green prepared separately, including dyes titania nanocrystals (such as a catalyst) and a cellulose thickener hydrogen (HEC). Mixing the dye, catalyst and HEC to this "paper" adds high reversibility and repeatability.

In the "paper" writing stage, reducing UV dye to its colorless state. In the erasing phase, a redox dye to restore its original color, i.e., the image forming material by reaction with oxygen in the surrounding environment and restore its original color. Typically it is heated to 115 ℃ can accelerate the reaction, so that the erase process is less than 10 minutes to complete.

The researchers said: "With this 'paper' text printed with high resolution, clearly visible under ambient conditions can be maintained over three days, it has been long enough in practical applications, such as reading the newspaper is even better. its production of simple, low cost, low toxicity, and low power consumption. "

In order to reduce the total cost, the researchers are laboratory to recycle 100 times for goal to increase this "paper" the frequency of use. And how to extend the printed text or image clarity over three days, in order to expand its potential uses, as well as the possibility of taking a multi-color printing.

Plastic Packaging Are Preferred in the Food Industry

With economic development and people's living standards improve, demand for commodities is increasing bags, merchandise bags are more and more demands on the bag use value requirements are also improved. At present, the output value of the rapid growth of the packaging industry, packaging industry reveals the great prospects for development.

China is the world's largest fruit and vegetable production and marketing of a big country, but there are about 30% of the fruit during storage, transportation and sales losses during which important cause improper packaging, competitive market conditions, the role of packaging has become increasingly important. Currently, polyethylene film and polypropylene films are fresh fruits and vegetables the most widely used packaging material

It is understood that plastics play an important role in the national urban infrastructure, high-speed railway construction, plastic consumer market continues to expand. Government focus on technological innovation, light industry restructuring and revitalization plan in the plastics processing industry as a key sector for support. Therefore, the demand for plastic packaging will continue to rise.

Plastic bags market trend remains positive

According to market research firm Cleveland industry report said global demand for plastic bags will be an annual growth rate of 6.2%, to 2018 market demand will reach $ 37.3 billion worth. This value is determined by the growth of consumer and producer of traditional consumer preferences triggered, the market is more biased in favor of conventional plastic packaging, which can be said to be a market of consumer inertia.

In and expand production scale bag rapid expansion of the Chinese market expansion in other developing countries with rising market demand presents complementary trend. The report shows that in 2018, the Asia-Pacific region is expected to be the highest income. Among them, the food packaging (especially beverage packaging) and pharmaceutical packaging will be the two major growth pole.

Bags new developments open up a new round of market trends

Some mature markets have begun to accept higher performance and popular bags, such as the United States, Canada, Western Europe and Japan, they also support the transaction in US dollars converted. In prospect forecast, standing bag will be the most demand growth potential. Although flat bags will continue to occupy the majority of market share, but people tend to start getting this kind of "three-dimensional" packaging, especially in the above mentioned package mature markets.

"Aesthetic taste of consumers, and self-standing value-added packaging, such as stand-in suction packaging, convenience and robustness of the seal, so that consumers consumption preferences." Emily says analyst. At the same time, but also the development trend of lightweight plastic bags, supplies and transportation to reduce light load makes the costs, in line with the interests and demands of producers. Meanwhile, the market, lightweight bag is also environmentally friendly and convenient to bring new consumer trends, are gradually be respected.

Packaging industry trends from simple packaging to innovative packaging converters, with the upgrading of the economy and consumption, bags no longer a simple product. Businesses and consumers for bags of quality, materials, quality and style are increasing. In North America and Western Europe is already high usage of plastic bags, change the product mix will continue to support the continued growth in demand in these regions bags. And as for the waste plastic packaging, GreenMax recycling machine can help a lot.