What is the thermal principle of BOPP thermal sensitive synthetic paper?

The thermal sensing principle of BOPP (biaxially oriented polypropylene) thermal sensitive synthetic paper is mainly based on the chemical reaction that occurs on the thermal sensitive coating on its surface when heated. The following is a detailed explanation of the thermal sensing principle of BOPP thermal sensitive synthetic paper:

1、 Composition of thermal sensitive coating

The substrate of BOPP thermal synthetic paper is BOPP film, which has high tensile strength, impact strength, rigidity, toughness, and good transparency, making it an ideal substrate choice. On the surface of BOPP film, a thermosensitive coloring layer is coated, which is a key part of the thermosensitive reaction. It contains chemical substances such as leuco dyes (also known as colorless dyes) and colorants.

2、 Thermal reaction process

At room temperature: Hidden dyes are colorless and do not spontaneously develop color. At the same time, the color developer remains stable and does not react with the latent dye.

Heating state: When BOPP thermosensitive synthetic paper encounters a heated print head or other heat source, the temperature in the local area of the coating rapidly increases. High temperature causes the melting and chemical reaction of latent dyes and color developing agents.

Chromogenic reaction: Under the catalytic action of a chromogenic agent, the structure of a latent dye changes, resulting in the appearance of color. This color reaction is very rapid and suitable for situations that require quick printing and marking.

Color fixation: As the temperature decreases, the color reaction is completed, and the color is fixed on the paper to form the desired image or text.

3、 Characteristics of Thermal Reaction

Rapid color development: BOPP thermal sensitive synthetic paper has a very rapid thermal reaction and can complete the color development process in a short period of time.

Colorful: Due to the special formula and process treatment of the thermal sensitive coating, the color produced by the color reaction is bright and long-lasting.

Environmental friendliness: The production and use of BOPP thermal sensitive synthetic paper pay attention to environmental protection and sustainability. Its materials are recyclable and meet the requirements of modern green packaging and environmental protection concepts.

4、 Application Fields

BOPP thermal sensitive synthetic paper is favored by the market due to its excellent performance and wide application fields. It is commonly used for instant printing of receipts, labels, receipts, restaurant orders, and packaging and decorative materials that require bright and fast printing.

In summary, the thermal principle of BOPP thermal sensitive synthetic paper is based on the chemical reaction that occurs when the thermal sensitive coating on its surface is heated. This type of paper has the characteristics of fast color development, bright colors, and environmental friendliness, and is widely used in various instant printing and packaging decoration fields.