A kind of ink transfer medium and preparation method thereof

Abstract

The invention provides an ink transfer medium and a preparation method thereof. The ink transfer medium comprises: a first base material layer; an air cushion layer located on the first base material layer; a second base material layer located on the air cushion layer; a surface adhesive layer, located on the second base material layer; wherein, the first base material layer includes at least one cloth layer, and the radial elongation of the cloth layer is less than or equal to 4.5%, prepared by the present invention The obtained ink transfer medium has high initial bonding strength between the base material and the rubber, good adhesion durability, the deformation of the base material and the deformation of the surface-coated rubber are close and stable when an external force is applied, and the physical properties are stable and consistent.

Description

A kind of ink transfer medium and preparation method thereof technical field The invention belongs to the lithographic technical field, be specifically related to a kind of ink transfer medium and preparation method thereof. technical background The ink transfer medium (blanket) used in offset printing (lithographic printing) is made of multi-layer base fabric layers and synthetic rubber calendering. It is made by lamination, and the cloth used is an elastic fiber textile, and the elasticity of the cloth has obvious directionality. The base layer is The basic skeleton of the offset printing blanket, in a certain sense, the quality of the offset printing blanket, the base cloth layer is the decisive factor, especially It is the role of the air-cushion compressible blanket base cloth used in high-speed rotary offset presses. Existing blanket in printing, the deformation of base cloth layer is large and the printing quality problem that directly brings is increasingly ...

AI Technical Summary

Problems solved by technology

[0004] The printing quality problem directly caused by the large deformation of the base cloth layer of the existing blanket during printing has become increasingly prominent. In order to better adapt to the domestic market and reduce dependence on developed capitalist countries, the cloth layer used for ink transfer media has been improved. Improving the performance of ink transfer media is particularly necessary

Generally speaking, the more layers of base fabric in the blanket, the better, but the more layers, there is also the problem of overall deformation of the blanket

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