Method and device for influencing the surface properties of plastic films or metal foils
A technology of plastic film and surface properties, applied in the direction of corona discharge devices, plasma, electrical components, etc., can solve the problems of increased operating cost, high cost, increased process medium consumption, etc., and achieve the effect of compact structure and space saving
Active Publication Date: 2016-11-30
SOFTAL CORONA & PLASMA GMBH
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- Abstract
- Description
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- Application Information
AI Technical Summary
Problems solved by technology
Requirements of large dimensions for constructing the treatment equipment for carrying out the second treatment after transverse stretching, resulting in higher costs in terms of equipment
For larger process sections, increased consumption of process media increases operating costs
Method used
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Embodiment Construction
[0029] The figure shows schematically the device according to the invention, showing how it is constructed, connected and works for processing metal foil tracks or plastic film tracks.
[0030] The device according to the invention consists of a combination of a plasma nozzle as plasma source and an arrangement for corona discharge consisting of electrodes and counter-electrodes. The plasma nozzle 1 , not described in detail, is arranged perpendicularly to the marking layer in the immediate vicinity of the housing 2 containing the plasma nozzle 1 . The housing 2 shown in the lower part of the figure serves as an electrode of the corona discharge device and is connected via a connecting device 3 to a high-voltage generator not described in detail here. In this embodiment, the roller electrode 4 is a metal idler roller coated with a dielectric as the counter electrode of the corona discharge device. Likewise, the idler roller is connected, not described in detail here, to a hig...
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An improved method for influencing the surface properties of metal foils and plastic films, which provides equally good treatment results by simplifying the construction of the apparatus and which can be implemented in various ways, wherein at least one side of the surface of the foil or film is substantially uniform locally , simultaneous plasma treatment and corona treatment. Furthermore, the invention relates to a device for influencing the surface properties of metal foils and plastic film surfaces by simultaneous plasma treatment and corona treatment, the device having at least one plasma nozzle (1) arranged in a housing (2) for generating and the plasma flow (6) is directional ejected through the nozzle outlet, with respect to the corresponding electrode (4) of the nozzle outlet and has a high-voltage generator generating an AC voltage in the high-voltage range, wherein the high-voltage generator generates a potential difference through its output terminal, the The output is connected on the one hand to the housing (2) and on the other hand to the counter electrode (4).
Description
technical field [0001] The invention relates to a method and a device for influencing the surface properties of plastic films or metal foils. The invention is particularly advantageously applied to biaxially oriented films composed of thermoplastic polymers. Furthermore, the method can be performed by the disclosed apparatus. Background technique [0002] It is known and has been practiced for a long time to stretch thermoplastic films, on the one hand, to obtain the desired finished dimensions (Endma βe) with respect to the thickness and width of such films, in particular plastic film tracks, and, on the other hand, for the desired stretch in the direction. Here, a stretching device is used which, in the course of its division into two steps, also in some devices already in one step, longitudinally stretches the plastic film, in particular the plastic film guide, i.e. the transport direction or track Directional stretching and transverse stretching, especially transverse...
Claims
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IPC IPC(8): B29C59/10B29C59/14H01T19/00H05H1/00B29C55/12
Inventor 格哈德·阿勒特弗兰克·福斯特
Owner SOFTAL CORONA & PLASMA GMBH