Which production processes will affect the color of color label paper?

The production process that affects the color brightness of colored copper plate label paper mainly includes the following aspects:

1. Paper performance

Surface smoothness: Paper surface smoothness has an important impact on color reproduction. The paper with high smoothness can better contact with the ink, so that the ink is evenly spread, which is conducive to the accurate reproduction of color. On the contrary, paper with a rough surface requires greater printing pressure, and is easy to cause uneven ink transfer, affecting the color brightness.

Absorbency: The absorbency of the paper also affects the brightness of the color. Highly absorbent paper will absorb more ink linking materials, even pigment particles, resulting in reduced imprinting saturation, color is not bright. The paper with small absorption can make most of the ink film appear on the surface of the paper and improve the color saturation.

2. Ink performance and allocation

Ink quality: The quality of ink directly affects the color brightness of printed matter. High quality ink color pure, stable, can better reproduce the original color.

Ink allocation: In the printing process, through the precise allocation of ink color and concentration, you can ensure that the printed color is consistent with the design draft, to achieve a bright and full effect.

3. Printing process

Printing pressure: Moderate printing pressure is one of the important conditions to achieve imprinting transfer. The ideal printing process is on the basis of "three flat" (that is, the printing plate and the inking roller and the lining body are relatively flat), in order to balance the printing pressure, so that the printing on the uniform ink color and bright color.

Dot reproduction: Dot reproduction quality has a very important impact on color reproduction. Accurate reproduction of the dot can ensure the color reproduction of the original manuscript, the smaller the degree of dot expansion, the more bright the color.

Ink transfer and rolling: In the process of ink transfer and rolling, attention should be paid to avoid excessive ink emulsification and improper color complement, which will affect the color brightness of the print.

4. Equipment and operation

Printing equipment: The use of high-quality printing equipment and professional plate making technology can ensure that the color level is clear and the details are excellent, so as to enhance the color brightness of the print.

Operating specifications: In the printing process, the operator needs to strictly abide by the operating specifications to ensure that the printing environment, equipment status, etc., meet the requirements to avoid color deviation due to improper operation.

5. Post-processing

Drying and curing: After printing is completed, proper drying and curing treatment can ensure that the ink is stably attached to the paper and avoid color changes caused by the ink not drying out.

Coating protection: The coating protection treatment of the printed color label can increase the water resistance and wear resistance of the label, extend the service life, and also help to maintain the brightness of the color.

In summary, the production process that affects the color brightness of colored copper plate label paper involves many aspects, including paper performance, ink performance and deployment, printing process, equipment and operation, and post-processing. In actual production, it is necessary to consider these factors comprehensively and take appropriate measures to ensure the color brightness and quality stability of printed matter.