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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
• • 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
  • F26B13/108—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials using one or more blowing devices, e.g. nozzle bar, the effective area of which is adjustable to the width of the material
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
  • F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D2252/00—Sheets
  • B05D2252/02—Sheets of indefinite length
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
  • B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
  • B05D3/0466—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being a non-reacting gas
  • B05D3/0473—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being a non-reacting gas for heating, e.g. vapour heating
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
  • B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
  • B05D3/0466—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being a non-reacting gas
  • B05D3/048—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being a non-reacting gas for cooling

Definitions

• the invention relates to a device for treating sheet material, in particular plates, film or film, wherein the device has at least one strip-shaped or stabformigen strips arranged transversely to the longitudinal direction of the sheet material, wherein the sheet material is moved past the strip in the longitudinal direction.
• the invention also relates to a method for treating sheet material with a device according to the invention.
• An object of the invention is to provide an improved apparatus and method for treating sheet material.
• a device for treating flat material in particular plates, film or foil, is provided for this purpose, the device having at least one strip-shaped or bar-shaped strip arranged transversely to the longitudinal direction of the flat material, wherein the flat material is moved past the strip in the longitudinal direction wherein the strip at least over part of its outer surface facing the sheet material consists of porous, fluid-permeable metal foam and wherein means are provided for conveying a treatment fluid through the metal foam towards the sheet material.
• An at least partial formation of the strip of porous, fluid-permeable metal foam makes it possible to direct a liquid or gaseous treatment fluid through the metal foam extremely uniformly in the direction of the sheet material.
• the disadvantage of individual nozzles can be avoided, in which, as a rule, a spatially uneven flow distribution is always present.
• an open-pore metal foam constant flow conditions can be achieved over the entire surface of the strip. This is extremely advantageous in the case of very sensitive sheet material, for example coated plates, film or foil.
• the strip is designed as a tube, wherein the tube consists of the metal foam at least over part of its outer circumference.
• the treatment fluid When providing a pipe, the treatment fluid may be supplied in the interior of the pipe and then discharged radially outward through the pipe.
• the tube is made entirely of metal foam.
• a part of the outer circumference of the tube is formed gas-impermeable.
• the metal foam can be rendered gas-impermeable, for example, by blending, over-turning or even coating, for example with adhesive.
• the metal foam is a stainless steel metal foam, in particular of a chromium-nickel stainless steel.
• the device according to the invention can also be used in corrosive environments.
• the metal foam between 45% and 80% nickel and between 15% and 45% chromium.
• the metal foam comprises carbon, copper, iron, molybdenum, manganese, phosphorus and / or zinc, each with a percentage of less than 1%.
• the metal foam has a porosity of 90% or more.
• the porosity refers to the voids in the foam metal.
• a porosity of 90% means that 90% of the total volume consists of air or cavities and only 10% of solid.
• the metal foam has an average pore size in the range between 0.3 mm and 2.5 mm.
• Metal foam has a more or less statistical distribution of the pore size, so that only an average pore size can be specified.
• the device is designed as a lock.
• inventive devices can advantageously be used as non-contact working locks especially where a treatment room to be separated from the environment and where the surface material to be treated when passing the lock is still extremely sensitive.
• a lock according to the invention can be extremely achieve uniform flow distribution, so that a flat material to be treated is not or only slightly affected by the lock gas.
• a treatment space is provided, wherein the at least one strip is arranged in the treatment space.
• the device according to the invention is particularly suitable for the aftertreatment of laminar materials, for example by means of liquid or gaseous treatment fluids.
• a very uniform flow of the treatment fluid in the direction of the sheet material to be treated can be achieved, so that a very uniform surface finish of the treated sheet material results.
• the means for conveying a treatment fluid for conveying cold gas or hot gas are formed.
• the strip is designed as a tube and consists of metal foam at least over 180 ° of its outer circumference.
• the rod can be used for the treatment of sheet material, which is guided arcuately along its outer circumference.
• the sheet material is web-shaped and is deflected along the outer circumference of the strip and changes its direction.
• a plurality of strips are arranged at a distance, wherein the sheet material is carried out between the strips.
• the invention also relates to a method for treating flat material, in particular plates, film or foil, with a device according to the invention, in which the movement of a surface material to be treated past is provided on at least one strip-shaped or rod-shaped strip arranged transversely to the longitudinal direction of the flat material, wherein the strip is made of porous, gas-permeable metal foam over at least part of its outer surface facing the sheet-like material, and in which the conveying of a treatment fluid through the metal foam in the direction of the sheet material is provided.
• FIG. 1 is a schematic representation of a device according to the invention for treating sheet material according to a first embodiment
• FIG. 2 is a schematic representation of a device according to the invention according to a second embodiment
• FIG. 3 is a schematic representation of a portion of the device of FIG. 1,
• FIG. 4 shows a schematic illustration of a further section of the device of FIG. 1,
• FIG. 5 shows a schematic representation of a device according to the invention designed as a lock
• FIG. 6 is a schematic representation of another device designed as a lock according to the invention.
• Fig. 7 is a schematic representation of another device according to the invention.
• Fig. 8 is a schematic representation of another device according to the invention.
• FIG. 1 shows schematically a device 10 according to the invention for treating sheetlike material, wherein a sheet-like film 12 is treated or coated by the illustrated device 10, dried and then further treated.
• the film 12 is wound on a storage drum 14 and is fed to a coating device 16.
• the coating apparatus 16 applies an initially liquid material to the film 12, which then forms a liquid film on the upper side of the film 12.
• a first dryer 18 and then a floating dryer 20 Immediately after the application device is followed by a first dryer 18 and then a floating dryer 20.
• the film 12 is dried from both sides.
• Upstream and downstream of the floating dryer 20 locks 22 and 24 according to the invention are arranged.
• the sluices 22 and 24 each have two tubes 26 made of metal foam, through which sluice gas is conveyed in the direction of the film 12.
• the Tubes 26 are each arranged in a lock chamber, from which the lock gas is then sucked off again.
• the lock 24 has four tubes of metal foam 26, wherein two of the tubes 26 are arranged above and two of the tubes 26 below the film 12. Above and below the film 12 each have a lock chamber is arranged, from which the lock gas is then sucked off again.
• an aftertreatment device 28 Downstream of the floating dryer 20, an aftertreatment device 28 is provided, in which the film 12 is aftertreated by means of treatment liquid.
• the device 28 has a plurality of tubes 30, which each consist of gas-permeable metal foam and through which a treatment liquid is conveyed in the direction of the film 12.
• the tubes 30 are disposed within a tank 32 in which the treatment liquid is also located.
• a hot gas treatment device 34 Downstream of the device 28, a hot gas treatment device 34 according to the invention is provided.
• the device 34 has disposed within a treatment chamber 36 tubes 38 around which the film 12 is deflected in each case and which consist of gas-permeable metal foam. Through the tubes 38 hot gas is conveyed in the direction of the film 12. The film 12 is thereby kept at a distance from the tubes 38, even if this is not visible in the illustration of FIG. As can be seen, the film 12 is deflected around the tubes 38 such that both the bottom and the top of the film 12 are treated by hot gas, which very evenly over at least a portion of the outer circumference of the tubes 38 in the direction of the film 12th is encouraged. The gas enters the treatment room 36, from which it is then sucked off again.
• the film 12 After leaving the treatment chamber 36, the film 12 is wound onto a storage drum 40.
• the numeral 42 denotes a device according to the invention, which can be used as an alternative to the device 28.
• the device 42 is intended for treatment with both gaseous and liquid treatment fluids.
• the device 42 has at its entrance two sheath tubes 26, which promote lock gas in the direction of the film 12 and prevent the ambient air from entering a treatment chamber 44 of the device.
• two lock tubes 26 made of metal foam are arranged at the outlet of the treatment space 44, through which also lock gas is conveyed in the direction of the film 12 and which also prevent ambient air from entering the treatment space 44.
• a plurality of tubes 46 made of metal foam are arranged below the film 12, is conveyed by the treatment gas in the direction of the underside of the film 12.
• FIG. 2 schematically shows a device 48 according to the invention, which includes the device 28 of FIG. 1 already explained.
• a device 48 Upstream and downstream of the treatment tank 32 of the device 28, there are provided sluices 50 and 52, respectively, through which the film 12 is introduced into and out of the treatment tank 32.
• the locks 50, 52 each have two above and two below the film 12 arranged pipes 26 made of metal foam, is conveyed through the lock gas in the direction of the top or bottom of the film 12.
• the tubes 26 are each arranged within a lock chamber, from which the lock gas is sucked.
• the sluices 50, 52 prevent ambient air from entering the treatment tank 32.
• FIG. 3 shows the device 42 of FIG. 1 again, wherein a repetition of the explanation of the device 42 is dispensed with.
• FIG. 4 schematically shows the section 34 of the device 10 of FIG. 1. Again, a further explanation of the structure and the function of the device 34 is dispensed with.
• FIG. 5 schematically shows a device 60 according to the invention designed as a lock.
• two tubes 26 made of metal foam are arranged above and below the film 12, in each case.
• the lower half 62 of the outer circumference of the tubes 26 is gas-permeable.
• the pores of the metal foam of the tubes 26 are closed. This can be done for example by grinding or coating the metal foam. Gas from the interior of the tube 26 thereby exits only over an angular range of 180 ° of the outer periphery, and only in the direction of the film 12. Due to the numerous open pores of the metal foam in section 62 is a very uniform flow of the sluice gas in the direction achieved the film 12.
• the tubes 26 are arranged in an upper lock chamber 66 and a lower lock chamber 68, which is bounded on the one hand by the film 12 and on the other hand by a respective porous, gas-permeable metal plate 70.
• the metal plates 70 may also be made of metal foam.
• the lock spaces 66, 68 bounded by the side walls of a double hood 72 and 74, which extends to just before the top or the bottom of the film 12. In the cavity between the walls of the double hoods 72, 74, a further flow space is created through which also lock gas can be sucked.
• Such a construction of the lock 60 allows a secure seal against the ingress of ambient air in a subsequent treatment room of a dryer 76. Nevertheless, the film 12 is not touched in the lock and not acted upon by strong and especially uneven Schleusengasströmungen, because of the numerous open pores of the sections 62 of the tubes 26 a very uniform gas lock gas flow in the direction of the film 12 can be achieved.
• the dryer 76 is designed as a floating dryer and has above and below the film 12 each have a porous, gas-permeable metal plate 78 made of metal foam. Above and below the metal plates 78, a flow space is in each case arranged through which gas flows parallel to the metal plates 78. As a result of the Venturi effect, gas is sucked in and out of a respective drying space 80 above the film or a drying space 82 below the film 12.
• FIG. 6 shows schematically a further device 90 according to the invention, which is designed as a lock and which is arranged upstream of a dryer 92, which is not explained in greater detail.
• the lock 90 has four tubes 26 made of metal foam, in each case only an angular range of 180 °, which faces the film 12, is gas-permeable.
• the tubes 26 are identical to those explained with reference to FIG. 5 tubes 26 formed. Nitrogen is conveyed through the tubes 26 as sluice gas in the direction of the film 12. Between the two above the film 12 arranged tubes 26, a metal foam plate 94 is disposed and between the arranged below the film 12 tubes 26 is also a metal foam plate 96 is arranged. The metal foam plates 94, 96 are gas permeable. Above the metal foam plate 94 or below the metal foam plate 96, gas is sucked off.
• the lock 90 of FIG. 6 is slightly simpler than the lock 60 of FIG. 5, since the double hoods 72, 74 are replaced by a single-walled hood 98, 100.
• FIG. 7 shows schematically a device 110 according to the invention, which is designed as a hot gas treatment device.
• the device 1 10 has a treatment chamber 1 12, in which a total of four, each consisting of metal foam tubes 1 14, 1 16, 1 18 and 120 are arranged.
• the tubes 1 14, 1 16, 1 18 and 120 are each designed to be gas permeable either over its entire outer circumference or only over the wrap angle of the film to be treated 12.
• the film to be treated 12 is meandering around the Tubes 1 14, 1 16, 1 18 and 120 around and is deflected at each tube 1 14, 1 16, 1 18 and 120 by a little more than 180 °.
• the deflection of the film 12 is carried out without contact, since from the interior of the tubes 1 14, 1 16, 1 18, 120 each hot gas is conveyed radially outward in the direction of the film 12.
• each hot gas is conveyed radially outward in the direction of the film 12.
• the film 12 can thereby be subjected to a graduated temperature treatment, wherein, as was explained, the film 12 is thereby guided in a contactless manner through the hot gas streams from the pipes 1 14, 16, 18 and 120 through the treatment space 12.
• FIG. 8 shows a further device 130 according to the invention, which is provided for the treatment of the web material, not shown, with treatment liquid.
• the device 130 has numerous tubes 132 through which treatment liquid is delivered radially outwards.
• the tubes 132 are each made of open-pored metal foam, so that the treatment liquid is discharged very evenly radially outwardly beyond the outer circumference of the tubes 132.
• a sheet material to be treated which is not shown in FIG. 8, is appropriately threaded between the tubes 132, and then the tubes 132 are placed inside a treatment tank 134. Treatment liquid then flows radially outward through the walls of the tubes 132 and thereby guides the web-like material to be treated non-contact and meandering through the processing tank 134.
• the web-like material can thereby be continuously conveyed through the processing tank 134 and become evenly from both sides with the treatment liquid applied.
• the porosity as well as the pore size of the tubes 132 made of metal foam are adjusted to the viscosity or to the particle size of the treatment liquid, so that the desired flow conditions are achieved.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Coating Apparatus (AREA)
• Physical Or Chemical Processes And Apparatus (AREA)
• Paper (AREA)
• Drying Of Solid Materials (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=51794865

Family Applications (1)

Country Status (7)

Families Citing this family (3)

Citations (4)

Family Cites Families (19)

• 2013
  • 2013-11-13 DE DE201310223151 patent/DE102013223151A1/de not_active Ceased
• 2014
  • 2014-10-22 EP EP14789226.9A patent/EP3069093A1/de not_active Withdrawn
  • 2014-10-22 US US15/036,305 patent/US20160279659A1/en not_active Abandoned
  • 2014-10-22 CN CN201480071771.8A patent/CN106537074A/zh active Pending
  • 2014-10-22 JP JP2016530117A patent/JP2016538518A/ja active Pending
  • 2014-10-22 WO PCT/EP2014/072595 patent/WO2015071059A1/de active Application Filing
  • 2014-10-22 KR KR1020167015558A patent/KR20160132361A/ko not_active Application Discontinuation

Patent Citations (4)

Non-Patent Citations (1)

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