EP0807591A1 - Tuyère à coussin d'air et dispositif de traitement à chaud d'une bande continue avec des tuyères à coussin d'air - Google Patents

Tuyère à coussin d'air et dispositif de traitement à chaud d'une bande continue avec des tuyères à coussin d'air Download PDF

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Publication number
EP0807591A1
EP0807591A1 EP97106133A EP97106133A EP0807591A1 EP 0807591 A1 EP0807591 A1 EP 0807591A1 EP 97106133 A EP97106133 A EP 97106133A EP 97106133 A EP97106133 A EP 97106133A EP 0807591 A1 EP0807591 A1 EP 0807591A1
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EP
European Patent Office
Prior art keywords
air cushion
nozzle
nozzles
blow
cushion nozzle
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP97106133A
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German (de)
English (en)
Inventor
Ernst Klas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vits Maschinenbau GmbH
Original Assignee
Vits Maschinenbau GmbH
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 Vits Maschinenbau GmbH filed Critical Vits Maschinenbau GmbH
Publication of EP0807591A1 publication Critical patent/EP0807591A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/24—Registering, tensioning, smoothing or guiding webs longitudinally by fluid action, e.g. to retard the running web
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/63—Continuous furnaces for strip or wire the strip being supported by a cushion of gas
    • 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
    • F26B13/101—Supporting materials without tension, e.g. on or between foraminous belts
    • F26B13/104—Supporting materials without tension, e.g. on or between foraminous belts supported by fluid jets only; Fluid blowing arrangements for flotation dryers, e.g. coanda nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
    • B65H2406/112—Means using fluid made only for exhausting gaseous medium producing fluidised bed for handling material along preferably rectilinear path, e.g. nozzle bed for web

Definitions

  • the invention relates to an air cushion nozzle according to the preamble of claim 1 and a device for the heat treatment of a continuously moving web with air cushions according to the preamble of claim 10.
  • Air cushion nozzles are used for the heat treatment of a continuously moving material web, for example for drying a paper web in offset printing, for drying an impregnated paper web or for the heat treatment of a metal web.
  • the air cushion nozzles enable floating and thus contact-free guidance of the material web.
  • air cushion nozzles are arranged transversely to the material web in a device for levitating a material web, with outflow openings being formed between the air cushion nozzles.
  • Each air cushion nozzle consists of a blow box, hereinafter referred to as the housing, and has a pair of slot nozzles, hereinafter referred to as blow slots, with blowing directions parallel or converging.
  • the blown air emerging from the blow slots forms an overpressure area between the web and the nozzle. This overpressure range is called an air cushion.
  • the blown air flows out of the overpressure area through the outflow openings.
  • blow slots are designed with converging blow jet directions
  • the edges of the side walls are inclined to the central plane of the housing and form the blow slots with correspondingly inclined outer edges of a flat sheet covering the housing towards the web.
  • the cover plate is provided with blow openings designed as perforations over its entire length.
  • blow openings designed as perforations over its entire length.
  • the blow openings are therefore called impact jet openings in the following.
  • the impingement jet openings are intended to prevent the blown air from flowing out in the longitudinal direction of the nozzle.
  • the exit area of the blowing air of the two blow slots is at least 50% of the total exit area.
  • DE-C 2615258 describes a further device for the suspended guiding of material webs offset above and below the material web plane and described floating nozzles arranged transversely to the conveying direction.
  • These generic floating nozzles also called air cushion nozzles, each have two slots or rows of holes with blowing directions directed towards one another to form air cushions.
  • the terms slots and rows of holes are summarized below under the term blow slots.
  • blow slots are also delimited by guide surfaces inclined at the angles of inclination, the guide surfaces being formed by side walls of the housing and by a central guide plate.
  • the middle baffle is designed between the blow slots as a perforated plate with impingement jet openings.
  • Possible angles of inclination of the blowing jets and thus their guide surfaces to the horizontal are an angle of 10 to 30 °, preferably 15 to 20 ° for the gently inclined blowing direction and an angle of 45 to 80 °, preferably 60 to 65 ° for the steep blowing direction. specified.
  • blow slots have two rows of holes located opposite one another, the holes being formed on the center of the nozzle by a common guide plate and in the remaining area by edge recesses of legs of the housing which are separated from one another by webs. The legs are under tension and support themselves with the victories on the guide plate.
  • the edge recesses can be designed as semicircular holes.
  • Air cushion nozzles are arranged transversely to the direction of travel in a row of lower air cushion nozzles and in a row of upper air cushion nozzles, namely the lower and the upper air cushion nozzles offset from one another.
  • the mouths of outlet openings of the blowing air of the lower and upper air cushion nozzles pointing to the material web lie on two parallel planes.
  • the air cushion nozzles used there are only suitable for metal strips with the same angle of inclination of the two blowing jets and without additional impingement jet openings between the blowing slots. Due to their greater weight, metal strips are easier to bring into a stable state of suspension than paper webs.
  • air cushion nozzles with particularly good levitation properties must be used for the heat treatment of paper webs, in particular paper webs soaked with paint with up to 130% of their weight.
  • the air cushion nozzles must also have good heat transfer properties, which are guaranteed in the air cushion nozzle known from DE-C 2613 135 by the additional impingement jet openings in the perforated plate between the blow slots.
  • the object of the invention is to develop an air cushion nozzle according to the preamble of claim 1 and a device for heat treatment of a continuous web with air cushion nozzles according to the preamble of claim 10, which reduces the drop in heat transfer to the side edges of the web.
  • the underdrying of the edges should be reduced when drying material webs.
  • An improvement in the heat transfer at the side edges of the web and thus a reduction in the underdrying when drying a paper web can be achieved in that, in an air cushion nozzle according to the invention, the impingement jet openings outside the blow slot, the guide surfaces of which have the smaller inclination angle ⁇ to the horizontal and / or the outlet opening of which the larger ones Has value, are arranged over the entire length of the air cushion nozzle and the middle guide plate has no openings.
  • the impingement jet openings required for a higher heat transfer are concentrated on a narrow edge region of the air cushion nozzle, the blowing air emerging from the impingement jet openings striking the material web next to the air cushion formed by the blowing jets.
  • the impingement jet openings arranged according to the invention ensure an asymmetrical outflow of the blown air from the air cushion better than an arrangement of the impingement jet openings between the blow slots.
  • the impingement jet openings lead to a stable, vibration-free floating behavior of the web.
  • the floating behavior of the web can be improved if the area in which the impingement jet openings are arranged is made as narrow as possible. It is advantageous if the width of the area, i.e. H. the distance between imaginary, parallel to the longitudinal axis of the air cushion nozzle connecting lines of the outer edges of the outer impingement jet openings, according to claim 2 5 to 15%, preferably 6 to 8%, the width of the air cushion nozzle and the length of the area corresponds to the total length of the air cushion nozzle.
  • the middle baffle as a hollow box which extends over the entire length of the air cushion nozzle and has no openings has the advantage of a simple construction. It is possible because no blown air is supplied through the middle baffle.
  • the middle baffle By extending according to claim 5 transverse to the longitudinal direction of the air cushion nozzle, each touching the side portions and the bottom of the box-shaped baffle and arranged alternately one behind the other over the length of the air cushion nozzle, the middle baffle is safely positioned in a simple manner.
  • the sheets also serve to even out the air supply.
  • the exit surface of the impingement jet openings is chosen to be less than 50%, preferably 20 to 40%.
  • the geometric opening degree of the impingement jet openings is 0.5 to 2% and the geometric opening degree of the entire nozzle is 1.7 to 4%.
  • the geometric opening degree of the impingement jet openings is defined as the exit area of the impingement jet openings in relation to the total available drying area, i. H. Length of the dryer times the width of the air cushion nozzles, and the geometric degree of opening of the entire nozzle as the total nozzle exit area of the impingement jet openings and the blow slots in relation to the total available drying area.
  • the ratio of the exit areas of the blow slots should be between 1 and 3.
  • blow slots as edge recesses of the side walls separated from each other by webs, the webs being supported on the middle guide plate, are constant outlet surfaces of the blow slots and thus, even during prolonged operation, a constant floating behavior of the air cushion nozzles.
  • a device for the heat treatment of a continuously moving web with air cushion nozzles according to claim 10 is particularly useful as a floating dryer for paper webs, for. B. in offset printing or within impregnation and coating systems, suitable.
  • a device according to the invention can also be used for the heat treatment of metal strips or other foils.
  • the arrangement of air cushion nozzles transversely to the transport direction in a row of lower air cushion nozzles and in a row of upper air cushion nozzles enables the material web to be guided in a floating manner. Air cushions are generated by the warm treatment air flowing out of the blow slots. The treatment air flows out of the air cushions into exhaust air openings between the lower and upper air cushion nozzles arranged in rows.
  • the lower and upper air cushion nozzles are staggered, which gives the fabric a slightly undulating shape. This undulating course ensures a good floating position of the web. To achieve a good floating position, it is also important to arrange the outer edges of the exit surfaces of the lower and upper air cushion nozzles on two parallel planes.
  • a device according to claim 10 is particularly suitable as a dryer in an impregnation or coating system.
  • Figure 1 shows a longitudinal section through a first treatment chamber of a device for heat treatment of a continuously moving web with air cushion nozzles and
  • Figure 2 shows a corresponding cross section.
  • FIG. 3 shows a cross section of an air cushion nozzle according to the invention and FIG. 4 shows a top view of this air cushion nozzle.
  • FIG. 5 shows schematically a course of the web over a generic air cushion nozzle with internal perforation and FIG. 6 shows a course of the web over an air cushion nozzle according to the invention.
  • FIG. 7 shows the measured heat transfer coefficient ⁇ w as a function of the relative distance from the web edge D of a generic air cushion nozzle with an internal perforation. The measurement was carried out at different levitation distances B.
  • FIG. 8 shows the percentage deviation A of the heat transfer coefficient ⁇ w at the edge compared to the center of the web as a function of the relative distance from the web edge D, likewise at the different levitation distances B.
  • FIGS FIGS. 7 and 8 show representations of the measurement results for an air cushion nozzle according to the invention.
  • a device according to the invention for the heat treatment of a continuously moving material web with air cushion nozzles 1, for example a floating dryer, has a plurality of treatment chambers arranged one behind the other, only the first of which is shown in FIG. 1.
  • FIG. 1 shows a housing 3 standing on supports 2 with an inlet slot 4, which can be seen on the left-hand side, for an essentially horizontal web 5, the transport direction of which is indicated by an arrow 6.
  • the air cushion nozzles 1, as can be seen in FIG. 2, extend transversely to the transport direction.
  • the lower air cushions 1 open on their undersides and the upper air cushion nozzles 1 on their upper sides in supply air channels 7, the supply air channels 7 the lower air cushion nozzles 1 are connected to a lower air distribution box 8 and the supply air channels 7 of the upper air cushion nozzles 1 are connected to an upper air distribution box 9 with nozzle exit surfaces facing upwards.
  • a radial fan 11 is embedded in a ceiling 10 of the housing 3, its motor 12 being arranged above the ceiling 10, its pressure-side outlet 13 protruding into a pressure chamber 14 formed below the ceiling 10 and its suction opening 15 opening into an interior 16 of the treatment chamber.
  • the pressure chamber 14 is connected to the lower air distribution box 8 via four supply channels 17 in the corners of the treatment chamber and to the upper air distribution box 9 also via four supply channels 18 in the corners of the treatment chamber.
  • the essentially free interior 16 of the treatment chamber extends at the top between the pressure chamber 14 and the upper air distribution box 9, on the sides between side walls 19, 20 of the housing 3 and the lateral edges of the air cushion nozzles 1, the supply air channels 7 and the air distribution boxes 8, 9 and between the air cushion nozzles 1 in the form of parallel elongated spaces.
  • Heating registers for heating the blown air are arranged in the upper region of the interior 16. The heating registers are not shown in Figures 1 and 2.
  • An air cushion nozzle 1 has a housing in the form of an elongated box with a base 21, two side walls 22, 23, a central guide plate 24 forming a larger, central region of the upper side of the air cushion nozzle 1, a front end plate (not shown) and a rear end plate 25 , on.
  • blow slots 26 and 27 which run over the entire length of the air cushion nozzle 1, each of which has an inclined guide surface 28, 29 of one of the side walls 22, 23 and an inclined guide surface 30, 31 of the middle guide plate 24 are formed.
  • the each other parallel guide surfaces 28, 30 and 29, 31 of the two blow slots 26, 27 are arranged such that blow jets 32, 33 emerging from the blow slots 26, 27 are directed towards one another.
  • the guide surfaces 28, 30 of the blow slot 26 have a smaller angle of inclination ⁇ to the horizontal than the guide surfaces 29, 31 of the blow slot 27.
  • the outlet opening of the blow slot 26 can also be made larger than that of the blow slot 27.
  • the angle of inclination ⁇ of the guide surfaces 28, 30 of the blow slot 26 is 10 to 30 °, preferably 15 to 20 °, and an angle of inclination ⁇ of the guide surfaces 29, 31 of the blow slot 27 is 45 to 80 °, preferably 60 to 65 ° and the sum of the angles of inclination ⁇ ( ⁇ + ⁇ ) 70 to 90 °.
  • ⁇ is 15 °
  • ⁇ is 60 °.
  • the ratio of the outlet openings of the blow slot 26, the guide surfaces 28, 30 of which may have the smaller angle of inclination ⁇ , to the outlet opening of the blow slot 27 is 1 to 3.
  • the outlet openings are chosen to be the same size, the ratio is 1.
  • the cross section of the air cushion nozzles 1 is essentially rectangular.
  • the floor 21 is level and horizontal. It has a rectangular opening 35 which extends over the entire length of the air cushion nozzle 1, possibly with a narrow edge, for supplying the blown air.
  • the side walls 22, 23 extend in their lower sections perpendicular to the floor 21. To form the guide surfaces 28 and 29 of the blow slots 26 and 27, the upper section of the side wall 22 is at the angle of inclination ⁇ and the upper section of the side wall 23 is below the Tilt angle ⁇ bent towards the center. These sections of the side walls 22, 23 form the edge regions of the upper side of the air cushion nozzle 1 over the entire length of the air cushion nozzle 1.
  • This air cushion nozzle 1 which is particularly suitable for use in floating dryers for impregnation and coating systems, has a length of approximately 2300 mm and a width of approximately 300 mm.
  • the remaining, central area of the upper side of the air cushion nozzle 1 is formed by the central guide plate 24.
  • the central guide plate 24 has the shape of a hollow, elongated box, which is produced, for example, from a correspondingly shaped sheet which is joined together on its longitudinal edges and extends to the end sheets 25 of the air cushion nozzle 1 and has no openings.
  • the middle baffle 24 has a horizontal middle baffle 36, the two baffles 30 and 31 which follow it on both sides at angles of inclination ⁇ and ⁇ , adjoining vertical sections 37 and 38 and a horizontal bottom 39, i. H.
  • the cross section of the middle guide plate 24 is essentially rectangular except for the inclined guide surfaces 30 and 31.
  • the central guide surface 36 has no impingement jet openings 34. To stabilize it, it is somewhat lowered by folds 40, 41 with respect to the outer edges formed by the guide surfaces 30, 31.
  • the middle guide plate 24 projects with outer sections of its guide surfaces 30, 31 under the sections of the side walls 22, 23 forming the guide surfaces 28, 29.
  • the middle baffle plate 24 is positioned by one of the lateral sections 37, 38 and the bottom 39 touching transverse to the longitudinal direction extending sheets 42 and sheets 43, which are alternately, spaced apart, arranged along the length of the air cushion nozzles 1.
  • the sheets 42 are fastened to the base 21 by two tabs 44, extend between the side wall 22 and the section 37 of the middle guide plate 24 and under the middle guide plate 24 to section 38.
  • the sheets 43 are through a.
  • Tab 45 attached to the bottom 21 and extend between the side wall 23 and section 38 of the middle baffle 24 and under the middle baffle 24 to about under the bend 40.
  • the plates also serve to even out the air supply.
  • the impingement jet openings 34 are arranged in a narrow area in one or more rows, for example in one to five rows, over the entire length of the air cushion nozzles 1.
  • the width of the area is 5 to 15%, preferably 6 to 8%, of the width of the air cushion nozzle 1.
  • the impingement jet openings 34 can be designed as round, square or elongated openings, the longer side of the openings being arranged in the longitudinal direction of the air cushion nozzle. Openings arranged in rows offset from one another are also referred to as perforations.
  • the impingement jet openings 34 are designed as a total of approximately 130 bores with a diameter of approximately 10 mm, which are offset in two rows in the section of the side wall 22 forming the guide surface 28.
  • the width of the area in which the impingement jet openings 34 are arranged is 8% of the width of the air cushion nozzle 1. It is identified by b in FIG.
  • the exit area of the impingement jet openings 34 is less than 50%, preferably 20 to 40%, in this example 24%.
  • the geometrical opening degree of the impingement jet openings 34 is 0.5 to 2%, in this example 0.67%, and the geometrical opening degree of the entire nozzle is 1.7 to 4%, in this example 2.8%.
  • the air cushion nozzles 1 of the upper and lower rows are of identical design and are arranged such that the arrangement of the two blow slots 26, 27 in the transport direction is the same in both rows.
  • the blow slots 27 with the larger angle of inclination ⁇ and / or the smaller exit surface are located in the rear in the transport direction.
  • the web 5 is fed to and removed from the device for heat treatment by known, upstream and downstream devices.
  • the web 5 is also removed heated air blowing out the air cushion nozzles 1, whereby the web 5 is guided in a floating manner and at the same time heat is supplied to it. Due to the offset arrangement of the air cushion nozzles 1 of the upper and lower rows, the course of the web 5 is slightly wavy.
  • the blown air is circulated in each treatment chamber of the heat treatment device by means of the radial fan 11. It is fed from the radial fan 11 via the pressure chamber 14, the supply air ducts 17, 18, the air distribution boxes 8, 9, the supply air ducts 7, the air cushion nozzles 1 and is drawn off via the spaces formed between the air cushion nozzles 1 and further parts of the interior 16.
  • the blown air is returned to the radial fan 11, the blown air is heated by heating registers, not shown.
  • blowing air emerging from the blowing slots 26, 27 from the air cushion nozzles 1 in blowing blows 32, 33 directed towards one another is deflected on the web 5.
  • the blown air flows out of the air cushion in one direction, namely via the blow slot 27, the blown air of which has the least resistance to the outflowing air; H. over the blow slot 27 with the larger angle of inclination ⁇ and / or the smaller exit surface.
  • the blown air emerging from the impingement jet openings 34 strikes the material web 5 almost perpendicularly and thus brings about an additional, effective transfer of the heat from the blown air to the material web 5.
  • the blown air from the impingement jet openings 34 also leads to an equalization of the floating distance of the web 5 from the air cushion nozzles 1 while ensuring the outflow essentially via the blowing slots 27.
  • FIGS. 5 and 6 in which floating distances in a generic air cushion nozzle and are sketched in an air cushion nozzle 1 according to the invention.
  • the blown air emerging from the impingement jet openings 34 prevents the sharp drop in the heat transfer coefficient ⁇ w at the edges of the web 5, which occurs in the air cushion nozzles of the generic type (FIGS. 7 to 10).
  • the effect of under-drying on the edge of the generic air cushion nozzles is significantly reduced.
  • the blow slots 26, 27 can be designed as slots or rows of holes.
  • they are designed as edge recesses of the side walls 22, 23 which are separated from one another by webs 46, 47, the webs 46, 47 being supported on the central guide plate 24.
  • the side walls 22, 23 are bent perpendicular to the guide surfaces 28, 29 at their edges adjoining the guide surfaces 28, 29. At these edges they have semicircular recesses with webs 46, 47 in between and touch with webs 46, 47 the guide surfaces 30 and 31 of the middle guide plate 24, to which they are attached at certain intervals.
  • the side walls 22, 23 can be bent so that the webs 46, 47 are supported under a certain pretension on the guide surfaces 30, 31 of the middle guide plate 24.
  • the air cushions 1 arranged in a row are arranged a little, namely so far perpendicular to the transport direction that the air cushion nozzles 1 arranged one behind the other from the holes are arranged Blowing air coming out on adjacent areas of the web 5.
  • the blown air striking the web 5 is thus made uniform over the width of the web.
  • the air cushion nozzles according to the invention and the device according to the invention are suitable for the most varied forms of heat treatment of a web, such as the heat treatment of metal strips or the drying of paper webs.
  • Your preferred use, especially the air cushion nozzles of the example, is the drying of impregnated paper webs in impregnation and coating systems.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Textile Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Drying Of Solid Materials (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP97106133A 1996-05-15 1997-04-15 Tuyère à coussin d'air et dispositif de traitement à chaud d'une bande continue avec des tuyères à coussin d'air Withdrawn EP0807591A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19619547A DE19619547A1 (de) 1996-05-15 1996-05-15 Luftkissendüse und Vorrichtung zur Wärmebehandlung einer kontinuierlich bewegten Warenbahn mit Luftkissendüsen
DE19619547 1996-05-15

Publications (1)

Publication Number Publication Date
EP0807591A1 true EP0807591A1 (fr) 1997-11-19

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EP97106133A Withdrawn EP0807591A1 (fr) 1996-05-15 1997-04-15 Tuyère à coussin d'air et dispositif de traitement à chaud d'une bande continue avec des tuyères à coussin d'air

Country Status (4)

Country Link
US (1) US5829166A (fr)
EP (1) EP0807591A1 (fr)
CA (1) CA2205647A1 (fr)
DE (1) DE19619547A1 (fr)

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CN1817643B (zh) * 2005-02-11 2010-12-29 海德堡印刷机械股份公司 用于支承或引导承印纸张的装置
EP3932672A1 (fr) * 2020-07-01 2022-01-05 Bobst Bielefeld GmbH Séchoir et machine d'impression
AT524962B1 (de) * 2019-02-28 2022-11-15 Ebner Ind Ofenbau Schwebebandofen

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FI105936B (fi) * 1999-03-18 2000-10-31 Valmet Corp Menetelmä ja laite radan kulun stabiloimiseksi paperikoneessa tai vastaavassa
US6564473B2 (en) * 2001-10-22 2003-05-20 The Procter & Gamble Company High efficiency heat transfer using asymmetric impinging jet
US8083895B2 (en) * 2008-04-18 2011-12-27 Honeywell Asca Inc. Sheet stabilization with dual opposing cross direction air clamps
US8088255B2 (en) * 2008-04-18 2012-01-03 Honeywell Asca Inc Sheet stabilizer with dual inline machine direction air clamps and backsteps
US7892399B2 (en) * 2008-05-29 2011-02-22 Honeywell Asca Inc. Local tension generating air stabilization system for web products
DE102008032053A1 (de) * 2008-07-08 2010-01-14 Kaindl Decor Gmbh Verfahren und Vorrichtung zum Trocknen und Vorkondensieren von Imprägnaten, welche aus mit Kunstharz getränktem, folienartigem Bahnmaterial gebildet sind; Melaminharz-freies Imprägnat
CA3172541C (fr) 2009-06-05 2026-04-14 Durr Systems, Inc. Barre flottante infrarouge amelioree
DE102011115257A1 (de) 2011-09-29 2013-04-04 Karlsruher Institut für Technologie Vorrichtung für den Wärme- oder Stoffübergang mit hexagonalen Prallstrahldüsen und Verfahren zur Behandlung von Oberflächenschichten
DE102013112172B3 (de) * 2013-11-06 2014-12-24 Vits Technology Gmbh Trockner für Warenbahnen
US9670616B2 (en) * 2014-12-11 2017-06-06 Georgia-Pacific Consumer Products Lp Active web spreading and stabilization shower
DE102016102093B3 (de) 2016-02-05 2017-06-14 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Durchlaufkühlvorrichtung und Verfahren zum Abkühlen eines Metallbandes
CN112725598A (zh) * 2020-12-31 2021-04-30 无锡戴维环保设备制造有限公司 气悬浮喷嘴及气悬浮退火炉
DE102021200447A1 (de) * 2021-01-19 2022-07-21 Fmp Technology Gmbh Fluid Measurements & Projects Vorrichtung und Verfahren zur Beaufschlagung einer Materialbahn mit einem Gasstrom
DE102023133388A1 (de) * 2023-11-29 2025-06-05 Alexander Wilden Beteiligungen GmbH Bandschwebeofen

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CN1817643B (zh) * 2005-02-11 2010-12-29 海德堡印刷机械股份公司 用于支承或引导承印纸张的装置
AT524962B1 (de) * 2019-02-28 2022-11-15 Ebner Ind Ofenbau Schwebebandofen
AT524962A5 (fr) * 2019-02-28 2022-11-15
US11708621B2 (en) 2019-02-28 2023-07-25 Ebner Industrieofenbau Gmbh Strip flotation furnace
EP3932672A1 (fr) * 2020-07-01 2022-01-05 Bobst Bielefeld GmbH Séchoir et machine d'impression
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DE19619547A1 (de) 1997-11-27
US5829166A (en) 1998-11-03

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