GB1219802A - Improvements in and relating to sheet material - Google Patents

Improvements in and relating to sheet material

Info

Publication number
GB1219802A
GB1219802A GB88968A GB88968A GB1219802A GB 1219802 A GB1219802 A GB 1219802A GB 88968 A GB88968 A GB 88968A GB 88968 A GB88968 A GB 88968A GB 1219802 A GB1219802 A GB 1219802A
Authority
GB
United Kingdom
Prior art keywords
slurry
web
starch
jan
deposited
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
GB88968A
Inventor
Lester Laszlo Spiller
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.)
Ransburg Corp
Original Assignee
Ransburg Corp
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 Ransburg Corp filed Critical Ransburg Corp
Publication of GB1219802A publication Critical patent/GB1219802A/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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/28—Starch
    • 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
    • D21H23/50—Spraying or projecting

Landscapes

  • Paper (AREA)

Abstract

1,219,802. Papermaking; electrostatic deposition. RANSBURG ELECTRO-COATING CORP. 5 Jan., 1968 [5 Jan., 1967], No. 889/68. Headings D1L, D2A and D2B. Fibrous cellulosic sheet material, e.g. paperboard or newsprint, as a wet web is sized by electrostatically charging atomized droplets of a slurry of ungelatinized granular starch, to deposit the particles on the wet web, dewatering and heating to assist gelatinization. The starch may be modified to reduce its gelatinization temperature, e.g. by surface hydroxyethylation. The liquid of the slurry is preferably water, but this may be replaced wholly or in part by glycols or polyglycols; glycerine and pentaerythritol can be added. The slurry may also contain surfactants, pigments, fillers, latices of styrene-butadiene copoloymers or emulsions of polyvinyl chloride. As shown, the slurry is circulated through conduits 22 to spray guns 23 above a web P of paper between the first and second wet presses of a paper machine. A valve in each spray gun is controlled through a control tube 24. The slurry is forced out of the guns by the pressure in the conduit, atomized and electrostatically charged by an electrode (33, Fig. 2 not shown). The web is effectively earthed and so the slurry is deposited at 25. Alternatively, it may be deposited on the wire side at 26, between the press and drier sections, between first and second drier sections or even before the couch, or both sides may be treated. The invention may also be used with cylinder or other machines. Very small amounts of starch can be applied uniformly by this technique.
GB88968A 1967-01-05 1968-01-05 Improvements in and relating to sheet material Expired GB1219802A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60748167A 1967-01-05 1967-01-05

Publications (1)

Publication Number Publication Date
GB1219802A true GB1219802A (en) 1971-01-20

Family

ID=24432474

Family Applications (1)

Application Number Title Priority Date Filing Date
GB88968A Expired GB1219802A (en) 1967-01-05 1968-01-05 Improvements in and relating to sheet material

Country Status (6)

Country Link
CH (1) CH479771A (en)
DE (1) DE1611787B2 (en)
FI (1) FI51380C (en)
FR (1) FR1550034A (en)
GB (1) GB1219802A (en)
SE (1) SE348507B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6494954B1 (en) 1997-05-27 2002-12-17 Voith Sulzer Papiermaschinen Gmbh Method and apparatus for directly or indirectly applying a liquid or pasty application medium to one or both sides of a continuous surface
WO2006013173A2 (en) * 2004-08-03 2006-02-09 Voith Patent Gmbh Method for applying a liquid or pasty application medium to a continuous paper or cardboard web, and paper or cardboard machine for carrying out said method
WO2006037774A1 (en) * 2004-10-05 2006-04-13 Voith Patent Gmbh Method for producing a fibrous material web
WO2008023093A1 (en) 2006-08-24 2008-02-28 Stora Enso Oyj Method for coating a paper surface and a product thus obtained
CN106400593A (en) * 2016-06-24 2017-02-15 广西金桂浆纸业有限公司 A starch spraying device used for a laboratory

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023106574A1 (en) 2023-03-16 2024-09-19 Voith Patent Gmbh Application nozzle, former and use

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6494954B1 (en) 1997-05-27 2002-12-17 Voith Sulzer Papiermaschinen Gmbh Method and apparatus for directly or indirectly applying a liquid or pasty application medium to one or both sides of a continuous surface
WO2006013173A2 (en) * 2004-08-03 2006-02-09 Voith Patent Gmbh Method for applying a liquid or pasty application medium to a continuous paper or cardboard web, and paper or cardboard machine for carrying out said method
WO2006013173A3 (en) * 2004-08-03 2007-01-25 Voith Patent Gmbh Method for applying a liquid or pasty application medium to a continuous paper or cardboard web, and paper or cardboard machine for carrying out said method
WO2006037774A1 (en) * 2004-10-05 2006-04-13 Voith Patent Gmbh Method for producing a fibrous material web
WO2008023093A1 (en) 2006-08-24 2008-02-28 Stora Enso Oyj Method for coating a paper surface and a product thus obtained
CN106400593A (en) * 2016-06-24 2017-02-15 广西金桂浆纸业有限公司 A starch spraying device used for a laboratory

Also Published As

Publication number Publication date
FR1550034A (en) 1968-12-13
SE348507B (en) 1972-09-04
CH479771A (en) 1969-10-15
FI51380B (en) 1976-08-31
DE1611787B2 (en) 1976-12-23
DE1611787A1 (en) 1971-03-25
FI51380C (en) 1976-12-10

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