GB832621A - Improvements in and connected with impregnated paper - Google Patents

Improvements in and connected with impregnated paper

Info

Publication number
GB832621A
GB832621A GB617756A GB617756A GB832621A GB 832621 A GB832621 A GB 832621A GB 617756 A GB617756 A GB 617756A GB 617756 A GB617756 A GB 617756A GB 832621 A GB832621 A GB 832621A
Authority
GB
United Kingdom
Prior art keywords
roll
resin
web
wire
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
GB617756A
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.)
Fairweather Harold G C
Original Assignee
Fairweather Harold G C
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 Fairweather Harold G C filed Critical Fairweather Harold G C
Priority to GB617756A priority Critical patent/GB832621A/en
Publication of GB832621A publication Critical patent/GB832621A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/02—Complete machines for making continuous webs of paper of the Fourdrinier type
    • 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse

Landscapes

  • Cell Separators (AREA)

Abstract

832,621. Resin-impregnated paper; battery separators. FAIRWEATHER, H. G. C. (Riegel Paper Corporation). Feb. 28, 1956, No. 6177/56. Class 96. In making permeable paper having a very large number of minute pores, cellulosic fibres having a maximum diameter of 20 microns, e.g. cotton linters, are made into an aqueous pulp in a hydropulper 1 and a refiner 2. The pulp is diluted with water and fed into the flow-box 20 of a Fourdrinier papermaking machine having a wire 12 travelling in a triangular path around a breast roll 13, a supporting roll 14 and a suction couch roll 15; a supporting roll 17 and a stretch roll 16 being provided along the lowermost run of the wire. The diluted pulp is fed on to the upwardlyinclined portion of the wire from an extension 21 of the flow-box to form a paper web. Some water is removed from the web by suctionboxes 18 and 19. The web is transferred by a roll 24 on to an endless travelling felt 4, on which it is pressed by small rolls 6, and passes on to a travelling endless wire or felt 25, which carries the wet web around a roll 28 and through an aqueous solution of phenol-formaldehyde resin, in the " A " stage of condensation, contained in a tank 7, and then around a roll 27. The resin-impregnated web is then transferred to an endless travelling wire 8. Excess resin solution is removed by suctionboxes 10 and the web is smoothed by a roll 32. The web is then passed around a drying cylinder 11 against which it is held by a felt or wire 33. The drying cylinder is heated to a temperature between 220‹ and 280‹ F. at which temperature the resin is cured to the " B " stage of condensation. The resulting dry resin-impregnated paper has a maximum ohmic resistance of 0.067 ohms per square inch, per thousandth of 46 an inch of thickness and contains between 20 and 65% of resin based on the total weight of resin and fibres. In making battery separators from the paper, it is cut into pieces which are compressed at their edges and then heated to a temperature of about 300 ‹ F. to cure the resin to the " C " stage of condensation.
GB617756A 1956-02-28 1956-02-28 Improvements in and connected with impregnated paper Expired GB832621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB617756A GB832621A (en) 1956-02-28 1956-02-28 Improvements in and connected with impregnated paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB617756A GB832621A (en) 1956-02-28 1956-02-28 Improvements in and connected with impregnated paper

Publications (1)

Publication Number Publication Date
GB832621A true GB832621A (en) 1960-04-13

Family

ID=9809814

Family Applications (1)

Application Number Title Priority Date Filing Date
GB617756A Expired GB832621A (en) 1956-02-28 1956-02-28 Improvements in and connected with impregnated paper

Country Status (1)

Country Link
GB (1) GB832621A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2331642A1 (en) * 1975-11-13 1977-06-10 Roehm Gmbh METHOD AND DEVICE FOR IMPREGNATION OF RAW PAPER-BUVARDS
FR2341697A1 (en) * 1976-02-20 1977-09-16 Cyrenne Roland STRETCH ROLLER IMPROVEMENTS FOR PAPER MACHINES
EP2644762A1 (en) * 2012-03-31 2013-10-02 Johns Manville Europe GmbH Method for producing wet-laid non-woven fabrics, in particular non-woven glass fiber fabrics

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2331642A1 (en) * 1975-11-13 1977-06-10 Roehm Gmbh METHOD AND DEVICE FOR IMPREGNATION OF RAW PAPER-BUVARDS
FR2341697A1 (en) * 1976-02-20 1977-09-16 Cyrenne Roland STRETCH ROLLER IMPROVEMENTS FOR PAPER MACHINES
EP2644762A1 (en) * 2012-03-31 2013-10-02 Johns Manville Europe GmbH Method for producing wet-laid non-woven fabrics, in particular non-woven glass fiber fabrics

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