A direct plate-making method and application of a printing plate and plate roller integrated flexographic plate and 3D rapid prototyping printing

Abstract

The invention provides a direct plate-making method of 3D rapid prototyping printing of a flexible plate integrated with a printing plate and a plate roller. The steps are as follows: using 3D printing to make a plate, first use three-dimensional software to design a pre-printed plate, and then select the printing material , use a 3D printer to print out the printed material and the graphics on the printed page, and then get a flexographic plate with an integrated printing plate and plate roller. The method of the present invention designs the printing plate and graphics into a cylindrical shape directly in the 3D design drawing, saves installation steps, does not require labor and labor, improves operability and safety, does not cause bending deformation caused by installation, and improves accuracy. At the same time, this method saves the compensation step of the pre-press deformation, wraps the antenna graphic on the printing plate, integrates the graphic and printing plate, and the printing plate and the cylinder. The content of the graphic and text is fixed, and the accuracy of graphic and text duplication is improved. The method of the present invention will create a new chapter in the flexographic plate making technology of the integration of the printing plate and the plate roller, and fill the domestic blank.

Description

technical field [0001] The invention belongs to the technical field of printing, and relates to a method for making a flexible printing plate, in particular to a direct plate-making method and application of a flexible plate integrated with a printing plate and a plate roller and 3D rapid prototyping printing. Background technique [0002] There has always been a deviation problem in the printed graphics and texts in the flexographic printing process, and the deformation of different printing plates requires pre-press pre-compensation. Due to its own characteristics, the flexographic printing plate has a certain influence on the printing quality: 1. The flexographic printing plate is mainly a letterpress made of photosensitive resin plate, rubber plate and other materials, which endows it with the characteristics of large elasticity and thick plate. Compensate for the deformation of the printed image by reducing the size of the graphic on the negative film of the printing pl...

AI Technical Summary

Problems solved by technology

Due to its own characteristics, the flexographic printing plate has a certain influence on the printing quality: 1. The flexographic printing plate is mainly a letterpress made of photosensitive resin plate, rubber plate and other materials, which endows it with the characteristics of large elasticity and thick plate. Compensate for the deformation of the printed image by reducing the size of the graphic on the negative film of the printing plate; 2. Even if it is a perfectly made flexographic printing plate, after it is installed on a cylindrical cylinder, under the action of printing pressure, The size of the graphic in the circumferential direction on the printing plate will be elongated, and the axial size of the graphic will inevitably deviate (as the printing plate is wrapped on the cylinder by the plane, the radial dimension of the concave surface of the printing plate becomes smaller, and the radial dimension of the convex surface becomes smaller. 3. The deformation of the printing plate varies with the thickness of the printing plate and with the radius of the cylinder of the printing machine. In flexographic printing, the deformation rate is calculated using The empirical formula also depends on the technical level of the operator, and the accuracy is limited

[0003] The domestic flexo printing industry is still dominated by organic solvent plate making, among which the mixed solvents tetrachlorethylene and n-butane are still commonly used are highly toxic, which is not conducive to environmental protection and sustainable development

[0004] The seamless sleeve technology, which symbolizes one of the most high-end technologies in the field of flexographic printing, often adopts the method of solvent plate making, which has low plate making efficiency and seriously affects the entire production process

Flexo printing equipment often needs to replace printing plates, which is not only time-consuming and labor-intensive, but also poor in operability and safety

[0005] In terms of antenna printing, traditional antenna printing methods such as etching and winding methods are high in cost and complicated in process, making it difficult to apply on a large scale, and it is a subtractive manufacturing method with high energy consumption and high emissions.

Even for screen printing and gravure printing in the direct printing method, there are problems such as high printing pressure, long plate making process, and serious waste of conductive ink.

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