GB539706A - Molded article and process of production - Google Patents

Molded article and process of production

Info

Publication number
GB539706A
GB539706A GB2293/40A GB229340A GB539706A GB 539706 A GB539706 A GB 539706A GB 2293/40 A GB2293/40 A GB 2293/40A GB 229340 A GB229340 A GB 229340A GB 539706 A GB539706 A GB 539706A
Authority
GB
United Kingdom
Prior art keywords
lbs
mixture
moulded
fibres
pitch
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
GB2293/40A
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.)
FED ELECTRIC Co Inc
Original Assignee
FED ELECTRIC Co 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 FED ELECTRIC Co Inc filed Critical FED ELECTRIC Co Inc
Publication of GB539706A publication Critical patent/GB539706A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J1/00—Fibreboard
    • D21J1/08—Impregnated or coated fibreboard

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Paper (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

539,706. Moulded paper pulp. FEDERAL ELECTRIC CO., Inc. Feb. 6, 1940, No. 2293. Convention date, Feb. 6, 1939. [Class 96] [Also in Group V] Gramophone turntables, protective guards, trays, sheet materials &c. are moulded from fibrous pulps, e.g. paper stock by mixing the felted fibres with a binder comprising the complex resinous material remaining after pine wood pitch has been extracted to remove turpentine, resin &c. The melting point of the pitch extract may be raised by forming a condensation product therefrom as described in U.S.A. Specification 2,115,496 or by adding metal oxides or hydroxides, e.g. zinc oxide. The mixture is preferably defiberised in known manner by beating in a Hollander to which the binder and a wetting or dispersing agent is added. A mixture comprising 14 lbs. kraft cuttings, 18 lbs. formaldehyde-hardened pitch extract, 11¢ ozs. Paris Black &c. is specified and is adjusted to a Ph of 4.5 by addition of alum. The mixture is built up to the required form by immersing a bell-shaped vessel 18 supporting a wire-mesh screen 20 in the pulp solution contained in a vessel 10 and applying suction through a conduit 16 to draw the fibres through the screen and deposit the fibres thereon. The built-up shell is then removed, dried and moulded between dies 24, 26 which may be heated, e.g. to, 300-315‹F. at 1500-2000 lbs. per sq. inch pressure.
GB2293/40A 1939-02-06 1940-02-06 Molded article and process of production Expired GB539706A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US539706XA 1939-02-06 1939-02-06

Publications (1)

Publication Number Publication Date
GB539706A true GB539706A (en) 1941-09-22

Family

ID=21987823

Family Applications (2)

Application Number Title Priority Date Filing Date
GB2293/40A Expired GB539706A (en) 1939-02-06 1940-02-06 Molded article and process of production
GB11662/40A Expired GB541670A (en) 1939-02-06 1940-07-12 Improvements in or relating to impregnated fibrous products and methods of making same

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB11662/40A Expired GB541670A (en) 1939-02-06 1940-07-12 Improvements in or relating to impregnated fibrous products and methods of making same

Country Status (1)

Country Link
GB (2) GB539706A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544887A (en) * 1946-05-18 1951-03-13 Jr Arthur G Leonard Manufacture of waterproof paper
US3193449A (en) * 1962-03-23 1965-07-06 Hercules Powder Co Ltd Emulsion size consisting of a terpene resin and a reaction product of a terpine resin and use for sizing paper
CN108086060A (en) * 2017-12-13 2018-05-29 向孙团 A kind of crop straws for producing process of plant fiber pulp processing method
CN113089382B (en) * 2021-03-12 2022-08-09 海南大学 Self-gluing fully-degradable organic covering pad and manufacturing method thereof

Also Published As

Publication number Publication date
GB541670A (en) 1941-12-05

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