EP2550111A1 - Vorrichtung und verfahren zum beidseitigen auftragen eines mediums auf eine bewegte faserstoffbahn - Google Patents
Vorrichtung und verfahren zum beidseitigen auftragen eines mediums auf eine bewegte faserstoffbahnInfo
- Publication number
- EP2550111A1 EP2550111A1 EP10798337A EP10798337A EP2550111A1 EP 2550111 A1 EP2550111 A1 EP 2550111A1 EP 10798337 A EP10798337 A EP 10798337A EP 10798337 A EP10798337 A EP 10798337A EP 2550111 A1 EP2550111 A1 EP 2550111A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fibrous web
- liquid
- moving fibrous
- web
- pasty medium
- 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.)
- Granted
Links
Classifications
-
- 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
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
-
- 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
- B05C1/04—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 for applying liquid or other fluent material to work of indefinite length
- B05C1/08—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 for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0813—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 for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for supplying liquid or other fluent material to the roller
-
- 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
- B05C1/04—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 for applying liquid or other fluent material to work of indefinite length
- B05C1/08—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 for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0826—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 for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
- B05C1/0834—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 for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets the coating roller co-operating with other rollers, e.g. dosing, transfer rollers
-
- 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
- B05C1/04—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 for applying liquid or other fluent material to work of indefinite length
- B05C1/08—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 for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/086—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 for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line a pool of coating material being formed between a roller, e.g. a dosing roller and an element cooperating therewith
- B05C1/0865—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 for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line a pool of coating material being formed between a roller, e.g. a dosing roller and an element cooperating therewith the cooperating element being a roller, e.g. a coating roller
-
- 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
- B05C1/04—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 for applying liquid or other fluent material to work of indefinite length
- B05C1/08—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 for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/086—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 for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line a pool of coating material being formed between a roller, e.g. a dosing roller and an element cooperating therewith
- B05C1/0869—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 for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line a pool of coating material being formed between a roller, e.g. a dosing roller and an element cooperating therewith the work contacting the pool
-
- 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
- B05C1/04—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 for applying liquid or other fluent material to work of indefinite length
- B05C1/08—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 for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0873—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work
-
- 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
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
- B05C11/045—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by the blades themselves
-
- 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
- B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
- B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
- B05C3/12—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length
- B05C3/125—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length the work being a web, band, strip or the like
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
- D21H23/42—Paper being at least partly surrounded by the material on both sides
Definitions
- the invention relates to a device for applying a liquid or pasty medium on both sides of a moving fibrous web, in particular paper, banknote paper, cardboard or packaging paper web, with a first applicator roll and a second applicator roll, which extend at least over the width of the moving fibrous web and forming a roll nip having a roll entry region through which the moving fibrous web is passable, and having a liquid or pasty medium feeder in the roll entry region of the two applicator rolls, forming a liquid sump in the roll entry region of the two applicator rolls during operation of the apparatus; through which the moving fibrous web runs, and by means of which the level of the liquid sump is adjustable.
- the invention relates to a method for applying a liquid or pasty medium on both sides of a moving fibrous web, in particular paper, banknote paper, cardboard or packaging paper web.
- a moving fibrous web in particular paper, banknote paper, cardboard or packaging paper web.
- Such a device serves to impregnate these in the production and / or finishing of a fibrous web with a liquid, for example with a glue suspension or the like. This would like to change or improve certain properties of the fibrous web.
- Banknotes are usually glued with PVA.
- the exposure time is decisive.
- at least one immersion bath is arranged underneath a crimping press in the manufacture and / or refinement of banknote papers ("immersion bath operation").
- immersion bath operation In the state of the art, at least one immersion bath is arranged underneath a crimping press in the manufacture and / or refinement of banknote papers (“immersion bath operation").
- immersion bath operation In the state of the art, at least one immersion bath is arranged underneath a
- a device for Sumbadbad ist in which a liquid sump is formed between two support rollers when using a metering device for the medium.
- the metering device is adjustable so that the level of the liquid sump remains constant or approximately constant.
- the application of the liquid or pasty medium to the fibrous web takes place in that the fibrous web is guided through this liquid sump and the nip between the support rollers. Since the level is usually limited by the smallest roller diameter, the exposure time of the liquid or pasty medium can be increased to the fibrous web only by the fact that the speed of the fibrous web is reduced.
- the immersion bath device is filled with the liquid or pasty medium, so that the Einwirkmother or contact time of the liquid or pasty medium extended to the fibrous web or the web speed can be increased.
- the immersion bath device preferably has a level height for the liquid or pasty medium in the range from 100 to 2,000 mm, preferably from 200 to 1, 000 mm, in particular from 300 up to 800 mm, on.
- the immersion bath apparatus is preferably formed as a feed device for the liquid sump formed in the roll entrance area of the nip of the two rolls.
- the dip bath apparatus is preferably designed in two parts and also preferably has a preferably adjustable nozzle gap comprising two preferably parallel spaced nozzle walls, through which the moving fibrous web is feasible and can be opened for threading the moving fibrous web. The initial threading of the fibrous web into the preferably mirror-image immersion bath device takes place in a favorable manner along the path of the moving fibrous web.
- the nozzle gap can dive into the liquid sump, but also be spaced from this.
- the nozzle gap of the immersion bath apparatus preferably has a preferential wise adjustable gap width in the range of 0.2 to 3 mm, preferably from 0.4 to 1, 5 mm, in particular from 0.5 to 1 mm.
- the setting direction of the gap width may be the same as the moving direction for opening the immersion bath apparatus.
- the use of moving parts in the outlet area, ie in the area of the nozzle gap can completely disregard the use of moving parts.
- the setting of the nozzle gap of the immersion device is preferably carried out by means of at least one Spindelhubgetriebes and associated Lenkereinrich- device.
- the gap width of the nozzle gap can be adjusted very accurately and continuously.
- the residence time of the liquid or pasty medium in the dip bath apparatus and the level of the liquid sump in the roll inlet region of the two applicator rolls are adjustable.
- the two spaced apart in the operation of the device and the nozzle gap forming nozzle walls are preferably rigid. This deflection-resistant construction with a uniform outflow across the width of the moving fibrous web ensures a defined outlet geometry continuously and reliably.
- At least one of the two nozzle walls spaced apart during operation of the device and forming the nozzle gap is preferably flexible on the outlet side.
- the outlet side flexibly executed nozzle wall, so the resilient seal of the outlet gap on the outlet side advantageously preferably at least one preferably biased Bend blade or a preferably biased rubber lip, in particular a windscreen wiper lip, a water extractor or the like.
- any errors in the moving fibrous web without their demolition are allowed to pass.
- the flow rate can be minimized because in combination with the gap adjustment and the flow, which in a known manner depending on the level height and the viscosity of the liquid or pastö- sen medium is to be adjusted continuously by changing the bias of the flexible sealant.
- an operation, ie a driving manner of the device with a mini-gap is possible, and this with a passage of errors in the moving fibrous web and a low, preferably no wear of the sealant.
- the moving fibrous web in the region of the dipping bath device preferably has a path angle to the vertical of up to 90 °, preferably of up to 45 °, in particular of up to 5 °.
- the invented device can be used in a wide geometrical application window. Virtually any trajectory for the moving fibrous web can be real . and the inventive device can be retrofitted without major problems on existing machines for producing a fibrous web from at least one pulp suspension.
- the output of the invention is in a method for two-sided application of a liquid or pasty medium on a moving fibrous web, in particular paper, banknote paper, cardboard or packaging paper web, with a first applicator roll and a second applicator roll, extending at least over the width of the moving fibrous web extend and which form a nip having a roll inlet region, through which the moving fibrous web is carried, and with a supply means for the liquid or pasty medium in the roll inlet region, wherein in operation of the device, a liquid sump is formed in the roll inlet region, through which moving fibrous web runs and by means of which the level of the liquid sump is adjusted, according to the invention solved in that the moving fibrous web - seen in the web running direction of the moving fibrous web - before the liquid sump and the nip d urch at least one and the liquid or pasty medium receiving immersion bath device is performed.
- the object of the invention is again completely solved in this way and it results in the aforementioned advantages of the invention
- the level of the liquid sump in the roll inlet region of the two applicator rolls is preferably regulated by means of the dipping bath device.
- the immersion bath device preferably has a preferably adjustable nozzle gap, by means of which the level of the liquid sump in the roll inlet region of the two application rolls is regulated.
- the contact time of the liquid or pasty medium on the moving fibrous web is preferably in the range of 0.04 to 4 s, preferably 0.08 to 2 s, in particular of 0.12 to 1.6 seconds.
- the liquid or pasty medium preferably comprises at least PVA.
- PVA is the abbreviation for polyvinyl alcohol, sometimes referred to as PVOH.
- Polyvinyl alcohol is an artificial, thermoplastic and water-soluble plastic made by hydrolysis of polyvinyl ester, usually the accessible polyvinyl acetate.
- the direct synthesis route is not possible. It is resistant to oils, greases and solvents and is outstandingly layer-forming, emulsifying and adhesive. It also has high tensile strength and flexibility.
- the device according to the invention for applying a liquid or pasty medium to a moving fibrous web on both sides is suitable in excellent gender manner for use in a machine for producing a fibrous web, in particular a paper, banknote paper, cardboard or packaging paper web, from at least one pulp suspension.
- FIG. 1 shows a cross section through a preferred embodiment of a device according to the invention for applying a liquid or pasty medium on both sides of a moving fibrous web
- FIG. 2 shows a schematic illustration of a preferred embodiment of a dip bath apparatus of a device according to the invention in the opened state
- FIG. 3 is a schematic and sectioned detail of a
- Nozzle gap of a preferred embodiment of a dip device of a device according to the invention is a schematic representation of the alternative mode of operation "Sumbadbad rempli";
- Figure 5 is a schematic representation of a preferred embodiment of an adjustment mechanism for the nozzle gap of a device according to the invention.
- FIG. 6 to 10 are schematic representations of preferred
- FIG. 1 shows a cross-section through a device 1 for application of a liquid or pasty medium 2 on both sides to a moving fibrous web 3.
- the illustrated fibrous web may, for example, be a banknotesheet.
- a deflection roller 4 and two application rollers, a first application roller 5.1 a and a second application roller 5.2, are positioned relative to the moving fibrous web 3 in such a way that it enters a nip N (nip) formed by the two application rollers 5.1, 5.2.
- the two applicator rollers 5.1, 5.2 thus extend at least over the width B (arrow) of the moving fibrous web 3 and the nip N forms a roller inlet region 6, through which the moving fibrous web 3 is feasible.
- the apparatus 1 has a feed device 7 for the liquid or pasty medium 2 in the roll inlet region 6, wherein during operation of the device 1, a liquid sump 8 in the roll inlet region 6 of the two applicator rollers 5.1, 5.2 forms, through which the moving fibrous web. 3 runs, and by means of which the level 9 of the liquid sump 8 is adjustable.
- the level height 12 of the liquid sump 1 1 is kept constant or approximately constant by means of a feed device (arrow), not shown, according to the consumption.
- the immersion bath apparatus 10 has a level height 12 for the liquid or pasty medium 2 in the range from 100 to 2,000 mm, preferably from 200 to 1, 000 mm, in particular from 300 to 800 mm. Moreover, it is as the feeding device 7 for in the roll inlet region 6 of the nip N of the formed two rollers 5.1, 5.2 formed liquid sump 8.
- the nozzle gap 13 of the immersion bath apparatus 10 also has a preferably adjustable gap width s in the range from 0.2 to 3 mm, preferably from 0.4 to 1.5 mm, in particular from 0.5 to 1 mm (see FIG. ,
- the immersion bath apparatus 10 is also arranged such that the nozzle gap 13 projects into the liquid sump 8 in the roll inlet region 6 of the two application rolls 5.1, 5.2.
- the moving fibrous web 3 After passing through the dipping apparatus 10, the moving fibrous web 3 exits through the die gap 13 at the lower end of the dipping apparatus 10 and into the liquid sump 8 in the roll inlet region 6 of the two applicator rolls 5.1, 5.2.
- the roll nip N through which the moving fibrous web 3 subsequently runs, forms a press nip or dosing nip.
- the moving fibrous web 3 has, in the region of the immersion bath apparatus 10, a path angle A to the vertical V of up to 90 °, preferably of up to 45 °, in particular of up to 5 °, (indicated schematically).
- the fibrous web 3 has an exemplary web angle A to the vertical V of about 3 °.
- FIG. 2 shows a schematic representation of a preferred embodiment of a dip bath apparatus 10 of a device 1 according to the invention for applying a liquid or pasty medium 2 on both sides of a moving fibrous web 3 in the open state.
- the dip bath apparatus 10 is therefore designed in two parts and has a preferably adjustable nozzle gap 13, which comprises two spaced nozzle walls 14.1, 14.2, through which the moving fibrous web 3 can be carried out and which can be opened for threading the moving fibrous web 3.
- FIG. 3 shows a schematic and sectional detailed illustration of a nozzle gap 13 of a preferred embodiment of a dip bath apparatus 10 of a device 1 according to the invention for applying a liquid or pasty medium 2 to a moving fibrous web 3 on both sides.
- the immersion bath device 10 has a preferably adjustable nozzle gap 13, which comprises two spaced nozzle walls 14.1, 14.2, through which the moving fibrous web 3 can be carried out.
- the setting of the rigid nozzle gap 13 takes place here by the displacement of the two cranked nozzle exit plates 15.1, 15.2.
- this can also be adjusted by means of a device (not shown) known to a person skilled in the art (double arrows).
- the nozzle gap 1 3 of the immersion bath device 10 also has an adjustable gap width s in the range from 0.2 to 3 mm, preferably from 0.4 to 1.5 mm, in particular from 0.5 to 1 mm (see FIG ).
- the illustrated device 1 can advantageously be operated without a conversion or a change in the web guide as a size press with sump operation or as a film press with immersion bath.
- FIG. 5 shows a schematic representation of a preferred embodiment of an adjusting mechanism 17 for the nozzle gap 13 of a device 1 according to the invention for applying a liquid or pasty medium 2 to a moving fibrous web 3 on both sides.
- the adjustment of the nozzle gap 13 of the immersion bath apparatus 10 takes place by means of two screw jacks 18 and associated handlebars 19 which each act together on a nozzle wall 14.1, 14.2.
- the entire adjusting mechanism 17 in turn is mounted on a frame 20 of the device 1. Because of these two screw jacks 18, the two nozzle walls 14.1, 14.2 can be moved or adjusted independently of each other, so that it is possible to directly influence the properties of the nozzle gap.
- FIG. 6 shows schematic representations of preferred embodiments of nozzle columns 13 of inventive devices 1 for two-sided application of a liquid or pasty medium 2 on a moving fibrous web 3.
- the "rigid" nozzle gap 13 of the immersion bath apparatus 10 has a preferably adjustable gap width s in the range from 0.2 to 3 mm, preferably from 0.4 to 1.5 mm, in particular from 0.5 to 1 mm (cf. FIG. 3).
- one of the two nozzle walls 14.1, 14.2 which are at a distance from one another during operation of the device 1 and form the nozzle gap 13 is designed to be flexible on the outlet side.
- both the nozzle gap forming nozzle walls can be made flexible on the outlet side.
- the nozzle wall 14.1 which is flexible on the discharge side, comprises a preferably biased Bend blade 21 together with holder 22, which rests against the other nozzle wall 14.2 when the device 1 is at rest and which in the operating state of the device 1 the other opposing nozzle wall 14.2 forms an open nozzle gap 13.
- the respective Bend blade 21 can be pretensioned (compare FIG. 7) or relaxed (compare FIG. 8).
- the outlet side flexibly running nozzle wall 14.1 each comprise a preferably biased rubber lip 23, in particular a windshield wiper lip 23.1 (see Figure 9), a Wasserabzieher 23.2 (see Figure 10) or the like ,
- the respective rubber lip 23 is in the resting state of the device 1 on the other opposite nozzle wall 14.2 and in the operating state of the device 1 forms with the other opposite nozzle wall 14.2 an open nozzle gap 13.
- it is arranged and supported by means of a corresponding holder 24 on the nozzle wall 14.1.
- the device 1 according to the invention which is at least partially illustrated in FIGS. 1 to 10, is particularly suitable for carrying out the method according to the invention for application of a liquid or paste on both sides Medium 2 on a moving fibrous web 3, in particular paper, banknote paper, cardboard or packaging paper web.
- the moving fibrous web 3-seen in the web running direction L (arrow) of the moved fibrous web 3- is guided in front of the liquid sump 8 and the nip N by at least one immersion bath apparatus 10 which also receives the liquid or pasty medium 2.
- the level 9 of the liquid sump 8 in the roll inlet region 6 of the two applicator rolls 5.1, 5.2, is regulated by means of the dipping bath device 10.
- the immersion bath apparatus 10 in turn has a preferably adjustable nozzle gap 13, by means of which the level 9 of the liquid sump 8 in the roll inlet region 6 of the two applicator rolls 5.1, 5.2 is controlled.
- the contact time t of the liquid or pasty medium 2 on the moving fibrous web 3 is in the range of 0.04 to 4 s, preferably from 0.08 to 2 s, in particular from 0.12 to 1.6 s (see FIG ).
- the liquid or pasty medium 2 comprises at least PVA.
- the apparatus 1 which is at least partially illustrated in each case in FIGS. 1 to 10, is suitable for use in a machine 100 for producing a fibrous web 3, in particular a paper, banknote paper, cardboard or packaging paper web, from at least one fibrous stock suspension.
Landscapes
- Paper (AREA)
- Coating Apparatus (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201010003340 DE102010003340A1 (de) | 2010-03-26 | 2010-03-26 | Vorrichtung und Verfahren zum Auftragen eines flüssigen oder paströsen Mediums auf eine bewegte Faserstoffbahn |
| DE201010041505 DE102010041505A1 (de) | 2010-09-28 | 2010-09-28 | Vorrichtung und Verfahren zum beidseitigen Auftragen eines flüssigen oder pastösen Mediums auf eine bewegte Faserstoffbahn |
| PCT/EP2010/070649 WO2011116846A1 (de) | 2010-03-26 | 2010-12-23 | Vorrichtung und verfahren zum beidseitigen auftragen eines mediums auf eine bewegte faserstoffbahn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2550111A1 true EP2550111A1 (de) | 2013-01-30 |
| EP2550111B1 EP2550111B1 (de) | 2016-03-23 |
Family
ID=43798483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10798337.1A Active EP2550111B1 (de) | 2010-03-26 | 2010-12-23 | Vorrichtung und verfahren zum beidseitigen auftragen eines mediums auf eine bewegte faserstoffbahn |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2550111B1 (de) |
| CN (1) | CN102905797B (de) |
| WO (1) | WO2011116846A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6728740B2 (ja) * | 2016-02-16 | 2020-07-22 | 東レ株式会社 | 両面塗工装置および塗膜付きウエブの製造方法 |
| CN112536194A (zh) * | 2019-09-20 | 2021-03-23 | 青岛九环新越新能源科技股份有限公司 | 固态储能电极带材双辊涂布设备 |
| CN114904713B (zh) * | 2021-02-09 | 2023-07-07 | 北京好风光储能技术有限公司 | 一种电池极片挂浆装置 |
| CN114914387B (zh) * | 2021-02-09 | 2024-04-02 | 好风光储能技术(成都)有限公司 | 一种电极片挂浆工艺及挂浆装置 |
| EP4640320A1 (de) | 2024-04-25 | 2025-10-29 | Cellforce Group GmbH | Optimiertes beschichtungsverfahren |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI68369C (fi) * | 1983-03-01 | 1985-09-10 | Waertsilae Oy Ab | Bestrykningsanordning |
| DE4303357A1 (de) * | 1993-02-05 | 1994-08-11 | Hoechst Ag | Beschichtungsvorrichtung zum Auftragen dünner Naßfilme |
| DE19606459A1 (de) * | 1996-02-21 | 1997-08-28 | Voith Sulzer Papiermasch Gmbh | Verfahren und Vorrichtungen zum Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn |
| DE29610446U1 (de) | 1996-06-14 | 1996-09-05 | Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim | Vorrichtung zum Auftragen einer Flüssigkeit auf eine Faserstoffbahn |
| JP3252278B2 (ja) * | 1997-06-05 | 2002-02-04 | 株式会社横山製作所 | 両面塗工装置 |
| DE10001392A1 (de) * | 2000-01-14 | 2001-07-19 | Voith Paper Patent Gmbh | Auftragsvorrichtung |
| DE10131680A1 (de) * | 2001-06-29 | 2003-01-23 | Voith Paper Patent Gmbh | Auftragsvorrichtung |
| DE10359116A1 (de) * | 2003-12-17 | 2005-07-14 | Voith Paper Patent Gmbh | Auftragsvorrichtung |
-
2010
- 2010-12-23 WO PCT/EP2010/070649 patent/WO2011116846A1/de not_active Ceased
- 2010-12-23 CN CN201080067038.0A patent/CN102905797B/zh active Active
- 2010-12-23 EP EP10798337.1A patent/EP2550111B1/de active Active
Non-Patent Citations (1)
| Title |
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| See references of WO2011116846A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102905797A (zh) | 2013-01-30 |
| EP2550111B1 (de) | 2016-03-23 |
| WO2011116846A1 (de) | 2011-09-29 |
| CN102905797B (zh) | 2016-11-23 |
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