Why do thermal paper stickers fade?

The coating of thermal paper adhesive labels contains specific thermal sensitive components, such as no color dyes (such as crystal violet lactone in the triphenylalkylbenzene phthalein system, fluoranthene management system, etc.) and color developing agents (such as para hydroxybenzoic acid and its esters, salicylic acid, etc.).

When these components are heated, they undergo chemical reactions and produce colors.

However, this color reaction is reversible, meaning that colored products will decompose to varying degrees on their own, causing the color of the handwriting to gradually fade.

How

What is thermal paper usually used for printing? Do you need to use carbon ribbon?

Thermal paper is usually printed using a thermal printer and does not require the use of carbon tape.

Thermal printing achieves ink free printing through heated label paper, which is suitable for low demand industries but has a short storage time. Thermal transfer printing uses carbon tape printing, which is durable but costly. Thermal paper is commonly printed on thermal printers without the need for carbon tape; For a more durable effect, heat transfer printing is optional.

Thermal paper and copperplate paper have different characteristics

1. Different storage times
The storage time of copperplate paper labels is slightly longer than that of thermal paper labels, so what kind of label to buy depends on the storage time of the product you are pasting

2. Different temperature effects
Copperplate paper labels are less affected by temperature, but thermal paper labels are more affected by temperature. Therefore, if the labels attached to the surface of the product are greatly affected by temperature, printing factories generally recommend choosing copperplate paper labels

3. Different printing options
Copperplate paper labels need to be printed together with carbon tape, while thermal paper labels do not require carbon tape printing and can be directly installed in barcode printers for printing

4. Differences in Prices
Thermal paper is relatively expensive and can be customized according to customer needs. If there are samples, they can be printed directly based on the samples. The most important thing is that the quotation is not based on how much it costs at the beginning, but on the printing quantity. The more quantity, the more cost-effective the price

How

What is the difference between thermal paper labels and synthetic paper labels?

Thermal paper label: It is a special type of processed paper that is coated with a layer of thermal sensitive coating (thermal color changing layer) on its surface. This coating will undergo a chemical reaction with the color developer under heating conditions, producing color and displaying graphics and text. Thermal paper labels have the characteristics of fast response, high clarity, and bright colors. At the same time, it also has certain durability, waterproofing, and UV resistance, but does not contain harmful substances such as bisphenol A, which has no negative impact on the environment and human health.

Synthetic paper label: It is a type of paper made from chemical raw materials, which has characteristics such as water resistance, tear resistance, durability, and smooth surface. It has good thermal stability, smooth surface, and good printing effect. In addition, synthetic paper labels also have environmental friendliness and wide applicability.

Thermal paper and copperplate paper have different characteristics

1. Different storage times
The storage time of copperplate paper labels is slightly longer than that of thermal paper labels, so what kind of label to buy depends on the storage time of the product you are pasting

2. Different temperature effects
Copperplate paper labels are less affected by temperature, but thermal paper labels are more affected by temperature. Therefore, if the labels attached to the surface of the product are greatly affected by temperature, printing factories generally recommend choosing copperplate paper labels

3. Different printing options
Copperplate paper labels need to be printed together with carbon tape, while thermal paper labels do not require carbon tape printing and can be directly installed in barcode printers for printing

4. Differences in Prices
Thermal paper is relatively expensive and can be customized according to customer needs. If there are samples, they can be printed directly based on the samples. The most important thing is that the quotation is not based on how much it costs at the beginning, but on the printing quantity. The more quantity, the more cost-effective the price