How does the surface roughness of BOPP color synthetic paper affect the printing effect?

The surface roughness of BOPP color synthetic paper has a significant impact on the printing effect, mainly reflected in the following aspects:

First, ink transfer and attachment

1.Ink transfer uniformity: BOPP color synthetic paper with moderate surface roughness can better achieve uniform transfer of ink. When the surface of the paper is too smooth, the ink may be difficult to form a stable adhesion layer on the surface, resulting in unclear edges or "flying ink" phenomenon. On the contrary, if the surface is too rough, the ink may penetrate into the tiny pores of the paper, resulting in uneven ink transfer and affecting the overall quality of the print.

2.Adhesion fastness: The appropriate surface roughness helps to increase the contact area between the ink and the paper surface, thereby improving the adhesion fastness of the ink. The small concave and convex structure on the rough surface can mechanically "anchor" the ink particles, so that the ink is more firmly attached to the paper, and reduce the problems such as fading and falling off during the use of the print.

Second, printing clarity and layering

1.Clarity: Surface roughness has a direct impact on the clarity of printed matter. Too rough surface will lead to uneven ink distribution, blurring the edge of the printed text, reducing the clarity of the print. The appropriate surface roughness helps to keep the edge of the printed text sharp and improve the overall clarity of the print.

2.Layering: When printing multi-color patterns, surface roughness also affects the layering of the print. Appropriate roughness helps to distinguish clearly between different colors of ink, so that the printed matter presents a richer color level and three-dimensional effect.

Third, printing suitability and equipment wear

1.Printability: The surface roughness of BOPP color synthetic paper will also affect its printability. Paper with moderate surface roughness can better adapt to different types of printing equipment and inks, reduce the failure rate and downtime in the printing process, and improve production efficiency.

2.Equipment wear: too rough surface may cause certain wear to the printing equipment and shorten the service life of the equipment. Therefore, when selecting BOPP color synthetic paper, it is necessary to comprehensively consider the influence of its surface roughness on printing equipment and printing effect.

Fourth, case analysis

Taking the three-layer BOPP film as an example, in order to prevent the adhesion of the film winding, anti-adhesion substances are generally added to the surface layer. These anti-adhesion materials will form bumps on the surface of the film, increasing the surface roughness of the film. The appropriate surface roughness helps to prevent the adhesion caused by the mutual migration of additives on the surface of the two layers of the film during the storage process, and also helps to improve the adhesion fastness of the printing ink and the clarity of the print. However, if the surface roughness is too large, it may lead to problems such as deep ink penetration and blurred edges of printed images.

In summary, the surface roughness of BOPP color synthetic paper has an important influence on the printing effect. In practical applications, the appropriate surface roughness range needs to be selected according to the specific printing needs and equipment conditions to ensure the quality and production efficiency of the printed matter.