SE302719B - - Google Patents

Info

Publication number
SE302719B
SE302719B SE8563/63A SE856363A SE302719B SE 302719 B SE302719 B SE 302719B SE 8563/63 A SE8563/63 A SE 8563/63A SE 856363 A SE856363 A SE 856363A SE 302719 B SE302719 B SE 302719B
Authority
SE
Sweden
Prior art keywords
web
roller
rollers
atmospheric pressure
fluidized bed
Prior art date
Application number
SE8563/63A
Inventor
B Burgess
Original Assignee
Pulp And Paper Research Ins Of
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 Pulp And Paper Research Ins Of filed Critical Pulp And Paper Research Ins Of
Publication of SE302719B publication Critical patent/SE302719B/xx

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/004—Drying webs by contact with heated surfaces or materials
    • D21F5/005—Drying webs by contact with heated surfaces or materials in a fluid bed
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/51—Use of fluidized bed in molding

Abstract

994,951. Drying webs; heating web material. PULP AND PAPER RESEARCH INSTITUTE OF CANADA. July 15, 1963 [Aug. 3, 1962], No. 27901/63. Headings F4G and F4U. In a continuous process for drying web material, e.g. paper, the web is submerged in and supported for passage through a fluidized bed and simultaneously has one side subjected to sub-atmospheric pressure. A web 46, Fig. 1, is dried in a fluidized bed in a chamber 12 by passage about a primary guide roller 35 and then a rotary foraminous roll 28 connected to a vacuum source through a shaft 30 for the removal of vapour from the web, which finally passes around a secondary guide roller 37, a third guide roller 39 mounted between the rollers 35, 37 to provide a nip. The particles of the fluidized bed are heated by heat exchanger tubes 16, 17 and fluidized by gas from a lower plenum chamber 13 which is recirculated through lines 19 having heat exchangers 20. A segment 32 of the interior of the roller 28 is maintained at atmospheric pressure by separation from the remainder of the interior by a fork 33 and seals 34a, 34b. A doctor blade 43 is mounted on roller 39, and combined sealing strips and doctor blades 41, 42 are associated with rollers 35, 28 respectively. In a modification, the fluidized particles are magnetic and a magnetic roller is mounted adjacent a non-magnetic doctor and the roller 28 to remove particles adhering to the web. In another embodiment the roller 28 is replaced by upper and lower solid rollers 50, 51, Fig. 3, and a box 52 therebetween which is divided into two vertical boxes 52a, 52b having perforations 56 which are connectible to the same or dissimilar vacuum sources. A perforated belt 61 passes about the rollers 50, 51 to convey the web through the fluidized bed. In a further embodiment, Figs. 4 to 6 (not shown), a perforated belt is interposed between a portion of a stationary source of sub-atmospheric pressure and the web, which source comprises a box housing belt-supporting rollers. In a final embodiment, Fig. 7 (not shown), the stationary source of sub-atmospheric pressure comprises a chamber having perforated semi-cylindrical base about which the web passes in sliding and supported contact.
SE8563/63A 1962-08-03 1963-08-02 SE302719B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US214757A US3248798A (en) 1962-08-03 1962-08-03 Process and apparatus for continuous drying of continuous web materials

Publications (1)

Publication Number Publication Date
SE302719B true SE302719B (en) 1968-07-29

Family

ID=22800316

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8563/63A SE302719B (en) 1962-08-03 1963-08-02

Country Status (3)

Country Link
US (1) US3248798A (en)
GB (1) GB994951A (en)
SE (1) SE302719B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3402236A (en) * 1964-01-29 1968-09-17 Chemstrand Ltd Manufacture and treatment of synthetic fibres and fabrics containing the same
GB1238723A (en) * 1967-08-23 1971-07-07
US4035521A (en) * 1975-02-26 1977-07-12 Westinghouse Electric Corporation Build control for fluidized bed wire coating

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB817992A (en) * 1955-05-10 1959-08-12 British Rayon Res Ass Improvements in or relating to the drying of filaments, fibres, threads or the like
GB338547A (en) * 1929-07-18 1930-11-18 Einar Fritiof Sundstroem Improvements in or relating to pulp drying
US2785478A (en) * 1954-05-28 1957-03-19 British Rayon Res Ass Treatment of elongated flexible materials such as fabrics
US2879607A (en) * 1954-09-10 1959-03-31 Fleissner & Sohn Maschf Drier of the sieve-drum type
US2938276A (en) * 1957-03-07 1960-05-31 British Rayon Res Ass Seal for fluidized bed
US2896336A (en) * 1957-04-11 1959-07-28 West Virginia Pulp & Paper Co Apparatus for drying web material
US2981631A (en) * 1957-11-13 1961-04-25 Polymer Corp Fluidized bed coating method for forming a foam
GB885226A (en) * 1958-03-07 1961-12-20 Mather & Platt Ltd Improvements relating to machines for the heat treatment of textile materials

Also Published As

Publication number Publication date
US3248798A (en) 1966-05-03
GB994951A (en) 1965-06-10

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