EP1437443A1 - Machine pour la fabrication de papier - Google Patents

Machine pour la fabrication de papier Download PDF

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Publication number
EP1437443A1
EP1437443A1 EP03000060A EP03000060A EP1437443A1 EP 1437443 A1 EP1437443 A1 EP 1437443A1 EP 03000060 A EP03000060 A EP 03000060A EP 03000060 A EP03000060 A EP 03000060A EP 1437443 A1 EP1437443 A1 EP 1437443A1
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EP
European Patent Office
Prior art keywords
wire
roll
felt
paper
function
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.)
Withdrawn
Application number
EP03000060A
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German (de)
English (en)
Inventor
Jin-Hwa Jeon
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP03000060A priority Critical patent/EP1437443A1/fr
Publication of EP1437443A1 publication Critical patent/EP1437443A1/fr
Withdrawn legal-status Critical Current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
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/14—Making cellulose wadding, filter or blotting paper
    • 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
    • D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type

Definitions

  • Fig. 1 is a system for showing conventional paper-manufacturing processes.
  • the conventional paper-manufacturing system is composed of a head box (10), an out wire part (20), an inner wire part (30), press part (40) and a dryer part (50).
  • the head box (10) located at the lower part between the our wire part (20) and the inner wire part (30) is the part for distributing pulp fluid for manufacturing paper on mesh of the wire belt (25) and plays an important role for distributing the pulp fluid uniformly on the mesh of the wire belt (25) having broad width (the width 3 ⁇ 5m) and high speed (1500m/min equivalent to 90km/h).(The concentration of the average pulp fluid is about 15% of the pulp content).
  • the out wire part (20) is composed of the wire roll (21), the wire guide roll (22), the water tray (23), the forming roll (24) and the wire belt (25), and plays a role for enabling the wire rolls (about 5 ⁇ 6 rolls) (21) to rotate the wire belt (25) around the wire loop.
  • the diameters of the wire rolls are different in accordance with the speed and the width and are about 300 ⁇ 500mm.
  • the surface of the wire rolls is composed of elastomer such as rubber and other elastic materials.
  • the wire guide roll (22) plays a role of performing automatic return of the wire belt (25) for enabling the wire belt (25) to continuously run without escaping from the central orbit and is coated with an elastomer such as rubber like the wire roll.
  • the pulp fluid which is supplied on the mesh of wire belt (25) from the head box (10) is composed of about 99.8% or more of water and about 0.2% or below of pulp and a large amount of water is discharged outside the wire box.
  • the water tray (23) is a tub for taking in and moving water instantaneously discharged from wire box.
  • the forming roll (24) is a large-sized driving roll and rotates with making out wire part (20) and wire belt (25) contact concurrently. Dehydrating and sheet forming are accomplished on this forming roll (24).
  • the wire belt (25) is equipped with a net for discharging and filtering water after receiving dilute pulp fluid.
  • the inner wire part (30) is composed of the wire roll (31), the wire guide roll (34), the pick up roll (32) and the inner wire belt (33).
  • the inner wire belt (33) is linked and geared with the forming roll (24).
  • the wire roll (31) and the wire guide roll (31) play the same role as in the out wire part (20).
  • the inner wire part plays a role for transferring the formed wet paper to the felt of the press part.
  • the pick-up roll (32) transfers the wet paper transferred onto the inner wire part onto the felt and adsorbs the wet paper by producing vacuum and transfers the wet paper onto the felt.
  • the vacuum box which is not shown in the drawings, sucks the wet paper formed on the forming roll at the time of separating the out wire and the inner wire and transfers the wet paper onto the inner wire.
  • the inner wire belt (33) is a net like out wire loop but has a more dense structure in order for the wet paper to be transferred onto the inner wire.
  • the press part (40) is composed of the suction press roll (41), the second touch roll (42), the felt guide roll (43), the felt roll (44) and the felt (45).
  • the suction press roll (41) linked with the inner wire part (30) is a vacuum roll for pressing moisture of wet paper to the dryer surface with high pressure and absorbing the water.
  • the outer shell rotates. However as the outer shell is equipped with vacuum box inside discharges the dehydrated water to the outside.
  • the second touch roll (42) is a press roll for removing moisture of the dehydrated wet paper from the suction press roll (41) for the second time.
  • the second touch roll (42) is a perforated plain roll of no vacuum.
  • the felt roll (44) enables the felt to rotate following by the felt loop.
  • the felt guide roll (43) plays a role of performing automatic return for enabling the felt to continuously run without escaping from the central orbit.
  • the felt (45) plays a role of conveyer for transferring the wet paper and provides protection of the wet paper from damage in the case of pressing and dehydrating the wet paper.
  • pulp fluid discharged from the head box are supplied between the out wire belt (25) and the inner wire belt (33) which lies one upon another and rotate around the forming roll (24).
  • the dilute pulp fluid is dehydrated by pressure of tension of the out wire belt (25).
  • the wet paper filtered by the out wire and the inner wire is firstly adhered and transferred onto the inner wire and secondly transferred onto the felt by vacuum of pickup system.
  • the wet paper on the felt secondly is dehydrated (strongly dehydrated) on the suction press roll and the second touch roll and is transferred and dried onto the Yankee dryer.
  • the present inventor has being studied for improving such problems of the conventional paper-manufacturing system for a long time and finally completed the present invention.
  • the present invention provides a new improved paper-manufacturing system.
  • the present inventor omitted the function of the inner wire part from the conventional paper- manufacturing system and shortened three processes into two process by replacing the function of the inner wire part with the felt loop.
  • the rotations of out wire and the forming roll were reversed and the head box located at the lower part between the our wire part (20) and the inner wire part (30) is equipped at upper part between the our wire part (20) and the felt (33) and the supply function of pulp fluid is greatly improved.
  • the dehydrating function one of the three core function of paper-manufacturing system, is greatly improved (a high-speed function).
  • the paper quality is quietly improved by improving the forming function.
  • Pick up function and transferring function (transferring function of wet paper) are greatly improved. Accordingly, the conventional paper-manufacturing system can be greatly improved without any installation or any investment by the present invention.
  • the present invention also provides a method for reforming the conventional paper-manufacturing system.
  • Fig. 2 is a system showing paper-manufacturing processes of the present invention.
  • the paper-manufacturing processes of the present invention are composed of head box (10) for providing pulp fluid, out wire part (20), press part (40) and dryer part (50).
  • the head box (10) located at the lower part between the our wire part (20) and the inner wire part (30) in the conventional system is equipped at upper part between the our wire part (20) and the felt (33).
  • the inner wire part present in the conventional system is omitted and the press part (40) is directly connected with forming roll (24).
  • the head box (10) located at the upper part between the our wire part (20) and the felt (33) is the part for distributing pulp fluid for manufacturing paper on mesh of the wire belt (25) and plays an important role for distributing the pulp fluid uniformly on the mesh of the wire belt (25) having broad width (the width 3 ⁇ 5m) and high speed (1500m/min equivalent to 90km/h).(The concentration of the average pulp fluid is about 0.15% of the pulp content).
  • the out wire part (20) is composed of the wire roll (21), the wire guide roll (22), the water tray (23), the forming roll (24) and the wire belt (25), and plays a role for enabling the wire rolls (about 5 ⁇ 6 rolls) (21) to rotate the wire belt (25) around the wire loop.
  • the diameters of the wire rolls are different in accordance with the speed and the width, and are about 300 ⁇ 500mm.
  • the surface of the wire rolls is composed of elastomers such as rubber and other elastic materials.
  • the wire guide roll (22) plays a role of performing automatic return of the wire belt (25) for enabling the wire belt (25) to continuously run without escaping from the central orbit and is coated with an elastomer such as rubber like the wire roll.
  • the pulp fluid which is supplied on the mesh of wire belt (25) from the head box (10) is composed of about 99.8% of water and about 0.2% of pulp and a large amount of water is discharged outside the wire box.
  • the water tray (23) is a tub for taking in and moving water instantaneously discharged from the wire box.
  • the wire belt (25) is equipped with a net for discharging and filtered water after receiving dilute pulp fluid.
  • the press part (40) is composed of the suction press roll (41), the second touch roll (42), the felt guide roll (43), the felt roll (44) and the felt (45).
  • the forming roll (24) is a large-sized driving roll and rotates with making out wire part (20) and wire belt (25) contact concurrently. Dehydrating and sheet-forming are accomplished on this forming roll (24).
  • the suction press roll (41) is a vacuum roll for pressing moisture of wet paper to the dryer surface with high pressure and absorbing the water.
  • the outer shell rotates. However as the outer shell is equipped with vacuum box inside discharges the dehydrated water to the outside.
  • the second touch roll (42) is a press roll for removing moisture of the dehydrated wet paper from the suction press roll (41) for the second time.
  • the second touch roll (42) is a perforated plain roll of no vacuum.
  • the felt roll (44) enables the felt to rotate following by the felt loop.
  • the felt guide roll (43) plays a role of performing automatic return for enabling the felt to continuously run without escaping from the central orbit.
  • the felt (45) plays a role of conveyer for transferring the wet paper and provides protection of the wet paper from damage during the course of pressing and dehydrating the wet paper.
  • pulp fluid discharged from the head box (10) are supplied onto the forming roll (24) between the out wire belt (25) and felt (45) which lies one upon another and rotate around the forming roll (24).
  • the dilute pulp fluid is drastically dehydrated by pressure of the tension of the out wire belt (25), the falling power of the pulp fluid and the centrifugal power.
  • the wet paper filtered by the out wire is ideally adhered and transferred onto the felt, which has a strong adhesive power. Accordingly, the present system can be operated with high speed than in the conventional system without using pick up equipment and can produce a good yield and good quality of paper.
  • the wet paper on the felt is secondly dehydrated (strongly dehydrated) on the suction press roll and the second touch roll and is transferred and dried onto the dryer part (50) such as Yankee dryer.
  • the present system has excellent effects when compared with those of the conventional system.
  • the inner wire part present in the conventional system is omitted and the inner wire part is replaced with felt loop and two processes are omitted to one process.
  • the rotations of out wire and the forming roll were reversed and the head box located at the lower part between the our wire part (20) and the inner wire part (30) is equipped at upper part between the our wire part (20) and the felt (33) and the supply function of pulp fluid is greatly improved.
  • the dehydrating function one of the three core functions of paper-manufacturing system, is greatly improved (a high-speed function).
  • the paper quality is quietly improved by improving the forming function.
  • the pick up function and transferring function (transferring function of wet paper) are greatly improved. Accordingly, the conventional paper-manufacturing system can be greatly improved without any installation or any investment by the present invention.

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  • Paper (AREA)
EP03000060A 2003-01-07 2003-01-07 Machine pour la fabrication de papier Withdrawn EP1437443A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03000060A EP1437443A1 (fr) 2003-01-07 2003-01-07 Machine pour la fabrication de papier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03000060A EP1437443A1 (fr) 2003-01-07 2003-01-07 Machine pour la fabrication de papier

Publications (1)

Publication Number Publication Date
EP1437443A1 true EP1437443A1 (fr) 2004-07-14

Family

ID=32479875

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03000060A Withdrawn EP1437443A1 (fr) 2003-01-07 2003-01-07 Machine pour la fabrication de papier

Country Status (1)

Country Link
EP (1) EP1437443A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3691010A (en) * 1970-07-27 1972-09-12 Kimberly Clark Co Method and apparatus for dewatering paper webs
US3740312A (en) * 1971-10-01 1973-06-19 Beloit Corp Structure for threading paper machine
US4055461A (en) * 1975-09-17 1977-10-25 Valmet Oy Paper machine with single-wire and curved twin-wire formers
DE19548747A1 (de) * 1995-12-23 1997-07-03 Voith Sulzer Papiermasch Gmbh Pressenpartie
WO2001088259A1 (fr) * 2000-05-18 2001-11-22 Metso Paper Karlstad Ab Machine a papier crepe et sa section presse

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3691010A (en) * 1970-07-27 1972-09-12 Kimberly Clark Co Method and apparatus for dewatering paper webs
US3740312A (en) * 1971-10-01 1973-06-19 Beloit Corp Structure for threading paper machine
US4055461A (en) * 1975-09-17 1977-10-25 Valmet Oy Paper machine with single-wire and curved twin-wire formers
DE19548747A1 (de) * 1995-12-23 1997-07-03 Voith Sulzer Papiermasch Gmbh Pressenpartie
WO2001088259A1 (fr) * 2000-05-18 2001-11-22 Metso Paper Karlstad Ab Machine a papier crepe et sa section presse

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