US3861996A - Paper web transfer system carrying the web from forming wire to press section - Google Patents

Paper web transfer system carrying the web from forming wire to press section Download PDF

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Publication number
US3861996A
US3861996A US124766A US12476671A US3861996A US 3861996 A US3861996 A US 3861996A US 124766 A US124766 A US 124766A US 12476671 A US12476671 A US 12476671A US 3861996 A US3861996 A US 3861996A
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US
United States
Prior art keywords
felt
roll
web
press
pick
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
US124766A
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English (en)
Inventor
Gerhard Walter Dorfel
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.)
Ahlstrom Corp
Original Assignee
Ahlstrom Corp
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Filing date
Publication date
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Application granted granted Critical
Publication of US3861996A publication Critical patent/US3861996A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/36—Guiding mechanisms

Definitions

  • 162/274 162/306 162/358 suction pick-up roll located adjacaent the forward run 162/366 of the forming wire is wrapped in part by a first end- Inti. less pick-Up felt picks the Wb up from the [58] Field of 'i; 16 210 360 forming wire and carries it through the first press nip "fag of the press section. Prior to contacting the paper web the first felt passes through a press nip (for liquid re- [56] References Cited moval) formed between the suction pickup roll and a press roll.
  • a press nip for liquid re- [56] References Cited moval
  • a second felt i.e., lower support felt
  • PATENTS contacts the web carried by the first pick-up felt belii ii a1 162/113 x en the forming wire and press section.
  • PATENTEDJANZHQYB 3.86139 SHEETIUF 2 Fig. 3
  • the invention relates to the field of pressing a fiber web in a press section.
  • the pick-up felt is pressed against the pick-up roll by means of a press roll to eliminate slipping of the felt and stretching of the web.
  • the paper produced in accordance with the invention has better elasticity than paper manufactured by prior known methods.
  • FIG. 1 illustrates schematically a press section of a paper machine for carrying out the method according to the invention
  • FIGS. 2-6 illustrate schematically alternative embodiments of the press section.
  • FIG. 1 is the wire of the web-forming part, from where the suction roll 2 working as a pick-up roll moves the paper web 12 with the suction effect of the roll to the endless felt 8.
  • the suction roll, together with roll 1, forms a press nip through which the felt 8 runs.
  • the felt and the paper web run to roll 3 at a distance from roll 2; roll 3 and roll 4 together form another press nip, where liquid is pressed out of the paper web 12.
  • roll 4 together with roll 5.
  • a suitable roll combination is a suction roll 3, a stone roll 4, and a grooved roll 5. The direction of the movement of the paper web is illustrated by arrows.
  • FIG. 1 also illustrates the drying and cleaning devices of the endless felt 8 and the respective devices 16 of the pressing felt l4.
  • FIG. 5 illustrates a corresponding arrangement in a case in which the rolls 6 and 7 of the supporting wire 9 participate in forming the pressing points.
  • the felt and the web can be supported in other ways as well.
  • a suction box 10 has been fitted above the felt to keep the felt part horizontal.
  • a blowing device 11 has been respectively fitted below the felt; this device creates a cushion of air to support the felt part.
  • the pair of rolls 1 and 2 forms the so-called washing press of the felt and removes from the felt liquid that has been absorbed by it. Because the paper web is supported between rolls 2 and 3, the felt can be relatively dry there, in which case the proportionate dryness of the paper web, also, will be high after the first pressing point.
  • the paper web travels from the upper pick-up felt 8 running around the pick-up roll 2, to the lower support felt 9 at the pressing point formed by pressing roll 6, which is inside the lower felt, together with the pick-up felt.
  • the paper track, supported by the lower felt runs to the next pressing point formed by pressing roll 7, which is inside the lower-felt loop, together with pressing roll 3, onto which the paper web moves following the pressing point.
  • FIGS. 5 and 6 have in common the passage of the upper pick-up felt alone through a press nip, a second press nip through which the web is passed between two felts, and a third nip through which the paper web passes along with the support felt. In both of these cases the web is separated from the felt by appropriate guide means as shown by the arrows and the small rolls for the departing felts 8 and 9 in the two embodiments.
  • the pick-up roll is a positive one and the pressing roll in contact with it may also be positive. Both or one of the rolls of the pressing point after the straight felt part may be positive.
  • the numbers of revolutions of the first and the second pressing points can be changed without gradation so that the speed of the felt at these points may be the same or greater at the first pressing point than at the second.
  • Suction rolls rolls with different coatings, smooth rolls, or grooved rolls, in suitable combinations, can be used as pressing rolls, as in paper machines in general.
  • An improved press section in a web forming machine of the type having at least two traveling endless felts for contacting and carrying the web which includes a pick-up roll urging a pick-up felt against the web for transferring the web to the felt, said pick-up felt passing around said pick-up roll and through a press nip for the pick-up felt defined between a press roll and said pick-up roll, a second press roll opposedly positioned to said pick-up roll and defining a second press nip between said pick-up roll and said second press roll through which the web, said pick-up felt and a support felt pass, the web being carried through said ing the web between said second and third press nips; one roll of each of said second and third press nips constituting a guiding roll for said support felt, and roll means for separating the web from the felt after said third press nip.

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  • Paper (AREA)
US124766A 1970-03-17 1971-03-16 Paper web transfer system carrying the web from forming wire to press section Expired - Lifetime US3861996A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI71470 1970-03-17

Publications (1)

Publication Number Publication Date
US3861996A true US3861996A (en) 1975-01-21

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ID=8504530

Family Applications (1)

Application Number Title Priority Date Filing Date
US124766A Expired - Lifetime US3861996A (en) 1970-03-17 1971-03-16 Paper web transfer system carrying the web from forming wire to press section

Country Status (3)

Country Link
US (1) US3861996A (sk)
DE (1) DE2112395A1 (sk)
SE (1) SE374150B (sk)

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016032A (en) * 1972-11-30 1977-04-05 Valmet Oy Suction roll for transferring a web away from a press section
US4056433A (en) * 1975-09-16 1977-11-01 Valmet Oy Ascending twin-wire paper machine without web pick-up
US4059482A (en) * 1974-09-27 1977-11-22 Valmet Oy Paper machine pickup and crepe-setting press section
US4075056A (en) * 1974-08-15 1978-02-21 Beloit Corporation Press section structure
US4086131A (en) * 1975-05-06 1978-04-25 Beloit Corporation Method for pressing bagasse webs
US4110156A (en) * 1976-06-14 1978-08-29 Escher Wyss Limited Compact press at the web transfer position of a paper making machine
US4113557A (en) * 1976-04-14 1978-09-12 Valmet Oy Paper manufacturing structure particularly for detaching a web from a wire
US4163688A (en) * 1972-11-30 1979-08-07 Valmet Oy Apparatus for dewatering in a paper machine
US4172759A (en) * 1976-09-13 1979-10-30 Valmet Oy Paper-machine structure and method for subjecting a web to suction
US4188262A (en) * 1972-11-30 1980-02-12 Valmet Method for dewatering paper in a paper machine press section
US4197158A (en) * 1978-03-16 1980-04-08 Beloit Corporation Paper making machine press section
US4209361A (en) * 1972-11-30 1980-06-24 Valmet Oy Method of multi-nip pressing in a paper machine
US4257844A (en) * 1977-04-15 1981-03-24 Beloit Corporation Press section arrangement
US4285766A (en) * 1977-04-25 1981-08-25 Valmet Oy Press method in a paper machine
US4551203A (en) * 1984-04-02 1985-11-05 Valmet Oy Method and arrangement for guiding a paper web from the press section to the drying section
US4792381A (en) * 1986-09-12 1988-12-20 Valmet Oy Closed and compact press section of a paper machine with double S shaped path or mirror image thereof
US4909905A (en) * 1986-06-03 1990-03-20 Valmet Paper Machinery Inc. Closed press section of a paper machine and a frame construction for same
US4919762A (en) * 1987-06-17 1990-04-24 Valmet Paper Machinery Inc. Press section and press section/frame construction combination in a paper machine
DE3942396A1 (de) * 1988-12-23 1990-06-28 Tampella Oy Ab Verfahren und anordnung zum leiten einer faserbahn von einem sieb durch eine pressenpartie
US5308450A (en) * 1991-04-16 1994-05-03 Sulzer Escher Wyss Gmbh Press section of a papermaking machine
US5501775A (en) * 1993-01-23 1996-03-26 J. M. Voith Gmbh Wet press for a paper making machine
US5520782A (en) * 1993-01-23 1996-05-28 J. M. Voith Gmbh Method and apparatus for removing water from a web by means of presses
US5639351A (en) * 1991-12-23 1997-06-17 Valmet Corporation Press section of a paper machine, in particular for printing paper qualities
US5670023A (en) * 1993-05-29 1997-09-23 Voith Sulzer Papiermaschinen Gmbh Press of a paper machine for thin papers
US5792318A (en) * 1996-11-18 1998-08-11 Mancini; Ralph Method to stabilize sheet between press section and dryer section of a paper-making machine
US5820731A (en) * 1993-06-11 1998-10-13 Valmet Corporation Method and apparatus in a paper or board machine for dewatering the web
US5830321A (en) * 1997-01-29 1998-11-03 Kimberly-Clark Worldwide, Inc. Method for improved rush transfer to produce high bulk without macrofolds
US5865954A (en) * 1993-12-08 1999-02-02 Valmet Corporation Method for dewatering a web in a paper making machine employing an extended nip press
US5888354A (en) * 1996-04-04 1999-03-30 Valmet Corporation Transfer of a web in a paper machine from a two-felt press nip to a dryer section
US5891308A (en) * 1996-02-02 1999-04-06 Beloit Technologies, Inc. Method of pressing a paper web of tropical hardwood fibers
US6030499A (en) * 1993-06-11 2000-02-29 Valmet Corporation Method and apparatus in a paper or board machine for dewatering the web
US6090244A (en) * 1997-01-28 2000-07-18 Voith Sulzer Papiermaschinen Gmbh Press section
US6228216B1 (en) * 1998-07-10 2001-05-08 Kimberly-Clark Worldwide, Inc. Transfer of a cellulosic web between spaced apart transport means using a moving air as a support
US6260287B1 (en) 1997-08-08 2001-07-17 Peter Walker Wet web stability method and apparatus
US6368466B1 (en) * 1993-12-08 2002-04-09 Valmet Corporation Press section of a paper making machine employing an extended nip press

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10149563A1 (de) * 2001-10-08 2003-04-10 Voith Paper Patent Gmbh Bahnführung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2043351A (en) * 1935-06-01 1936-06-09 Int Cellucotton Products Method of making a tissue paper product
US2204426A (en) * 1935-06-21 1940-06-11 Sandusky Foundry And Machine C Papermaking machine
US2694346A (en) * 1950-03-25 1954-11-16 Beloit Iron Works Web transfer assembly
US2709398A (en) * 1950-06-02 1955-05-31 Beloit Iron Works Suction transfer assembly with deckle edge control
US3207657A (en) * 1963-01-22 1965-09-21 Huyck Corp Method and apparatus for making paper by contracting the forming carrier to compact the web
US3526574A (en) * 1967-03-27 1970-09-01 Beloit Corp Vacuum transfer device in papermaking machine
US3629056A (en) * 1969-04-03 1971-12-21 Beloit Corp Apparatus for forming high bulk tissue having a pattern imprinted thereon

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2043351A (en) * 1935-06-01 1936-06-09 Int Cellucotton Products Method of making a tissue paper product
US2204426A (en) * 1935-06-21 1940-06-11 Sandusky Foundry And Machine C Papermaking machine
US2694346A (en) * 1950-03-25 1954-11-16 Beloit Iron Works Web transfer assembly
US2709398A (en) * 1950-06-02 1955-05-31 Beloit Iron Works Suction transfer assembly with deckle edge control
US3207657A (en) * 1963-01-22 1965-09-21 Huyck Corp Method and apparatus for making paper by contracting the forming carrier to compact the web
US3526574A (en) * 1967-03-27 1970-09-01 Beloit Corp Vacuum transfer device in papermaking machine
US3629056A (en) * 1969-04-03 1971-12-21 Beloit Corp Apparatus for forming high bulk tissue having a pattern imprinted thereon

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4209361A (en) * 1972-11-30 1980-06-24 Valmet Oy Method of multi-nip pressing in a paper machine
US4163688A (en) * 1972-11-30 1979-08-07 Valmet Oy Apparatus for dewatering in a paper machine
US4016032A (en) * 1972-11-30 1977-04-05 Valmet Oy Suction roll for transferring a web away from a press section
US4188262A (en) * 1972-11-30 1980-02-12 Valmet Method for dewatering paper in a paper machine press section
US4075056A (en) * 1974-08-15 1978-02-21 Beloit Corporation Press section structure
US4059482A (en) * 1974-09-27 1977-11-22 Valmet Oy Paper machine pickup and crepe-setting press section
US4086131A (en) * 1975-05-06 1978-04-25 Beloit Corporation Method for pressing bagasse webs
US4056433A (en) * 1975-09-16 1977-11-01 Valmet Oy Ascending twin-wire paper machine without web pick-up
US4113557A (en) * 1976-04-14 1978-09-12 Valmet Oy Paper manufacturing structure particularly for detaching a web from a wire
US4110156A (en) * 1976-06-14 1978-08-29 Escher Wyss Limited Compact press at the web transfer position of a paper making machine
US4172759A (en) * 1976-09-13 1979-10-30 Valmet Oy Paper-machine structure and method for subjecting a web to suction
US4257844A (en) * 1977-04-15 1981-03-24 Beloit Corporation Press section arrangement
US4285766A (en) * 1977-04-25 1981-08-25 Valmet Oy Press method in a paper machine
US4197158A (en) * 1978-03-16 1980-04-08 Beloit Corporation Paper making machine press section
US4551203A (en) * 1984-04-02 1985-11-05 Valmet Oy Method and arrangement for guiding a paper web from the press section to the drying section
US4909905A (en) * 1986-06-03 1990-03-20 Valmet Paper Machinery Inc. Closed press section of a paper machine and a frame construction for same
US4792381A (en) * 1986-09-12 1988-12-20 Valmet Oy Closed and compact press section of a paper machine with double S shaped path or mirror image thereof
US4919762A (en) * 1987-06-17 1990-04-24 Valmet Paper Machinery Inc. Press section and press section/frame construction combination in a paper machine
DE3942396A1 (de) * 1988-12-23 1990-06-28 Tampella Oy Ab Verfahren und anordnung zum leiten einer faserbahn von einem sieb durch eine pressenpartie
US5308450A (en) * 1991-04-16 1994-05-03 Sulzer Escher Wyss Gmbh Press section of a papermaking machine
US5431787A (en) * 1991-04-16 1995-07-11 Sulzer-Escher Wyss Gmbh Press section of a papermaking machine
US5639351A (en) * 1991-12-23 1997-06-17 Valmet Corporation Press section of a paper machine, in particular for printing paper qualities
US5501775A (en) * 1993-01-23 1996-03-26 J. M. Voith Gmbh Wet press for a paper making machine
US5520782A (en) * 1993-01-23 1996-05-28 J. M. Voith Gmbh Method and apparatus for removing water from a web by means of presses
US5705034A (en) * 1993-01-23 1998-01-06 Voith Sulzer Papiermaschinen Gmbh Method and apparatus for removing water from a web by means of presses
US5670023A (en) * 1993-05-29 1997-09-23 Voith Sulzer Papiermaschinen Gmbh Press of a paper machine for thin papers
US5820731A (en) * 1993-06-11 1998-10-13 Valmet Corporation Method and apparatus in a paper or board machine for dewatering the web
US6030499A (en) * 1993-06-11 2000-02-29 Valmet Corporation Method and apparatus in a paper or board machine for dewatering the web
US5865954A (en) * 1993-12-08 1999-02-02 Valmet Corporation Method for dewatering a web in a paper making machine employing an extended nip press
US6368466B1 (en) * 1993-12-08 2002-04-09 Valmet Corporation Press section of a paper making machine employing an extended nip press
US5891308A (en) * 1996-02-02 1999-04-06 Beloit Technologies, Inc. Method of pressing a paper web of tropical hardwood fibers
US5888354A (en) * 1996-04-04 1999-03-30 Valmet Corporation Transfer of a web in a paper machine from a two-felt press nip to a dryer section
US5951821A (en) * 1996-04-04 1999-09-14 Valmet Corporation Arrangement and method for transferring a web in a paper machine from a two-felt press nip to a dryer section
US5792318A (en) * 1996-11-18 1998-08-11 Mancini; Ralph Method to stabilize sheet between press section and dryer section of a paper-making machine
US6090244A (en) * 1997-01-28 2000-07-18 Voith Sulzer Papiermaschinen Gmbh Press section
US5830321A (en) * 1997-01-29 1998-11-03 Kimberly-Clark Worldwide, Inc. Method for improved rush transfer to produce high bulk without macrofolds
US6260287B1 (en) 1997-08-08 2001-07-17 Peter Walker Wet web stability method and apparatus
US6228216B1 (en) * 1998-07-10 2001-05-08 Kimberly-Clark Worldwide, Inc. Transfer of a cellulosic web between spaced apart transport means using a moving air as a support

Also Published As

Publication number Publication date
DE2112395A1 (de) 1971-10-07
SE374150B (sk) 1975-02-24

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