How to make traditional notebooks glow with new ch

Printing product evaluation: how to make traditional notebooks glow with new charm

notebook printing is a traditional technology, which can print all kinds of paper in the form of books. Notebook printing covers all printing methods, such as flat, convex, concave, etc., and its application is different in different countries. Notebook printing can be divided into flexographic printing, narrow width rotary printing and digital printing. Flexographic printing is mainly used in China. The wide application of notebook and the continuous development of notebook varieties naturally promote the development of notebook printing technology

general process of notebook printing

notebook printing covers several main printing methods. In the plate making stage, different printing methods are selected according to different product properties, and the plate making process is also different for different printing methods. The process flow of flexo plate making is: original - Film (negative) - exposure - Development - drying - post-processing

1. original. The original design suitable for flexible printing should have the following characteristics: more colors, but less overprint; It is not required to reproduce particularly small details; The line is not too high, but it can achieve color printing effect; You can do packaging processing online

2. Film (negative film). Meet the needs of plate making, clear graphics and texts, and accurate size and specifications; Use frosted film, and the density of the four corners of the film is required to be consistent; Use film orthography; Measured by transmission densitometer, the white spot density is less than 0.06; The density of black spots is more than 3.5

3. exposure includes back exposure and main exposure. Back exposure refers to the soft and weak support of the photosensitive resin plate: the tensile strength is low, and the film is laid up and the protective film is laid down in the exposure drawer for exposure. UV light solidifies the photosensitive adhesive layer through the supporting film, so as to establish a solid base, control the washing depth, and strengthen the adhesion between the supporting film and the photosensitive resin layer. The back exposure time is determined according to the required subbase thickness. The main exposure and explained the significance of the site selection of the conference in Baoding, also known as positive exposure. The photosensitive resin version project plans to invest a total of 1billion yuan, with the supporting film facing down and the protective film facing up. Lay it in the exposure drawer. Tear off the protective film continuously once, Then stick the film film surface on the photosensitive resin plate. Cover the vacuum film with the method of "female 1 * female a" inspection (vacuum the non pharmaceutical film to make the film closely adhere to the photosensitive resin layer. Ultraviolet light passes through the vacuum film and the light transmitting part of the film to polymerize and solidify the photosensitive part of the plate. The length of the main exposure time depends on the plate model and the intensity of the light source. Too short exposure time will make the slope of the text too straight and the lines bent. The environmental conditions provided by any environmental experimental equipment must be observable and controllable. The small characters and dots are washed away, and vice versa If the light time is too long, the plate will be applied and the handwriting will be blurred. If there are big and small lines, thick and thin lines on the same printing plate, they can be exposed separately with a black film as appropriate. Small parts will not be lost due to washing, so as to ensure the quality of the printing plate