EP2416964A1 - Rollen-rotations-offsetdruckmaschine mit mindestens einem lackierwerk mit kammerrakel und rasterwalze - Google Patents
Rollen-rotations-offsetdruckmaschine mit mindestens einem lackierwerk mit kammerrakel und rasterwalzeInfo
- Publication number
- EP2416964A1 EP2416964A1 EP10711229A EP10711229A EP2416964A1 EP 2416964 A1 EP2416964 A1 EP 2416964A1 EP 10711229 A EP10711229 A EP 10711229A EP 10711229 A EP10711229 A EP 10711229A EP 2416964 A1 EP2416964 A1 EP 2416964A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- rotary
- machine according
- printing
- printing machine
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/08—Print finishing devices, e.g. for glossing prints
-
- 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
Definitions
- the invention relates to a rotary-rotary offset printing machine with at least one coating unit and at least one printing unit according to the preamble of claim 1 or the preamble of claim 2.
- paint systems are known, for example those which contain a catalyst which triggers a crosslinking reaction of the substances contained in the paint.
- This catalyst can be activated, for example, by means of UV or electron irradiation.
- Other methods require a dryer that uses infrared radiation or hot air to dry the paint.
- the drying of such "heatset coatings” is therefore analogous for drying "heatset inks", which likewise require a dryer in which, for example, the excess liquid components of the ink are vaporized by means of hot air Since the printing material web is heated up, a device which cools the printing substrate web is usually required in addition.
- the use of such paints thus requires a relatively high expenditure on equipment.
- a printing machine which does not use “heatset inks” and therefore does not include a “heatset dryer” and no cooling device.
- An optional printing unit for applying a seal in this printing machine is followed by either an IR, a UV or an electron beam dryer, which may be provided with a thermal doctor blade. An applied amount of paint is not specified.
- WO 2007/087531 A2 discloses a process in which a web-shaped printing material printed in the "coldset" process is coated on both sides with a water-based lacquer in a short time, which dries by repelling the liquid portion of the lacquer in the printing material The coating process does not undergo corrugation and both smearing of the printing ink from the printing substrate and sticking together of the printed products are avoided.As an important parameter for the formation of these properties, the applied coating composition is specified per surface area of the printing material.
- DE 102 06 601 discloses a coating unit of a printing machine, which comprises a, a water-based paint-containing pan and an anilox roller, wherein the anilox roller has a plurality of, together forming a scoop volume, recesses in its outer surface and wherein the coating unit along a transport path of a , processed by the printing press and the coating unit, printing material, is arranged according to a printing unit of the printing press, wherein, along the transport path of the printing material, after the coating unit, apart from guide rollers or others, a Direction of transport of the substrate changing devices, as the next device a folder and / or a cutting device is arranged acting on the substrate.
- An applied lacquer layer is dried by means of a drying device.
- EP 0 930 161 B1 discloses a coating unit of a rotary rotary offset printing machine, which comprises at least one chambered doctor blade containing a water-based paint and at least one anilox roller, wherein at least one anilox roller has a multiplicity of depressions in its lateral surface forming a pumping volume and wherein the coating plant, along a transport path of, by the rotary-rotary offset printing machine and the coating unit processed, substrate, is arranged according to a printing unit of the rotary-rotary offset printing machine, wherein, along the transport path of the printing material, after the coating unit, apart from Guiding rollers or other, a transport direction of the printing material changing devices, as a next device, a folding device and / or a cutting device is arranged on the printing material acting. It is essential that an application of the paint is performed in opposite directions of the anilox roller with respect to the printed substrate.
- the invention has for its object to provide rotary-rotary offset printing machine with at least one coating unit and at least one printing unit.
- the advantages which can be achieved with the invention are, in particular, that the printed products treated with the coating unit have a multiplicity of the advantages which can typically be achieved by means of coating installations, in comparison to unpainted printed products, such as gloss and contrast improvement and greatly reduced Lubrication and high-quality paper, although the coating is also relatively simple and requires no downstream dryer. Thus, by using cheaper paper, costs can be reduced.
- Another advantage is that, by means of an arrangement of rollers forming a painting nip, such that a point containing one of its axes of rotation and a roller associated with the other axis of rotation and within a volume of the roller associated with that other axis of rotation is in a plane inclined at less than 45 ° to the horizontal an arrangement of the coating unit at a particularly favorable location within a printing press, in particular on a printing unit and / or a printing tower is made possible without complicating a web guide and / or so that unnecessarily many guide rollers before painting with a printed image in Come in contact.
- Another advantage is that the relatively small footprint retrofit existing printing presses is possible. For example, that can Lackierwerk be inserted into the superstructure of a printing press. The space required is also low, because no dryer is arranged, a distance between the printing unit and coating unit is relatively small and the coating unit is relatively simple and compact
- Another advantage is the elimination of volatile organic compounds and other, such as environmentally hazardous substances, such as may occur in paints that need to be dried by means of UV radiation. There is thus no special waste.
- the paint arranged in the coating unit is a water-based lacquer which dries so fast, for example, by striking that the coating unit can be arranged in a roll rotary offset printing machine, without a transport speed of a printing material being smaller. than the usual with this printing unit without active coating unit transport speed of the printing substrate of about 12 - 15 m / s.
- this printing unit without active coating unit transport speed of the printing substrate of about 12 - 15 m / s.
- Another advantage is that is prevented by a storability of a standing in contact with an at least partially coated side of the printing material in that at a standstill of the substrate, especially in an emergency shutdown of the coating and / or the printing press, the substrate at the corresponding Stick roller.
- a direction of a corresponding Abstell Gay is chosen so that it can be achieved by a simple construction as possible, so for example, a linear movement and / or pivotal movement with components exclusively in directions perpendicular to axes of rotation of components of the coating.
- Another advantage is that, in conjunction with a previous printing of a substrate by means of a printing unit exclusively with dry offset colors, a particularly fast repelling of the liquid portions of the disposed paint occurs, whereby reductions in the printing material web speed can be further avoided. This advantage arises from the fact that the substrate has not come into contact with water-containing material until the application of the paint and thus still has a very high absorbency.
- Another advantage is that, in connection with a previous print with "coldset colors", no drying device is required for the entire production process of the printed products, whereby dryer-related disadvantages, such as a too low moisture content of the printing material, can be avoided in the manufacturing process.
- Another advantage is that it can be ensured by own drives to the anilox rollers that a transferred amount of paint exactly meets the requirements and not too much or too little paint is transferred. This is further promoted by the existing between all rollers rolling contacts.
- Another advantage is that the paint shop, if it is divisible, is more accessible for maintenance and other occasions and in the case of co-operating with the coating unit, divisible printing unit can be shared with this together, resulting in, for example, maintenance of coating unit and printing unit further simplify.
- the coating unit can be designed in various configurations, for example, with few rollers to save costs, or with many rollers, for example, flexographic printing rollers or rollers for double-sided coating order to further increase a Lackiertown.
- Example 2 shows a schematic representation of a printing material and a coating unit a) or two coating units b) as described in Example 2, each containing a chamber doctor blade, an anilox roller and a counter-pressure roller;
- Fig. 3 is a schematic representation of a substrate and a coating unit a) or two coating units b) as described in Example 3, each containing a chambered doctor blade, an anilox roller and an applicator roller;
- Fig. 6 are schematic representations of different configurations a) and b) of a variably adjustable coating unit as described in Example 6;
- Figure 7 is a schematic representation of a printing unit and a coating unit, both the printing unit, as well as the coating unit are divisible and each part of the printing unit and a part of the coating unit are rigidly connected together.
- Fig. 8 is a schematic representation of a printing unit and a coating unit, wherein the printing unit is divisible and a rigidly connected to a part of the printing unit coating unit is not divisible;
- Fig. 9 is a schematic representation of a variably adjustable printing unit, with the configurations similar to those or the same as in Fig. 6 can be generated.
- a coating unit 01 of a printing machine preferably that of a rotary rotary offset printing machine, preferably comprises at least one roller 02 formed as an anilox roller 02, to which at least one chambered doctor blade 03 is set, so that the chambered doctor blade 03 in its interior with its closing blade, its working doctor blade, two lateral boundaries, a housing and a part of a lateral surface of the anilox roller 02 forms a closed volume.
- At least one supply line and one discharge line exist through which paint can be pumped into and out of the volume.
- the supply line, the discharge, the chambered doctor blade 03 and the pumping device with other devices, such as a reservoir, a closed system in which the paint is under a pressure which is higher than an atmospheric pressure.
- the anilox roller 02 has its own drive motor, via which it is driven and which is preferably connected to the machine control.
- the anilox roller 02 is thus mechanically independent of other anilox rollers 02 or driven by other drive motors of the printing press.
- An outer surface of the anilox roller 02 is preferably made of a ceramic material, which may include, for example, alumina (Al 2 O 2 ) and / or titanium dioxide (TiO 2 ) and / or zirconium dioxide (ZrO 2 ).
- An engraving in the form of a plurality of depressions is introduced into the lateral surface, preferably by means of a production process which comprises a laser bombardment of the lateral surface of the anilox roller 02 as a step.
- the depressions can be arranged, for example, in a regular point-like structure, a line structure or a stochastic structure. Lines of such a line pattern are also called Haschuren.
- a regular-dot-shaped structure is a structure in which individual depressions are located on points of a regular grid.
- a density of the lines is 40 to 130 lines per cm. If the coating unit 01 is designed such that a printing substrate 06, for example a printing material web 06, rests directly against the anilox roller 02 during the coating operation, the density of the lines is preferably 90 to 130 lines per cm and more preferably 100 to 120 lines per cm. If the coating unit 01 is designed in such a way that no printing material 06 is applied directly to the anilox roller 02 during the coating operation, the density of the lines is preferably 40 to 80 lines per cm and more preferably 50 to 70 lines per cm.
- a width and a depth of the individual lines determine predetermined density of lines a total paint volume that can accommodate the anilox 02 in their wells, a so-called Schöpfvolumen.
- the scoop volume depends on a desired amount of paint that is to be transferred from the anilox roller 02.
- the scoop volume of the anilox roller 02 is designed so that the paint film transferred to a printing material 06 in the dried state has a surface-related mass of at most 4 g / m 2 and preferably of at most 2 g / m 2 .
- the anilox roller 02 takes on paint by coming through the rotation of the anilox roller 02, the wells in contact with the arranged in the interior of the chambered doctor blade 03 paint and so filled. Excess paint is stripped in the further rotation of the anilox roller 02 of the working doctor blade and only arranged in the wells paint passes out of the interior of the chambered doctor blade 03.
- the part of the lateral surface of the anilox roller 02 comes into contact with the printing substrate 06 or another constituent of the coating unit 01, which may be a roller 07 formed as an applicator roller 07, and transfers lacquer to the Printing material 06 or this other component of the coating 01.
- the paint is preferably applied to a substrate 06, which has already been printed with color.
- the color processed by the printing press may be color for the printer conventional offset printing or preferably dry offset ink and it is preferably already at least partially dried before the paint is applied. Due to the better water absorption capabilities of the printing material 06, which has not come in contact with water before a paint job, the use of dry offset inks is preferred.
- substrate 06 for example, paper comes into question. Uncoated and coated paper grades can be used and lighter paper grades typical for coldset printing with a basis weight of up to 50 g / m 2 or rather heatset printing paper grades with a weight per unit area of more than 40 are used g / m 2 in question.
- the water content of the paint in the substrate 06 is low-paper or uncoated paper to be preferred, for example, with a coating weight of less than 10 g / m 2 . If, as preferred, coldset inks are used, it is preferred to use paper that achieves desirable results with these inks.
- the arranged in the volume inside the chambered doctor blade 03 is characterized by various properties. He is a dispersion varnish, so a water-based paint.
- the paint dries on the substrate 06 mainly by knocking. This means that water and other possibly contained liquid constituents of the paint are absorbed by the printing substrate 06 and solid constituents of the paint remain on a surface of the printing material 06.
- the paint is such that such a drying process happens relatively quickly, and so fast that the paint, which is located on the substrate 06, dries after his order before the substrate 06 with its painted spot a next contact to another component a printing machine containing the coating 01 has.
- the coating unit 01 is arranged along a transport path of the processed from the printing press and the coating unit 01 substrate 06 after a printing unit 1 1.
- the printing substrate 06 is transported at an equal speed by the printing press when the coating unit 01 is set up as without an applied coating unit 01, namely at 10 to 17 m / s and preferably at 12 to 15 m / s, without the undried lacquer after it was applied to the substrate 06, with something other than the substrate 06 and the surrounding air comes into contact.
- a dryer is not necessary for this drying process.
- a roller 12 of the printing unit 1 1 (Whereby a roller 12 in this context, a cylinder 12 should be referred to.) And a roller 02; 07; 09 of the coating unit 01, which may be an anilox roller 02 or an applicator roller 07, no dryer arranged. Further preferably, no dryer is arranged along the transport path of the printing substrate 06 between the printing unit 1 1 and a folding apparatus and / or a cutting device and even more preferably no dryer is arranged in the printing machine.
- the coating unit 01 follows along the transport path of the printing material 06, apart from, guide rollers or other devices that serve a change in direction of the transport path, directly a former or a folder, a cutting device or other component of the printing press, in and / or of the printing material 06 and / or on or in the printing substrate 06 located inks and / or paints and / or constituents of these paints and / or paints only mechanically, but in no way chemically or by the action of electromagnetic radiation or electron beams or changes in temperatures, be treated. Under a cutting device is also a perforating to understand.
- a smallest dimension between a contacting the substrate 06 roller 12 of the printing unit 1 1 and a paint-transferring roller 02; 07; 09 of the coating unit 01 along the transport path of the printing material 06 is less than 4 m and more preferably less than 2 m.
- the varnish arranged inside the chambered doctor blade 03 may be, for example, a gloss varnish, a matt varnish or a milky varnish, it may also produce a metallic and / or a glitter effect and / or it may be a fragrance varnish containing fragrances in tiny capsules contains, which are released for example during friction.
- the rotary-rotary offset printing machine comprises at least one machine section, each machine section comprises at least one printing unit and each printing unit comprises at least one printing unit 1 1.
- each printing unit comprises four printing units 1 1, which are designed as double offset printing units 1 1, ie in particular two forme cylinder 14 and two standing with the form of cylinders 14 in contact, mutually serving as a counter-pressure cylinder 12 transfer cylinder 12th
- the coating unit 01 may be constructed so that substrate 06 during the painting process vertically or horizontally or obliquely, ie with vertical and horizontal directional components, is transported.
- the printing material 06 is transported in one direction through the coating unit 01 whose vertical component is larger, as its horizontal component, and more preferably, the printing substrate 06 is transported exclusively vertically through the coating unit 01, since there are advantages in connection with a vertical web guide in the printing unit 11 working together with the coating device 01.
- At least one pair of two rollers 02; 07; 08; 09 is arranged, which together form a Lackierspalt through which is transported in a painting of the printing material 06, these two rollers 02; 07; 08; 09 is arranged such that a first plane including a horizontal plane includes an angle of less than 45 °, and more preferably less than 30 °, and more preferably between 1 ° and 20 °.
- the first plane is set such that it has an axis of rotation of one of these two rollers 02; 07; 08; 09 includes and that it is a point of a rotation axis of the other of these two rollers 02; 07; 08; 09, which is within one of the other of these two rollers 02; 07; 08; 09 fixed volume.
- the coating unit 01 is preferably arranged directly on a printing unit or in a superstructure of a printing press.
- the coating unit 01 is arranged so that at least one axis of rotation of an anilox roller 09 of the coating 01 is arranged further above, as all axes of rotation of cylinders 14 and other cylinders 12 and rollers 12 in a the coating unit 01 with respect to a transport direction of the printing material 06 upstream printing unit are arranged.
- the coating unit 01 may also comprise further components, for example the one or more application rollers 07 and / or one or more rollers 08 designed as counter-pressure rollers 08.
- the peripheral speed of the anilox rollers 02 and / or Application rollers 07 and / or counter-pressure rollers 08 preferably equal to the speed at which the printing substrate 06 is transported in the printing operation by the printing press and in particular by the coating unit 01.
- the direction of rotation of the anilox rollers 02 and / or applicator rollers 07 and / or counterpressure rollers 08 ensures that only rolling contacts between anilox rollers 02 and / or applicator rollers 07 and / or counterpressure rollers 08 and the printing substrate 06 are possible.
- This series of embodiments is not exhaustive, other embodiments are also conceivable.
- Embodiment 1 "direct, with looping"
- the printing substrate 06 is in printing operation in direct contact with the anilox roller 02.
- the paint is thus transferred from the wells in the lateral surface of the anilox roller 02 directly to the substrate 06.
- the transferred from the individual wells paint points are still slightly after their transfer and connect with each other, so that at the desired locations on the substrate 06 a continuous paint surface is achieved.
- a relatively finely screened screen roller 02 is used, which means that in the case of a line structure, the density of the lines is preferably between 90 and 130 lines per cm.
- the printing material 06 is pressed by a looping to the anilox roller 02, ie the substrate 06 touches the anilox roller 02 not only on a line parallel to a rotation axis of the anilox roller 02, but the substrate 06 touches the anilox roller 02 flat by a piece along a circumference of the anilox roller 02 is carried.
- the proportion of the lateral surface of the anilox roller 02, which is in contact with the printing substrate 06 at a time, depends on the angle that the transported to the anilox roller 02 and the transported away from the anilox roller 02 substrate 06 include. This angle also affects the force with which the printing material 06 is pressed against the anilox roller 02. It is also possible to arrange two coating units 01 (FIG.
- the printing material 06 is first performed in the painting operation with its one side on the anilox roller 02 of a coating unit 01 and provided with paint, then the other side of the printing material 06 is guided along the anilox roller 02 of the other coating unit 01 and provided with paint.
- a contact force is generated by the wrapping of the printing substrate 06 to the respective anilox roller 02, whereby the paint from the wells of the anilox roller 02 is transferred out to the substrate 06.
- a location of the printing substrate 06 is not simultaneously painted from both sides in the painting, but between the application of the paint on one side of the printing material 06 and the application of the paint on the other side of the printing material 06 passes a time difference .DELTA.t, which depends on the speed at which the printing substrate 06 is transported and the distance between the anilox rollers 02 from one another.
- Exemplary embodiment 2 "direct, with back pressure"
- the printing substrate 06 is, as in the embodiment 1, provided directly from the anilox roller 02 with paint.
- the anilox roller 02 is formed as in Embodiment 1 and the transfer of the paint is the same as in Example 1, also here run the transferred paint dots still at the desired locations on the substrate 06 to a continuous paint surface.
- a counter-pressure roller 08 presses the printing substrate 06 against the anilox roller 02 in order to achieve a better contact between the anilox roller 02 and printing material 06 and thereby to improve the transfer of the paint from the depressions of the anilox roller 02 to the printing substrate 06.
- the counter-pressure roller 08 is preferably formed on its lateral surface of a relatively soft material to ensure that the substrate 06 is pressed against the anilox roller 02 and the transfer of the paint is improved on the substrate 06.
- the lateral surface of the counterpressure roller 08 has a Shore A hardness between 30 and 70, more preferably, the lateral surface of the counterpressure roller 08 has a Shore A hardness of 60.
- the material of the lateral surface of the counter-pressure roller 08 may be, for example, rubber or polyurethane.
- FIG. 2 b It is also possible to mount two coating units 01 of this embodiment (FIG. 2 b)), so that one coating unit 01 lacquers a first side of the printing material 06 and the other coating unit 01 lacquers a second side of the printing material 06.
- the printing material 06 is first performed with its one side of the anilox roller 02 of a coating unit 01 and provided by the contact pressure of a platen roller 08 with paint, then the other side of the substrate 06 to the anilox 02 of the other coating unit 01 along guided and provided by the contact pressure of a counter-pressure roller 08 with paint.
- Embodiment 3 "with application roller, with looping" This embodiment can also be seen in Fig. 3 a).
- the anilox roller 02 is next to the chambered doctor blade 03 also with an applicator roller 07 in contact.
- the application roller 07 is in turn in rolling contact with the printing material 06. Since the printing material 06 is not in direct contact with the anilox roller 02, in the case of a linear structure of the depressions in the lateral surface of the anilox roller 02, the density of the lines is preferably in the range of 40 to 80 lines per cm.
- the printing material 06 wraps around the applicator roller 07, so that the contact between applicator roller 07 and substrate 06 is not formed as a line, but as a surface and a contact pressure between the substrate 06 and application roller 07 is generated.
- Paint is transferred from the interior of the chamber doctor blade 03 via the anilox roller 02 to the applicator roller 07 and from there to the printing substrate 06.
- the applicator roller 07 is preferably formed on its lateral surface of a relatively soft material to ensure that the paint is effectively transferred from the wells of the applicator roller 07 in contact with anilox roller 02 on the lateral surface of the applicator roller 07.
- the lateral surface of the applicator roller 07 has a Shore A hardness between 30 and 70, more preferably, the lateral surface of the applicator roller 07 has a Shore A hardness of 60 on.
- the material of the lateral surface of the applicator roller 07 may be for example rubber or polyurethane.
- the applicator roller 07 may also be formed as a Spotlackierwalze so that it can be carried out with a spot-painting.
- the application roller 07 is designed in size so that its circumference is equal to the circumference of a transfer cylinder 12 in a printing unit 1 1 of the printing press.
- the applicator roller 07 is such that only certain, selectively selectable parts of the lateral surface of the applicator roll 07 accept paint and thus can transfer. In this way it is ensured that for each printed portion of the printing substrate 06, for example, per printed side of a printed product, always an equal part of the Section painted or not painted.
- the application rollers 07 do not press from both sides against the same location of the printing substrate 06, a location of the printing substrate 06 is painted not simultaneously from both sides in the painting, but between the application of the paint on one side of the printing substrate 06 and the application of the paint on the other side of the printing material 06 passes a time difference .DELTA.t, which depends on the speed at which the printing substrate 06 is transported and the distance between the applicator rollers 07 from each other.
- the application roller 07 of one or both coating units 01 can be designed so that a spot coating can be carried out with it.
- Exemplary embodiment 4 "with application roller, with back pressure"
- the anilox roller 02 is next to the chambered doctor blade 03 also with an applicator roller 07 in contact.
- the application roller 07 is in turn in rolling contact with the printing material 06. Since the printing material 06 is not in direct contact with the anilox roller 02, in the case of a linear structure of the depressions in the lateral surface of the anilox roller 02, the density of the lines is preferably in the range of 40 to 80 lines per cm.
- a Counterpressure roller 08 presses the printing substrate 06 against the applicator roller 07, in order to achieve a better contact between the applicator roller 07 and substrate 06 and thereby to improve the transfer of the paint from the applicator roller 07 to the substrate 06.
- the printing substrate 06 can wrap around the applicator roller 07 and / or the counterpressure roller 08 or can also be guided in a straight line between the applicator roller 07 and the counterpressure roller 08.
- the applicator roller 07 is preferably formed on its lateral surface of a relatively soft material to ensure that the paint is effectively transferred from the wells of the applicator roller 07 in contact with anilox roller 02 on the lateral surface of the applicator roller 07.
- the lateral surface of the application roller 07 preferably has a Shore A hardness of between 30 and 70, more preferably the lateral surface of the application roller 07 has a Shore A hardness of 60.
- the material of the lateral surface of the applicator roller 07 may be for example rubber or polyurethane.
- the material of the lateral surface of the counter-pressure roller 08 is harder than the material of the lateral surface of the applicator roller 07, preferably has a Shore A hardness of more than 70 and may be, for example, Rilsan.
- the application roller 07 can also be designed as a spot-coating roller.
- the applicator roller 07 is such that its circumference is equal to the circumference of a transfer cylinder in a printing unit 1 1 of the printing press.
- the applicator roller 07 is such that only certain, selectively selectable, parts of the lateral surface of the applicator roll 07 accept paint and thus can transfer. In this way, it is ensured that for each printed portion of the printing substrate 06, for example, per printed side of a printed product, always a same part of the section is painted or not painted.
- the printing material 06 is first performed in the paint shop with its one side on the applicator roller 07 of a coating unit 01 along and provided with paint in the Following the other side of the printing material 06 is guided along the applicator roller 07 of the other coating unit 01 and provided with paint.
- a contact force In each of the two contacts between an applicator roller 07 and a substrate 06 is produced by the respective counter-pressure roller 08, a contact force, whereby the paint is transferred from the applicator roller 07 to the substrate 06.
- the printing material 06 can each wrap around the applicator roller 07 and / or the counterpressure roller 08 or can also be guided in a straight line between the applicator roller 07 and the counterpressure roller 08. Since the application rollers 07 do not press from both sides against the same location of the printing material 06 in Lackier surveillance a point of the substrate 06 is not painted simultaneously from both sides, but between the application of the paint on one side of the substrate 06 and the application of the paint on the other side of the printing material 06 passes a time difference .DELTA.t, which depends on the speed at which the printing substrate 06 is transported and the distance of the applicator rollers 07 from one another.
- the application roller 07 of one or both coating units 01 can be designed so that a spot coating can be carried out with it.
- Exemplary embodiment 5 "two-sided, with application roller equal to counter-pressure roller"
- This embodiment can also be seen in Fig. 5 a).
- This embodiment describes the preferred embodiment of the coating 01.
- the entire coating unit 01 comprises at least two chambered doctor blades 03, two anilox rollers 02 and two application rollers 07, which simultaneously serve as counterpressure rollers 08.
- the substrate 06 is in the painting on both sides simultaneously with one application roller 07 in contact and is therefore provided on both sides simultaneously with paint.
- the two applicator rollers 07 each form the counterpressure roller 08 of the other applicator roller 07 in order to achieve a better contact between application roller 07 and substrate 06 and thereby to improve the transfer of the paint from the applicator roller 07 to the substrate 06.
- the printing material 06 can wrap around one or both application rollers 07 or even between the two Mandatory rollers 07 are guided therethrough.
- each application roller 07 is preferably formed on its lateral surface of a relatively soft material to ensure that the paint is effectively transferred from the wells of, with the applicator roller 07 in contact, anilox roller 02 on the lateral surface of the applicator roller 07 becomes.
- the lateral surface of the applicator roller 07 has a Shore A hardness between 30 and 70, more preferably, the lateral surface of the applicator roller 07 has a Shore A hardness of 60 on.
- the material of the lateral surface of the applicator roller 07 may be for example rubber or polyurethane.
- One or both application rollers 07 may also be formed as a spot-coating roller.
- the corresponding applicator roll 07 is sized in such a way that its circumference is equal to the circumference of a transfer cylinder 12 in a printing unit 1 1 of the printing press.
- the applicator roller 07 is such that only certain, selectively selectable, parts of the lateral surface of the applicator roll 07 accept paint and thus can transfer. In this way, it is ensured that for each printed portion of the printing substrate 06, for example, per printed side of a printed product, always a same part of the section is painted or not painted.
- the Spotlackierwalzen be designed as a flexographic printing rollers, it is necessary on each side of the substrate 06 an anilox roller 02, a standing in contact, designed as a flexographic pressure roller applicator roller 07 and simultaneously acting as a transfer roller and roller 08 as a roller 08 to arrange (Fig. 5 b)).
- Exemplary embodiment 6 "flexible coating unit for implementing various arrangements"
- rollers 09 are arranged, which can be used as application rollers 07 and / or as counterpressure rollers 08. These are these rollers 09 mounted so that they are each displaceable perpendicular to a direction of its axis of rotation and there are devices 13 arranged to move these axes of rotation.
- the rollers 09 are preferably mounted such that their axes of rotation can be displaced along a virtual cylinder jacket surface when the rollers 09 are displaced, whose axis of symmetry coincides with an axis of rotation of the anilox roller 02 resting against the corresponding roller 09.
- rollers 09 are always in contact with the corresponding anilox roller 02.
- preferred and optionally additionally arranged devices with which the corresponding roller 09 can be moved independently of this virtual cylinder surface perpendicular to its axis of rotation Such devices may, for example, be of the type disclosed in DE 101 52 021 C2.
- rollers 09 In painting two rollers 09 can be moved so that they are each in contact with an anilox roller 02 and press together from both sides against the guided between them substrate 06. Other rollers 09 are irrelevant. In this way, the Lackierwerkskonfiguration arises as in the embodiment 5 (Fig. 6 b)).
- the one side of the printing substrate 06 is painted by a roller 09, which is used as the application roller 07, while the other side of the printing material
- rollers 09 used as application rollers 07 paint the printing substrate 06 at different locations and do not serve each other as a counterpressure roller 08.
- the result is a coating unit configuration as in exemplary embodiment 3 (FIG. 6 c)).
- one (FIG. 6 d)) or both (FIG. 6 d)) rollers 09 used as applicator roller 07 is a roller 09 which is pressed against the other side of the printing substrate 06 and not in contact with an anilox roller 02, used as a counterpressure roller 08 be assigned.
- a back pressure roller 08 is assigned to both application rollers 07, a coating unit configuration is produced as in exemplary embodiment 4 (FIG. 6 d)).
- a roller 09 used in this case as a counterpressure roller 08 can be a roller 09 which can be used both as a pure counterpressure roller 08 and simultaneously as a counterpressure roller 08 and applicator roller 07. It is also possible with this printing unit 01, all rollers 02; 07; 08; 09 so that only one side of the substrate 06 is painted.
- Each application roller 07 described in this exemplary embodiment preferably has a lateral surface with a Shore A hardness of between 30 and 70, more preferably, the lateral surface of the application roller 07 has a Shore A hardness of 60.
- the material of the lateral surface of the applicator roller 07 may be for example rubber or polyurethane.
- Each application roller 07 described in this embodiment can also be designed as a spot-coating roller.
- the corresponding application roller 07 is designed in size such that its circumference is equal to the circumference of a transfer cylinder 12 in an inking unit of the printing press.
- the applicator roller 07 is such that only certain, selectively selectable, parts of the lateral surface of the applicator roll 07 accept paint and thus can transfer. In this way, it is ensured that for each printed portion of the printing substrate 06, for example, per printed side of a printed product, always a same part of the section is painted or not painted.
- Each roller 09 used exclusively in this exemplary embodiment as a counter-pressure roller 08 preferably has a material on its lateral surface which repels the substance applied to the printing substrate 06 before contact with this counterpressure roller 06, ie either paint or varnish, in order on its side Printing material 06 applied paint or the applied on their side of the substrate 06 paint during the painting process of the other side of the printing material 06 does not smear.
- the coating unit 01 for example, for maintenance, be shared.
- at least one part of the coating unit 01 is preferably displaced, while at least one other part of the coating unit 01 is held in its position or displaced in another direction.
- a division takes place so that such components of the coating 01, such as a chambered doctor blade 03, an anilox roller 02 and any applicator rollers 07 and / or counter-pressure rollers 08 and / or rollers 09 generally touching the painting one side of the printing substrate 06 are arranged or are in contact with such components, are not displaced, while such components of the coating 01, such as a chambered doctor blade 03, an anilox roller 02 and any applicator rollers 07 and / or counter-pressure rollers 08 and / or generally rollers 09, in the painting another side of the printing material 06 are arranged touching or are associated with such components, are moved so that they move away from the unshaded components of the coating 01.
- the coating unit 01 can thus be divided, regardless of whether a substrate 06 is currently in the coating unit 01 or not. Even more preferably, a part of a housing of the coating 01, which is not moved, rigidly connected to a part of a housing of the printing unit 1 1, which is also not displaced, while another part of the housing of the coating 01, which is moved with another part of the housing of the printing unit 1 1 is rigidly connected, which can be moved, for example, for maintenance (Fig. 7). If the coating unit 01 is not designed to be divisible, its housing is preferably rigidly connected to at least part of the housing of the printing unit 11 (FIG. 8). Under a rigid connection is a connection between two parts to understand, although in principle, for example by loosening screws or the like, can be separated, but can not be moved relative to each other in the normal case, and especially in the case of a running operation.
- the coating unit 01 is formed divisible, preferably each with an at least partially painted side of the substrate 06 in contact standing anilox rollers 02 and / or applicator rollers 07 and / or counter-pressure rollers 08 of the coating 01 are placed on the substrate 06.
- an applicator roller 07 and / or a counter-pressure roller 08 is employed on the printing material 06, this can be offset, for example, by a linear and / or curved, for example circular segment-shaped movement, for example about an axis of rotation of an adjacent roller 09 from the printing substrate 06 , Also combinations of such movements are possible.
- an anilox roller 02 is employed directly on the printing material 06
- the Abstellzi takes place in each case preferably in directions exclusively perpendicular to a respective axis of rotation of the printing substrate 06 in contact with the roller 02; 07; 08; 09th
- only one partial web can be painted with the coating unit 01, ie, only one part of the printing material 06, for example half, one third or one fourth, is painted on the direction parallel to the axis of rotation of the anilox roller 02.
- an applicator roller 07 is arranged in the coating unit 01, this can be such that they only on the part of their Extension in the direction parallel to the axis of rotation of the anilox roller 02 record and can transfer paint, which comes into contact with the part of the printing material 06, to be applied to the paint.
- a chambered doctor blade 03 is preferably arranged, which in its extent with respect to the direction parallel to a rotational axis of an adjacent anilox roller 02 is the same size as the area of the printing material 06 to be painted , That is, possibly smaller than an extension of the printing material 06 in the direction perpendicular to the transport direction of the printing material 06, and which is arranged so that in the paint operation paint is ultimately transmitted exclusively to the desired locations of the printing material 06.
- a change in the extent of the applicator roller 07 in the direction of its axis of rotation is conceivable for this purpose.
- this printing material strand can also be painted, ie. H.
- Each Spotlackierwalze may be formed as a flexographic printing roll, in which the selection of the painting areas is determined by a different radius at the appropriate location.
- two spot-coating rollers should preferably not be mutually attached as counter-pressure rollers 08, since occurring different radii on at least one flexographic printing roller can not ensure a constant backpressure over a peripheral surface of the flexographic printing roller.
- the property of whether varnish is transferred or not can be influenced, for example, by the choice of the surface material, for example in the manner in which offset printing is also used.
- the coating unit 01 is at least partially designed as a contactless coating unit 01.
- a contactless coating unit 01 may include, for example, at least one spray device, preferably a spray bar with a plurality of spray devices in a direction perpendicular to a transport direction of the printing substrate 06 and / or parallel to the transport direction of the printing material 06.
- Such spray nozzles are known per se. Via a control or regulation, which is preferably connected to the machine control, the spray nozzles can be switched on and off. This makes it possible to operate the coating unit 01 only optional and make a full-surface coating.
- this also makes it possible to carry out spot varnishes by, for example, each spray nozzle according to a desired coating order with each revolution of a forme cylinder 14 of the printing substrate 06 to be printed printing unit 1 1 performs a specific, preferably identical, spraying.
- a Spraying may be for each spray nozzle individually from a permanent spray operation, a permanent shutdown or a sequence of any number of spraying operations and shutdowns alternately.
- the spray nozzles are individually switched on and off, depending on a desired paint appearance. In particular, on and off operations of different spray nozzles are independent of each other.
- the coating unit 01 forms in all the described embodiments, together with the printing substrate 06, a system consisting of the respective coating unit 01 and the substrate 06 arranged therein.
- a number of rollers 09 between chambered doctor blade 03 and substrate 06 can also be increased if a desired amount of paint transferred should be correspondingly smaller.
- a continuous lacquer surface is preferably achieved in that a lacquer on the printing substrate 06 transmitting lateral surface of a corresponding roller 07; 08; 09 is at least 80% and preferably at least 90% covered with varnish.
- Paint transferring lateral surfaces of rollers 07; 08; 09, which are not an anilox rollers 02, are preferably formed by elevators, the lateral surfaces of these rollers 07; 08; 09 forming arranged.
- Such an elevator can be designed, for example, as a printing blanket, that is to say as coated, dimensionally stable support plates which can have a plurality of layers, for example a layer of a metal forming a base body and a layer of an elastomer of corresponding hardness.
- Such an elevator is on the corresponding cylinder 07; 08; 09 aufziehbar or raised and in corresponding channels of the rollers 07; 08; 09 attachable or attached.
- At least one roller (07, 08, 09) of the coating unit (01) can be arranged or arranged with a lift, which has a same sequence of layers, such as at least one printing unit working in at least one, the same printing material (06) arranged elevator.
- a lift which has a same sequence of layers, such as at least one printing unit working in at least one, the same printing material (06) arranged elevator.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Printing Methods (AREA)
- Coating Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009002228.7A DE102009002228B4 (de) | 2009-04-06 | 2009-04-06 | Lackierwerk einer Rollen-Rotations-Offsetdruckmaschine |
| PCT/EP2010/054077 WO2010127913A1 (de) | 2009-04-06 | 2010-03-29 | Rollen-rotations-offsetdruckmaschine mit mindestens einem lackierwerk mit kammerrakel und rasterwalze |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2416964A1 true EP2416964A1 (de) | 2012-02-15 |
| EP2416964B1 EP2416964B1 (de) | 2018-01-03 |
Family
ID=42320895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10711229.4A Active EP2416964B1 (de) | 2009-04-06 | 2010-03-29 | Rollen-rotations-offsetdruckmaschine und verfahren zur verwendung einer rollen-rotations-offsetdruckmaschine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20120118183A1 (de) |
| EP (1) | EP2416964B1 (de) |
| JP (1) | JP5065539B2 (de) |
| CN (1) | CN102378689B (de) |
| DE (1) | DE102009002228B4 (de) |
| WO (1) | WO2010127913A1 (de) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9248639B2 (en) * | 2011-06-03 | 2016-02-02 | Hewlett-Packard Development Company, L.P. | Imaging device having fluid container and method for collecting carrier fluid |
| JP6112502B2 (ja) * | 2012-10-05 | 2017-04-12 | 株式会社小森コーポレーション | グラビアオフセット印刷機 |
| JP5622947B1 (ja) * | 2013-06-12 | 2014-11-12 | 株式会社金陽社 | フレキソ印刷用版材 |
| CN105283318B (zh) * | 2013-06-12 | 2018-01-23 | 株式会社金阳社 | 柔版印刷用版材 |
| DE102015107168A1 (de) * | 2015-05-07 | 2016-11-10 | Manroland Web Systems Gmbh | Soll-Falzstelle |
| DE102016209031B4 (de) * | 2016-05-24 | 2019-06-13 | Koenig & Bauer Ag | Verfahren zum Betreiben einer Bearbeitungsstufe einer Bogendruckmaschine |
| CN106423643B (zh) * | 2016-08-31 | 2022-04-08 | 浙江中屹纺织机械科技有限公司 | 一种刺皮辊筒自动刷胶包皮装置 |
| DE102017212828A1 (de) | 2017-07-26 | 2019-01-31 | Koenig & Bauer Ag | Vorrichtung zum Beschichten von Nutzen, eine Druckmaschine und Verfahren zum Beschichten von Nutzen |
| DE102017215918B4 (de) | 2017-09-08 | 2024-07-25 | Koenig & Bauer Ag | Verfahren und Vorrichtung zum Beschichten eines Substrates mit einem Fluid sowie Druckmaschine mit einer solchen Vorrichtung |
| TWI720849B (zh) * | 2020-03-17 | 2021-03-01 | 群翊工業股份有限公司 | 濕式滾平設備 |
| KR102335153B1 (ko) * | 2021-09-14 | 2021-12-03 | (주)현대아트컴 | 오프셋 인쇄 장치 |
| DE102023113002A1 (de) | 2023-05-17 | 2024-11-21 | Koenig & Bauer Ag | Bogenbeschichtungseinheit mit zwei Übertragungszylindern und Flexodruckformzylindern sowie eine Bogenbearbeitungsmaschine |
| DE102023113005A1 (de) | 2023-05-17 | 2024-11-21 | Koenig & Bauer Ag | Bogenbeschichtungseinheit mit Lackvorräten und zwei Übertragungszylindern sowie eine Bogenbearbeitungsmaschine |
| DE102023113004A1 (de) | 2023-05-17 | 2024-11-21 | Koenig & Bauer Ag | Bogenbeschichtungseinheit für Lack mit Sammelzylinder und eine Bogenbearbeitungsmaschine |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59192596A (ja) * | 1983-04-18 | 1984-10-31 | Mitsubishi Heavy Ind Ltd | 印刷インキの裏移り防止用コ−ト剤 |
| US4574732A (en) | 1983-05-05 | 1986-03-11 | Feco Engineered Systems, Inc. | Overvarnish unit |
| DE4311834C2 (de) * | 1993-04-08 | 2001-02-01 | Roland Man Druckmasch | Einrichtung zum Beschichten von Bedruckstoffen in Druckmaschinen |
| DE4334803C1 (de) * | 1993-10-13 | 1994-11-03 | Roland Man Druckmasch | Einrichtung zum Dosieren flüssiger Medien in Offsetdruckmaschinen, vorzugsweise für Lackiereinheiten |
| DE59808261D1 (de) * | 1998-01-19 | 2003-06-12 | Mohndruck Graphische Betr E Gm | Verfahren und Vorrichtung zur Beschichtung eines Druckerzeugnisses |
| JP4599680B2 (ja) * | 2000-07-21 | 2010-12-15 | 凸版印刷株式会社 | 光沢性に優れた紙シートの製造方法 |
| DE10152020C2 (de) | 2001-03-20 | 2003-05-08 | Koenig & Bauer Ag | Vorrichtung zum Einstellen des Anpressdrucks einer verstellbar gelagerten Walze |
| DE10206601A1 (de) * | 2001-10-11 | 2003-04-17 | Konrad F Beer | Verfahren bzw. Vorrichtung zur Herstellung einer Sperrschicht auf einem Trägermaterial bzw. Verpackungsmaterial, insbesondere für Lebensmittel, Kosmetika und/oder Pharmazeutika |
| JP3813492B2 (ja) * | 2001-10-31 | 2006-08-23 | トッパン・フォームズ株式会社 | 印刷物の製造方法 |
| DE10207184A1 (de) | 2002-02-21 | 2003-09-04 | Irs Lab Ag Pfaeffikon | Offsetdruckmaschine |
| DE10362054B4 (de) * | 2003-12-22 | 2010-12-30 | Actega Terra Gmbh | Offsetdruckverfahren und Druckerzeugnis |
| DE102005003956B4 (de) * | 2005-01-27 | 2010-07-01 | Lsf Maschinen- Und Anlagenbau Gmbh & Co. Kg | Vorrichtung zum Lackieren einer bedruckten Papierbahn |
| US20070012246A1 (en) * | 2005-07-14 | 2007-01-18 | Hess Max W | Coating applicator apparatus for rotary sheet fed printing presses |
| GB2434332A (en) | 2006-01-24 | 2007-07-25 | Sun Chemical Ltd | Coldset web offset printing |
| DE102006037966A1 (de) * | 2006-08-12 | 2008-02-21 | Man Roland Druckmaschinen Ag | Auftragsvorrichtung für ein Druck-/Lackwerk in einer Verarbeitungsmaschine |
-
2009
- 2009-04-06 DE DE102009002228.7A patent/DE102009002228B4/de active Active
-
2010
- 2010-03-29 WO PCT/EP2010/054077 patent/WO2010127913A1/de not_active Ceased
- 2010-03-29 CN CN201080015085.0A patent/CN102378689B/zh not_active Expired - Fee Related
- 2010-03-29 JP JP2012503956A patent/JP5065539B2/ja not_active Expired - Fee Related
- 2010-03-29 US US13/263,090 patent/US20120118183A1/en not_active Abandoned
- 2010-03-29 EP EP10711229.4A patent/EP2416964B1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010127913A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102378689B (zh) | 2014-05-07 |
| JP2012522667A (ja) | 2012-09-27 |
| DE102009002228B4 (de) | 2015-01-08 |
| US20120118183A1 (en) | 2012-05-17 |
| EP2416964B1 (de) | 2018-01-03 |
| JP5065539B2 (ja) | 2012-11-07 |
| DE102009002228A1 (de) | 2010-10-14 |
| WO2010127913A1 (de) | 2010-11-11 |
| CN102378689A (zh) | 2012-03-14 |
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