How to ensure the color consistency of BOPP colored thermosensitive synthetic paper?

The color consistency of BOPP colored thermosensitive synthetic paper is the key to ensuring printing quality. To ensure color consistency, we can start from the following aspects:

1、 Raw material control

BOPP film selection:

Selecting high-quality BOPP film as the substrate ensures that the transparency, glossiness, and surface smoothness of the film meet the standards, which are the fundamental factors affecting color reproduction.

Thermal sensitive coating formula:

The formula of thermal sensitive coating is crucial for color consistency. It should be ensured that the coating formula is stable, with excellent thermal response performance and color stability.

Ink quality:

Use ink with high purity and good stability to ensure good compatibility between the ink and BOPP film, and to present bright and accurate colors.

2、 Production process control

Coating uniformity:

In the production process, it is necessary to ensure the uniformity of the thermal sensitive coating and avoid color spots and unevenness.

Drying and curing conditions:

The process of coating drying and curing has a significant impact on color reproduction. The temperature and time of drying and curing should be strictly controlled to ensure stable coating performance.

Color separation processing:

During the printing process, when converting image information from RGB mode to CMYK mode for color separation processing, it is important to ensure accurate color separation parameter settings to reduce the loss of color information and ensure the final color reproduction.

3、 Printing process control

Printing equipment:

Adopting high-precision and high stability printing technology and equipment to reduce color deviation during the printing process.

Printing parameters:

According to the characteristics of the paper and printing requirements, set the various parameters of the printing machine reasonably, such as printing speed, printing density, etc., to ensure color consistency.

Standard lighting source:

Use printing standard lighting sources for illumination to avoid color differences in printed materials caused by non-standard lighting sources.

4、 Quality control and testing

Color management system:

Establish a comprehensive color management system, including the development of color standard samples, strict control of color fluctuation range, etc., to ensure the consistency of product colors.

Inspection and Sampling:

Strengthen inspection and sampling efforts, timely discover and handle label products that exceed the reasonable range of color difference.

Using advanced detection equipment:

With the help of advanced detection equipment and technological means, the color of the product is accurately measured and analyzed to ensure color consistency meets customer requirements.

5、 Storage and usage precautions

Storage environment:

BOPP color thermosensitive synthetic paper should be stored in a dry, ventilated, and dust-free environment, avoiding direct sunlight and high temperature and humidity conditions to prevent material performance degradation from affecting printing results.

Usage period:

Pay attention to the shelf life of paper and avoid using expired paper that may cause color changes.

Operating standards:

Pay attention to the operating procedures during use, avoid scratching and contaminating the paper, so as not to affect the appearance quality and color consistency of the printed product.

In summary, by strictly controlling the quality of raw materials, optimizing production processes, setting printing parameters reasonably, strengthening quality control and testing, and paying attention to storage and usage conditions, the color consistency of BOPP color thermal synthetic paper can be effectively ensured.