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EP3167115B1 - Machine pour la production d'une bande de matière fibreuse - Google Patents

Machine pour la production d'une bande de matière fibreuse Download PDF

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Publication number
EP3167115B1
EP3167115B1 EP15710756.6A EP15710756A EP3167115B1 EP 3167115 B1 EP3167115 B1 EP 3167115B1 EP 15710756 A EP15710756 A EP 15710756A EP 3167115 B1 EP3167115 B1 EP 3167115B1
Authority
EP
European Patent Office
Prior art keywords
press
drying cylinder
machine
shoe
press nip
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.)
Active
Application number
EP15710756.6A
Other languages
German (de)
English (en)
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EP3167115A1 (fr
Inventor
Thomas Scherb
Ronaldo Parucker
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.)
Voith Patent GmbH
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Voith Patent GmbH
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Filing date
Publication date
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Publication of EP3167115A1 publication Critical patent/EP3167115A1/fr
Application granted granted Critical
Publication of EP3167115B1 publication Critical patent/EP3167115B1/fr
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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
    • D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type
    • 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
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • 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
    • D21F5/02—Drying on cylinders
    • D21F5/021—Construction of the cylinders

Definitions

  • the invention relates to a machine for producing a fibrous web, in particular a tissue or tissue paper web or a single-sided smooth fibrous web, comprising at least one press nip formed between a press shoe comprising a press shoe and a drying cylinder, through which a water-absorbent carrier tape, a water-impermeable press belt and the fibrous web passed are, wherein the drying cylinder comprises a cylindrical part and the end face in each case a front cover.
  • the invention also relates to a method for producing a fibrous web, in particular a tissue or tissue paper web or a single-sided smooth fibrous web.
  • Machines of this type are known. This is how the document describes DE 19860687 A1
  • a machine with a press nip formed between a shoe press unit and a drying cylinder for dewatering tissue webs It is proposed to use a short press shoe in order to achieve a higher maximum pressure in the press nip at a maximum allowable Yankee cylinder line load of 90kN / m. This achieves a higher dry content after the shoe press unit.
  • the document US2010 / 0000696 A1 describes a structured tape intended for producing a structured fibrous web in a machine.
  • the machine comprises a shoe press nip formed between a shoe press roll having a press shoe and a Yankee drying cylinder.
  • the fibrous web is guided on the structured band through the shoe press nip, structured and transferred to the cylindrical surface of the Yankee drying cylinder for drying.
  • the object of the invention is to improve machines of this type and methods for producing such fibrous webs in terms of drying efficiency and cost-effectiveness.
  • a machine for producing a fibrous web, in particular a tissue or hygienic paper web or a unilaterally smooth fibrous web, with at least one press nip formed between a shoe press unit comprising a press shoe and a steam-heated drying cylinder, through which a water-absorbing carrier tape water-impermeable press belt and the fibrous web are passed, wherein the drying cylinder comprises a cylindrical part and the end face each having a front cover, immediately after the press nip the fibrous web is transferred to the hot surface of the cylindrical part of the steam-heated drying cylinder and dried and wherein the cylindrical part of the drying cylinder at least partially made of steel consists.
  • the water-absorbing carrier tape is designed as a felt belt and that the cylindrical part of the drying cylinder has a coating.
  • the heat flow to the fibrous web can be increased for more efficient dewatering compared to a cast iron drying cylinder.
  • the drying cylinder is exposed during operation mechanical and thermal loads.
  • the mechanical loads are essentially composed of the vapor pressure inside the drying cylinder and the pressure of the shoe press unit. Thermal stress results from the heating and the different thermal conditions between the center of the drying cylinder and the two edge zones.
  • the use of steel instead of cast iron requires lower safety margins in the strength-appropriate dimensioning.
  • the resulting higher mechanical load capacity of the steel drying cylinder allows higher line forces through the shoe press unit.
  • the wall thickness at the same mechanical load by the internal pressure of the steam-heated drying cylinder can be made thinner than cast iron cylinder. This leads to a lower heat conduction resistance and to a higher heat flow.
  • the vapor pressure inside the drying cylinder can be increased. This allows higher temperatures to be achieved. This also leads to a higher heat flow and increased dewatering of the fibrous web. Due to the invention thus higher dry contents can be achieved after the press nip and the paper production can be increased by increasing the machine speed.
  • the machine is particularly suitable for making light weight papers such as tissue papers or plain papers.
  • the basis weight is in the range of less than 45 g / m 2 , in particular less than 30 g / m 2 , preferably less than 25 g / m 2 .
  • a preferred basis weight range is between 11 g / m 2 and 45 g / m 2 .
  • the drying cylinder has a creping doctor for creping the fibrous web. The compression results in a higher specific volume and a higher softness.
  • no creping doctor is provided, however a cleaning scraper for keeping clean the drying cylinder surface of the cylindrical part. This is very smooth and has a coating, such as a coating of chrome. The smoothness of the drying cylinder surface facing side of the fibrous web is thereby increased.
  • the drying cylinder may also comprise an outer coating of the cylindrical part of metallic or ceramic material for the production of tissue paper.
  • the water-absorbing carrier tape is designed as a felt belt.
  • the press nip formed in the web running direction has a length of less than 125 mm, in particular less than 80 mm, preferably less than 70 mm, in particular less than 60 mm.
  • a higher maximum pressing pressure in the press nip can be achieved for a given maximum line force.
  • the pressure curve has over the press nip length in the web running direction, by specifying a maximum length of the press nip, a steep rise and a steep drop, whereby the fibrous web is only briefly applied to the high maximum pressing pressure. The fibrous web is not compacted thereby. The specific volume thus remains almost intact.
  • the press shoe is pressed against the drying cylinder to form the press nip. It is advantageous if the press shoe made of metal, in particular bronze or aluminum. This achieves a uniform pressure profile in the transverse direction of the machine as well as in the web running direction. This in turn results in improved transverse moisture profiles and longitudinal moisture profiles in the fibrous web and thus improves the quality of the fibrous web produced.
  • the shoe press unit comprises at least two, each extending in the transverse direction and in the web running direction side by side, pressing elements for pressing the press shoe against the drying cylinder.
  • the pressing elements can each be designed, for example, as pressure hoses.
  • the pressure hoses are preferably independently pressurizable.
  • the profile of the pressing pressure in the web running direction can be adapted to the given production conditions.
  • the maximum pressing pressure itself and also its position in the web running direction can be set exactly.
  • the second contact pressure element considered in the web running direction is pressed more strongly than the first contact pressure element.
  • the exact adjustment of the compression pressure profiles in the transverse direction and in the web running direction is particularly at high heat flux densities, as they are possible by using a drying cylinder made of steel, an advantage.
  • the pressing elements extend substantially over the entire press nip in the transverse direction, but at least in the region of the fibrous web width. Additional pressing elements in the edge regions of the press nip can be avoided.
  • the press shoe at least in the region of the press nip, has an average press shoe thickness which is equal to or less than 20 mm, in particular equal to or less than 18 mm, preferably equal to or less than 16 mm.
  • This has the advantage that the pressing pressure profile in the transverse direction, in particular in the edge regions of the press nip, runs uniformly and constantly.
  • the effects of geometric variations of the drying cylinder, for example in the edge regions due to the vapor pressure and the different thermal conditions between the drying cylinder center and the two edge zones can be compensated.
  • the flexible soft press shoe can conform to the contour of the drying cylinder during operation of the machine.
  • the press shoe thickness in the web running direction is not quite constant. Approximately in the middle of the press nip the press shoe thickness is thereby slightly thinner than at the beginning and at the end of the press nip.
  • the median press shoe thickness is therefore the average of the values of the press shoe thickness at the beginning, in the middle and at the end of the press nip.
  • the press shoe at least in the region of the press nip, has an average press shoe thickness which is equal to or greater than 10 mm, in particular equal to or greater than 12 mm, preferably equal to or greater than 14 mm.
  • the press shoe thus has a minimum thickness, which on the one hand enables a uniform pressure profile in the web running direction over the entire press nip. This resulting minimum bending stiffness ensures a constant position of the press nip end in the web running direction over the entire width of the press nip in the transverse direction. Due to the sharp limitation of the press-nip end, a very strong and even over the width constant pressure drop of the pressing pressure at the end of the press nip can be achieved.
  • a rewetting of the fibrous web by the water-absorbing carrier tape at the end of the press nip can be avoided or at least greatly reduced.
  • the Drainage efficiency is thereby increased considerably. Moisture streaks in the fibrous web due to uneven remoistening can be avoided by the high and constant width pressure drop.
  • the drying cylinder is associated with a drying hood for impinging the fibrous web with steam and / or hot air.
  • the drying cylinder expediently has a diameter of more than 3 m, in particular more than 4 m, and the interior is filled with steam at a pressure equal to or greater than 0.5 MPa (5 bar), in particular equal to or greater than 0.6 MPa (6 bar), preferably of equal to or greater than 0.7 MPa (7 bar) acted upon.
  • the drying cylinder can advantageously be so charged with steam that the surface temperature of the cylindrical part on the outside after the creping doctor or after removal of the fibrous web is more than 100.degree. C., in particular more than 120.degree.
  • This temperature level reduces the viscosity of the water contained in the fibrous web in the press nip to optimum values.
  • the end covers have a thermal insulation on the outside and / or on the inside. This reduces heat losses and improves the energy balance.
  • the shoe press unit is assigned a safety device for controlling the control of the press nip, the control unit, in the absence of the fibrous web on the water-absorbent carrier tape, causing the press elements to be deactivated and / or the shoe press unit to be swung off. Damage to or impairment of the water-absorbing carrier tape or the water-impermeable press belt can be avoided.
  • the press shoe with a line force of equal to or more than 90 kN / m, in particular equal to or more than 110 kN / m, preferably equal to or more than 120 kN / m can be pressed against the drying cylinder.
  • the drying cylinder is designed and dimensioned in a preferred embodiment so that it can be acted upon by a line force between 60 kN / m and 140 kN / m, preferably between 60 kN / m and 120 kN / m.
  • the drying cylinder advantageously has grooves on the inside of the cylindrical part for increasing the mechanical stability and increasing the heat flow.
  • the wall thickness of the cylindrical part of the drying cylinder is, without consideration of optional grooves, expediently less than 55 mm, preferably less than or equal to 45 mm.
  • the pressure profile resulting in the press nip in the web running direction at the end of the press nip has a pressure drop of more than 800 kPa / mm, in particular more than 1000 kPa / mm, preferably more than 1100 kPa / mm. This minimizes or prevents rewetting of the fibrous web by the water-absorbing carrier tape.
  • the machine comprises a headbox, a peripheral outer sieve, a circulating water-absorbing carrier tape, wherein the headbox emits a pulp suspension between the rotating outer sieve and the circulating water-absorbing carrier tape in the form of a jet, and the outer sieve and the water-absorbing carrier tape partially wrap around a forming roller and wherein the fiber suspension is dewatered in the looping area and the formed fibrous web is guided on the water-accepting carrier belt for further dewatering over an evacuated roller and through the press nip.
  • the headbox emits a pulp suspension between the rotating outer sieve and the circulating water-absorbing carrier tape in the form of a jet
  • the outer sieve and the water-absorbing carrier tape partially wrap around a forming roller and wherein the fiber suspension is dewatered in the looping area and the formed fibrous web is guided on the water-accepting carrier belt for further dewatering over an evacuated roller and through the press nip.
  • the object is also achieved by a method according to claim 17 for producing a fibrous web, in particular a tissue or tissue paper web or a single-sided smooth fibrous web.
  • the fibrous web and a water-absorbing carrier tape, and a water-impermeable press belt are passed through at least one press nip formed between a shoe press unit comprising a press shoe and a drying cylinder, wherein the drying cylinder comprises a cylindrical part and an end cap on the front side.
  • the cylindrical part of the drying cylinder is at least partially made of steel.
  • FIG. 1 a machine 1 according to the invention is shown using the example of a known crescent former.
  • the usual Sauganpresswalze is replaced by a shoe press unit 5.
  • the drying cylinder 7 is associated with a creping doctor as it is commonly used for the production of creped tissue papers.
  • This machine 1 is also suitable for the production of one-sided smooth papers with small modifications.
  • no creping doctor is provided. It is replaced by a cleaning scraper to keep clean the drying cylinder surface of the cylindrical part 8.
  • This is very smooth and preferably has a coating, such as a coating of chromium. In this case, the fibrous web 2 produced is drawn off the drying cylinder surface 8 in free tension.
  • the machine 1 comprises a headbox which emits a fibrous suspension between a peripheral outer sieve and a circulating water-absorbing carrier band 11 in the form of a jet.
  • the water-absorbing carrier tape 11 is designed as felt.
  • the outer screen and the felt 11 partially wrap around a forming roller.
  • the pulp suspension is dewatered and the formed fibrous web 2 lying on the felt 11 is guided for further dewatering over an evacuated roll and through the press nip 10.
  • the press nip 10 is formed by a press shoe 6 comprising a shoe press unit 5 and the drying cylinder 10. Immediately after the press nip 10, the fibrous web 2 is transferred to the hot surface of the cylindrical part 8 of the steam-heated drying cylinder 7 and dried.
  • the drying cylinder 7 is partially surrounded by a drying hood 14 for impinging the fibrous web 2 with steam and / or hot air. Thereafter, the fibrous web 2 is creped by a creping doctor and removed from the surface of the cylindrical portion 8 of the steam-heated drying cylinder 7 and fed via a measuring frame for measuring quality parameters of the fibrous web 2 of the reeling.
  • the shoe press unit 5 comprises two, each in the transverse direction 4 extending and in the web running direction 3 juxtaposed, pressing elements (13.1, 13.2) for pressing the press shoe 6 against the drying cylinder 7.
  • the pressing elements (13.1, 13.2) are designed as pressure hoses.
  • the pressure hoses are pressurized independently of each other.
  • the profile of the pressing pressure in the web running direction 3 can be adapted to the given production conditions.
  • the maximum pressing pressure itself and also its position in the web running direction 3 can be set exactly.
  • the second contact pressure element (13.2), viewed in the web running direction 3 is pressed more strongly than the first pressure element (13.1).
  • the exact adjustment of the compression pressure profiles in the transverse direction 4 and in the web running direction 3 is particularly at high heat flux densities, as they are possible by using a drying cylinder 7 made of steel advantage.
  • the steam-heated drying cylinder 7 comprises an end cap on the front side.
  • the front cover 9 are executed on its outside with a thermal insulation. This reduces heat losses and improves the energy balance.
  • the drying cylinder 7 has a diameter of 4.8 m and the interior can be acted upon with steam at a pressure of 0.7 MPa (7 bar).
  • the cylindrical part 8 has an outer coating to assist the creping process.
  • the press nip 10 has a length of 55 mm in the web running direction 3. As a result, a higher maximum pressing pressure in the press nip 10 can be achieved for a given maximum line force.
  • the press shoe 6 is pressed against the drying cylinder 7 to form the press nip 10.
  • the press shoe 6 is made of metal, in particular bronze or aluminum and has a ground surface.
  • the shoe press unit 5 is assigned a safety device for opening the press nip 10, comprising a control or regulating unit. or control unit, in the absence of the fibrous web 2 on the water-absorbing carrier tape 11, causes the pressing elements (13.1, 13.2) of the press shoe to be deactivated and / or the shoe press unit 5 to be swiveled. Damage to or impairment of the water-absorbing carrier tape 11 or the water-impermeable press belt 12 can thus be avoided.
  • the FIG. 2 shows a part of the FIG. 1 with a shoe press unit 5 and a drying cylinder 7 in a simplified representation.
  • the shoe press unit 5 comprises a press shoe 6 and pressing elements (13.1, 13.2) which are supported on a machine-width yoke mounted in the edge regions of the machine 1. These elements are surrounded by a circumferential, water-impermeable press belt 12. The interior of the water-impermeable press belt 12 is sealed from the environment.
  • the two pressing elements (13.1, 13.2) each extend in the transverse direction 4 and are arranged next to one another in the web running direction 3. They press the press shoe 6 to form a press nip 10 against the drying cylinder 7.
  • the pressing elements (13.1, 13.2) are designed as pressure hoses.
  • the pressure hoses are independently pressurized.
  • the profile of the pressing pressure in the web running direction 3 can be adapted to the given production conditions.
  • the maximum pressing pressure itself and also its position in the web running direction 3 can be set accurately.
  • the second contact pressure element (13.2) viewed in the web running direction 3, is pressed more strongly than the first pressure element (13.1).
  • FIG. 3 shows a press shoe 6 in a simplified representation of the machine 1 according to Figure l and a pressure profile in the press nip 10 in the web running direction 3.
  • the press shoe 6 has in the region of the press nip 10, an average press shoe thickness 15, which is smaller than 20 mm.
  • This has the advantage that the pressing pressure profile in the transverse direction 4, in particular in the edge regions of the press nip 10, runs uniformly and constantly.
  • the effects of geometric variations of the drying cylinder 7, for example in the edge regions due to the vapor pressure and the different thermal conditions between the drying cylinder center and the two edge zones can be compensated.
  • the flexible flexible press shoe 10 can conform to the contour of the drying cylinder during operation of the machine, so that the compression pressure profile in the transverse direction 4 is constant.
  • the press shoe 6 Since the press shoe 6 is adapted to the diameter of the drying cylinder 7, the press shoe thickness (15.1, 15.2) in the web running direction 3 is not completely constant. Approximately in the middle of the press nip 10, the press shoe thickness is thereby slightly thinner than at the beginning and at the end of the press nip 10.
  • the average press shoe thickness is therefore the mean of the values of the press shoe thickness (15.1, 15.2) at the beginning, in the middle and at the end of the press nip 10.
  • the press shoe has an average press shoe thickness (15), which is 10 mm, of the press nip 10.
  • the press shoe 10 thus has a minimum thickness, which on the one hand enables a uniform pressure profile in the web running direction 3 over the entire press nip.
  • This resulting minimum bending stiffness ensures a constant position of the press nip end in Web running direction 3 and this over the entire width of the press nip in the transverse direction 4.
  • the sharp boundary of the press nip can be a very strong and also across the width constant pressure drop of the pressing pressure at the end of the press nip 10 reach.
  • a rewetting of the fibrous web 2 by the water-absorbing carrier tape 11 at the end of the press nip 10 can be avoided or at least greatly reduced.
  • the drainage efficiency is thereby significantly increased. Moisture streaks in the fibrous web due to uneven remoistening can be avoided by the high and constant width pressure drop.
  • a pressure profile in the web running direction 3 is shown schematically.
  • the pressing pressure begins at the beginning of the press shoe 6 with a gentle rise and reached shortly before the end of the press shoe 6, the maximum pressing pressure, which drops very steeply to the end.
  • values in the pressure drop of more than 1000 kPa / mm are constantly achieved across the width in the transverse direction of the press nip 10. This minimizes or prevents rewetting of the fibrous web 2 by the water-absorbing carrier tape 11.
  • the resulting in the press nip pressure profile in the web running direction has in this example at a line force of 120 kN / m, a maximum pressure of 4.5 MPa.

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  • Sanitary Thin Papers (AREA)

Claims (17)

  1. Machine (1) de fabrication d'une nappe de matière fibreuse (2), en particulier d'une nappe de papier-tissu ou de papier hygiénique ou d'une nappe de matière fibreuse lisse d'un côté (2), comprenant au moins une fente de pressage (10) formée entre une unité de presse à sabot (5) comprenant un sabot de presse (6) et un cylindre de séchage (7) chauffé à la vapeur, à travers laquelle fente de pressage sont guidées une bande de support recevant de l'eau (11), une bande de pressage (12) imperméable à l'eau, et la nappe de matière fibreuse (2), le cylindre de séchage (7) comprenant une partie cylindrique (8) et, du côté frontal, à chaque fois un couvercle frontal (9), la nappe de matière fibreuse (2), immédiatement après la fente de pressage (10), étant transférée à la surface chaude de la partie cylindrique (8) du cylindre de séchage (7) chauffé à la vapeur et étant séchée, et la partie cylindrique (8) du cylindre de séchage (7) étant constituée au moins en partie d'acier,
    caractérisée en ce que
    la bande de support recevant de l'eau (11) est réalisée sous forme de bande de feutre et en ce que la partie cylindrique (8) du cylindre de séchage (7) présente un revêtement.
  2. Machine (1) selon la revendication 1,
    caractérisée en ce que
    la fente de pressage formée (10) possède, dans la direction longitudinale de la nappe (3), une longueur inférieure à 125 mm, en particulier inférieure à 80 mm, de préférence inférieure à 70 mm, en particulier inférieure à 60 mm.
  3. Machine (1) selon la revendication 2,
    caractérisée en ce que
    le sabot de presse (6), pour former la fente de pressage (10), est pressé contre le cylindre de séchage (7) et se compose de métal, en particulier de bronze ou d'aluminium.
  4. Machine (1) selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    l'unité de presse à sabot (5) comprend au moins deux éléments de pressage (13.1, 13.2) s'étendant dans la direction transversale (4) et disposés les uns à côté des autres dans la direction longitudinale de la nappe (3), pour le pressage du sabot de presse (6) contre le cylindre de séchage.
  5. Machine (1) selon la revendication 4,
    caractérisée en ce que
    les éléments de pressage (13.1, 13.2) s'étendent sur toute la fente de pressage (10) dans la direction transversale (4).
  6. Machine (1) selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    le sabot de presse (6) présente, au moins dans la région de la fente de pressage (10), une épaisseur de sabot de presse moyenne (15) qui est inférieure ou égale à 20 mm, notamment inférieure ou égale à 18 mm, de préférence inférieure ou égale à 16 mm.
  7. Machine (1) selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    le sabot de presse (6), au moins dans la région de la fente de pressage (10), présente une épaisseur de sabot de presse moyenne (15) qui est supérieure ou égale à 10 mm, notamment supérieure ou égale à 12 mm, de préférence supérieure ou égale à 14 mm.
  8. Machine (1) selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    les couvercles frontaux (9) disposés du côté frontal de la partie cylindrique (8) du cylindre de séchage (7) sont en acier et sont vissés ou soudés à la partie cylindrique (8) du cylindre de séchage (7), ou les couvercles frontaux (9) sont en fonte et sont vissés à la partie cylindrique du cylindre de séchage.
  9. Machine (1) selon l'une quelconque des revendications précédentes,
    caractérisée en ce
    qu'une hotte de séchage (14) destinée à exposer la nappe de matière fibreuse (2) à de la vapeur et/ou de l'air chaud est associée au cylindre de séchage (7) .
  10. Machine (1) selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    le cylindre de séchage (7) présente un diamètre supérieur à 3 m, en particulier supérieur à 4 m et l'espace interne peut être sollicité avec de la vapeur ayant une pression supérieure ou égale à 0,5 MPa (5 bars), en particulier supérieure ou égale à 0,6 MPa (6 bars), de préférence supérieure ou égale à 0,7 MPa (7 bars).
  11. Machine (1) selon l'une quelconque des revendications précédentes,
    caractérisée en ce
    qu'un dispositif de sécurité pour l'ouverture de la fente de pressage (10), comprenant une unité de commande ou de réglage, est associé à l'unité de presse à sabot (5), l'unité de commande ou de réglage, en l'absence d'une nappe de matière fibreuse (2) sur la bande de support (11) recevant de l'eau, déclenchant la désactivation des éléments de pressage (13.1, 13.2) et/ou le rabattement de l'unité de presse à sabot (5).
  12. Machine (1) selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    le sabot de presse peut être pressé avec une force linéaire supérieure ou égale à 90 kN/m, en particulier supérieure ou égale à 110 kN/m, de préférence supérieure ou égale à 120 kN/m contre le cylindre de séchage (7).
  13. Machine (1) selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    le profil de pression résultant dans la fente de pressage (10) dans la direction d'avance de la nappe (3) à la fin de la fente de pressage (10) présente, dans le cas d'une force linéaire inférieure ou égale à 140 kN/m ; en particulier inférieure ou égale à 120 kN/m, une pression maximale supérieure à 2 MPa, en particulier supérieure à 3MPa, et de préférence supérieure à 4mPa.
  14. Machine (1) selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    le profil de pression résultant dans la fente de pressage (10) dans la direction d'avance de la nappe (3) à la fin de la fente de pressage (10) présente une chute de pression supérieure à 800 kPa/mm, en particulier supérieure à 1000 kPa/mm, de préférence supérieure à 1100 kPa/mm.
  15. Machine (1) selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    les couvercles frontaux (9) présentent une isolation thermique sur le côté extérieur.
  16. Machine (1) selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la machine (1) comprend une caisse de tête qui délivre, sous la forme d'un jet, une suspension de matière fibreuse entre un tamis extérieur périphérique et une bande de support périphérique (11) recevant de l'eau, et le tamis extérieur et la bande de support (11) recevant de l'eau entourent partiellement un cylindre de formage et la suspension de matière fibreuse, dans la région d'enveloppement, étant déshydratée et la nappe de matière fibreuse formée (2) reposant sur la bande de support (11) recevant de l'eau étant guidée en vue de sa déshydratation supplémentaire par le biais d'un cylindre aspiré et à travers la fente de pressage (10).
  17. Procédé de fabrication d'une nappe de matière fibreuse (2), en particulier d'une nappe de papier tissu ou de papier hygiénique ou d'une nappe de matière fibreuse lisse d'un côté (2), la nappe de matière fibreuse (2) et une bande de support (11) recevant de l'eau et une bande de pressage imperméable à l'eau (12) étant guidées à travers au moins une fente de pressage (10) formée entre une unité de presse à sabot (5) comprenant un sabot de presse (6) et un cylindre de séchage (7) chauffé à la vapeur, le cylindre de séchage (7) comprenant une partie cylindrique (8) et, du côté frontal, à chaque fois un couvercle frontal (9), et la partie cylindrique (8) du cylindre de séchage (7) étant réalisée au moins en partie en acier,
    caractérisé en ce que
    la bande de support (11) recevant de l'eau est réalisée sous forme de bande de feutres et en ce que la partie cylindrique (8) du cylindre de séchage (7) présente un revêtement.
EP15710756.6A 2014-07-11 2015-03-13 Machine pour la production d'une bande de matière fibreuse Active EP3167115B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014213512.5A DE102014213512A1 (de) 2014-07-11 2014-07-11 Maschine zur Herstellung einer Faserstoffbahn
PCT/EP2015/055284 WO2016005064A1 (fr) 2014-07-11 2015-03-13 Machine pour la production d'une bande de matière fibreuse

Publications (2)

Publication Number Publication Date
EP3167115A1 EP3167115A1 (fr) 2017-05-17
EP3167115B1 true EP3167115B1 (fr) 2019-01-02

Family

ID=52692621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15710756.6A Active EP3167115B1 (fr) 2014-07-11 2015-03-13 Machine pour la production d'une bande de matière fibreuse

Country Status (5)

Country Link
EP (1) EP3167115B1 (fr)
CN (1) CN106661836B (fr)
BR (1) BR112017000527A2 (fr)
DE (1) DE102014213512A1 (fr)
WO (1) WO2016005064A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3306316A1 (fr) 2016-10-10 2018-04-11 Deutsches Krebsforschungszentrum Stiftung des Öffentlichen Rechts Protéine rep comme protéine antigène pour utilisation dans des dosages diagnostiques
EP3424942A1 (fr) 2017-07-07 2019-01-09 Deutsches Krebsforschungszentrum Protéine rep améliorée destinée à être utilisée dans un dosage de diagnostic
CN107938419A (zh) * 2017-12-19 2018-04-20 山东信和造纸工程股份有限公司 一种卫生纸机软靴压装置及其应用
EP3517960A1 (fr) 2018-01-30 2019-07-31 Deutsches Krebsforschungszentrum Utilisation de la protéine rep bmmf comme biomarqueur pour le cancer du colon
DE102018123389A1 (de) * 2018-09-24 2020-02-13 Voith Patent Gmbh Maschine und Verfahren zur Herstellung einer Faserstoffbahn
DE102018123390A1 (de) * 2018-09-24 2020-03-26 Voith Patent Gmbh Maschine und Verfahren zur Herstellung einer Faserstoffbahn
DE102019119894A1 (de) * 2019-07-23 2021-01-28 Voith Patent Gmbh Presseneinheit

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Publication number Priority date Publication date Assignee Title
DE2605424A1 (de) * 1976-02-12 1977-08-25 Voith Gmbh J M Trockenzylinder fuer papiermaschinen
US4196689A (en) * 1977-01-17 1980-04-08 J. M. Voith Gmbh Apparatus for drying paper webs or the like
US4320582A (en) * 1979-03-09 1982-03-23 United States Steel Corporation Yankee Dryer and method of fabrication
DE19860687A1 (de) 1998-12-29 2000-07-06 Voith Sulzer Papiermasch Gmbh Maschine sowie Verfahren zur Herstellung einer Faserstoffbahn
DE19941336A1 (de) * 1999-08-31 2001-03-01 Voith Paper Patent Gmbh Trocknungsvorrichtung
DE102006021428A1 (de) * 2006-05-05 2007-11-08 Andritz Küsters GmbH & Co. KG Vorrichtung zum Bilden mindestens eines Langspalts
US8038847B2 (en) * 2008-07-03 2011-10-18 Voith Patent Gmbh Structured forming fabric, papermaking machine and method
EP2910679B1 (fr) * 2011-12-07 2017-05-17 Valmet Aktiebolag Rouleau à pincement augmenté pour une machine de fabrication de papier et procédé de production d'un papier de soie
DE102012104464A1 (de) * 2012-05-23 2013-11-28 Gapcon Gmbh Temperierbarer Zylinder zur Behandlung von flächigen Materialien
CN204849471U (zh) * 2014-07-11 2015-12-09 福伊特专利有限公司 用于制造纤维料幅的机器

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Also Published As

Publication number Publication date
BR112017000527A2 (pt) 2017-11-14
CN106661836B (zh) 2019-12-03
WO2016005064A1 (fr) 2016-01-14
CN106661836A (zh) 2017-05-10
DE102014213512A1 (de) 2016-01-14
EP3167115A1 (fr) 2017-05-17

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