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GB456746A - Method and means for smoothing mobile films upon webs - Google Patents

Method and means for smoothing mobile films upon webs

Info

Publication number
GB456746A
GB456746A GB1402935A GB1402935A GB456746A GB 456746 A GB456746 A GB 456746A GB 1402935 A GB1402935 A GB 1402935A GB 1402935 A GB1402935 A GB 1402935A GB 456746 A GB456746 A GB 456746A
Authority
GB
United Kingdom
Prior art keywords
web
coating
fluid
pressure
paper
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
Application number
GB1402935A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1402935A priority Critical patent/GB456746A/en
Publication of GB456746A publication Critical patent/GB456746A/en
Expired legal-status Critical Current

Links

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
    • D21H25/16—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with a blast of vapour or gas, e.g. air knife
    • 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
    • D21H5/007—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 a blast of gas or vapour, e.g. air knife

Landscapes

  • Paper (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

In a process for equalizing and smoothing the coating on a coated web, e.g. paper, by a pressure fluid directed against the web, pressure is exerted over the entire width of the web transversely of its direction of travel and at <PICT:0456746/IV/1> <PICT:0456746/IV/2> <PICT:0456746/IV/3> right angles to the plane of the web. Coating liquid from a vat 5 is applied to a web 3 travelling over a platform 1 by coating mechanism 4, e.g. brushes, rolls, or sprays, and is smoothed by fluid discharged under pressure from devices 6 fed by pipes 7, 8 from a compressor 11. The "air-knife" 6, Fig. 2, comprises an outer tube 13 provided with a longitudinal slit 15 defined by flanges 16 and an inner perforated tube 14 which is supplied with the pressure fluid from each end 7. The pressure in the tube 13 may be equalized by providing apertures 15<1>, Fig. 3, which progressively increase in area from the point of intersection of the fluid. Instead of the elongated slit 15, the fluid may be discharged through a series of perforations or discontinuous, inclined, or transversely disposed slits. The "air-knives" may be oscillated longitudinally in known manner. The pressure fluid may be air, heated or cooled or impregnated with a vapour such as alcohol and may be applied intermittently to the coating in making water marks on paper by varying the distribution of the coating. The process may be applied in making tinted paper directly on a paper making machine. Specification 12141/12, [Class 140], is referred to.
GB1402935A 1935-05-13 1935-05-13 Method and means for smoothing mobile films upon webs Expired GB456746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1402935A GB456746A (en) 1935-05-13 1935-05-13 Method and means for smoothing mobile films upon webs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1402935A GB456746A (en) 1935-05-13 1935-05-13 Method and means for smoothing mobile films upon webs

Publications (1)

Publication Number Publication Date
GB456746A true GB456746A (en) 1936-11-13

Family

ID=10033696

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1402935A Expired GB456746A (en) 1935-05-13 1935-05-13 Method and means for smoothing mobile films upon webs

Country Status (1)

Country Link
GB (1) GB456746A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508523A (en) * 1967-05-15 1970-04-28 Plywood Research Foundation Apparatus for applying adhesive to wood stock
US4390120A (en) * 1980-12-15 1983-06-28 Bell Telephone Laboratories, Incorporated Soldering methods and apparatus
FR2768443A1 (en) * 1997-09-15 1999-03-19 Arjo Wiggins Papiers Couches COATED PAPER HAVING A WATCH-LIKE MARK AND MANUFACTURING METHOD

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508523A (en) * 1967-05-15 1970-04-28 Plywood Research Foundation Apparatus for applying adhesive to wood stock
US4390120A (en) * 1980-12-15 1983-06-28 Bell Telephone Laboratories, Incorporated Soldering methods and apparatus
FR2768443A1 (en) * 1997-09-15 1999-03-19 Arjo Wiggins Papiers Couches COATED PAPER HAVING A WATCH-LIKE MARK AND MANUFACTURING METHOD
WO1999014433A1 (en) * 1997-09-15 1999-03-25 Arjo Wiggins Papiers Couches S.A. Coated paper comprising a pseudo-watermark and method for making same
US6630055B1 (en) 1997-09-15 2003-10-07 Arjo Wiggins Papiers Couches Coated paper including a pseudo-watermark, and a method of manufacture

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