RU42113U1 - PHOTO-POLYMER PRINTING FORM "FARTUK" WITH DEPRECIATION (COMPRESSION) SUBSTRATE - Google Patents

Abstract

A photopolymer apron printing plate with a cushioning (compression) substrate refers to printing plates based on photosensitive compositions used for flexographic printing. The photopolymer printing plate "apron" consists of a photopolymer plate, a cushioning (compression) substrate and two mounting plates designed to fix the printing plate to the printing shaft. The photopolymer apron printing plate with a cushioning (compression) substrate allows to reduce the mass of the printing plate, reduce the complexity of its manufacture, allows to obtain printed elements up to 0.1 mm in size, to improve the reproduction of thin line elements and raster sections, to obtain a clean, clear raster point, provide higher printing speed and better register and generally improve the operational characteristics of flexographic machines and units.

Description

The invention relates to photopolymer printing plates based on photosensitive compositions used for flexographic printing.

Known photopolymer printing plate "apron", consisting of a photopolymer plate (3.94-6.35 mm thick), double-sided tape and a flexible lavsan substrate, for example, "Astrolon") (Flexo Plus Magazine, No. 2 (8) April 1999 g.).

The disadvantage of this photopolymer "apron" shape is the complexity of its manufacture: a photopolymer plate 3.94-6.35 mm thick is mounted on a polyester film using double-sided tape, 0.1-0.3 mm thick, then the shock-absorbing (compression ) the substrate is also using double-sided tape, after which the printing plate is fixed on the printing cylinder with

using appropriate snap-in or sticks.

The photopolymer form obtained in this way does not provide high accuracy of geometric combination of images when printing with two or more colors, does not allow to obtain print elements with a size of less than 0.3 mm, has a large mass and requires increased printing pressure to ensure reliable transfer of ink to the substrate, which leads to increased dot gain, reduced service life of the printing plate itself.

The purpose of the claimed utility model is to reduce the complexity of its manufacture, reduce the mass of the photopolymer "apron" shape, the ability to obtain printed elements up to 0.1 mm in size, increase print run resistance and increase resistance to mechanical damage, obtain accurate geometric alignment when applying an image in two or more colors.

The goal is achieved by the fact that the photopolymer printing plate "apron" proposed as a utility model consists of a photopolymer plate with a thickness of 1.7 to 2.84 mm, a cushioning (compression) substrate and mounting plates for fixing the "apron" printing plate to the printing shaft ( Fig.).

Brief Description of the Drawings FIG. - a general view and a vertical section of the photopolymer printing apron form with a cushioning (compression) substrate

1 - photopolymer plate;

2 - depreciation (compression) substrate;

3 - fixing strips;

4 - rivets.

Information confirming the possibility of implementing a utility model.

For the manufacture of photopolymer printing plate "apron" with a cushioning (compression) substrate (Fig.), A photopolymer plate 1 is used, a thickness of 1.7-2.84 mm The photopolymer plate is exposed under optimal conditions, allowing the photopolymer to be washed to the minimum thickness of the gap elements (0.2-0.3 mm), it is dried, finished, trimmed to the specified format, then the photopolymer plate is glued to the cushioning (compression) substrate 2, by with two rivets 4, fasteners 3 are fastened with rivets 4, which are designed to fix the "apron" printing form onto the printing shaft of a flexographic printing machine.

The technical result of the proposed utility model

lies in the fact that the photopolymer printing plate "apron" with a cushioning (compression) substrate allows to reduce the mass of the printing plate, reduce the complexity of its manufacture, allows to obtain printed elements up to 0.1 mm in size, to improve the reproduction of thin line elements and raster sections, to obtain a clean , a clear raster dot, to provide a higher printing speed and a better register and generally improve the operational characteristics of flexographic machines and units.

Claims (1)

Photopolymer printing plate “apron” with a cushioning (compression) substrate, consisting of a photopolymer plate, a cushioning (compression) substrate and two mounting plates designed to fix the printing plate to the printing shaft.