Thermal adhesive printing paper features

Thermal paper is a special coated paper that looks similar to ordinary white paper. The surface layer of thermal paper is smooth, it is made of ordinary paper as a paper base, and the layer of thermal color development layer is coated on it. On one side of the paper surface, the developing layer is separated by an adhesive, a color developer, a colorless dye (or colorless dye), and not by a microcapsule. The chemical reaction is rapid - finalized 2.jpg in the "latent" state. When the thermal paper encounters when the printhead is hot, the developer and the printhead will chemically react and discolor the place where the colorless dye forms the pattern.

Xin Wei three thermal sensitive paper professional production label paper for 15 years, the use of high-quality three thermal sensitive raw materials, printing and storage time is relatively long suitable for cross-border e-commerce logistics stickers, products with waterproof, oil and alcohol prevention function! The factory in Cixi has nearly 10,000 square meters of production plant can accept customers a variety of labels customized self-adhesive printing

When the thermal paper is placed in an environment above 70 ° C, the thermal coating begins to change color. The reason why its discoloration also starts from its composition.

There are two main types of coating heat sensitive elements in thermal paper: one is colorless dye or colorless dye; The other is the developer. This type of thermal paper is also known as two-component chemical thermal recording paper.

When the thermal paper is heated, it reacts with the colorless dye of the developer to produce the color, so when the thermal paper is used to receive signals on a fax machine, or to print directly with a thermal printer, graphics and text are displayed. Since there are many colorless dye varieties used, the colors of handwriting appear to be different, including blue, fuchsia, black and so on

Quality selection of thermal paper:

Many customers do not know the basic principles and thermal printing paper quality evaluation is very good, but we still want to take this opportunity to understand this problem. For this problem, let us do a detailed introduction: The basic principle of thermal printing paper is usually divided into a plurality of layers, the bottom layer is the paper substrate, the third layer is the thermal coating, and the third layer is the thickness of the protective layer, the key quality is the thickness of the thermal coating or protective layer. If the coating of thermal printing paper is not uniform, it will cause deep and light tones in some areas, and the printing quality will decline sharply. If the organic chemical formulation of the thermal coating is not scientific, it will cause the copy paper to become shorter and shorter storage time, and good copy paper can be copied after being stored for 5 years (at normal temperatures and standards to protect against sun exposure), and now more effective thermal paper can be stored for 10 years, but if the thermal coating is not scientific secret, it will only be kept for a few months.

1. Appearance: If the paper type is very white, it means that the maintenance and thermal coating of the paper type is unscientific, and too much luminous powder is added. The smoothness of the paper type is too low or looks uneven, indicating that the coating of the paper type is uneven, if the paper type looks very refracted light, add too much phosphor, the quality is not good.

2. Fire: The method of burning with fire is also very simple. Use a lighter to heat the reverse side of the paper type. If the color is dark brown after heating, it means that the heat sensitive secret recipe is not very effective. This is relatively short. If the black part of the paper pattern has a bump pattern or pattern, it means that the coating is uneven. Good quality paper should be heated after black and green (with a little green), the graphics are symmetrical, and the tone is gradually lighter from the center of management to the surrounding.

3. By comparing the determined light: Wipe the shape of the copy paper with a highlighter and expose it to sunlight (this accelerates the reflection of light on the heat-sensitive coating), the paper will darken faster, which indicates less storage time.