US3643343A - Threading a paper web in a web dryer - Google Patents

Threading a paper web in a web dryer Download PDF

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Publication number
US3643343A
US3643343A US886835A US3643343DA US3643343A US 3643343 A US3643343 A US 3643343A US 886835 A US886835 A US 886835A US 3643343D A US3643343D A US 3643343DA US 3643343 A US3643343 A US 3643343A
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United States
Prior art keywords
web
threading
roll
driving
turning
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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
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US886835A
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English (en)
Inventor
Paul Henri Marchal
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.)
ROSS PULP & PAPER Inc
FLAKT ROSS Inc
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Midland Ross Corp
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Assigned to HERCULES INCORPORATED reassignment HERCULES INCORPORATED ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MIDLAND-ROSS CORPORATION
Assigned to FLAKT ROSS INC. reassignment FLAKT ROSS INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ROSS PULP & PAPER, INC.,
Anticipated expiration legal-status Critical
Assigned to ROSS PULP & PAPER, INC. reassignment ROSS PULP & PAPER, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: HERCULES INCORPORATED
Assigned to HERCULES INCORPORATED reassignment HERCULES INCORPORATED ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MIDLAND-ROSS CORPORATION
Assigned to FLAKT ROSS INC. reassignment FLAKT ROSS INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ROSS PULP & PAPER, INC.
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0063—Devices for threading a web tail through a paper-making machine
    • D21G9/0072—Devices for threading a web tail through a paper-making machine using at least one rope
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/06—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement with movement in a sinuous or zig-zag path
    • F26B13/08—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement with movement in a sinuous or zig-zag path using rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/12—Controlling movement, tension or position of material

Definitions

  • ABSTCT This disclosure pertains to a multipass web-treating apparatus particularly adapted for drying a paper web.
  • the web is transferred between passes or zones by turning rolls.
  • a threading device associated with the dryer utilizes turning sheaves which are associated with each turning roll over which at least one threading rope or tape travels.
  • a clutch is arranged to operatively associate each turning roll and tuming sheave to transmit rotary motion from the sheave to the roll such that the peripheral speed of the roll is equal to or greater than the linear speed of the threading rope or tape.
  • An attachment device is fixed to the tape to hook or unhook the end of a paper web to be threaded through the dryer.
  • the product web is supported and conveyed by the aerodynamic flow of gaseous fluid in the different treating zones and by mechanical effect of the turning roll outside of the treating zones.
  • the web is normally pulled through the dryer or other web-treating apparatus by an extracting mechanism generally made of two pinch rolls in between which the web is fed; one of these rolls is generally driven by a motor.
  • I utilize at least one endless band or belt traveling on as many turning sheaves as turning rolls, each of these sheaves being coaxially mounted with an associated turning roll and having substantially the same diameter as the turning roll.
  • This endless or continuous band or belt may take the form of an endless cable, rope, chain, tape or the like. As hereinafter used herein, such endless band or belt shall be generically referred to as a tape.
  • a device mounted at 90 with the endless tape which is capable of attaching then detaching the end of the product web which must be threaded through the treating apparatus.
  • Driving means is also provided for driving the endless tape at a speed commensurate to the time during which the product web must be exposed to the treating zones of the apparatus.
  • a clutch of the freewheeling or overrunning type which is installed between each turning roll and a driving wheel.
  • the driving wheel may itself be the turning sheave driven by the endless tape driving means or it may be a separate driving wheel driven by a secondary driving means synchronized with the first mentioned driving means.
  • the direction in which these clutches transmit the movement is such that the surface or peripheral speed of each turning roll is equal to the linear speed of the endless tape or, if required, the peripheral speed can be greater than the linear speed of the endless tape.
  • the attachment device travels around a turning roll, it travels at the same linear speed as the cylindrical surface of the turning roll, but when the product web passes around a turning roll, the product web might travel at a linear speed which is greater than the linear speed of the endless tape and thus communicate this linear speed to the cylindrical surface of the turning roll.
  • Such increase in linear speed of the product comes from the longitudinal shrinking introduced by the drying treatment to the product web. Allowing the product web to travel at a greater speed than the speed of the endless tape allows a free transmission of the tension of the product web towards the inlet of the apparatus.
  • This invention has other objects and mechanisms for accomplishing them which are used in conjunction with the foregoing apparatus as will be discussed more in detail later.
  • FIG. 1 is a schematic elevation partially in section wherein the different elements ofthis apparatus are shown in a position before the threading of the web to be treated in the apparatus;
  • FIG. 2 is similar to FIG. 1 but showing the different elements in a position once the web is threaded through the apparatus;
  • FIG. 3 is a schematic view of a. portion of the apparatus shown in FIGS. 1 and 2 illustrating a first embodiment of the invention
  • FIG. 4 is similar to FIG. 3 illustrating a second embodiment of the invention.
  • FIG. 5- is similar to FIG. 3 illustrating a third embodiment of the invention.
  • FIG. 6 is also similar to FIG, 3 illustrating a fourth embodiment of the invention.
  • FIG. 7 is a partial view of the apparatus shown in FIGS. 3 and 4;
  • FIG. 8 is a partial view of the apparatus shown in FIGS. 5 and 6;
  • FIG. 9 shows a section on an enlarged scale of an improved web engagement means, the engagement means shown in prethreading, stopped position;
  • FIG. 10 is similar to FIG. 9 showing the engagement means in a moving position
  • FIG. 11 is a plan schematic view showing a particular arrangement of the invention.
  • FIGS. 1 and 2 several parallel treatment zones are shown in which the paper web is supported by the aerodynamic effect of many air jets issuing from orifices 3 mounted in wall 4 of the header or plenum 5, these headers being installed throughout the treating zones.
  • Turning rolls 6 are installed to support the paper web when it passes from one zone to the other.
  • the web 2 travels from the exit end of one zone l to the entering end of the next zone by making a change in direction of around the turning rolls.
  • Other turning rolls 6 can be placed at the entering and leaving end of the apparatus.
  • the web 2 is supported by the aerodynamic effect of the air jets in the different zones and by the mechanical effect of the turning roll 6 outside of the zones.
  • the web 2 is extracted from the treating zones by an extracting mechanism having two pinch rolls 7 and 8 between which the web travels. At least one of these rolls is driven, for example, the pinch roll 7 may be driven by drive motor 9.
  • At least one endless tape 10 traveling over as many turning wheels or sheaves 11 as turning rolls 6, each of these turning sheaves it being installed at the end of the corresponding turning roll and having the same basic diameter as the corresponding turning roll.
  • An attachment device 12 is affixed perpendicularly to this endless tape 10, and the attachment device is capable of hooking and unhooking the end of the paper web 2 which must be threaded through the treating zones 1.
  • the driving sprocket 15 is driven by secondary or second driving means 16 which is synchronized with the above mentioned primary driving means 13.
  • the direction in which clutch 14 transmits the movement is such that the peripheral speed of the turning roll 6 is normally equal to the linear speed of the endless threading tape 10, but this peripheral speed can become greater if necessary. It can be readily understood that when the attachment device passes around a particular turning roll 6, it travels at the same linear speed as the outer surface of the turning roll 6, but when the paper web goes around the turning roll 6, this web can be going at a linear speed which is faster than the linear speed of the threading tape 10, and the linear speed of the web is communicated to the outer surface of the turning roll 6. Such an increase in linear speed from the paper web comes from the longitudinal shrinkage due to the drying of the web.
  • This freedom of the paper web to run at a greater speed than the speed of the threading tape 10 permits an unrestrained transmission of the tension of the web from the point of its attachment to the attachment means 12 towards the inlet of the apparatus.
  • each driving sprocket 15 is actually the turning sheave 11 itself, and the clutch 14 is installed between the above mentioned turning sheave l1 and the turning roll 6 itself.
  • the first and second driving means 13 and 16 are one single main wheel around which tape 10 is passed. This main wheel is rotated by motor 9 through the intermediate clutch device 17; the same motor 9 also drives the pinch roll 7.
  • each driving wheel or sprocket 15 is independent of its associated turning roll 6 and freely mounted on the shaft of its associated turning roll 6.
  • the clutch means 14 is installed between the driving sprocket l and the turning roll 6.
  • a chain transmission or drive 18 is used between each of the sprockets 15 and the second driving means 16.
  • This second driving means 16 is rotated by motor 9 preferably through a clutch 19.
  • the motor 9 also drives the pinch roll 7 as in the case of the arrangement illustrated in FIG. 3.
  • the primary drive means 13 comprises a wheel around which the endless tape passes, the primary drive means being rotated by motor 9 through a clutch 17.
  • the apparatus illustrated in FIG. 4 has the advantage over that shown in FIG. 3, in that it does not rotate the whole group of turning rolls 6 through the endless tape.
  • I can also use one of the two arrangements illustrated respectively in FIGS. 5 and 6 where two endless tapes 10 are installed, one at each end of the turning rolls, these endless tapes l0 advantageously being made in the form ofcables.
  • the two sheaves 11 affixed to the turning roll shaft at each end of the turning roll 6 serve the dual function of driving the turning roll and guiding the threading tape 10.
  • the clutch means 14 is installed between one of the above mentioned sheaves 11 and the turning roll 6 itself.
  • the first and second means of driving 13 and 16 are tied together on a common shaft in a manner to drive a tape 10 at each end of turning roll 6; and the common shaft is driven by the motor 9 through a clutch 20; this motor also drives the pinch roll 7.
  • the driving wheel or sprocket 15 is independent of the two sheaves 11 which are free to rotate on the turning roll shaft, and the clutch 14 is installed between the driving sprocket 15 and the turning roll 6.
  • a chain 21 may be provided between the driving sprocket l5 and the second driving means 16.
  • the second driving means 16 is driven by motor 9 through a clutch 22.
  • the motor 9 also drives the pinch roll 7 as in the case of the apparatus illustrated in FIG. 5.
  • the first driving means 13 is made up of the two main sheaves around which are passed respectively both endless tapes l0, and these two main sheaves are driven by the motor 9 through a clutch 20.
  • the arrangement illustrated in FIG. 6 has the advantage over FIG. 5 that it does not rotate the group of the turning rolls 6 using the endless tapes 10. The rotation of all the turning rolls, which may have considerable inertia as in the case of a great number of turning rolls and wide paper web, is achieved by the chain drive 21.
  • Attachment device 12 is shown in FIG. 7 for which the same reference numbers are used to indicate the different components as used in FIG. 3.
  • Attachment device 12 is made of a rigid beam 23 affixed perpendicularly to the endless tape 10, in the form of an outrigger; there is also a clamp 24 which may be closed or opened to hook or unhook the end of the product web 2, the width of this clamp 24 being a function of the resistance of the product web 2.
  • the beam 23 is fixed on the inside cable by fixation means 25 and guided on the outside cable by guiding means 26.
  • fixation means 25 and guided on the outside cable by guiding means 26.
  • guiding means 26 Such an assembly permits uneven speed of the cables of the endless tape 10.
  • a flexible wire or rope 27 is used between the outer end of the beam 23 and the inside cable to which the rope is affixed by means of fixing means 28. In threading, the web is first cut at an angle before being attached to the device 12.
  • This attaching device 12 is shown in FIG. 8 on which cross-reference numbers indicate same components as in FIG. 6.
  • Beam element 29 is mounted perpendicularly to the two endless tapes 10 by a connecting means 30.
  • Clamping device 31 is pin-mounted on the center of the beam 29 and may be closed or opened to hook or unhook the end of the paper web; the width of the clamp is determined by the resistance of the paper web.
  • the connecting means 30 must be adjustable at least at one end of the beam 29 and preferably at both ends. This adjustment may be made manually or automatically after each threading operation.
  • This attachment device 12 allows central threading of the paper web. Before threading, the paper web is first cut at an angle symmetrical to its longitudinal axis.
  • the clamp 24 or 31 of the attachment device is shown in detail in FIGS. 9 and 10.
  • This clamp is mounted in such a way that it will close automatically when the endless tape 10 is started.
  • Forward rod 32 having a length slightly longer than the width of the tail of the web is mounted parallel to the beam 23 or 29 of the attaching device.
  • Another rod 33 having a length equal to the forward rod 32, is parallel mounted to the rod 32 and is attached to it. Both rods are attached together by means ofa flexible blade 34 at each end.
  • each end of the rod 32 there are two arms 35 and 36 of equal length; they are hinged on the rod 32.
  • a jaw 37, 38 is mounted at the end of each arm 35, 36, respectively.
  • a spring 39 is provided to hold the arms 35 and 36 either open or closed. The open position is shown in FIG. 9, and the closed position is shown in FIG. 10.
  • the length of the arms 35 and 36 is such that when the arms 35 and 36 are closed by the spring 39 the jaws 37 and 38 come close to each other, behind the rod 33, as shown in FIG. 10.
  • Anchoring of the paper web is thereby achieved efficiently because the web 2 is wrapped around almost the whole peripheral surface of the rod 33 and then pinched between the two jaws 37 and 38.
  • a fixed latching rod 40 preferably collapsible is mounted in the path of one of the two arms 35 or 36 to close the clamp when the endless tape it) is started.
  • the preferred embodiment deals particularly with installation where the zones are horizontally mounted and where the aerodynamic effect of the air jets issued from orifices 3 in the headers 5 achieves the floating of the paper web.
  • the paper web Before entering into the treatment zones, the paper web is cut from the supply machine 411; the web at the exit end of the treating zone is extracted by pinch rolls 7 and 3 one of which is driven by motor 9 which in turn is controlled bya motor (not shown) delivering the web from the machine 41.
  • the tension variations in the paper web come principally from the longitudinal shrinkage or stretch in the hand during drying and also from the loss of height that the paper web has to go through from one pass to the other from top to bottom. Due to the teaching of this invention the tension of the web 2 is transmitted freely towards the inlet end of the dryer.
  • a tensiometer 42 which senses the position of the paper web before entering into the first pass or zone ll.
  • This tension control 42 transmits a signal S which varies the speed of the motor 9, in proportion to the speed of the motor delivering the paper web from the machine 41.
  • This tension controller 42 consists of a dancer roll 43 horizontally mounted and movable vertically, attached to a transmitter 45 by means of cable and pulley system 44.
  • the transmitter 455 can be, for example, a potentiometer delivering the signal S.
  • the lower position of the dancer roll 43 corresponds to a high speed of the motor 9, while the higher position of the dancer roll 43 corresponds to low speed of the motor 9.
  • the dancer roll 43 exerts a tension on the paper web during the threading operation due to its own weight. Under these conditions, when the paper web 2 enters at the top of the dryer and leaves at the bottom of the dryer, the tension exerted by dancer roll 43 is always either equal to or slightly higher than the weight corresponding to the projected vertical height of the paper web between the entering and leaving ends of the installation. The speed regulation of motor 9 is thus highly desirable. To take into consideration the drop in height which is imposed on the paper web 2 from one pass to the next lower one, it is advantageous to have a compensating device 46 acting on the pulley cable system 44 to increase the apparent weight of the dancer roll 43 as the drop in height takes place.
  • This compensating device 46 can be made of pneumatic cylinder 47, for example, whose piston rod is fixed to the cable system 44.
  • This cylinder 47 is fed by a positioner 48, which receives its signal from a detector 49.
  • This detector 49 follows the course of the paper web through the installation or dryer as the web is initially threaded therethrough.
  • This detector 49 can be a revolution counter mounted on the shaft of one of the turning rolls.
  • This compensation in apparent weight of the dancer roll 43 permits controlling the tension on the paper web at the level where it is attached to the clamping device 112, and during the threading operation, the compensating device 46 continuously increases the tension exerted by the dancer roll 43 up to a value reached at the end ofthe threading operanon.
  • FIG. lll A guide roll 50 at the exit of the last zone or pass, located, for example, between the last turning roll 6 and the pinch rolls 7 and 8, is pivotally fixed at one end 51 and movable at its other end.
  • the movable end of this roll is equipped with a motor 52.
  • the guide roll 50 is rotated by means of a pulley 53 mounted at one or both ends of the roll.
  • the diameter of pulley 53 is the same as the roll itself, and the endless tape in passing over pulley 53 drives the roll 50.
  • a freewheeling clutch 54 is installed between the pulley 53 and the roll 50 to permit a faster speed of the guide roll 50 than the speed of the pulley 53.
  • the motor 52 that positions the guide roll 50 may be pneumatic, hydraulic or electric.
  • Two detectors 55A and 55B are used on each side of the sheet. Two signals Da and Db comingfrom these detectors are fed into a differential relay 56. The output D of relay 56 is transmitted to the pneumatic motor 52 positioning the guide roll. When signals Da and Db are equal, the differential signal D is zero, and the pneumatic motor 52 does not move. If the sheet 2 is not centered, one of the two signals will be higher than the other, and the differential signal D will be applied to the pneu matic motor 52 via positioner 57.
  • the pneumatic motor 52 will then operate to change the position of the guide roll 50 and bring the sheet 2 into a new position in order to obtain a zero signal again from the relay S6.
  • the two detectors 55A and 558 can be mechanical, electric or optical usually transmitting an electrical output. This arrangement permits centering of the paper web in its theoretical path.
  • the attachment device 12 is brought to a level where the paper web 2 is coming off the machine 41, preferably in a vertically dlownward direction at the exit ofmachine 41.
  • the clamp 24 ofthe attachment device 12 is open, and the paper web travels between the rod 32 and the rod 33 of the clamp.
  • the pinch roll 8 is maintained open and away from the pinch roll 7 through the action of the mechanism 58.
  • Motor 9 is then started, and pinch roll 7 runs at a peripheral speed slightly higher than the speed at which the paper web is delivered by the machine 41 since the dancer roll 43 is in its lower position.
  • the product web then reaches under the dancer roll 43, and starts to raise it which brings the motor 9 toward a speed such that there is synchronism between the speed of the threading tape 10, pulling the attachment apparatus 112 and the paper web 2, and the speed at which the web 2 comes out of the machine 411.
  • the attachment device 12 passes over the turning roll 6 without changing its speed. During this threading, the drying of the web creates a longitudinal shrinkage of the web which generates a tension which is immediately sensed at the dancer roll 43 which starts to rise. The speed of the motor 9, and consequently the linear speed of the threading tape or tapes will decrease, and the point of attachment of the web will be subjected to a low tension which is very important in the case of a fragile product.
  • the attaching device 12 moves over the pinch roll 7 on turning wheel or wheels (not shown) mounted on the pinch roll driver.
  • One of the arms 35 or 36 of clamp 24 then operates an electrical contact 60, which actuates the mechanism 58 which in turn brings the pinch rolls 7 and 8 together and takes over extraction or driving of the paper web 2 without any change in speed.
  • the attachment device 12 next actuates an electrical contact 61 which disengages clutch 17 or 20 and stops the threading rope 10.
  • the clutch 19 or 22 is also disengaged which stops the turning rolls 6 through motor 9.
  • the threading operation of the web is then completed as shown in FIG. 2.
  • the attachment device 12 now being stopped can be detached from the paper web tail by opening the clamp 24
  • the attachment device 12 can now be reused for the next operation.
  • the attachment device 12 is then repositioned near machine 41 by manually engaging clutch 17 or 20.
  • Whichever embodiment of the invention is used there is a drying apparatus for web products, in which the threading device of the paper web is efficient, fast and sure.
  • This threading device may be made entirely automatic.
  • the threading device has the advantages of not submitting the paper web to any high tension, particularly at the attachment point. A relatively fragile paper web may be threaded easily.
  • the invention is not limited to the above specific embodiments shown in this application, nor to the different arrangements of its different components, but it also includes all sorts of variations within the spirit of the annexed claims.
  • a threading device for a multipass web-treating apparatus comprising in combination: a turning roll located at the end of each pass; threading and driving wheel means mounted at the end of each turning roll, said wheel means having a diameter substantially the same as the diameter of the associated turning roll; threading tape means traveling around said wheel means; an attachment device mounted perpendicularly on said threading tape means to engage the end of the web to be treated; driving means for driving said wheel means and driving said tape means at a speed commensurate with the time that said web must be exposed within the treating apparatus; and a clutch arranged to operatively associate each turning roll and driving wheel means to transmit rotary motion from said wheel means to said roll in a manner to maintain the peripheral speed of said roll equal to or greater than the linear speed of said threading tape means.
  • said threading and driving wheel means comprises a separate threading sheave having a diameter substantially the same as the diameter of the turning roll and a separate driving wheel and wherein said driving means comprises a first driving means for driving said tape and a second driving means for driving said driving wheel, said clutch being arranged to operatively associate each turning roll and said driving wheel.
  • said threading and driving wheel means comprises a separate threading sheave and a separate driving wheel located at each end of each turning roll and wherein said threading tape means comprises two threading tapes passing over the threading sheaves at each end of each turning roll.
  • attachment device comprises an outrigger attached to said tape means located at one end of said turning rolls.
  • attachment device comprises a beam attached by a connecting means to each threading tape.
  • a multipass web-treating apparatus including treatment zones mounted horizontally one above the other and wherein the web to be treated enters a dryer at a top zone and exits from the dryer from a bottom zone
  • the improvement comprising in combination: a dancer roll mounted for vertical movement in contact with the web being processed to vary the tension in said web; means for vertically moving said dancer roll; and compensating means for actuating said vertical moving means to increase the tension in said web as the web is threaded through the dryer from one zone to a next lower zone.
  • Apparatus according to claim 9 further comprising: a
  • Apparatus according to claim 10 wherein said detector comprises a revolution counter mounted on the shaft of a turning roll.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Paper (AREA)
  • Advancing Webs (AREA)
US886835A 1968-12-24 1969-12-22 Threading a paper web in a web dryer Expired - Lifetime US3643343A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR180506 1968-12-24

Publications (1)

Publication Number Publication Date
US3643343A true US3643343A (en) 1972-02-22

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US886835A Expired - Lifetime US3643343A (en) 1968-12-24 1969-12-22 Threading a paper web in a web dryer

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Country Link
US (1) US3643343A (fr)
DE (2) DE1956935C3 (fr)
ES (1) ES374100A1 (fr)
FI (1) FI49850C (fr)
FR (1) FR1598722A (fr)
GB (1) GB1240790A (fr)
SE (1) SE364087B (fr)
SU (1) SU406382A3 (fr)

Cited By (7)

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FR2457457A1 (fr) * 1979-05-19 1980-12-19 Vits Maschinenbau Gmbh Dispositif de relevage d'une bande de feuille dans un sechoir de suspension
FR2463037A1 (fr) * 1979-08-07 1981-02-20 Siliani Pier Procede et dispositif pour detecter des boites d'essieu chaudes independamment de facteurs ambiants et variables
US4467950A (en) * 1981-08-27 1984-08-28 Flakt Ab Arrangement for pulling the tail of a web-like material through a drying or cooling plant
US5249373A (en) * 1991-01-29 1993-10-05 W. R. Grace & Co.-Conn. Web threading system
EP1033338A2 (fr) * 1999-02-26 2000-09-06 Voith Sulzer Papiertechnik Patent GmbH Machine pour production et/ou traitment d' une bande de matériau
EP1198989A1 (fr) * 2000-10-17 2002-04-24 Rheon Automatic Machinery Co., Ltd. Dispositif de transport
CN103375982A (zh) * 2012-11-23 2013-10-30 无锡众望四维科技有限公司 干燥机的中框架结构

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FR2432462A1 (fr) * 1978-08-01 1980-02-29 Air Ind Perfectionnements apportes aux installations pour le traitement en milieu gazeux d'un produit en bande
US4901740A (en) * 1982-12-27 1990-02-20 Korber Ag Apparatus for threading webs in cigarette rod making machines and the like
IT1178613B (it) * 1983-11-24 1987-09-09 Hauni Werke Koerber & Co Kg Dispositivo cambia bobine
CH668223A5 (de) * 1986-01-28 1988-12-15 Lonza Werke Gmbh Vorrichtung und verfahren zum trocknen von loesungsmittelhaltigen folien oder filmen aus kunststoff.
IT1191341B (it) * 1986-02-28 1988-03-16 Gd Spa Dispositivo guidanastro particolarmente per una macchina confezionatrice di sigarette
DE3722345A1 (de) * 1987-07-07 1989-01-26 Pagendarm Beschichtungstechnik Vorrichtung zum einziehen des anfangs einer materialbahn in eine behandlungsanlage
GB2287242A (en) * 1994-03-11 1995-09-13 Bretting C G Mfg Co Inc Threading webs through web-transport machines.
DE9415859U1 (de) * 1994-09-30 1994-11-24 Vits Maschinenbau GmbH, 40764 Langenfeld Vorrichtung zum Einziehen einer Warenbahn in mindestens eine Behandlungsstation
DE202014100203U1 (de) * 2014-01-20 2015-04-21 Krones Ag Einführeinrichtung für Etikettenbänder

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US2844345A (en) * 1955-03-10 1958-07-22 Harley B Sherman Tripods and clamps therefor
US2994133A (en) * 1954-09-17 1961-08-01 Ind Ovens Inc Web heat treatment and apparatus therefor
US3508342A (en) * 1968-04-04 1970-04-28 Midland Ross Corp Threading apparatus for web dryers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2994133A (en) * 1954-09-17 1961-08-01 Ind Ovens Inc Web heat treatment and apparatus therefor
US2844345A (en) * 1955-03-10 1958-07-22 Harley B Sherman Tripods and clamps therefor
US3508342A (en) * 1968-04-04 1970-04-28 Midland Ross Corp Threading apparatus for web dryers

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2457457A1 (fr) * 1979-05-19 1980-12-19 Vits Maschinenbau Gmbh Dispositif de relevage d'une bande de feuille dans un sechoir de suspension
US4309830A (en) * 1979-05-19 1982-01-12 Vits Maschinenbau Gmbh Apparatus for threading a float web dryer
FR2463037A1 (fr) * 1979-08-07 1981-02-20 Siliani Pier Procede et dispositif pour detecter des boites d'essieu chaudes independamment de facteurs ambiants et variables
US4467950A (en) * 1981-08-27 1984-08-28 Flakt Ab Arrangement for pulling the tail of a web-like material through a drying or cooling plant
US5249373A (en) * 1991-01-29 1993-10-05 W. R. Grace & Co.-Conn. Web threading system
EP1033338A2 (fr) * 1999-02-26 2000-09-06 Voith Sulzer Papiertechnik Patent GmbH Machine pour production et/ou traitment d' une bande de matériau
EP1033338A3 (fr) * 1999-02-26 2002-01-16 Voith Paper Patent GmbH Machine pour production et/ou traitment d' une bande de matériau
EP1198989A1 (fr) * 2000-10-17 2002-04-24 Rheon Automatic Machinery Co., Ltd. Dispositif de transport
CN103375982A (zh) * 2012-11-23 2013-10-30 无锡众望四维科技有限公司 干燥机的中框架结构

Also Published As

Publication number Publication date
FI49850B (fr) 1975-06-30
SE364087B (fr) 1974-02-11
DE6943999U (de) 1974-01-10
ES374100A1 (es) 1971-12-16
DE1956935C3 (de) 1980-06-19
FR1598722A (fr) 1970-07-06
GB1240790A (en) 1971-07-28
SU406382A3 (fr) 1973-11-05
DE1956935A1 (de) 1970-08-27
FI49850C (fi) 1980-03-17

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