GB379833A - Improvements in or relating to mineral coated paper - Google Patents

Improvements in or relating to mineral coated paper

Info

Publication number
GB379833A
GB379833A GB22534/31A GB2253431A GB379833A GB 379833 A GB379833 A GB 379833A GB 22534/31 A GB22534/31 A GB 22534/31A GB 2253431 A GB2253431 A GB 2253431A GB 379833 A GB379833 A GB 379833A
Authority
GB
United Kingdom
Prior art keywords
coating
paper
roller
doctor
speeds
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
GB22534/31A
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.)
CHAMPION COATED PAPER Co
Original Assignee
CHAMPION COATED PAPER Co
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
Priority to DEC45185D priority Critical patent/DE591442C/en
Application filed by CHAMPION COATED PAPER Co filed Critical CHAMPION COATED PAPER Co
Priority to FR721195D priority patent/FR721195A/en
Priority to GB22534/31A priority patent/GB379833A/en
Priority to US581752A priority patent/US1936286A/en
Publication of GB379833A publication Critical patent/GB379833A/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
    • 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
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/2457—Parallel ribs and/or grooves

Landscapes

  • Paper (AREA)

Abstract

379,833. Mineral-coated paper; coating webs. POTTS, H. E., 12, Church Street, Liverpool.-(Champion Coated Paper Co. ; Hamilton, Ohio, U.S.A.) Aug. 10, 1931, No. 22534 [Classes 96 and 140.] Paper, postcard, cardboard in a wet condition is coated by applying an aqueous mixture of at least 2/3 clay, satin white, blanc fixe and the like and not more than 1/3 casein, starch, glue and the like to the moving paper &c. or to an intermediate moving surface and removing the excess mixture by a doctor surface which is continuously cleaned and which moves in the opposite direction and at a speed above that at which the coating is ridged and below that at which it is frothy. The paper P, which has been moistened by steam &c. or by prior application of excess coating, passes over a roller A and excess coating C is removed by a doctor roller D, which is scraped by a doctor W of rubber, soft metal, &c., the coating C being supplied by a pipe. The rollers A, D are of non-absorbent material, e.g. steel and are in clockwise rotation. At low speeds of the roller D ridges are produced in the coating, and as the speed increases relative to that of the paper the ridges become less pronounced and closer together, the coating then becomes uniform, then streaky, then wavy or rippled and finally smooth but frothy, the coated paper having a pinhole effect. Rippled coatings are thus produced for " art " papers. The nature of the effects varies with the speeds, the coating composition, the distance apart of the rollers &c., the ridges occurring when the doctor speed is 1/7 and the ripples when it about equals that of the moving surface. In examples for paper speeds of 100 and 500 ft. per min., the ranges of doctor speeds for smooth coatings are 40 to 72 feet per min. and 136 to 214 feet per min. respectively. In alternative forms the roller A or the roller D is substituted by a travelling band or the coating is applied to the surface of the roller A and wiped off by the paper web which contacts with its surface and moves in the opposite direction.
GB22534/31A 1931-07-29 1931-08-10 Improvements in or relating to mineral coated paper Expired GB379833A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DEC45185D DE591442C (en) 1931-07-29 1931-08-02 Method and device for the production of coated paper
FR721195D FR721195A (en) 1931-07-29 1931-08-10 Paper bonding process using mineral plasters and resulting products
GB22534/31A GB379833A (en) 1931-07-29 1931-08-10 Improvements in or relating to mineral coated paper
US581752A US1936286A (en) 1931-07-29 1931-12-17 Mineral coated paper

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CA1936286X 1931-07-29
DEC45185D DE591442C (en) 1931-07-29 1931-08-02 Method and device for the production of coated paper
FR721195T 1931-08-10
GB22534/31A GB379833A (en) 1931-07-29 1931-08-10 Improvements in or relating to mineral coated paper

Publications (1)

Publication Number Publication Date
GB379833A true GB379833A (en) 1932-09-08

Family

ID=25683193

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22534/31A Expired GB379833A (en) 1931-07-29 1931-08-10 Improvements in or relating to mineral coated paper

Country Status (4)

Country Link
US (1) US1936286A (en)
DE (1) DE591442C (en)
FR (1) FR721195A (en)
GB (1) GB379833A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE976092C (en) * 1941-07-24 1963-02-21 Champion Paper Co Ltd Process for the production of coated paper dried on a glass surface
US2434709A (en) * 1944-04-29 1948-01-20 Russell R Matthews Nonslip textile article
GB759157A (en) * 1953-07-21 1956-10-17 Caribonum Ltd Improvements in or relating to the production of written matter
US3092513A (en) * 1958-08-07 1963-06-04 St Regis Paper Co Apparatus for applying adhesive to carton blanks
US3224897A (en) * 1960-08-19 1965-12-21 Mead Corp Method and apparatus for producing cast coated paper

Also Published As

Publication number Publication date
FR721195A (en) 1932-02-29
DE591442C (en) 1934-01-22
US1936286A (en) 1933-11-21

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