EP0347544A2 - Dispositif pour appliquer un matériau en poudre ou en flocs sur un substrat - Google Patents

Dispositif pour appliquer un matériau en poudre ou en flocs sur un substrat Download PDF

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Publication number
EP0347544A2
EP0347544A2 EP89106928A EP89106928A EP0347544A2 EP 0347544 A2 EP0347544 A2 EP 0347544A2 EP 89106928 A EP89106928 A EP 89106928A EP 89106928 A EP89106928 A EP 89106928A EP 0347544 A2 EP0347544 A2 EP 0347544A2
Authority
EP
European Patent Office
Prior art keywords
applicator
transport
container
storage container
bearing core
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Withdrawn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
EP89106928A
Other languages
German (de)
English (en)
Other versions
EP0347544A3 (fr
Inventor
Henning J. Claassen
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.)
Nordson Corp
Original Assignee
Nordson Corp
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
Priority claimed from DE19883821226 external-priority patent/DE3821226A1/de
Application filed by Nordson Corp filed Critical Nordson Corp
Publication of EP0347544A2 publication Critical patent/EP0347544A2/fr
Publication of EP0347544A3 publication Critical patent/EP0347544A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/144—Arrangements for supplying particulate material the means for supplying particulate material comprising moving mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1459—Arrangements for supplying particulate material comprising a chamber, inlet and outlet valves upstream and downstream the chamber and means for alternately sucking particulate material into and removing particulate material from the chamber through the valves

Definitions

  • the invention relates to a device for applying a powder or flake material to a substrate.
  • a moisture-absorbing material in the form of fibers or flakes is added to the flakes made of cellulose or synthetic materials usually used in the production of these articles.
  • Superabsorbent is used in various manufacturing processes, for example for the manufacture of baby diapers or sanitary napkins, so that versatile application devices are required.
  • the required, relatively low application weights of about 1 g to 25 g per product represent a problem, in particular in connection with the high production speeds of 50 to 100 products per minute required.
  • a universal system is therefore required for the supply, metering and application of superabsorbent, which can also work both in cycles and continuously.
  • the invention is therefore based on the object of providing a device for applying a powdery or flaky material, in particular the material known under the name "superabsorbent", to a substrate in which the disadvantages mentioned above do not occur.
  • a device is to be proposed which enables the exact, volumetric metering of this material in powder or flake form, regardless of the production speed.
  • the advantages achieved by the invention are based on the use of a module system consisting of an applicator which can apply the material in powder and flake form, and a transport device which is based on the powder or flake form of the material and the material from one Feed reservoir to the applicator.
  • a corresponding material sensor which works for example capacitively, can be provided.
  • it is advisable to physically separate the transport container and the storage container i.e. not to feed the material directly from its transport container to the applicator, but rather to transfer the material from its transport container to the storage container so that enough material is in the container when the transport container is changed
  • Storage container remains in order to be able to bridge the changeover time without stopping the machine.
  • transport container directly as a storage container, that is to say to load the applicator directly from the transport container.
  • the storage container for the flake-shaped material can, for example, have a conical shape, that is to say taper from top to bottom, so that the material is removed from the deepest and narrowest point of the storage container can be pulled. This ensures that the remaining material collects on the floor in the area of the transport device and is thus conveyed safely and reliably.
  • the storage container for the flake-like material can also have parallel side walls, kettles, pyramids or another shape.
  • At least one comb shaft with at least one two-bladed rotor is arranged in the storage container for the flaky material; the two blades of the rotor can either run in a straight line or at an angle to one another.
  • a hose spiral, a screw, suction by negative pressure, a pneumatic pump or a similar conveying device can be provided as the transport device for the transfer of the powdery or flaky material from the storage or transport container to the applicator.
  • a hose spiral is particularly suitable because of its small volume, which is inserted directly into the transport container for the powdery material, for example, and gradually empties it.
  • the hose spiral can be arranged at the lowest point of the cone, so that this storage container can be completely emptied.
  • the applicator which serves as a discharge and metering device, can process both pulverulent material and flake material and consists of a fixed, central bearing core which has a cylindrical shape and is provided on one side with an air intake line and on the opposite side with an outlet line .
  • the air suction line and the outlet line which are acted upon by negative pressure, are at a distance from one another, but are symmetrical to one another in the two halves of the cylindrical bearing core.
  • the outer wall of the bearing core has, at least in the area of the intake line and the blow-out line, a multiplicity of openings which are formed by bores, slots, perforations or the like. In principle, such breakthroughs can also be provided in the other areas; however, this could impair the required vacuum in the bearing core.
  • a driven, approximately ring-shaped jacket rotates around the stationary bearing core and is provided with at least one recess perforated in the bottom, which serves to hold the powdered or flake material.
  • the dimensions, in particular the length and width of the depressions, are adapted to the amount of powdered or flake material to be metered.
  • the rotating jacket can be completely replaced to adapt to different product sizes or product numbers per jacket revolution.
  • These pockets can be provided with so-called “dosing pins” which protrude into the pockets and reduce the volume of the interior of the pocket; In this way it is possible, for example, to balance small differences in volume in the case of different powdery or flaky materials.
  • dosing pins can, for example, be combined with the fastening screws for the pockets and protrude into the pocket as an extension of the fastening screws in order to reduce the volume of their interior.
  • the rotating jacket can be driven directly via the drive shaft of the associated production machine and thus run at a speed that is directly, for example linearly dependent on the machine speed.
  • a continuous drive via independent or DC-voltage-driven motors or an intermittent drive via stepper motors or similar drive devices is also possible.
  • the blow-out line can be operated both continuously and intermittently.
  • a corresponding control valve is provided in the blow-out line.
  • the rotating jacket of the applicator is expediently surrounded by a cover which is broken only in the area of the material feed and the material discharge.
  • the size of the feed or discharge opening formed in this way depends on the nature of the product to be manufactured and on the production speed.
  • the pulverulent or flaky material conveyed by the transport or feed container via the transport device is sucked through the feed opening in the cover of the applicator into a recess in the rotating core, specifically by means of the suction line of the bearing core, which is acted upon by negative pressure and which has a precisely defined pressure difference between the supply opening of the cover on the one hand and the suction line on the other.
  • This pressure difference leads to an air flow from the supply opening of the cover over the depressions or pockets in the rotating jacket, the perforations in the depressions or pockets and the stationary bearing core to the suction line.
  • This amount of material is taken along with the rotation of the rotating jacket and now reaches the opposite side of the bearing core, where the exhaust air from the blow-out line through the bearing core, the openings in the jacket of the bearing core and the perforations in the depressions or pockets of the jacket get into the recesses or pockets and take the material located there to the discharge opening. Since the entire amount of material in the pockets or recesses is expelled, an exact dosage can be made.
  • a nozzle-shaped extension if necessary with an additional elbow, can be provided in order to bring the amount of material blown out to the actual processing point, for example a coating device for diapers.
  • the powdery or flaky material By regulating the amount of air or the air pressure in the discharge area, the powdery or flaky material can be accelerated as desired or can be spread without pressure if necessary without compressed air.
  • the device for applying superabsorbent to a diaper which is shown in FIG. 1 and is generally indicated by reference number 10, has a reservoir 12, which is connected to the "diaper machine" 16 via a hose spiral 14.
  • Fig. 1 the structure of the diaper machine 16 is only indicated schematically, namely by a winding spool 20 and an unwinding spool 22 for the diaper material. These two coils are arranged so that the diaper material 24 is transported between them on a horizontal path and is coated from above with the superabsorbent 26, which emerges from an elongated nozzle 28 of the applicator 18.
  • FIG. 1 A further variant is indicated in FIG. 1, namely two coils 20, 22 arranged vertically one above the other, between which the diaper material 24 runs in the vertical direction. Now the superabsorbent 26 is applied from the nozzle 28 from the side, as can be seen in FIG. 1.
  • FIGS. 2 and 3 show an embodiment of a storage container 12 for powdery superabsorbent; this storage container 12 has a funnel-shaped filling opening 30, which is followed by conical walls 32 which converge at the bottom of the storage container 12.
  • a transport spiral 33 serving as a transport device is arranged, which is rotated by an electric motor 34 and thereby conveys the powdery superabsorbent from the bottom of the storage container 12 via the hose spiral 14 to the applicator 18.
  • a capacitive material sensor 36 which monitors the fill level in the reservoir 12 and, for example, generates an alarm signal when the fill level falls below a predetermined value and thus alerts the operator that the reservoir 12 must be refilled.
  • Such a transport spiral 14, 33 can also convey the powdery material directly from the transport container, for example a barrel, a sack, a container or the like, so that the transport container also serves as a storage container.
  • FIGS. 4 and 5 show an embodiment of a storage container 12 for flake-shaped superabsorbent.
  • This storage container 12 also has a funnel-shaped filling opening 30 and conical side walls 32, a capacitive material sensor 36 and the transport spiral 33 on the bottom of the storage container 12.
  • a total of five comb shafts 38 are mounted in the two opposite, parallel side walls of the storage container 12, which (see FIG. 4) protrude somewhat beyond the side wall and are rotated by a common drive, namely a belt drive 40 be connected to the electric motor 34 for the transport spiral 33.
  • a plurality of four-bladed rotors 42 sit on each comb shaft 38, the blades of which are arranged at a right angle to one another.
  • the four wings can also run at an angle to one another. After all, a single blade per rotor is sufficient for many cases.
  • the flake-shaped superabsorbent is fed to the applicator 18 by means of the transport spiral 33 and the hose spiral 14.
  • FIGS. 6 and 7 show details of the applicator 18, which has a closed, housing-like cover 45, which on one side, as shown in FIG. 6 the top, with a feed opening 44 connected to the hose spiral 14 for the flake or powder form Superabsorbent and on the opposite side, ie according to the illustration in FIG. 6 of the lower side, is provided with a discharge opening 46.
  • the direction of transport for the superabsorbent is indicated by the two arrows.
  • a hollow cylindrical, stationary bearing core which is closed on one end face, as shown in FIG. 7 the left end face, and on the opposite end face, that is, as shown in FIG. 7, with an intake line 50 and a blow-out line 52 is provided.
  • a negative pressure is applied to the suction line 50, so that the air is sucked out of the stationary bearing core 48 in the direction of the double arrows, while the blow-out line 52 is pressurized with compressed air, as indicated by the double arrows.
  • the feed opening 44, the suction line 50, the blow-out line 52 and the discharge opening 46 are in a straight line, but are not directly connected to one another.
  • the suction line and the blow-out line 52 are arranged symmetrically to one another and vertically one above the other in the two halves of the cylindrical bearing core 48.
  • the stationary bearing core 48 has a series of openings in its outer wall, specifically on its side facing the feed opening 44 and on the other hand on its side facing the discharge opening 46. These breakthroughs can be formed by bores, slots, perforations or the like. If necessary, the entire wall can be provided with such openings.
  • the stationary bearing core 48 is surrounded by a rotating jacket 54, the inner surface of which rests on the outer wall of the stationary bearing core 48 and which has the shape of a hollow cylinder.
  • the two end faces of the jacket 54 are closed; on an end face there is a shaft 56 which is coupled via a drive belt 58 to the electric motor 60 of the diaper machine 16 (see FIG. 1) and is thereby driven directly by the diaper machine, so that the rotational speed of the jacket 54 is directly dependent on the machine speed.
  • the jacket 54 thus rotates coaxially to the stationary bearing core 48 in the direction of the arrows around it and has three schematically indicated depressions 58 in its outer surface, which have openings at their bottom Chen, so holes, slots, perforations or the like are provided.
  • Perforated pockets 60 are also inserted into these three depressions 58 and fastened by screws; the pockets, like the entire jacket 54, can be replaced and thus adapted to different operating conditions.
  • the powdered or flake-shaped superabsorbent conveyed by the hose spiral reaches the supply opening 44 in the cover 45 of the applicator 18 and thus in the area of the suction line 50, and the air from the supply opening 44 into the pocket 60 in the upper one, as shown in FIG. 6
  • Indentation 58 and from there through the perforations in pocket 60 and indentation 58 sucks into the interior of the stationary bearing core 48.
  • the powdered or flaky superabsorbent is transported into the pocket 60 by the sucked-in air in an amount that depends on the flow rate of the suction air, the rotational speed of the jacket 54 and the inner volume of the pocket 60.
  • an “endless” depression 58 can be provided in the rotating jacket 54, that is to say a circumferential channel which is provided with perforations on its base.
  • the blown air can be operated both continuously and intermittently via a corresponding control valve, in particular a solenoid valve, which is indicated in FIG. 1 by reference number 19.
  • the size of the feed opening 44 or the discharge opening 46 in the longitudinal direction of the applicator 18 depends on the nature of the product to be manufactured, for example a diaper, and the production speed.
  • a nozzle-like extension 28 is connected to the discharge opening 46, which brings a precisely metered amount of material to the actual processing point.
  • the superabsorbent material By regulating the amount of air or the air pressure in the application area, the superabsorbent material can be accelerated as desired or spread without pressure, as is possible, for example, when applying the product vertically down onto a horizontal substrate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Nozzles (AREA)
EP19890106928 1988-06-23 1989-04-18 Dispositif pour appliquer un matériau en poudre ou en flocs sur un substrat Withdrawn EP0347544A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3821226 1988-06-23
DE19883821226 DE3821226A1 (de) 1988-06-23 1988-06-23 Vorrichtung zum auftragen eines pulver- oder flockenfoermigen materials auf ein substrat

Publications (2)

Publication Number Publication Date
EP0347544A2 true EP0347544A2 (fr) 1989-12-27
EP0347544A3 EP0347544A3 (fr) 1990-09-19

Family

ID=6357100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890106928 Withdrawn EP0347544A3 (fr) 1988-06-23 1989-04-18 Dispositif pour appliquer un matériau en poudre ou en flocs sur un substrat

Country Status (2)

Country Link
EP (1) EP0347544A3 (fr)
JP (1) JPH0252070A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0768121A2 (fr) * 1995-10-16 1997-04-16 Mg2 S.P.A. Machine pour colorer des produits céramiques
EP0768122A2 (fr) * 1995-10-16 1997-04-16 Mg2 S.P.A. Machine pour doser des produits pharmaceutiques dans des réservoirs
EP0886092A1 (fr) * 1997-06-16 1998-12-23 Sicpa Holding S.A. Robinet de dosage et méthode pour la distribution dosée de matériau pâteux
WO2002081390A1 (fr) * 2001-03-20 2002-10-17 Ppg Industries Ohio, Inc. Procede et dispositif pour former du verre a motif et/ou texture et articles de verre ainsi obtenus
US7150585B2 (en) 2002-10-14 2006-12-19 Nordson Corporation Process and equipment for the conveyance of powdered material
DE202015009351U1 (de) 2015-10-09 2017-03-16 Robert Wunderlich & Marco Wunderlich GbR (vertreten durch Robert Wunderlich, 07554 Gera) Vorrichtung zum Applizieren eines Pulvers
EP4205715A1 (fr) * 2021-12-29 2023-07-05 Paul Hartmann AG Procédé de dosage et d'application d'une petite quantité de matériau particulaire

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5429788A (en) * 1994-03-28 1995-07-04 Kimberly-Clark Corporation Apparatus and method for depositing particulate material in a composite substrate

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1033486A (en) * 1963-09-09 1966-06-22 Possis Machine Corp Apparatus for depositing finely divided solid material on a work piece
BE732568A (fr) * 1968-10-15 1969-10-16
GB1298094A (en) * 1970-09-10 1972-11-29 Vos Ni I Pi Ogneupornoi Promy A machine for applying powderlike material to a surface
FR2488932A1 (fr) * 1980-08-25 1982-02-26 Serizawa Nobuo Appareil d'alimentation constante

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51103884A (ja) * 1975-03-10 1976-09-14 Sumitomo Chemical Co Kyosanseikachionkokansenino seizoho

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1033486A (en) * 1963-09-09 1966-06-22 Possis Machine Corp Apparatus for depositing finely divided solid material on a work piece
BE732568A (fr) * 1968-10-15 1969-10-16
GB1298094A (en) * 1970-09-10 1972-11-29 Vos Ni I Pi Ogneupornoi Promy A machine for applying powderlike material to a surface
FR2488932A1 (fr) * 1980-08-25 1982-02-26 Serizawa Nobuo Appareil d'alimentation constante

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0768121A2 (fr) * 1995-10-16 1997-04-16 Mg2 S.P.A. Machine pour colorer des produits céramiques
EP0768122A2 (fr) * 1995-10-16 1997-04-16 Mg2 S.P.A. Machine pour doser des produits pharmaceutiques dans des réservoirs
EP0768122A3 (fr) * 1995-10-16 1997-12-29 Mg2 S.P.A. Machine pour doser des produits pharmaceutiques dans des réservoirs
EP0768121A3 (fr) * 1995-10-16 1997-12-29 Mg2 S.P.A. Machine pour colorer des produits céramiques
US5765607A (en) * 1995-10-16 1998-06-16 Mg2 S.P.A. Machine for metering pharmaceutical products into containers
EP0886092A1 (fr) * 1997-06-16 1998-12-23 Sicpa Holding S.A. Robinet de dosage et méthode pour la distribution dosée de matériau pâteux
WO1998058201A1 (fr) * 1997-06-16 1998-12-23 Sicpa Holding S.A. Soupape de dosage et procede de distribution dosee de milieux pateux
WO2002081390A1 (fr) * 2001-03-20 2002-10-17 Ppg Industries Ohio, Inc. Procede et dispositif pour former du verre a motif et/ou texture et articles de verre ainsi obtenus
US7150585B2 (en) 2002-10-14 2006-12-19 Nordson Corporation Process and equipment for the conveyance of powdered material
US7478976B2 (en) 2002-10-14 2009-01-20 Nordson Corporation Process and equipment for the conveyance of powdered material
US7481605B2 (en) 2002-10-14 2009-01-27 Nordson Corporation Process and equipment for the conveyance of powdered material
US7648312B2 (en) 2002-10-14 2010-01-19 Nordson Corporation Process and equipment for the conveyance of powdered material
US8057129B2 (en) 2002-10-14 2011-11-15 Nordson Corporation Process and equipment for the conveyance of powdered material
US8491226B2 (en) 2002-10-14 2013-07-23 Nordson Corporation Process and equipment for the conveyance of powdered material
DE202015009351U1 (de) 2015-10-09 2017-03-16 Robert Wunderlich & Marco Wunderlich GbR (vertreten durch Robert Wunderlich, 07554 Gera) Vorrichtung zum Applizieren eines Pulvers
DE102015219584A1 (de) 2015-10-09 2017-04-13 Robert Wunderlich & Marco Wunderlich GbR Vorrichtung zum Applizieren eines Pulvers
DE102015219584B4 (de) 2015-10-09 2023-03-02 Robert Wunderlich & Marco Wunderlich GbR Vorrichtung zum Applizieren eines Pulvers
EP4205715A1 (fr) * 2021-12-29 2023-07-05 Paul Hartmann AG Procédé de dosage et d'application d'une petite quantité de matériau particulaire

Also Published As

Publication number Publication date
JPH0252070A (ja) 1990-02-21
EP0347544A3 (fr) 1990-09-19

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