DE3071691D1 - Paper coating method and apparatus - Google Patents

Paper coating method and apparatus

Info

Publication number
DE3071691D1
DE3071691D1 DE8080303958T DE3071691T DE3071691D1 DE 3071691 D1 DE3071691 D1 DE 3071691D1 DE 8080303958 T DE8080303958 T DE 8080303958T DE 3071691 T DE3071691 T DE 3071691T DE 3071691 D1 DE3071691 D1 DE 3071691D1
Authority
DE
Germany
Prior art keywords
blade
web
paper
coating material
coating
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
DE8080303958T
Other languages
German (de)
Inventor
Wayne A Damrau
James C Gauss
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.)
NewPage Wisconsin System Inc
Original Assignee
Consolidated 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8187291&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3071691(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Consolidated Papers Inc filed Critical Consolidated Papers Inc
Application granted granted Critical
Publication of DE3071691D1 publication Critical patent/DE3071691D1/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
    • 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
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • D21H23/40—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper only one side of the paper being in contact with the material
    • 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
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
    • 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
    • D21H5/0012—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating by bringing paper into contact with an excess of fluids, the paper carrying away only a part of the fluid material, e.g. by passing through liquids, gases or vapours
    • D21H5/0015—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating by bringing paper into contact with an excess of fluids, the paper carrying away only a part of the fluid material, e.g. by passing through liquids, gases or vapours only one side of the paper being in contact with the treating medium, e.g. paper carried by support

Abstract

This invention relates to a method, and apparatus of the blade type, for applying a coating material to a web of paper. A conventional coater of the blade type includes means for applying coating to a paper web supported and carried by a resilient backing roll (24), together with a flexible doctor blade (98) located some distance from and on the trailing side of the applicator (20), which serves to level the applied coating. In order to achieve low coat weights, i.e. in the order of 3 to 4.5 grams per square metre per side of paper, it is necessary to increase the pressure of the blade (98) against the web (26), which results in a high rate of wear, and increases the possibility of web breakage and streaking caused by foreign particles being caught between the blade (98) and the web (26). The present invention utilizes a reservoir (80) of liquid coating material between a forward liquid seal and a rearward doctor blade (98) spaced a short distance from the seal. The coating material is applied under pressure so as to form and maintain the liquid seal. This provides a short dwell time, low coat weights, low blade pressures, and excellent results.
DE8080303958T 1980-11-06 1980-11-06 Paper coating method and apparatus Expired DE3071691D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80303958A EP0051698B2 (en) 1980-11-06 1980-11-06 Paper coating method and apparatus

Publications (1)

Publication Number Publication Date
DE3071691D1 true DE3071691D1 (en) 1986-09-11

Family

ID=8187291

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8080303958T Expired DE3071691D1 (en) 1980-11-06 1980-11-06 Paper coating method and apparatus

Country Status (3)

Country Link
EP (1) EP0051698B2 (en)
AT (1) ATE21222T1 (en)
DE (1) DE3071691D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4887547A (en) * 1985-07-31 1989-12-19 Jagenberg Aktiengesellschaft Apparatus for continuously applying a uniform coating to a material web
DE19603861C1 (en) * 1996-02-03 1997-07-31 Jagenberg Papiertech Gmbh Device for coating a material web, in particular a paper or cardboard web
DE19719128A1 (en) * 1997-05-07 1998-11-12 Jagenberg Papiertech Gmbh Device for applying coating material
CN108262219B (en) * 2018-03-27 2023-04-28 深圳市世椿智能装备股份有限公司 Liquid sealing type valve assembly

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3273536A (en) * 1961-06-26 1966-09-20 Time Inc Trailing-blade coater including fluid seal
GB1048829A (en) * 1963-12-10 1966-11-23 Ilford Ltd High speed coating apparatus
GB1266745A (en) * 1969-06-11 1972-03-15
SE419946B (en) * 1974-10-16 1981-09-07 Inventing Ab SET AND DEVICE FOR COATING A CURRENT COAT
US4063531A (en) * 1976-02-03 1977-12-20 Beloit Corporation Coater for both sides of traveling web
US4167914A (en) * 1977-05-25 1979-09-18 Bolton-Emerson, Inc. Rotating rod, rotating press roll nip coating apparatus

Also Published As

Publication number Publication date
ATE21222T1 (en) 1986-08-15
EP0051698B2 (en) 1994-08-17
EP0051698A1 (en) 1982-05-19
EP0051698B1 (en) 1986-08-06

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8366 Restricted maintained after opposition proceedings