Do different colors of BOPP color thermal synthetic paper differ in composition?

Different colors of BOPP color thermal synthetic paper may indeed differ in composition, but this difference is mainly reflected in the dye or pigment used in the thermal coating and color printing layer, while the substrate BOPP film itself is usually consistent.

Thermal coatings and color development agents

The production principle of BOPP color thermal synthetic paper is similar to that of ordinary thermal paper, which is coated with a layer of thermal coating on the substrate. The thermal coating contains colorless dyes (or leuco dyes) and color developing agents. When stimulated by heat, colorless dyes react chemically with color developing agents to produce color. Different colors of BOPP color thermal synthetic paper may use different combinations of colorless dyes or color developing agents in the thermal coating to achieve a specific color effect.

Color printing layer

In addition to the thermal coating, BOPP color thermal synthetic paper may also contain a color printing layer. This color printing layer is added to the substrate through the traditional printing process to provide a richer visual effect in addition to thermal printing. Different colors of BOPP color thermal synthetic paper will vary significantly in the dye or pigment used in the color printing layer to achieve different colors and design requirements.

Consistency of the substrate

Despite the differences in color, the base material of all BOPP color thermosensitive synthetic papers is biaxially drawn polypropylene (BOPP) film. This film has good physical properties and chemical stability, and is an ideal substrate for making heat-sensitive synthetic paper.

conclusion

To sum up, the difference in composition of different colors of BOPP color thermal synthetic paper is mainly reflected in the dye or pigment used in the thermal coating and color printing layer, and the substrate BOPP film itself is usually consistent. This difference allows BOPP color thermal synthetic paper to present a rich variety of colors and design effects to meet the needs of different application scenarios.

It should be noted that because the process formula and raw material selection of different manufacturers may be different, even the same color BOPP color thermal synthetic paper may have subtle differences in composition. When selecting materials, you are advised to make comprehensive consideration based on specific requirements and scenarios.