US3352706A - Method for smoothing a coated web - Google Patents

Method for smoothing a coated web Download PDF

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US3352706A
US3352706A US175070A US17507062A US3352706A US 3352706 A US3352706 A US 3352706A US 175070 A US175070 A US 175070A US 17507062 A US17507062 A US 17507062A US 3352706 A US3352706 A US 3352706A
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Prior art keywords
web
fluid
squeegee
sheet
coating
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US175070A
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James S Alkofer
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Eastman Kodak Co
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Eastman Kodak Co
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Priority to US175070A priority Critical patent/US3352706A/en
Priority to FR925548A priority patent/FR1348216A/en
Priority to GB7188/63A priority patent/GB1029987A/en
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    • 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
    • D21H25/10—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with blades
    • 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
    • B05C11/028—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with a body having a large flat spreading or distributing surface
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B15/00—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours
    • D06B15/08—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours by scraping
    • D06B15/085—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours by scraping by contact with the textile material
    • 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
    • D21H5/0065—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 blades
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/74—Applying photosensitive compositions to the base; Drying processes therefor
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/266—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension of base or substrate

Definitions

  • This invention involves a squeegee, and more particularly, a squeegee and squeegee method for removing fluid from a surface of a moving web.
  • Squeegees previously employed for removing fluid from moving webs have used wiper blades, rollers, and streams of air.
  • Some of the shortcomings of such devices are: tendencies to trap foreign material at the squeegee point and thus mar the passing web; inability to prevent contamination of a supply of fluid being applied to a web by another subsequently applied fluid running back down the web; confinement of the web to a fixed path of travel past the squeegee; tension and friction forces imposed upon the passing web creating power losses, limiting web speeds, and tending to tear, or injure the web; and expense of manufacture, repair, and adjustment.
  • the objects of this invention include removing fluid from a surface of a web traveling at high speed by an economical squeegee which will tend to not trap foreign matter at the squeegee point, or subject the passing web to injurious forces or tensions, and which will allow the passing web some latitude as to a path of travel.
  • Another object of this invention is to prevent contamination of a supply of fluid being applied to a passing web by a subsequently applied fluid running back along the moving web against the direction of the webs travel.
  • the objects of this invention are accomplished by a fluid-removing member or squeegee sheet in contact with fluid on a moving web, the squeegee sheet having a surface substantially planar at the locus of contact with the fluid.
  • FIG. 1 shows a cross section of a squeegee according to this invention in contact with fluid on the surface of a web
  • FIG. 2 shows a cross section of another embodiment of a squeegee according to this invention in contact with the fluid on a web.
  • web 10 the undersurface of which is wet with a fluid 12, is moved in the direction of the arrow past a fluid-removing member or squeegee sheet 11 which is mounted upon a bar 13.
  • the fluid 12 and the squeegee sheet 11 are brought into contact with each other by positioning the web and/ or squeegee sheet.
  • the physical forces acting upon fluids including Bernoulli forces, surface tension, capillarity, adhesion, cohesion, and gravity cooperate to hold the squeegee sheet 11 in contact with the fluid 12, and to remove the fluid 12 from the undersurface of the web 10, allowing the fluid to run off in a downwardly-directed, run-ofl path.
  • the squeegee sheet 11 removes a gross excess of fluid from the web 10 even if the web forms a loop or dips below the squeegee sheet 11 after passing beyond the sheets trailing edge.
  • the squeegee sheet 11 may also be disposed for removing fluid from the upper side of web 10 so long as suitable fluid run-off paths are provided.
  • the shape of the upper surface of squeegee sheet 11 as illustrated in the drawings can be defined in the language of descriptive geometry as a ruled or cylindrical surface of single curvature having a plane director and a curved directrix.
  • the plane director with respect to which a line generating the surface remains parallel, is a plane tangent to the web 10 at the locus of contact between squeegee sheet 11 and fluid 12.
  • the curved directrix which the generating line touches, lies in the plane of a crosssection perpendicular to the tangent plane and parallel to a longitudinal edge of the web, and the directrix asymptotically approaches the tangent plane in the direction of travel of the web.
  • the fluid boundary surface of squeegee sheet 11 may also be described as a surface formed by a straight-line generatrix remaining parallel to the plane tangent to the web, normal to the cross-sectional plane, and constantly touching the curved directrix in the cross-sectional plane.
  • the form of the fluid-contacting or fluid-boundary surface of squeegee sheet 11 is such that a substantial area of the squeegee (as compared to a wiper blade, for example) is in contact with the fluid and substantially parallel to the web 10 at the locus of contact between the squeegee sheet 11 and the fluid 12.
  • the squeegee sheet is resilient or movably mounted, it remains in contact with the fluid 12 on the web 10 throughout a considerable vertical latitude in the path of travel of the web 10.
  • the web need not be threaded 1 through guides or rollers to engage the squeegee sheet 11 at a fluid-removing station, and the squeegee may be engaged by casting a loop of the web 10 until contact is made between the squeegee sheet 11 and the fluid 12. Once contact is made, a resilient squeegee sheet rises and falls with the travel variations of web 10. If the squeegee is formed of light-weight material, it remains in contact with the fluid 12 on web 10 even when the web is stopped.
  • squeegee sheet 11 Although a gross excess of fluid is removed by the squeegee sheet 11, small particles of foreign matter are allowed to pass without being stopped at the fluid removing location where they might scratch or injure the passing web 10.
  • the squeegee sheet 11 surpasses wiper blade or pinch-roll type squeegees in this ability to allow small particles of foreign matter to pass the fluid-removing location without being trapped.
  • the squeegee sheet 11 illustrated in FIG. 2 is formed of a thin, resilient material such as a light-weight, flexible sheet of plastic or rubber, and is backed up by resilient members 14 formed of stiffer sheeets of resilient ma terials such as rubber, plastic or metal, all of which are fastened to a bar 13.
  • the resilient members 14 urge the squeegee sheet 11 upward toward contact with the passing web 10, and thus facilitate contact between the squeegee sheet 11 and the fluid 12.
  • squeeege of the type shown in FIG. 2 in which the squeegee sheet 11 is formed of polyethylene and is mils thick.
  • the resilient members 14 backing up such a squeegee sheet are formed of stainless steel, and the over-all length of squeegee sheet 11 varies between 2 and 3 inches. Although width of material is not a significant factor, such a squeegee has been used on paper from 3 /2 inches to 10 inches wide.
  • the embodiment illustrated in FIG. 2 has a drip tab 16 formed on squeegee sheet 11.
  • the drip tab 16 comprises a surface forming a dihedral angle with the surface of squeegee sheet 11 along the squeegee sheets trailing edge, or edge last to contact the moving web 10.
  • a satisfactory drip tab may be fashioned by bending the squeegee sheet to form an abrupt, dihedral angle in the trailing edge portion.
  • the function of drip tab 16 is to divert a fluid 15 which is applied to web 10 at. a point beyond the squeegee point and which is running back along the undersurface of web 10 against the direction of the webs travel. Deflection of fluid 15 by drip tab 16 prevents fluid 15 from contaminating the fluid supply from which fluid 12 was applied to web 10.
  • Viscous drag and shear stress forces between the squeegeeesheet 11 and the web 10 may be kept within suitable limits by adjusting the length of squeegee sheet 11.
  • the web speed available is a function of the strength and surface texture of the web, the viscosity of the fluid being removed, and the length of the squeegee sheet. Proper balancing of these parameters allows very high web speeds, and speeds up to 200 feet per minute have already been obtained during squeegeeing of processing solutions from photographic paper.
  • the method of smoothing a fluid coating on a web which includes continuously moving a web having a fluid coating thereon over a path, thereafter at a position spaced from the position where the fluid coating was applied to the web engaging an unsupported end of a sheet of thin flexible material with the still fluid coating over a substantial area in the direction of travel of the web, said material being wet by the fluid coating and held thereagainst substantially by the wetting action alone, holding the other end of the sheet of material against movement, and continuously moving the web and fluid coating past the material to smooth the coating on the web.
  • the method of smoothing a coating of a fluid carried on a moving web comprising the steps of contacting the fluid coating with an unsupported end of a thin flexible sheet, extending the contacted portion of said sheet over a substantial area of said coating in the direction of web travel, holding said sheet against said fluid coating substantially only by the Wetting action of the fluid on said sheet, and restraining the opposite end of the sheet against movement while maintaining movement of the web and fluid coating relative to the sheet.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)

Description

Nov. 14, 1967 J. 5. ALKOFER 3,352,706
METHOD FOR SMOOTHING A COATED WEB Filed Feb. 25, 19 62 JamesS. Allcofer IN V EN TOR.
AT TORNEJKS' United States Patent 3,352,706 METHOD FQR SMOOTHING A CGATED WEB James S. Alkofer, Rochester, N.Y., assignor to Eastman Kodak Company, Rochester, N.Y., a corporation of New Jersey Filed Feb. 23, 1962, Ser. No. 175,070 6 Claims. (Cl. 117-64) This invention involves a squeegee, and more particularly, a squeegee and squeegee method for removing fluid from a surface of a moving web.
Squeegees previously employed for removing fluid from moving webs have used wiper blades, rollers, and streams of air. Some of the shortcomings of such devices are: tendencies to trap foreign material at the squeegee point and thus mar the passing web; inability to prevent contamination of a supply of fluid being applied to a web by another subsequently applied fluid running back down the web; confinement of the web to a fixed path of travel past the squeegee; tension and friction forces imposed upon the passing web creating power losses, limiting web speeds, and tending to tear, or injure the web; and expense of manufacture, repair, and adjustment.
In part to overcome such deficiencies, the objects of this invention include removing fluid from a surface of a web traveling at high speed by an economical squeegee which will tend to not trap foreign matter at the squeegee point, or subject the passing web to injurious forces or tensions, and which will allow the passing web some latitude as to a path of travel.
Another object of this invention is to prevent contamination of a supply of fluid being applied to a passing web by a subsequently applied fluid running back along the moving web against the direction of the webs travel.
In general, the objects of this invention are accomplished by a fluid-removing member or squeegee sheet in contact with fluid on a moving web, the squeegee sheet having a surface substantially planar at the locus of contact with the fluid.
The invention will be more clearly understood by reference to the drawings, wherein:
FIG. 1 shows a cross section of a squeegee according to this invention in contact with fluid on the surface of a web; and
FIG. 2 shows a cross section of another embodiment of a squeegee according to this invention in contact with the fluid on a web.
Referring to the drawings, web 10, the undersurface of which is wet with a fluid 12, is moved in the direction of the arrow past a fluid-removing member or squeegee sheet 11 which is mounted upon a bar 13. The fluid 12 and the squeegee sheet 11 are brought into contact with each other by positioning the web and/ or squeegee sheet. While the squeegee sheet 11 is in contact with the fluid 12 and the web 10 is moving, or there is relative motion between the web 10 and the squeegee sheet 11, the physical forces acting upon fluids including Bernoulli forces, surface tension, capillarity, adhesion, cohesion, and gravity cooperate to hold the squeegee sheet 11 in contact with the fluid 12, and to remove the fluid 12 from the undersurface of the web 10, allowing the fluid to run off in a downwardly-directed, run-ofl path.
Part of the explanation for the squeegee sheets removal of excess fluid from the web 10 is that a substantial surface area of the squeegee sheet 11 disrupts the surface continuity of the fluid 12 on the under side of the web 10, and the squeegee sheet 11 forms a boundary of fluid 12. The fluid 12 is then situated between two principal boundary areas-the boundary formed by the web 10 and the boundary formed by the squeegee sheet 11. Relative movement between the web boundary and squeegee sheet boundary helps overcome the forces causing the fluid 12 to adhere to the web 10, and the speed of this relative movement affects the amount of fluid released from the webhigher speeds tending to leave the web more nearly dry than lower speeds' The fluid thus released from adherence to the web is guided away from the web along a run-off path. The run-off path illustrated in the drawings is the downwardly curved portion of the surface of squeegee sheet 11, and this curved portion communicates with the fluid boundary portion of the squeegee sheets surface so that the fluid is led away from the web 10.
The squeegee sheet 11 removes a gross excess of fluid from the web 10 even if the web forms a loop or dips below the squeegee sheet 11 after passing beyond the sheets trailing edge. The squeegee sheet 11 may also be disposed for removing fluid from the upper side of web 10 so long as suitable fluid run-off paths are provided.
The shape of the upper surface of squeegee sheet 11 as illustrated in the drawings can be defined in the language of descriptive geometry as a ruled or cylindrical surface of single curvature having a plane director and a curved directrix. The plane director, with respect to which a line generating the surface remains parallel, is a plane tangent to the web 10 at the locus of contact between squeegee sheet 11 and fluid 12. The curved directrix, which the generating line touches, lies in the plane of a crosssection perpendicular to the tangent plane and parallel to a longitudinal edge of the web, and the directrix asymptotically approaches the tangent plane in the direction of travel of the web. The fluid boundary surface of squeegee sheet 11 may also be described as a surface formed by a straight-line generatrix remaining parallel to the plane tangent to the web, normal to the cross-sectional plane, and constantly touching the curved directrix in the cross-sectional plane.
As shown in the drawings, the form of the fluid-contacting or fluid-boundary surface of squeegee sheet 11 is such that a substantial area of the squeegee (as compared to a wiper blade, for example) is in contact with the fluid and substantially parallel to the web 10 at the locus of contact between the squeegee sheet 11 and the fluid 12.
If the squeegee sheet is resilient or movably mounted, it remains in contact with the fluid 12 on the web 10 throughout a considerable vertical latitude in the path of travel of the web 10. The web need not be threaded 1 through guides or rollers to engage the squeegee sheet 11 at a fluid-removing station, and the squeegee may be engaged by casting a loop of the web 10 until contact is made between the squeegee sheet 11 and the fluid 12. Once contact is made, a resilient squeegee sheet rises and falls with the travel variations of web 10. If the squeegee is formed of light-weight material, it remains in contact with the fluid 12 on web 10 even when the web is stopped.
Although a gross excess of fluid is removed by the squeegee sheet 11, small particles of foreign matter are allowed to pass without being stopped at the fluid removing location where they might scratch or injure the passing web 10. The squeegee sheet 11 surpasses wiper blade or pinch-roll type squeegees in this ability to allow small particles of foreign matter to pass the fluid-removing location without being trapped.
The squeegee sheet 11 illustrated in FIG. 2 is formed of a thin, resilient material such as a light-weight, flexible sheet of plastic or rubber, and is backed up by resilient members 14 formed of stiffer sheeets of resilient ma terials such as rubber, plastic or metal, all of which are fastened to a bar 13. The resilient members 14 urge the squeegee sheet 11 upward toward contact with the passing web 10, and thus facilitate contact between the squeegee sheet 11 and the fluid 12.
Success has been had with a squeeege of the type shown in FIG. 2 in which the squeegee sheet 11 is formed of polyethylene and is mils thick. The resilient members 14 backing up such a squeegee sheet are formed of stainless steel, and the over-all length of squeegee sheet 11 varies between 2 and 3 inches. Although width of material is not a significant factor, such a squeegee has been used on paper from 3 /2 inches to 10 inches wide.
The embodiment illustrated in FIG. 2 has a drip tab 16 formed on squeegee sheet 11. The drip tab 16 comprises a surface forming a dihedral angle with the surface of squeegee sheet 11 along the squeegee sheets trailing edge, or edge last to contact the moving web 10. A satisfactory drip tab may be fashioned by bending the squeegee sheet to form an abrupt, dihedral angle in the trailing edge portion. The function of drip tab 16 is to divert a fluid 15 which is applied to web 10 at. a point beyond the squeegee point and which is running back along the undersurface of web 10 against the direction of the webs travel. Deflection of fluid 15 by drip tab 16 prevents fluid 15 from contaminating the fluid supply from which fluid 12 was applied to web 10.
Viscous drag and shear stress forces between the squeegeeesheet 11 and the web 10 may be kept within suitable limits by adjusting the length of squeegee sheet 11. The web speed available is a function of the strength and surface texture of the web, the viscosity of the fluid being removed, and the length of the squeegee sheet. Proper balancing of these parameters allows very high web speeds, and speeds up to 200 feet per minute have already been obtained during squeegeeing of processing solutions from photographic paper.
At very high web speeds, a squeegee sheeet which is long enough will remove nearly all the fluid from the surface of the passing web, but will create a severe drag force capable of damaging the web. At very high web speeds, the length of squeegee sheet 11 is reduced to overcome this tendency. The drag force of squeegee sheet ll and its fluid-removing capacity appear to be best balanced when a very thin layer of fluid is permitted to pass the trailing edge of the squeegee sheet. Such a condition will vary with materials, fluids, etc., but can easily be determined by varying web speeds for each case.
The invention has been described in detail with particuular reference to preferred embodiments thereof but it will be understood that variations and modifications can be etfected within the spirit and scope of the invention as described hereinabove and as defined in the appended.
claims.
I claim:
1. The method of smoothing a fluid coating on a web which includes continuously moving a web having a fluid coating thereon over a path, thereafter at a position spaced from the position where the fluid coating was applied to the web engaging an unsupported end of a sheet of thin flexible material with the still fluid coating over a substantial area in the direction of travel of the web, said material being wet by the fluid coating and held thereagainst substantially by the wetting action alone, holding the other end of the sheet of material against movement, and continuously moving the web and fluid coating past the material to smooth the coating on the web.
2. The method of smoothing a coating of a fluid carried on a moving web comprising the steps of contacting the fluid coating with an unsupported end of a thin flexible sheet, extending the contacted portion of said sheet over a substantial area of said coating in the direction of web travel, holding said sheet against said fluid coating substantially only by the Wetting action of the fluid on said sheet, and restraining the opposite end of the sheet against movement while maintaining movement of the web and fluid coating relative to the sheet.
3. The method of smoothing a coating of a fluid carried on a web according to claim 2 including the step of regulating the speed of said web past the material to con-' trol the thickness of said coating.
4. The method of smoothing a coating of fluid carried on a web according to claim 2 including the step of guiding the fluid released from adherence to said web by contact with the sheet from the vicinity of said web along a downwardly-directed, fluid-run-off path away from said web.
5. The method of smoothing a coating. of a fluid carried on a web according to claim 2 including the step of diverting away from said web, along a downwardly-directed fluid diverting path, any fluid moving along said web toward the downstream end of said material from a subsequent fluid coating station.
6. The method of smoothing a coating of a fluid carried on a web according to claim 2 wherein said thin flexible sheet is polyethylene substantially 10 mils thick.
References Cited UNITED STATES PATENTS 2,326,249 8/1943 Nokes l18121 2,774,329 12/1956 Smith 118123 X 2,995,469 8/1961 LeClairc 1l8--l03 3,081,191 3/1963 Smith et al. l171ll 3,181,500 5/1965 Paulson et a1. 1l8126 FOREIGN PATENTS 364,886 12/ 1962 Germany.
ALFRED L. LEAVITT, Primary Examiner.
RICHARD D. NEVIUS, Examiner.
M. KAPLAN, J. A. HAUG, E. B. LIPSCOMB,
Assistant Examiners.

Claims (1)

1. THE METHOD OF SMOOTHING A FLUID COATING ON A WEB WHICH INCLUDES CONTINUOUSLY MOVING A WEB HAVING A FLUID COATING THEREON OVER A PATH, THEREAFTER AT A POSITION SPACED FROM THE POSITION WHERE THE FLUID COATING WAS APPLIED TO THE WEB ENGAGING AN UNSUPPORTED END OF A SHEET OF THIN FLEXIBLE MATERIAL WITH THE STILL FLUID COATING OVER A SUBSTANTIAL AREA IN THE DIRECTION OF TRAVEL OF THE WEB, SAID MATERIAL BEING WET BY THE FLUID COATING AND HELD THEREAGAINST SUBSTANTIALALY BY THE WETTING ACTION ALONE, HOLDING THE OTHER END OF THE SHEET OF MATERIAL AGAINST MOVEMENT, AND CONTINUOUSLY MOVING THE WEB AND FLUID COATING PAST THE MATERIAL TO SMOOTH THE COATING ON THE WEB.
US175070A 1962-02-23 1962-02-23 Method for smoothing a coated web Expired - Lifetime US3352706A (en)

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US175070A US3352706A (en) 1962-02-23 1962-02-23 Method for smoothing a coated web
FR925548A FR1348216A (en) 1962-02-23 1963-02-21 Method for removing excess fluid from the surface of a strip
GB7188/63A GB1029987A (en) 1962-02-23 1963-02-22 A method of decreasing the thickness of a layer of liquid on a web

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381506A (en) * 1966-08-19 1968-05-07 Du Pont Liquid-stripper bar
US4008684A (en) * 1975-01-10 1977-02-22 Stork Brabant B.V. Device for applying a layer of a viscous substance
US4208230A (en) * 1977-07-25 1980-06-17 Ameron, Inc. Impregnating a fibrous web with liquid
US4327130A (en) * 1978-02-23 1982-04-27 International Business Machines Corporation Method and apparatus for forming a coating on both sides of a substrate
US4345543A (en) * 1978-02-23 1982-08-24 International Business Machines Corporation Apparatus for forming a coating on a substrate
EP0198622A1 (en) * 1985-04-01 1986-10-22 Ecc International Limited Paper coating apparatus and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2217801A1 (en) * 1996-11-01 1998-05-01 Kenneth L. Jones Improved apparatus and method for applying a viscous liquid to a material surface

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE364886C (en) * 1922-12-05 Hannoversche Maschinen Und App Dusting device for bronzing machines with wiping bodies guided by endless conveyors across the paper web
US2326249A (en) * 1940-09-26 1943-08-10 United Shoe Machinery Corp Cementing machine
US2774329A (en) * 1954-01-25 1956-12-18 E B Eddy Company Wiping or doctoring devices for removing excess coating from sheet material
US2995469A (en) * 1957-08-21 1961-08-08 Du Pont Apparatus and process for coating a flexible web
US3081191A (en) * 1959-02-18 1963-03-12 Mead Corp Doctor blade
US3181500A (en) * 1960-01-25 1965-05-04 Minnesota & Ontario Paper Co Apparatus for the production of coated paper

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE364886C (en) * 1922-12-05 Hannoversche Maschinen Und App Dusting device for bronzing machines with wiping bodies guided by endless conveyors across the paper web
US2326249A (en) * 1940-09-26 1943-08-10 United Shoe Machinery Corp Cementing machine
US2774329A (en) * 1954-01-25 1956-12-18 E B Eddy Company Wiping or doctoring devices for removing excess coating from sheet material
US2995469A (en) * 1957-08-21 1961-08-08 Du Pont Apparatus and process for coating a flexible web
US3081191A (en) * 1959-02-18 1963-03-12 Mead Corp Doctor blade
US3181500A (en) * 1960-01-25 1965-05-04 Minnesota & Ontario Paper Co Apparatus for the production of coated paper

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381506A (en) * 1966-08-19 1968-05-07 Du Pont Liquid-stripper bar
US4008684A (en) * 1975-01-10 1977-02-22 Stork Brabant B.V. Device for applying a layer of a viscous substance
US4208230A (en) * 1977-07-25 1980-06-17 Ameron, Inc. Impregnating a fibrous web with liquid
US4327130A (en) * 1978-02-23 1982-04-27 International Business Machines Corporation Method and apparatus for forming a coating on both sides of a substrate
US4345543A (en) * 1978-02-23 1982-08-24 International Business Machines Corporation Apparatus for forming a coating on a substrate
EP0198622A1 (en) * 1985-04-01 1986-10-22 Ecc International Limited Paper coating apparatus and method

Also Published As

Publication number Publication date
GB1029987A (en) 1966-05-18
FR1348216A (en) 1964-01-04

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