EP0594016B1 - Procédé pour tranférer un liquide d'un solide à un autre solide et dispositif pour réaliser ce procédé - Google Patents

Procédé pour tranférer un liquide d'un solide à un autre solide et dispositif pour réaliser ce procédé Download PDF

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Publication number
EP0594016B1
EP0594016B1 EP93116390A EP93116390A EP0594016B1 EP 0594016 B1 EP0594016 B1 EP 0594016B1 EP 93116390 A EP93116390 A EP 93116390A EP 93116390 A EP93116390 A EP 93116390A EP 0594016 B1 EP0594016 B1 EP 0594016B1
Authority
EP
European Patent Office
Prior art keywords
liquid
feeding roller
indentations
solid
dimensionally stable
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.)
Expired - Lifetime
Application number
EP93116390A
Other languages
German (de)
English (en)
Other versions
EP0594016A1 (fr
Inventor
Johannes Dipl.-Ing. Hicker
Erwin Johnen
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.)
Felix Boettcher GmbH and Co KG
Original Assignee
Felix Bottcher & Co KG GmbH
Felix Boettcher GmbH and Co KG
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 Felix Bottcher & Co KG GmbH, Felix Boettcher GmbH and Co KG filed Critical Felix Bottcher & Co KG GmbH
Publication of EP0594016A1 publication Critical patent/EP0594016A1/fr
Application granted granted Critical
Publication of EP0594016B1 publication Critical patent/EP0594016B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N7/00—Shells for rollers of printing machines
    • B41N7/06—Shells for rollers of printing machines for inking rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/26—Construction of inking rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/06—Details
    • B41F9/061—Inking devices
    • B41F9/063—Using inking rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42C—BOOKBINDING
    • B42C9/00—Applying glue or adhesive peculiar to bookbinding
    • B42C9/0006—Applying glue or adhesive peculiar to bookbinding by applying adhesive to a stack of sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/02—Top layers

Definitions

  • the present invention relates to a method for transferring liquid media from a pre-wash roller to a second solid, which has a surface structure, and a pre-wash roller for carrying out this method.
  • Brushes and paint brushes are usually used to apply liquid media to solids.
  • other roller-shaped bodies are also used to transfer liquid media, in particular printing inks, to the printing rollers, for example so-called rinsing rollers in the gravure printing process.
  • the liquid printing medium usually printing ink
  • the so-called gravure cylinder contains surface structures such as "cups" that are filled with the printing ink in question. If the ink is transferred to the rotogravure cylinder by the pre-wash roller in the gravure printing process, plush-related rollers or rubberized rollers with a groove profile grinded in the circumferential direction are used for this.
  • the printing ink is drawn into the plush cover and excess ink is then brought into the wells by rolling on the gravure cylinder.
  • the situation is similar with the rubber rollers, which have profiles in the direction of rotation. Ink is transported on the gravure cylinder in the grooves of the profile.
  • the disadvantage is more serious that plush-related rollers slip through the liquid pressure in front of the nip. This does not guarantee an even rinsing.
  • cleaning and re-covering the rollers with plush covers is relatively complex.
  • the groove profile can overlay the printed image so that the groove profile can be reproduced in the printed products.
  • DE 37 06 011 A1 discloses a short inking unit in which the ink to be transferred on a plate cylinder can be controlled in accordance with the respective ink requirement by using an anilox roller with a compressible carrier layer.
  • the deformation of the well depth of the carrier layer causes a change in volume and thus a change in the amount of paint to be transferred.
  • the inking unit is used in the so-called anilox process in flexographic printing or in letterpress printing.
  • GB-PS 729 561 relates to improvements in printing processes by using a roller with a stochastic surface, which is intended to prevent the formation of an over pattern by superimposing two uniform patterns. Rinse rollers for gravure printing are not mentioned.
  • JP 2066050 A relates to a roller with a rubber layer on a solid metal core. Vulcanized nitrile rubber grains are evenly embedded with one part on the surface of the roller. This creates a roller that gives an irregular surface.
  • EP 0 367 193 A2 relates to a multi-color printing press and method.
  • a large number of printing ink rollers with the rollers described therein make it possible for the printing ink to be transferred cleanly and for the prints to have good properties.
  • the rollers used have surfaces that have a closed-cell structure.
  • the object on which the invention is based is to provide a method and to create a device which avoids the disadvantages of the prior art mentioned at the outset and enables better transfer of a liquid medium from a feed roller to the gravure cylinder.
  • Claim 2 relates to a device for carrying out the method according to the invention, the following subclaims representing preferred embodiments of the device according to the invention.
  • the method according to the invention for transferring liquid media in a feed roller to a gravure cylinder advantageously uses the effects that result from the stochastic surface structure of the feed roller that transfers the liquid medium to the gravure cylinder.
  • Sufficient liquid medium is brought to the intaglio cylinder through the recesses in the surface of the feed roller with a roughness depth> 20 ⁇ m, so that it is adequately wetted with liquid medium.
  • Due to the elastic behavior of the surface of the feed roller the profile of the feed roller formed by the depressions is compressed in the gap between the feed roller and gravure cylinder. This creates a hydrostatic pressure in this gap, since the washed-on liquid medium is pressed outwards.
  • the hydrostatic pressure pushes the liquid medium into the depressions of the gravure cylinder.
  • the prerequisite here is that the total volume of the depressions in the rotogravure cylinder is less than that of the pre-wash roller. Then can so much liquid is transferred that all wells are filled.
  • the indentation in the profiles of the pre-wash roller always brings sufficient amounts of printing ink to the gravure cylinder, so that a forced filling of the cups of the gravure cylinder is ensured.
  • the upstanding profile parts of the feed roller ensure sufficient frictional entrainment behavior of the feed roller through the gravure cylinder.
  • the elastic behavior of the elastic but dimensionally stable surface ensures that the profile is compressed in the nip. This creates a hydrostatic pressure in the nip, as the washed-up ink is pressed outwards.
  • the printing ink is pressed into the well by the hydrostatic pressure. It has an advantageous effect that residual ink which has remained in the well and has not been transferred to the print template is rinsed out.
  • the pre-wash roller can be easily cleaned with appropriate solvents.
  • the device according to the invention which is particularly suitable for carrying out the method according to the invention, either consists entirely of a resilient but dimensionally stable material or at least consists of a surface layer made of a resilient but dimensionally stable material.
  • This material has depressions in the surface which form an irregular, random (stochastic) pattern and have a roughness depth R z > 20 ⁇ m.
  • the R z value is defined in accordance with DIN 4768.
  • the device according to the invention forms a cylindrical body such as a single-layer or multi-layer roller or sleeve. At least the outermost layer of the cylindrical body is formed from the resilient but dimensionally stable material.
  • elastomeric materials such as poly-urethanes, synthetic and natural-based gums, block copolymers and the like have proven themselves as surface materials.
  • elastomeric materials come into consideration such as polyacrylate rubber (short name according to ASTM D-1418-79 ACM), chloropolyethylene rubber (CM), chlorosulphonyl polyethylene rubber (CSM), ethylene propylene diene rubber (EPDM) , Ethylene-propylene rubber (EPM) and fluorine rubber (FKM).
  • polyacrylate rubber short name according to ASTM D-1418-79 ACM
  • CM chloropolyethylene rubber
  • CSM chlorosulphonyl polyethylene rubber
  • EPDM ethylene propylene diene rubber
  • EPM Ethylene-propylene rubber
  • FKM fluorine rubber
  • rubbers of the so-called M group with saturated carbon main chains those of the so-called O group with oxygen in the main chain, such as epichlorohydrin rubber (CO), epichlorohydrin copolymer rubber (ECO) and propylene oxide copolymer rubber ( GPO); rubbers of the so-called R group which have an unsaturated hydrocarbon chain, such as butadiene rubber (BR), chloroprene rubber (CR), isobutene-isoprene rubber (IIR), bromobutyl rubber (BIIR), chlorobutyl rubber, are also suitable (CIIR), isoprene rubber (IR), nitrile butadiene rubber (NBR), natural rubber (NR) and styrene butadiene rubber (SBR).
  • BR butadiene rubber
  • CR chloroprene rubber
  • IIR isobutene-isoprene rubber
  • BIIR bromobutyl rubber
  • chlorobutyl rubber are also suitable (CIIR), is
  • types of rubber of the so-called Q group are considered which have silicone in the main chain. These are fluoro-silicone rubber (FVMQ), methyl-phenyl-silicone rubber (PMQ), methyl-phenyl-vinyl-silicone rubber (PVMQ), methyl-silicone rubber (MQ) and methyl-vinyl-silicone Rubber (VMQ);
  • FVMQ fluoro-silicone rubber
  • PMQ methyl-phenyl-silicone rubber
  • PVMQ methyl-phenyl-vinyl-silicone rubber
  • MQ methyl-silicone rubber
  • VMQ methyl-vinyl-silicone Rubber
  • U group of rubbers which have carbon, oxygen and nitrogen in the main chain, come into consideration, such as polyester urethanes (AU) and polyether urethanes (EU).
  • the thickness of this layer is greater than the roughness depth.
  • the surface structures form an irregular random (stochastic) pattern.
  • Surface structures can be differentiated with regard to the size of the depressions and elevations and with regard to their arrangement on the surface. Closed profiles are used when the elevations are not interrupted in the sense of contour lines are while talking about open profiles when the surveys are generally interrupted by deepening. It has been found that closed profile structures are better suited for the transfer of liquids with a low surface tension, whereas open fine profiles are more favorable for liquids with a higher surface tension. Closed profile structures also build up the pressure for transferring the liquid medium into the second solid better, since the liquid medium cannot easily escape from the grooves. On the other hand, there is a better entrainment effect of the liquid medium with open groove structures.
  • the receptivity of the surface of the device according to the invention with the stochastic surface structure is advantageously approximately twice the volume of the medium ultimately to be transferred.
  • the absorption capacity of the surface is preferably at least 10 ml / m 2.
  • the wash-up roller according to the invention is clad with an elastic coating (rubber or plastic) which is so thick that the elastic properties of the material, which ensures the flexible evasion of the fabric against pressure load from the employment against a harder body, can be used.
  • the surface of the wash-on roller is structured in such a way that a certain amount of the liquid medium to be transferred can be carried in the depressions of the surface of the wash-on roller.
  • the raised parts in the surface structure of the wash-up roller according to the invention are preferably dimensioned such that they cannot penetrate into the recesses in the structure of the gravure cylinder in order not to squeeze out the cells of the gravure cylinder.
  • the pitch of the rinsing roller according to the invention and the gravure cylinder to each other is chosen so that the elastic surface of the rinsing roller according to the invention dodges flexibly and the contact gap between the rinsing roller and the gravure cylinder is widened.
  • the medium Due to the evasion of the elastic coating in the contact gap, especially the relatively small raised elements of the surface structure of the rinse roller according to the invention, the medium is forced into the depressions in the surface structure of the gravure cylinder.
  • the entrained liquid medium experiences an increase in the hydrostatic pressure compared to the normal state.
  • the liquid medium to be transferred is forced into the depressions in the surface structure of the gravure cylinder.
  • the amount of the liquid medium to be transferred can be adjusted by the choice of the surface condition, in particular the absorption capacity of the surface of the rinse roller according to the invention.
  • the structure in the surface of the wash-on roller according to the invention ensures that the gravure cylinder carries it non-positively.
  • Figures 1 to 3 show different surface patterns of the wash-on roller according to the invention.
  • 1 shows a rough profile with a profile depth of 0.5 to 1.0 mm as a closed stochastic surface pattern.
  • FIGS. 2 and 3 show open grain patterns as an open stochastic surface structure.
  • the open grain grid shown in FIG. 2 shows a finer structure than that in FIG. 3.
  • the surface structure of the wash-on roller according to the invention is preferably produced by means of laser-optical processes.
  • a template having a stochastic pattern is transferred to the surface of the wash-on roller according to the invention by marking with a laser beam.
  • the outer surface can be provided with a stochastic surface in order to then be joined together with other parts to form the wash-on roller according to the invention.
  • the feeder roller according to the invention When using the feeder roller according to the invention in the printing industry, the following criteria have been found to be positive: in the light area, the amount of missing dots that occur is smaller compared to feeder rollers with a regular surface structure; the use of the wash-on rollers leads to a higher ink density (layer thickness of the paint measured by reflection) of the print, which is up to 20% higher than when used without the wash-on profile according to the invention; the feed rollers according to the invention can be used in printing units with or without electrostatic pressure support. Furthermore, the lower tendency to spray of the wash-on roller provided with the surface according to the invention and the higher printing speeds achievable thereby have an advantageous effect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Methods (AREA)
  • Ink Jet (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Decoration By Transfer Pictures (AREA)
  • Coating Apparatus (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Printing Plates And Materials Therefor (AREA)

Claims (6)

  1. Procédé pour transférer, sur un cylindre d'héliogravure, au moyen d'un tambour déposeur des milieux liquides, qui présente une structure superficielle comportant des renfoncements,
       procédé selon lequel le tambour déposeur présente une surface flexible, mais de forme stable,
       caractérisé en ce que le milieu liquide est transporté tout d'abord dans des renfoncements de la surface du tambour déposeur qui a une profondeur de rugosité supérieure à 20 µm, ces renfoncements formant un réseau irrégulier aléatoire, c'est-à-dire stochastique,
       et ensuite la surface flexible, mais de forme stable, du tambour déposeur est déformée par la pression résultant du contact avec le cylindre d'héliogravure de telle façon que le milieu liquide est transféré, depuis les renfoncements répartis de façon stochastique du tambour déposeur, dans les renfoncements de la surface du cylindre d'héliogravure, par l'action de la pression qui est liée à cette déformation.
  2. Mécanisme encreur pour une machine d'héliogravure comportant un cylindre d'héliogravure et un tambour déposeur pour la mise en oeuvre du procédé selon la revendication 1,
       dans lequel le tambour déposeur est constitué en totalité par un matériau flexible mais de forme stable, ou comporte un tel matériau au niveau de sa surface,
       caractérisé en ce que le tambour déposeur comporte des renfoncements disposés selon des réseaux, et que les renfoncements situés dans la surface du tambour déposeur forment un réseau irrégulier aléatoire, c'est-à-dire stochastique, avec une profondeur de rugosité Rz > 20 µm, et en particulier Rz > 50 µm.
  3. Mécanisme encreur selon la revendication 2, caractérisé en ce que le tambour déposeur forme un corps cylindrique, qui est réalisé en totalité par un matériau flexible mais de forme stable, ou dont la surface est réalisée en un matériau flexible mais de forme stable, et dont l'épaisseur est supérieure à la profondeur de rugosité des renfoncements.
  4. Mécanisme encreur selon la revendication 3, caractérisé en ce que le corps cylindrique est un cylindre ou une douille constitué d'une ou de plusieurs couches.
  5. Mécanisme encreur selon au moins l'une des revendications 2 à 4, caractérisé en ce que la surface flexible de forme stable est constituée par des matériaux élastiques tels que des matières plastiques élastomères, et des caoutchoucs des groupes M, O, R, Q et U.
  6. Mécanisme encreur selon au moins l'une des revendications 2 à 5, caractérisé en ce que la structure superficielle est constituée par un réseau ouvert ou fermé, à distribution stochastique des renfoncements.
EP93116390A 1992-10-22 1993-10-09 Procédé pour tranférer un liquide d'un solide à un autre solide et dispositif pour réaliser ce procédé Expired - Lifetime EP0594016B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4235586 1992-10-22
DE4235586A DE4235586C2 (de) 1992-10-22 1992-10-22 Verfahren zur Übertragung flüssiger Medien von einer Anspülwalze auf einen Tiefdruckzylinder sowie Vorrichtung zur Durchführung des Verfahrens

Publications (2)

Publication Number Publication Date
EP0594016A1 EP0594016A1 (fr) 1994-04-27
EP0594016B1 true EP0594016B1 (fr) 1996-01-17

Family

ID=6471030

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93116390A Expired - Lifetime EP0594016B1 (fr) 1992-10-22 1993-10-09 Procédé pour tranférer un liquide d'un solide à un autre solide et dispositif pour réaliser ce procédé

Country Status (4)

Country Link
EP (1) EP0594016B1 (fr)
AT (1) ATE133109T1 (fr)
DE (1) DE4235586C2 (fr)
ES (1) ES2083813T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008009699A1 (fr) 2006-07-19 2008-01-24 Felix Böttcher Gmbh & Co. Kg Rouleau pelliculeur avec gravure laser stochastique
US20090241789A1 (en) * 2006-08-10 2009-10-01 Barbara Baecker Rubber rollers with rough surface

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060194054A1 (en) * 2003-04-11 2006-08-31 Treofan Germany Gmbh & Company Co. Biaxially oriented polypropylene film with cold sealing adhesive
DE102006015481B4 (de) * 2006-01-04 2009-07-09 Koenig & Bauer Aktiengesellschaft Walze einer Druckmaschine
DE102007011630A1 (de) * 2007-03-09 2008-09-11 OCé PRINTING SYSTEMS GMBH Vorrichtung zum Auftragen eines Fluids auf einen Bedruckstoff

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973395C (de) * 1948-11-04 1960-02-11 Wilhelm Wolk Anleimmaschine fuer Vorsatzblaetter eines Buchblocks mit Vorleimvorrichtung fuer die auf den Vorsatzblaettern liegenden Laengsraender des Gazestreifens des Buchrueckens
GB729561A (en) * 1952-05-19 1955-05-11 Strachan & Henshaw Ltd Improvements in or relating to inking rolls of rotary printing presses
GB802509A (en) * 1954-08-31 1958-10-08 Lewis Berger & Sons Ltd Improvements in or relating to multiple roller paint applicators
US2957412A (en) * 1956-12-19 1960-10-25 James A Rainey Stippling roller for paints
US3910186A (en) * 1973-10-15 1975-10-07 American Bank Note Co Ink supply apparatus for intaglio printing press
US4197338A (en) * 1977-12-19 1980-04-08 Anthony Perna Dry wall-board surface finishing
DE8611707U1 (de) * 1986-04-29 1986-07-31 Vereinigte Buchbindereimaschinenfabriken GmbH, 6970 Lauda-Königshofen Vorrichtung zum Beleimen von Buchblockrücken
DE3706011A1 (de) * 1987-02-25 1988-09-08 Roland Man Druckmasch Kurzfarbwerk
US4913050A (en) * 1987-09-30 1990-04-03 Porelon, Inc. Self-metering gravity fed ink dispensing roller
JP2730917B2 (ja) * 1988-09-01 1998-03-25 株式会社金陽社 ロール及びその製造方法
JP2616901B2 (ja) * 1988-11-01 1997-06-04 株式会社 東京機械製作所 多色刷用輪転印刷機

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008009699A1 (fr) 2006-07-19 2008-01-24 Felix Böttcher Gmbh & Co. Kg Rouleau pelliculeur avec gravure laser stochastique
US20090241789A1 (en) * 2006-08-10 2009-10-01 Barbara Baecker Rubber rollers with rough surface
US9266375B2 (en) * 2006-08-10 2016-02-23 Felix Boettcher Gmbh & Co. Kg Rubber rollers with rough surface

Also Published As

Publication number Publication date
EP0594016A1 (fr) 1994-04-27
ES2083813T3 (es) 1996-04-16
ATE133109T1 (de) 1996-02-15
DE4235586A1 (de) 1994-04-28
DE4235586C2 (de) 1998-08-20

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