Plug in technical paper

A spy who steals secrets finds that there is confidential information in the bottle that he wants. He can't wait to extract the cork and take out a note to see what happened. Suddenly the note changes, first from the blue. Slowly darkened, and then the whole sheet of paper actually burned up. The spy immediately took out the note and threw it away. The note sparkled with fire, and he turned to a pile of cigarette smoke.

This is a lens in many movie blockbusters. With the development of science and technology, this kind of paper that can be automatically burned appears around us. Not only that, but more high-tech integration has given the paper more functions, and it will “talk”. "There is a "brain," not afraid of water. In fact, as long as the paper is inserted into the wings of science and technology, the invention of specialty paper will exceed people's imagination.

Color inkjet paper
Color inkjet printing paper is a supporting material for the information industry. The quality of images printed with it is comparable to that of color photographs, and it is widely welcomed by people. With the popularity of computers and printers, the market demand will increase.

The development technology of color ink-jet printing paper is difficult. Although it is manufactured by traditional paper-making and coating processing methods, the base paper, coating pigments, adhesives, and auxiliary chemical aids are all special special products, which are different from conventional paper-making raw materials. Materials still need to be self-synthesized and prepared. Its manufacturing process involves papermaking, printing, computer, chemical and other technical fields, and is a product of cross-cutting applications of edge science. Color ink-jet printing paper is a kind of coating product. The discharge of pollutants in the production process is very small. It is a high value-added paper that is environmentally friendly and worthy of development.

At present, China's color ink-jet printing paper is mainly imported from Japan. Its price is relatively high. After domestically produced color ink-jet printing paper is industrialized, it will produce good social and economic benefits.

Carbonless paper
In 1945, the National Cash Register Co., Ltd. of the United States developed NCR paper. This paper is not obviously different from plain paper in appearance, but it can be used for copying and produces the same effect as blue carbon paper. Stain your fingers. Because it does not use carbon materials, it is called carbonless paper, or carbonless paper for short. The technical principle is that the chemical paint containing the coloring agent and the developer is evenly coated on the CB surface and the CF surface of the carbonless copy paper. Under a certain pressure, the microcapsules on the CB surface break and the coloring solvent overflows. A chemical reaction with the developer on the CF surface gives a clear image and text.

Why should carbonless paper be classified as specialty paper?

First of all, the structure of paper is special. Carbonless copy paper is generally divided into upper, middle, and lower pages, and each page has three different layers of structure. This is not what ordinary paper used to have.

Second, the added chemicals are special. For example, carbonless copy paper requires the preparation of microcapsules, the use of leuco dyes, color reagents, etc., whereas plain paper requires only the addition of general chemicals (eg, rosin gum, modified starch).

Again, special processing techniques. The application of carbonless copy paper varies according to different levels and requires multiple coating operations, and the processing difficulty is high. Ordinary paper sometimes does not need to be processed separately.

Finally, the application area is special. Carbonless paper is mostly used in financial and financial, aerospace, electronic communications, defense and military departments. Carbonless copy paper is a new generation product of today's ink copy paper, which is easy to use, anti-virtual, non-polluting, etc. It is an ideal carbon paper for enterprises and institutions to open financial invoices and sign contracts. It has broad prospects and good economic benefits. The output of carbonless copy paper in China has been growing rapidly, reaching 50,000 tons in 1998 and 135,000 tons in 2002. By 2005, the output will be estimated at about 250,000 tons.

Sounding paper

Japan’s Olympus Optical Industries Co., Ltd. has developed a sound-generating paper that can be heard using a special scanning pen to read fine-grained barcodes printed on paper. The company cooperated with publishing houses and published sounding books. The sound was recorded with a 8.4-mm-thick bar code, and the reader could hear the sound from the headphones.