Classifications

• • 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
  • D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
  • D21H23/56—Rolls
• • 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
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S118/00—Coating apparatus
  • Y10S118/14—Roller, conical
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S118/00—Coating apparatus
  • Y10S118/15—Roller structure
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
  • Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
  • Y10T156/1798—Surface bonding means and/or assemblymeans with work feeding or handling means with liquid adhesive or adhesive activator applying means

Definitions

• the invention relates to a device for applying flowable substances to a surface of a web-shaped material according to the preamble of claim 1.
• a large number of devices for applying flowable substances to a surface of a web-shaped material have already become known. Each of these devices requires a special adaptation to the respective materials to be applied and to the conditions with regard to the properties of the sheet material, processing temperature, speed and the amount of the materials to be applied as well as the type of the materials to be applied.
• a defined amount of flowable materials in particular adhesives, is applied to at least a first layer of a web-shaped material, so that this layer is applied to at least one further layer of a web-shaped material and by an emerging one Adhesive connection remains on this at least one layer of the web-shaped material.
• the web-shaped material can be, for example, very thin polymer films or Act carrier layers that are extremely sensitive to tensile stresses.
• a further layer can be laminated onto a layer with visual information. For this it is particularly necessary that a uniform connection between the layers is made possible so that the information can also be recognized and queried.
• the invention is therefore based on the object of providing a device for applying flowable substances to a surface of a web-shaped material, which enables uniform application of a set thickness of a film over a very long service life.
• a defined application width of the flowable material on the surface of the sheet-like material can also be given, which corresponds to the requirements for the further processing of the sheet-like material on a further layer of sheet-like material is adaptable, especially if the sheet-like material is wider than the outer surface of the applicator roller.
• the air flowing out in the edge region of the roller body of the application roller forms a seal of the bearing parts, which further enables the application roller to be used both for a so-called flying coating, in which the application roller only works against a web tension of the web-shaped material, and for a coating using it a back pressure roller can be used.
• At least one axial bore is provided at least at one end of the applicator roller, from which transverse bores preferably branch off in the edge region of the roller body.
• a receiving part is provided on each end face of the roller body which forms an outwardly leading gap with the edge region of the roller body.
• a sealing of the bearing points and a limitation of the lateral surface of the roller body as the application surface can thereby be made possible.
• the receiving part at least partially covers the transverse bore.
• the receiving part is designed as a bearing and has a bearing section for receiving the applicator roller.
• the end face of the roller body and the surfaces arranged complementary thereto before the receiving part form a gap which is oriented at right angles to the longitudinal axis of the applicator roller or at an angle in the direction of the edge region of the web-like material or the bearing points.
• the gap between the end face of the roller body and the receiving part is adjustable. This means that the seal can be taken into account for the respective application and the sensitivities of the flowable material and the sheet-like materials. Likewise, the flow velocity of the medium flowing outward through the gap can advantageously be adjustable.
• a UV crosslinking-active adhesive is provided as the flowable substance. This embodiment is particularly advantageous in the case of these adhesives, which would cure or polymerize immediately if subjected to shear stress.
• compressed air is used as the medium. This can result in an inexpensive configuration, since the ambient air can be compressed and used. Alternatively, it can be provided that special gases or liquid media or the like are used to effect a sealing of the bearing points.
• the applicator roller is received by adjustable bearings.
• the bearings can also serve as an additional setting option for the metering doctor.
• changes can be readjusted due to the use of the applicator roller and, if necessary, the bearings.
• the rotational speed of the applicator roller is equal to or less than the web speed of the web-like material. This enables a uniform and thin film of a flowable substance to be applied.
• the web-shaped material rests on the application roller by means of web tension, which can be adjusted by a guide roller arranged before and after the application roller in the web conveying direction.
• Figure 1 is a schematic side view of the invention
• Figure 2 is a schematic enlarged partial view, partly in
• Figure 3 is a schematic enlarged sectional view of a
• FIG. 4 shows a schematic detailed illustration of an application roller and its storage
• Figure 5 is a single view of the applicator roller in cross section
• FIG. 6 shows a section of a schematically enlarged side view of the device according to FIG. 1 in an alternative method of applying the flowable substance to a surface of the web-like material.
• FIG. 1 shows a side view of a device 11 for applying a flowable substance to a surface of a web-shaped material 12.
• the material 12 is drawn off from a supply roll 13 and guided via guide rollers 16, 17, 18 to an application roller 19 for applying the flowable material to the web-shaped material 12.
• the web-shaped material 12 coated with flowable material is deflected via a transport roller 21 and fed to a film or film 23 in order to form a composite 24.
• the film 23 is guided past the device 11 via a roller 26, guide rollers 27, 28 being provided before and after the device 11, through which the film 23 is wrapped around the roller 26.
• FIG. 1 shows a processing station in a system consisting of several stations.
• An application for this exemplary embodiment is the work process described below, in which the device 11 takes over one work step:
• a photopolymer film with holograms is used to produce counterfeit-proof documents.
• These photopolymer films are supplied with protective layers arranged on both sides.
• a delamination device (not shown) can be provided on the roller 26, which removes the protective layer.
• the device 11 according to the invention then applies a carrier layer to the photopolymer film as the web-shaped material 12.
• a curing device is provided, which produces a bond 24 between the applied carrier layer and the photopolymer film, a UV crosslinking-active adhesive preferably being provided as the flowable substance.
• the process can be repeated for the second side in a second work cycle, which follows the first work cycle just described. Due to the high processing speeds and quality requirements, it is necessary that the backing layer be applied with a flowing substance on a surface evenly and with a constant film thickness, so that during the further processing there is a bubble-free and continuously cross-linked by the adhesive between the applied backing layer and the photopolymer film ,
• the device 11 for applying flowable substances to a surface of a web-shaped material 12 can be used for other applications that are similar or are different from the application described above.
• a few micrometers thin or thick films made of plastic or other materials can also be processed and processed.
• a flowable substance is stored in a dispenser 31.
• a light-protected dispenser 31 is preferably used when processing an UV crosslinking-active adhesive. Due to the static pressure, the flowable material is fed from this dispenser 31 via a housing section 32 to a pre-metering channel 33 of an application head 34. This is shown in more detail in a partial sectional view of the device 11 according to FIG. Via the pre-metering channel 33, the flowable material is fed to a metering doctor 36, which is preferably designed as a doctor blade.
• This metering knife 36 can be adjusted by means of an adjusting mechanism 37, the transverse profile along the metering knife 36 being thereby adjustable. Furthermore, the metering knife 36 is rotatably mounted.
• the gap is zero.
• the metering doctor 36 rotates counterclockwise, the size of the gap can be adjusted, the gap size increasing as the degree of rotation increases. As a result, the amount of the flowable substance to be picked up by the application roller 19 can be determined.
• the application roller 19 is provided in an upper section of the application head 34, a segment region 38 being arranged outside the application head 34.
• the web-shaped material 12, which according to the exemplary embodiment described above is designed as a carrier layer, is guided past this segment region 38, which projects above the application head 34.
• the guide roller 18 and the transport roller 21 are positioned in relation to the application roller 19 in such a way that the web-shaped material 12 bears against the application roller 19 under at least slight tension.
• the position of the transport roller 21 relative to the applicator roller 19 can be adjusted by means of an adjusting mechanism 39 shown in more detail in FIG. Likewise, the adjustment to the roller 26 or the distance or contact pressure can be adjustable via this adjustment mechanism 39.
• the device 11 can be mounted on a housing of the system by the elements identified by reference number 41.
• the housing section 32 as well as can extend over two shafts 42 (FIG. 2) projecting into the housing section 32 the associated applicator roller 19 and transport roller 21 can be moved away from the roller 26 in a simple and quick manner in order to clean or readjust the parts or to feed in new web-shaped materials.
• FIG. 3 shows a schematic plan view according to FIG. 2 in partial cross section.
• the roller 21 is wider than the roller 26 for the application described by way of example.
• the ratios with respect to the width of the rollers 21 and 26 and their diameter can be selected for specific applications. This also applies to the conditions of the application roller 19 and the metering doctor 36.
• FIG 4 the applicator roller 19 is shown in more detail.
• This application shaft 19 is rotatably driven.
• a drive shaft 43 is provided which engages a clutch 44 which is designed as a roller-mounted shaft.
• a plug connection 45 is provided, through which the rotation of the drive shaft 43 is transmitted to the applicator roller 19.
• a U-shaped recess is provided on a connecting piece 46 of the applicator roller 19, into which a bolt 47 engages and compensates for axial tolerances between the coupling 44 and the applicator shaft 19.
• the application roller 19 which is shown in full cross-section in FIG. 5, has left and right bearings 48, 49. These shaft sections are spherical and are rotatably mounted in a receiving part 51, 52 which can be attached to the housing section 32. Due to the crowning, an axial compensation between the left and right receiving part can be created. Even with a slight offset of the opposing receiving bores of the holding elements, there can be a smooth rotation of the roller without clamping.
• the application roller 19 is designed as a hollow shaft and has a through bore 53 lying in the longitudinal central axis 55, which is connected on one side to two axial bores 54. In the area of the bearing point 49, the through hole 53 is closed in a media-tight manner by a threaded pin 56 or the like.
• the application roller 19 has a roller body 58 with a lateral surface 59, through which the flowable material is transferred to a surface of the web-shaped material 12.
• end faces 61, 62 are provided, which with the Receiving parts 51, 52 form a gap 63.
• complementary sections 66, 67 of the receiving part 51, 52 are provided, which extend over the entire circumference.
• a counter bearing 69 is provided in the housing section 32 on an end of the applicator roller 19 opposite the drive shaft 43, which makes it possible for the medium to be fed into the axial bores 54 via connections 71.
• the medium which is preferably under pressure, passes through the axial bores into the through bore 53 and from there via transverse bores 82, 83 branching off therefrom.
• the medium is deflected by the receiving part 51, 52 covering the openings 84 of the transverse bores 82, 83 and is guided to the outside via the gap 63.
• Through the bearing point 48, 49 and the receiving part 51, 52 a tight or almost sealing connection is created, so that the medium emerging from the Querbohrunge ⁇ 82, 83 medium is forced out through the gap 63 to the outside.
• air is used as the medium, which is preferably led out under pressure through the gap 63.
• Gaseous, liquid, gel-like media or the like can also be used, depending on the application.
• a sealing of the bearing points 48, 49 can be achieved by blowing in air and the air flowing at least partially radially outwards in the gap 63. This is particularly advantageous when using UV crosslinking-active adhesive, which would cure shortly if shear stress occurs, which is the case when the adhesive enters bearings 48, 49. A standstill of the drive roller or an impairment during operation can thus be counteracted.
• the gap 63 is arranged through the side surface 61, 62 and the complementary sections 66, 67 of the receiving part 51, 52 at an angle, so that the direction of the outward direction with respect to the lateral surface 59 points outwards. As a result, the flowable material which extends beyond the edge region of the lateral surface 59 can be blown off, so that it does not accumulate in the region of the gap 63.
• the configuration of the gap 63 in the width and in the direction can be carried out optionally; the alignment is shown in FIG. 4 merely as an example.
• the gap 63 can be made constant or nozzle-shaped towards the outer surface 59, so that a kind of Venturi effect can arise in the outermost edge region between the outer surface 59 of the roller body 58 and the sections 66 and 67 of the receiving parts 51, 52. Furthermore, it can be provided that instead of a complete, radial flow outlet of the medium, an at least partially and / or twisted flow outlet is also provided. It can further be provided that the formation of the gaps 63 is provided by inserts which can be attached to the end faces 61, 62 and which communicate with the receiving part 51, 52. It can also be provided that the receiving parts 51, 52 have interfaces for receiving inserts, which are interchangeable.
• the applicator roller 19 also has a readjustable mounting, which enables both an adjustment with respect to the center distance to the metering doctor 36 and an axially parallel adjustment.
• the application shaft 19 is made of a material that is resistant to the flowable substances.
• a material that is resistant to the flowable substances for example, stainless steel or bronze or the like can be provided.
• the structuring or surface of the lateral surface 59 can be designed to be application-specific.
• the use of compressed air to seal the gap 63 between the lateral surface 59 of the applicator roller 19 and an adjoining receiving part 51, 52 can start, for example, at 0.1 bar and increase to one or more bar.
• the width of the lateral surface 59 is smaller than the width of the web-shaped material 12.
• the web-shaped material 12 applied to the film 23 has a web width in the final state as a composite 24, which is less than the width of the lateral surface 59, so that a composite 24 is created which has a connection over its entire width.
• FIG. 6 shows an adjustment mechanism 39 by means of which the position of the transport roller 61 can be adjusted relative to the housing section 32. Via a set screw 91, a wedge 92 guided in a slot is moved up and down, which is connected to a spring-loaded bolt 93. By changing the wedge position, the bolt 93 can more or less immerse in and out of the housing section 32. In this way, for example, the position of the transport roller 21 relative to the applicator roller 19 and the roller 26 can be adjusted, as is shown in broken lines and how this reflects the position according to FIGS. 1 and 2. In this arrangement, a more or less strong contact of the web-shaped material 12 with the application roller 19 is achieved via the web tension.
• the application roller 19 has a rotational speed which is equal to or less than the web speed of the web-shaped material 12. This allows an application against the web tension, which results in a so-called flying coating.
• the sports roller 21 is arranged in a position which bears against the applicator roller 19, as shown in FIG.
• the contact pressure of the roller 21 can be adjusted via the adjustment mechanism 39 to the applicator roller 19.
• the position of the transport roller 21 relative to the roller 26 can also be adjusted.
• the adjusting mechanism 39 has a bearing element 94, as a result of which the two above-described positions of the transport roller 21 can be adjusted.

Landscapes

• Coating Apparatus (AREA)
• Machines For Laying And Maintaining Railways (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7634270

Family Applications (1)

Country Status (8)

Families Citing this family (1)

Family Cites Families (3)

• 2000
  • 2000-03-10 DE DE10011769A patent/DE10011769A1/de not_active Withdrawn
• 2001
  • 2001-02-28 AT AT01915303T patent/ATE251951T1/de not_active IP Right Cessation
  • 2001-02-28 WO PCT/EP2001/002245 patent/WO2001076767A1/fr active IP Right Grant
  • 2001-02-28 DE DE50100801T patent/DE50100801D1/de not_active Expired - Lifetime
  • 2001-02-28 EP EP01915303A patent/EP1265714B1/fr not_active Expired - Lifetime
  • 2001-02-28 CA CA002400718A patent/CA2400718A1/fr not_active Abandoned
  • 2001-02-28 PL PL01357295A patent/PL357295A1/xx unknown
  • 2001-02-28 US US10/221,434 patent/US6730166B2/en not_active Expired - Fee Related
  • 2001-02-28 ES ES01915303T patent/ES2208573T3/es not_active Expired - Lifetime

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events