How is the color of BOPP colored thermosensitive synthetic paper produced?

The color generation of BOPP colored thermal sensitive synthetic paper is mainly based on its special thermal reaction principle. The following is a detailed explanation of the color generation mechanism of BOPP color thermal sensitive synthetic paper:

1、 Principle of thermal reaction

BOPP color thermosensitive synthetic paper is usually made of BOPP (biaxially oriented polypropylene) film as the substrate, with a thermosensitive coloring layer coated on the surface. This chromogenic layer contains chemical substances such as leuco dyes (also known as colorless dyes) and colorants. At room temperature, the latent dye is colorless and does not spontaneously develop color, while the color developer acts as a catalyst and participates in the color reaction together with the latent dye.

2、 Color generation process

Heat reaction:

When BOPP color 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.

Structural changes:

Under the catalytic action of the chromogenic agent, the structure of the latent dye changes, resulting in the appearance of color.

Color rendering completed:

As the temperature decreases, the color reaction is completed and the color is fixed on the paper, forming the desired image or text.

3、 Color characteristics

Quick color rendering:

The thermal reaction of BOPP colored thermal sensitive synthetic paper is very rapid, suitable for occasions that require fast printing and marking.

Vibrant colors:

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

Widely used:

BOPP color thermosensitive 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.

4、 Save environment

Due to the reversible color reaction of thermosensitive materials, BOPP colored thermosensitive synthetic paper should avoid prolonged exposure to sunlight or high temperature environments during storage to prevent color fading. At the same time, in order to maintain the durability of colors, it is recommended to store the printed paper in a dry, ventilated, dust-free environment and avoid direct contact with chemicals.

In summary, the color of BOPP colored thermosensitive synthetic paper is generated through its special thermosensitive reaction principle, which has the characteristics of rapid color development and bright colors. During use, it is important to pay attention to preserving the environment to extend the durability of colors.