WO2001068269A1 - Device for coating a material web, especially paper or cardboard web - Google Patents

Device for coating a material web, especially paper or cardboard web Download PDF

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Publication number
WO2001068269A1
WO2001068269A1 PCT/EP2001/002420 EP0102420W WO0168269A1 WO 2001068269 A1 WO2001068269 A1 WO 2001068269A1 EP 0102420 W EP0102420 W EP 0102420W WO 0168269 A1 WO0168269 A1 WO 0168269A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
press
characterized
web
press rolls
rolls
Prior art date
Application number
PCT/EP2001/002420
Other languages
German (de)
French (fr)
Inventor
Ingo Becker
Alexander Klupp
Original Assignee
Voith Paper Patent Gmbh
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

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/04Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B05C1/083Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets being passed between the coating roller and one or more backing rollers
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22Addition to the formed paper
    • D21H23/52Addition to the formed paper by contacting paper with a device carrying the material
    • D21H23/56Rolls

Abstract

According to prior art, devices for coating paper or cardboard webs (8) are provided with two press rollers (2, 3) which are mounted in parallel to the axis and next to one another in a frame (4). One press roller (3) can be peripherally pressed against the remaining press roller (2) by means of a control element (5) for forming a press gap (7). The web (8) is guided through said gap. At least one press roller (2, 3) contains an application and dosing system (10, 11) that applies a dosed film of a coating material to the casing of the press roller (2, 3). Said film is subsequently transmitted to the web (8) in the press gap (7). According to the invention, a pressure spring (13, 14) is arranged between the two press rollers (2, 3). Said spring produces a counterforce in the press gap (7). Said counterforce presses the press rollers (2, 3) away from one another.

Description

DESCRIPTION

Apparatus for coating a material web, especially a paper or board web

technical field

The invention relates to an apparatus for coating a material web, especially a paper or board web, having two axially juxtaposed in a frame press rolls, of which one press roll is circumferentially andruckbar by means of an actuating element against the other press roll to form a press nip, through the the material web is guided, and with a flood and metering system for at least one press roll

State of the art

For two-sided application of glue, starch, CMC, synthetic glue or pigment dispersions to paper or cardboard webs are devices having two axially parallel next to each other in a frame rotatably mounted pressing rolls known, between which a nip is formed through which the paper or cardboard web is guided from DE-a 44 31 202 is a so-called film press is known in which a flood and dosing system is arranged on each press roller, the first auftragt a metered film of coating material on the sheath, which is then passed into the press nip to the path a of two press rolls is mounted pivotably in the frame against the other and can be pressed by means of a piston-Zyiinder- unit as an actuating element circumferentially against the other press roll

Film presses are also used to emphasize paper or cardboard webs with pigment coating, so evenly apply a covering layer on the surface when applying coating color must be taken to ensure that not too much color as it passes through the press nip in the web is in printed It is therefore endeavors to set a lowest possible line pressure between the two press rolls it has been found that a desired line pressure close to 0 N / m can not be realized because the attached waved press roll gerat if there is insufficient pressure in the hydraulic or pneumatic actuator in an unstable state the nip between the two press rolls is unstable with adverse effects on the Qualltat the coated web

Summary of the Invention

The invention is therefore based on the object to improve a Beschichtungsvorπchtung the gattungsgemaßen type so that a low line pressure can be set in the press nip between two press rolls

This object is achieved according to the invention characterized in that a compression spring is disposed between the two press rolls which produces a press rolls apart printed counterforce in the press nip

The reaction force allows sufficient for a stable operation of the apparatus the pressure in anpressenden hydraulic or pneumatic actuator to build and also to adjust the line pressure in the press nip is very low

As a further advantage occurs added that the outer compression spring Storeinflusse compensated on the geometry of the press nip, in particular thermal influences, largely

preferred contain the dependent claims, as particularly advantageous embodiments of an inventive Beschichtungsvornchtung

Brief Description of Drawing

The drawing serves to explain the invention simplifies the basis of an exemplary embodiment shown

1 shows, in side view, an overall view of a film press

Figure 2 shows a schematic diagram of the arrangement and action of the compression spring between the press rolls 3 shows a side view of a section of a device in which the counter-force is adjustable

Ways of carrying out the invention

The Beschichtungsvornchtung shown in Figure 1 is in a paper machine integrates consists of two axially parallel next to each other in a frame 1 rotatably mounted pressing rolls 2, 3, of which one press roll 2 stationary, the other press roll is mounted pressed against 3 circumferentially against the first pressure roller 2, the movable press roll 3 is between suspended two lateral pivoting levers 4, which are mounted about a pivot axis 6 in the direction of the pressure roller 2 and away from pivotally in the frame 1 by means of a hydraulic piston-cylinder unit as the adjusting element 5 by means of the adjusting element 5 let so the press roll 3 circumferentially against the pressure roller 2 Print Alternatively, a pneumatic piston-cylinder unit can be used as an actuator 5 Similarly, a Pneumatikbalg without piston may be used as an adjusting member 5, as shown in Figure 2 forms when swiveled the press roller 3 against the pressure roller 2 a press nip 7, which the to- beschichtene paper web 8 is fed by a guide roller 9 from above, the two press rolls 2, rubberized on its mantle surface 3 are preferred

In the embodiment illustrated in the drawing, apparatus for coating both sides of the nip 7 the coating material is fed on the inlet side of the web 8 on both sides of the web by is outside the area of ​​the press nip 7 at each press roll 2, 3, a flood and metering system 10, 11, the to the respective press roll 2, 3 be pivoted Preferably, each flood and metering system 10, 11 open to the respective pressure roller 2, 3 towards order chamber, is fed into the coating material under pressure outlet side, each deposition chamber is terminated by a metering element which comprises on the pressure roller 2, 3 applied coating material until the desired film thickness strips as metering element a bar coater having a structured so used surveys and well-tasting surface with which can be volumetπsch metered metering rods are preferably used with Umfangsπllen is preferred the metered onto the Mantelflä chen of the press rolls 2, 3 applied coating material is passed to the web 8 in the press nip. 7 After passing through the press nip 7, the double coated web 8 is supplied from a non-contact guide member 12 to a drier not shown.

The line pressure between the two press rolls 2, 3 is adjusted via the hydraulic or pneumatic pressure in the actuator 5 which can be varied over a proportional valve. In order to ensure proper function of the device, a minimum pressure in the adjusting element 5 is required. This minimum pressure is a line pressure between the two press rolls 2, 3 is too large of surface coatings with pigment coating because too much color would pressed into the paper or board web. 8

Thus, the line pressure can be reduced in the press nip 7 below the minimum pressure for the adjusting element 5, is provided between the two press rolls 2, 3 at least a compression spring 13, 14 is arranged which generates in the press nip 7, a press rollers 2, 3 apart pressing counterforce. two springs 13, 14 between the bearing housings 15, 16 of the press rolls 2, 3 are preferably arranged to be held by a spacer bolt 17 to an adjustable distance on each longitudinal side of the device. The spacer bolt 17 transmits the pressing force of the adjusting element 5 against the force of the springs 13, 14 to the bearing housings 15, 16 and thus on the Preßwaizen 2.3.

The springs 13, 14 are so designed that they have a substantially constant spring constant, so that the reaction force increases linearly with the distance from each of the two reduction press rolls 2; 3. In the embodiment of Figures 2 and 3, the springs 13, 14 are designed as located on the respective bearing housing 15, 16 supporting the leaf springs. They have a spring travel which is sufficient to build up such a large back pressure in conjunction with the spring constant that at the required minimum pressure of the control element 5 of the line pressure between the press rolls 2, 3 to zero can be adjusted.

Preferably, the length of the spacer pin 17 is variable, so that the basic position can be adjusted, in which the counter force of the springs 13, 14 is effective. As shown in Figure 3, the spacer 17 has bolt on one side of a joint ball, which is mounted in an externally attached to the spring 14 socket joint 18th On the opposite end of the bolt 17, a sleeve 19 is screwed, whose axial position can be adjusted relative to the bolt 17th The ball-cup-shaped end of the sleeve 19 is also mounted in a socket which is attached to the outside of the second spring. 13 This construction allows in addition to the change in the effective length of the bolt 17 is a pivotal movement of the bolt 17 relative to the bearing housings 15, 16 so that the pressing roller is not affected Anschwenkbewegung 3 against the press roll. 2 Thus, the spacer bolt 17 does not buckle at downstroke of the press roll 3, it is held in the socket 18 by a clamping ring 20 in position. By removing the clamping ring 20 of the spacer bolt can be removed complete with the screwed sleeve 19, 17 if the device is to be operated without the action of the springs 13, 14th

the effective length of the spacer bolt 17 is in front of the first-time operation of the device and after each Waizenwechsel first as a basic setting set so that the distance to each other have the pressure roller 2, 3 in the required for the actuator minimum pressure 5 0 millimeters. The required for optimum coating line pressure between the press rolls 2, 3 is then adjusted by increasing the pressure in the adjusting element. 5 The pressure of the actuating element 5 is varied so that the two press rolls 2,3 have on each longitudinal side at the same distance from one another and the line force over the entire axial length of the two press rolls 2, 3 is uniform.

Claims

Ü patent claims CHE
1.
Apparatus for coating a material web (8), especially a paper or
Board web,
- mounted with two axially parallel next to one another in a frame (4) press rolls (2, 3), of which one press roll (3) by means of an actuating element (5) against the other press roller (2) is circumferentially pressed to form a press nip (7) to form, by which the material web (8) is guided, and
- with a flood and metering system (10, 11) for at least one press roll (2, 3),
characterized in that between the two press rolls (2, 3) a pressure spring (13, 14) is arranged in the press nip (7), the press rolls (2, 3) apart produces urging counterforce.
Second
Device according to claim 1, characterized in that the spring (13, 14) on the longitudinal side of the device between the bearing housings (15, 16) of the press rolls (2, 3) is arranged.
Third
transmitting apparatus according to claim 1 or 2, characterized in that a spacer bolt (17) with variable length, the pressing force of the adjusting element (5) against the force of the spring (13, 14) to the press rolls (2, 3).
4th
Device according to claim 3, characterized in that the spacer bolt (17) is articulated at its ends.
5th
support apparatus of claim 3 or 4, characterized in that the spacer bolts (17) between two springs (13, 14) is arranged in each case on a bearing housing (15, 16) of a press roll (2, 3).
6th
Device according to one of claims 1 to 5, characterized in that the
is adjusting element (5), a hydraulic piston-cylinder unit or a Pheumatikbalg.
PCT/EP2001/002420 2000-03-15 2001-03-03 Device for coating a material web, especially paper or cardboard web WO2001068269A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE10012465.8 2000-03-15
DE2000112465 DE10012465A1 (en) 2000-03-15 2000-03-15 Assembly for coating the surfaces of a paper/cardboard web at the papermaking machine has a setting unit to act on the press rollers against their springs to give a low linear pressure in the press gap

Publications (1)

Publication Number Publication Date
WO2001068269A1 true true WO2001068269A1 (en) 2001-09-20

Family

ID=7634725

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/002420 WO2001068269A1 (en) 2000-03-15 2001-03-03 Device for coating a material web, especially paper or cardboard web

Country Status (2)

Country Link
DE (1) DE10012465A1 (en)
WO (1) WO2001068269A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1954568A1 (en) 2005-11-25 2008-08-13 Focke & Co. (GmbH & Co. KG) Method of, and apparatus for, producing blanks for an inner wrapper of a cigarette group
US7648678B2 (en) 2002-12-20 2010-01-19 Dako Denmark A/S Method and system for pretreatment of tissue slides
CN100591426C (en) 2008-03-28 2010-02-24 北京星和众工设备技术股份有限公司 Roller coater

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700620A (en) * 1949-12-06 1955-01-25 Gen Motors Corp Roller machine and method for impregnating web material
US3805738A (en) * 1970-11-04 1974-04-23 N Kitazawa Oiling device for metal sheet
DE4431202A1 (en) 1994-09-02 1996-03-07 Jagenberg Papiertech Gmbh Apparatus for coating both sides of a web of material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700620A (en) * 1949-12-06 1955-01-25 Gen Motors Corp Roller machine and method for impregnating web material
US3805738A (en) * 1970-11-04 1974-04-23 N Kitazawa Oiling device for metal sheet
DE4431202A1 (en) 1994-09-02 1996-03-07 Jagenberg Papiertech Gmbh Apparatus for coating both sides of a web of material

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9778273B2 (en) 2002-12-20 2017-10-03 Dako Denmark A/S Isolated communication sample processing system and methods of biological slide processing
US7648678B2 (en) 2002-12-20 2010-01-19 Dako Denmark A/S Method and system for pretreatment of tissue slides
US9599630B2 (en) 2002-12-20 2017-03-21 Dako Denmark A/S Method and apparatus for automatic staining of tissue samples
US7758809B2 (en) 2002-12-20 2010-07-20 Dako Cytomation Denmark A/S Method and system for pretreatment of tissue slides
US7937228B2 (en) 2002-12-20 2011-05-03 Dako Denmark A/S Information notification sample processing system and methods of biological slide processing
US7960178B2 (en) 2002-12-20 2011-06-14 Dako Denmark A/S Enhanced scheduling sample processing system and methods of biological slide processing
US8216512B2 (en) 2002-12-20 2012-07-10 Dako Denmark A/S Apparatus for automated processing biological samples
US8257968B2 (en) 2002-12-20 2012-09-04 Dako Denmark A/S Method and apparatus for automatic staining of tissue samples
US8298815B2 (en) 2002-12-20 2012-10-30 Dako Denmark A/S Systems and methods of sample processing and temperature control
US8386195B2 (en) 2002-12-20 2013-02-26 Dako Denmark A/S Information notification sample processing system and methods of biological slide processing
US8394635B2 (en) 2002-12-20 2013-03-12 Dako Denmark A/S Enhanced scheduling sample processing system and methods of biological slide processing
US8529836B2 (en) 2002-12-20 2013-09-10 Dako Denmark A/S Apparatus for automated processing biological samples
US8663978B2 (en) 2002-12-20 2014-03-04 Dako Denmark A/S Method and apparatus for automatic staining of tissue samples
US8673642B2 (en) 2002-12-20 2014-03-18 Dako Denmark A/S Enhanced scheduling sample processing system and methods of biological slide processing
US8784735B2 (en) 2002-12-20 2014-07-22 Dako Denmark A/S Apparatus for automated processing biological samples
US8788217B2 (en) 2002-12-20 2014-07-22 Dako Denmark A/S Information notification sample processing system and methods of biological slide processing
US8969086B2 (en) 2002-12-20 2015-03-03 Dako Denmark A/S Enhanced scheduling sample processing system and methods of biological slide processing
US9229016B2 (en) 2002-12-20 2016-01-05 Dako Denmark A/S Information notification sample processing system and methods of biological slide processing
EP3088308A1 (en) * 2005-11-25 2016-11-02 Focke & Co. (GmbH & Co. KG) Method and device for producing blanks for an inner wrapper of a cigarette group
EP1954568A1 (en) 2005-11-25 2008-08-13 Focke & Co. (GmbH & Co. KG) Method of, and apparatus for, producing blanks for an inner wrapper of a cigarette group
CN100591426C (en) 2008-03-28 2010-02-24 北京星和众工设备技术股份有限公司 Roller coater

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