WO2008061378A1 - Procédé et dispositif pour sécher des feuilles stratifiées - Google Patents

Procédé et dispositif pour sécher des feuilles stratifiées Download PDF

Info

Publication number
WO2008061378A1
WO2008061378A1 PCT/CH2007/000059 CH2007000059W WO2008061378A1 WO 2008061378 A1 WO2008061378 A1 WO 2008061378A1 CH 2007000059 W CH2007000059 W CH 2007000059W WO 2008061378 A1 WO2008061378 A1 WO 2008061378A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
drying
blow box
drum
adhesive
Prior art date
Application number
PCT/CH2007/000059
Other languages
German (de)
English (en)
Inventor
Reto Stibi
Original Assignee
Steinemann Technology Ag
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 Steinemann Technology Ag filed Critical Steinemann Technology Ag
Publication of WO2008061378A1 publication Critical patent/WO2008061378A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F26B13/145—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning on the non-perforated outside surface of which the material is being dried by convection or radiation

Definitions

  • the invention relates to a method for drying lamination foils in Wasserlami- ren, in particular for pre-drying the provided with an adhesive laminating.
  • the invention further relates to a device for drying laminating films, in particular the laminating films provided with an adhesive in a drum dryer.
  • a relatively thin film of plastic material is endlessly removed from a roll and passed past an applicator for one-sided coating with an aqueous adhesive.
  • the film coated with the adhesive is then passed over or around a heated and rotatable drum for pre-drying and subjected to a heated air flow.
  • the film should thereby pre-dry so that it adheres firmly under pressure on a sheet.
  • the film is fed into a lamination in a nip between an upper film roll (laminating) and a lower sheet roll (counter-pressure roller).
  • a sheet to be laminated is introduced into the nip and, as a result of the pressurization in the nip, the laminate is formed.
  • the temperature of the heated drum can be adjusted in the prior art.
  • the air with which the moisture contained in the adhesive is to be removed is fed on one side of a blow box, partially guided around the drum in the blow box and sucked off again on the other side of the blow box.
  • the amount of air supplied is constant, which is why the drying process can only be optimized by changing the air and roller temperatures.
  • the temperature adjustment is sluggish and applies only to the currently set machine speed.
  • the invention has for its object to avoid the disadvantages of the prior art and to develop a method for drying laminating in water lamination, in particular for drying provided with an adhesive laminating, the better performance adjustment, consistent drying at a modified machine speed and thus optimal laminate formation possible.
  • the residual moisture of the adhesive should be about 5% for the formation of laminate in a known manner.
  • the object is solved with the features of claim 1.
  • air flow control By regulating the amount of air (air flow control) depending on the amount of moisture to be dissipated, resp.
  • the machine performance is achieved even with very different laminates or machine performance, a high and consistent quality of the laminates.
  • the drying air is performed in recirculation mode and it is both supplied and discharged on both sides of the blow box. If the circulating air reaches the preset humidity limit, part of the circulating air is removed and at the same time the same volume is replaced by fresh air.
  • the volume of circulating air is individually controlled or regulated in both blow boxes.
  • Another variant represents the pure recirculation mode with a dehumidifier unit.
  • a further object of the invention is to provide a device for drying laminating films, in particular the laminating films provided with an adhesive in a drum dryer. This object is achieved with the features of claim 5.
  • the blow box of a drum dryer has a recirculating air guide with an air quantity control.
  • Fig. 1 a laminating machine for water lamination
  • Fig. 2 a drying drum
  • a machine for water lamination includes u. a. a sheet feeder 1, a sheet-aligning and cleaning unit 2, a laminating unit 3 and a separating unit 4.
  • the laminating unit 3 includes, among others, a. an unillustrated Klebercruisingswerk for applying the aqueous adhesive to a film 5, a lamination 6 with a film roll 10 and a bow roller 11 (platen roller), a telescopic transport and a drum dryer 7 with a heated drum 12 and a two-part blow box.
  • the right as well as the left blow box 14, 15 each contain air heaters, not shown, supply and exhaust fans and exhaust and supply air collector.
  • the left blow box 14 serves as a pre-dryer for the wetted film 5 and the right blow box 15 as a post-dryer supports the drying by the drum 12th
  • the drum 12 is heated separately.
  • the temperatures of the drum 12 of the sheet roll 10 and of the hot air dryer 14, 15 can be preselected independently. The temperature is kept constant, as well as the temperature of the drying air.
  • the film 5 is guided from a roll to the glue applicator and then reaches the drum 12, where it is heated and dried. Also for drying and removal of moisture from the aqueous adhesive, the film 5 is acted upon on the side facing away from the drum with an air flow from the blow boxes 14, 15. ⁇ nschliessend the film 5 passes through the lamination 6 and is pressed there in the usual way between the rollers 10, 11 with a sheet, not shown, to the laminate 13.
  • Each blow box has a vacuum area 16 and an overpressure area with interchangeable nozzles 17.
  • the cross sections of the nozzles 17 are different, in particular in the region of the left blow box 14 (pre-drying) to allow a different throttling of the air flow or the air velocity.
  • At constant static pressure results in the nozzles 17 a uniform exit velocity of the warm drying air.
  • the heated air is passed in variierbarer amount on the overpressure area and the nozzles 17 on the film surface and absorbs moisture from the adhesive on the film 5.
  • the so humidified air passes between the individual nozzles in the negative pressure region 16 and is collected in the exhaust air collector and partially removed depending on the moisture content and replaced by fresh air, fed to the Zu Kunststoffsammler and thereby reheated.
  • Fans convey the air from the Zu Kunststoffsammler separated into the blow box 14, 15.
  • the temperature of the drum 12 is kept constant and the amount of drying air required depending on the amount of moisture to be dissipated and / or engine power controlled or regulated.
  • the laminating machine has a modular construction, as can be seen from FIG.
  • the rollers 10, 11 can be exchanged quickly and with little effort. This is possible on the one hand by the modular design of the machine and on the other hand by laterally split bearings of the rollers.
  • the roll change can be horizontal or vertical. In most cases, only at each roller bearing to remove the upper bearing half shell and to move the corresponding part of the sheet metal frame of each module.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé permettant de sécher des feuilles stratifiées (5) dans le cadre de la stratification faisant appel à de l'eau, en particulier pour sécher des feuilles stratifiées (5) munies d'un adhésif, ledit procédé permettant une meilleure adaptation du rendement, un séchage constant et par conséquent une formation optimale de produit stratifié. A cet effet, la quantité d'air de séchage requise (régulation quantité d'air) est régulée de manière automatique en fonction de la quantité d'humidité à évacuer ou en fonction de la puissance de la machine.
PCT/CH2007/000059 2006-11-24 2007-02-07 Procédé et dispositif pour sécher des feuilles stratifiées WO2008061378A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH19022006 2006-11-24
CH1902/06 2006-11-24

Publications (1)

Publication Number Publication Date
WO2008061378A1 true WO2008061378A1 (fr) 2008-05-29

Family

ID=38282808

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2007/000059 WO2008061378A1 (fr) 2006-11-24 2007-02-07 Procédé et dispositif pour sécher des feuilles stratifiées

Country Status (1)

Country Link
WO (1) WO2008061378A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2381199A2 (fr) 2010-04-23 2011-10-26 Steinemann Technology AG Procédé et dispositif destinés au séchage de feuilles de laminage
DE102010037373A1 (de) 2010-04-23 2011-10-27 Steinemann Technology Ag Verfahren und Vorrichtung zum Trocknen von Laminierfolien

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB773908A (en) * 1954-01-12 1957-05-01 Borje Valentin Leckner Paper-drying apparatus
US3284920A (en) * 1964-01-17 1966-11-15 Valmet Oy Apparatus for drying web material
US3416237A (en) * 1965-12-23 1968-12-17 Paper Board Printing Res Ass Method and apparatus for drying flexible material such as paper and board formed from cellulosic fibrous material
US3447247A (en) * 1967-12-18 1969-06-03 Beloit Corp Method and equipment for drying web material
US3541697A (en) * 1968-08-01 1970-11-24 Aer Corp High velocity through-drying system
US5425852A (en) * 1993-12-27 1995-06-20 James River Paper Company, Inc. System for reducing blistering of a wet paper web on a yankee dryer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB773908A (en) * 1954-01-12 1957-05-01 Borje Valentin Leckner Paper-drying apparatus
US3284920A (en) * 1964-01-17 1966-11-15 Valmet Oy Apparatus for drying web material
US3416237A (en) * 1965-12-23 1968-12-17 Paper Board Printing Res Ass Method and apparatus for drying flexible material such as paper and board formed from cellulosic fibrous material
US3447247A (en) * 1967-12-18 1969-06-03 Beloit Corp Method and equipment for drying web material
US3541697A (en) * 1968-08-01 1970-11-24 Aer Corp High velocity through-drying system
US5425852A (en) * 1993-12-27 1995-06-20 James River Paper Company, Inc. System for reducing blistering of a wet paper web on a yankee dryer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2381199A2 (fr) 2010-04-23 2011-10-26 Steinemann Technology AG Procédé et dispositif destinés au séchage de feuilles de laminage
DE102010037373A1 (de) 2010-04-23 2011-10-27 Steinemann Technology Ag Verfahren und Vorrichtung zum Trocknen von Laminierfolien

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