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WO2008136029A1 - Appareil pour le traitement par plasma froid d'un matériau en bande continue - Google Patents

Appareil pour le traitement par plasma froid d'un matériau en bande continue Download PDF

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Publication number
WO2008136029A1
WO2008136029A1 PCT/IT2007/000339 IT2007000339W WO2008136029A1 WO 2008136029 A1 WO2008136029 A1 WO 2008136029A1 IT 2007000339 W IT2007000339 W IT 2007000339W WO 2008136029 A1 WO2008136029 A1 WO 2008136029A1
Authority
WO
WIPO (PCT)
Prior art keywords
web material
treatment
plasma treatment
chamber
continuous web
Prior art date
Application number
PCT/IT2007/000339
Other languages
English (en)
Other versions
WO2008136029A8 (fr
Inventor
Stefano Fort
Giuseppe Ramponi
Stefano Restelli
Claudia Riccardi
Paola Esena
Riccardo Siliprandi
Maria Rosaria Massafra
Bruno Marcandalli
Original Assignee
Arioli S.P.A.
Universita Degli Studi Di Milano-Bicocca
Stazione Sperimentale Per La Seta
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arioli S.P.A., Universita Degli Studi Di Milano-Bicocca, Stazione Sperimentale Per La Seta filed Critical Arioli S.P.A.
Priority to PCT/IT2007/000339 priority Critical patent/WO2008136029A1/fr
Publication of WO2008136029A1 publication Critical patent/WO2008136029A1/fr
Publication of WO2008136029A8 publication Critical patent/WO2008136029A8/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/14—Surface shaping of articles, e.g. embossing; Apparatus therefor by plasma treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/14—Surface shaping of articles, e.g. embossing; Apparatus therefor by plasma treatment
    • B29C2059/145—Atmospheric plasma

Definitions

  • the present invention relates to apparatuses for the cold plasma treatment of web materials, and in particular to an apparatus for the treatment of a continuous web material.
  • the vacuum treatment also has the drawback that when the treatment gas has to be changed the chamber must be "washed” with a cleaning gas and then vacuum must be re-created prior to the introduction of the new treatment gas. Furthermore, even after such a wash, there is a risk of pollution of the new gas since the substances used in the previous treatment may be stuck on the inner surfaces of the chamber and then be released when vacuum is re-created.
  • the atmospheric pressure treatment does not suffer from these drawbacks since it is carried out in an open treatment chamber that allows a continuous treatment, does not require the creation of vacuum and when changing the treatment gas there is no need for a wash and no risk of pollution of the new gas.
  • the treatment gas usually employed is air or nitrogen without the addition of expensive or polluting substances. This results in a poor flexibility of the apparatus that can be used only for the few types of treatment allowed by the few types of treatment gas that can be employed.
  • the object of the present invention is to provide an apparatus which overcomes the above-mentioned drawbacks.
  • This object is achieved by means of an apparatus at atmospheric pressure yet provided with a closed chamber having seals suitable for feeding a continuous web and containing at least a plasma treatment station including an injection pipe for introducing the treatment gas close to the electrode.
  • Other advantageous features of the present apparatus are disclosed in the dependent claims.
  • a first important advantage of this apparatus is that of retaining the productivity of the continuous treatment while dramatically reducing the operational cost. In fact, there are neither problems of expensive seals and of having to create vacuum, as in a vacuum apparatus, nor problems of high treatment gas consumption as in an open chamber apparatus.
  • a second significant advantage of such an apparatus is that of retaining the flexibility of treating with various types of gas while reducing the operational time and cost.
  • Still another advantage of said apparatus resides in the prevention of the risk of pollution of a new treatment gas, since by operating at atmospheric pressure the substances used in the previous treatment do not get stuck on the inner surfaces of the chamber and can be effectively washed away.
  • Fig.l is a diagrammatic sectional view of an embodiment of the present apparatus including two plasma treatment stations;
  • Fig.2 is a partial enlarged view of the web entrance/exit area with the relevant seals and the web feeding device;
  • Fig.3 is a partial diagrammatic view showing the arrangement of the web for a double treatment on a single side of the web;
  • Fig.4 is a partial diagrammatic view showing the arrangement of the web for a single treatment on both sides of the web.
  • an apparatus conventionally includes at least one plasma treatment station 1, but preferably two or more stations, that essentially consists of a discharge roller 2 and at least one adjacent electrode 3 between which the web material W to be treated is passed.
  • the discharge roller 2 is coated with a dielectric material, and the position of electrode 3 can be adjusted between an operating position and a rest position (in broken lines).
  • a high tension generator feeds electrode 3 so as to cause an electric discharge that ionizes the gaseous mixture used as treatment gas, whereby a plasma state is generated in the gas and the substances and the charged and neutral species contained in the mixture interact with the surface of the web material W, which is guided to and from the treatment station 1 by a plurality of idle rollers 4 that define its path.
  • the movement of web W around rollers 2, 4 is provided by a feed device consisting of a drive roller 5, driven by an inverter- controlled motor-reducer, cooperating with two adjustable contrast rollers 6 that guarantee the proper dragging of web W.
  • a first novel aspect of the present apparatus is given by the presence of a closed chamber 7, that contains the plasma treatment station(s) 1 and is provided with a sealing system 8 suitable to allow the feeding of the continuous web W.
  • each treatment station 1 includes at least one injection pipe 9, i.e. a bar provided with a series of nozzles, for introducing the treatment gas close to electrode 3 (the gaseous mixture comes from a mixing and dosing system that is not illustrated).
  • the closed chamber 7 is accessible for maintenance operations and the like through a pair of top doors 10 that open upwards. These doors 10 are preferably made of a transparent material suitable to allow a visual control of the operation of the apparatus.
  • the sealing system 8 consists of a central duct 11, located at an aperture in the bottom of chamber 7, and two sections 12, 12' hinged to the structure of chamber 7 so as to abut against the sides of duct 11 and thus close the above-mentioned aperture.
  • first section 12 is hinged at the base through a first pivot 13 so as to rest against duct 11 by gravity
  • second section 12' is hinged at the top through a second pivot 13' and is provided with a top support 14 extending beyond pivot 13', so as to rest against duct 11 under the push of a counterweight 15 mounted on said support 14.
  • the continuous web material W can enter chamber 7 moving upwards (as indicated by the relevant arrow) between duct 11 and the first section 12, whose mobile top end allows the passage of seams in the web and automatically adapts to different web thicknesses.
  • the continuous web material W can exit chamber 7 moving downwards (as indicated by the relevant arrow) between duct 11 and the second section 12', whose mobile bottom end allows the passage of seams in the web and automatically adapts to different web thicknesses.
  • the central duct 11 is in communication with a suction system (not shown) and is provided with slots 11a, lib formed in the sides just upstream from, with respect to the direction of movement of web W, the abutment positions of sections 12, 12'.
  • a suction system not shown
  • slots 11a, lib formed in the sides just upstream from, with respect to the direction of movement of web W, the abutment positions of sections 12, 12'.
  • the position of the sealing system 8 and of doors 10 may change depending on specific construction needs, and sections 12, 12' may be pushed against the central duct 11 by other equivalent means different from the above- illustrated gravity system, such as spring means of the mechanical or pneumatic kind.
  • the web material W could slide on duct 11 even along the top and bottom thereof rather than along the sides, as long as it slides along two opposite faces.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

Cette invention se rapporte à un appareil pour le traitement par plasma froid à température atmosphérique d'un matériau en bande continue (W). L'appareil comprend au moins un poste de traitement par plasma (1) se composant d'un rouleau de décharge (2) et d'une électrode adjacente (3) entre lesquels passe le matériau en bande continue (W), une chambre fermée (7) appropriée pour contenir ledit ou lesdits postes de traitement par plasma (1) et équipée d'un système d'étanchéité (8) approprié pour permettre l'acheminement du matériau en bande continue (W), ainsi qu'au moins un tuyau d'injection (9) approprié pour introduire un gaz de traitement près de l'électrode (3). De cette façon, il est possible d'obtenir la productivité du traitement continu et la flexibilité du traitement avec différent types de gaz tout en réduisant radicalement le temps et le coût de fonctionnement, étant donné qu'il n'y a ni problèmes d'étanchéités coûteuses et de besoin de recréer un vide après le changement du gaz de traitement, comme dans un appareil à vide, ni problèmes de consommation de gaz de traitement élevée et de limitation aux gaz de traitement bon marché et non polluants comme dans un appareil à chambre ouverte.
PCT/IT2007/000339 2007-05-08 2007-05-08 Appareil pour le traitement par plasma froid d'un matériau en bande continue WO2008136029A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IT2007/000339 WO2008136029A1 (fr) 2007-05-08 2007-05-08 Appareil pour le traitement par plasma froid d'un matériau en bande continue

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2007/000339 WO2008136029A1 (fr) 2007-05-08 2007-05-08 Appareil pour le traitement par plasma froid d'un matériau en bande continue

Publications (2)

Publication Number Publication Date
WO2008136029A1 true WO2008136029A1 (fr) 2008-11-13
WO2008136029A8 WO2008136029A8 (fr) 2009-01-08

Family

ID=38961216

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2007/000339 WO2008136029A1 (fr) 2007-05-08 2007-05-08 Appareil pour le traitement par plasma froid d'un matériau en bande continue

Country Status (1)

Country Link
WO (1) WO2008136029A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018078237A1 (fr) 2016-10-27 2018-05-03 Coating Plasma Industrie Installation de traitement de surface d'un substrat en mouvement sous atmosphere controlee, et son procede de dimensionnement

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3300095A1 (de) * 1982-01-06 1983-07-28 Sando Iron Works Co., Ltd., Wakayama Anlage zum kontinuierlichen behandeln von textilprodukten mit hilfe von niedertemperatur-plasma
US5312647A (en) * 1992-07-24 1994-05-17 Dielectric Coating Industries Method and apparatus of vacuum deposition
US5529631A (en) * 1989-10-30 1996-06-25 Bridgestone Corporation Apparatus for the continuous surface treatment of sheet material
WO1999004411A1 (fr) * 1997-07-14 1999-01-28 The University Of Tennessee Research Corporation Systemes de traitement par plasma et procedes de traitement par plasma
US6054018A (en) * 1998-08-28 2000-04-25 Wisconsin Alumni Research Foundation Outside chamber sealing roller system for surface treatment gas reactors
US6082292A (en) * 1999-01-05 2000-07-04 Wisconsin Alumni Research Foundation Sealing roller system for surface treatment gas reactors
US6528129B1 (en) * 1999-02-15 2003-03-04 Konica Corporation Surface treatment method, production method for ink jet recording medium, and ink jet recording medium

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3300095A1 (de) * 1982-01-06 1983-07-28 Sando Iron Works Co., Ltd., Wakayama Anlage zum kontinuierlichen behandeln von textilprodukten mit hilfe von niedertemperatur-plasma
US5529631A (en) * 1989-10-30 1996-06-25 Bridgestone Corporation Apparatus for the continuous surface treatment of sheet material
US5312647A (en) * 1992-07-24 1994-05-17 Dielectric Coating Industries Method and apparatus of vacuum deposition
WO1999004411A1 (fr) * 1997-07-14 1999-01-28 The University Of Tennessee Research Corporation Systemes de traitement par plasma et procedes de traitement par plasma
US6054018A (en) * 1998-08-28 2000-04-25 Wisconsin Alumni Research Foundation Outside chamber sealing roller system for surface treatment gas reactors
US6082292A (en) * 1999-01-05 2000-07-04 Wisconsin Alumni Research Foundation Sealing roller system for surface treatment gas reactors
US6528129B1 (en) * 1999-02-15 2003-03-04 Konica Corporation Surface treatment method, production method for ink jet recording medium, and ink jet recording medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018078237A1 (fr) 2016-10-27 2018-05-03 Coating Plasma Industrie Installation de traitement de surface d'un substrat en mouvement sous atmosphere controlee, et son procede de dimensionnement
US12125681B2 (en) 2016-10-27 2024-10-22 Coating Plasma Innovation Facility for treating the surface of a moving substrate in a controlled atmosphere, and method for defining the size thereof

Also Published As

Publication number Publication date
WO2008136029A8 (fr) 2009-01-08

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