US3150002A - Coating pan assembly - Google Patents

Coating pan assembly Download PDF

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Publication number
US3150002A
US3150002A US168990A US16899062A US3150002A US 3150002 A US3150002 A US 3150002A US 168990 A US168990 A US 168990A US 16899062 A US16899062 A US 16899062A US 3150002 A US3150002 A US 3150002A
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US
United States
Prior art keywords
coating
roll
pan
web
end walls
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
US168990A
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English (en)
Inventor
Edgar J Justus
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.)
Beloit Iron Works Inc
Original Assignee
Beloit Iron Works Inc
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 to NL288083D priority Critical patent/NL288083A/xx
Application filed by Beloit Iron Works Inc filed Critical Beloit Iron Works Inc
Priority to US168990A priority patent/US3150002A/en
Priority to GB1619/63A priority patent/GB953998A/en
Priority to FR922569A priority patent/FR1345449A/fr
Application granted granted Critical
Publication of US3150002A publication Critical patent/US3150002A/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
    • 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
    • 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
    • D21H5/0025—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating by contact with a device carrying the treating material
    • D21H5/003—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating by contact with a device carrying the treating material with a roller

Definitions

  • the present invention relates to an improved apparatus for coating a travelling web or the like and more particularly to an apparatus for supplying and applying a layer of coating to the surface of a travelling paper web.
  • One method of applying coating to the surface of a travelling paper web involves the use of a coating applicator roll wherein the web is supported on a backup roll, and the coating roll and backup roll form a coating nip, with coating on the coating roll surface being applied to the outer surface of the web.
  • Coating is placed on the coating roll by various means, and the present arrangement relates to an arrangement having a coating pan wherein the lower portion of the coating roll runs submerged beneath the surface of a pool of coating in the pan.
  • the layer of coating on the web may be further smoothed by a doctor blade or the coating may be left as applied by the applicator roll and dried and possibly later further treated by calender rolls or rolls which improve the surface of the coating.
  • the pool of coating in the supply pan must be substantially free of inconsistencies and foreign elements and therefore must be cleaned from time to time to remove particles of dried coating, and must be emptied at the end of a run or when coating is not applied. Also, upon the occurrence of a break in the travelling web or at the end of a run or upon chang ing the run the coating applicator roll must be moved out of its close running position to a rest position.
  • a further object of the invention is to provide a simplified power device utilizing the effects of gravity for rapidly dropping the coating roll out of operating position and for separating parts of the coating pan for draining and cleaning and for exposing the coating roll for cleaning.
  • a still further object of the invention is to provide a simplified power mechanism which will also controllably support the coating applying roll in close running position and maintain the parts of the pan in sealed relationship to contain the pool of coating.
  • a still further object of the invention is to provide an improved coating applying assembly which meets the foregoing requirements and accommodates the convenient supply of fresh coating liquid.
  • FIGURE 1 is a side elevational View shown in somewhat schematic form of a coating assembly with the elements in operating position;
  • FIGURE 2 is a schematic side elevational view showing the parts in drain position
  • FIGURE 3 is a fragmentary top plan view taken substantially along line IIIIII of FIGURE 1 showing a portion of the coating supply conduits;
  • FIGURE 4 is a vertical sectional view taken substantially along line IVIV of FIGURE 1, with parts in elevation.
  • a backup roll 10 carries a travelling web of paper W and coating is applied to the outer surface by a coating applicator roll 11 having a smooth cylindrical outer surface.
  • the backup roll 10 and coating roll 11 form an applicator nip N and coating is carried upwardly on the outer surface of the coating roll 11 from a pool of coating at the base of a coating pan assembly 12.
  • the foregoing embodies the basic coating apparatus and may be employed as a station in a papermaking machine and being followed by drying and possibly polishing rolls, or may be employed in a converting machine wherein coating is applied to the surface of paper taken from rolls.
  • the coating applicator roll 11 is maintained in the position shown in FIGURES 1 and 4 during operation so that this may be conveniently referred to as a coating or an operating position.
  • the coating roll 11 Upon breakage of the web W or when coating is to be no longer applied, the coating roll 11 is dropped down to the rest position R of FIGURE 2.
  • the pan is dropped down to the drain position D of FIGURE 2 for flushing out and cleaning the pan of coating and for cleaning the coating roll 11.
  • the backup roll 16 is supported on a bearing 13 mounted on a frame 14.
  • the coating pan assembly 12 includes a pair of end plates or end walls 15 and 16 and a member 17 which provides the bottom and side walls for the pan assembly, and for convenience will be referred to as the coating pan 17.
  • the pan 17 coacts with the end walls 15 and 16 to form a container for the pool of coating so that the lower edge of the coating roll can be submerged in the pool and pick up coating to carry it up against the paper web W.
  • the pan 17 includes a reinforcing end band 24 suitably attached to a sealing band 25 which is shown as being part of the swing arm 20.
  • the end band 24 is suitably secured to the arcuate sheet metal pan 17 such as by welding, and is secured to the sealing band 25 by bolts.
  • the lower arcuate edge 26 of the end wall 16 and the inner edge 27 of the sealing band 25 coact to prevent leakage of the coating from the pan, and for this purpose are finished with a machined fit.
  • the weight of the end wall 16 rests against the inner surface 27 of the sealing band 25, and supports the coating roll 11.
  • the roll is journalled in bearings 22 on its shaft 22a which passes through seals 22b in the end wall 16.
  • the bearing 22 is securely mounted at the top of the swing arm 21 and the weight of the coating roll is thus transferred to the end wall 16.
  • the upper position of the coating roll bearings 22 as they are urged upwardly is limited by a nip pressure controlling stop bolt 23 mounted on the frame 14. This bolt is adjustable so as to control the pressure of the nip as the bearing 22 is held upwardly against the stop bolt 23.
  • the assembly is supported and operated by a power means consisting of a cylinder 23 with a piston slidable therein connected to a piston rod 29 which is pivotally connected to the pan arm 24
  • a power means consisting of a cylinder 23 with a piston slidable therein connected to a piston rod 29 which is pivotally connected to the pan arm 24
  • the lower end of the cylinder is pivotally supported on a pad 30, and admission of pressurized fluid such as air into the lower end of the cylinder will urge the pan arm 26 upwardly thereby lifting upwardly on the end wall 16 and the swing arm 21 and bearing 22.
  • FIGURE 3 illustrates the pivotal support arrangements for the swing arm 20 which has a bearing ring 32 pivotally mounted on the journal 31 at the top of the stand 13.
  • the swing arm 21 also has a bearing ring 33 mounted on the journal 31.
  • the journal is hollow and extending through the center thereof is a pipe 34 for conducting coating to the pan.
  • the pipe leads to a T 35 which is pivotally mounted on the hollow shaft 36 forming a continuation of the pipe 34, and supports a supply pipe 37 leading down to the pan.
  • the pipe 37 can pivot downwardly as the pan drops downwardly.
  • the travelling web supported on the backup roll receives a layer of coating as it passes through the nip N in FIGURE 1.
  • the end of the coating operation such as with breakage of the web W, pressure is relieved from the cylinder 28 and the roll 11 and pan assembly 12 drop downwardly.
  • the end walls and 16 and the roll are free to drop only a limited distance and stop at a rest position R. This is due to a stop bolt 38 on the swing arm 21 hitting a stop bracket 37 on the stand 18, FIGURE 1.
  • the interior of the pan is freely accessible for draining and for flushing with water, and the end walls 15 and 16 and the coating roll 11 are accessible from their inner surfaces and lower surface. Also, the coating roll is free and clear of the backup roll so that a fresh web may be threaded through the machine.
  • a coating mechanism for a paper machine comprising a backup roll for supporting a travelling paper web, a coating roll parallel to the backup roll and defining therewith a coating nip, a coating pan beneath the coating roll having end walls and a one-piece member forming a bottom and side walls, a pair of pivotal arms for supporting said member in coacting relationship with the ends walls to contain a pool of coating for application by the coating roll, bearings on the end walls supporting said coating roll, and a fluid pressurized operator connected to said arms for moving the coating roll and pan between an operating position wherein the coating roll is in close running relationship to the web and the one-piece member is against the end walls, a rest position wherein the coating roll is away from the web, and a drain position wherein the one-piece member is separated from said end walls, said member and end walls separating at a lowermost point of the pan at said drain position for a complete draining of the pan.
  • a coating mechanism for a paper machine comprising a backup roll for supporting a travelling paper web, a coating roll parallel to the backup roll and defining therewith a coating nip, a coating pan assembly including end plates for providing the ends of the pan assembly and an arcuate upwardly facing pan, pivotally mounted first arms secured to the end plates, pivotally mounted second arms secured to the pan, stand means pivotally supporting said arms, an end seal between the pan and the end plates, power means connected to said second arms for carrying the pan upwardly to engage the end plates and carrying the end plates upwardly, a stop on said stand means limiting downward movement of the first arms so that the second arms may continue moving downwardly for separation of the pan from the end plates for drainage and cleaning of the pan, bearings for the coating roll mounted on the end plates, a frame, bearings for the backup roll mounted on the frame, and adjustable stops on the frame engageable by the coating roll bearings limiting the upward movement of the coating roll to determine the nip pressure between the coating roll and the backup roll.
  • a coating mechanism for a paper machine including a backup roll for supporting a travelling paper web, a coating roll defining a coating nip with the backup roll, and a coating pan assembly, the pan assembly comprising a pair of end walls, an arcuate pan member having arcuate end sealing surfaces for engaging the end walls and coacting therewith to form a pan for a pool of coating to be applied to the web by the roll, bearings for the coating roll carried by said end walls, and means moving said coating roll and pan member between a coating position wherein the roll is in close running relation to the web and a rest position wherein the roll is separated from the web and for moving said arcuate pan member to a drain position where the pan is drained of coating, said sealing surfaces being at the lowermost point of the pan member at said rest and drain positions so that all of the coating will drain from the pan when said sections are separated and the pan members in the drain position and the end walls are in the rest position.
  • a coating mechanism for a paper machine including a backup roll for supporting a travelling paper web, a coating roll parallel to the backup roll and defining therewith a coating nip, and a coating pan assembly, the pan assembly comprising first and second sections coacting to form a pan for coating, hearings on the first section for rotatably supporting the roll, means for moving said sections between a coating position wherein the coating roll is in close running relation to the web, a rest position wherein the coating roll is separated from the web, and a drain position wherein said sections are separated, and a seal between said sections located at the very bottom of the pan assembly at said rest and drain positions so that all of the coating will be drained from said second section at said drain position.
  • a coating mechanism for a paper machine comprising a backup roll for supporting a travelling paper web, a coating roll parallel to the backup roll and defining therewith a coating nip, a coating pan beneath the coating roll having end walls and a one-piece member forming a bottom and side walls, means for supporting said member in coating relationship with the end walls to contain a pool of coating for application by the coating roll to the paper web, operating means connected to said member and moving the member between a coating position wherein the coating roll is in close running relation with the web, a rest position wherein the coating roll is separated from the web, and a drain position wherein said member and said end Walls are separated for draining said member, a seal between said member and said end walls being at the very bottom of the pan assembly at said rest and drain positions so that the pan will drain when the member is at said drain position, and means limiting movement of the end walls in said rest position so that the member may be moved to drain position.
  • a coating mechanism for a paper machine including a backup roll for a travelling paper web, a coating roll, and a coating pan assembly
  • the pan assembly comprising first and second sections coacting to form a pan for coating applied to the surface of the web by the coating roll, bearings for supporting the coating roll mounted on the first section, power means connected to said second section for moving the pan sections between a coating position with the roll in close running relation to the web, a rest position with the coating roll away from the Web, and a drain position with said sections separated, and stop means engaging the first section at said rest position so that the second section may be moved to drain position and said sections will separate for draining the coating.
  • a coating mechanism for a paper machine including a backup roll, a coating roll, and a coating pan assembly
  • the pan assembly comprising first and second sections coacting to form a pan for coating applied to the surface of the web by the coating roll, a support for said second section accommodating movement from a coating position to a drain position, said second section supporting said first section, and a stop limiting travel of said first section so that the second section will separate from the first in moving to drain position.

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  • Coating Apparatus (AREA)
  • Paper (AREA)
US168990A 1962-01-26 1962-01-26 Coating pan assembly Expired - Lifetime US3150002A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL288083D NL288083A (de) 1962-01-26
US168990A US3150002A (en) 1962-01-26 1962-01-26 Coating pan assembly
GB1619/63A GB953998A (en) 1962-01-26 1963-01-14 Improvements in or relating to web coating
FR922569A FR1345449A (fr) 1962-01-26 1963-01-24 Dispositif d'enduisage pour machines à papier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US168990A US3150002A (en) 1962-01-26 1962-01-26 Coating pan assembly

Publications (1)

Publication Number Publication Date
US3150002A true US3150002A (en) 1964-09-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
US168990A Expired - Lifetime US3150002A (en) 1962-01-26 1962-01-26 Coating pan assembly

Country Status (3)

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US (1) US3150002A (de)
GB (1) GB953998A (de)
NL (1) NL288083A (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3256002A (en) * 1963-12-23 1966-06-14 Xerox Corp Xerographic fixing device
US3272178A (en) * 1963-08-15 1966-09-13 Beloit Corp Edge controls for flooded nip coaters
US3783782A (en) * 1972-08-04 1974-01-08 Faustel Inc Revolving turret for supporting printing press cart
US3789757A (en) * 1971-03-26 1974-02-05 Motter J Printing Press Co Printing press having automatic printing cylinder loading and unloading apparatus
US4015559A (en) * 1975-01-13 1977-04-05 Owens-Corning Fiberglas Corporation Apparatus for coating continuously produced filaments
US4297967A (en) * 1979-02-02 1981-11-03 Francesco Osta Device for applying an operating pressure to a roller
US4664058A (en) * 1985-10-25 1987-05-12 International Paper Company Coating roll surface configuration for applying liquid sterilant to a moving web
US4735144A (en) * 1986-05-21 1988-04-05 Jenkins Jerome D Doctor blade and holder for metering system
US4945832A (en) * 1986-05-16 1990-08-07 Odom Jimmie L Doctor blade system
US5117768A (en) * 1991-02-25 1992-06-02 Euclid Tool & Machine Co. Three roll coating machine with pneumatic and micro controlled offset roll
US5152220A (en) * 1990-08-17 1992-10-06 De La Rue Giori S.A. Wiping device for the plate cylinder of an intaglio printing machine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US678913A (en) * 1901-04-15 1901-07-23 Joseph Stephenson Knockdown water-tank.
US1451726A (en) * 1920-08-27 1923-04-17 Hoe & Co R Bearing and fountain adjustment for intaglio machines
US1783587A (en) * 1927-04-19 1930-12-02 United Shoe Machinery Corp Device for softening stiffeners for boots and shoes
US2106104A (en) * 1935-11-27 1938-01-18 Cons Water Power & Paper Co Cleaning roll
US2406056A (en) * 1943-11-24 1946-08-20 Minnesota & Ontario Paper Co Means for coating papers
GB765383A (en) * 1954-03-01 1957-01-09 Farrel Birmingham Co Apparatus for extruding plastic material
US2887049A (en) * 1955-12-29 1959-05-19 Harris Intertype Corp Ink fountain
US2920558A (en) * 1953-10-09 1960-01-12 Dayton Rubber Company Fountain dividers

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US678913A (en) * 1901-04-15 1901-07-23 Joseph Stephenson Knockdown water-tank.
US1451726A (en) * 1920-08-27 1923-04-17 Hoe & Co R Bearing and fountain adjustment for intaglio machines
US1783587A (en) * 1927-04-19 1930-12-02 United Shoe Machinery Corp Device for softening stiffeners for boots and shoes
US2106104A (en) * 1935-11-27 1938-01-18 Cons Water Power & Paper Co Cleaning roll
US2406056A (en) * 1943-11-24 1946-08-20 Minnesota & Ontario Paper Co Means for coating papers
US2920558A (en) * 1953-10-09 1960-01-12 Dayton Rubber Company Fountain dividers
GB765383A (en) * 1954-03-01 1957-01-09 Farrel Birmingham Co Apparatus for extruding plastic material
US2887049A (en) * 1955-12-29 1959-05-19 Harris Intertype Corp Ink fountain

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3272178A (en) * 1963-08-15 1966-09-13 Beloit Corp Edge controls for flooded nip coaters
US3256002A (en) * 1963-12-23 1966-06-14 Xerox Corp Xerographic fixing device
US3789757A (en) * 1971-03-26 1974-02-05 Motter J Printing Press Co Printing press having automatic printing cylinder loading and unloading apparatus
US3783782A (en) * 1972-08-04 1974-01-08 Faustel Inc Revolving turret for supporting printing press cart
US4015559A (en) * 1975-01-13 1977-04-05 Owens-Corning Fiberglas Corporation Apparatus for coating continuously produced filaments
US4297967A (en) * 1979-02-02 1981-11-03 Francesco Osta Device for applying an operating pressure to a roller
US4664058A (en) * 1985-10-25 1987-05-12 International Paper Company Coating roll surface configuration for applying liquid sterilant to a moving web
US4945832A (en) * 1986-05-16 1990-08-07 Odom Jimmie L Doctor blade system
US4735144A (en) * 1986-05-21 1988-04-05 Jenkins Jerome D Doctor blade and holder for metering system
US5152220A (en) * 1990-08-17 1992-10-06 De La Rue Giori S.A. Wiping device for the plate cylinder of an intaglio printing machine
US5117768A (en) * 1991-02-25 1992-06-02 Euclid Tool & Machine Co. Three roll coating machine with pneumatic and micro controlled offset roll

Also Published As

Publication number Publication date
GB953998A (en) 1964-04-02
NL288083A (de)

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