Screen printing stencil and method for imaging it

A printing screen and imaging technology, which is applied in printing, printing machines, printing processes, etc., can solve the problems of low stability and expensive manufacturing of fine mesh screen materials

Inactive Publication Date: 2016-10-26
GALLUS FERD RUESCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This fine mesh wire mesh material is more expensive to manufacture and less stable

Method used

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  • Screen printing stencil and method for imaging it
  • Screen printing stencil and method for imaging it
  • Screen printing stencil and method for imaging it

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Figure 6 A flat screen material 10 with a fabric layer 1 according to the prior art is shown. On one side, the screen material 10 has a photopolymer coating 2 (direct stencil). In an alternative embodiment not shown, an imaged film may be applied to the screen structure 10 (indirect stencil). The nickel-plated flat screen material 10 consists of a fabric 1 . Different forms of fabric, also called fabric types, are possible.

[0041] This type of screen material 10 and the printing screen 10 of the present invention are used in rotary screen printing: Figure 7 A screen 100 is shown comprising a flat screen material 10 formed to create a cylindrical sleeve for rotary screen printing. The mesh material 10 retains its cylindrical shape by end pieces not shown in any detail. A squeegee of an invisible screen printing unit is provided inside the screen 100 to squeeze ink through the screen material 10 . The scrapers may be oriented parallel to the axis of rotation of ...

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PUM

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Abstract

The invention relates to a screen printing stencil with at least one screen-like woven fabric layer (1) with woven fabric strands (6) which are arranged at an angle with respect to one another as carrier structure and with an imaged stencil layer (2), wherein the stencil layer (2) and the woven fabric layer (1) are connected to one another, and wherein the stencil layer (2) is provided with passages (3): according to the invention, a respective passage (3) has a smaller opening (9) on the printing material side (4) of the screen printing stencil (10) than on the squeegee side (5) of the screen printing stencil (10) and forms a continuous channel. A screen printing stencil (10) of this type has sufficient stability and advantageously makes it possible to print very fine lines and dots. The invention also relates to a method for imaging a screen printing stencil of this type.

Description

technical field [0001] The invention relates to a printing screen for screen printing processes having the features described in the preamble of claim 1 . Background technique [0002] The industrial use of screens and fabrics is known in many fields. [0003] Screens used for screening purposes usually have square mesh openings. This mesh shape has also been used in the printing industry. With existing photosensitive layers and known application methods, acceptable image resolution can only be achieved with a large number of "supports". This is why the use of high mesh fabrics is becoming more and more common. [0004] The field of printed electronics requires the use of the thinnest possible screens or fabrics made of the thinnest possible threads to provide smooth flow of paste and to enable printing of very complex images. [0005] The field of coating solar cells, i.e. metallized solar cells, requires the application of large amounts of paste and very precise and hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F15/34B41N1/24B41C1/14H05K3/12
CPCB41C1/145B41F15/0881B41F15/36B41F15/38B41N1/248B41N1/243B41N1/247
Inventor H·布罗克H-R·弗里克M·罗森费尔德
Owner GALLUS FERD RUESCH
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