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Is the UV color changing label reversible?

There are two situations regarding whether the color change of ultraviolet color changing labels is reversible:

Irreversible color change: Many UV color changing labels use coating materials with irreversible color changes.. After this material undergoes a color change under ultraviolet irradiation, even if the ultraviolet disappears, the color cannot be restored to its original state. This type of label is typically used in scenarios that require one-time confirmation of UV exposure, such as UV labels for UV management

Reversible discoloration: Although irreversible discoloration is more common, some UV color changing labels also use reversible discoloration materials. These materials undergo color changes under UV irradiation, and when the UV disappears, the color can be restored. This reversible change is usually based on the principle of photochromism, but it should be noted that not all ultraviolet color changing labels have this characteristic

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.

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Can PET stickers be used as beer labels?

PET stickers can be used as beer labels.

PET adhesive has good hardness and brittleness, can withstand certain high temperatures, resist harsh environments, and resist corrosion from chemicals such as acid and alkali. At the same time, it also has characteristics such as waterproofing, oil resistance, resistance to tearing, and high temperature resistance, which make it particularly suitable for use as a beer label. This is because beer requires label materials that are waterproof, moisture-proof, and resistant to low temperatures during storage and transportation, and have strong adaptability and are not easily detached. In addition, PET adhesive label paper also has good natural biodegradability, which can meet environmental protection requirements, which is particularly important in the context of increasing environmental awareness. In addition, its excellent printing performance also makes it suitable for various printing equipment and can produce various exquisite labels.

Therefore, PET adhesive is a very suitable material for use as beer labels.

We offer comprehensive technical support, including free professional labeling solutions, advice on label materials and adhesive selection, as well as online/offline assistance from professional software and hardware engineers. Service email: andy@ownlikes.cn. In pre-sales, we leverage our extensive experience in specialty labeling projects to provide clients with the most suitable hardware solutions. Additionally, all our label barcode printers and scanners come with a three-year free warranty, demonstrating our confidence in our products.