EP1321919A2 - Adhesive label, method of manufacture and its utilisation - Google Patents

Abstract

A first printing material layer (1) is coated on one side with an adhesive compound (2) and the latter is covered by a protective release film (3). Printing ink (11,12) is applied onto the side of the printing layer facing the adhesive and also on the other side of the printing layer. <??>Independent claims are made for: <??>(1) a use of the claimed label on packaging, e.g. tubes, cans, bottles, saucepans of glass, plastic or metal; <??>(2) a process for manufacturing labels in which print is applied to both sides of the printing layer in a single operation, a self adhesive coating is applied onto a release coating of a carrier strip and the latter and printed layer are laminated together.

Description

The invention relates to self-adhesive labels, methods of manufacture this as well as their use.

Labels usually consist of several layers, for example one Printing material on which a self-adhesive coating is applied, as well as one Support material.

The carrier material is usually provided with a silicone separating layer. It has the task of carrying the actual label during its manufacture and its Protect adhesive layer from contaminants so that there are processing processes such as printing, punching, cutting, perforating etc. When punching The self-adhesive labels use the siliconized material as a punching pad. As Backing materials can be selected from release papers or various release films.

A common backing material for self-adhesive labels is satined kraft paper. Coated papers are also used. For special requirements, insensitivity to moisture, for example plastic-coated paper used. Furthermore special products are like carbonless backing papers available.

Plastic films are primarily chosen as the carrier material if the later one Application makes special demands. Should be a self-adhesive label for example imitating the appearance of a directly printed container (no-label look), adhesive bond manufacturers often recommend siliconized films that are highly transparent and are extremely smooth.

Cellulose that is bleached either conventionally or chlorine-free can serve as the basis for silicone paper. Release papers are available in different colors. They are used in different grammages and thicknesses. The palette ranges from very thin papers to materials in cardboard thickness.
When selecting the carrier material, the factor separating behavior is mainly taken into account. Important characteristics for release paper are tear strength, resistance to punching, tensile strength, dimensional stability, etc. They must be tailored to the requirements of processing processes and manual or automatic dispensing of the labels.
The separation behavior can be influenced by the type of silicone coating and can therefore be set for different purposes. This plays a major role in the further processing of self-adhesive labels with automatic dispensers. Trouble-free and quick dispensing makes the self-adhesive label economically superior.

A special form of self-adhesive labels are the so-called strapless systems. They do without siliconized release papers or foils. A particular advantage of this label form is that there is no backing material accumulates as waste after application. Due to the lack of a carrier, however the choice of labels is limited to rectangular shapes, since die-cutting is not possible without a carrier. The self-adhesive label is only cut off in Labeling device instead.

Self-adhesive labels are used in very different applications and meet an extraordinarily wide range of different requirements. This is made possible by a selection of materials that are used in the label industry is more diverse than in any other branch. Therefore, for processing too Production resources are necessary that are equally versatile in their possibilities. The explains why all those available in practice for label production Procedures are used. In this context, the Printing on the self-adhesive labels. The following overview of the different Printing technologies with a description of the respective basic principle make this easier Understanding of the possibilities in common printing processes such as letterpress, Flexographic printing, offset printing, screen printing or gravure printing, as well as in the so-called non-impact printing techniques or the digital process.

The letterpress and flexographic printing processes are subsumed under high pressure.

Letterpress printing can be seen as the classic process of duplication in printing become. It was - as the name expresses - already in the Middle Ages Mainly used for the production of books.

All conventional printing processes require a printing form, also called a printing medium, which consists of printing and non-printing parts. In letterpress printing, the printing form is often referred to as a cliché. Today, photopolymer letterpress plates have almost completely replaced the etched or electroplated clichés of the past. Because the raised areas of the cliché represent the printing surfaces, letterpress printing is one of the high-pressure processes. The printing parts are inked using an inking unit consisting of a series of rollers. They create a thin film of color and thus color the raised areas of the cliché. The ink is transferred directly from the printing form to the substrate under a certain pressure.

Flexographic printing is also one of the high-pressure processes. A difference to letterpress is the printing form, which is much more elastic. This means that less contact pressure is required to transfer the motif directly from the printing form to the substrate. This is an important reason for the wide range of materials that can be printed using the flexographic printing process.
The processes also differ in terms of the colors, which have a rather viscous consistency in letterpress printing, while flexographic printing inks are much more fluid. The inking units have a correspondingly simple structure. The flexo clichés are colored using anilox rollers. They have depressions in the surface of the roller that transport a defined amount of ink. They are filled either via an immersion roller, which rotates in an ink pan, or via an ink chamber, which is placed on the anilox roller.

A specialty in the flexographic printing process is the printing with radiation-curing inks. While solvent- or water-based printing inks dry physically, in UV-flexographic printing the inks or varnishes are polymerized by the action of UV rays. The hardening reaction takes place in fractions of a second. This reduces the process-typical appearances of flexographic printing that arise from the elastic printing form, such as pinched edges or high dot gain.
At the same time, it also makes it easier to print on difficult materials such as plastics, metallized foils, etc.

The processes of offset printing (wet offset) and waterless printing are used under planographic printing Offset printing subsumes.

Offset printing is one of the flat printing processes. Printing and non-printing areas are almost on one level. Offset is an indirect printing process. The ink is first deposited on a blanket from the printing form and from there on the printing material. This is where the name of this process comes from. The separation of the printing and non-printing areas is based on the principle that fat and water repel each other. The printing areas of a metallic offset printing plate are prepared so that they are hydrophobic (water-repellent) and thus take on the greasy printing ink. The remaining areas remain hydrophilic (water-friendly). Both water and ink are fed to the offset plate for printing. An inking unit is used for inking, which is very similar to that of a letterpress machine. Wetting the plate surface with water is done with the help of a dampening system.
If the ink-water balance is set correctly, there is a sharp separation of the printing and non-printing areas. This enables a precise print image and is particularly important for raster gradients or very fine elements.

With waterless offset printing, the plates are not dampened. To one To prevent the non-printing parts from being colored on the offset plate, these must be included a color-repellent silicone layer, which is part of the development of the plates the places that will later lead to color. As a result, the printing parts in waterless offset printing are slightly lower. In practice, thus achieve a very high color density and at the same time a very pointed and Print a sharp dot.

A method that is rarely used for printing self-adhesive labels is gravure printing. It developed from old techniques of reproduction such as etching or copper engraving. Similar to these artistic processes, the printing areas are also etched or engraved in a printing form cylinder in gravure printing.
To color the cylinder, it runs in an ink tray from which the very thin gravure ink is drawn. Excess paint is wiped off with a polished steel bar, the so-called squeegee. Gravure printing is known for high-quality image reproduction and consistent print quality. Typical areas of application are therefore the areas of catalog and magazine printing as well as the production of packaging. This method is particularly suitable for long runs in label production.

The processes of flat screen printing and rotary screen printing are screen printed subsumed.

Screen printing owes its name to the principle of the process, which consists in Press the color through a fine mesh sieve onto the material to be printed. As The printing form is a mesh made of metal, textile or plastic threads. To a To create a printed image, the fabric meshes with a copyable Coating closed. After appropriate exposure, this layer is attached to the washed out unexposed areas. When printing, the color is changed using a Squeegee pressed onto the substrate through these open meshes. A major advantage of Screen printing is the high layer thickness in which the color can be applied. The opens the use of a wide range of special colors or special lacquers in the Screen printing process.

In label printing, screen printing is used in two different process variants. The differences result from the structure of the printing form. In flat screen printing, it is formed by a frame that is covered with a fabric. The label web is fed under the flat screen for printing, stopped and printed. The web is then transported on by a print image so that the next printing process can take place.

A stainless steel mesh is used for rotary screen printing, which is formed into a hollow cylinder. The ink supply and the doctor blade are arranged in the interior of this cylinder. Due to the rotary structure, a continuous printing process is possible with this process.

Technical labels are used in many areas for high quality applications, as type plates for vehicles, machines, electrical and electronic devices, as control labels for process flows as well as guarantee and test badges. frequently these applications inherently involve the requirement for a more or less pronounced level of security against counterfeiting. This security against counterfeiting applies primarily for the period of attachment and the entire useful life on the to characteristic part. Removal or manipulation should only result in destruction or visible, irreversible change. In particularly sensitive fields of application a security level must also apply to the manufacture of the labels. Too easy procurement and labeling of such labels and production Plagiarism would prevent unauthorized persons from unauthorized distribution of articles enable.

For the rational and variable production of high quality labels, technical-industrial applications the laser marking of suitable base material through more and more. DE G 81 30 861 is a multi-layer label described, in which a different colored cover layer is removed by the laser beam and thus the color contrast to the next layer of high quality lettering and Readability enables. This label is a kind of engraving, with manipulation possibilities like with traditional printing with colors and No inks. In DE G 81 30 861 the label film is inserted through the Raw materials and the manufacturing process so brittle that removal of the glued labels from the adhesive substrates is only possible with destruction.

An additional security level is in the single-layer laser label according to DE G 94 21 868 describes: in addition to the advantageous properties of DE G 81 30 861 here the inscription not by engraving in the top layer, but by a Color change in the plastic layer itself causes subsequent manipulations the labels largely prevented.

The only potential gap in the security chain is that such Single and multilayer labels for laser marking are freely accessible. For accordingly High quality goods could thus be sourced from the labels and lettering to be regarded as possible and worthwhile even with expensive laser units.

In order to remedy this, the continuous development tries to To design label material for later labeling so that it can always be used as authentic original material with little effort and non-destructive identify is. For the laser labels already named, there is a subsequent one Identification is also possible in principle, but with an unacceptable analytical one Effort and not non-destructive.

Known for particularly security-related goods such as banknotes, checks, checks and Personal identification cards etc. are various procedures to prevent counterfeiting to ensure. In addition to watermarks, printing with filigree patterns, application Holograms also occasionally use "invisible" markings.

JP 08/328474 A1 describes a textile clothing label which is attached to the top printed in a transparent, fluorescent color, with woven design and Print image should be approximately congruent. A similar superficial print with UV-active, photochromatic inks is described in WO 88/01288 A1; however, an additional protective layer is required to protect the chemicals in this colored layer against oxygen and water necessary.

In FR 2,734,655 A1, security marking for checks is achieved by that the printing under an IR-transparent layer is partially invisible in the visible However, the wavelength range can be machine-identified / identified with special IR light is.

In EP 0 727 316 A1 concealed security against forgery is achieved in that in an extra layer specifically on paper, two reactive components are present that result in a color reaction under pressure - but this is irreversible.

The use of electrically conductive or magnetic paints Printing on the surface are in JP 08/054825 A1 and CN 1,088,239 A1 described. Such systems are for label applications on complex Metal parts such as vehicle and machine parts are only severely restricted operational.

The ribbons with fluorescent particles described in JP 07/164760 A1 IR-excitable are transferred by heat with thermal transfer printers. The Although prints contain a hidden tamper-evident identifier, the printing is superficially applied with solvents, heat as well as mechanically removed or variable.

In DE 42 31 800 A1, labels are described which are used to prevent counterfeiting non-removable traces on the surface using sublimation colors or corrosive substances Leave the grounds behind - but the traces can only be identified after removal of the label, which is often undesirable or impossible.

EP 0 453 131 A1 describes highly secured papers such as passports, shares, bank notes etc. described that in an intermediate layer between two permanently bonded layers Paper with the laminating adhesive fluorescent, especially UV fluorescent indicators be incorporated, which are only detectable when transmitting light of a suitable wavelength through the laminate, but not through reflection in reflected light. This system is for applications where a transmission of light through the glued label is not possible and unsuitable for the completely opaque laser labels.

All of these methods are or are superficially applied superficially effective and therefore not or only to a very limited extent for the known ones Laser labels can be used, since they are used here, for example, for nameplate applications high quality and extremely resistant surface changed and deteriorated would. Such a modification would be particularly disruptive for those considered technical Standard for type plates two-layer labels with high gloss black top layer and white base layer stand out. They also include State of the art subsequently applied superficially Counterfeit security the potential, mechanically or using heat, Chemicals etc. to carry out manipulations.

The usual printing methods in label printing have already been set out in detail above Service.

In the normal case, labels are produced in such a way that directly on the printing material (paper or foil, for example 60 µm PP or 100 µm PE) is printed (frontal printing).

Such labels can also be covered with a laminating film (for example 12 µm PP) cover up to protect the print. This is described, for example, in DE 197 47 000 A1. In particular, a path is found there that allows variable and a cost-effective, customized security marking at the level of Install label stock. Especially when using the standard label film according to DE G 81 30 861 or DE G 94 21 868 is on the back of the film in front of the Coating with adhesive, printing is carried out.

In particular, special printing inks with phosphors are used here, Fluorescent colors or especially stimulable by IR or UV radiation Color pigments. After printing, the material received is included as standard Self-adhesive coated, dried and covered with release paper.

Counter-printed labels are also known, in which a raw film (for example a 60 μm PP film) is printed in reverse and subsequently the coating with adhesive is carried out in further operations, the backing is laminated on and the labels are punched out. With these labels, the printing is on the side facing the adhesive. For easily understandable reasons, this process is very complex and therefore involves high manufacturing costs.
Then there are also labels on the market with so-called interlayer printing. A, for example, 30 .mu.m laminating film is printed in reverse, laminated together in a suitable laminating station with a correspondingly thin (for example 30 .mu.m PP) self-adhesive material, and then the composite is punched. These types of labels are usually made in one operation. This process can be used to achieve excellent silver printing (usually gravure printing). However, with these labels the entire printing is on the inside of the lamination film (interlayer printing). The print is not plastic, it shows no relief effect, which is desired for certain applications. This means that only the laminating film is printed from the inside, without additional printing on the top of the label.

The object of the present invention is, on the one hand, to create a self-adhesive label in which the printing material or a printing material layer has printing on both sides, in particular thus counter-printed elements (in the intermediate layer printing or counter printing) are combined with elements which are produced in the front printing.
On the other hand, the object of the invention includes providing methods for producing such self-adhesive labels.

This task is solved by labels as set out in the main claim. The subclaims relate to advantageous developments of the subject matter of the invention. Furthermore, the invention relates to proposed uses of the invention Labels and well-designed processes for producing the Label.

• auf der Seite, die zur Klebemasse ausgerichtet ist, eine Druckfarbe aufgedruckt ist, so daß zwischen Bedruckstoffschicht und Klebemasse eine Druckfarbe vorhanden ist, und
• auf der Seite, die der klebend ausgerüsteten Oberfläche gegenüber liegt, eine weitere Druckfarbe aufgedruckt ist, so daß auf der Oberseite der Bedruckstoffschicht eine weitere Druckfarbe vorhanden ist.

Accordingly, the invention relates to a label made of at least one first printing material layer, which is coated on one side with a self-adhesive, which is optionally covered with a release paper or a release film, with the first printing material layer

• a printing ink is printed on the side which is aligned with the adhesive, so that a printing ink is present between the printing material layer and the adhesive, and
• a further printing ink is printed on the side opposite the adhesive-finished surface, so that a further printing ink is present on the top of the printing material layer.

In a preferred embodiment of the invention (interlayer printing) is below the adhesive has a second substrate layer, on the underside of which Self-adhesive is coated, which if necessary with a release paper or is covered with a release film. Then the second substrate layer is the real one Substrate of the basic label and the first substrate layer the laminating film. Of the upper adhesive coating also represents the lamination adhesive of the label.

It is preferred if following the printing on the underside of the printing material or the first printing material layer (counter-printed elements) Lamination takes place.

It is further preferred if the printing ink is on the top of the printing material or the first printing material layer is printed in frontal printing, after the lamination is done.

It is further preferred if the printing inks are used for counter-printed elements metallic colors (silver, gold printing etc.).

In an excellently designed embodiment of the label according to the invention is in addition to printing metallic colors in the form of counter-printed elements the same places on the top a raised print (frontal print), in particular a print with a transparent relief lacquer (for example from Sicpa, 78-3-021) or with a conventional transparent screen printing ink.

In this way, the relief character of a hot foil stamping can be simulated creates an effect that is very similar to hot foil stamping.

According to the invention as materials of the printing material or the first printing material layer foils can be used, especially monoaxially and biaxially stretched foils based on polyolefins, then films based on stretched polyethylene or stretched copolymers containing ethylene and / or polypropylene units, optionally also PVC films, PET films, films based on vinyl polymers, Polyamides, polyesters, polyacetals, polycarbonates

Also films based on stretched polyethylene or stretched copolymers, containing ethylene and / or polypropylene units, can be used as printing material use according to the invention.

Monoaxially stretched polypropylene is characterized by its very high tear strength and low elongation in the longitudinal direction. Monoaxially stretched films based on polypropylene are preferred for producing the labels according to the invention. The thicknesses of the monoaxially stretched films based on polypropylene are preferably between 20 and 100 μm, in particular between 25 and 65 μm, very particularly between 30 and 60 μm.
Monoaxially stretched films are predominantly single-layered, but in principle multilayered monoaxially stretched films can also be produced. One-, two- and three-layer foils are predominantly known, and the number of layers can also be chosen to be larger.

The thicknesses of the biaxially stretched films based on polypropylene are in particular between 12 and 100 µm, especially between 20 and 75 µm, especially between 30 and 60 µm.

Biaxially stretched films based on polypropylene can be produced using blown film extrusion or be produced using conventional flat film lines. Biaxially stretched films both single and multi-layer. In the case of multilayer films The thickness and composition of the different layers can be the same here but also various thicknesses and compositions are known.

Single-layer, biaxial are particularly preferred for the labels according to the invention or monoaxially stretched films and multilayer, biaxial or monoaxial films Basis of polypropylene, which has a sufficiently firm bond between the layers have, since delamination of the layers is disadvantageous during use.

Rigid PVC films are also used for the production of labels like foils based on soft PVC.

Foils based on are preferably used for the labels according to the invention of hard PVC. The thicknesses of the foils are preferably between 20 and 100 μm, particularly between 25 and 65 µm, especially between 30 and 60 µm.

Polyester-based films, for example polyethylene terephthalate, are also known and can also be used to produce the labels according to the invention. The thicknesses of the films based on PET are between 20 and 100 µm, particularly between 25 and 65 µm, especially between 30 and 60 µm.

• die Hydroxycarbonsäure-Typen (AB-Polyester) und
• die Dihydroxy-Dicarbonsäure-Typen (AA-BB-Polyester).

Polyesters are polymers whose basic building blocks are held together by ester bonds (-CO-O-). According to their chemical structure, the so-called homopolyesters can be divided into two groups,

• the hydroxycarboxylic acid types (AB polyester) and
• the dihydroxy-dicarboxylic acid types (AA-BB polyester).

The former are produced from only a single monomer, for example by polycondensation of an ω-hydroxycarboxylic acid 1 or by ring-opening polymerization of cyclic esters (lactones) 2, for example

The latter, on the other hand, is built up by polycondensation of two complementary monomers, for example a diol 3 and a dicarboxylic acid 4:

Branched and crosslinked polyesters are used in the polycondensation of three or get polyhydric alcohols with polyfunctional carboxylic acids. To the polyesters polycarbonates (carbonic acid polyesters) are also generally included.

AB-type polyesters (I) include polyglycolic acids (polyglycolides, R = CH2), Polylactic acids (polylactide, R = CH-CH3), polyhydroxybutyric acid [poly (3-hydroxybutyric acid), R = CH (CH3) -CH2], poly (ε-caprolactone) e [R = (CH2) 5] and Polyhydroxybenzoic acids (R = C6H4).

Purely aliphatic AA-BB type polyesters (II) are polycondensates composed of aliphatic diols and dicarboxylic acids, which are used, inter alia, as products with terminal hydroxyl groups (as polydiols) for the production of polyester polyurethanes [for example polytetramethylene adipate; R1 = R2 = (CH2) 4].
In volume terms. AA-BB-type polyesters of aliphatic diols and aromatic dicarboxylic acids are of the greatest technical importance, in particular the polyalkylene terephthalates [R2 = C6H4, with polyethylene terephthalate (PET) R1 = (CH2) 2, polybutylene terephthalate (PBT) R1 = (CH2) 4 and poly (1,4-cyclohexanedimethylene terephthalate) e (PCDT) R1 = CH2-C6H10-CH2] as the most important representatives. These types of polyester can be varied widely in their properties by using other aromatic dicarboxylic acids (for example isophthalic acid) or by using diol mixtures in the polycondensation and can be adapted to different fields of application.

Purely aromatic polyesters are the polyarylates, including poly (4-hydroxybenzoic acid) (Formula I, R = C6H4), polycondensates from bisphenol A and Phthalic acids (formula II, R1 = C6H4-C (CH3) 2-C6H4, R2 = C6H4) or also from Bisphenols and phosgene belong.

As materials for the second printing material layer in the described embodiment (interlayer printing), it is possible, without exception, to use any self-adhesive materials which are usually used for producing self-adhesive labels. As is known, this is a printing material which is coated with a self-adhesive composition, covered with a carrier, usually a release paper or a release film.
At this point, we would like to draw your attention to the range of self-adhesive materials offered, for example, by Avery (Fasson).

In particular, self-adhesive materials are used with this embodiment a thin substrate so that the total thickness of the first substrate layer laminated labels correspond to those of conventional labels.

Self-adhesive materials with a printing material based on PP with a are preferred Thickness of 25 to 60 µm, particularly preferably those with a thickness of 30 to 40 µm.

Any kind of self-adhesive compositions can also be used without restriction be offered for self-adhesive materials. Depending on the intended use permanent, removable, deep-freeze adhesives, self-adhesive compositions for no-label look labels etc. used.

Commercial inks from the respective suppliers of label printing inks are used as printing inks for the printing processes described. For example, UV-curing offset / flexo / book / screen printing inks or solvent-based gravure inks are offered for label materials made of polyolefin films, for example the Flexocure series for UV flexo printing from Akzo.
In order to take counterfeit-proof aspects into account in the labels to be used, different color pigments and substances can be used in the printing inks.
The most widespread are long-afterglow (phosphorescent) or fluorescent pigments, which are only or predominantly excited by UV radiation and emit in the visible range of the spectrum (for an overview, see, for example, Ullmann's Encyclopedia of Technical Chemistry, 4th edition, 1979, Verlag Chemie) ,
However, IR-active luminescent pigments are also known. Examples of systems with UV fluorescence are xanthenes, coumarins, naphthalimides etc., some of which are listed in the literature under the generic term 'organic phosphors' or 'optical brighteners'. The addition of a few percent of the phosphors in question is sufficient, the integration into a solid polymer matrix in particular being favorable in terms of luminosity and stability.
For example, recipes with RADGLO® pigments from Radiant Color NV / Holland or Lumilux® CD pigments from Riedel-de-Haen can be used. Inorganic phosphors are also suitable. Metal sulphides and oxides, mostly in combination with suitable activators, have proven to be favorable as long-afterglow substances, especially with emission of light in the yellow range. These are available, for example, under the trade name Lumilux® N or as luminous pigments with improved stability, luminosity and afterglow duration under the trade name LumiNova® from the company Nemoto / Japan.

In principle, luminescent materials are also suitable, which are caused by electron beams, X-rays etc. are excited as well as thermochromic pigments, which change with temperature change reversibly color. The use of electrically conductive paints is also possible.

When selecting the color pigments, care should be taken that they are used for the further manufacturing process the labels (for example adhesive coating) are sufficiently stable and not irreversible in the process conditions (possibly thermal Change drying, electron beam or UV curing, etc.).

The security marking is protected against external access because the For example, pressure is embedded between the label film and the adhesive layer. Subsequent manipulations are not to be feared, as a replacement only under Destruction is possible.

Customized "fingerprints" of the labels can be realized by different Colors or patterns can be printed. Especially regular line and Line patterns leave characteristic patterns of luminous dots on the label edges arise and are also particularly material and cost-saving. After the die cut or the laser cutting of the label and the application on the adhesive substrates is a reference when choosing a suitable lighting source on the edge of the label Recognize colors and geometries characteristic pattern.

The advantage of this security label is particularly logistical and cost-effective noticeable. It can be on commercially available printing inks and non-specific label film material can be resorted to, while the latter is otherwise customized is to be produced. As such standard raw material, however, at the label manufacturers is only used as an intermediate product for your own production and not on the market unauthorized access is excluded. They are also small lot sizes and short delivery times possible.

• 10 Gew.-% UV-Tronic HM Lumineszenspaste 806.025
• 90 Gew.-% Bargoscreen UV-Serie 78-2 "transparent"

(beide Farbkomponenten von der Firma SICPA Druckfarben GmbH)
Beide Komponenten werden intensiv vermischt und mit 2 Gew.-% UV-Tronic Fotoinitiator 806.330 versetzt.In one possible embodiment, a UV screen printing ink can be selected as the color, which is produced according to the following recipe:

• 10% by weight UV-Tronic HM luminescent paste 806.025
• 90% by weight Bargoscreen UV series 78-2 "transparent"

(both ink components from SICPA Druckfarben GmbH)
Both components are mixed intensively and 2 wt.% UV-Tronic photo initiator 806.330 is added.

Various adhesive systems can be used to create a composite for labels with interlayer printing. Suitable adhesives for laminating are, for example, UV flexographic laminating adhesives, hotmelt laminating adhesives, pressure-sensitive adhesives, two-component adhesives or the like.
UV laminating adhesives have proven to be advantageous. For example, the self-adhesive material can be produced with the UV 9402 laminating adhesive from Akzo, such a composite of the counterprinted first printing material web with the second printing material web.

Hotmelt laminating adhesives are particularly advantageous for the labels according to the invention. For example the hot melt laminating adhesive A2700 from the company Novamelt, which is equipped with a slot die, especially one with a rotating rod, is applied.

Hotmelt pressure sensitive adhesives are also ideal for lamination Intermediate layer printing, as well as for the self-adhesive coating at Reverse printing.

The labels according to the invention can be used as laminating adhesives or pressure sensitive adhesives a self-adhesive based on natural rubber, PUR, acrylates or styrene-isoprene-styrene block polymers contain.

The use of adhesives based on natural rubber, acrylates or styrene-isoprene-styrene is known, for example, in the "Handbook of pressure sensitive adhesive technology, second edition, published by Donatas Satas, Van Nostrand Reinhold, New York, 1989.

In particular, a commercially available pressure-sensitive mass comes as a self-adhesive mass Adhesive based on PUR, acrylate or rubber is used.

UV are customary and suitable for the use of counter printing according to the invention curing pressure sensitive adhesives, which are applied in the flexo process.

An acrylic hotmelt-based adhesive has been found to be particularly advantageous proven that has a K value of at least 20, in particular greater than 30, obtainable by concentrating a solution of such a mass into an as Hot melt processable system.

Concentration can be carried out in appropriately equipped boilers or extruders take place, especially with the associated degassing is a Degassing extruder preferred.

Such an adhesive is set out in DE 43 13 008 A1, the content of which is hereby incorporated by reference and the content of which forms part of this disclosure and invention. In an intermediate step, the solvent is completely removed from these acrylic masses produced in this way.
In addition, other volatile components are removed. After coating from the melt, these masses have only a small proportion of volatile constituents. All monomers / formulations claimed in the above-mentioned patent can thus be adopted. Another advantage of the compositions described in the patent is that they have a high K value and thus a high molecular weight. Those skilled in the art are aware that systems with higher molecular weights can be crosslinked more efficiently. The proportion of volatile components drops accordingly.

The solution of the mass can 5 to 80 wt .-%, in particular 30 to 70 wt .-% Contain solvents.

Commercial solvents are preferably used, especially low boiling hydrocarbons, ketones, alcohols and / or esters.

Single-screw, twin-screw or multi-screw extruders are further preferred used with one or in particular two or more degassing units. Benzoin derivatives can be polymerized into the acrylic hotmelt-based adhesive be, for example, benzoin acrylate or benzoin methacrylate, acrylic acid or Methacrylic esters. Such benzoin derivatives are described in EP 0 578 151 A1 described.

The acrylic hot melt adhesive can also be chemically cross-linked.

In a particularly preferred embodiment, copolymers of (meth) acrylic acid and its esters with 1 to 25 carbon atoms, maleic, fumaric and / or itaconic acid and / or their esters, substituted (meth) acrylamides, maleic anhydride and other vinyl compounds are used as self-adhesive compositions , such as vinyl esters, in particular vinyl acetate, vinyl alcohols and / or vinyl ethers.
The residual solvent content should be less than 1% by weight.

An adhesive that is particularly suitable is a low molecular weight Acrylic hotmelt PSA, such as those under the name acResin UV or Acronal ®, in particular Acronal DS 3458, from BASF: This adhesive with low K value gets its application-oriented properties through a final crosslinking triggered by radiation.

Furthermore, an adhesive can be used, from the group of Natural rubbers or the synthetic rubbers or from any blend Natural rubbers and / or synthetic rubbers, the natural rubber or the natural rubbers basically from all available qualities such as Example crepe, RSS, ADS, TSR or CV types, depending on the required purity and Viscosity level, and the synthetic rubber or the synthetic rubbers from the Group of randomly copolymerized styrene-butadiene rubbers (SBR), the Butadiene rubbers (BR), synthetic polyisoprene (IR), butyl rubbers (IIR), the halogenated butyl rubbers (XIIR), the acrylate rubbers (ACM), the Ethylene-vinyl acetate copolymers (EVA) and the polyurethanes and / or their blends can be chosen.

Further preferably, the rubbers can be used to improve processability thermoplastic elastomers with a weight fraction of 10 to 50 wt .-% added are based on the total elastomer content.

The most tolerable ones are particularly representative at this point Styrene-isoprene-styrene (SIS) and styrene-butadiene-styrene (SBS) types.

Tackifying resins are, without exception, all known and in the literature described adhesive resins can be used. These are representative Rosins, their disproportionated, hydrogenated, polymerized, esterified derivatives and salts, the aliphatic and aromatic hydrocarbon resins, terpene resins and terpene phenolic resins. Any combination of these and other resins can can be used to suit the properties of the resulting adhesive adjust. On the representation of the state of knowledge in the "Handbook of Pressure Sensitive Adhesive Technology "by Donatas Satas (van Nostrand, 1989) expressly pointed out.

Hydrocarbon resin is a collective name for thermoplastic, colorless to intensely brown colored polymers with a molecular weight of generally <2000.

They can be divided into three large groups according to their provenance: in petroleum, Coal tar and terpene resins. The most important coal tar resins are the coumarone indene resins. The hydrocarbon resins are made by polymerizing the raw materials isolatable unsaturated compounds obtained.

The hydrocarbon resins also include polymers with a correspondingly low molar mass which are accessible by polymerizing monomers such as styrene or by polycondensation (certain formaldehyde resins). Hydrocarbon resins are products with a softening range that varies within a wide range from <0 ° C (liquid hydrocarbon resins at 20 ° C) to> 200 ° C and a density of approx. 0.9 to 1.2 g / cm ³ .

They are soluble in organic solvents such as ethers, esters, and ketones chlorinated hydrocarbons, insoluble in alcohols and water.

Rosin is a natural resin that is made from the raw resin of Conifers is obtained. There are three types of rosin: Balsam resin as Distillation residue of turpentine oil, root resin as an extract from coniferous rhizomes and tall resin, the distillation residue from tall oil. The quantitative Balsam resin is of the greatest importance.

Rosin is a brittle, transparent product from red to brown in color. It is insoluble in water, but soluble in many organic solvents such as (chlorinated) aliphatic and aromatic hydrocarbons, esters, ethers and ketones as well in vegetable and mineral oils. The softening point of rosin is in the Range from approx. 70 to 80 ° C.

Rosin is a mixture of approx. 90% resin acids and 10% neutral substances (fatty acid esters, terpene alcohols and hydrocarbons). The most important rosin resin acids are unsaturated carboxylic acids of the gross formula C20H30O2, abietic, neoabietic, levopimaric, pimaric, isopimaric and palustric acids, in addition to hydrogenated and dehydrated abietic acid.
The proportions of these acids vary depending on the provenance of the rosin.

All known plasticizing substances can be used as plasticizers become. These include the paraffinic and naphthenic oils, (functionalized) oligomers such as oligobutadienes, isoprene, liquid nitrile rubbers, liquid terpene resins, vegetable and animal oils and fats, phthalates, functionalized Acrylates.

For the purpose of thermally induced chemical crosslinking, all known thermally activatable chemical crosslinkers such as accelerated sulfur or sulfur donor systems, isocyanate systems, reactive melamine, formaldehyde and (optionally halogenated) phenol-formaldehyde resins or reactive phenolic resin or diisocyanate crosslinking systems with the corresponding activators are epoxidized polyesters - and acrylate resins and their combinations can be used.
The crosslinkers are preferably activated at temperatures above 50 ° C., in particular at temperatures from 100 ° C. to 160 ° C., very particularly preferably at temperatures from 110 ° C. to 140 ° C.
The crosslinkers can also be thermally excited by IR rays or high-energy alternating fields.

The label according to the invention contains all possible uses open. It is particularly advantageous to use the label on packaging such as tubes, Crucibles, cans or bottles made of glass, plastic or metal, especially in the Design with silver printing and relief lacquer. The label then looks very attractive and affects potential customers if it is placed on the packaging accordingly is very attractive.

The label according to the invention can be very much in particular by the following methods manufacture advantageously.

With regard to the interlayer printing, a method is shown in which Labels, with both counter-printed and front-printed elements in one Operation can be made.

With regard to reverse printing, however, there is a process for producing labels described in which the application of counter-printed as well as front-printed Elements or elements made according to one of these Printing types alone, in one operation with the coating of one Provide self-adhesive and the lamination of the backing material takes place.

• die Bedruckstoffbahn bedruckt, und zwar auf der Seite, welche zur Klebemasse ausgerichtet ist (Konterdruck), und auf der gegenüberliegenden Seite (Frontaldruck), und im gleichen Arbeitsgang
• eine trennbeschichtete Trägerbahn zugeführt und eine Selbstklebemasse einseitig auf eine der beiden Bahnen, in der Regel auf die Trennschicht der Trägerbahn, aufgetragen, so daß beim anschließenden Zusammenkaschieren ein Verbund hergestellt wird zwischen mit Bedruckstoff und Träger.

Es wird die Erfindung in einer alternativen Herstellweise in Form von einer Bedruckung beider Seiten des Bedruckstoffes beziehungsweise der ersten Bedruckstoffbahn vor der Kaschierung in keiner Weise eingeschränkt. Hierbei werden zuerst mit Hilfe eines Wendekreuz nacheinander beide Seiten der Bahn bedruckt und anschließend erfolgt die Kaschierung.In a first a method of making labels is in a work process

• printed on the printing material web, on the side that is aligned with the adhesive (reverse printing), and on the opposite side (frontal printing), and in the same operation
• a release-coated carrier web is supplied and a self-adhesive is applied on one side to one of the two webs, usually to the separating layer of the carrier web, so that when laminating together a bond is made between the substrate and the substrate.

The invention is in no way restricted in an alternative production method in the form of printing on both sides of the printing material or the first printing material web before lamination. First, both sides of the web are printed one after the other with the help of a turning cross and then the lamination is carried out.

In the preferred embodiment, the composite is laminated with the help of a turning cross.

• Auf einer der beiden Abwicklungen wird eine Rolle mit einem Trägermaterial, beispielsweise einem Trennpapier abgerollt.
• Auf einer weiteren Abwicklung wird eine Rolle mit der Bedruckstoffbahn abgerollt.
• Die Bedruckstoffbahn wird mit einer beliebigen Anzahl der zur Verfügung stehenden Druckstationen bedruckt. Dies erfolgt wahlweise im Offset-, Buch-, Flexo-, Siebdruck, insbesondere im Tiefdruckverfahren.
• Das Trägermaterial wird auf der trennbeschichteten Seite mit einer Selbstklebemasse beschichtet.
• Das Trägermaterial und die Bedruckstoffbahn werden derart zusammenkaschiert, daß die Selbstklebemasse den Druck auf der Bedruckstoffbahn bedeckt.
• Anschließend wird die kaschierte Bahn in der Maschine gewendet.
• Die Oberseite der Bedruckstoffbahn kann nun, entsprechend der noch zur Verfügung stehenden Druckwerke, bedruckt werden. Dies erfolgt wahlweise im Offset-, Buch-, Flexo-, Tiefdruck, insbesondere im Siebduckverfahren .
• Gegebenenfalls findet eine Stanzung der einzelnen Etiketten statt.
• Gegebenenfalls findet eine Aufrollung der Etikettenbahn statt.

Another advantageous method comprises the following steps:

• A roll with a carrier material, for example a release paper, is unwound on one of the two unwinds.
• In a further processing, a roll with the printing material web is unrolled.
• The printing material web is printed with any number of available printing stations. This is done optionally in offset, book, flexo, screen printing, especially in gravure printing.
• The backing material is coated on the release-coated side with a self-adhesive.
• The carrier material and the printing material web are laminated together in such a way that the self-adhesive composition covers the pressure on the printing material web.
• The laminated web is then turned in the machine.
• The top of the printing material web can now be printed in accordance with the printing units still available. This takes place optionally in offset, book, flexo, gravure printing, especially in screen printing.
• The individual labels may be punched out.
• If necessary, the label web is rolled up.

Figur 1

Die zur Herstellung des Etiketts erforderliche Anlage von der Abwicklung bis zum Druckwerk 2,

Figur 2

die zur Herstellung des Etiketts erforderliche Anlage mit den Druckwerken 2 bis 4, der Hotmelt-Beschichtungs-Anlage, der Kaschierstation und dem Wendekreuz W und

Figur 3

die zur Herstellung des Etiketts erforderliche Anlage vom Druckwerk 4 bis zur Aufwicklung.

On the basis of the figures described below, this method is explained in more detail in a particularly advantageous embodiment of the system required for this, without wishing to restrict the invention unnecessarily. Show it

Figure 1

The system required to produce the label, from processing to printing unit 2,

Figure 2

the system required to produce the label with the printing units 2 to 4, the hot-melt coating system, the laminating station and the turning cross W and

Figure 3

the system required to produce the label from the printing unit 4 to the rewinder.

As exemplified in Figures 1 to 3, in a specially for this designed label printing machine, on one of the two developments, here in the Processing A1, a roll with a carrier material and on a further processing, a roll with the printing material web is unrolled here in development A2.

In station C2, corona pretreatment is usually performed on both sides Film surfaces.

The printing material web is shown in the printing units D1 to D (x), here in the Printing units D1 to D3, with the desired imprint. On the release-coated side of the carrier material becomes a in the laminating station K. Self-adhesive compound coated. Then the carrier material and the Printing material web laminated together in such a way that the self-adhesive applied the pressure covered the first carrier layer.

An alternative production method is shown in FIG. 2, which provides the coating the self-adhesive in the flexo process.

Subsequently, in the turning cross W, the laminated web is turned, see above that the top of the printing material web in the printing units D (x + 1) to D (z), here shown in the printing units D4 to D8, can be printed.

The individual labels are punched in the Rotostanze RS and then the grille take-off G. Then the label web EB rolled up.

An advantage of the process according to the invention is that the self-adhesive coating is applied any position of the machine can take place, that is, on each of the printing units D1 to D (z), in the illustrated case D1 to D8, with a lamination on the printing unit D3. It are any combination between counter print (K) and front print (F) possible: K = 1 to z; F = 1 to (z-K).

In this case, the pressure sensitive adhesive is applied indirectly, i.e. first to the backing material, preferably a silicone film, coated, but this is not a limitation of this invention should represent, since a self-adhesive coating on the printed web in front of the Laminating with the carrier material is also feasible.

• Auf einer der beiden Abwicklungen wird eine Rolle Selbstklebe-Material mit der zweiten Bedruckstoffbahn, auf welcher eine Selbstklebemasse vorhanden ist, die mit einem Trägermaterial eingedeckt ist, abgerollt.
• An einer weiteren Abwicklung wird eine Rolle mit der ersten Bedruckstoffbahn abgerollt.
• Die erste Bedruckstoffbahn wird nun mit einer beliebigen Anzahl der zur Verfügung stehenden Druckstationen bedruckt. Dies erfolgt wahlweise im Offset-, Buch-, Flexo-, Siebdruck, insbesondere im Tiefdruckverfahren.
• Die zweite Beduckstoffbahn und die erste Bedruckstoffbahn werden derart zusammenkaschiert, daß der Kaschierklebstoff den Druck auf der ersten Bedruckstoffbahn bedeckt.
• Anschließend wird die kaschierte Bahn in der Maschine gewendet.
• Die Oberseite der ersten Bedruckstoffbahn wird nun entsprechend der noch zur Verfügung stehenden Druckwerke bedruckt. Dies erfolgt wahlweise im Offset-, Buch-, Flexo-, Tiefdruck, insbesondere im Siebduckverfahren.
• Gegebenenfalls findet eine Stanzung der einzelnen Etiketten statt.
• Gegebenenfalls findet eine Aufrollung der Etikettenbahn statt.

The second procedure involves the following steps:

• On one of the two unwinds, a roll of self-adhesive material is unwound with the second printing material web, on which there is a self-adhesive composition which is covered with a carrier material.
• At a further processing, a roll with the first printing material web is unwound.
• The first printing material web is now printed with any number of available printing stations. This is done optionally in offset, book, flexo, screen printing, especially in gravure printing.
• The second printing material web and the first printing material web are laminated together in such a way that the laminating adhesive covers the print on the first printing material web.
• The laminated web is then turned in the machine.
• The top of the first printing material web is now printed in accordance with the printing units still available. This takes place optionally in offset, book, flexo, gravure printing, especially in screen printing.
• The individual labels may be punched out.
• If necessary, the label web is rolled up.

Figur 4

die zur Herstellung des Etiketts erforderliche Anlage von der Abwicklung bis zum Druckwerk 2,

Figur 5

die zur Herstellung des Etiketts erforderliche Anlage mit den Druckwerken 2 bis 5, der Kaschierstation und dem Wendekreuz und

Figur 6

die zur Herstellung des Etiketts erforderliche Anlage vom Druckwerk 4 bis zur Aufwicklung

On the basis of the figures described below, this method is explained in more detail in a particularly advantageous embodiment of the system required for this, without wishing to restrict the invention unnecessarily. Show it

Figure 4

the system required to produce the label, from processing to printing unit 2,

Figure 5

the system required for producing the label with the printing units 2 to 5, the laminating station and the turning cross and

Figure 6

the system required to produce the label from the printing unit 4 to the rewinder

As exemplified in Figures 4 to 6, in a specially for this designed label printing machine, on one of the two developments, here in the Processing A1, a roll with the second printing material web, a self-adhesive material, consisting of printing material, self-adhesive and carrier material, unwound. On a further processing, here in processing A2, becomes a role with the first Roll of printing material rolled off.

In stations C1 and C2 there is one or both sides Corona pretreatment of the material surfaces.

The first printing material web is in the printing units D1 to D (x), shown here in the Printing units D1 to D3, with the desired imprint (Liner pressure).

The second substrate web and the first substrate web are in the Kaschierstation K laminated together so that the adhesive the pressure on the covered first carrier layer.

An alternative, very advantageous production method is shown in Figure 5, which represents the Coating of the self-adhesive in the hotmelt process.

Subsequently, in the turning cross W, the laminated web is turned, see above that the top of the first printing material web in the printing units D (x + 1) to D (z), here shown in the printing units D4 to D8, can be printed.

The individual labels are punched in the Rotostanze RS and then the grille deduction G.

The label web EB is then rolled up.

An advantage of the method according to the invention is that the lamination on any Position of the machine can take place, that is, on each of the printing units D1 to D (z), in which illustrated case D1 to D8, with a lamination on the printing unit D3. So there are any combination between counter print (K) and front print (F) possible: K = 1 to z; F = 1 to (z-K).

The label according to the invention has elements that can be produced by the frontal printing process and then further elements that are produced by the counter or interlayer printing. The label combines the advantages of both printing process variants.
Certain printing inks are on the inside (interlayer printing or counter printing), in combination with printing inks on the top (frontal printing).

Both methods have advantages. The interlayer printing is used, for example, for one to achieve good, inexpensive silver printing, in frontal printing one achieves a better one Relief effect (usually screen printing). It is also an advantage of reverse printing that the printing inks are protected against media (filling goods, chemicals, etc.).

In the following, the invention will be further explained using two examples, too here without wanting to unnecessarily limit the invention.

Examples Example 1 (counter / front printing) • Foil

Biaxially stretched, coextruded film based on polypropylene from BIMO, corona-pretreated on both sides film thickness 60 µm (STILAN MP / B 60) Elongation at break MD 200% (ASTM D 882) Elongation at break TD 70% (ASTM D 882) Modulus of elasticity MD 2000 N / mm ² (ASTM D 882) Young's modulus TD 3400 N / mm ² (ASTM D 882)

• silicone film (release film)

commercially available silicone film from Siliconatura film thickness 30 µm PET (Silphan S 30 M74F) (or silicone paper)

• printing inks

UV-curing offset / flexo / book / screen printing ink or solvent-based Gravure ink, such as those offered by Akzo, for example Flexocure series for UV flexo printing

• adhesive

Acrylic hotmelt PSA for producing a self-adhesive material, for example Acronal DS 3458, from BASF
The adhesive is applied over the entire surface using a slot die (for example Nordson BC 40, rotating rod principle) and UV-crosslinked.

(Alternatively, flexo UV pressure sensitive adhesives or dispersion / solvent pressure sensitive adhesives be used.)

FIG. 7 shows an inventive label with the following layers: 11 Surface print 1 Printing material 60 µm PP film 12 counterprint 2 Pressure sensitive adhesive 3 Silicone film / -paper

Example 2 (intermediate / front printing) • Laminating film

Biaxially stretched, coextruded film based on polypropylene from BIMO, corona-pretreated on both sides film thickness 30 µm (STILAN BS) Elongation at break MD 200% (ASTM D 882) Elongation at break TD 70% (ASTM D 882) Modulus of elasticity MD 2000 N / mm ² (ASTM D 882) Young's modulus TD 3400 N / mm ² (ASTM D 882)

• Self-adhesive material

commercially available label material from Raflatac Top film: 30 µm polypropylene PSA: any pressure sensitive adhesive, which for label material used is, for example, based on acrylate (Raflatac, RP 37) silicone film Polyester 36 µm (or silicone paper)

• printing inks

UV-curing offset / flexo / book / screen printing ink or solvent-based Gravure ink, such as those offered by Akzo, for example Flexocure series for UV flexo printing.

• Laminating adhesive

suitable laminating adhesive for laminating the film with the self-adhesive material, for example UV flexographic laminating adhesive (Akzo, UV 9402), hot-melt laminating adhesive, Pressure sensitive adhesives, hot melt pressure sensitive adhesive, 2-component adhesive or similar

FIG. 8 shows an inventive label with the following layers: 11 Surface print 5 1. Printing material web 30 µm PP film 12 counterprint 4 laminating adhesive 1 2. Printing material web 30 µm PP film (basic label) 2 Pressure sensitive adhesive 3 Silicone film / -paper

Claims (12)

Label from at least one first printing material layer, which is coated on one side with a self-adhesive, which is optionally covered with a release paper or a release film, with the first printing material layer
on the one hand, a printing ink is printed on the side which is aligned with the adhesive, so that a printing ink is present between the printing material layer and the adhesive, and
on the other hand, a further printing ink is printed on the side opposite the adhesive-finished surface, so that a further printing ink is present on the top of the printing material layer. Label according to claim 1, characterized in that a second printing material layer is present below the adhesive, on the underside of which a self-adhesive is coated, which is optionally covered with a release paper or a release film. Label according to claims 1 or 2, characterized in that the lamination is carried out following the printing on the underside of the printing material or the first printing material layer (counter-printed elements). Label according to at least one of the preceding claims 1 to 3, characterized in that the printing ink is printed on the top of the printing material or the first printing material layer in frontal printing after the lamination has taken place. Label according to at least one of the preceding claims, characterized in that the printing ink on the underside of the first carrier layer is metallic, for example silver. Label according to at least one of the preceding claims, characterized in that in addition to printing, in particular with metallic colors, a print, in particular a print with a transparent relief lacquer, is present on the underside of the first carrier layer at the same locations on the top. Use of a label according to at least one of the preceding claims Packaging such as tubes, jars, cans or bottles made of glass, plastic or Metal. Process for the production of labels, in which the printing material web can be printed in one working process, namely on the side which is aligned with the adhesive (reverse printing) and on the opposite side (frontal printing), and in the same operation
a release-coated carrier web is fed in and a self-adhesive composition is applied on one side to one of the two webs, usually to the separating layer of the carrier web, so that a bond is produced between the printing substrate and the carrier during the subsequent lamination. Method according to claim 8, characterized in that a second printing material layer is laminated on instead of the carrier web, on the underside of which a self-adhesive composition is coated, which is optionally covered with a release paper or a release film. Process according to claims 8 or 9, characterized in that a UV-curing acrylate hotmelt pressure-sensitive adhesive is used for the lamination, which is applied with a slot die. Method for producing a label according to at least one of the preceding claims, characterized in that
a roll with a carrier material, for example a release paper, is unrolled on one of the two developments,
a roll with the printing material web is unwound on a further processing,
the printing material web is printed with any number of the available printing stations, optionally in offset, book, flexo, screen printing, especially in gravure printing,
the carrier material is coated with a self-adhesive on the release-coated side,
the backing material and the printing material web are laminated together in such a way that the self-adhesive mass covers the print on the printing material web,
the laminated web is turned in the machine,
the top of the printing material web, depending on the printing units still available, is optionally printed in offset, book, flexographic, gravure printing, in particular in screen printing,
if necessary, the individual labels are punched,
if necessary, the label web is rolled up. Method for producing a label according to at least one of the preceding claims, characterized in that
a roll of self-adhesive material is unwound on one of the two developments with the second printing material web, on which there is a self-adhesive composition which is covered with a carrier material,
a roll with the first printing material web is unwound at a further processing,
the printing material web is now printed with any number of the available printing stations, optionally in offset, book, flexo, screen printing, especially in gravure printing,
the second printing material web and the first printing material web are laminated together in such a way that the laminating adhesive covers the print on the printing material web,
the laminated web is turned in the machine,
the top of the printing material web, depending on the printing units still available, is optionally printed in offset, book, flexographic, gravure printing, in particular in screen printing,
if necessary, the individual labels are punched,
if necessary, the label web is rolled up.

Images