The materials of the finished paper box are rich and varied, and the common ones are cardboard, corrugated paper, etc. There are differences in the adaptability of different materials to reprinting.
The texture of cardboard is relatively tight and smooth, and the surface coating is also relatively uniform, which makes it have the basic conditions for reprinting to a certain extent. However, if there are special coatings on the surface of the original paper box, such as varnish, lamination, etc., these coatings will affect the adhesion of ink. Although the varnish coating can improve the gloss and wear resistance of the paper box, the surface is too smooth, and it is difficult for the ink to penetrate and adhere firmly. The lamination is divided into bright film and matte film. The surface of the bright film is smooth. Although the matte film has a certain degree of roughness, it is still not conducive to ink adsorption compared with direct contact with paper.
The structure of corrugated paper is special. It is composed of multiple layers of paper. The wavy corrugated layer in the middle gives it good buffering properties, but it also causes its surface flatness to be poor. In addition, corrugated paper has strong water absorption. The intervention of water during the printing process may cause the paper to deform and affect the printing quality. If the original corrugated paper box has a printed pattern or treatment on the surface, the reprinting should consider the compatibility of the new ink with the original printed content and avoid damaging the paper box structure.
Digital printing is an ideal choice for the reprinting needs of small batches and personalized finished paper boxes. It does not require plate making and can directly transfer digital files to the printing equipment for rapid printing. Digital printing is highly flexible and can be adjusted according to the shape, size and content requirements of the paper box. For example, when customizing a small number of promotional paper boxes, digital printing can be used to add promotional information, new patterns, etc. to the original paper box. The ink or toner used in digital printing is different from traditional printing and has a stronger adaptability to the surface of the paper box. Some digital printing inks can achieve better adhesion on smooth or irregular surfaces through special curing methods.
If the printing accuracy requirements are relatively low and the surface of the paper box is relatively flat, screen printing can also be used for reprinting of finished paper boxes. Screen printing can print a thicker ink layer, but the screen printing speed is slow and is not suitable for large-scale mass production.
When the finished paper box has an irregular shape, has a curved surface or needs to be printed locally, pad printing technology can play an advantage. Pad printing transfers ink from the printing plate to the surface of the paper box through a silicone head, which can adapt to various complex shapes. However, pad printing has a limited printing area each time. If the paper box needs to be reprinted on a large area, the efficiency is low.
In summary, the finished paper box can be reprinted under certain conditions. However, it is necessary to comprehensively consider the material of the paper box, select the appropriate printing technology, and combine it with the actual application scenario to achieve a satisfactory reprinting effect and meet the diverse market needs.
