SU885061A1 - Method of hot moulding of cardboard matrices - Google Patents

Description

(54) METHOD FOR HOT CARDBOARD MATERIALS

one

The invention relates to printing, in particular to methods of matrixing cardboard matrices for casting stereotypes from a typographic alloy therefrom.

There is a known method of hot matrizing cardboard matrices, consisting in overlaying the original form of a moistened matrix board and on it with a flooring package, in embossing and drying in a press lJPacking flooring can consist of several layers of flannels, canvas or paper. Sometimes paper is used instead of paper. Also used for the flooring of elastic synthetic materials using offset rubber and plastics.

A disadvantage of the known method is the considerable condensation of moisture by the layers of the flooring, which leads to an increase in the time of the process of maturing and, as a result, to rapid wear of the original form. In addition to the mattress

First, due to the uneven removal of water vapor from the surface of the matrix during drying in a press under pressure, uneven shrinkage of the matrix is observed, and deformation of its face layer with the formation of a multitude of microcracks.

The purpose of the invention is to increase the productivity of the matrixing process. ten-

The goal is achieved by the fact that in the method of hot maturing of cardboard matrices, including the sequential imposition on the original form of the moistened matrix cardboard and on the flooring package, embossing and drying in a press, as a top layer of the flooring package, use a grid that is not deformed.

20 load directions for embossing, for example, brass mesh.

Technological way is looking for the future.

A frame with a set is installed on the bottom plate of the matrix press, on which a moistened matrix board and a flannel and brass layer mesh are placed on the grid.

After this, the necessary pressure is created. Throughout the whole process of matrixing, the desired temperature is maintained;

Due to the rapid and uniform removal of water vapor from the surface of the matrix, the residence time of the matrix under pressure is reduced by about 1.5-2 times. The deformation of the front part of the matrix is significantly reduced (practically there are no microcracks |. After matrixing the matrix. / They contain much less residual moisture.

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Claims (2)

1. A method of hot matrizing cardboard matrices, including sequential overlaying onto the original form of a moistened matrix board and onto it a flooring bag, embossing and drying in a press, characterized in that, in order to improve the performance of the matrixing process, as a top layer, the flooring bag is used a grid that does not form in the direction of the load when embossed. 2. The method according to claim 1, characterized in that use brass mesh. Sources of information taken into account 1ph expertise 1. Kolosov A.I. Typesetting and stereotyped processes. M., Book, 1974.