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Method for surface treating a substrate and device for carrying out the method

A technology for surface treatment and substrate, which can be applied to devices for coating liquid on surfaces, spray devices with movable outlets, spray devices, etc., and can solve problems such as damage to components

Active Publication Date: 2012-10-10
KALWAR CFT FUSIONS TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is not possible to prevent the escaping liquid from being applied to the individual components, which eventually requires correspondingly frequent cleaning work and overall damages these components at the same time

Method used

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  • Method for surface treating a substrate and device for carrying out the method
  • Method for surface treating a substrate and device for carrying out the method
  • Method for surface treating a substrate and device for carrying out the method

Examples

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Embodiment Construction

[0031] exist figure 1 with 2 A device for surface treatment of a substrate 4 , which is formed, for example, as a plastic film to be coated, is shown in .

[0032] For simplicity, the figure 1 The apparatus shown in is divided into three parts A, B, and C, each of which depicts a block diagram illustrating the method.

[0033] Part A is in figure 2 given again as part of .

[0034] The surface treatment is carried out by means of a corona discharge, for which two corona electrodes are provided, one of which is connected as a support electrode 1 via a line 16 to a generator 9 which generates a high voltage and is connected to a current line 14, while the other corona The electrode is grounded via the ground line 15 as the counter electrode 2 . Instead, of course, the counter electrode 2 can also be connected to voltage and the carrier electrode 1 can be grounded.

[0035] The counterelectrode 2 is arranged below the support electrode 1 through a plane H which is guided r...

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Abstract

The invention relates to a method for surface treating a substrate (28) by means of an electrical corona discharge, wherein aerosols (5) are sprayed in the discharge area defined by an active gap formed between a corona electrode and the substrate (28) during the discharging, designed such that the aerosols (5) are sprayed substantially opposite the direction of gravity.

Description

technical field [0001] The invention relates to a method for the surface treatment of substrates according to the preamble of claim 1 and a device for carrying out the method. Background technique [0002] From EP 0 279 371 B1 it is known to apply an aerosol to the surface of the plastic in order to achieve improved and uniform adhesion for subsequent coatings, or in a corresponding variant to apply the aerosol directly to the surface of the plastic. [0003] In the first case it is possible, for example, to atomize the water into an aerosol, while in the second case, ie for direct coating of plastic surfaces, suitable solutions are used. [0004] In order to generate a corona discharge, two electrodes arranged at a distance from one another are required, at least one of which is supplied with a high voltage and the other electrode is grounded. The aerosol is sprayed into the discharge area, which is defined by an effective gap of about ≤ 2 mm wide formed between the corona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C59/12H01T19/00C23C16/54B05D7/24
CPCB05D3/144B29C59/12H01T19/00Y02P20/582Y10T428/25Y10T428/265B05B3/08B05C11/10B05D1/02B05D3/14B05D7/24C23C16/54B05C9/02
Inventor 克劳斯·卡尔瓦尔
Owner KALWAR CFT FUSIONS TECH GMBH