Engraved intaglio press plate scrapping roller and preparation method

Abstract

Provided are an engraved intaglio press plate scrapping roller and a preparation method. A cast iron roller core, an elastic layer and a face layer are respectively arranged on a plate scrapping roller from inside to outside, the elastic layer is made of compound rubber, the thickness of the elastic layer is 8-12mm, the hardness of the elastic layer is 30-60 shore A, the face layer is made of polyvinyl chloride (PVC) modified resin, the thickness of the face layer is 1-3mm, and the hardness of the face layer is 90-100 shore A. Raw material proportioning of the face layer and the elastic layer and the preparation method are also provided. The elastic layer and the roller core of the plate scrapping roller are firmly glued, service life can prolong more than one year with separation of two sides of the plate scrapping roller and big pressure during using, printing resisting rate of the face layer is particularly and substantially lifted to two times of the original roller, and roller manufacture work load is greatly reduced. In addition, the engraved intaglio press plate scrapping roller is good in elasticity, a printing press can stably operate under lower printing pressure, and machine loads are reduced.

Description

technical field [0001] The invention relates to a printing technology, in particular to a plate cleaning roller and a preparation method for a special engraving gravure printing machine for printing money, belonging to the printing technology. Background technique [0002] The plate wiping roller is used in a special engraving gravure printing machine for printing banknotes. Its function is to erase the ink in the non-graphic part of the printing plate during the printing process, and retain the ink in the pattern part. The ink in the plate is under the action of the pressure device. Transfer from the plate to the substrate to complete the pattern printing. The existing plate-wiping roller is composed of an iron roller core, and the roller core is covered with a bottom layer with a thickness of 4-6mm, and the bottom layer has a hardness of 90-100 Shore A; the bottom layer is an elastic layer, the thickness of the elastic layer is 5-8mm, and the hardness of the elastic layer...

AI Technical Summary

Problems solved by technology

The problems of the wiping roller with this structure are as follows: 1. The material bonded between the bottom layer and the iron roller core is high-hardness PVC resin. There will be a situation where the bottom layer is separated from both sides of the wiping roller. Generally, it needs to be remade after 3 to 6 months of use; 2. The elasticity of the elastic layer is insufficient. After a period of use, the wiping roller will appear under pressure when it is used on the machine. phenomenon, the elastic layer needs to be replaced again; 3. The printing durability of the surface layer is low, and it needs to be replaced after printing about 70,000 to 80,000 large sheets of products. Frequent surface layer replacement will undoubtedly increase the workload of roller makers

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