How to control the amount of ink used in the printing process of BOPP color synthetic paper?

In the printing process of BOPP color synthetic paper, controlling the amount of ink is the key to ensuring printing quality and cost-effectiveness. Here are some effective methods for controlling ink usage:

1、 Understand the basic factors of ink usage

Printing area:

The spot color area of printed materials is directly proportional to the amount of ink. The larger the spot color area, the more ink is used.

Ink thickness:

The thickness of ink directly affects the amount of ink used in printed materials. The thicker the spot color ink, the more ink is used. However, it should be noted that excessive ink thickness may cause other printing problems.

Ink density:

Ink density refers to the weight of ink per cubic centimeter. When calculating ink usage, it is necessary to convert the volume usage into weight using ink density.

Printing quantity:

The quantity of printed materials is directly related to the amount of ink used. The more printing quantity, the corresponding increase in ink usage.

2、 Specific methods for controlling ink usage

Optimize printing process parameters:

According to the actual needs of printed materials and the characteristics of BOPP color synthetic paper, adjust the process parameters of the printing machine, such as printing speed, printing pressure, etc., to optimize the transfer efficiency and distribution uniformity of ink.

Using a precise ink metering system:

Introduce advanced ink metering systems, such as the reticulated roller ink supply system, to achieve precise control of ink usage by accurately controlling the number of mesh lines and ink supply of the reticulated roller.

Regularly check and adjust ink viscosity:

The viscosity of ink is an important factor affecting ink transfer efficiency and printing quality. It is necessary to regularly use a viscometer to measure the viscosity of the ink and make appropriate adjustments based on the test results to ensure the fluidity and printing effect of the ink.

Reasonable selection of ink type and brand:

Select the appropriate ink type and brand based on the printing requirements and the characteristics of BOPP color synthetic paper. High quality ink usually has better printing effects and lower ink loss rates.

Strengthen ink management:

Establish a comprehensive ink management system, including the procurement, storage, use, and recycling of ink. Ensure stable ink quality and avoid ink waste and pollution.

Using printing auxiliary equipment:

If a scraper ink supply system is used instead of the traditional rubber roller ink supply system, it can reduce ink waste and improve printing efficiency. Meanwhile, by utilizing printing auxiliary equipment such as ink circulation systems, the fluidity and stability of ink can be maintained, further reducing ink loss.

3、 Precautions

Avoid excessive dilution of ink:

Excessive dilution of ink can reduce its viscosity and coloring power, thereby affecting the printing effect. Therefore, when diluting ink, it is necessary to strictly control the amount and dilution ratio of the diluent.

Regularly clean the printing machine:

Regularly clean the drum, scraper, mesh roller and other components of the printing machine to avoid ink residue and blockage, which can lead to ink waste and decreased printing quality.

Training operators:

Provide professional ink usage control training to operators to improve their operational skills and quality awareness, ensuring the accuracy and stability of ink usage during the printing process.

In summary, controlling the ink usage in the printing process of BOPP color synthetic paper requires multiple aspects, including optimizing printing process parameters, using precise ink metering systems, regularly detecting and adjusting ink viscosity, selecting ink types and brands reasonably, strengthening ink management, and utilizing printing auxiliary equipment. By implementing these measures, ink usage can be significantly reduced, printing quality and cost-effectiveness can be improved.