What is the difference between the principle of BOPP colored thermal sensitive synthetic paper and ordinary thermal sensitive paper?

The principle of BOPP colored thermal sensitive synthetic paper is similar to that of ordinary thermal sensitive paper in basic principles, but there are significant differences in specific implementation and effects. The following is a detailed comparison of the principles of the two:

1、 Basic principles

Ordinary thermal paper:

Production principle: Apply fine particle powder on a regular paper substrate, composed of colorless dyes such as phenols or other acidic substances, separated by a thin film.

Color development principle: When the thermal paper is placed in an environment above 70 ℃, the thermal coating begins to change color. This is because colorless dyes (hidden dyes) and color developing agents in the coating undergo chemical reactions under heating conditions, resulting in color development.

BOPP color thermosensitive synthetic paper:

Production principle: Using BOPP (biaxially oriented polypropylene film) as the substrate, and coating it with a colored heat sensitive material containing a heat sensitive agent.

Color development principle: When the thermal print head applies heat to the paper, the thermal agent (including hidden dyes and color developing agents) will quickly undergo a chemical reaction, causing color changes and forming colored images or text on the paper.

2、 Differential analysis

Different substrates:

Ordinary thermal paper is usually based on ordinary paper.

BOPP color thermosensitive synthetic paper uses BOPP film as the substrate, which has higher tensile strength, impact strength, rigidity and toughness, as well as good transparency.

The composition and effect of thermal sensitive coatings are different:

The thermal coating of ordinary thermal paper usually only contains colorless dyes and color developing agents, and the color development effect is relatively single.

The thermal sensitive coating of BOPP colored thermal sensitive synthetic paper contains more complex chemicals, such as colored dyes, which can produce rich color images or text.

Different application fields:

Ordinary thermal paper is often used in situations that require quick printing and marking, such as supermarket receipts, express delivery notes, etc.

BOPP color thermosensitive synthetic paper is more suitable for occasions that require real-time printing of color images or text, such as receipts in the retail industry, labels in the logistics industry, and ordering in the catering industry.

Different storage performance:

The color rendering of ordinary thermal paper is unstable and prone to fading, making it difficult to recognize the content of the document and unsuitable for long-term storage.

BOPP color thermosensitive synthetic paper is processed through special process formulas and coating treatments to improve the stability and durability of color reaction, which can extend the storage time to a certain extent.

In summary, BOPP colored thermosensitive synthetic paper is similar in principle to ordinary thermosensitive paper, but there are significant differences in substrate, thermosensitive coating composition and effect, application fields, and preservation performance. These differences have led to the widespread application of BOPP colored thermosensitive synthetic paper in multiple fields, demonstrating unique advantages and value.