US3683851A - Apparatus for regulating the thickness of a coating on sheet material - Google Patents

Apparatus for regulating the thickness of a coating on sheet material Download PDF

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Publication number
US3683851A
US3683851A US115950A US3683851DA US3683851A US 3683851 A US3683851 A US 3683851A US 115950 A US115950 A US 115950A US 3683851D A US3683851D A US 3683851DA US 3683851 A US3683851 A US 3683851A
Authority
US
United States
Prior art keywords
scraper
holder
pressure
bracket
coating
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.)
Expired - Lifetime
Application number
US115950A
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English (en)
Inventor
Siegfried Nolden
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.)
Jagenberg Werke AG
Original Assignee
Jagenberg Werke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jagenberg Werke AG filed Critical Jagenberg Werke AG
Application granted granted Critical
Publication of US3683851A publication Critical patent/US3683851A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/12—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod
    • 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
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
    • 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
    • B05C11/041—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 means for positioning, loading, or deforming the blades
    • B05C11/042—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 means for positioning, loading, or deforming the blades allowing local positioning, loading or deforming along the blades
    • 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
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/0005—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating
    • D21H5/006—Controlling or regulating
    • D21H5/0062—Regulating the amount or the distribution, e.g. smoothing, of essentially fluent material already applied to the paper; Recirculating excess coating material applied to paper
    • D21H5/0067—Regulating the amount or the distribution, e.g. smoothing, of essentially fluent material already applied to the paper; Recirculating excess coating material applied to paper with an essentially cylindrical body, e.g. roll or rod

Definitions

  • ABSTRACT A round-rod scraper is used to regulate the thickness of a coating on paper.
  • the scraper is carried in av holder which is attached to one end of a pivotally mounted lever whose other end is carried by a bracket.
  • the bracket also carries a tube filled with compressed air bearing against the lever through the intermediary of a plurality of independently displaceable pressure elements.
  • the bracket itself is capable of having its position adjusted with the individual pressure elements held in fixed positions relative to one another.
  • the invention relates to a device for regulating the coating thickness in the coating of continuous webs of sheet material such as paper, plastic or the like, by means of a round scraper bearing on the coated side of the web. Specifically, the invention relates to the design and principle of operation of the elements holding and actuating the round-rod scraper.
  • the coating of continuous webs of paper is generally done by applying the coating medium, disposed in a storage container, to the moving paper web by means of dipping, transfer and/or coating rolls, with the paper web initially receiving some excess of coating medium.
  • a round-rod scraper Downstream of the coating device, in the direction of travel of the paper web, a round-rod scraper is disposed which extends across the entire width of the paper web and bears against the coated side of the paper web, its function being to hold back the excess coating medium received by the web, the coating thickness being determined by the magnitude of the bearing pressure.
  • the round-rod scraper further serves to bring about the uniform distribution and leveling of the coating medium remaining on the web.
  • Such round-rod scrapers which can be driven at any desired speed and in any desired direction of rotation, as dictated by the nature of the substrate material and of the coating medium and by the particular operating conditions, offer the advantage over conventional doctor blades equipped with fixed spreader knives that they avoid the formation of stripes on the coated side of the web which may be caused by fibers or other foreign bodies which may become lodged there.
  • the round rod scraper is carried in a holder which is pivotally mounted on an adjustable bracket.
  • the holder is acted upon by a distensible organ carrying a pressure medium and likewise supported by said bracket, said distensible organ being acted upon by a plurality of pressure elements which are adjustable in known manner independently of one another relative to the direction of the round rod scraper.
  • the arrangement is such that the holder receiving the round rod is fastened to the free end of one or more levers whose fulcrum is supported by the bracket.
  • the holder has a C-shaped mouth smaller than the diameter of the round rod and is formed of an elastic or resiliently deformable material such as plastic or the like, whereby said round rod scraper can be pushed into and removed from said mouth of said ing outward.
  • a C-shaped mouth smaller than the diameter of the round rod and is formed of an elastic or resiliently deformable material such as plastic or the like, whereby said round rod scraper can be pushed into and removed from said mouth of said ing outward.
  • round rod scraper 3 comes to bear against the coated side of the paper web 1.
  • the round rod scraper 3 may be pro vided with a smooth or contoured surface.
  • a drive (not shown) rotates the round rod scraper 3 preferably in the direction opposite to that of the paper web 1.
  • a prism-shaped holder 4 constructed of an elastic or resiliently displaceable'material such as plastic or the like, is provided with a C-shaped mouth or notchS which partially surrounds the round rod scraper 3, a cleaning felt 6 which extends over the entire length of the round rod scraper 3 being embedded in said notch. 1
  • the separation of the lips forming the mouth 5 is somewhat smaller than the diameterof the round rod scraper 3, and this adequately secures the round rod scraper 3 in position while readily permitting it to be inserted and. removed by virtue of the elasticity of the material of the holder.
  • the holder 4 receiving the round rod scraper is fastened to the free end of one or more levers 7 whose fulcrum 8 is supported by a bracket 9.
  • a bracket 9 In the upper part of said bracket 9, at the level of the holder 4, there is disposed a hose or tube 10, made of rubber or the like, to which compressed air is adjustably admitted and which bears against the upper end of lever 7, and hence the holder 4 carrying the round rod scraper 3.
  • the hose 10 is mounted in known manner in a plurality of pres sure elements 11 which are disposed side by side over the length of the round rod scraper and which are guided in a slide bar 17 connected with the bracket 9.
  • the elements I 1 can be displaced independently of one another by means of spindles l2 and handwheels 13 via the interposed flange bolts 18.
  • the precision adjustment of the round rod scraper 3 in the direction of the paper web I. is achieved by rotating the spindle 12. For example, if the handwheel 1 3 and spindle I2 rotate in clockwise direction they advance to the left as seen in FIG. 1 and carry flange bolt 18 to the left. In turn, this moves the element 11 to the left in the slide bar 17. Locally this compresses the tube 10 slightly for the desired effect on holder 4 and round rod scraper 3 at the selected location. All of this is achieved against the action of coiled spring 20 which undergoes compression as the cap 21 of spindle 12 bears against the head 22 of flange bolt 18.
  • the common bracket 9 to which both the round rod scraper 3 and the hose are indirectly fastened, is also constructed so as to be adjustable and fixable in position, so that regardless of the setting of the individual elements the device can be advanced and retracted as a unit by known means, such as the stationary spindle 23 and the guide 24.
  • the angular position of the body 9 can be varied around the fulcrum 25 and secured by means of the clamping screw 26.
  • the pressure at individual locations along the round rod may be adjusted either to render uniform all pressures, and thus thicknesses of coating, or to render them non-uniform in predetermined fashion.
  • an apparatus for regulating the thickness of a coating on a web of sheet material comprising a roll about which said web moves and a round-rod scraper extending transversely of said web against said roll and operating on the coating, the improvement which comprises a holder for said scraper, a lever carrying said holder and being pivotally mounted about a fulcrum parallel to said scraper so that the bearing of said scraper against said web may be varied, means for varying the bearing at spaced locations along said scraper, comprising a pressure displaceable member extending parallel to said holder, and a plurality of pressure elements independently displaceable perpendicularly to said holder to adjust the pressure longitudinally along said scraper through the intermediary of said displaceable member and said holder, said pressure displaceable i member comprising a distensible tube positioned between said lever and said independently displaceable pressure elements so as to transmit the action of said elements to predetermined locations along said scraper, and said holder being provided with a C- shaped opening for receiving said scraper, the mouth

Landscapes

  • Coating Apparatus (AREA)
  • Basic Packing Technique (AREA)
US115950A 1970-02-21 1971-02-17 Apparatus for regulating the thickness of a coating on sheet material Expired - Lifetime US3683851A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702008082 DE2008082B2 (de) 1970-02-21 1970-02-21 Vorrichtung zum regeln der auftragsstaerke beim beschichten laufender werkstoffbahnen

Publications (1)

Publication Number Publication Date
US3683851A true US3683851A (en) 1972-08-15

Family

ID=5762954

Family Applications (1)

Application Number Title Priority Date Filing Date
US115950A Expired - Lifetime US3683851A (en) 1970-02-21 1971-02-17 Apparatus for regulating the thickness of a coating on sheet material

Country Status (7)

Country Link
US (1) US3683851A (enrdf_load_stackoverflow)
DE (1) DE2008082B2 (enrdf_load_stackoverflow)
ES (1) ES195001Y (enrdf_load_stackoverflow)
FI (1) FI55541C (enrdf_load_stackoverflow)
FR (1) FR2078859A5 (enrdf_load_stackoverflow)
GB (1) GB1324762A (enrdf_load_stackoverflow)
SE (1) SE394252B (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785340A (en) * 1972-08-08 1974-01-15 Beloit Corp Metering bar
US3785001A (en) * 1972-03-27 1974-01-15 Brunswick Corp Bowling lane finish applicator
US3882817A (en) * 1974-01-11 1975-05-13 Black Clawson Co Doctor Blade Assembly
US4169425A (en) * 1975-12-11 1979-10-02 J. M. Voith Gmbh Apparatus for removing the surplus of coating compound in paper coating machines
US4282826A (en) * 1978-11-24 1981-08-11 Jagenberg-Werke Ag Apparatus for regulation of the coating thickness in the coating of continuous webs of material
DE3734747A1 (de) * 1987-10-10 1989-04-20 Johannes Zimmer Rakelvorrichtung
US4920914A (en) * 1987-10-10 1990-05-01 Johannes Zimmer Doctoring installation and doctoring device
US5378503A (en) * 1992-08-04 1995-01-03 The Kohler Coating Machinery Corporation Adjustable blade coater
US5417761A (en) * 1993-03-16 1995-05-23 J.M. Voith Gmbh Doctor blade holding apparatus
US5480486A (en) * 1993-12-21 1996-01-02 Beloit Technologies, Inc. Continuous adjustable backing bar for profiling coater blade
US6149726A (en) * 1997-09-02 2000-11-21 Voith Sulzer Papiermaschinen Gmbh Floating doctoring apparatus
CN104399649A (zh) * 2014-11-27 2015-03-11 江苏闳业机械有限公司 热熔胶复合机括刀机构
CN108745764A (zh) * 2018-06-11 2018-11-06 钟美珍 一种机械设备用表面除尘上油保养装置
CN112387518A (zh) * 2020-11-10 2021-02-23 盐城市协和机械有限公司 一种复合机的多功能涂胶装置

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT319734B (de) * 1971-10-13 1975-01-10 Feldmuehle Anlagen Prod Vorr zum streichen von bahnfoermigem gut
JPS54114546A (en) * 1978-02-23 1979-09-06 Ibm Coating method and apparatus therefor
DE3022955C2 (de) * 1980-06-19 1982-12-16 Jagenberg-Werke AG, 4000 Düsseldorf Vorrichtung zum Regeln der Auftragsstärke beim Beschichten laufender Materialbahnen
DE3402964A1 (de) * 1984-01-28 1985-08-01 Joachim 5223 Nümbrecht Geldmacher Vorrichtung zum streichen oder beschichten von papierbahnen o.dgl.
GB2171338A (en) * 1985-02-25 1986-08-28 Letraset International Ltd Bar coating apparatus
AT396437B (de) * 1986-10-25 1993-09-27 Voith Gmbh J M Vordosiereinrichtung in einer streichanlage
DE3710735A1 (de) * 1987-03-31 1988-10-13 Voith Gmbh J M Stoffauflauf fuer eine papiermaschine od. dgl.
DE4341341C1 (de) * 1993-12-06 1995-03-09 Jagenberg Ag Dosiersystem für Vorrichtungen zum Beschichten von Materialbahnen, insbesondere Papier- oder Kartonbahnen
DE4444779B4 (de) * 1994-12-15 2005-08-04 Voith Sulzer Papiermaschinen Gmbh Vorrichtung zum Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2579181A (en) * 1948-07-28 1951-12-18 Time Inc Enclosed gravure fountain
US2598733A (en) * 1949-03-16 1952-06-03 Champion Paper & Fibre Co Wiping blade for coating devices
US2695004A (en) * 1951-03-02 1954-11-23 Champion Paper & Fibre Co Doctor blade for coating machines
US2729192A (en) * 1952-12-31 1956-01-03 Champion Paper & Fibre Co Doctor blade for paper coating apparatus
US3113890A (en) * 1961-06-26 1963-12-10 Kimberly Clark Co Apparatus for smoothing coating materials on a paper web
US3182632A (en) * 1962-02-05 1965-05-11 Riegel Paper Corp Coating apparatus with improved doctor means
US3187718A (en) * 1962-05-28 1965-06-08 Black Clawson Co Flexible doctor blade coating apparatus
GB1064729A (en) * 1962-12-11 1967-04-05 Jagenberg Werke Ag Apparatus for regulating the coating thickness when coating travelling webs of paper or the like

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2579181A (en) * 1948-07-28 1951-12-18 Time Inc Enclosed gravure fountain
US2598733A (en) * 1949-03-16 1952-06-03 Champion Paper & Fibre Co Wiping blade for coating devices
US2695004A (en) * 1951-03-02 1954-11-23 Champion Paper & Fibre Co Doctor blade for coating machines
US2729192A (en) * 1952-12-31 1956-01-03 Champion Paper & Fibre Co Doctor blade for paper coating apparatus
US3113890A (en) * 1961-06-26 1963-12-10 Kimberly Clark Co Apparatus for smoothing coating materials on a paper web
US3182632A (en) * 1962-02-05 1965-05-11 Riegel Paper Corp Coating apparatus with improved doctor means
US3187718A (en) * 1962-05-28 1965-06-08 Black Clawson Co Flexible doctor blade coating apparatus
GB1064729A (en) * 1962-12-11 1967-04-05 Jagenberg Werke Ag Apparatus for regulating the coating thickness when coating travelling webs of paper or the like

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785001A (en) * 1972-03-27 1974-01-15 Brunswick Corp Bowling lane finish applicator
US3785340A (en) * 1972-08-08 1974-01-15 Beloit Corp Metering bar
US3882817A (en) * 1974-01-11 1975-05-13 Black Clawson Co Doctor Blade Assembly
US4169425A (en) * 1975-12-11 1979-10-02 J. M. Voith Gmbh Apparatus for removing the surplus of coating compound in paper coating machines
US4282826A (en) * 1978-11-24 1981-08-11 Jagenberg-Werke Ag Apparatus for regulation of the coating thickness in the coating of continuous webs of material
US4920914A (en) * 1987-10-10 1990-05-01 Johannes Zimmer Doctoring installation and doctoring device
DE3734747A1 (de) * 1987-10-10 1989-04-20 Johannes Zimmer Rakelvorrichtung
US5378503A (en) * 1992-08-04 1995-01-03 The Kohler Coating Machinery Corporation Adjustable blade coater
US5417761A (en) * 1993-03-16 1995-05-23 J.M. Voith Gmbh Doctor blade holding apparatus
US5480486A (en) * 1993-12-21 1996-01-02 Beloit Technologies, Inc. Continuous adjustable backing bar for profiling coater blade
US6149726A (en) * 1997-09-02 2000-11-21 Voith Sulzer Papiermaschinen Gmbh Floating doctoring apparatus
CN104399649A (zh) * 2014-11-27 2015-03-11 江苏闳业机械有限公司 热熔胶复合机括刀机构
CN108745764A (zh) * 2018-06-11 2018-11-06 钟美珍 一种机械设备用表面除尘上油保养装置
CN108745764B (zh) * 2018-06-11 2020-07-17 贵阳黔江航空保障装备有限责任公司 一种机械设备用表面除尘上油保养装置
CN112387518A (zh) * 2020-11-10 2021-02-23 盐城市协和机械有限公司 一种复合机的多功能涂胶装置

Also Published As

Publication number Publication date
GB1324762A (en) 1973-07-25
ES195001Y (es) 1975-06-01
DE2008082B2 (de) 1973-05-03
FI55541C (fi) 1979-08-10
FR2078859A5 (enrdf_load_stackoverflow) 1971-11-05
SE394252B (sv) 1977-06-20
ES195001U (es) 1975-01-16
FI55541B (fi) 1979-04-30
DE2008082A1 (de) 1971-09-09

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