US3705049A - Method for the manufacture of double coated sheets with pressure-rupturable materials - Google Patents

Method for the manufacture of double coated sheets with pressure-rupturable materials Download PDF

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Publication number
US3705049A
US3705049A US3705049DA US3705049A US 3705049 A US3705049 A US 3705049A US 3705049D A US3705049D A US 3705049DA US 3705049 A US3705049 A US 3705049A
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US
United States
Prior art keywords
coating
paper
clay
web
emulsion
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
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English (en)
Inventor
Thomas W Busch
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.)
Appvion LLC
Original Assignee
Appleton Papers 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
Application filed by Appleton Papers Inc filed Critical Appleton Papers Inc
Application granted granted Critical
Publication of US3705049A publication Critical patent/US3705049A/en
Assigned to APPLETON PAPERS INC. reassignment APPLETON PAPERS INC. MERGER (SEE DOCUMENT FOR DETAILS). FILED 12/1781, EFFECTIVE DATE: 01/02/82 STATE OF INCORP. DE Assignors: GERMAINE MONTEIL COSMETIQUES CORPORATION (CHANGED TO APPLETON PAPERS), TUVACHE, INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
    • B41M5/1246—Application of the layer, e.g. by printing
    • 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
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249962—Void-containing component has a continuous matrix of fibers only [e.g., porous paper, etc.]
    • Y10T428/249963—And a force disintegratable component [e.g., stencil sheet, etc.]
    • 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
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249967—Inorganic matrix in void-containing component
    • Y10T428/249969—Of silicon-containing material [e.g., glass, etc.]

Definitions

  • This invention relates to the art of coated paper, and more particularly to the method for the fabrication of a manifold sheet having two separate coatings on one side of the sheet in which one of the coatings is formulated of a pressure sensitive material of the type described in the patents hereinafter set forth.
  • the paper is used in a manifold assembly in which the top sheet in the assembly is fabricated with only its underside coated with the emulsion coating, while the bottom sheet in the assembly is coated on its top side with only the clay coating. All of the sheets in between are coated on the underside with emulsion coating and on the top side with the clay or mineral coating in two sidecoated sheets.
  • an impression on the top sheet ruptures the capsules contained on the underside of each of the sheets whereby the encapsulated liquid thereby released wets out the adjacent clay coating to develop the image.
  • micro-capsules are pressure sensitive and are capable of being ruptured in response to pressure of the magnitude encountered in mechanical nips of a paper machine, it has been the practice to make application of the microcapsular system as a separate operation applied 3,705,049 Patented Dec. 5, 1972 ice onto the previously fabricated paper base sheet.
  • the described off-the-machine coating of the microcapsular system poses a number of requirements including (1) additional machinery for such separate off-the-machine coating; (2) additional floor space for such separate operations and equipment; (3) movement of paper from the paper making machine to the described separate coating operation in which packaging, shipping and labor represent additional costs; (4) additional waste resulting from a two-stage process, and (5) procurement of paper as a separate commodity with its attendant costs, etc.
  • the methods as described in the aforementioned copending applications are adapted to form the mineral or clay coating and the emulsion on opposite sides of the paper web or sheet.
  • they are not applicable to a type of coated paper sheet which is known to the art as self-contained paper.
  • the so-called selfcontained paper is a variation of carbonless copy paper of the type described above in which both the emulsion coating and the clay coating are formed on the same side of the paper sheet with the emulsion coating being laid down prior to the clay coating.
  • paper of this type can be used by placing it on the underside of a sheet of untreated paper whereby an impression made on the untreated paper causes rupture in the capsule coating of the treated paper whereby the fluid released thereby wets out the clay in the coating overlaying the emulsion coating on the treated sheet to develop the image.
  • FIG. 1 is a schematic elevational view of a coating method embodying the concepts of the invention
  • FIG. 2 is an enlarged view, partially in section, of a double coated paper sheet produced in accordance with the method illustrated in FIG. 1.
  • the emulsion coating is formulated of an aqueous composition containing rupturable microscopic capsules of tanned gelatin containing a liquid colorforming ingredient, such as a colorless dyestuff dissolved in an organic solvent.
  • a liquid colorforming ingredient such as a colorless dyestuff dissolved in an organic solvent.
  • a substantial amount (up to 50% by weight of the capsules) of a coarse, solid particulate material such as kaolin clay and/or cellulose fibers suspended with the rupturable capsules and in which a small of water-soluble binder may be dissolved in the aqueous medium.
  • the clay coating comprises an aqueous system having an acid reacting mineral clay, such as attapulgite clay, or microfine solid particles of an oil-soluble, acid-reactant organic polymer, in finely divided form, suspended therein, with or without other fillers such as calcium carbonate, silica gel, satin white and the like, and a small amount of natural or resinous binder.
  • an acid reacting mineral clay such as attapulgite clay
  • microfine solid particles of an oil-soluble, acid-reactant organic polymer in finely divided form, suspended therein, with or without other fillers such as calcium carbonate, silica gel, satin white and the like, and a small amount of natural or resinous binder.
  • the paper raw stock such as ll-pound manifolding bond
  • the paper raw stock is supplied in the form of rolls mounted for free rotational movement on a spindle 12 supported on the unwind stand 14.
  • the web 16 of raw stock paper is passed from the roll 10 over a series of idler rollers and guide rollers 18 to a first coating station 20.
  • the first coating station comprises an applicator roll 22 in communication with a transfer roll 24 and a metering roll 26, the bottom portion of the transfer roll being immersed in a bath of the emulsion coating composition in pan 28.
  • the applicator roll 22 engages the bottom side of the paper web 16 as it passes between guide roll 30 and leveling roll 32 to apply an excess of the emulsion coating composition to the bottom side of the paper web.
  • An amount of emulsion coating composition corresponding to a controlled excess above 4 /2 pounds per 3300 square feet is applied by the applicator and metering system at this first station.
  • the one side coated web is advanced directly to an air knife 34 which cooperates with the backing roll 36 to meter the coating to about 4 /2 pounds per 3300 square feet of the paper and to uniformly distribute the coating composition over the surface thereof.
  • the paper web which has been turned about the roller 36, to position the coated side uppermost, is advanced through one section 42 of a drying oven maintained at a temperature of about 200 F. or higher while supported on an endless belt 44.
  • the upper run of the belt is supported on rollers 46 arranged in a substantially arcuate path through the dryer and, for this purpose, it is preferred to make use of a foraminous belt or a belt formed of a vapor permeable material to enable the escape of water vapor therethrough when released from the coating.
  • the endless belt 44 turns about rollers 48 and 50 outside the dryer and the return run passes through the dryer section to maintain temperature while being supported on a bottom run of rollers 52 provided with a take-up roller 54 for maintaining the proper tension in the supporting belt.
  • the paper base 16 with the dried emulsion coating 60 on the top side thereof is passed from the drying oven 42 over a series of guide rollers and tcnsioning roller 62 and then over an assembly of turnover bars 61, 63 and 65, which operate to turn over the continuous web whereby the top side containing the dried emulsion coating is on the underside of the sheet and ready for the second coating step.
  • Any arrangement of commercially available turnover bars may be used in accordance with the practice of the invention. As is known by those skilled in the art, such turnover bars generally include an assembly of three rollers or bars, two of which are inclined with respect to horizontal and vertical axis.
  • the web having the treated emulsion coating on the underside thereof is passed over a roller 67 to the second coating station, which is constructed similarly to the first coating station in that it comprises an upper applicator roller 66 in accordance with the underside of the web as the web passes between leveling roller 68 and guide roll 70.
  • the applicator roller 66 is supported between a transfer roller 72 and a metering roller 74 which takes up coating composition from a bath in the coating pan 76 in which the bottom portion of the transfer roller is immersed.
  • the applicator roller is adjusted to apply the clay coating composition to the underside of the web overlaying the dried emulsion coating composition to a coating weight in a controlled excess of about 4.5 pounds per 3300 square feet.
  • the coated web is advanced to a second air knife 78 and over the roller 80 which again operates in combination to meter to about 4.5 pounds per 3300 square feet the amount of coating composition allowed to remain on the web and to distribute the clay coating overlaying the dried emulsion coating composition uniformly across the web.
  • the upper run of the belt is supported on longitudinally spaced-apart crosswise extending rollers 90 arranged in an arcuate path through the dryer.
  • the belt continues to support the Web for a short distance beyond the exit of the dryer. Thereafter, the belt turns downwardly and back about rollers which lead through the dryer to a take up roller 92 which is provided outside the dryer for adjusting the tension of the belt; as with the belt 44, it is preferred to make use of a vapor permeable belt to enable the escape of vapors therethrough during passage through the dryer.
  • the web 16 containing the dried clay coating 94 overlaying the dried emulsion coating 60 is passed over a series of guide rollers and tension rollers 96 to a wind up roller 98 mounted on a winder stand 100 and powered to wind the coated web into the roller.
  • the Web is drawn through the coating apparatus and dryer, and reel tension is developed in the wind up roller section.

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  • Color Printing (AREA)
  • Paper (AREA)
US3705049D 1970-08-31 1970-08-31 Method for the manufacture of double coated sheets with pressure-rupturable materials Expired - Lifetime US3705049A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6841770A 1970-08-31 1970-08-31

Publications (1)

Publication Number Publication Date
US3705049A true US3705049A (en) 1972-12-05

Family

ID=22082444

Family Applications (1)

Application Number Title Priority Date Filing Date
US3705049D Expired - Lifetime US3705049A (en) 1970-08-31 1970-08-31 Method for the manufacture of double coated sheets with pressure-rupturable materials

Country Status (6)

Country Link
US (1) US3705049A (enExample)
BE (1) BE772031A (enExample)
CA (1) CA945444A (enExample)
DE (1) DE2143636B2 (enExample)
FR (1) FR2106219A5 (enExample)
GB (1) GB1336800A (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988492A (en) * 1974-04-18 1976-10-26 The Mead Corporation Pressure sensitive copy paper employing pyrazoloxanthene compounds
US4254971A (en) * 1979-06-08 1981-03-10 Engelhard Minerals & Chemicals Corporation Pressure-sensitive record material and preparation thereof
US5597612A (en) * 1992-07-27 1997-01-28 Stora Feldmuhle Ag Process for the manufacture of paper webs having CF or CB layers for pressure-sensitive recording

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988492A (en) * 1974-04-18 1976-10-26 The Mead Corporation Pressure sensitive copy paper employing pyrazoloxanthene compounds
US4254971A (en) * 1979-06-08 1981-03-10 Engelhard Minerals & Chemicals Corporation Pressure-sensitive record material and preparation thereof
US5597612A (en) * 1992-07-27 1997-01-28 Stora Feldmuhle Ag Process for the manufacture of paper webs having CF or CB layers for pressure-sensitive recording

Also Published As

Publication number Publication date
CA945444A (en) 1974-04-16
GB1336800A (en) 1973-11-07
FR2106219A5 (enExample) 1972-04-28
DE2143636B2 (de) 1974-12-12
DE2143636A1 (de) 1972-03-23
BE772031A (fr) 1971-12-31

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Owner name: APPLETON PAPERS INC.

Free format text: MERGER;ASSIGNORS:TUVACHE, INC.;GERMAINE MONTEIL COSMETIQUES CORPORATION (CHANGED TO APPLETON PAPERS);REEL/FRAME:004108/0262

Effective date: 19811215

STCF Information on status: patent grant

Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES)