US2224803A - Apparatus for drying paper - Google Patents

Apparatus for drying paper Download PDF

Info

Publication number
US2224803A
US2224803A US166656A US16665637A US2224803A US 2224803 A US2224803 A US 2224803A US 166656 A US166656 A US 166656A US 16665637 A US16665637 A US 16665637A US 2224803 A US2224803 A US 2224803A
Authority
US
United States
Prior art keywords
suction
paper
web
drying
sheet
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 - Lifetime
Application number
US166656A
Inventor
Albert H Standley
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.)
DOWNINGTOWN Manufacturing CO
Original Assignee
DOWNINGTOWN Manufacturing 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
Application filed by DOWNINGTOWN Manufacturing CO filed Critical DOWNINGTOWN Manufacturing CO
Priority to US166656A priority Critical patent/US2224803A/en
Application granted granted Critical
Publication of US2224803A publication Critical patent/US2224803A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00Dryer section of machines for making continuous webs of paper
    • D21F5/02Drying on cylinders

Definitions

  • This invention relates to apparatus for controlling the moisture content of paper webs.
  • An important object of the invention is to provide means for more rapidly drying paper than that in present use.
  • the usual method of drying paper is to pass the same, with or without the'accompaniment of a supporting endless carrier or carriers, over a series of drying drums, the drums being so arranged that the faces of the paper are alternately presented to the drums.
  • the heating of the web vaporizes the water content of the sheet which is finally driven off to an extent such that final drying action and calendering can be resorted to.
  • the vapor formed is withdrawn from the sheet by means of suction applied through suitable suction boxes or rolls, the paper being first heated, then subjected to the action of suction, reheated and again subjected to the action of suction and finallydried.
  • the suction action is preferably supplemented by the use of a dry heated gas applied at the opposite face of the sheet from that at which suction is applied so that it is drawn into the pores of the sheet to replace the withdrawn vapor. This action may be repeated as often as desired and will result in a much more rapid removal of liquid from the web than is possible by the ordinary means, which merely depends upon the dispersal of the vapor to the atmosphere.
  • Fig. 1 is .a diagrammatic view illustrating my invention as applied to a drier wherein the paper web passes through the drying section without accompaniment by an endless carrier;
  • Fig, 2 is a similar view showing the application of my invention to a drier section wherein endless carriers are employed;
  • Fig. 3 is a longitudinal sectional view through a suction drier constructed in accordance with my invention.
  • Fig. 4 is a transverse sectional view therethrough on line 4-4 of Fig. 3;
  • Fig. 5 is a diagrammatic view illustrating treatment of paper to increase the moisture content thereof.
  • the numeral I0 indicates heated drying drums of any usual or ordinary construction, these drums. being arranged in series about which a paper web I l is passed so that opposite faces of the, paper alternately engage adjacent drums, and I2, suction drier rolls about which the paper is likewise trained, such drier rolls being arranged in the series and in spaced-apart relation in the series; that is to say, having arranged between them two or more of the heated drier. drums Ill.
  • the spacing is such that the suction rolls engage opposite faces of the web, since in many cases, particularly in board machines, the thickness of the web II is such that it is difficult to draw air through the web with any rapidity.
  • Adjacent each suction roll is an air hood I3, this hood being of arcuate form and extending over that portion of the roll including the suction area generally designated at H.
  • Means are provided, as conduit l5, for delivering heated air to this hood which, in turn, directs the air against the opposite face of the paper web to which the suction is applied so that the pores of the web from which vapor has been withdrawn may be filled with dry hot air expediting the drying operation.
  • the suction roll employed corresponds in its geneneral construction tothe ordinary suction roll employed in the wet end and press sections of the machine, comprising a rotating foraminous shell l9 supported on suitable trunnions 20 through one of which suction is applied to the usual suction box 2
  • the suction box is provided with the usual packings 22 and deckle 23. Due to the fact, however, that the roll itself does not have to withstand any great pressure it can be made comparatively light and, accordingly, may be driven or not, depending upon the kind and the condition of the paper or board web.
  • the surface of the roll is preferably covered with screen cloth, as indicated at 24.
  • Fig. 5 I have illustrated a conditioning apparatus for use in increasing the moisture content of the web.
  • the paper is passed over a cooled drum 25, following which it is subjected to the action of humid air or steam simultaneously with the action of a suction roll 26, the steam or air being introduced through a hood 21 arranged at the opposite face of the paper from that at which suction is applied.
  • suction may be applied from both surfaces of the sheet, this merely involving a duplication of the suction roll 26 and hood 21.
  • the paper is then led over a cooled drum, 7
  • Apparatus for controlling the moisture content of paper sheets comprising a' series of rolls about which the paper web is trained; said rolls including cooled rolls and an intermediate suction roll, and means to deliver a gas having a predetermined moisture content to the opposite face of the paper during its passage over the suction roll;

Description

Dec. 10, 1940. A. H. STANDLEY APPARATUS FOR DRYING PAPER Filed Sept. 30, 1957 2 Sheets-Sheet l w m mm Dec. 10, 1940. H. STANDLEY APPARATUS FOR DRYING PAPER Filed Sept. 30, 1957 2 Sheets-Sheet 2 Patented Dec. 10, 1940- UNITED STATES APPARATUS FOR- DRYING PAPER Albert H. Standley, Downingtown, Pa., assignor to Downingtown Manufacturing Company, Downingtown, Pa., a corporation of Pennsylvania 7 Application September 30, 1937, Serial No. 166,656
1 Claim.
This invention relates to apparatus for controlling the moisture content of paper webs.
An important object of the invention is to provide means for more rapidly drying paper than that in present use.
The usual method of drying paper is to pass the same, with or without the'accompaniment of a supporting endless carrier or carriers, over a series of drying drums, the drums being so arranged that the faces of the paper are alternately presented to the drums. The heating of the web vaporizes the water content of the sheet which is finally driven off to an extent such that final drying action and calendering can be resorted to.
In accordance with my method, the vapor formed is withdrawn from the sheet by means of suction applied through suitable suction boxes or rolls, the paper being first heated, then subjected to the action of suction, reheated and again subjected to the action of suction and finallydried. The suction action is preferably supplemented by the use of a dry heated gas applied at the opposite face of the sheet from that at which suction is applied so that it is drawn into the pores of the sheet to replace the withdrawn vapor. This action may be repeated as often as desired and will result in a much more rapid removal of liquid from the web than is possible by the ordinary means, which merely depends upon the dispersal of the vapor to the atmosphere.
Where the paper web in its travel over the drying drums is accompanied by an endless carrier,
' or carriers, these are separated from the web during the application of suction, the suction being applieddirectly to the sheet. In order that the contained vapors of the carrier may not be transferred to the sheet when the sheet and carrier, or
carriers, are rejoined, the carriers themselves are alignment in operation and, in accordance with my invention, under such circumstances-moisture is added to the sheet in governable quantities.
These and other objects I attain by the apparatus shown in the accompanying drawings wherein I have illustrated embodiments of my invention and wherein:
Fig. 1 is .a diagrammatic view illustrating my invention as applied to a drier wherein the paper web passes through the drying section without accompaniment by an endless carrier;
Fig, 2 .is a similar view showing the application of my invention to a drier section wherein endless carriers are employed;
Fig. 3 is a longitudinal sectional view through a suction drier constructed in accordance with my invention;
Fig. 4 is a transverse sectional view therethrough on line 4-4 of Fig. 3; and
Fig. 5 is a diagrammatic view illustrating treatment of paper to increase the moisture content thereof.
Referring now more particularly to the drawings, the numeral I0 indicates heated drying drums of any usual or ordinary construction, these drums. being arranged in series about which a paper web I l is passed so that opposite faces of the, paper alternately engage adjacent drums, and I2, suction drier rolls about which the paper is likewise trained, such drier rolls being arranged in the series and in spaced-apart relation in the series; that is to say, having arranged between them two or more of the heated drier. drums Ill. The spacing is such that the suction rolls engage opposite faces of the web, since in many cases, particularly in board machines, the thickness of the web II is such that it is difficult to draw air through the web with any rapidity. Adjacent each suction roll is an air hood I3, this hood being of arcuate form and extending over that portion of the roll including the suction area generally designated at H. Means are provided, as conduit l5, for delivering heated air to this hood which, in turn, directs the air against the opposite face of the paper web to which the suction is applied so that the pores of the web from which vapor has been withdrawn may be filled with dry hot air expediting the drying operation. f
In Fig. 2 of the drawings, wherein the web I I is accompanied during its passage through the drier by upper and lower felts I6 and I1, means are tion is withdrawn. While I have in the present instance shown each idler as comprising a suction roll, obviously the number of rolls so employed may be reduced as desired and in many instances they may be completely substituted for by the ordinary idler roll.
While in each form of the invention illustrated it has been shown as applied to a two-deck drier, it may, obviously, be included in any drier arrangement with but slight modification thereof. The suction roll employed corresponds in its geneneral construction tothe ordinary suction roll employed in the wet end and press sections of the machine, comprising a rotating foraminous shell l9 supported on suitable trunnions 20 through one of which suction is applied to the usual suction box 2|. The suction box is provided with the usual packings 22 and deckle 23. Due to the fact, however, that the roll itself does not have to withstand any great pressure it can be made comparatively light and, accordingly, may be driven or not, depending upon the kind and the condition of the paper or board web. The surface of the roll is preferably covered with screen cloth, as indicated at 24.
In Fig. 5, I have illustrated a conditioning apparatus for use in increasing the moisture content of the web. In this figure the paper is passed over a cooled drum 25, following which it is subjected to the action of humid air or steam simultaneously with the action of a suction roll 26, the steam or air being introduced through a hood 21 arranged at the opposite face of the paper from that at which suction is applied. If desired, suction may be applied from both surfaces of the sheet, this merely involving a duplication of the suction roll 26 and hood 21. Following its treatment, the paper is then led over a cooled drum, 7
Apparatus for controlling the moisture content of paper sheets comprising a' series of rolls about which the paper web is trained; said rolls including cooled rolls and an intermediate suction roll, and means to deliver a gas having a predetermined moisture content to the opposite face of the paper during its passage over the suction roll;
ALBERT H. STANDLEY.
US166656A 1937-09-30 1937-09-30 Apparatus for drying paper Expired - Lifetime US2224803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US166656A US2224803A (en) 1937-09-30 1937-09-30 Apparatus for drying paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US166656A US2224803A (en) 1937-09-30 1937-09-30 Apparatus for drying paper

Publications (1)

Publication Number Publication Date
US2224803A true US2224803A (en) 1940-12-10

Family

ID=22604186

Family Applications (1)

Application Number Title Priority Date Filing Date
US166656A Expired - Lifetime US2224803A (en) 1937-09-30 1937-09-30 Apparatus for drying paper

Country Status (1)

Country Link
US (1) US2224803A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427943A (en) * 1939-05-18 1947-09-23 Samcoe Holding Corp Apparatus for feeding and drying fabrics
US2461109A (en) * 1944-09-30 1949-02-08 Crabtree Kay Manufacture of paper
US2532910A (en) * 1947-09-02 1950-12-05 Kalamazoo Vegets Le Parchment Apparatus for drying paper, paperboard, pulp, and the like
US2622340A (en) * 1949-05-10 1952-12-23 Cellophane Sa Method for drying films
US2896336A (en) * 1957-04-11 1959-07-28 West Virginia Pulp & Paper Co Apparatus for drying web material
US3011266A (en) * 1958-03-21 1961-12-05 Fleissner & Co G M B H Method of steaming fibrous strip materials
US3123700A (en) * 1964-03-03 Radiation exposure unit
US4202113A (en) * 1977-04-04 1980-05-13 Valmet Oy Paper machine drying section and method for operating same
US4510864A (en) * 1981-02-02 1985-04-16 Gerhard Klemm Screen printing machine
WO1990002225A1 (en) * 1988-08-23 1990-03-08 Beloit Corporation A tail cutter apparatus and method
US5291666A (en) * 1993-04-23 1994-03-08 International Paper Company Apparatus for drying roll material
US5507104A (en) * 1987-02-13 1996-04-16 Beloit Technologies, Inc. Web drying apparatus
US5832625A (en) * 1987-02-13 1998-11-10 Beloit Technologies, Inc. Apparatus for drying a web
US6049999A (en) * 1987-02-13 2000-04-18 Beloit Technologies, Inc. Machine and process for the restrained drying of a paper web

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123700A (en) * 1964-03-03 Radiation exposure unit
US2427943A (en) * 1939-05-18 1947-09-23 Samcoe Holding Corp Apparatus for feeding and drying fabrics
US2461109A (en) * 1944-09-30 1949-02-08 Crabtree Kay Manufacture of paper
US2532910A (en) * 1947-09-02 1950-12-05 Kalamazoo Vegets Le Parchment Apparatus for drying paper, paperboard, pulp, and the like
US2622340A (en) * 1949-05-10 1952-12-23 Cellophane Sa Method for drying films
US2896336A (en) * 1957-04-11 1959-07-28 West Virginia Pulp & Paper Co Apparatus for drying web material
US3011266A (en) * 1958-03-21 1961-12-05 Fleissner & Co G M B H Method of steaming fibrous strip materials
US4202113A (en) * 1977-04-04 1980-05-13 Valmet Oy Paper machine drying section and method for operating same
US4510864A (en) * 1981-02-02 1985-04-16 Gerhard Klemm Screen printing machine
US5507104A (en) * 1987-02-13 1996-04-16 Beloit Technologies, Inc. Web drying apparatus
US5636448A (en) * 1987-02-13 1997-06-10 Beloit Technologies, Inc. Web drying apparatus
US5832625A (en) * 1987-02-13 1998-11-10 Beloit Technologies, Inc. Apparatus for drying a web
US6049999A (en) * 1987-02-13 2000-04-18 Beloit Technologies, Inc. Machine and process for the restrained drying of a paper web
WO1990002225A1 (en) * 1988-08-23 1990-03-08 Beloit Corporation A tail cutter apparatus and method
US5291666A (en) * 1993-04-23 1994-03-08 International Paper Company Apparatus for drying roll material

Similar Documents

Publication Publication Date Title
US1595478A (en) Method of stripping and feeding paper and apparatus
US2224803A (en) Apparatus for drying paper
US3868780A (en) Group of drying cylinders in a multiple cylinder dryer for a material web, in particular for paper
USRE28459E (en) Transpiration drying and embossing of wet paper webs
US3354035A (en) Continuous process of drying uncoated fibrous webs
USRE25358E (en) Process of and apparatus for papermaking
GB2131934A (en) A paper or board dryer for the removal of liquid from a travelling web
US3531371A (en) Apparatus for making paper
NO152975B (en) GLYCEROLOXYDASE AND PROCEDURE FOR PREPARING THEREOF
US1470953A (en) Paper-making machine
US3751822A (en) Web dryer
US2386584A (en) Reverse press section for papermaking machines
US3639207A (en) Method for drying nonwoven fabric
US3576078A (en) Paper drying process and apparatus
US3367035A (en) Drying on air supported belt
US1595240A (en) Vacuum seal, method and apparatus
US2281496A (en) Air drier for paper
US2443352A (en) Suction press section for paper machines
US2661669A (en) Process and apparatus for avoiding curl in machine-made paper
JPH10502711A (en) Paper web drying equipment
US1438511A (en) Paper-making machine
US2061976A (en) Process and apparatus for the drying of travelling webs
US3555700A (en) Roll for papermaking machinery
US1163254A (en) Paper-making machine.
US3370359A (en) Web drying method and apparatus