How to improve the printing performance of BOPP synthetic label paper through technological improvements?

To improve the printing performance of BOPP synthetic label paper, technical improvements can be made in the following aspects:

1、 Optimize raw materials and additives

Choose high-quality polypropylene resin:

Selecting polypropylene resin with uniform molecular weight distribution and high purity as raw material to improve the mechanical and optical properties of the film, providing a good foundation for printing.

Add functional additives:

According to printing requirements, add appropriate amounts of functional additives such as anti-static agents, lubricants, and anti adhesive agents to improve the surface properties and printing suitability of the film.

2、 Improve production process

Optimize stretching process:

Accurately controlling the stretching temperature and stretching ratio to achieve the ideal orientation state of the film in both longitudinal and transverse directions, thereby improving the strength and transparency of the film, and facilitating the uniform adhesion and drying of ink.

Strengthen surface treatment:

Using corona treatment or plasma treatment technology to treat the surface of the film, increasing its surface wetting tension and polarity, and improving the adhesion and printing effect of the ink.

Control the uniformity of film thickness:

Strengthen thickness control during the production process to ensure uniform film thickness and avoid issues such as uneven ink coating and poor color transfer during printing.

3、 Select specialized ink and printing equipment

Choose specialized ink suitable for BOPP synthetic label paper:

Specialized ink should have good fluidity and adhesion, and be able to evenly adhere to the surface of the film, forming a clear and full printing effect.

Choose high-precision printing equipment:

Choose high-precision and high-resolution printing equipment to ensure that the print head can accurately control the size and position of ink dots, thereby improving the clarity and detail expression of printed images.

4、 Optimize printing conditions and environment

Reasonably adjust printing pressure:

According to the thickness of the film and the characteristics of the ink, adjust the printing pressure of the printing machine reasonably to ensure that the ink can be evenly transferred to the surface of the film, while avoiding excessive pressure that may cause deformation of the film or ink penetration.

Control printing speed:

On the premise of ensuring printing quality, the printing speed should be appropriately controlled to allow sufficient time for the ink to spread and dry on the surface of the film, avoiding uneven or blurry printing caused by excessive speed.

Adjust drying temperature:

Adjust the drying temperature according to the drying characteristics of the ink to ensure that the ink can quickly dry at an appropriate temperature, avoiding the occurrence of adhesion and blurring.

Maintain a stable printing environment:

Maintain stable humidity and temperature in the printing workshop to avoid excessive humidity causing deformation of the film due to moisture absorption or uneven ink diffusion, as well as high temperature causing rapid ink drying or film deformation.

5、 Strengthen quality inspection and control

Regularly conduct quality inspections on printing equipment and ink:

Ensure stable equipment performance and qualified ink quality to avoid printing defects caused by equipment malfunctions or ink quality issues.

Sample testing before printing:

Timely detect and correct potential printing issues through sample testing to ensure that the printing effect meets customer requirements and quality standards.

In summary, by optimizing raw materials and additives, improving production processes, selecting specialized inks and printing equipment, optimizing printing conditions and environment, and strengthening quality inspection and control, the printing performance of BOPP synthetic label paper can be significantly improved.