Matters needing attention when printing in color printing

First, the printing factory must consider its color characteristics, such as light resistance, penetration, lead, etc., in order to avoid economic losses.

1, with the line color plus white deployment of pink, such as 10% -20% red plus 90% -80% white, first pay attention to the red light resistance, because the ink manufacturer specified color characteristics refers to the original ink light resistance, but the user Toning the two different colors reduces the red light resistance.

2, in the printing market, many prints are commonly used in purple, the general unit price of purple ink is low, such as single-sided printing is no need to worry, such as some packaging to be double-sided printing, pay special attention to the purple penetration, because the ordinary purple is infiltration Sex (01 Violet will permeate) Long time after finished product is finished. The purple on the back of the print will penetrate to the other colors printed below. Therefore, the user must consider the permeability of the color when printing on both sides. Printing, to avoid losses, with other colors with 01 purple is also permeable.

Second, before the printing of the purchase of film and printing adhesion.

1, the purchase of film must use electronically processed film, the surface tension of the film must reach 38 dyne (means table printing), it is best to use a corona test pen to test, because the film in the production (means printing film) Electronic treatment, but the film processing effect will exponentially disappear with the storage time, the speed of elimination is related to the stored ambient temperature, raw materials, film thickness, etc., the storage environment temperature is high, the elimination speed is fast, the film contains additives such as lubricating agent, increasing Plasticizers and antistatic agents have disappeared faster than those without additives. Now many printing companies can blow films on their own and perform electronic processing. However, due to the inability to handle the processing procedures, the processing gap (between 1-2mm), The processing voltage (1 - 150,000 volts), etc., makes the phenomenon of decolorization, infiltration, adhesion, and slitting after printing, and it is not easy to open when used, etc. Usually this kind of situation can be analyzed by using a test pen, so purchase Be sure to pay attention to the film or blown film.

2. The adhesion of the print inspections of printing houses is customarily carried out on the machine. That is, one side is printed and tested with an adhesive tape. In fact, this is unscientific because the ink is not yet dry and the adhesion test is best printed. After 8 hours.

Third, during the printing process and after printing, special attention should be paid to the temperature, humidity, etc. of the environment so as not to increase the cost and cause waste.

1. In the printing, the solvent of the ink volatilizes, the moisture in the air penetrates into the ink, and the ink contains a certain amount of alcohol solvent, which has an affinity for water, such as a small plate area, less ink consumption, and a long time. Printing can easily result in gelation of the ink (sticky paste). If it is not completely gelled, new ink can be added to remedy it and use it as soon as possible. After some users are accustomed to printing, leave the ink in the ink tank and leave it for the next day. This will make it easier to absorb moisture, especially red ink. In order not to waste, you should install the used ink and tighten the can. In the middle of the year, the problems of gelation and print dullness are most likely to occur in March-June. During this period, it is best to install dehumidifiers and exhaust fans to improve the printing environment.

2. The printed product is particularly sensitive to the temperature and humidity of the stacking environment. For example, if the printed matter is delivered to the customer, there is no problem in the early packaging, and the anti-sticking phenomenon occurs when it is used later, mainly due to the storage point of the finished product. One is the high temperature, the second is the humidity, and the third is the stacking pressure, which causes the resin in the ink to soften, and the additives in the film penetrate into the ink water to react.

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Duffel Bags are the most common style of Travel Bags. Duffle bags, kit bags or gym bags are large cylindrical bag made of cloth (or other fabric) , historically with a top closure.


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