Special Printing with Added Value (3)

Third, high value-added functional printing

Companies should be aware that in the industrial production process, with the same labor time, the same amount of raw materials, to carry out value-added production activities, has become fashionable. Here you can introduce two kinds of value-added printing products for reference.

1. Antibacterial decorative paper

If the hospital's doctor's wallpaper is antibacterial, it will not need to be sprayed with disinfectant. This will not only keep the clinic clean, but also save trouble.

The method is that, when gravure printing or flexographic printing is used to print wallpaper, adding a certain amount of photocatalyst to the ink can not only be antibacterial, but also can deodorize. The photocatalyst used is titanium dioxide (TiO2). This type of printed product has added antibacterial functions in addition to the printed wallpaper. This means that the same amount of printed material is printed at the same time and added value is added. That is, there is one more layer and 40% more can be obtained. 50% of the wages. In the commodity market, if the labeling of the wallpaper has an antibacterial effect, the selling price can also be increased.

2. Non-slip floor leather

Floor leathers that are usually purchased from the market are occasionally dripping with water and are very slippery and inconvenient. If the corresponding photocatalyst is incorporated into the ink of the printed floor leather, the printed floor leather can increase the roughness and avoid slippage. As in the previous example, the anti-slip function was added when the same amount of printing was printed on the same time, and unexpected added value was obtained. With regard to the above-mentioned two kinds of printed matters, the printing factory can completely design its own designs, print it out in batches, and put the trademark on the market. If it is inconvenient to operate, it can also cooperate with building materials factories to make products on the market and establish a corporate image.

Photocatalysts are mentioned here, as explained briefly. Photocatalysts absorb light and transfer its energy to other molecules, causing chemical reactions. A typical example of this is titanium dioxide. This is a kind of semiconductor. When light is projected onto the surface, it absorbs the light in the near-ultraviolet region and the electrons are excited by the conduction band, which causes the charge of the hole and the electron to separate. At this surface, an oxidation-reduction reaction occurs due to the acceptance of electrons. In particular, the cavitation of holes is strong. When ultraviolet rays are projected onto titania, OH radicals are generated from water molecules on the surface, which can decompose various organic substances. In view of this, titanium dioxide can be made into a powder, granular or film-like form for purification of air (removal of substances that pollute the environment), water purification, sterilization, antibacterial, deodorization, deodorization, and prevention of wall surface contamination. Therefore, as long as the photocatalyst is incorporated into the ink or paint, it can play an antibacterial role.

Fourth, the common several kinds of special printing applications

1. The magical effect of electrostatic printing

The principles and methods of electrostatic printing have already been discussed in detail on other occasions, and no more. The field of electrostatic printing is the field of electrophotography and photocopying. There are two special uses. Simply put, first, the use in the field, because the electrostatic printing is not afraid of vibration, can make use of two trucks to form a field printing shop, one carrying printing materials, one carrying electrostatic printing The machine will print the combat map into the fighting force before it is about to put into combat. This is to complete the printing on the march. In the event that a unit encounters a threat, it can be kept confidential by simply lighting the original image film. >> U.S. IT research says good news for color electrostatic printing market

The other is printed in water. In the past, it was always said that except for water and air, any object could be printed. Now it is possible to use static electricity to make the printed material and the printed water or solution obtain positive and negative charges in advance, and then apply it on the liquid surface according to the design scheme. Get the Italian pattern. The example that has been seen is to print the word "welcome" on the milk soup with chocolate liquor. It can be kept for 30 minutes as long as it is not stirred. This is the embodiment of printing that has been done on water.

However, what I want to focus on here is the electrostatic flocking that is common in my life. This is the use of static electricity in the fabric or paper flocking to obtain a three-dimensional pattern of products. The work process is relatively simple. First, print the pattern on the substrate with glue and apply a negative charge. Spread 0.5 mm short fiber made of rayon, nylon, wool or gold-silver powder on the positively charged electrode plate or Dust, due to the short distance between the positive and negative electrodes, the positively-charged staple fiber is immediately attracted to the applied paste pattern by the opposite charge. After fixing, remove the non-patterned part with Fine fibers, complete flocking. With this method, flocking can be performed on nylon, plastic products, leather, wood products or ceramic ware. The printing factory can fully use its brains in this regard, designing a variety of designs, and printing out novel and decent products to decentralize the market.

2. Easy to use liquid crystal printing

First understand the LCD is how is it? Liquid crystals are substances that have both the property of liquid flow and have the same optical properties as crystals. Commonly used is a cholesteric liquid crystal. The appearance of this liquid crystal is opaque liquid. Out of the black, with the temperature and color change, you can change 7 colors. Before printing, capsules must be encapsulated with gelatin and used. The amount of liquid crystal incorporated in the ink is 40% of the total ink, and the ink film thickness is about 30 micrometers to 60 micrometers. Printed products vary according to needs, with reversible reactions and irreversible reactions. >> Newbie: Special Printing LCD Printing

The printing method may be screen printing or gravure printing. The printing material is preferably absorbent paper, and synthetic paper is also suitable. The life of the liquid crystal is generally about 6 months to 1 year, except for the precision components used in the appliance and the watch. The subject of future research is to extend its life span.

Currently widely used in printed display panels, toys, trademarks, simple body temperature zone. Printing a simple body temperature tape requires printing with an irreversible ink. U.S. hospitals pay 30 cents for rubbing alcohol with a thermometer, but only 5 cents for tearing a piece of liquid crystal tape, and the body temperature tape is put into the mouth and removed in only 5 seconds, according to the color change on the tape. It can be judged whether the body temperature is high or low, which is fast and convenient.

3. Perspective analysis of printed advertising effectiveness

At first glance, this printing name is unfamiliar. In the existing printed books and magazines, this kind of printing method and prints printed with it are seldom introduced, but as soon as they see its print is very flattering, especially its advertising effect is strong. . (to be continued)