Traditional Culture Encyclopedia - Weather forecast - What causes the dirt on the label surface?
What causes the dirt on the label surface?
What causes the dirt on the label surface? Labels are widely used in our daily life, but in the process of using labels, we will inevitably come into contact with many things, which will lead to dirt on label paper and it is more troublesome to clean it up. So what causes the dirt on the surface of the label?
What causes the dirt on the label surface? 1 1. After printing, the back of the label paper is easy to get dirty. Why is this happening? The reason is that the coated paper on the surface of the self-adhesive label has poor ink absorption. When printing, try to use original ink instead of varnish. Add some anti-sticking agent and anti-sticking agent appropriately. Don't add drying oil in hot weather.
In this way, it is easy to stain the label paper during use. Generally, powder spraying can solve this problem. Although the anti-sticking dust spray for printing contains pure plant materials and has good dispersibility and fluidity, the use of powder spray will directly affect the surface luster of printed matter, dim the color of ink, pollute the environment and have a certain impact on the printing effect of the printer.
2. Pay attention to the ink balance of offset printing and control the water content of printing plate. Under the premise of not polluting the printing plate, the minimum amount of water is used on the printing plate. The label paper is smooth. When printing the whole page on the ground, the color must be printed deeply, the ink must be enough, and the back is not sticky. Overlay the background color thinly, so that the printed product will have better effect.
3. High temperature resistant label paper overcomes the shortcoming that offset printing needs a lot of water and ink. The ink should not be adjusted too thinly. If it is too thin, the back is easy to get dirty. If it is too thin, please add some new ink to improve the viscosity of the ink.
Labels prevent small knowledge from being defiled.
1, the back of the label is very easy to get dirty when it is printed on the spot, because the coated paper on the surface of the label has poor ink absorption ability. When printing, try to use original barrel ink, do not use 6# ink blending oil, add some debonding agents and anti-sticking agents appropriately, and do not need to add drying oil when it is hot. Overprinting is usually very easy to stain the reverse side, so it is usually treated by dusting. Although the anti-fouling spray particles in printing are made of pure natural materials, which have good dispersibility and fluidity, the application of spray particles will affect the surface gloss of printed matter, make the ink dim and pollute the environment, which is also related to the accuracy of printing machine.
2. Pay attention to the balance of ink strokes in screen printing and control the moisture content of printed pages. In the absence of dirty plates, the labels should be smooth and bright. When the printing plate is full, it is necessary to print a dark tone first, and the ink amount should be sufficient, taking the reverse side as the standard, and then print the background color thinner, so that the smoothness of the printed product will be better.
3, to get rid of the shortcomings of screen printing, the ink can not be adjusted too thin, too thin, it is easy to dirty the reverse side, if it is too thin, you can add some new ink to improve the viscosity of the ink.
What causes the dirt on the label surface? 2 To remove stains from labels, you can try the following eight methods:
First, wipe the label twice; Then put soap on a wet and warm towel and wipe the stains many times; Then wipe the soap foam with a clean wet towel, and the traces on the adhesive will be easily removed.
2. Apply glycerin toothpaste with solvent to the surface of the label, evenly apply it, leave it for a while, and then wipe it with a soft cloth. Sometimes the more you post, the stronger it is. Just apply toothpaste to the traces that have not been removed once. The method is still the same. You can remove the headache patch. This is because the solvent can well dissolve the components of the adhesive.
Third, scraping with a pen and paper knife is suitable for hard bottom surfaces such as glass and floor tiles; Wipe with alcohol, suitable for glass, floor tiles, clothes, etc. Freezing, after freezing, the glue becomes hard and can be torn off directly, which is suitable for alcohol, scraping and other methods.
Fourth, the effect of essential balm can also be achieved. If it is adhesive, you can blow it with a hair dryer to remove it well, but it is not suitable for plastic, and overheated plastic will deform;
5. Blow heat with air duct. This is very effective and convenient at home. Basically everyone has an air duct blower. Customers can blow-iron the glass, plastic, wood and metal of the sticker several times, then tear a small edge, and slowly tear it along the direction of tearing while blowing and ironing with the air duct. The effect is very good.
6. For stains that are not very firm on the label, we can wipe them with a rubber;
Seven, industrial use of Tianna water to wipe, very easy to remove.
Eight, scrubbing with gasoline or thinner is also easy to clean, but pay attention to safety.
What causes the dirt on the label surface? 3. Structure of adhesive.
Although the usage of self-adhesive is simple, the structure is not simple. * * * consists of five layers, including:
The first layer, commonly known as raw materials, is used to record or print graphic information;
The second layer, primer, also known as tackifying coating, can make the adhesive combine with the surface material more closely, and also has the function of preventing the penetration of chemical agents. With this coating, chemicals will not penetrate from the third layer below and pollute the label surface. In addition, the color primer can also be used as the background of transparent surface materials;
The third layer, the adhesive of the label, uses silicone resin to separate the surface material from the liner paper before tearing off the surface liner paper of the label and sticking the label to the surface of the object;
The fourth layer, silicon coating, is used to ensure that the label can be easily separated from the backing paper.
The fifth layer, lining paper, protects the label from being contaminated before use, and is usually made of bleached or primary color kraft paper (occasionally clean polyester material). The backing paper also plays a supporting role to ensure that the label will not bend or curl during processing.
Although labels are widely used and popular, they are not suitable for all environments. For example, in frozen food packaging and other high-speed operations, it is more efficient and economical to use heat-sealed labels.
Speaking of which, it is necessary to mention the viscosity of self-adhesive
Why don't you put up the labels at home?
There are different kinds of adhesives used in labels, and there are also specific requirements for use and storage. Some adhesives will react chemically with certain substances.
For example, labels used as signs will pollute some special fabrics under certain conditions; Some labels that need temporary tackiness will produce permanent tackiness under exposure conditions, and some labels that need permanent tackiness will lose tackiness on some surfaces (for example, when labels are used on the surface of recycled paper, the adhesive often loses its function, because when recycled paper is recycled, many different papers are mixed together, some of which will be contaminated by silicon or wax coating, and such mixing treatment will pollute the final recycled products).
The reason why the viscosity of labels stored at home will decrease is probably due to improper storage-large environmental temperature difference, large humidity fluctuation, or improper stacking.
The best solution is to store the label in a dry place to avoid exposure to the sun. In addition, it is best to choose adhesive products with strong viscosity and good material (there are many adhesive strength manufacturers below).
If it has been torn off and is not sticky, it can only be repainted.
There is also a wrong way to use labels, and many people are doing it.
That is, if the label is pulled up from the left or right corner by mistake, it will weaken the adhesion of the adhesive in the contact part, and will also destroy the "surface fiber" in the material and make the label curl.
The correct way to tear is to keep the label as straight as possible and peel off the backing paper from the center of the top or bottom.
In daily life, there is such an annoying problem, which involves the stickiness of self-adhesive
How to get rid of the sticky things left after tearing off the label?
Teach you a super easy-to-use method-use wind oil essence, not a drop or two, and apply it to the part with residual viscose, which will soon fall off.
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