Colored easy open end printing and coating process

Abstract

The invention discloses a colored easy open end printing and coating process. The process comprises the following steps that a base material is provided, and the base material is sheared to obtain a base material sheet; patterns are printed on the front surface and / or the back surface of the base material sheet; the front surface of the base material sheet is coated with a base coating layer containing colors; a transparent surface coating layer is coated on the base coating layer; the back surface of the base material sheet is coated with a color-containing base coating layer; a transparent surface coating layer on the base coating layer; and the base material sheet is stamped to form a base end. According to the printing and coating process, after the color-containing base coating layeris coated on the surface of the easy open end base material sheet, the transparent surface coating layer is coated on the base coating layer, the surface coating layer provides a protective film for the base coating layer, the stretch resistance and the adhesiveness of the base coating layer are enhanced, the patterns on the surface of the easy open end and the structural stability of the base coating layer are protected, the defects of paint falling, pattern scraping and the like of the patterns and the colored coating layer on the surface of the easy open end are reduced, the corrosion resistance and the scraping resistance of the easy open end are enhanced, and the quality requirement of the colored easy open end is met.

Description

technical field [0001] The invention relates to the technical field of easy-open ends, in particular to a printing and coating process for colored easy-open ends. Background technique [0002] Easy-open lid, also known as easy-open lid, is used to seal cans with a pull ring. It belongs to metal packaging products. It is mostly made of aluminum or tinplate and has various sizes. It is suitable for iron cans, aluminum cans, composite cans, PET plastic cans and paper cans, etc. [0003] With the rapid development of society, the aesthetics of consumers is also constantly improving, and the requirements for product appearance design are also getting higher and higher. In the field of easy-open lids, in order to meet market demand and enhance the market value of products, manufacturers need to produce colorful easy-open lids, and need to print patterns on the front and / or back of the easy-open lids, such as printed text Or the trademark of the product, so as to enhance the aest...

AI Technical Summary

Problems solved by technology

[0004] The existing color paint used in the easy-open end can only be prepared by blending transparent color resin and color paste, which is equivalent to the transparent paint in essence. After the easy-open end is colored by the coating process, the easy-open end needs to Continue to process and stamp the basic cover on the mold. Because the color coating contains toner, the stretch resistance and adhesion of the color coating are greatly reduced, so that the easy-open cover is affected by force and impact during stamping. The color paint on the paint will fall or fall off, which will affect the surface gloss of the base cover and lead to an increase in the defective rate of the product; when the easy-open cover coated with color paint collides with a hard tip The color paint on the surface is also easy to fall off due to scratches, that is, the paint on the easy-open end will fall off, which greatly affects the appearance of the easy-open end

In addition, during the processing and subsequent use of easy-open lids and cans, the printed patterns on the surface of the easy-open lids will inevitably come into contact with the liquid substances in the cans. The pattern is corroded by liquid substances, resulting in incomplete patterns after the easy-open end is opened, affecting the appearance and user experience of the easy-open end