EP1927476A1 - Rakelkammer mit mindestens zwei Kammern, die unterschiedliche Flüssigkeiten enthalten - Google Patents

Rakelkammer mit mindestens zwei Kammern, die unterschiedliche Flüssigkeiten enthalten Download PDF

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Publication number
EP1927476A1
EP1927476A1 EP07291389A EP07291389A EP1927476A1 EP 1927476 A1 EP1927476 A1 EP 1927476A1 EP 07291389 A EP07291389 A EP 07291389A EP 07291389 A EP07291389 A EP 07291389A EP 1927476 A1 EP1927476 A1 EP 1927476A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
vis
housing
partition
chamber
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.)
Ceased
Application number
EP07291389A
Other languages
English (en)
French (fr)
Inventor
Hervé Walgenwitz
Gilles Cattacin
Yoann Denis
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.)
Essity Operations France SAS
Original Assignee
Georgia Pacific France SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Georgia Pacific France SAS filed Critical Georgia Pacific France SAS
Publication of EP1927476A1 publication Critical patent/EP1927476A1/de
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/027—Ink rail devices for inking ink rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus 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
    • B05C1/04—Apparatus 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
    • B05C1/08—Apparatus 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
    • B05C1/0813—Apparatus 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 characterised by means for supplying liquid or other fluent material to the roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/18—Inking arrangements or devices for inking selected parts of printing formes

Definitions

  • the present invention relates to a doctor blade chamber for a machine for printing or application of liquid or viscous fluids in which the doctor blade chamber cooperates with a screen cylinder (also called "anilox") which cooperates itself with a complementary cylinder , transferring, printing or applying fluids to a surface.
  • a screen cylinder also called "anilox”
  • the invention is particularly applicable in the field of the application and / or coating of essentially liquid substrates on absorbent products, in particular based on cellulose wadding.
  • Examples of embodiments of multi-compartment doctor blade chambers are known, particularly in the field of printing according to the technique known as "flexography" and in the field of sizing.
  • the presence of the intermediate partition has practically no influence on the deposit on the final product of the two different adjacent fluids contained in the two compartments separated by the partition and in particular so that there is no separation or overlap between the two adjacent coating areas.
  • a doctor blade chamber 10 which is essentially constituted by a housing, 12 which is of generally parallelepipedal rectangle and longitudinal orientation, having a front vertical face open.
  • the housing 12 is delimited by a vertical and longitudinal rear wall 14, as well as by two horizontal and longitudinal upper walls 16 and lower 18 respectively.
  • the doctor blade chamber 10 is able to cooperate sealingly with a complementary cylinder 20 delimited by a outer convex cylindrical surface 22, which is for example a screened cylinder or "anilox".
  • the outer surface of such a cylinder usually has an array of cells for transferring a fluid from one cavity to another cylinder or to the surface to be treated.
  • the axis A of the cylinder 20 is of horizontal orientation.
  • the housing 12 delimits an internal cavity 13 which is able to contain a liquid or viscous fluid, in cooperation with the outer surface 22 of the cylinder 20.
  • the sealing of the housing 20 is ensured by means of two end devices axial sealing 24 each of which comprises in particular a concave sealing surface 26 adapted to cooperate with a portion vis-à-vis the surface 22 of the cylinder 20.
  • the housing 12 is also equipped, in known manner, an upper squeegee 28 and a lower squeegee 30. In practice, only the lower squeegee is necessary.
  • Each squeegee 28, 30, also called doctor blade or doctor blade is, in known manner, made for example of metal or elastically deformable synthetic material.
  • Each doctor blade 28, 30 cooperates with its free end longitudinal edge before sealingly with a longitudinal portion vis-à-vis the surface 22 of the cylinder 20.
  • the housing 12 of the doctor blade chamber 10 comprises a single cavity or internal compartment 13 which is therefore able to contain only one liquid or viscous fluid which is introduced into the housing for example by a supply line 32; the housing 12 is also provided for example with two pipes 34 discharge.
  • the level of the fluid contained in the cavity 13 is provided by any suitable means, and for example by positioning the discharge pipe 34 at the top so that the excess full evacuates permanently by this pipe whose position determines the upper level of the fluid contained in the cavity 13 of the housing 12.
  • the cavity 13 is here divided longitudinally into two separate compartments 13A and 13B by a vertical intermediate sealing partition 40, providing a bi-directional seal function.
  • the intermediate dividing partition 40 is here made in the form of a constant thickness plate, which is for example made by cutting into a plate of suitable material which will be defined further.
  • the peripheral contour of the partition 40 essentially consists of a rear portion 42 whose geometric profile is complementary to the inner profile of the housing 12 and the doctor blades 28 and 30, and a front portion 44 which is able to cooperate sealingly with a convex surface portion 22 of the cylinder 20 facing it.
  • the front portion 44 is thus in the form of a concave cylinder arc of generally vertical orientation whose concave surface 46 is here smooth.
  • the surface 46 is able to cooperate with the convex surface 22 of a cylinder 20, for example anilox cylinder, without any modification of such a standard cylinder.
  • the partition 40 which is here of thickness "e", constant is delimited by two opposite lateral faces of vertical orientation 48A and 48B.
  • the partition 40 is made by cutting into a plate of resiliently deformable cellular material so as to give it both sufficient rigidity and elasticity, in particular for its sealing engagement with the surface 22 of the cylinder 20 and also so as to allow mounting of the plate slightly compressed in its vertical plane, inside the housing 12 of the doctor chamber 10.
  • the intermediate partition 40 is preferably made of a closed-cell polyolefin foam plate.
  • the material constituting the partition, or at least the portion (or leading edge) 46 is for example the reference material XA 1000 ALVEOLUX sold by the company SEKISUI ALVEO.
  • the physical characteristics of this material are as follows: Physical characteristics ISO Unit XA 1000 Density 845 Kg / m 3 100 Tensile strength 1926 kpa 1350 Elongation 1926 % 175 Compressive strength 844 10% compression kpa 125 compression 25% kpa 165 50% compression kpa 275 Resistance to compression 1856-C 22 h load at 23 ° C compression 25% 1 ⁇ 2 h after discharge % 5 24 hours after discharge % 2 Thermal conductivity 2581 at 10 ° C W / mK 0053 at 40 ° C W / mK 0054 Operating temperature Internal ° C -80 / + 80 Water absorption (7 days) Internal Flight.% ⁇ 1.5 Permeability to water vapor 1663 g / m 2 x24h - ⁇ value (23 ° C, 0-85% rh) 1663 -
  • the rear portion 42 of the contour of the partition 40 must perfectly match the inner surface of the housing 12 and the surface portions vis-à-vis the squeegees 28 and 30, as well as the portion before 46 must conform to the portion facing the convex cylinder arc surface 22 of the cylinder 20.
  • the dimensions of the contour 42, 44 of the partition are such that they are oversized (for example by 4%) so that the partition 40 is mounted and cooperates with the cylinder 20, in permanent compression in its vertical plane.
  • the oversizing may be different from the aforementioned value.
  • the axial thickness "e" of the front portion 44, and therefore here of the entire partition 40 is less than 7 mm and is preferably between 3 and 7 mm . A satisfactory seal is possible if the thickness "e" is greater than 3 mm.
  • each compartment 13A, 13B of course includes its own conduits 32A, 34A 32B, 34B supplying the associated compartment and discharging the liquid or viscous fluid that it contains.
  • the intermediate partition 40 is fixed and held longitudinally inside the housing 12 in the cavity 13 by fasteners 50A, 50B which constitute a "clamp" which cooperates with the portions vis-à-vis the opposite side faces 48A and 48B of the partition 40.
  • the teachings of the invention are applicable irrespective of the nature and composition of the fluids, also called substrates, contained in each compartment, whether it be for example a glue, an ink, an a lotion, etc ...
  • the partition 40 can in particular be made by superposition of several layers or plates of suitable materials.
  • a chamber with doctor blades can of course also be equipped with several intermediate partitions, or bi-directional joints, according to the invention in order to delimit a plurality of longitudinally adjacent and longitudinally separated compartments, each compartment being fed and drained by a specific circuit. associated supply and discharge fluid.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP07291389A 2006-11-27 2007-11-23 Rakelkammer mit mindestens zwei Kammern, die unterschiedliche Flüssigkeiten enthalten Ceased EP1927476A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0655116A FR2909032B1 (fr) 2006-11-27 2006-11-27 Chambre a racles a au moins deux compartiments contenant des fluides differents.

Publications (1)

Publication Number Publication Date
EP1927476A1 true EP1927476A1 (de) 2008-06-04

Family

ID=38110179

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07291389A Ceased EP1927476A1 (de) 2006-11-27 2007-11-23 Rakelkammer mit mindestens zwei Kammern, die unterschiedliche Flüssigkeiten enthalten

Country Status (2)

Country Link
EP (1) EP1927476A1 (de)
FR (1) FR2909032B1 (de)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293686A1 (de) 1987-06-03 1988-12-07 Dpu Deutsche Projekt Union Gmbh Verfahren zum Verfüllen von bergmännisch hergestellten Hohlräumen und Vorrichtung zur Durchführung eines entsprechenden Verfahrens
WO1989007047A1 (en) * 1988-02-01 1989-08-10 Tresu A/S Doctor blade chamber device
US5012736A (en) 1987-09-21 1991-05-07 Paper Converting Machine Company Sealing assembly for liquid fountain
US5150651A (en) 1991-06-10 1992-09-29 Flores Carlos R Doctor-blade assembly for flexographic press
GB2263438A (en) * 1992-01-22 1993-07-28 Langston Corp Printing apparatus.
US5662042A (en) * 1996-06-10 1997-09-02 Paper Converting Machine Co. Method of operating ink unit for printing press
FR2792249A1 (fr) * 1999-04-19 2000-10-20 Fort James France Dispositif d'etancheite d'extremite pour chambre a racle
EP1493552A1 (de) 2003-07-01 2005-01-05 Delicarta SPA Verfahren und Vorrichtung zum Prägen von Folienmaterial und gravierte Walze dafür

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293686A1 (de) 1987-06-03 1988-12-07 Dpu Deutsche Projekt Union Gmbh Verfahren zum Verfüllen von bergmännisch hergestellten Hohlräumen und Vorrichtung zur Durchführung eines entsprechenden Verfahrens
US5012736A (en) 1987-09-21 1991-05-07 Paper Converting Machine Company Sealing assembly for liquid fountain
WO1989007047A1 (en) * 1988-02-01 1989-08-10 Tresu A/S Doctor blade chamber device
US5150651A (en) 1991-06-10 1992-09-29 Flores Carlos R Doctor-blade assembly for flexographic press
GB2263438A (en) * 1992-01-22 1993-07-28 Langston Corp Printing apparatus.
US5662042A (en) * 1996-06-10 1997-09-02 Paper Converting Machine Co. Method of operating ink unit for printing press
FR2792249A1 (fr) * 1999-04-19 2000-10-20 Fort James France Dispositif d'etancheite d'extremite pour chambre a racle
EP1493552A1 (de) 2003-07-01 2005-01-05 Delicarta SPA Verfahren und Vorrichtung zum Prägen von Folienmaterial und gravierte Walze dafür

Also Published As

Publication number Publication date
FR2909032B1 (fr) 2011-04-29
FR2909032A1 (fr) 2008-05-30

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