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Method and appts. for coating liquid mixture onto strip print material

A technology for liquid mixture and printing materials, which is used in devices for coating liquid on surfaces, general parts of printing machinery, printing, etc., and can solve problems such as short response time, large buffer and mixing container sizes, and changing buffer and mixing containers.

Inactive Publication Date: 2004-08-11
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Furthermore, due to the large size of the buffer and mixing container of this known device, it is not possible to change the mixing ratio in the buffer and mixing container with a short response time in order to adapt, for example, to a new printing job.

Method used

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  • Method and appts. for coating liquid mixture onto strip print material

Examples

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Embodiment Construction

[0036] A material web, in particular a printing material web 24 such as a paper web, after unwinding and printing on the printing unit, passes through a hot air dryer 84 and then passes through cooling rollers 86, 88 flushed with coolant for cooling and 90 is guided in the direction of movement 92 .

[0037] The moisture 94 is also removed from the belt 24 in the dryer 84 by means of the hot air which evaporates the solvent of the printing ink, so that it is then necessary to at least partially remoisten the belt 24 .

[0038] The cooling of the belt 24 will cause the printing ink to harden, however, there will be printing ink falling off on the guide rollers or guide surfaces in the next machine part, such as the folder. The shedding of the ink can be prevented by coating the belt 24 with silicone oil.

[0039] A first liquid 1 , here a silicone oil concentrate 1 , is received in a storage container 2 . The container 2 can receive, for example, a sufficient amount of silico...

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Abstract

A device according to the present invention is described for applying a liquid mixture of a first liquid and at least one second liquid to web-shaped printing material, having a reservoir for the first liquid, a supply source for the second liquid, a mixing tank for the first liquid and the second liquid, an applicator for transferring the liquid mixture onto the printing material, the applicator having at least one container for the liquid mixture. The device is characterized in that a buffer tank is provided for the first liquid, which is separated from the mixing tank.

Description

technical field [0001] The invention relates to a device for applying a liquid mixture of a first liquid and at least one second liquid to a web-shaped printing material. Furthermore, the invention relates to a method for applying a liquid mixture of a first liquid and at least one second liquid to a web-shaped printing material. Background technique [0002] In rotary offset printing presses, the paper web is usually unwound from a supply cylinder and guided through several printing units, which print the paper web double-sided and multicoloured, usually using the wet offset method. In order to dry the paper web and the fresh printing ink, the paper web is guided through a hot air dryer in which the water and the wet solvent of the printing ink are evaporated. Then, in order to harden the liquid ink, the paper web is guided over cooling rollers of a cooling roller station, which are flushed with a coolant. In order to produce the finished printed product, the paper strip ...

Claims

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Application Information

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IPC IPC(8): B41F22/00B41F23/00
CPCB41F22/00B41F23/00
Inventor 克莱门丝·约翰内斯·玛丽亚·德弗罗梅
Owner HEIDELBERGER DRUCKMASCHINEN AG
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