CN103889688B - Affect the method and device of the surface characteristic of plastic sheeting or metal forming - Google Patents

Affect the method and device of the surface characteristic of plastic sheeting or metal forming Download PDF

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Publication number
CN103889688B
CN103889688B CN201280047288.7A CN201280047288A CN103889688B CN 103889688 B CN103889688 B CN 103889688B CN 201280047288 A CN201280047288 A CN 201280047288A CN 103889688 B CN103889688 B CN 103889688B
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plasma
sided corona
treatment
shell
plasma treatment
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CN103889688A (en
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格哈德·阿勒特
弗兰克·福斯特
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Softal Corona and Plasma GmbH
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Softal Corona and Plasma GmbH
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Priority claimed from EP11183383.6A external-priority patent/EP2574446B1/en
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Abstract

A kind of method of the surface characteristic for affecting metal forming and plastic sheeting of improvement, the method provides the best result by simplifying device structure and can implement in many ways, and wherein at least side of paper tinsel or film surface carries out local plasma treatment basically identical, simultaneously and sided corona treatment.In addition, the present invention relates to by carrying out plasma treatment and sided corona treatment affects the device of surface characteristic of metal forming and Plastic film surface simultaneously, this device has at least one plasma nozzle (1) being arranged in shell (2), for producing and going out plasma jet (6) by jet expansion vectored injection, relative to the counter electrode (4) of jet expansion and have generation high tension generator of alternating voltage in high pressure range, wherein high tension generator produces potential difference by its outfan, on the one hand this outfan is connected with shell (2) and is on the other hand connected with counter electrode (4).

Description

Affect the method and device of the surface characteristic of plastic sheeting or metal forming
Technical field
The present invention relates to method and the dress of a kind of surface characteristic affecting plastic sheeting or metal forming Put.Present invention has particularly advantageous application to the biaxially oriented film being made up of thermoplastic polymer. Furthermore, it is possible to perform the method by disclosed device.
Background technology
Known and in long-term practice, stretched thermoplastic plastic sheeting, on the one hand, at this The thickness of kind of thin film particularly plastic sheeting track and width aspect obtain and desired complete size (Endma β e), on the other hand, stretches on desired direction.Here, make With stretching device, during its two steps being divided into, also exist in some devices During one step, longitudinal stretching plastic sheeting, particularly plastic sheeting guide rail, i.e. Transmission direction or orbital direction stretch and cross directional stretch, laterally draw in particular perpendicular to longitudinal Stretch.
Furthermore it is known that change plastic sheeting and the surface characteristic of metal forming, such as, improve surface and open Power and thus improve the adhesion effect of plastic sheeting, or also improve the surface cleaning of metal forming, Such process is carried out especially at plastic sheeting in the case of activation processing.Special for this Activation processing, including known flame treatment, plasma treatment or sided corona treatment, and these The combination processed.
Here, there is following problems all the time, i.e. as far as possible effectively implement and manage knot at which Surface the most stable in Guo processes.
Special probability described in DE 10 2,005 052 441 is to use relevant plastics thin Film, it is proposed that during for bidirectional stretching plastic film, after longitudinal stretching step, and at horizontal stroke Before stretching step, carry out at plasma on this plastic sheeting width by means of atmospheric pressure Reason, then carries out cross directional stretch, is then followed by carrying out second time and processes, and this process is electricity Dizzy process or flame treatment.The document gives the description of directiveness, give also for existing Further and the more detailed embodiment of technology, and give plasma discharge and corona discharge Model of action, this equally applicable present invention, based on this carry out with reference to and narration.
Method as described at DE 10 2,005 052 441 provides according to the document has height Capillary extraordinary effect, it is conducive to the later stage of plastic sheeting to apply, such as, prints, Show the most suitable activation of film surface.This is in the publication owing at longitudinal stretching (air pressure) plasma treatment afterwards but before cross directional stretch and after cross directional stretch The special combination processed further carried out by means of corona discharge or flame treatment.At this article Method described in offering yet suffers from following point during actual converted:
First, this specific process is only applicable to produce drawing plastic film.The method is not suitable for Metal forming;Process to plastic sheeting subsequently after manufacture it is not suitable for, such as, directly yet New surface active or printing before processing step further are probably desired.
Additionally, must be integrated attached in device on two separate positions of drawing plastic film The equipment added, it is, be used for first processing position longitudinal direction at this device of plasma treatment After extension section, but before cross directional stretch portion, and for the of corona discharge or flame treatment Two positions are after cross directional stretch portion.And, the method can only be carried out in this manner, In which, at longitudinal stretching (first this step) and cross directional stretch (this step is at second) After Fen Kai, drawing plastic film, i.e. there is the production method of cross directional stretch and longitudinal stretching not It is in a single step.Finally, if ought to occur equally on the whole width of thin film at this (this is desired), the sided corona treatment implemented after cross directional stretch or flame treatment Equipment, is built into more corresponding to the plastic sheeting width substantially increased after transverse stretching step Large-sized.So large scale can bring structure, about the problem of instrument and challenge, especially It is uniform over a larger distance and the challenge of homogenizing enforcement so that by the plastic sheeting processed On bigger width after cross directional stretch, there is consistent surface characteristic.For building laterally Implement large-sized requirement of the processing equipment that second time processes after stretching, cause equipment aspect Higher cost.For bigger processing section, add the consumption of processing medium, make operation become This increase.
Summary of the invention
Here, can realize overcoming the problems referred to above by the present invention.The special purpose of the present invention is, The method and device of surface properties for affecting plastic sheeting and metal forming is provided, the method or Device can be used in paper tinsel and the production of thin film with relatively small number of equipment cost and the course of processing is different Position.Especially, also should it is possible that, by the method and device, have at the same time with In the case of the structure of the result that sample is good simplifies, reason thermoplastic polymer can be located and constitute Biaxially oriented film.Especially, in a modification of the method, it is used for performing the method Device should be easily integrated in the existing dress of the plastic sheeting for stretching biaxial tension In putting, this is the same for completing the device of longitudinal direction and cross directional stretch in one step.
This purpose is realized by technical scheme in terms of method, in the reality of the present invention Execute the solution according to the present invention in terms of example provides the device of this purpose.The enforcement of the present invention Example provides the favourable improvement project of the method and the favourable improvement project of this device.
The ultimate principle of the present invention is, at and plasma the most substantially consistent by local simultaneously Reason and sided corona treatment, can effectively long lasting effect metal forming surface characteristic (especially For clean as oil or fat residue) or the surface characteristic of plastic sheeting (activate improvement especially Attachment characteristic).Inventor determines, by one side plasma treatment on the other hand sided corona treatment Substantially consistent and process simultaneously, particularly preferred result can be produced.Additionally, the party Formula provides following probability, i.e. compact and be simply integrated simultaneously and be retrofitted in existing apparatus In equipment in terms of structure.Especially, plasma treatment and sided corona treatment the most in time, And simultaneously occur on place in a common processing region.
Here, the process performed according to the present invention can metal forming or plastic sheeting produce or Complete during subsequently, thus the identical paper tinsel processed through respective surfaces can be provided from factory Or thin film.It may be thus possible, for example, to provide plastics that surface tension significantly improves, that so process Thin film, i.e. it such as needs for reliable and lasting printing.
For plastic sheeting, owing to surface tension declines over time, metal forming may be dirty Dye surface, if directly carried out the place according to the present invention before processing paper tinsel or thin film further Reason, it is possible to be favourable and desired.This can be disposable process, but or also may be used To be process repeatedly.
Especially, the method is suitable on persistent movement and pending paper tinsel or thin film track real Execute.
Especially, the bidirectional stretching plastic film being made up of thermoplastic polymer is according to the present invention Process in the case of confirm, in contrast to DE's 10 2,005 052 441 it is assumed that result not Depend on following situation, i.e. different process steps is separated, and after cross directional stretch, Biaxial stretch-formed different time points implements final process, and this can also by carry out etc. simultaneously from Son processes and sided corona treatment, particularly carries out before cross directional stretch.The place the most simultaneously carried out Reason, had the most both activated plasma and had driven up plasma in the side of surface to be treated, again thin Proceed by corona discharge in film surface range, therefore can carry out before cross directional stretch, make Must plastic sheeting process in, device structure on its whole width corresponding to cross directional stretch it Before narrower width and can be built into less.Therefore, as long as arbitrarily before cross directional stretch At correct position, the compactest device is installed, it is possible to existing for plastic sheeting track Stretching device merges corresponding method step.Preferably, if in office after longitudinal stretching Consistent plasma treatment that the is while of in portion's process range and that preferably carry out and sided corona treatment, This is dispensable, it might even be possible to perform in the method step before this longitudinal stretching, thus It is also employed in especially in the method for stretched plastic film, wherein, in single common step Implement longitudinal stretching and cross directional stretch.
In terms of device, the solution of the present invention is, has the present invention's as already mentioned The device of technical scheme.This device is characterized in that, combination arrange in, this device have to A few plasma nozzle being arranged in shell, this nozzle is used for producing plasma jet and orientation Injection plasma jet, and there is the setting for corona ignition, this setting has serves as The plasma nozzle shell of electrode or the part of this shell, have the corresponding electricity serving as the second electrode Pole, and there is alternating voltage (1000 volts or the higher alternating current produced in high pressure range Pressure) high tension generator.On the one hand this high tension generator is connected with shell by output unit, its At device for the part of ignition power corona as electrode, in the portion of the only shell as electrode In the case of Fen, it is connected with housing portion, is on the other hand connected with counter electrode.
Here, this high tension generator is provided for producing the typical case's height for corresponding sided corona treatment Pressure, under the most typical and general frequency, such as this high pressure can 10 to 20KV it Between, frequency is between 10 to 60kHz.
It is particularly compact according to assembly of the invention, integrated as independent plasma in shell The plasma nozzle of generator, this shell is arranged as the electrode for ignition power corona simultaneously Electrode, save space to the full extent, allow at the same time to be moved by this layout Paper tinsel or thin film or paper tinsel track or effective process of thin film track, and the side sprayed at paper tinsel or thin film Upwards and by the corona discharge of the igniting between shell and motor or the type that thus occurs.
The plasma nozzle used in a device in accordance with the invention, such as, can be as at DE 196 48 999 descriptions, and AFS development and sale company limited (AFS Entwicklungs-und Vertriebs GmbH) with trade markThere is provided and sell.
In order to pass through according to assembly of the invention at pending metal forming or pending plastics Realizing enough surfaces in the overall width of thin film to process, this shell can be configured to the beam stretched out Shape, this shell under any circumstance by corresponding paper tinsel track or thin film track towards part and As the electrode of plasma discharge equipment, wherein, along longitudinally disposed multiple next-door neighbour arrange etc. Iron nozzle.The plasma nozzle arranged by such multiple next-door neighbours, it is possible to achieve homogeneous The plasma radiation or plasma cloud, this plasma radiation or the plasma cloud that elongate can be again at them On whole width, pending surface is carried out uniform plasma treatment.Similarly, by electricity Corona by plasma treatment, completes the uniform sided corona treatment to surface simultaneously, if this electricity On the whole width of corona shell between this shell, this shell is as electrode, and activates Counter electrode.
This counter electrode is coated with electrolyte and can have the advantage that.That thus avoids between electrode is direct Electric arc, and ensure compliance with adjustment boundary condition (the high electricity of applying depending on width of air gap accordingly Pressure and frequency), putting as the igniting between shell or housing portion and the counter electrode of electrode Electricity is corona discharge.
Particularly advantageously, counter electrode can be roller electrode.Especially, process paper tinsel track or During thin film track, this roller electrode can function simultaneously as the reliable guiding processing track, if this rail Road moves on roller electrode or transmits.If track is positioned on roller electrode and directly contacts, permissible Avoid the sided corona treatment at the back side so that the only paper tinsel of opposite article on plasma nozzle or the surface of thin film is entered Row plasma treatment and sided corona treatment.By on purpose providing air gap, can be at such dress In putting except carry out in the face of the metal forming front of plasma nozzle or plastic sheeting front etc. from Son processes and sided corona treatment, it is also possible to carry out sided corona treatment overleaf, and this is for paper tinsel or thin film Ensuing that be advantageously applied and desired.
Especially, depend on the connection of plasma nozzle and depend on processing the type of material, making Shell or corresponding housing portion for electrode can be corresponding on earth potential (Erdpotential) Electrode connects with corresponding high voltage potential, or provides Opposite direction connection, right in this Opposite direction connection Answering electrode ground connection, this shell or the housing portion as electrode are in high voltage potential.
Can it appear that, compact, particularly because at present according to assembly of the invention structure Plasma nozzle the least in structure can be produced, outside being therefore desirably integrated under technical conditions In space crowded in shell, this shell is as the parts according to assembly of the invention, as corona The electrode of electric discharge device.Thus, according to assembly of the invention can pending paper tinsel, thin film or Extend on pending paper tinsel track or the whole width of thin film track.
Because at cross directional stretch pre-test width, so the biaxial stretching before cross directional stretch In the process of plastic sheeting, this width and warp in the method according to DE 10 2,005 052 441 Cross flame treatment or sided corona treatment stretch in the horizontal after the width of relevant device that provides compare Less.
Accompanying drawing explanation
Description to embodiment is given below other advantage and feature in conjunction with accompanying drawing.Accompanying drawing In:
Fig. 1 be shown in schematically first may connect in respective handling method According to during the enforcement of the present invention according to apparatus of the present invention;And
Fig. 2 is the signal the most relatively according to apparatus of the present invention in Opposite direction connection Figure.
Detailed description of the invention
Figure illustrates schematically according to assembly of the invention, it is shown that it processes metal forming rail Road or plastic sheeting track are how to build, connect and work.
Apparatus of the present invention are by the plasma nozzle as plasma source and by electrode and correspondence electricity Combination between the layout for corona discharge that pole is constituted collectively forms.Plasma nozzle 1 is not Being perpendicular to mark layer is closely arranged in the shell 2 including this plasma nozzle 1 with describing in detail In.Shell 2 in the drawings part electrode as corona discharge device is illustrated below, and pass through Attachment means 3 is connected with the high tension generator not described in detail herein.In this embodiment, roller Electrode 4 is as the counter electrode of corona discharge device, and this roller electrode 4 is coated with dielectric Metal roller.Similarly, this carrying roller is not connected with high tension generator with describing in detail herein, It is connected with the second delivery outlet of this high tension generator.
In operation, the track 5 of metal forming or plastic sheeting runs on roller electrode 4, and with Dorsad roller electrode 4, towards plasma nozzle 1 or the mode of shell 2, local and time upper one Cause carries out plasma treatment and sided corona treatment.To this, the plasma of generation in plasma nozzle 1 As plasma jet 6 towards the track of paper tinsel in processing or the track 5 of thin film surface by etc. from Sub-nozzle 1 sprays.Simultaneously between shell 2 and roller electrode 4, by high pressure range High-frequency alternating current pressure device activates corona discharge, here, this corona discharge numeral 7 illustrates. This corona discharge 7 also affects the track 5 of paper tinsel or the surface of the track 5 of thin film.
Because Fig. 1 and Fig. 2 is identical in respective view, they differ only in, and make Shell (housing portion) 2 and the connection of roller electrode 4 for electrode.Shell 2 in Fig. 1 connects During earth potential, roller electrode 4 is set to high voltage, is precisely and connects on the contrary in Fig. 2.Former Then going up, two kinds of connected modes may be used to corona discharge.Certainly, institute is utilized at metal track State in the case of device carries out surface process, can select to connect according to Fig. 2, to avoid roller electricity The voltage extremely gone up is directed in whole system on other assembly (being not shown here).
This problem is there is not in the case of electrically isolated plastic sheeting carries out surface process.At this For the plasma nozzle 1 used and working method thereof, the connection side that optional electricity aspect is favourable Formula.
The plasma nozzle 1 not being described and illustrated in detail at this is preferably directed at DE 196 48 This type described in 999 and model of action.
According to the present invention, during producing plastic sheeting track by the device shown in figure, mould Processing of material thin film track occurs before the cross directional stretch of the thin film track 5 processed, especially It is can to carry out after longitudinal stretching, but can also be before.
The electrical connection of plasma nozzle 1 is integrated in shell 2, does not describes in detail here.Deng from Sub-nozzle is corresponding to the requirement to element, i.e. plasma nozzle is connected to high Hair Fixer by shell On raw device, and as the not contradiction of the electrode for corona discharge 7.
Description of reference numerals
1 plasma nozzle
2 shells
3 attachment means
4 roller electrodes
5 metal forming tracks and plastic sheeting track
6 plasma jets
7 corona discharges

Claims (13)

1. the method for the surface characteristic affecting metal forming and plastic sheeting, it is characterised in that
At least side, surface of paper tinsel or thin film locally, unanimously, is simultaneously carried out plasma treatment And sided corona treatment.
2. the method for claim 1, it is characterised in that
Locally, unanimously the plasma treatment, simultaneously carried out and sided corona treatment occur at paper tinsel or thin In the manufacture of film, or the most after the fabrication.
3. such as method in any one of the preceding claims wherein, it is characterised in that
Locally, unanimously, plasma treatment and the sided corona treatment simultaneously carried out occurs directly in paper tinsel Or before being processed further of thin film.
4. the method for claim 1, it is characterised in that
Described method performs constantly, to this end, paper tinsel or thin film as track relative to performing institute The vertical of device stating method moves up, for local, unanimously, simultaneously plasma treatment and Sided corona treatment.
5. the method for claim 1, it is characterised in that
For the biaxially oriented film being made up of thermoplastic polymer, drawing of this thermoplastic polymer Stretch is longitudinally to carry out longitudinal stretching and laterally carrying out cross directional stretch, before cross directional stretch Step in, at least side of Plastic film surface is simultaneously carried out at plasma treatment and corona Reason.
6. method as claimed in claim 5, it is characterised in that
On the whole width transversely extended of plastic sheeting not carrying out cross directional stretch simultaneously Ground carries out plasma treatment and sided corona treatment.
7. the method as described in claim 5 or 6, it is characterised in that
Carry out plasma treatment and sided corona treatment after longitudinal stretching simultaneously.
8. one kind affects metal forming by carrying out plasma treatment and sided corona treatment simultaneously and moulds The device of surface characteristic of material thin film (5), its have at least one arrange in the enclosure etc. Iron nozzle (1), is used for producing and by jet expansion vectored injection plasma jet (6), phase To the counter electrode (4) of jet expansion setting and for producing the alternating current in high pressure range The high tension generator of pressure, wherein, this high tension generator produces potential difference by its outfan, should On the one hand outfan is connected with shell (2), and is on the other hand connected with counter electrode (4), Described high pressure is 1000V or higher.
9. device as claimed in claim 8, it is characterised in that
Shell (2) is formed as elongated beam-like, has the plasma being disposed adjacent in a longitudinal direction thereof Nozzle (1).
10. device as claimed in claim 8 or 9, it is characterised in that
Counter electrode (4) is coated with electrolyte.
11. devices as claimed in claim 8 or 9, it is characterised in that
Counter electrode (4) is roller electrode.
12. devices as claimed in claim 8 or 9, it is characterised in that
High tension generator is connected with shell by ground connection outfan.
13. devices as claimed in claim 8 or 9, it is characterised in that
High tension generator is connected with counter electrode by ground connection outfan.
CN201280047288.7A 2011-09-30 2012-09-17 Affect the method and device of the surface characteristic of plastic sheeting or metal forming Active CN103889688B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11183383.6A EP2574446B1 (en) 2011-09-30 2011-09-30 Method and Device for Manipulating Surface Characteristics of Plastic Films or Metal Foils
EP11183383.6 2011-09-30
PCT/EP2012/068236 WO2013045304A1 (en) 2011-09-30 2012-09-17 Method and device for influencing surface properties of plastic films or metal foils

Publications (2)

Publication Number Publication Date
CN103889688A CN103889688A (en) 2014-06-25
CN103889688B true CN103889688B (en) 2016-11-30

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6429595B1 (en) * 2001-02-14 2002-08-06 Enercon Industries Corporation Multi-mode treater with internal air cooling system
DE102005052441A1 (en) * 2005-11-03 2007-05-16 Treofan Germany Gmbh & Co Kg Biaxially oriented polyolefin film with improved surface properties

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6429595B1 (en) * 2001-02-14 2002-08-06 Enercon Industries Corporation Multi-mode treater with internal air cooling system
DE102005052441A1 (en) * 2005-11-03 2007-05-16 Treofan Germany Gmbh & Co Kg Biaxially oriented polyolefin film with improved surface properties

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