EP3999343A1 - Verfahren und vorrichtung zum übertragen einer transferlage einer transferfolie auf ein substrat - Google Patents
Verfahren und vorrichtung zum übertragen einer transferlage einer transferfolie auf ein substratInfo
- Publication number
- EP3999343A1 EP3999343A1 EP20737163.4A EP20737163A EP3999343A1 EP 3999343 A1 EP3999343 A1 EP 3999343A1 EP 20737163 A EP20737163 A EP 20737163A EP 3999343 A1 EP3999343 A1 EP 3999343A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transfer
- substrate
- adhesion promoter
- range
- layer
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
- B41F19/02—Apparatus or machines for carrying out printing operations combined with other operations with embossing
- B41F19/06—Printing and embossing between a negative and a positive forme after inking and wiping the negative forme; Printing from an ink band treated with colour or "gold"
- B41F19/062—Presses of the rotary type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F16/00—Transfer printing apparatus
- B41F16/0006—Transfer printing apparatus for printing from an inked or preprinted foil or band
- B41F16/002—Presses of the rotary type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F16/00—Transfer printing apparatus
- B41F16/0006—Transfer printing apparatus for printing from an inked or preprinted foil or band
- B41F16/002—Presses of the rotary type
- B41F16/0033—Presses of the rotary type with means for applying print under pressure only, e.g. using pressure sensitive adhesive
Definitions
- the invention relates to a printing device, in particular one
- Offset printing device for transferring a transfer layer of a transfer film to a substrate and a method for transferring a transfer layer of a transfer film to a substrate by means of a printing device, in particular one
- WO 9217338 A1 describes a film printing process and a
- Foil transfer machine which is used to place a transfer layer of a transfer foil on a base, the transfer layer remaining partially or flatly adhering to the base after a subsequent release of the transfer foil.
- Offset printing machines widely used. However, using cold embossing in offset printing high demands on the optical quality of the surface of the transferred transfer layer cannot usually be achieved.
- a transfer layer of a transfer film onto a substrate by means of a printing device, in particular an offset printing device.
- the object is achieved by a printing device, in particular
- the printing device has a first printing unit which has a first transfer unit comprising a transfer cylinder with a transfer medium and a first substrate cylinder.
- the first transfer unit of the first printing unit is designed such that a first adhesion promoter is transferred from the transfer medium to a first area of the surface of the substrate.
- the object is also achieved by a method for transmitting a
- Transfer layer of a transfer film on a substrate by means of a printing device comprises the following step: transferring a first adhesion promoter by means of a first printing unit.
- the first printing unit here has a first transfer unit comprising a transfer cylinder with a transfer medium and a first substrate cylinder, the first adhesion promoter being transferred from the transfer medium to a first area of the surface of the substrate.
- this enables a printing device that is extremely flexible with regard to the printable inks, adhesion promoters and transfer layers that can be applied, as well as optical properties of the transfer layers, and a corresponding method.
- Offset printing device for example, a more fluid adhesion promoter, for example with Newtonian or almost Newtonian behavior, and / or with particularly low tack and / or viscosity for cold embossing can be printed. It is thus achieved, for example, that the transferred transfer layers are higher
- Transfer layers can fulfill, for example, a higher gloss, a higher smoothness and / or a more attractive mirror effect.
- Gloss is in particular an optical property of a surface, for example the surface of the transfer layer, preferably in the first area, light
- gloss preferably completely or partially, preferably reflecting in a specular manner. If a surface is not glossy, especially because it reflects light diffusely, this is preferably called mattness. For example, what color is gloss
- Gloss is in particular a sensory impression and therefore preferably depends on the viewer.
- reflectometers are preferred. Shine arises in particular when both directed and / or focused lighting, preferably on a surface, takes place, for example with directed
- Point light source or a spot, as well as the surface preferably reflected in a specular manner.
- each point of the surface preferably appears differently bright from different viewing angles and, in particular, light reflections preferably change with a movement of the viewer.
- a surface preferably looks very shiny when the brightness of one
- Point in particular from two different viewing positions, for example in binocular vision for each eye, preferably strong
- Mattness arises especially when the surface absorbs light preferably diffusely reflected or if it is preferred a global diffuse
- Lighting there. in particular, that is to say in particular when there is global diffuse lighting, it is preferably not possible to distinguish whether the surface is glossy or matt.
- Gloss is in particular defined physically, preferably as the quotient of the directionally reflected portion and the diffusely reflected portion of the luminous flux falling on a surface, preferably the surface mentioned above.
- the gloss in particular the quotient of the directionally reflected portion and the diffusely reflected portion of the luminous flux falling on a surface, preferably the surface mentioned above, is preferably determined quantitatively using gloss measuring devices.
- reflected light one preferably speaks of iridescence.
- Special forms of gloss which is preferably caused by local, high-gloss, small surface areas, as it is also typical for the variously stored crystal surfaces of the minerals of the mica group, but particularly preferably also for ice and / or for the reflections on finely structured surfaces such as water, and / or metal foil snippets (glitter) and / or metal effect pigments in a coating agent, such as metallic paints.
- This higher optical quality is achieved in particular by means of the printing device, in particular the offset printing device, and the method, the maximum possible resolution of the transfer layer on the substrate also being achieved when transferring the transfer layer of the transfer film to the substrate, in particular in the form of a cold foil transfer can.
- particularly good adhesion is also achieved here.
- the advantage is achieved in particular that the bandwidth of the printing inks and / or adhesion promoters that can be printed by means of the printing device, in particular offset printing device, and thus in particular their flexibility, is increased. This also reduces the set-up times for changing the printing ink and / or the adhesion promoter to be printed, for example.
- Widely used offset printing devices can be converted in such a way that no further printing device is necessary in order to ensure a certain flexibility in production.
- the transfer layer is preferably designed to be detachable from a carrier film of the transfer film.
- a “layer” and / or “layer” is preferably understood here to be an essentially flat structure, which in turn can preferably itself consist of several layers. It is, for example, a film or a circuit board. Alternatively, however, more complex three-dimensional geometries are also possible.
- Such a layer and / or position does not necessarily cease
- an independent component for example a transfer layer is also through
- Vapor deposition of a metal layer onto another layer preferably one
- the transfer film is preferably a cold stamping film and / or cold transfer film.
- An adhesion promoter is preferably understood here to be an adhesive and / or an adhesive.
- the first adhesion promoter is in particular a cold adhesive and / or cold foil adhesive. It is also possible that the
- Transfer layer one or more further adhesion promoter layers, preferably between further layers of the transfer layer to increase the cohesion of the transfer layer.
- the printing device in particular the offset printing device, is in particular a printing device, in particular offset printing device, for transferring a transfer layer of a transfer film to a substrate with a
- the method for transferring a transfer layer of a transfer film to a substrate by means of a printing device, in particular an offset printing device, is in particular a
- Cold foil transfer method for transferring a transfer layer of a transfer foil to a substrate by means of a printing device, in particular a
- Offset printing device The method is preferably carried out in an inline process.
- Transfer medium to the substrate has only a slight cleavage or im
- Substrate only very little adhesion promoter or, with essentially no cleavage, essentially no adhesion promoter on the transfer medium.
- this can preferably be achieved with a high surface tension and / or low viscosity of the first adhesion promoter. This is preferably the
- the surface of the adhesion promoter which was applied to the substrate is advantageously roughened only very slightly by a splitting process. It is thus possible to apply a transfer layer to the correspondingly smooth first adhesion promoter, the transfer layer then having a particularly high gloss and / or a particularly high smoothness. With cleavage, a separation of a layer is preferred here
- Printing ink for example an offset printing ink, and / or an adhesion promoter, for example the first adhesion promoter and / or a cold adhesive, to be understood in itself, in particular the cohesion of the printing ink and / or the
- Adhesion promoter is overcome. In other words, this means in particular the separation of a layer and / or a film of a printing ink and / or an adhesion promoter into two layers.
- the split-back is preferably set as low as possible.
- a slight cleavage is to be understood in particular as the fact that cleavage preferably takes place, but the influence on the surface roughness of the first adhesion promoter, in particular after transfer to the first area of the surface of the substrate, is slight.
- the first adhesion promoter has a Newtonian behavior or an almost Newtonian behavior.
- the behavior is measured in a state which exists before the first adhesion promoter is fed to the first transfer mechanism and / or while the first adhesion promoter is being transferred to the substrate.
- the first adhesion promoter to run onto the substrate after it has been transferred.
- this smooths the surface of the adhesion promoter before the transfer layer is applied, in particular by itself without external influences.
- the smoothness and / or the gloss of the first adhesion promoter and thus also the one applied later is preferred
- the first adhesion promoter has a viscosity
- a dynamic viscosity in the range from 200 mPa * s to 5000 mPa * s, preferably in the range from 500 mPa * s to 2000 mPa * s, more preferred in the range from 500 mPa * s to 1500 mPa * s.
- the viscosity in particular the dynamic viscosity, is here preferably measured in a state that exists before the first adhesion promoter is fed to the first transfer mechanism and / or while the first adhesion promoter is being transferred to the substrate. At the viscosity specified in the above range, in particular
- dynamic viscosity it can in particular also be an average value around which tolerance values in particular fluctuate.
- Such a viscosity ensures, in particular, optimal wetting of the transfer medium and / or the substrate. A higher viscosity results
- Viscosities are preferably given in Pascal seconds (Pas or Pa * s). Other indications can be found in poise, for example. 1 Pas preferably corresponds to 10 poise.
- the viscosity is preferably measured at a temperature of 20 ° C.
- the viscosity is preferably measured by means of a rotational viscometer or by means of a rheometer.
- rotation viscometers are preferably used, which preferably comprise a spindle which is rotated in a container.
- the spindle is preferably suspended from a torsion wire which, in particular at a defined rotational speed, is twisted proportionally to a rotational resistance.
- the rotational resistance is preferably directly proportional to the viscosity.
- Spindles of different types can be used for such rotational viscometers Type of construction are used, for example spindles for paper coating colors,
- the shear forces that prevail in each case are preferably calculated from the force exerted and the device geometry.
- the values are preferably entered in a diagram which indicates the shear and / or rotational speed on the abscissa and the shear stress on the ordinate.
- the diagrams are preferably also referred to as rheograms.
- the slope of the curve in particular reflects the viscosity of the liquid and / or the printing ink and / or the adhesion promoter. With a simple flow behavior and / or Newtonian behavior, the slope is therefore preferably constant. In other words, the viscosity remains the same and / or constant as the shear rate increases, and the shear rate preferably increases linearly as the shear stress increases.
- the viscosity, in particular the dynamic viscosity, of the first adhesion promoter thus preferably deviates with a tolerance in the range of 50 mPa * s to 250 mPa * s, preferably in the range of 50 mPa * s to 200 mPa * s, preferably in the range of 50 mPa * s to 150 mPa * s, from a constant viscosity, in particular a constant dynamic viscosity, and / or a Newtonian behavior, the constant viscosity, in particular the constant dynamic viscosity, preferably being an average value, the the tolerance values fluctuate.
- Newtonian liquids are widespread in nature, it preferably being possible to simplify the statement that all single-phase liquids, ie preferably no emulsions or suspensions, are Newtonian with a simple molecular structure. These are, for example, water, gasoline, viscous mineral oils and glycerine.
- the first adhesion promoter is preferably single-phase, for example. It is also possible that at a higher temperature of a system the
- Thermal molecular motion speeds is higher.
- the braking force of molecules decreases, which preferentially change from one molecular layer to an adjacent molecular layer in a model made up of many molecular layers, because they also have ever higher intrinsic proportions in the direction of flow.
- the viscosity of a printing ink and / or one preferably decreases
- viscometers are, for example, drop bar viscometers, ball drop
- the viscometer and flow cup are preferably the dynamic one
- Viscosity is in particular about force, speed and / or
- a varnish sample, a printing ink sample and / or an adhesion promoter sample is passed over an eyelet of a
- thermostated holder thermostated holder.
- a drop rod in particular one that fits exactly through the eye, is then preferably allowed to slide through the eye.
- the viscosity preferably the dynamic viscosity, of the varnish sample, printing ink sample and / or adhesion promoter sample is preferred, which is in particular a braking pasty
- Sink speed of a ball in the printing ink and / or the adhesion promoter is determined, in particular whereby the viscosity, preferably the dynamic
- Viscosity is determined.
- a flow cup which is preferably used for flexographic printing inks, for gravure printing inks and / or printing varnishes is used.
- a flow cup method a flow cup is immersed in a substance to be measured, in particular in a liquid to be measured, printing ink and / or in the adhesion promoter to be measured. The flow cup is then made of the substance to be measured, in particular the liquid, printing ink and / or the to be measured
- the flow cup preferably has a defined geometry and preferably has a hole with a defined geometry at its bottom.
- the substance to be measured in particular the liquid to be measured, the printing ink and / or the adhesion promoter to be measured, flows in particular out of the hole and preferably forms a jet.
- the time until the jet breaks off is preferably measured.
- the time between pulling out the flow cup and breaking off the jet is measured.
- Highly viscous substances, in particular liquids, printing inks and / or adhesion promoters here preferably require longer than low-viscosity substances, in particular liquids, printing inks and / or adhesion promoters.
- the flow cup comprises a rod for dipping in and for pulling out. It is also possible that the flow cup is a
- the jacket surface is connected to a conical bottom opposite the opening.
- the floor preferably has the hole, in particular in a plan view of the floor in the middle of the floor, the hole preferably being circular.
- the hole is in particular formed by a nozzle.
- a suitable nozzle diameter is preferably selected here.
- a nozzle diameter of 4 mm is preferably used for a flexographic printing ink and / or for the first adhesion promoter.
- a nozzle diameter of 3 mm is used for a gravure ink.
- a liquid not only to have a fixed, preferably constant, viscosity under all shear conditions, in particular when otherwise the same Conditions.
- a liquid is preferably referred to as non-Newtonian.
- An example of this is an ideally plastic body, which in particular has a yield point.
- a flow limit is preferably a characteristic minimum force for tearing apart structures, in particular the tear-away force. If a first non-elastic deformation has taken place, an ideally plastic body then preferably behaves like a Newtonian liquid. Accordingly, the viscosity here preferably remains a fixed one
- the shear stress increases in particular first degressively with a uniformly increasing shear rate and then preferably approaches a constant gradient or viscosity, the viscosity preferably decreasing regressively with increasing shear rate and then preferably approaching a constant viscosity.
- Many technical processes are based on pseudoplastic behavior or are dependent on it, for example toothpaste does not run out of the tube before the toothpaste is pressed and does not flow off between the bristles of the brush.
- Another example are paints which, if possible, do not drip from the brush because they have a very high viscosity when transported with the brush. These can then be made to flow quickly on a surface, since the viscosity tends to decrease when brushing. The viscosity then preferably increases again and, in particular, the paint does not run in teats.
- the shear stress preferably first increases regressively and then in particular approaches a constant gradient or viscosity, the viscosity preferably first increasing degressively and then in particular approaching a constant viscosity.
- cold foil adhesives previously used in offset printing preferably have non-Newtonian behavior or almost non-Newtonian behavior. Due to the comparatively strong splitting back when printing the cold foil adhesive in offset printing, especially in the form of an offset cold foil adhesive, and its high viscosity, a rough surface of the cold adhesive printed by means of conventional offset printing results after it has been transferred to a printing material.
- This high viscosity in particular also called intrinsic viscosity or shear dentification, is the property of a fluid to show a decreasing viscosity, preferably at high shear forces, i.e. in particular the higher the shear, the thinner the cold foil adhesive becomes. That is why such cold foil adhesives are called “non-Newtonian adhesives”.
- the viscosity is preferably higher at low shear, so that it is possible that a non-Newtonian cold adhesive without an external
- Shear action preferably does not flow or proceed.
- the printed cold adhesive in particular stops and preferably changes its size and shape
- Shear forces occur in particular with a closed surface the surface is preferably not to be seen as homogeneous in the surface.
- this shear viscosity creates a “mountain and valley” on the substrate
- the adhesive is not completely smoothed in conventional offset printing, for example, ie the “mountain and valley landscape” is preferably only smoothed to a minimal extent. In particular, this is directly reflected in the gloss that can be achieved by means of printing, in particular offset printing.
- the method is preferably carried out in such a way and the printing device, in particular the offset printing device, is preferably designed such that the first adhesion promoter has particularly good tack.
- the tack of a printing ink and / or an adhesion promoter is in particular also referred to as “tack”.
- the tack preferably denotes the internal cohesion, preferably the cohesion, of a cohesive one
- Amount of liquid for example a contiguous amount of
- tackiness is preferably to be understood as the resistance which a printing ink layer and / or adhesion promoter layer opposes to their splitting.
- the tack of a printing ink and / or an adhesion promoter is preferably independent of the surface on which the printing ink and / or the adhesion promoter is located. In particular, this means that tack describes cohesion and not adhesion.
- first adhesion promoter and components and / or surfaces such as the first transfer medium and / or the anilox roller, for example because the distribution of the first adhesion promoter is caused by the geometry and arrangement as well as the movement and deformation of such components and /or
- a higher "tack" is created, for example, by a rougher surface structure of the transfer medium, for which the above-mentioned printing and
- the transfer medium is sanded, the lower the preferred "tack".
- the printing ink and / or the printing ink are split back
- Adhesion promoter is less and the surface of the adhesion promoter is less rough, in particular after the transfer of the first adhesion promoter to the first area of the surface of the substrate.
- Transfer layer areas which leads in particular to a reduced gloss.
- One reason for this is, for example, an application weight of the cold adhesive that is too low and / or a principle-related high viscosity of the adhesion promoter.
- the cleavage during the transfer of the adhesion promoter to the substrate results in a relatively high surface roughness of the printed adhesion promoter.
- the adhesion promoter due to the high viscosity of the adhesion promoter, in particular the cold adhesive, the adhesion promoter “stands” and is roughly “separated”. If the film is now unrolled on it, this has so far been done in particular by means of relatively low pressure, so that, for example, the cold adhesive is not “pressed flat”.
- a high tack being associated, for example, with a high viscosity, but in addition to the viscosity there are preferably further influencing factors.
- rollers On rollers, cylinders and / or transfer media arranged thereon, in particular a film or a layer of the media to be transported over them is formed
- Example correspondingly more energy converted into heat.
- a higher speed thus leads in particular to greater heating in the printing unit, in particular in the inking unit.
- the higher expenditure of force when splitting the film leads in particular to stronger plucking forces which are exerted on the printing material, in particular the substrate.
- Particles from the printing material, in particular the substrate increase in particular correspondingly.
- the adhesion promoter is applied in a particularly rough manner, which, for example, creates the aforementioned “mountain and valley” landscape.
- sensitive material in particular a multi-layer substrate, breaks open and / or is caused to delaminate, that is to say preferably splitting off the topmost layer or layer from the rest of the substrate.
- a disadvantage of poor tack is in particular that the printing ink and / or the adhesion promoter splits less favorably through the printing unit, in particular the inking unit.
- the poorer splitting also leads, for example, to a lower transfer of the printing ink and / or the adhesion promoter from a printing or rubber blanket to the printing material, in particular to the substrate.
- the layer thickness of the printing ink and / or adhesion promoter applied to the substrate is, in particular, less strong and as a result the printing ink and / or the adhesion promoter has, for example, less color on the printing material, in particular the substrate. Formation of an emulsion of the printing ink and / or the adhesion promoter with the water is particularly less favorable.
- the print image appears sharper overall with a quick printing ink and / or a quicker adhesion promoter.
- “faster” describes a higher speed of a printing ink and / or an adhesion promoter. The quicker the printing ink and / or the adhesion promoter, the “sharper” it becomes
- a point made of printing ink and / or adhesion promoter that is transferred to a substrate has a higher edge definition and / or higher resolution with a higher tack.
- More rapid printing inks and / or adhesion promoters are preferably used for a stable printing process.
- Printing is possible.
- the advantages are achieved that it is made possible to transfer the transfer layer to the first adhesion promoter, the transfer layer having a particularly high smoothness and / or a particularly high gloss may have.
- chucking forces that are exerted on the substrate are reduced.
- water is added to the printing ink
- the first flaft mediator advantageously has, in particular, a lower one
- the first flaft mediator flows here, for example, at a lower shear stress.
- Machine setting preferred a higher optical density printed The quicker printing ink and / or the quicker flaft agent splits particularly better than the less quick or the less quick, that is to say the splitting back is less.
- the printing ink and / or flaft agent is preferably transferred better and in particular in a greater layer thickness onto the printing material.
- the flaft mediator and / or the printing ink makes, for example, a stronger color impression, preferably without a higher pigmentation being present.
- the adhesion promoter and / or printing ink transfer from a transfer medium, a printing blanket and / or rubber blanket to a substrate, for example a paper is higher, for example 48% instead of 40%, from a transfer medium, a printing blanket and / or rubber blanket and Substrate cylinder arranged layer of the adhesion promoter and / or the printing ink, then the adhesion promoter and / or printing ink flow is preferably increased
- first transfer unit and / or an inking unit for example the first transfer unit and / or an inking unit, in particular the first and / or second inking unit, passes through.
- first transfer unit and / or an inking unit in particular the first and / or second inking unit, passes through.
- Chamber doctor blade system and / or the opening of a first and / or second
- the tack preferably denotes a force per area and is in particular like a pressure in the SI unit Pascal or Newton per
- a Tack-O-Scope from Rudolph Meijer’s Drukinktfabriek N.V. is preferably used for machine-based, practical and process-related determination of the tack with the Tacko unit. used.
- a certain amount of the printing ink and / or the printing ink is preferably used on three rollers lying one above the other
- Adhesion promoter in particular the first adhesion promoter, distributed.
- the axis of the outer roller is connected in particular to force transducers.
- the outer roller of the first adhesion promoter Preferably by the resistance when splitting the printing ink and / or the adhesion promoter, in particular the first adhesion promoter, the outer roller of the first adhesion promoter
- the force measured here is converted into a manufacturer-dependent scale, in particular by a measuring device converted and is further dependent on process variables such as the layer thickness, the temperature and the speed of rotation.
- the Inko-Tackomat from the company strigbau can indicate the speed both in 0 Inko to 42 Inko and in 0 Tacko to 700 Tacko.
- the Tack-O-Scope and the inkometer are also used.
- the printing sample and / or the adhesion promoter sample are preferably created, in particular taking into account DIN ISO 2846-1 and ISO 2834, on a test printer from the company fürbau.
- a pressure device is tempered to 30 ° C., for example.
- the printing speed is preferably set to 1 m / s and the pressure, in particular the transfer of the printing ink and / or the
- Adhesion promoter carried out with 600 N / cm.
- the Shore A hardness of the printing form is preferably between 60 ° and 70 ° Shore.
- the time for trituration and coloring of the printing ink and / or the adhesion promoter is preferably 20 seconds each.
- the tack of 1 ml of printing ink and / or adhesion promoter is determined taking into account the ISO 12634 standard with an Inkomat from the manufacturer strigbau at a temperature of 30 ° C after an inking time of 60 seconds and a measuring time of 3 minutes at a running speed of 100 m / min determined.
- a quick printing ink and / or a quick adhesion promoter is preferably referred to here as “long” because, during its splitting process, in particular during its
- printing inks and / or adhesion promoters with low tack are preferably also referred to as “short” or “buttery”. This relationship is preferably used in a simple test, the “finger test”. Here, a sample of the printing ink and / or the adhesion promoter is pulled apart, in particular between two fingers observes when the thread that is being formed breaks. A long thread is particularly a sign of high speed. At multiple
- Offset bond broker is faster than the first flaft broker
- the method is carried out and / or the printing device, in particular offset printing device, is designed in such a way that the first flaft mediator on its surface facing away from the substrate is as small as possible after the first flaft mediator has been transferred to the substrate Has surface roughness. Since the first flaft mediator in this state is in particular still uncured and thus, for example, soft, viscous and / or not yet solidified, a direct measurement of the first flaft mediator in this state is in particular still uncured and thus, for example, soft, viscous and / or not yet solidified, a direct measurement of the first flaft mediator in this state is in particular still uncured and thus, for example, soft, viscous and / or not yet solidified, a direct measurement of the first flaft mediator in this state is in particular still uncured and thus, for example, soft, viscous and / or not yet solidified, a direct measurement of the first flaft mediator in this state is in particular still uncured and thus, for example, soft, viscous and /
- heights and depths of the first run preferably flow, in particular because of a lower degree of smoothness in the surface profile
- Adhesion promoter which is used, for example, in conventional offset printing
- the first adhesion promoter is a flexographic printing adhesive and / or flexographic printing adhesion promoter and / or a flexographic cold film adhesive and / or preferably in the form of a flexographic adhesive and / or flexographic printing adhesion promoter and / or
- Flexo cold foil adhesive is transferred to the substrate.
- the printing device is designed and / or the method is carried out in such a way that the first adhesion promoter has an application volume in the range from 2 cm 3 / m 2 to 10 cm 3 / m 2 , preferably in the range from 2.5 cm 3 / m 2 to 7 cm 3 / m 2 , and / or with a
- Application weight of 3 g / m 2 to 15 g / m 2 preferably in the range of 4 g / m 2 to 8 g / m 2 , is transferred to the substrate.
- a corresponding application weight is preferably determined from the application volume via the density, or vice versa.
- the advantage is achieved that the flexibility of the printing device, in particular the offset printing device, is improved with regard to the printable application weights.
- the transfer of the first adhesion promoter to the substrate is carried out with a contact pressure, the contact pressure preferably over the distance between the transfer medium and / or the transfer cylinder with the
- Transfer medium and the first substrate cylinder preferably in the form of a gap, is adjustable and / or is set. That distance is here
- this distance is in the range from -0.5 mm to +0.75 mm, preferably in the range from -0.1 mm to +0.3 mm, and / or can be set in this range.
- These negative and positive values relate in particular to a basic setting of the first Substrate cylinder relative to the transfer cylinder, in particular relative to the surface of the transfer medium, preferably also taking into account the layer thickness and / or thickness of the substrate. From this basic setting, the pressure on the substrate can now be reduced, in particular by setting negative values, for example -0.1 mm, and / or increased, in particular by setting positive values, for example +0.3 mm.
- the transfer medium preferably comprises a carrier plate which in particular comprises or consists of polyester, preferably PET, and / or metal, preferably aluminum, and / or which preferably has a thickness in the range from 0.5 mm to 5 mm.
- the transfer medium in particular on the side of the carrier plate facing away from the transfer cylinder, has an outer layer which preferably comprises or consists of a photopolymer.
- the transfer medium in particular the outer layer of the transfer medium, preferably comprises one or more motifs, which are preferably incorporated into the transfer medium, in particular the outer layer of the transfer medium,
- a motif is also understood to mean, in particular, a pattern, in particular an endless pattern.
- One or more patterns and / or motifs are selected in particular from the group: a graphically designed outline, a figurative one
- the first adhesion promoter is preferably transferred over part of the area and / or partially, in particular in the form of one or more patterns and / or motifs, to the substrate in the first area by means of the transfer medium.
- the transfer medium in particular the outer layer of the transfer medium, preferably at least one first motif of the one or more motifs, has a grid width of a maximum of 150 ipi, in particular a maximum of 120 ipi, and / or a maximum of 59 lines / cm, especially of a maximum of 47
- the first adhesion promoter at least regionally with a resolution of a maximum of 150 Ipi, preferably a maximum of 120 Ipi, and / or a maximum of 59 lines / cm, preferably a maximum of 47 lines / cm, from the transfer medium, in particular from the outer layer of the transfer medium, is transferred to the substrate.
- Ipi stands for “lines per inch”.
- L / cm stands in particular for "lines per cm”.
- the resolution is preferably to be understood as the number of raster cells per unit distance of a printing raster.
- At least one second motif of the one or more motifs is preferably used, preferably for applying a flexographic printing ink and / or an offset printing ink to the substrate.
- the one or more motifs of the transfer medium in particular the outer layer of the transfer medium, preferably comprise one or more lines with a minimum line width of 0.05 mm, in particular 0.1 mm and / or a minimum point with a smallest dimension of 0, 05 mm, in particular 0.1 mm.
- the one or more motifs are preferred from one or a plurality of raised areas, preferably wherein at least one of the raised areas has a width and / or length in the said area on its side facing away from the carrier plate.
- the first adhesion promoter to be applied to the transfer medium with a line thickness of at least 0.05 mm, in particular at least 0.1 mm.
- the advantage is achieved that, by means of the transfer medium, the principle-related maximum resolution for transferring the transfer layer to the substrate can be achieved, preferably with the maximum possible gloss of the transfer layer being increased after the transfer.
- the dissolution of the first adhesion promoter in particular in the event that a transfer layer of a transfer film is transferred to the substrate with the first adhesion promoter, with the transfer film only remaining where the first adhesion promoter is applied, in particular when a carrier film is peeled off, is therefore preferably not less than the maximum possible resolution for one
- a certain adhesion between the transfer layer and the substrate is preferably necessary, which ensures that when the carrier film of the transfer film is peeled off, the transfer layer remains in the first area on the substrate, whereby the dissolution of the adhesion promoter is particularly limited.
- this has the advantage that a higher gloss of the transfer layer on the substrate can be achieved with the first adhesion promoter while maintaining the maximum resolution.
- the carrier plate preferably being high
- Register or register or register accuracy or register accuracy is preferably understood to mean a positional accuracy of two or more elements and / or layers, here in particular the transfer layer to the substrate.
- the register accuracy is particularly within one
- the register accuracy is preferred when transferring several transfer layers of the several transfer layers and / or several webs of a transfer layer or several
- Transfer layers to one another are an important feature in order to increase process reliability.
- registration marks or register marks preferably represent either special separate elements, areas, layers and / or layers or are preferably themselves part of the elements or areas or layers to be positioned.
- advantages result from the fact that, in particular, cost-intensive materials and / or processes can be used particularly “economically” and in a targeted manner, and can be processed using process conditions adapted to these. This also results in cost savings and a reduction in the reject rate.
- the transfer medium has a thickness in the range from 0.5 mm to 10 mm, in particular in the range from 0.76 mm to 6.35 mm.
- the transfer medium preferably also has a length in the range from 500 mm to 2000 mm and / or a width in the range from 500 mm to 1500 mm. These dimensions are particularly dependent on the dimensions of the respective substrate and the printing machine used. It is also possible for the transfer medium, in particular at least one motif of the one or more motifs, to have a relief depth in the range from 0.5 mm to 1.0 mm, in particular from 0.5 mm to 0.9 mm. Preferably determines the
- Relief depth is the height of the one or more raised areas, which in particular form the one or more motifs.
- the transfer medium in particular the outer layer of the transfer medium, preferably the one or more motifs, has a surface roughness, preferably an Ra value, in
- the surface of the transfer medium, in particular the outer layer, preferably the one or more motifs, is thus advantageously smooth enough to
- Such a roughness of the transfer medium which is particularly low, preferably further improves the wetting ability of the transfer medium with the first adhesion promoter. For example, a split back of the
- Adhesion promoter can be largely or completely avoided. This also preferably ensures that the adhesion promoter is not in an uncontrolled manner on the
- the transfer medium runs or drips and, in particular, excessive plucking forces which act on the substrate are avoided.
- the transfer medium in particular the outer layer of the transfer medium, has a hardness in the range from 50 Shore A to 80 Shore A, in particular from 55 Shore A to 60 Shore A.
- the transfer medium is particularly suitable for printing flexographic printing inks and / or flexographic printing adhesives.
- the transfer medium comprises a varnish plate and / or a varnish printing blanket and / or a flexographic cliché and / or that, when the first adhesion promoter is transferred from the transfer medium to the first area of the surface of the substrate, the transfer medium has a Lacquer plate and / or a
- Coating printing blanket and / or a flexographic plate includes or is. It is also conceivable here that the transfer medium is and / or comprises in particular a coating printing blanket, a coating plate and / or a rubber blanket, which in particular transfers a second adhesion promoter from the first inking unit to the substrate, preferably when the first inking unit is in a coupled state is located.
- the transfer medium enables in particular a partial and / or partial transfer of the first adhesion promoter and / or second adhesion promoter to the substrate.
- Adhesion promoter since the transfer medium in particular enables its processing.
- the transfer medium further achieves the advantage that it enables in particular a partial transfer or a transfer in the form of one or more motifs of the first adhesion promoter to the substrate, with a conveying element connected upstream of the transfer medium, for example the
- the first adhesion promoter has not yet taken up in the form of one or more motifs. In particular, this stands for an upstream
- Conveying element in particular the anilox roller and / or a chambered doctor blade system, preferably open design options, which in turn enable the transfer of adhesion promoters with special requirements, for example a low viscosity of the first adhesion promoter.
- a first transfer mechanism comprising a transfer cylinder with a transfer medium in a printing device, in particular Offset printing device, advantageous.
- the printing device in particular the offset printing device, is improved in accordance with the advantages mentioned.
- the method is particularly preferably possible for the method to be carried out and / or for the printing device, in particular offset printing device, to be designed in such a way that the transfer layer, especially measured after the
- the carrier film of the transfer film has been peeled off, has a smoothness, in particular measured according to Bekk in accordance with DIN 53107: 2016-05, preferably with a Bekk Smoothness Tester, preferably of the type 533 from Messmer Büchel, of at least 200 s and / or a surface smoothness, in particular measured after this
- Parker Print Surf method preferably using the air flow method according to DIN ISO 8791-4: 2008-05, preferably using a Parker Print Surf test device PPS 90 from Messmer Büchel, in the range from 0.05 ⁇ m to 1 , 5 pm, preferably in the range from 0.1 pm to 1 pm.
- the method is carried out and / or the printing device, in particular the offset printing device, is designed in such a way that the transfer layer, in particular measured after the carrier film
- Transfer film was peeled off has a gloss, in particular greater than 500 GU with a measurement geometry of 60 ° and / or greater than 100 GU with a measurement geometry of 85 °, preferably measured with a device of the “micro tri gloss” type from Byk Gardener. These measuring devices are used in particular to determine the
- Degree of gloss preferably of paint coatings, plastics, ceramics and / or metallic surfaces.
- the surface is illuminated in particular at a defined angle and the reflected light is preferably measured photoelectrically, preferably by means of a reflectometer.
- the measuring device corresponds in particular to the standards DIN 67530, ISO 2813, ASTM D 523 and / or BS 3900 Part D5.
- the device is preferably stored in the case with the integrated glass standard. In particular, when switched on
- a self-test is preferably carried out automatically to identify any changes of the measurement signal preferably checks against the stored calibration data.
- gloss is preferably determined using gloss units or degree of reflection.
- the "micro tri gloss” device has the following key characteristics:
- the unit of measurement GU means “gloss unit”.
- the gloss values determined are particularly preferred when measuring the transfer layer, in particular the substrate with the transfer layer, with a
- Transfer layer and / or the substrate with the transfer layer measured in the first area in particular measured on the surface of the transfer layer in the first area.
- the substrate especially measured before
- a surface smoothness preferably measured according to PPS 10, ISO 8791-4, in the range from 0.5 ⁇ m to 2.0 ⁇ m, preferably with a tolerance in the range from 0.01 ⁇ m to 0.2 pm, on.
- the substrate has a gloss in the range from 20% to 80%, preferably in the range from 50% to 75%, especially measured according to TAPPI® T480, preferably with the microgloss 75 ° measuring device from BYK Gardener, preferably at an angle of 75 °.
- the substrate has a pick resistance, in particular measured before the transfer of the first adhesion promoter to the substrate, preferably measured in accordance with ISO 3783: 2006-07, preferably with the measuring device Amsterdam 5 (4 m / s) from IGT by 0.5 m / s to 4 m / s, in particular from 0.75 m / s to 4 m / s.
- the pick resistance is measured in particular with a final speed of 4 m / s and preferably with a contact pressure of 350 N and preferably IGT plucking oil of medium viscosity as the test printing ink. There are preferably five
- the absorption behavior is measured in particular on a test printer from IGT, preferably with one or more of the following properties and / or parameters:
- Print / reverse pressure rollers aluminum (50 mm wide)
- samples 3 to 6 are of the following type: Sample 3: Ensocoat 2S paper substrate, in particular only two each
- Print strips preferably two print strips in each direction, are evaluated.
- Pattern 4 Invercote G paper substrate
- Pattern 5 Paper substrate Performa White
- Pattern 6 Profigloss paper substrate.
- the evaluation of the absorption test is preferably carried out by means of
- Color density measurement preferably with a GRETAG densitometer, on fields, in particular reverse printing fields, with a lower density, preferably a lower optical density, of the reverse printing in particular means that more printing ink has been thrown into the test paper.
- a lower density preferably a lower optical density
- five individual values of the optical density per field are measured on each sample per field, preferably per counter-pressure field.
- Backing paper is preferably understood to mean the backing printing paper, which is preferably the substrate.
- a field is preferably understood to be a counter pressure field.
- the parameter n is used to determine the number of individual measurements
- the standard deviation is preferably given with the parameter SD.
- pattern 5 has the best results in terms of the setting behavior.
- the substrate is made in such a way that the first adhesion promoter, in particular, does not "knock off” excessively quickly, i.e. sink in. In other words, for example, the first adhesion promoter does not seep into the substrate or only slowly.
- the material used for the substrate is preferably paper, cardboard, plastic film, metal foil or a laminate comprising at least two of these materials.
- the substrate preferably has a surface that has been painted at least twice and is as smooth as possible, and is preferably not very absorbent. Furthermore, the substrate preferably has a grammage, in particular a specific weight, between 70 g / m 2 and 350 g / m 2 .
- the substrate is provided by means of a roll, in particular wherein the substrate is processed in a roll-to-roll method, and / or that the substrate is processed in particular as sheet goods.
- the substrate is preferably designed to be flexible, so that it is processed in a roll-to-roll process, preferably continuously or on a sheet-fed printing machine, in particular a sheet-fed offset printing machine.
- a tape-shaped substrate wound up and / or provided on a roll or a substrate in the form of individual printed sheets is used.
- the substrate comprises or consists of one or more and / or combinations of the following materials: Chromosulfate cardboard,
- Chromo board picture printing paper, semi-gloss coated paper, matte coated paper, gloss coated paper, one-sided coated non-waterproof label paper, one-sided coated waterproof label paper,
- the substrate has the following layer structure with layers comprising the materials, in particular in the following order:
- the substrate has the following
- the substrate prefferably has the following layer structure with layers, in particular in the following order:
- the substrate is supplied as a sheet
- the first transfer mechanism further comprises an anilox roller which is designed in such a way that it transfers in particular the first adhesion promoter to the transfer medium of the first transfer mechanism.
- the anilox roller can preferably be coupled and decoupled.
- the first adhesion promoter is preferably transferred to the transfer medium of the first transfer mechanism by means of the anilox roller.
- Coupling and decoupling is understood here, in particular, to mean that a connection with the transfer medium can be established and canceled, which would result in a transfer of an adhesion promoter, in particular the first and / or second adhesion promoter, and / or a printing ink, from the couplable and uncoupled component, in particular the anilox roller, the chamber doctor blade system, the first inking unit and / or the first dampening unit, on the transfer medium.
- couplable and decoupling is understood in particular to be a connection with one Pressure blanket and / or an offset printing blanket can be produced and removed, which enables a transfer of an adhesion promoter, in particular the first and / or second adhesion promoter, and / or a printing ink, from the couplable and uncoupling component to the pressure blanket and / or an offset printing blanket.
- the first transfer mechanism further comprises a chambered doctor blade system, which is designed in particular in such a way that the first adhesion promoter is transferred from the chambered doctor blade system to the anilox roller, in particular wherein the chambered doctor blade system can preferably be coupled and decoupled together with the anilox roller.
- BCM is preferably the abbreviation for Billion Cubic Micron.
- a BCM corresponds to 1.55 cm 3 / m 2 .
- the application volume is, for example, 22 cm 3 / m 2 and / or 14 BCM.
- the adhesive density is, for example, 1 g / ml.
- One milliliter (ml) preferably corresponds to one cubic centimeter (cm 3 ).
- One cubic centimeter each Square meter (cm 3 / m 2 ) corresponds in particular to a layer thickness of 1 ⁇ m.
- the anilox roller preferably has an engraving angle in the range from 30 ° to 90 °, in particular in the range from 45 ° to 60 °.
- the anilox roller has an engraving, preferably wherein the engraving comprises one or more of the engraving types selected from: truncated pyramid, cell, dome, hash, in particular line structure, hash with cells and / or hexagonal shape or a combination thereof.
- the grid width of the anilox roller is
- the grid width is preferably also referred to as ruling.
- the grid width preferably provides information about the distance between the depressions or cells.
- the number and spacing of the cells preferably result in the ruling. If an anilox roller has more cells, then
- Adhesion promoter and / or printing ink transferred which preferably corresponds to a lower scoop volume.
- Adhesion promoter on the substrate and / or before the transfer layer is applied to the substrate has a sufficiently high surface tension.
- the first adhesion promoter is sufficiently picked up, conveyed and dispensed by means of the anilox roller.
- a selected surface tension that is not too low ensures that the first
- Adhesion promoter preferably not during the rotation of the anilox roller runs out of the cell in an uncontrolled manner before the surface of the first adhesion promoter comes into contact with the transfer medium.
- the printing device preferably has a second printing unit, in particular which is connected to the first printing unit via a conveying element.
- the conveying element is or comprises a conveying path for conveying the substrate, in particular wherein the substrate is processed in the form of rolled goods.
- the conveying element is or comprises a drum, in particular with substrate holders, for conveying the substrate, in particular wherein the substrate is processed in the form of sheet goods.
- the second printing unit prefferably has a second transfer unit comprising a pressure cylinder with a pressure blanket and a second
- the second transfer mechanism is designed in particular in such a way that the transfer layer is applied from the pressure pad to the substrate with the first adhesion promoter transferred in the first area. It is possible here that the method preferably further comprises the following step, in particular after the first adhesion promoter has been transferred to the substrate:
- a second printing unit which has a second transfer unit comprising a pressure cylinder with a pressure cloth and a second substrate cylinder, in particular wherein the transfer layer is applied from the pressure cloth to the substrate with the first adhesion promoter transferred in the first area.
- the transfer layer is preferably applied to the substrate with the first adhesion promoter transferred in the first area, preferably with a contact pressure carried out, the contact pressure preferably over a distance, in particular in the form of a gap, between the pressure pad and the second
- Substrate cylinder is adjustable and / or is set. This distance is in particular in the range from -0.5 mm to +0.75 mm, preferably in the range from -0.1 mm to +0.3 mm and / or can be set in this range. These negative and positive values relate in particular to a
- Such a contact pressure can be generated in particular due to the properties of the first adhesion promoter and / or the substrate.
- This has the particular advantage that the transfer layer is applied particularly smoothly, preferably with the potential for cracking being reduced.
- the pressure cloth has a hardness in the range from 50 Shore A to 90 Shore A, in particular in the range from 70 Shore A to 90 Shore A.
- the pressure pad preferably has a thickness in the range from 1.5 mm to 2.5 mm, in particular from 1.7 mm to 2.0 mm. It is also possible for the first and / or second printing unit to include a curing device for curing the first adhesion promoter. A method is conceivable here, the following step preferably being carried out:
- the curing device is preferably on the first and / or second
- Arranged substrate cylinder in particular such that the substrate is arranged between the curing device and the first and / or second substrate cylinder when the first adhesion promoter is cured.
- the first adhesion promoter to be cured during curing by means of irradiation and in particular to be irradiated through the transfer film, preferably through the carrier film and / or the transfer layer of the carrier film.
- a smooth application in particular an application of adhesive, is preferably achieved, in particular before the transfer layer with the pressure pad is applied. If one cures in particular through the transfer layer with the carrier film, preferably with a PET film, then in particular the surface gloss becomes one on the first
- Adhesion promoter applied transfer layer further improved.
- the first adhesion promoter is preferably cured on a curing section between 10 cm and 60 cm, in particular between 15 cm and 25 cm, and / or between 20 cm and 30 cm, in particular the substrate with the transfer film over the curing section by means of one or more first To guide rollers is promoted.
- the curing device hardens the first adhesion promoter on a curing section between 10 cm and 60 cm, in particular between 15 cm and 25 cm and / or between 20 cm and 30 cm, in particular wherein the curing section comprises one or more first deflecting rollers, which are preferably such designed are that these the substrate with the transfer film in particular along the
- the first and / or second printing unit comprises a pre-hardening device which is in particular arranged in such a way that preferably after, in particular immediately after, preferably 0.05 s to 0.2 s after, the transfer of the first adhesion promoter on the substrate and / or before the transfer layer is applied to the substrate with the first adhesion promoter transferred in the first area, the pre-curing device pre-cures the first adhesion promoter.
- the transfer of the first adhesion promoter to the substrate and / or before the transfer layer is applied to the substrate with the first adhesion promoter preferably 0.05 s to 0.2 s after the transfer of the first adhesion promoter to the substrate and / or before the transfer layer is applied to the substrate with the first adhesion promoter.
- the first adhesion promoter is preferably cured by means of the hardening device during curing after, in particular immediately after, preferably 0.05 s to 0.2 s after, the transfer of the transfer layer to the substrate with the first adhesion promoter transferred in the first area. It is therefore expedient that the curing device is designed in such a way that it releases the first adhesion promoter after, in particular immediately after, preferably 0.05 s to 0.2 s after
- Transferring the transfer layer to the substrate with the first adhesion promoter transferred in the first area cures.
- the arrangement of the hardening device and / or the pre-hardening device means that a compact design of the printing device is preferably achieved.
- a conveying path between the first and second printing device is preferably used at the same time as a curing path. This also makes it possible, for example, to save energy, in particular thermal energy.
- the printing device in particular the second printing unit, preferably comprises a peeling device which is preferably designed such that the carrier film of the transfer film is peeled off, in particular wherein the transfer layer remains in the first area on the substrate. That means in particular that the
- the transfer layer only remains on the substrate where the first adhesion promoter is and / or will be transferred.
- Conveying direction of the substrate is arranged before the pulling device and / or after the first transfer mechanism, in particular the transfer medium.
- no curing device and / or pre-curing device is arranged in the conveying direction of the substrate downstream of the peeling device and / or preferably no curing and / or pre-curing is carried out after peeling off the carrier film of the transfer film.
- the curing in particular in the conveying direction of the substrate, is carried out before the transfer film is pulled off and / or after the first adhesion promoter has been transferred to the substrate.
- the carrier film is peeled off, there is advantageously no renewed tension of the first adhesion promoter and / or preferably no plucking force on the substrate, the first adhesion promoter and / or the transfer layer.
- the transfer layer is preferably not negatively influenced and, in particular, the advantage is achieved that the smoothness and / or the gloss of the transfer layer is increased.
- the second printing unit comprises a deflection device with one or more deflection stations, which is preferably designed such that the transfer layer is passed through once or repeatedly between the pressure cylinder and the second substrate cylinder.
- the transfer layer is preferably applied to the substrate once or repeatedly and / or the carrier film of the transfer film is repeated once or several times
- the transfer layer remains at least partially on the substrate with the first adhesion promoter in the first area.
- the material of a transfer film is optimally used here by repeatedly applying the transfer layer to the substrate. It is also possible here for the transfer layer to be applied several times to one or more substrates.
- the curing and / or the pre-curing is preferably carried out by means of irradiation selected from the group: UV irradiation, in particular by means of high pressure UV mercury vapor lamps, medium pressure UV mercury vapor lamps, low pressure UV mercury vapor lamps, UV low energy, and / or UV-LED, and / or electron beams (e-beam) or a combination thereof.
- irradiation selected from the group: UV irradiation, in particular by means of high pressure UV mercury vapor lamps, medium pressure UV mercury vapor lamps, low pressure UV mercury vapor lamps, UV low energy, and / or UV-LED, and / or electron beams (e-beam) or a combination thereof.
- Pre-curing device comprises one or more lamps selected from the group: UV lamps, in particular high-pressure UV mercury vapor lamps,
- UV Medium pressure UV mercury vapor lamp, low pressure UV mercury vapor lamp, UV low energy and / or UV LED emitters, and / or electron beam emitters (e-beam emitters) or a combination thereof.
- One or more radiators are to be understood here in particular as one or more radiation sources.
- UV preferably stands for ultraviolet radiation.
- the substrate and / or the first adhesion promoter during the curing and / or during the pre-curing with a wavelength in the range from 250 nm to 410 nm, in particular in the range from 310 nm to 410 nm, and / or in
- Range from 365 nm to 405 nm is irradiated. It is appropriate that the
- the curing device and / or the pre-curing device irradiate the substrate and / or the first adhesion promoter with a wavelength in the range from 250 nm to 410 nm, in particular in the range from 310 nm to 410 nm, and / or in the range from 365 nm to 405 nm.
- liquids are preferred
- Coating materials for example paints, printing inks and / or adhesion promoters, in particular the first adhesion promoter, hardened, which preferably change into a solid state within a few seconds via a chemical reaction.
- paints in particular, a firm and dry film is formed.
- One or more emitters are preferably used as one or more radiators
- Radiation sources used in the form of UV lamps it being possible that the radiation source doped, for example lead, iron, gallium and / or thallium-doped, and / or undoped lamps, for example
- UV-curing lacquers, inks and / or adhesion promoters or adhesives are preferably referred to simply as UV lacquers, UV inks and / or UV adhesion promoters or UV adhesives.
- a mercury vapor high pressure lamp in particular high pressure UV mercury vapor lamp, preferably emits UV radiation, in particular at 254 nm, 296.73 nm, 313 nm, 335 nm, 365 nm (i line) and 405 nm (h line). All other wavelengths are preferably already in visible light and play here
- a medium pressure mercury vapor lamp in particular a medium pressure UV mercury vapor lamp, preferably emits UV radiation, particularly at 250 nm, 313 nm, 365 nm (i-line) and 405 nm (h-line). All other wavelengths are preferably already in visible light and preferably play one here
- wavelengths are also emitted, which preferably have little or no influence on the hardening and / or pre-hardening.
- a low-pressure mercury vapor lamp in particular a low-pressure UV mercury vapor lamp, preferably emits UV radiation, in particular at 254 nm, and preferably has a further emission line at 185 nm.
- gas fillings doped with metal halides or gallium, lead, iron, thallium and indium are available. They supplement the emission spectrum preferably with UV-A and / or blue, in particular to avoid the absorption of UV radiation of shorter wavelengths by color pigments.
- UV-LED lamps as one or more emitters, which in particular have an emission spectrum between 365 nm to 405 nm.
- LED light emitting diode
- they are based on semiconductor compounds that emit energy in the form of ultraviolet radiation or visible light as soon as current flows through an LED in the forward direction.
- Polymerization preferably brought about by the light or the radiation of the LED.
- the polymerization process in a UV LED emitter and / or In principle, the LED system is identical to the known UV technology.
- One difference in particular is that an optimization of the chemistry in the reactivity and the
- Adhesion promoters for coatings or other printing material
- a UV-LED emitter and / or UV-LED system can, for example, be used successfully in the printing device, in particular an offset printing device.
- UV LE preferably means UV low energy and is preferably also referred to as “LE UV”. With a UV-LE radiator and / or an LE-UV system, in particular, immediate drying of the printing ink and / or the adhesion promoter is achieved.
- the substrate can, for example, be processed further immediately and in particular no intermediate storage is required for the drying of the substrate with the adhesion promoter. This also makes it possible to dispense with the use of powder.
- the process reliability is increased and, preferably, the optical quality is increased.
- the adhesion promoter, especially in the substrate is reduced in particular, and particularly good finishing options and, for example, the possibility of producing truncated colored areas and / or truncated adhesion promoter areas are offered.
- an LE UV system requires less space both in comparison to conventional drying systems and to conventional UV systems.
- Extended delivery can be carried out. Furthermore, for example, the space required for a switch cabinet, a cooler and an exhaust air unit is particularly small, in particular less than 2m 2 . In addition, ozone-free operation is possible through the use of special lamps.
- the photoinitiators of the first adhesion promoter are preferably selected according to the wavelengths to which the carrier film is permeable.
- Pre-hardening device comprises cooling, in particular water cooling, and / or is cooled, in particular is cooled by means of water.
- the hardening device and / or the pre-hardening device preferably has one or more shutters and one or more reflectors, which are preferably cooled with water.
- the heat generated is preferably dissipated directly and effectively from the machine.
- the hardening device and / or the pre-hardening device may comprise an integrated air cooling system, which in particular for a uniform operation of the hardening device and / or the
- Pre-hardening device ensures.
- the integrated air cooling preferably ensures uniform operation of the hardening device and / or the
- Pre-curing device in particular the one or more radiation sources, preferably in the form of a UV lamp.
- Has pre-hardening device electronic ballasts Preferably is an ELC control coupled to the irradiation power so that the power, in particular the gross irradiance and / or the net irradiance, preferably within 30% to 100% of the maximum value, can be continuously regulated and / or regulated.
- the regulation takes place, for example, as a function of the printing speed and / or processing speed.
- the power, in particular the gross irradiance and / or the net irradiance is preferably automatically reduced to a minimum.
- the hardening is preferably carried out and / or the hardening device is designed in such a way that the power of the hardening device, in particular the gross irradiance, is in a range from 160 W / cm 2 to 200 W / cm 2 , preferably for mercury vapor lamps, and / or from 12 W / cm 2 to 20 W / cm 2 , preferably for UV-LED lamps.
- the net irradiance is preferably in a range from 4.8 W / cm 2 to 8 W / cm 2 and / or the energy input by the curing device into the first adhesion promoter is in the range from 200 mJ / cm 2 to 900 mJ / cm 2 .
- the curing of the first adhesion promoter is preferably carried out with a
- the necessary energy input is preferably ensured for curing.
- the one or more radiation sources may include a radiation source of the UV unit LAMPcure type.
- Hardening advantageously optimizes the tried and tested system technology with regard to performance and energy consumption. It is possible here for the hardening to be carried out by means of two individual inserts with an output of up to 200 W / cm 2 , in particular gross irradiance and / or net irradiance, of the hardening device is carried out. In this way, the advantage of a significant energy saving can be achieved.
- the pre-curing is preferably carried out in this way and / or the
- Pre-hardening device designed such that the performance of the
- Curing device in particular the gross irradiance, is in a range from 2 W / cm 2 to 5 W / cm 2 .
- the net irradiance is preferably in a range from 0.7 W / cm 2 to 2 W / cm 2 and / or the energy input through the pre-curing device into the first adhesion promoter is preferably in a range from 8 mJ / cm 2 to 112 mJ / cm 2 .
- the first adhesion promoter experiences, in particular, a desired increase in viscosity, while it is preferably not completely cured, so that when the
- Adhesion promoter is retained.
- Pre-curing of the first adhesion promoter is preferably carried out with a
- the necessary energy input for the pre-curing is preferably ensured.
- the viscosity of the first adhesion promoter increases to and / or by 200 mPa * s to 400 mPa * s during pre-curing. Such an increase in viscosity guarantees in particular that the first
- Adhesion promoter is not squeezed when the transfer layer is applied to the substrate, so that the transfer layer preferably essentially remains on the substrate with the resolution achieved during printing of the first adhesion promoter after peeling off.
- the transfer layer is encompassed by a transfer film, the transfer film preferably having the following layers, in particular in the Cross-section in the specified order has: a carrier film, an optional release layer, the transfer layer.
- the transfer layer has one or more of the following layers, in particular in cross-section in the specified order: a protective lacquer layer on a side of the transfer layer facing the carrier film in the transfer film, a replication lacquer layer, a colored lacquer layer, a vapor-permeable lacquer layer, a metal layer , in particular an aluminum layer, an adhesion promoter layer, a barrier layer, an adhesive layer on a side of the transfer layer facing away from the carrier film in the transfer film. It is possible here for the transfer film to be a cold stamping film.
- the transfer film is a first transfer film for use in a cold foil transfer process, comprising a carrier film and a transfer layer that can be detached from the carrier film.
- the transfer layer here comprises, starting from the carrier film, a transparent release layer, an optional transparent protective lacquer layer, at least one decorative layer and at least one primer layer made from a thermoplastic adhesive that can be activated in a temperature range of greater than 90 ° C.
- the first transfer film points in particular on its carrier film
- a primer layer made of a thermoplastic adhesive which when the transfer layer is applied to the substrate, in particular in the form of a cold foil transfer, acts as an adhesion promoter layer to the first adhesion promoter, which is in particular an adhesion promoter that cross-links under UV radiation on the substrate.
- a primer layer made of thermoplastic adhesive arranged on the transfer layer with the first adhesion promoter arranged on the substrate, in particular the first adhesion promoter which cross-links under UV radiation results in a particularly strong one
- Primer layer can be formed. This is a particularly surprising one Effect, since thermoplastic adhesives, preferably also called hot melt adhesives, and the first adhesion promoter, in particular the first adhesion promoter which cross-links under UV radiation, are substances whose adhesive effects are based on completely different chemical-physical principles.
- a first transfer foil as described above for use in a cold foil transfer process is particularly similar in structure to one
- Hot stamping foil In particular, the use of a transfer film in the form of a hot stamping film, which has a carrier film and one removable from the carrier film
- Transfer layer is fixed on a substrate by means of the first adhesion promoter, in particular in the form of a cold adhesive, which is preferably an adhesive that cross-links under UV radiation.
- a cold adhesive which is preferably an adhesive that cross-links under UV radiation.
- hot stamping foils have a hot-melt adhesive layer which is heated during the hot stamping process and - usually with additional application of pressure - in particular forms an adhesive bond with the substrate to be stamped. After cooling, the transfer layer is fixed to the substrate by means of the hot-melt adhesive layer, so that the carrier film
- the transfer film is a second transfer film for use in a cold foil transfer process and comprises a carrier film and a transfer layer that can be detached from the carrier film.
- the transfer layer comprises a transparent polymeric release layer, an optional transparent protective lacquer layer, at least one decorative layer and at least one primer layer.
- the release force is preferred
- Release layer from the carrier film and the force to detach areas from the transfer layer under transfer conditions in particular when the carrier film is peeled off, in total less than the adhesive force between substrate and transfer layer, which is preferred by the type of adhesion promoter used, in particular cold adhesive, and in particular its bond with the substrate on the one hand and the primer layer on the other hand, is influenced.
- the transfer layer or areas of the transfer layer detach from the carrier film and adhere to the substrate, in particular adhere to the substrate in the first area.
- the detachment force of the release layer from the carrier film is preferably so high that safe handling of the transfer film is ensured, preferably without the transfer sheet becoming detached from the carrier film, for example when the transfer film is unwound from a supply roll and / or when transporting the transfer film, optionally over
- Deflection devices for example in the second printing unit and in particular via the curing section and / or in a cold foil transfer unit.
- the release layer is free from wax and / or free from silicone.
- the transfer film does not have a conventional release layer on wax or
- Silicone-based which previously had the effect that transfer layers of transfer foils equipped with them could only be printed to a limited extent or not at all with conventional printing inks, in particular UV-curing printing inks, UV-curing varnishes, hybrid inks or varnishes.
- the use of a release layer based on an acrylate copolymer is particularly preferred for the first and / or second transfer film.
- the release layer preferably has a thickness in the range from 0.01 to 0.3 ⁇ m, preferably from 0.1 to 0.2 ⁇ m. It has proven useful if the at least one primer layer has a thickness in the range from 1 gm to 5 gm, in particular in the range from 1.5 gm to 3 gm.
- the at least one primer layer can be colored, for example to enhance a contrast to the substrate, etc.
- the at least one primer layer which is to adjoin the cold adhesive and / or the first adhesion promoter, has a surface roughness in the range from 100 nm to 180 nm, in particular in the range from 120 nm to 160 nm.
- the surface roughness is determined, among other things, by the application method and the formulation of the primer layer. It was found that a lower surface roughness, but surprisingly also a higher surface roughness of the
- the surface roughness of the primer layer was determined here in particular by means of interference microscopy.
- Primer layers may be present, which differ in their chemical and / or physical properties in order to achieve optimum adhesion in the direction of the adjoining decorative layer and / or the adjoining decorative layers on the one hand and optimal adhesion in the direction of the transfer layer in contact with the other reaching first adhesion promoter, in particular in the form of a cold adhesive, preferably UV adhesive.
- each transfer film possibly only its transfer layer, is suitable for UV radiation in the wavelength range from 250 nm to 400 nm, in particular in the range from 310 nm to 410 nm, and / or in the range from 365 nm to 405 nm a permeability in the range of 5% to 40%, especially in the Range from 5% to 20%. Permeability is to be understood in particular as the degree of transmission.
- the first adhesion promoter preferably in the form of a cold adhesive, preferably based on an adhesive that cross-links under UV radiation, on the substrate, which further improves the adhesion of the transfer layer to the substrate.
- the first adhesion promoter in particular in the form of an adhesive that cross-links under UV radiation, is fully cross-linked and cured and achieves a high adhesive strength, so that the transfer layers applied to the substrate can be detached in the first area with the first adhesion promoter is reliably prevented by the substrate.
- the layer of a transfer film which has the lowest UV permeability of all the layers present is particularly decisive for the UV permeability of a transfer film.
- the carrier film preferably has a thickness in the range from 4.5 gm to 23 gm.
- the carrier film is preferably formed from polyester, polyolefin, polyvinyl, polyimide or ABS.
- the use of carrier films made of PET, PC, PP, PE, PVC or PS is particularly preferred.
- a carrier film made of PET has proven itself.
- the overall thickness of the transfer film is in particular in the range from 6 gm to 25 gm, in particular in the range from 13 gm to 16 gm.
- the transfer layer has a protective lacquer layer.
- the protective lacquer layer provides protection against mechanical and / or chemical stress on the transfer layer on a substrate.
- the protective lacquer layer preferably has a thickness in the range from 0.8 gm to 3 gm, in particular from 0.9 gm to 1.3 gm, and can furthermore be clear, colorless or colored or at least partially colored.
- the at least one decorative layer of the transfer layer is preferably formed by at least one metallic layer and / or at least one dielectric layer. It has proven useful if the at least one decorative layer preferably has a thickness in the range from 8 nm to 1500 nm. This layer has a great influence on the UV light transmission and thus on the
- Curing behavior of the first adhesion promoter in particular in the form of a UV adhesive.
- the metallic layer only has a layer thickness in the range of 10 nm to 20 nm. In this way, good visibility and a decorative effect of the metallic layer are achieved in combination with high permeability for UV radiation.
- the metallic layer is preferably formed from aluminum, silver, gold, copper, nickel, chromium or an alloy comprising at least two of these metals.
- the dielectric layer is in particular formed from at least one material from the group comprising metal oxide, polymer or lacquer.
- the variable x is preferably in the range from 0 to 3.
- HRI High Refractive Index, high refractive index
- diffractive relief structures which are formed in particular in a transparent lacquer layer
- different optical structures can be created depending on the viewing angle Effects, so-called optically variable effects, can be achieved, such as holograms, three-dimensional representations with a kinematic effect depending on the viewing angle, etc.
- a primer layer with a pigmentation number of 1.5 cm 3 / g to 120 cm 3 / g is used, in particular the range from 10 cm 3 / g to 20 cm 3 / g.
- Binder II vinyl acetate homopolymer
- pigment multifunctional silicon oxide mean particle size 3 pm 5 filler micronized amide wax, particle size 3 pm to 8 pm The following applies to the pigmentation number for this primer layer:
- rriBM 120 g binder I + 250 g binder II + (0.5 x 500 g) binder III + 400 g
- Binder IV 1020 g
- the first adhesion promoter comprises UV inks.
- UV inks consist of color pigments and / or dyes and / or additives and photoinitiators.
- UV inks preferably dry in a photochemical process, with photoinitiators under the action of UV radiation triggering curing, in particular curing, or pre-curing of the binders contained.
- a UV ink is almost completely fixed immediately behind the first inking unit and / or immediately after the transfer of the first adhesion promoter to the substrate and a run through the UV radiation of a radiator.
- the UV inks include, in particular, UV-curing systems. UV curing
- Systems include in particular reactive acrylates, epoxides, enol ethers and / or cyclic amines.
- UV-curing systems as binders for
- UV-curing systems comprise unsaturated polyester resins. It is also possible for the UV-curing systems to have photoinitiators and auxiliaries, such as crosslinkers,
- Antioxidants and / or pigments preferably organic colored pigments, carbon black and / or titanium dioxide.
- Photoinitiators preferably form radicals and / or reactive cations, in particular super acids, and induce one upon exposure
- the first adhesion promoter comprises a radically curing UV adhesive.
- the first adhesion promoter is preferably a cold adhesive. As a cold glue
- an adhesive which cross-links under UV radiation in particular a flexographic adhesive, with the following composition (in% by weight):
- the first adhesion promoter further preferably comprises or consists of one or more of the following materials: printing ink, in particular flexographic printing ink,
- Curing component adhesive, in particular UV adhesive, preferably in the form of a radically curing UV adhesive.
- the hardening component which are in particular hardenable by means of irradiation, selected from: UV irradiation, in particular by means of
- an adhesion promoter comprising a UV-LED curing component can be cured, in particular with all systems, in particular all of the systems mentioned.
- Standard UV curing components can only be cured with a standard UV lamp, in particular at high pressure and / or low pressure.
- the first printing unit has a couplable and decoupling first inking unit comprising at least one first inking roller and a first plate cylinder and / or that the second printing unit has a couplable and decoupling second inking unit comprising at least one second inking roller and a second plate cylinder.
- the first printing unit has a couplable and decoupling first dampening unit comprising at least one first dampening roller and / or that the second printing unit has a couplable and decoupling second dampening unit including at least one second dampening roller.
- the first inking unit is preferably in a coupled state of the first
- Inking unit designed such that the first inking unit transfers a second Flaftvermittler to the transfer medium, in particular such that the second
- Flaft mediator is transferred with the first flaft mediator from the transfer medium to the substrate.
- a second flaft mediator is thus preferably transferred to the transfer medium, in particular in such a way that the second flaft mediator is transferred from the transfer medium to the substrate with the first flaft mediator.
- the second flaft mediator is preferably transferred to the transfer medium and / or the substrate in a second area, which preferably partially overlaps and / or does not overlap with the first area.
- the second flaft mediator is subsequently pre-hardened by means of the pre-hardening device and / or is hardened by means of the hardening device.
- the printing device can be flexibly adjusted depending on the requirements for a product to be manufactured.
- the second flaft facilitator can be used and / or if the desired gloss of the transfer film is higher, the first adhesion promoter can be used.
- the advantage is achieved that, due to the above-described effects of the flow and deformation properties of an adhesion promoter on the gloss, various gloss effects, in particular particularly large ones
- the second adhesion promoter in this case is an offset cold film adhesive and / or has non-Newtonian or almost non-Newtonian behavior. This makes, for example, a special
- a printing ink in particular offset printing ink, is transferred to the substrate by means of the first / or second inking unit.
- Printing ink in particular offset printing ink, is transferred to the transfer medium and / or to a printing blanket arranged on the transfer cylinder and is transferred to the substrate with or without the first adhesion promoter.
- first adhesion promoter in the form of a flexographic printing adhesive and / or a flexographic printing ink and the second adhesion promoter in the form of an offset printing adhesive and / or an offset printing ink is transferred to the substrate by means of the first printing unit.
- a printing ink in particular offset printing ink
- the transfer layer is preferably not applied to the substrate by means of the second printing unit.
- Coupling and / or uncoupling is possible in particular in the form of flaring, shifting and / or rotating.
- the first inking unit, the first dampening unit, the second inking unit, the second dampening unit, the anilox roller and / or the chamber doctor blade system are preferably functionless in a decoupled state.
- the first and / or second plate cylinder preferably has a printing plate which has hydrophilic areas that are provided with water by means of the first and / or second dampening unit, such that the hydrophilic areas have a second Flaft mediator and / or an offset color not pick up and / or not transfer to the transfer medium.
- a multifunctional printing press is preferably one with cold embossing and / or cold foil transfer and one without
- Cold stamping and / or cold foil transfer can be used.
- the first and / or the second adhesion promoter and / or a printing ink can advantageously be printed.
- a fully or partially covered and optionally further processed and / or printed substrate with transfer layer is preferably used in the form of wet labels, inmold labels, magazines or as packaging material, such as folding boxes and the like.
- wet labels, inmold labels, magazines or as packaging material such as, for example, folding boxes, and the like are produced.
- Transfer cylinder with a transfer medium in a printing device is expedient, which is characterized in that an offset blanket and / or offset blanket cylinder in the printing device, in particular offset printing device, was removed beforehand, in particular was removed in such a way that the transfer mechanism including the transfer cylinder with the transfer medium the
- Offset cloth and / or the offset cloth cylinder replaced.
- Offset printing device which is characterized in that the method comprises the following steps, which are carried out in the following order in particular:
- Adhesion promoter in such a way that the curing device, in particular in
- FIG. 1 schematically shows a printing device and a
- FIGS. 2a and 2b show schematically a transfer cylinder and a
- 3a and 3b schematically show a substrate in a printing device and a method
- Fig. 4 shows schematically a printing unit
- Fig. 5 shows schematically a transfer mechanism
- FIG. 6a to 6c schematically show an anilox roller
- FIG. 7 schematically shows a printing unit
- Fig. 8 shows schematically a printing device
- FIGS. 10 and 11 a and 11 b schematically show a printing unit
- Figs. 12 to 14 schematically show a printing device and a
- FIGS. 15a and 15b show schematically an inking unit and a dampening unit
- Fig. 1 shows schematically a printing device, which in particular a
- the offset printing device is used to transfer the transfer layer 2 of the transfer film 3 onto the substrate 1.
- the printing device has the first printing unit 4, which is the first
- Transfer mechanism 41 comprising the transfer cylinder 410 with the transfer medium 411.
- the first printing unit 4 also has the first substrate cylinder 412.
- the first transfer unit 41 of the first printing unit 4 is designed in such a way that the first flaft intermediary 5 is transferred from the transfer medium 411 to the first area 11 of the surface of the substrate 1.
- Fig. 1 further shows the method for transferring the transfer layer 2 of the
- Transfer film 3 onto substrate 1 by means of the illustrated printing device which is in particular an offset printing device.
- the method comprises the following step and optionally further steps: Transferring the first adhesion promoter 5 by means of the first printing unit 4, which the first transfer unit 41 comprising the transfer cylinder 410 with the
- the first printing unit 4 also has the first substrate cylinder 412.
- the first adhesion promoter 5 is here transferred from the transfer medium 411 to the first region 11 of the surface of the substrate 1.
- the substrate 1 is here preferably through a gap between the
- the transfer of the first adhesion promoter 5 to the substrate 1 is preferably carried out with a contact pressure, the contact pressure preferably over the distance between the transfer medium 411 and / or the transfer cylinder 410 with the transfer medium 411 and the first substrate cylinder 412, in particular in the form of a gap, is adjustable and / or is set.
- This distance is in particular 0.00 mm.
- this distance is in the range from -0.5 mm to +0.75 mm, preferably in the range from -0.1 mm to +0.3 mm, and / or can be set in this range.
- These negative and positive values relate in particular to a basic setting of the first substrate cylinder 412 relative to the transfer cylinder 410, and in particular relative to the surface of the transfer medium 411, preferably also taking into account the layer thickness and / or thickness of the substrate 1. From this basic setting, the Pressure on the substrate 1 can be reduced, in particular by setting negative values, for example -0.1 mm, and / or increased, in particular by setting positive values, for example +0.3 mm.
- FIG. 2a shows the transfer cylinder 410 with the transfer medium 411, which preferably includes the carrier plate 4111 and the outer layer 4112, which in particular is arranged, has or consists of the side of the carrier plate 4111 facing away from the transfer cylinder 410.
- the transfer medium 411 which preferably includes the carrier plate 4111 and the outer layer 4112, which in particular is arranged, has or consists of the side of the carrier plate 4111 facing away from the transfer cylinder 410.
- FIG. 2b shows the outer layer 4112 in a top view, the transfer medium 411 preferably not being stretched over the transfer cylinder 410, or a schematic development of the outer layer 4112.
- the areas shown in black preferably show raised areas which form one or more motifs.
- the lines of the transfer medium 411 have a line width between 0.1 mm and 0.5 mm in particular.
- the positive and negative fonts can be read up to a font size of 5 pt, especially if the font is from the
- Transfer layer 2 is formed after the carrier film 31 has been peeled off from the transfer layer 2.
- one motif of the several motifs shown has a grid width of 42 lines / cm.
- the transfer medium 411 it is preferably possible for the first adhesion promoter 5 to be transferred to the substrate with a tone value in the range from 35% to 75%.
- the transfer medium 411 has a thickness in the range from 0.5 mm to 10 mm, in particular in the range from 0.76 mm to 6.35 mm, and / or a length in the range from 500 mm to 2000 mm and / or a Width in the range from 500 mm to 1500 mm.
- the thickness is preferably specified at the position at which the maximum thickness of the sum of the thickness of the carrier plate 4111 and preferably the thickness of the outer layer 4112 is located.
- the transfer medium 411 comprises the carrier plate 4111, which in particular comprises or consists of polyester, preferably PET (polyethylene terephthalate), and / or metal, preferably aluminum.
- PET polyethylene terephthalate
- metal preferably aluminum
- Carrier plate 4111 has a thickness in the range from 1.0 mm to 2.0 mm, in particular in the range from 1.0 mm to 1.5 mm, for example a thickness of 1. 16 mm. It is also It is conceivable that the sum of the layer thickness of the carrier plate 4111 and the outer layer 4112 is preferably in the above range.
- the transfer medium 411 in particular the outer layer 4112 of the transfer medium 411, preferably comprises one or more motifs.
- the one or more motifs are preferably introduced into the transfer medium 411, in particular the outer layer 4112 of the transfer medium 411, photochemically, in particular by means of exposure and etching, and / or by means of milling, engraving and / or laser processing.
- the transfer medium 411 and / or the outer layer 4112 of the transfer medium 411 is preferably a lacquer plate from Dupont Cyrel of the EASY FAST EFM 45 type.
- the outer layer has a thickness of 1.14 mm, for example.
- first adhesion promoter 5 it is thus possible for the first adhesion promoter 5 to be transferred over the entire area and / or partially, in particular in the form of one or more patterns and / or motifs, to the substrate 1 in the first area 11 by means of the transfer medium 411.
- the transfer medium 411 preferably has the outer layer 4112, which preferably comprises or consists of a photopolymer.
- Transfer medium 411 comprising a photopolymer, by means of a mask
- Excess polymer is then preferably removed, for example washed out or removed as a powder.
- one or more motifs remain, for example one
- the transfer medium 411 is thus used, for example, for inline and / or offline print finishing with dispersion varnishes, but also, for example, for UV varnishes.
- the Adhesion promoter 5 in particular in the form of a UV flexographic adhesive, an aqueous flexographic adhesive or a solvent-based flexographic adhesive, is transferred to the substrate 1.
- the first adhesion promoter 5 at least in regions with a resolution of a maximum of 150 Ipi, in particular of a maximum of 120 Ipi and / or of a maximum of 59 lines / cm, preferably of a maximum of 47 lines / cm from the transfer medium 411, in particular from the outer layer 4112, is transferred to the substrate 1.
- the transfer medium can be used to achieve the maximum resolution for transferring the transfer layer to the substrate, with the maximum possible gloss of the transfer layer being increased in particular after the transfer.
- the transfer medium 411 in particular the outer layer 4112 of the transfer medium 411, preferably at least one first motif of the one or more motifs, has a grid width of a maximum of 150 Ipi, in particular a maximum of 120 Ipi, and / or a maximum of 59 lines / cm, preferably of a maximum of 47 lines / cm.
- the transfer medium 411 in particular the outer layer 4112 of the transfer medium 411, preferably at least one second motif of the one or more motifs, has a grid width of a maximum of 150 ipi, in particular a maximum of 120 ipi, and / or a maximum of 59 Lines / cm, in particular of a maximum of 47 lines / cm.
- the one or more motifs of the transfer medium 411 in particular the outer layer 4112 of the transfer medium 411, to have one or more lines with a line width in the range of 0.05 mm to 0.9 mm, in particular in the range of 0, 1 mm to 0.15 mm.
- the transfer medium 411, in particular at least one motif of the one or more motifs here has a finest free-standing line of 0.15 mm and / or 6 mil and in particular a smallest free-standing point of 0.15 mm and / or 150 microns .
- the transfer medium in particular at least one motif of the one or more motifs, here, for example, has a relief depth of 0.55 mm.
- the transfer medium 411 in particular the outer layer 4112 of the transfer medium 411, to have a hardness in the range from 50 Shore A to 80 Shore A, in particular from 55 Shore A to 60 Shore A.
- the transfer medium has a hardness of 73 Shore A here.
- the transfer medium 411 in particular the outer layer 4112 of the transfer medium 411, preferably the one or more motifs, have a surface roughness, preferably an Ra value, in the range from 0.05 pm to 1 pm, in particular in the range from 0.2 pm to 0.8 pm.
- the surface of the transfer medium 411, in particular the outer layer 4112, preferably the one or more motifs, is thus advantageously smooth enough to ensure a very good transfer of the first adhesion promoter, in particular with only a slight increase in points.
- the transfer medium 411 further improves, in particular, the ability of the transfer medium 411 to be wetted with the first adhesion promoter. For example, splitting back of the adhesion promoter 5 can largely or completely be avoided. Furthermore, this preferably ensures that the adhesion promoter 5 does not run or drip off the transfer medium 411 in an uncontrolled manner, and excessive chucking forces which act on the substrate are preferably avoided.
- at least one from the following table is used as the transfer medium 411, the finest free-standing line preferably having a width of 0.15 mm and / or the smallest free-standing point having a diameter of 0.15 mm.
- the first transfer mechanism 41 comprising the transfer cylinder 410 with the transfer medium 411 is preferably used in a printing device, in particular used in an offset printing device.
- FIG. 3 a schematically shows a substrate 1 with the adhesion promoter 5 applied thereon in the first region 11.
- FIG. 3b schematically shows a substrate 1 with the first adhesion promoter 5 transferred in the first area 11, as is also sketched in FIG. 1, for example.
- FIG. 3b schematically illustrates the substrate 1 in that shown in FIG.
- Printing device in particular offset printing device, for transferring the transfer layer 2 of the transfer film 3 to the substrate 1, which is the first
- Adhesion promoter 5 transfers to the substrate 1. Furthermore, the transfer of the first adhesion promoter 5 to the substrate 1, which is illustrated in particular by the upper arrow, is shown in the method for transferring the transfer layer 2 of the transfer film 3 to the substrate 1. In addition, the middle arrow schematically shows an optional course of the surface of the transferred
- Adhesion promoter 5 shown.
- the arrows show, in particular, transitions between the schematically illustrated states a), b), c) and / or d).
- State a) shows the substrate in particular before the first adhesion promoter 5 is applied to the substrate 1 and / or to the first substrate cylinder 412 in FIG
- State b) shows in particular the surface of the first adhesion promoter 5 with a certain surface roughness, which is shown here only schematically very rough.
- State c) preferably shows schematically the surface properties of the first adhesion promoter 5 after it has run in an advantageous manner, in particular due to its flow properties and deformation properties.
- the lower arrow shows in particular the application of the transfer layer 2 in FIG
- Transfer film 3 onto the substrate shows the substrate 1 with the first adhesion promoter 5 and the transfer layer 2 subsequently applied to the first adhesion promoter 5, the surface properties of which depend in particular on the
- Pre-curing device is controlled.
- the method is carried out and / or the printing device, in particular offset printing device, is designed in such a way that the transfer layer 2, especially measured after the carrier film 31 of the transfer film 3 has been peeled off, smoothness, in particular measured according to Bekk DIN 53107: 2016-05, preferably with a Bekk Smoothness Tester, preferably of the type 533 from Messmer Büchel, of at least 200 s and / or a surface smoothness, especially measured according to the Parker Print Surf method (PPS), preferably in the
- Air flow method according to DIN ISO 8791-4: 2008-05, preferably using a Parker Print Surf tester PPS 90 from Messmer Büchel, in the range from 0.05 pm to 1.5 pm, preferably in the range from 0.1 pm to 1 pm.
- the method is carried out and / or the printing device, in particular the offset printing device, is designed such that the transfer layer 2, especially measured after the carrier film 31 of the transfer film 3 has been peeled off, has a gloss, in particular greater than 500 GU a measurement geometry of 60 ° and / or greater than 100 GU with a measurement geometry of 85 °, preferably measured with a device of the “micro tri gloss” type from Byk Gardener.
- These measuring devices are used in particular to determine the degree of gloss, preferably of paint coatings, plastics, ceramics and / or metallic surfaces.
- the surface is illuminated in particular at a defined angle and the reflected light is preferably measured photoelectrically, preferably by means of a reflectometer.
- the measuring device corresponds in particular to the standards DIN 67530, ISO 2813, ASTM D 523 and / or BS 3900 Part D5.
- gloss is preferably determined using gloss units or degree of reflection.
- test equipment test equipment, measuring devices and / or measuring methods
- the first adhesion promoter 5 when the first adhesion promoter 5 is transferred from the transfer medium 411 to the substrate 1, there is only slight re-splitting or essentially no re-splitting.
- the amount is kept small in particular.
- a slight split-back has the particular advantage that the surface of the first adhesion promoter 5 is already relatively smooth directly after the transfer.
- the first adhesion promoter 5 has a Newtonian behavior or an almost Newtonian behavior, especially measured in a state before the first adhesion promoter 5 is fed to the first transfer mechanism 41 and / or while the first adhesion promoter 5 is being transferred to the substrate 1 .
- This enables the previously described course in particular.
- a non-Newtonian or almost non-Newtonian behavior would, on the other hand, permit little or no running.
- the viscosity, in particular the dynamic viscosity, of the first adhesion promoter 5 preferably deviates with a tolerance in the range from 50 mPa * s to 250 mPa * s, preferably in the range from 50 mPa * s to 200 mPa * s, preferably in Range from 50 mPa * s to 150 mPa * s, from a constant viscosity, in particular a constant dynamic viscosity, and / or a Newtonian behavior, the constant viscosity, in particular the constant dynamic viscosity, preferably being an average value by which the tolerance values fluctuate.
- the first adhesion promoter 5 has a viscosity, preferably a dynamic viscosity, in the range from 200 mPa * s to 5000 mPa * s, preferably in the range from 500 mPa * s to 1500 mPa * s, in particular measured in one State before the first adhesion promoter 5 is fed to the first transfer mechanism 41 and / or while the first adhesion promoter 5 is being transferred to the substrate 1.
- a viscosity preferably a dynamic viscosity
- dynamic viscosity it can in particular also be an average value around which the tolerance values in particular fluctuate.
- Newtonian behavior or almost Newtonian behavior and such a viscosity therefore have the particular advantage that the surface roughness of the first adhesion promoter 5 can be further reduced after being transferred to the substrate 1 due to the flowability of the first adhesion promoter 5.
- the tack of the first adhesion promoter 5 is preferably improved.
- a viscosity of the first adhesion promoter 5 as described above contributes in particular to such tack.
- the tack is measured in particular as described above.
- the adhesion promoter 5 is, for example, an adhesive of the type WF UV 31 LMI from LEONHARD KURZ founded & Co. KG and / or with the following composition:
- the substrate 1 advantageously has, in particular measured before
- the substrate 1 Transferring the first adhesion promoter 5 to the substrate 1, a surface smoothness, preferably measured in accordance with PPS 10, ISO 8791-4, in the range from 0.5 pm to 2.0 pm, preferably with a tolerance in the range from 0.01 pm to 0 , 2 pm, on. It is also possible that the substrate 1 has a gloss in the range from 20% to 80%, preferably in the range from 50% to 75%, in particular measured according to TAPPI® T480, preferably with the microgloss 75 ° measuring device from BYK Gardener , preferably at an angle of 75 °.
- the substrate 1 preferably has a surface that has been painted at least twice and is as smooth as possible, and is preferably not very absorbent. Furthermore, the substrate 1 preferably has a grammage, in particular a specific weight, between 70 g / m 2 and 350 g / m 2 .
- the substrate 1 is a substrate of the Ensocoat 2S, Invercote G or Performa White type, in particular from Stora Enso and / or Iggesund Paperboard.
- the substrate prefferably processed as sheet goods, four examples being named below.
- first example 10,000 sheets per hour are processed. This preferably corresponds to approximately 7200 m per hour and / or 120 m per minute.
- the substrate 1 with the adhesion promoter 5 is over a distance in the range from 1 m to 1.2 m and / or funded in a period of 0.5 s to 0.6 s.
- a promotion of the application of the transfer layer 2 to the substrate 1 with that in the first region 11 Transferred adhesion promoter 5 for curing and / or to the curing device is preferably carried out over a distance of 0.2 m and / or takes 0.1 s.
- 8000 sheets are processed per hour. This preferably corresponds to approximately 5760 m per hour and / or 96 m per minute.
- the substrate 1 with the adhesion promoter 5 is over a distance in the range from 1 m to 1.2 m and / or funded in a period of 0.62 s to 0.75 s.
- a promotion of the application of the transfer layer 2 to the substrate 1 with the adhesion promoter 5 transferred in the first region 11 for curing and / or to the curing device is preferably carried out over a distance of 0.2 m and / or takes 0.125 s.
- 12,000 sheets per hour are processed. This preferably corresponds to approximately 8640 m per hour and / or 144 m per minute.
- the substrate 1 with the adhesion promoter 5 is over a distance in the range from 1 m to 1.2 m and / or funded in a period of 0.42 s to 0.5 s.
- a promotion of the application of the transfer layer 2 to the substrate 1 with the adhesion promoter 5 transferred in the first area 11 for curing and / or to the curing device is preferably carried out over a distance of 0.2 m and / or takes 0.083 s.
- 20,000 sheets are processed per hour. This preferably corresponds to approximately 14400 m per hour and / or 240 m per minute.
- the substrate 1 with the adhesion promoter 5 is over a distance in the range from 1 m to 1.2 m and / or funded in a period of 0.25 s to 0.3 s.
- a promotion of the application of the transfer sheet 2 to the substrate 1 with that in the first area 11 transferred adhesion promoter 5 for curing and / or to the curing device is preferably carried out over a distance of 0.2 m and / or takes 0.05 s.
- FIG. 4 shows the first printing unit 4 described in FIG. 1, and in particular with the transfer cylinder 410 described in FIGS. 2a and 2b with the transfer medium 411, except that the first transfer unit 41 further comprises the anilox roller 9.
- the anilox roller 9 is preferably designed such that it is the first
- Adhesion promoter 5 is transferred to the transfer medium 411 of the first transfer mechanism 41.
- the anilox roller 9 can be coupled and decoupled, which is shown here by the double arrow. At least the anilox roller 9 is preferably designed to be displaceable and / or rotatable and / or removable.
- the first adhesion promoter 5 is transferred to the transfer medium 411 of the first transfer mechanism 41 by means of the anilox roller 9, in particular the anilox roller 9 being able to be coupled and decoupled.
- the first printing unit 4 shown in FIG. 4 here optionally includes the first inking unit 71, which includes at least the first inking roller 710 and the first
- the first inking unit 71 can preferably be coupled and decoupled, which is shown here by the double arrow. At least the first plate cylinder 711 and / or the first inking unit 71 is preferably designed to be displaceable and / or rotatable and / or removable.
- Coupling and decoupling is to be understood here, in particular, as meaning that a connection with the transfer medium 411 and / or the transfer cylinder 410 can be established and canceled, which allows a transfer of a
- Adhesion promoter in particular the first and / or second adhesion promoter, and / or a printing ink, from the component that can be coupled and decoupled onto the
- Transfer medium 411 allows. This preferably also applies in the case of a first inking unit 71 and / or dampening unit that can be coupled and uncoupled.
- FIG. 5 shows in particular the first transfer mechanism 41 described in FIG. 4, with a chamber doctor blade system 42 also being arranged on the anilox roller 9.
- the first transfer mechanism 4 prefferably comprise a chambered doctor blade system 42, which is designed in such a way that the first flaft intermediary 5 is transferred from the chambered doctor blade system 42 to the anilox roller 9.
- the chamber doctor blade system 42 can preferably be coupled and decoupled together with the anilox roller 9.
- the chamber doctor blade system 42 may include a storage container, not shown in detail here, for the first flaft mediator 5 and a feed system, not shown in more detail here, for the first flaft mediator 5.
- the chamber doctor blade system 42 preferably transfers the first flaft mediator 5 from a chamber to the anilox roller 9 and strips off the first flaft mediator 5 by means of a doctor blade.
- a negative pressure preferably prevails in the chamber doctor blade system 42, which advantageously avoids foaming of the first flaft agent.
- an immersion tub system is also conceivable, preferably with a tub and a immersion roller, the first flaft intermediary 5 being transferred from the tub via the immersion roller to the anilox roller 9 and preferably wiped off on the anilox roller 9 by means of one or more doctor blades.
- FIG. 6a shows an anilox roller 9, as it is also used, for example, in a first transfer mechanism 41 of the figures described above, with an engraving 90.
- the engraving 90 is arranged and / or introduced in particular on the outer surface of the anilox roller 9.
- FIG. 6b shows an example of a section of the lateral surface of the anilox roller 91 with an engraving 90, as described in FIG. 6a.
- Such an engraving preferably has 90 cells 911 and webs 912.
- the cells here preferably receive the adhesion promoter 5, in particular from the chambered doctor blade system 42, and are at least partially emptied when the adhesion promoter 5 is transferred to the transfer medium 411.
- Bars are preferably raised areas on the outer surface of the anilox roller 9.
- Pans are preferably recessed areas on the outer surface of the anilox roller 9.
- the doctor blades of the chambered doctor blade system 42 preferably press on the bars so that the adhesion promoter 5 is stripped off them.
- a counter-rotating doctor blade preferably less often with squeezing pressure
- Anilox roller surface that is to say preferably the webs, is freed from protruding first adhesion promoter 5.
- a defined and thus controllable quantity of adhesion promoter remains only in the depressions, that is to say in particular in the cells.
- the anilox roller 9 transfers the adhesion promoter 5 to the transfer medium 411, preferably in that the depressions are always emptied evenly.
- the emptying is never complete and with each rotation of the anilox roller 9 there is preferably one within the cells
- Adhesion promoter flushing takes place. As a result of the rotation of the anilox roller 9 and the preferably accompanying uniform pick-up and removal of the first
- Adhesion promoter 5 the first transfer mechanism 41 is preferably supplied with a defined and reproducible adhesion promoter volume.
- Fig. 6c shows three wells with the same scoop volume 901, its
- the cells are also referred to as cells, for example.
- the volume of space in the cells below the bridge support is preferably described by the scoop volume.
- the volume specification is in particular a
- Cups 911 located on the anilox roller surface represent an influencing factor for the scoop volume due to their geometry and distribution. They essentially specify, for example, how much amount of a liquid and / or the adhesion promoter 5 is taken up by the anilox roller 9, transported to the transfer medium 411 and onto the Surface of the substrate 1 is released again.
- Printing device in particular offset printing device, can process a wider range of printing inks and / or adhesion promoters.
- the anilox roller 9 has a scoop volume in the range from 10 cm 3 / m 2 to 30 cm 3 / m 2 , in particular in the range from 15 cm 3 / m 2 to 25 cm 3 / m 2 , and / or in the range from 6.45 BCM to 19.35 BCM, especially im
- BCM is preferably the abbreviation for Billion Cubic Micron.
- a BCM corresponds to 1.55 cm 3 / m 2 .
- Application volume is, for example, 22 cm 3 / m 2 and / or 14 BCM.
- Glue density is, for example, 1 g / ml.
- One milliliter (ml) corresponds in particular to one cubic centimeter (cm 3 ).
- One cubic centimeter per square meter (cm 3 / m 2 ) preferably corresponds to 1 ⁇ m of layer thickness. Further details are given in particular in g / m 2 or ml / m 2 .
- the emptying volume and / or application volume from the anilox roller 9 to the first transfer medium 411 preferably corresponds to the application volume of the first adhesion promoter 5 to the substrate 5. It is also expedient that the first adhesion promoter 5, especially measured before, during or after the transfer of the first adhesion promoter 5 to the substrate 1 and / or before the transfer layer 2 is applied to the substrate 1, has a sufficiently high surface tension.
- the screen width of the screen roller 9 is preferably in a range from 20 L / cm to 200 L / cm, in particular in a range from 40 L / cm to 100 L / cm, preferably in a range from 40 L / cm to 80 L / cm.
- this enables the adhesion promoter 5 to be applied over the entire surface to the transfer medium 410, in particular the outer layer 4112 of the
- Transfer medium preferably on one or more motifs, allows.
- the grid width is preferably also referred to as ruling.
- ruling is the ruling
- Grid width for example, 80 L / cm.
- the anilox roller 9 has an engraving angle in the range from 30 ° to 90 °, in particular in the range from 45 ° to 60 °.
- the anilox roller has an engraving angle of 60 °, for example.
- the engraving angle is preferably calculated as an angular position to the roller axis, in particular in a view from above.
- the engraving angle is determined in particular by measuring the angle between a line parallel to the anilox roller axis and a straight line which follows connected webs and / or a connected row of cells.
- the screen roller 9 is, for example, a ceramic screen roller and / or a chrome screen roller. This is the roll blank and / or the base body
- chrome screen rollers preferably have screen finenesses of up to 200 L / cm. It is also conceivable that in particular ceramic screen rollers with a screen width in the range from 500 L / cm to 600 L / cm are used.
- the engraving has, in particular, one or more of the engraving types selected from truncated pyramids, cells, dome, hashour, in particular line structure, hashour with cells and / or hexagonal shape.
- FIG. 7 shows the first printing unit 4 described in FIG. 4, in particular with an anilox roller 9 described in FIGS. 6a to 6c, except that the first printing unit 4 comprises the pre-hardening device 101.
- the first printing unit 4 comprises a pre-curing device 101 which is arranged such that after, in particular immediately after, preferably 0.05 s to 0.2 s after, the transfer of the first adhesion promoter 5 to the substrate 1 and / or before the transfer layer 2 is applied to the substrate 1 with the first adhesion promoter 5 transferred in the first region 11
- Pre-curing device 101 pre-cures the first adhesion promoter 5.
- Fig. 7 thus describes in particular that the first printing unit 4 the
- the pre-curing is preferably carried out in this way and / or the
- Pre-hardening device 101 designed such that the performance of the
- Pre-curing device 101 in particular the gross irradiance, in one Range from 2 W / cm 2 to 5 W / cm 2 .
- the net irradiance is preferably in a range from 0.7 W / cm 2 to 2 W / cm 2 and / or
- the first adhesion promoter 5 is preferably pre-cured with a
- Conveying element comprises such a pre-hardening device and / or in the method the corresponding step of pre-hardening by means of a
- Pre-curing device of the second printing unit is carried out.
- the first adhesion promoter 5 is fixed very quickly after the transfer to the substrate 1 by the pre-hardening, so that undesired running or spreading of the adhesion promoter 5 is largely avoided and the dissolution is maintained as well as possible.
- Fig. 8 shows the first printing unit 4 and the second printing unit 6 and a
- the printing device has a second printing unit 6, in particular which is connected to the first via the conveying element 46
- Printing unit 4 is connected.
- the conveying element 46 preferably conveys the substrate 1, in particular from the first printing unit 4 to the second printing unit 6.
- the transfer layer 2 of the transfer film 3 is preferably applied to the substrate 1 with the first flake mediator 5 in the first area 11.
- the second printing unit 6 optionally has the second inking unit 81, which has the second inking roller 810 and the second
- the second inking unit 81 can preferably be coupled and decoupled.
- the second inking unit and / or dampening unit can be coupled and decoupled, in particular, to be understood as meaning that a connection with the
- Offset printing blanket can be produced and canceled, which a transfer of a flaft mediator 5, in particular the first and / or second flaft mediator, and / or a printing ink, from the couplable and decoupling component to the pressure blanket 621 and / or the pressure cylinder 620 or preferably a
- At least the second plate cylinder 811 and / or the second inking unit 81 is preferably designed to be displaceable and / or rotatable and / or removable.
- the second printing unit 6 preferably has the second transfer unit 62 and the second substrate cylinder 622.
- the second The transfer mechanism includes the pressure cylinder 620 with the pressure cloth 621 and is designed such that the transfer layer 2 is applied from the pressure cloth 621 to the substrate 1 with the first adhesion promoter 5 transferred in the first area 11.
- the method further comprises the following step, in particular after the transfer of the first adhesion promoter 5 to the substrate 1:
- the transfer layer 2 is applied by the pressure cloth 621 to the substrate 1 with the first adhesion promoter 5 transferred in the first region 11.
- the substrate 1 with the first adhesion promoter 5 is passed through a gap between the pressure cloth 621 and the second substrate cylinder 622.
- the pressure of the machine is preferably between 0.0 mm and 0.1 mm. So the pressure cloth is preferred
- the transfer layer 2 it is possible here for the transfer layer 2 to be applied to the substrate 1 with the first adhesion promoter 5 transferred in the first region 11 with a
- the pressure cloth 621 and / or the second one expediently produces
- the contact pressure is preferably adjustable via the distance between the pressure blanket 621 and the second substrate cylinder 622 and / or is adjusted via this distance. This distance is in particular in the range from -0.5 mm to +0.75 mm, preferably in the range from -0.1 mm to +0.3 mm and / or can be set in this range.
- the pressure cloth 621 has a hardness in the range from 50 Shore A to 90 Shore A, in particular in the range from 70 Shore A to 90 Shore A. Furthermore, the pressure cloth 621 preferably has a thickness in the range from 1.5 mm to 2.5 mm, in particular in the range from 1.71 mm to 1.96 mm.
- the pressure pad 621 has the properties from the following table: Thickness in mm 1, 85 1, 71 1, 96 1, 96 1, 96
- FIG. 10 shows in particular the printing unit 6 described in FIG. 9, except that the deflection rollers 91 and the hardening device 100 are also shown here.
- the optional extractor 903 is also shown.
- the second printing unit 6 comprises the hardening device 100 for hardening the first adhesion promoter 5. It is also possible that the following step is carried out, in particular after the first adhesion promoter 5 has been transferred to the substrate 1:
- the curing device 100 is arranged on the second substrate cylinder 622, in particular in such a way that the substrate 1 at Curing the first adhesion promoter 5 is arranged between the curing device 100 and the second substrate cylinder 622.
- the hardening device 100 is arranged on the first substrate cylinder 412 and / or on the conveying element 46, in particular in such a way that the substrate 1 is arranged between the hardening device 100 and the second substrate cylinder 622 when the first adhesion promoter 5 is hardened.
- the curing is preferably carried out and / or the curing device 100 is designed in such a way that the output of the curing device 100, in particular the gross irradiance, is in a range from 160 W / cm 2 to 220 W / cm 2 , preferably for mercury vapor lamps, and / or from 12 W / cm 2 to 20 W / cm 2 , preferably for UV-LED lamps.
- the net irradiance is preferably in a range from 4.8 W / cm 2 to 8 W / cm 2 and / or the energy input by the curing device 100 into the first adhesion promoter 5 is in the range from 200 mJ / cm 2 to 900 mJ / cm 2
- the power, in particular the gross irradiance, of the curing device 100 is preferably in one or more individual batches, in particular in two individual batches, each in a range from 160 W / cm 2 to 200 W / cm 2 , preferably for mercury vapor lamps, and / or from 12 W / cm 2 to 20 W / cm 2 , preferably for UV-LED lamps.
- the curing of the first adhesion promoter 5 is preferably carried out with a
- the curing device 100 cures the first adhesion promoter 5 on a curing section 111 between 10 cm and 60 cm, in particular between 15 cm and 25 cm and / or between 20 cm and 30 cm, in particular where the curing section 111 comprises one or more first deflecting rollers 91, which are designed in such a way that they convey the substrate 1 with the transfer film 3 along the curing section 111.
- the deflecting roller 91 of the pulling device 903 preferably also forms a deflecting roller of the hardening section 111. It is therefore possible for the first adhesion promoter 5 to be on a corresponding
- Curing section 111 is cured, in particular the substrate 1 with the transfer film 3 being conveyed over the curing section 111 by means of one or more first deflecting rollers 91.
- the substrate 1 with the adhesion promoter 5 is conveyed together with the transfer film 3 over a distance in a range from 10 cm to 60 cm, in particular from 10 cm to 40 cm, preferably from 15 cm to 20 cm , in particular before the carrier film 31 of the transfer film 3 is peeled off.
- the first adhesion promoter 5 by means of the curing device 100 after, in particular immediately after, preferably 0.05 s to 0.2 s after, the transfer of the transfer layer 2 to the substrate 1 with the first transferred in the first area 11 Adhesion promoter is hardened.
- the curing device 100 to be designed in such a way that it releases the first adhesion promoter 5 after, in particular immediately after, preferably 0.05 s to 0.2 s after
- Transferring the transfer layer 2 to the substrate 1 with the first adhesion promoter 5 transferred in the first area 11 hardens.
- the periods of time given here are preferably based on the aforementioned examples, preferably with a distance of 0.2 m between the application of the film, in particular the application of the transfer layer to the substrate, and the curing, for example at 8,000 to 20,000 sheets per hour.
- the first adhesion promoter 5 is preferably cured during curing by means of irradiation and is in particular irradiated through the transfer film 3, preferably through the carrier film 31 and / or the transfer layer 2 of the carrier film 31.
- 10 further shows in particular the possibility that the printing device, in particular the second printing unit 6, comprises a pull-off device 903.
- the peeling device 903 is preferably designed in such a way that the carrier film 31 of the transfer film 3 is peeled off, the transfer layer 2 remaining in the first region 11 on the substrate 1.
- Printing unit 6 which comprises peeling device 903, the following step being carried out:
- the transfer layer 2 only remains on the substrate 1 where the first adhesion promoter 5 is transferred and / or is.
- the pulling device 903 has, for example, rollers and / or deflection rollers, for example the deflection roller 91. It is also possible that the pulling device 903 comprises, for example, separating swords.
- the pulling device is designed such that a
- the carrier film of the transfer film 3 is peeled off, the transfer layer 2 remaining on the substrate 1 where the adhesion promoter is applied to the substrate 1, and the transfer layer 2 with the carrier film 31 is peeled off where no adhesion promoter is applied to the substrate 1.
- the hardening device 100 in particular in the conveying direction of the substrate 1, is arranged in front of the pull-off device 903 and / or after the first transfer mechanism 41, in particular the transfer medium 411.
- the hardening in particular in the conveying direction of the substrate 1, is carried out before the transfer film 3 is pulled off and / or after the first adhesion promoter 5 has been transferred to the substrate 1.
- FIG. 11 a shows the second printing unit 6 described in FIG. 10, except that a deflection device 21 with two deflection stations 22 is also shown, as well as the supply roll 30 and the take-up roll 300.
- the second printing unit 6 may include a deflection device 21 with one or more deflection stations 22.
- the deflecting device 21 is designed in such a way that the transfer layer 2 is passed through once or repeatedly between the pressure cylinder 620 and the second substrate cylinder 622.
- the transfer layer 2 is applied to the substrate 1 once or repeatedly and / or the carrier film 31 of the transfer film 3 is at least partially removed once or repeatedly and the transfer layer 2 remains at least partially on the substrate 1 with the first adhesion promoter 5 in the first Area 11.
- the second printing unit 6 comprises a deflection device 21 with one or more deflection stations 22, wherein by means of the
- the transfer layer 2 is passed through one or more times repeatedly between the pressure cylinder 620 and the second substrate cylinder 622, in particular wherein the transfer layer 2 is repeatedly applied to the substrate 1 once or several times and / or the carrier film of the transfer film is at least partially removed one or more times will and the
- the transfer layer remains at least partially on the substrate 1 with the first adhesion promoter 5 in the first region 11.
- the deflection device 21 is behind the in the conveying direction
- the carrier film 31 of the transfer film 3 is preferably peeled off from the substrate, the transfer layer 2 remaining in the first area 11 on the substrate with the first adhesion promoter 5 and the transfer layer 2 with the carrier film 31 being peeled off the substrate 1 outside the first area .
- the transfer layer 2 is then laterally displaced by the deflection device 21, the peeled off with
- Transfer layer 2 can thus be recycled.
- FIG. 11 b shows, by way of example, a top view of one of the ones shown in FIG. 11 a
- the deflection devices preferably comprise one or more deflection stations 22, which for example comprise two or more further deflection rollers, of which at least two further deflection rollers 92 are arranged parallel to one another and at an angle, in particular not equal to 0 °, preferably at an angle of 45 ° , in particular in relation to the main direction of movement of the transfer layer 2, are arranged.
- the transfer film 3 is preferably unwound from the supply roll 30, between the
- Pressure cylinder 620 with the pressure blanket 621 and the second substrate cylinder 622 is drawn in and then transported with the substrate 1 so far that the first adhesion promoter 5, in particular through the transfer film 3, can be cured. Then the transfer film 3 is returned by means of guide rollers 92 and again drawn into the gap, in particular also called the printing gap, between the pressure cylinder 620 with the pressure blanket 621 and the second substrate cylinder 622.
- the substrate cylinder 622 is advantageously applied to the substrate 1 offset transversely to the conveying direction, in particular with respect to the position of the transfer layer 2 when the transfer layer 2 was previously applied to the substrate 1. In others In words, a lateral displacement of the transfer layer 2 is thereby preferably carried out.
- transfer film 30 it is advantageous to return the transfer film 3 up to twice and apply the transfer layer 2 again from the transfer film 3 to the substrate.
- transfer layer 2 For example, three lanes can be covered with transfer layer 2.
- two supply rolls 30, each with a transfer film 3, to be used.
- both transfer foils 3 of the two supply rolls 30 to be returned once. This can then be used to decorate four strips with transfer layer 2.
- four webs, namely two webs each from one of two transfer layers, are applied to the substrate 1 with the first adhesion promoter 5
- the two transfer films 3 are each returned once, and thereby in particular four times a web of a transfer layer 2 remains on the substrate 1 when at least the carrier film 31 is pulled off and / or deflected.
- This method and this device are particularly advantageous since the transfer film is used optimally, especially when only small areas are decorated, such as when decorating packaging. It is also possible here for the transfer layer to be applied several times to one or more substrates.
- FIG. 12 shows a printing device with the second printing unit 6 described in FIG. 10 and the first printing unit 4 described in FIG. 7, which are preferably connected to one another via the conveying element 46.
- the substrate is preferably transferred from the first printing unit 4 to the second via the conveying element 46
- Printing unit 6 promoted.
- the conveying element 46 is a conveying path for conveying the substrate 1, in particular the substrate 1 being in the form of Rolled goods are processed. It is also possible that the conveying element 46 is a drum, in particular with substrate holders, for conveying the substrate 1, in particular wherein the substrate 1 is processed in the form of sheet goods. It is also possible that the conveying element 46 comprises further structural elements in addition to the drum, for example a plurality of drums, guide elements or other structural devices, which in particular can be driven or not driven.
- the curing device 100 is on the second substrate cylinder 622
- the substrate 1 is arranged between the curing device 100 and the second substrate cylinder 622 during the curing of the first adhesion promoter 5.
- FIG. 13 shows the printing device described for FIG. 10, the pre-hardening device 101 also being shown, for example, for FIG. 7.
- the hardening and / or the pre-hardening is carried out by means of irradiation selected from the group: UV irradiation, in particular by means of high pressure UV mercury vapor lamps, medium pressure UV mercury vapor lamps, low pressure UV mercury vapor lamps, UV low Energy and / or UV-LED, and / or electron beams (e-beam) or a combination thereof.
- irradiation selected from the group: UV irradiation, in particular by means of high pressure UV mercury vapor lamps, medium pressure UV mercury vapor lamps, low pressure UV mercury vapor lamps, UV low Energy and / or UV-LED, and / or electron beams (e-beam) or a combination thereof.
- the curing device expediently comprises 100 and / or the
- Pre-curing device 101 preferably one or more lamps selected from the group: UV lamps, in particular high pressure UV mercury vapor lamps, medium pressure UV mercury vapor lamps, low pressure UV mercury vapor lamps, UV low energy and / or UV LED, and / or
- lamps selected from the group: UV lamps, in particular high pressure UV mercury vapor lamps, medium pressure UV mercury vapor lamps, low pressure UV mercury vapor lamps, UV low energy and / or UV LED, and / or
- Electron beams e-beam or a combination thereof.
- Pre-hardening device 101 the substrate 1 and / or the first adhesion promoter 5 with a wavelength in the range from 250 nm to 410 nm, in particular in the range from 310 nm to 410 nm, and / or in the range from 365 nm to 405 nm.
- Adhesion promoter 5 is irradiated in the curing and / or in the pre-curing with a wavelength in the range from 250 to 410 nm, in particular in the range from 310 nm to 410 nm, and / or in the range from 365 nm to 405 nm.
- FIG. 14 shows the printing device described in FIG. 13, except that the deflection device 21 as described in FIGS. 11 a and 11 b with the
- FIGS. 15a and 15b show the first and second inking units 71, 81.
- the first inking unit 71 is connected to the first dampening unit 72, in particular via the at least one first dampening roller 720.
- the first inking unit 71 has in particular a plurality of first inking rollers 710, a first inking fountain 713 and an optional doctor blade 714.
- the second inking unit 81 is connected to the second dampening unit 82, in particular via the at least one second dampening roller 820.
- the second inking unit 81 has in particular a plurality of second inking rollers 810, a second inking fountain 813 and an optional doctor blade 814.
- the second inking unit 81 is in a decoupled state, it is also possible that the second printing forme 812 is not arranged on the second plate cylinder 811. If the first inking unit 71 is in a decoupled state, it is also possible that the first printing forme 712 is not arranged on the first plate cylinder 711.
- first inking unit 71 which can be decoupled, comprising at least one first inking roller 710 and has a first plate cylinder 711 and / or that the second printing unit 6 has a couplable and decoupling second inking unit 81 comprising at least one second inking roller 810 and a second plate cylinder 811.
- the first printing unit 4 is a couplable and
- first dampening unit 72 comprising at least one first dampening roller 720 and / or that the second printing unit 6 has a couplable
- decoupling second dampening unit 82 comprising at least one second
- the first dampening unit 72 can preferably be coupled and decoupled from the transfer cylinder 410 and / or the transfer medium 411 together with the first inking unit 71.
- the second dampening unit 82 can preferably be coupled and decoupled together with the second inking unit 81 from the pressure cylinder 620 and / or a printing blanket, in particular arranged on the pressure cylinder 620.
- the first inking unit 71 is designed in a coupled state of the first inking unit 71 in such a way that the first inking unit 71 transfers a second flaft agent to the transfer medium 411. It is therefore possible for a second flaft mediator to be transferred to the transfer medium 411 by means of the first inking unit 71 in a coupled state of the first inking unit 71.
- Flaft mediator 5 is transferred from the transfer medium 411 to the substrate 1.
- the second flaft intermediary is preferably transferred to the transfer medium and / or the substrate in a second area which partially overlaps and / or does not overlap with the first area.
- the second flaft mediator it is also possible here for the second flaft mediator to be pre-hardened by means of the pre-hardening device 101 and / or to be hardened by means of the hardening device 100.
- One advantage is achieved in particular that the printing device can be flexibly adjusted depending on the requirements for a product to be manufactured. For example, using a more absorbent substrate 1, the second
- Adhesion promoters can be used and / or if the desired gloss of the transfer film 3 is higher, the first adhesion promoter 5 can be used.
- the advantage is achieved that due to the above-described effects of the flow properties and deformation properties of a
- Adhesion promoter on the gloss different gloss effects, in particular with particularly large gloss differences, in different areas of the
- the second adhesion promoter here is an offset cold film adhesive and / or has non-Newtonian or almost non-Newtonian behavior. In this way, for example, a particularly attractive visual appearance is generated and / or the
- a printing ink in particular offset printing ink, is transferred to the substrate 1 by means of the first and / or second inking unit 71, 81.
- a printing ink in particular offset printing ink, to be transferred to the transfer medium 411 and / or to a printing blanket arranged on the transfer cylinder 410 by means of the first inking unit 71 and to be transferred to the substrate 1 with or without the first adhesion promoter 5.
- first adhesion promoter 5 in the form of a flexographic printing adhesive and / or a flexographic printing ink and the second adhesion promoter in the form of an offset printing adhesive and / or an offset printing ink is transferred to the substrate 1 by means of the first printing unit 4.
- the second inking unit 81 in particular the second printing forme 812, for example a printing ink, in particular offset printing ink, is applied to a Transferring the printing blanket arranged to the pressure cylinder 620, it also being conceivable that the transfer layer 2 is not applied to the substrate 1 by means of the second printing unit 6.
- the second printing forme 812 for example a printing ink, in particular offset printing ink
- FIG. 16 schematically shows a cross section through a transfer film 3 with a carrier film 31, a transfer layer 2 and an optional release layer 32.
- the carrier film 31 is preferably a PET film, preferably with a thickness of 12 ⁇ m.
- FIG. 17 shows the transfer film 3 described in FIG. 16, the transfer layer 2 having a protective lacquer layer 33, a metallization 34 and an adhesive layer 35, in particular a flaft mediating layer 35.
- the carrier film 31 is coated with the release layer 32 and the protective varnish 34 and the protective varnish layer in a floch vacuum with metal to form the Metallization 34, in particular aluminum, vapor-deposited.
- the adhesive layer 35 is then applied to the metallization 35, in particular which, when the transfer layer 2 is applied to the substrate 1, forms a bond with the substrate.
- further layers in particular can be arranged, for example further adhesion promoter layers, vapor-depositable layers, barrier layers and / or colored lacquer layers.
- the transfer layer 2 is preferably encompassed by the transfer film 3, which has the following layers, and in particular has these in cross section in the specified order: the carrier film 31, the optional release layer 32, the transfer layer 2.
- the transfer layer 2 preferably has one or more of the following layers, in particular in cross section in the specified order: a protective lacquer layer 33 on a side of the transfer layer 2 facing the carrier foil 31 in the transfer foil 3, a replication lacquer layer, a colored lacquer layer, a vapor-coated lacquer layer, a metal layer 34, in particular one
- Transfer layer 2 It is thus possible, for example, for the transfer film 3 to be a cold stamping film.
- the carrier film 31 is removable from the
- a cold transfer film from LEONHARD KURZ Stainless & Co. KG is used as the transfer film, which in particular has a transfer layer with at least one lacquer layer that can be vaporized, one vapor-deposited onto it
- the transfer layer 2 can also have further layers, such as a release layer, at least one protective layer, barrier layers, colored layers, further adhesive layers, further adhesion promoter layers.
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019119535.7A DE102019119535A1 (de) | 2019-07-18 | 2019-07-18 | Verfahren und Vorrichtung zum Übertragen einer Transferlage einer Transferfolie auf ein Substrat |
| PCT/EP2020/069021 WO2021008923A1 (de) | 2019-07-18 | 2020-07-06 | Verfahren und vorrichtung zum übertragen einer transferlage einer transferfolie auf ein substrat |
Publications (1)
| Publication Number | Publication Date |
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| EP3999343A1 true EP3999343A1 (de) | 2022-05-25 |
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| EP20737163.4A Withdrawn EP3999343A1 (de) | 2019-07-18 | 2020-07-06 | Verfahren und vorrichtung zum übertragen einer transferlage einer transferfolie auf ein substrat |
Country Status (6)
| Country | Link |
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| US (2) | US20220266586A1 (de) |
| EP (1) | EP3999343A1 (de) |
| JP (1) | JP7724764B2 (de) |
| CN (1) | CN114126875B (de) |
| DE (1) | DE102019119535A1 (de) |
| WO (1) | WO2021008923A1 (de) |
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| CN117203396A (zh) * | 2021-04-25 | 2023-12-08 | 宝洁公司 | 包装材料及其制备方法 |
| DE102022103957A1 (de) | 2022-02-18 | 2023-08-24 | Constantia Pirk Gmbh & Co. Kg | Verbund zum Verpacken von Nahrungsmitteln und Verfahren zu dessen Herstellung |
| TWI852537B (zh) * | 2023-05-08 | 2024-08-11 | 光群雷射科技股份有限公司 | 全像膜之對位成形方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2672008B1 (fr) * | 1991-01-29 | 1994-09-02 | Cros Jean Pierre | Materiau pour impression et procede et installation d'impression au moyen de ce materiau. |
| DE4110801C1 (de) * | 1991-04-04 | 1992-05-27 | Kurt 4040 Neuss De Lappe | |
| DE502005008481D1 (de) * | 2004-04-13 | 2009-12-24 | Manroland Ag | Unterlage für prägevorrichtung |
| JP2007532354A (ja) * | 2004-04-13 | 2007-11-15 | エム・アー・エヌ・ローラント・ドルックマシーネン・アクチエンゲゼルシャフト | エンボス装置 |
| CN101111380B (zh) * | 2005-02-04 | 2012-03-07 | 曼罗兰公司 | 用于压印装置的薄膜导向装置 |
| EP1700694A3 (de) * | 2005-03-10 | 2010-03-17 | manroland AG | Prägeverfahren für Wellpappe in einer Bogendruckmaschine und entsprechende Einrichtung |
| JP4647444B2 (ja) * | 2005-09-16 | 2011-03-09 | 東京応化工業株式会社 | フレキソ印刷版用水溶性感光性樹脂組成物および水溶性感光性フレキソ印刷原版 |
| DE102006015474A1 (de) * | 2006-03-31 | 2007-10-04 | Heidelberger Druckmaschinen Ag | Folientransferwerk mit integrierter Weiterverarbeitungseinrichtung |
| WO2007134919A1 (de) * | 2006-05-23 | 2007-11-29 | Koenig & Bauer Aktiengesellschaft | Farbwerk einer rotationsdruckmaschine mit einer filmwalze |
| DE102008047095A1 (de) * | 2008-09-12 | 2010-03-18 | Leonhard Kurz Stiftung & Co. Kg | Transferfolie zur Verwendung in einem Kaltfolientransferverfahren |
| US8551688B2 (en) * | 2011-04-21 | 2013-10-08 | Ryan W. Vest | Photosensitive resin laminate and thermal processing of the same |
| DE102011112487A1 (de) * | 2011-05-25 | 2012-11-29 | Heidelberger Druckmaschinen Aktiengesellschaft | Druckverfahren und Offset-Druckwerk |
| DE102011054222A1 (de) * | 2011-10-06 | 2013-04-11 | Peter Barth | Folienprägeverfahren sowie Vorrichtung dafür |
| ES2402151B1 (es) * | 2011-10-17 | 2014-02-28 | Miquel Y Costas & Miquel, S.A. | Procedimiento de impresión monocapa de papel para artículos de fumar. |
| US20140020582A1 (en) * | 2012-07-19 | 2014-01-23 | Kurt M. Sanger | Embedding data with offset printing |
| JP2015123714A (ja) * | 2013-12-27 | 2015-07-06 | 富士フイルム株式会社 | レーザー彫刻用樹脂組成物、レーザー彫刻型フレキソ印刷版原版及びその製造方法、並びに、フレキソ印刷版の製版方法 |
| JP2016088040A (ja) * | 2014-11-11 | 2016-05-23 | 株式会社小森コーポレーション | 箔転写装置 |
-
2019
- 2019-07-18 DE DE102019119535.7A patent/DE102019119535A1/de active Pending
-
2020
- 2020-07-06 EP EP20737163.4A patent/EP3999343A1/de not_active Withdrawn
- 2020-07-06 JP JP2022502822A patent/JP7724764B2/ja active Active
- 2020-07-06 US US17/627,246 patent/US20220266586A1/en not_active Abandoned
- 2020-07-06 WO PCT/EP2020/069021 patent/WO2021008923A1/de not_active Ceased
- 2020-07-06 CN CN202080051916.3A patent/CN114126875B/zh active Active
-
2024
- 2024-11-07 US US18/939,725 patent/US20250128510A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP2022541037A (ja) | 2022-09-21 |
| US20220266586A1 (en) | 2022-08-25 |
| JP7724764B2 (ja) | 2025-08-18 |
| WO2021008923A1 (de) | 2021-01-21 |
| CN114126875A (zh) | 2022-03-01 |
| CN114126875B (zh) | 2024-09-17 |
| DE102019119535A1 (de) | 2021-01-21 |
| US20250128510A1 (en) | 2025-04-24 |
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