EP2666733A1 - Transparent blister packaging - Google Patents

Abstract

The packaging has a blister (2) made from a transparent or translucent material and releasably connected to a visible surface (3) of a carrier (1). The surface of the carrier comprises a printable and activatable adhesive agent coating (6), which produces releasable connection of the surface of the carrier with the blister upon activation of the coating by pressure, heat, radio frequency or ultrasound. Thickness of the carrier is in a range of 0.01 to 1.0 mm and basic weight of the carrier is in a range of 20 to 600 gram/square meter. The carrier is manufactured from paper, paperboard, metallized paper, plastic, a metal foil or composite material. The adhesive agent coating comprises diluent, dispersing agent, bonding agent, filler, emulsifying agent, lubricity ensuring element, a releasing agent, a plastic dispersant as thermal adhesive agent, a course additive and an anti-foaming agent. The adhesive agent coating is a silicone oil-repellent. An independent claim is also included for a method for manufacturing a blister packaging.

Description

The invention relates to a blister pack, comprising a carrier and a blister connected thereto made of a transparent or translucent material, wherein the surface of the carrier connected to the blister comprises a printable, in particular individually printable with digital printable and activatable adhesive coating, which after activation a detachable Making connection with the blister.

Blister packs are generally commercially available as blister packs and generally consist of a rigid carrier, such as cardboard, and a translucent or translucent blister. A blister is a transparent or at least translucent film material in which contours, normally corresponding to the object to be packaged, are formed by thermoforming technology. Such blister packs are, for example, in the DE 20215256 U1 , of the DE 203092243 U1 , of the DE 9216377 U1 and the DE 102004049199 A1 described.

Such blister packs are widely used as product packaging. For example, small parts for retail are packaged therein, but also in the pharmaceutical industry blister packs are well known, for example for tablet packaging. Another field to which the present invention relates relates to individually designed packaging, for example, for gifts, but also for samples and objects, which, for. B. personal or customized customized.

The composite of the carrier with the blister takes place either by welding, gluing or by clamping whereby - depending on the intended use - an easily detachable to difficult to detachable bond between the carrier and blister is produced. When clamping the blister is inserted into a rail-shaped receptacle of the carrier and possibly secured by stapling with staples on the carrier. However, the most elegant and many advantages having connectivity between carrier and blister is a welded joint, at the carrier and blister are heat bonded together creating a seal. Depending on the choice of materials, this composite can be more or less easily solvable. The degree of solubility or the degree of adhesion depends on the use of the blister. If the packaged object is to be secured against unauthorized access, a less easily detachable composite will be required, whereas in closed systems, such as clinics, facilities, etc., a relatively good solubility is desired. So is, for example, from the DE 20215256 U1 an easily openable blister pack with a carrier card and a blister hood, the carrier card being coated with a sealable lacquer and in some areas with a non-sealable lacquer and the blister cap being sealed to the carrier card by means of the sealable lacquer.

In the known blister packs usually cardboard or paperboard is used as a carrier material, wherein the carrier material is coated for later attachment of the blister with a sealable lacquer. This results in the problem that the known sealing lacquers can not be printed. It is therefore not possible, the side of the carrier which has been coated to attach the blister with the sealable lacquer to print, because the surface properties of the known sealing lacquer eg. No printer ink or toner can accommodate and because of the high temperatures not in one Thermal printing process can be printed.

If the surface of the carrier on which the blister is to be attached must be printed in the known blister packs, therefore, this surface is first printed and then coated over the entire surface with the sealable paint. However, the surface of the applied sealing wax is then no longer printable. Prices, code numbers and other data that are to be applied to the printed carrier surface only after the application of the paint, for example. Because they are initially not known at the first printing of the carrier, then have to be subsequently added by printed adhesive labels, for example , Often, however, there is the desire to be able to digitally print the substrate directly before sealing the blister on the paint layer, but this is not possible because of the surface properties of the sealing wax. If the sealing wax could be printed, for example, an immediate update of printed product information such as prices, code numbers and product descriptions etc. would be possible. This could have huge logistics costs can be saved, which, for example, by means of adhesive labels, which is usually done manually by a subsequent Aufspenden information. However, the previously available blister packs do not allow printing on the surface of the carrier on which the blister is to be sealed, because either the printing disturbs the sealing compound between the carrier and the blister in its adhesive force or the imprint by the welding or Sealing the blister is damaged.

The object of the present invention is therefore to provide a blister pack whose carrier can be individually printed on the visible surface on which the blister is mounted and subsequently provided with a blister, the printed information being readable after application of the blister should and the bond between the carrier and the blister by the imprint in the adhesive force should not be reduced. The printing of the visible surface of the carrier is thereby intended with all common digital printing methods, e.g. be possible with a laser printer, an inkjet printer or a thermal transfer printer.

This object is achieved with a Bliserverpackung with the features of claim 1. Preferred embodiments are shown in claims 2 to 12. The object is further achieved by a method for producing a blister pack with the steps specified in claim 13.

The blister pack according to the invention comprises a carrier and a blister of a transparent or translucent material, which is releasably connectable to a surface of the carrier, wherein the surface of the carrier to be connected to the blister, a printable and activatable adhesive coating which by activation makes the detachable connection with the blister.

1. a) einseitiges oder beidseitiges Beschichten der Oberfläche(n) eines Trägers mit einer bedruckbaren und aktivierbaren Klebemittelbeschichtung ,
2. b) Bedrucken der mit der Klebemittelbeschichtung beschichteten Oberfläche(n) des Trägers,
3. c) Aufsetzen eines Blisters aus einem transparenten oder transluzenten Material auf eine mit der Klebemittelbeschichtung beschichtete Oberfläche des Trägers ,
4. d) Aktivieren der Klebemittelbeschichtung durch Einwirkung von Druck, Hitze, Hochfrequenz oder Ultraschall, oder einer Kombination davon, zur Herstellung einer lösbaren Verbindung zwischen der bedruckten Klebemittelbeschichtung und dem Blister.

In the method according to the invention for producing a blister pack, the following steps are provided:

1. a) one-sided or double-sided coating of the surface (s) of a carrier with a printable and activatable adhesive coating,
2. b) printing on the surface of the adhesive coated with the adhesive coating,
3. c) placing a blister of a transparent or translucent material on a surface of the carrier coated with the adhesive coating,
4. d) activating the adhesive coating by the action of pressure, heat, radio frequency or ultrasound, or a combination thereof, to produce a releasable bond between the printed adhesive coating and the blister.

FIG. 1 shows the carrier 1 (below) and the blister 2 before assembly by welding or sealing. The carrier 1 has a printable and activatable adhesive coating 6 at least on its visible surface 3, on which the blister is later attached. The composition of the adhesive coating will be described below. On the printable adhesive coating 6, a print 5 printed with a digital printing method is applied, which expediently contains information about the product to be packed with the blister pack and possibly individual symbols, logos, image motifs or the like.

FIG. 2 shows the finished blister pack. The imprint 5 is visible here in the area of the weld and in other areas, provided that they are not covered by the packaging article, not shown here.

The carrier 1 of the blister pack can, for example, be formed by a self-supporting film, a nonwoven, paper or cardboard. The material of the carrier 1 may in particular be cellulosic. For example, paper, paperboard or cardboard are suitable for producing the carrier 1. A cardboard is a material having a basis weight of 150 to 600 g / m ² or 225 g / m ² to 600 g / m ² . At basis weights of more than 600 g / m ² one speaks of cardboard. From paper is called at a basis weight of 7 to 225 g / m ² , wherein 80 g / m ² corresponds to a plain paper. The carrier can also be made of a plastic, for example a polyester, polycarbonate, styrene polymer, PVC, polyamide, polyolefin, acrylic resin, cellulose acetate, vinyl acetate or polyurethane resin, or mixtures or alloys thereof. Furthermore, metal foils are also suitable as a carrier material, provided that they can be made suitable for receiving the adhesive coating 6. Plastic and metal films are expediently present as composites, wherein plastics or metals form the core and have been coated with absorbent layers, for example layers of cellulosic materials, such as a paper pulp, or paper or cardboard was laminated.

The blister 2 is made of a transparent or translucent material. The material suitably has a certain rigidity, so that a material packaged therein does not substantially change its shape. Transparent or transparent means that a substantially unimpeded passage of light can take place, so that the packaged goods or the imprint 5 are visible. Thus, packages that are preferably translucent or transparent are made of materials (eg, plastics) having a light transmission of greater than 50%, preferably greater than 75%, more preferably greater than 85% when measured at a wavelength of about 410 to 800 nm as determined by standard spectroscopic methods. The transparent or transparent material can also be colored, for example, blue, light blue, pink, etc. in such a way that print 5 and packaged goods remain substantially recognizable. The dyeings are for example for advertising purposes or to protect packaged goods from light radiation of a certain wavelength. Translucent means that the film is translucent, but in such a way that essential features of the contents are still recognizable, for example, whether the blister of the blister is filled or not. Thus, translucent means that a composition or package of the invention preferably has a permeability of greater than 25%, more preferably greater than 30%, more preferably greater than 40%, optimally greater than 50%, in the visible portion of the spectrum (approximately 410 to 800 nm). Alternatively, the absorbency may be measured to be less than 0.6 (approximately equivalent to 25% transmittance) or by having a transmittance greater than 25%, with percent transmittance equal to: 1/10 ^absorbency x 100%. The light is subject to volume scattering in the material and the object is only vaguely recognizable in the outline. Font, on the other hand, can be designed so that it is clearly recognizable in the composite area. In addition to the sunscreen, the use of translucent material is important if the goods content is not immediately apparent in detail, or translucent material is chosen for decorative reasons. Translucency can be generated either by the choice of the material itself or by surface treatment.

The material of the blister 2 is preferably a thermoplastic, for example aromatic polyesters, polycarbonates, PVC, styrenic polymers, polyamides, polyolefins, acrylic resins, PU resins and others. The appropriate for the blister 2 forms, for example, troughs, tray forms, protuberances for tablets, etc., which is usually the Form of the packaged article are, for example, pressed or thermoformed by thermoforming.

An integral part of the blister package according to the invention is the adhesive coating 6 on the visible surface 3 of the support 1. The adhesive coating 6 can be applied both on one side of the visible surface 3 and on both sides, i. also on the back 4 of the carrier 1, be applied. The adhesive coating 6 is designed to receive ink from a digital printing method, for example, a laser printing method, an ink jet printing method or a thermal transfer printing method, but does not reduce the adhesiveness of the adhesive coating 6. This makes it possible to produce a detachable connection between blister 2 and carrier 1 by gluing or sealing blister 2 onto printed surface 3 of carrier 1.

To produce a detachable connection between the carrier 1 and the blister 2, the adhesive coating 6 and the blister material are expediently sealable. Sealable means that two materials can be bonded together by the action of pressure and / or heat. In the applied on the visible surface 3 of the carrier 1 adhesive coating 6 are components that form a manually releasable connection when sealed with the material of the blister 2. The adhesion between blister 2 and carrier 1 should preferably be such that the blister 2 is relatively easy to peel off, yet firmly connected such that inadvertent or unauthorized opening is not easily possible. The connection between carrier 1 and blister 2 can be effected, for example, by simultaneous action of pressure and heat, for example by a heated stamp, but also by the action of high frequency and / or ultrasound. These possibilities of the connection, which can be carried out individually or in combination with one another, are explained in more detail below.

High-frequency welding exploits the chemical structure of suitable plastics. In general, one can choose between neutral plastic, ie plastics, which have no dipoles, for example polyolefins, such as polyethylene (PE), polypropylene (PP) and aromatic polyolefins, such as polystyrene (PS) and polar plastics, ie plastics, which have dipoles, such as For example, polyvinyl chloride (PVC), polyamide (PA), polyurethanes (PU) and acetates differ. The materials to be welded are in the High-frequency electromagnetic field exposed to a high-frequency electromagnetic field, whereby the dipoles of the plastics are excited. By this excitation, it comes to a warming and by the subsequent exercise of pressure, the films are joined together. The heat-sealability can be achieved by, for example, having an adhesion promoter or primer present in the surface on the visible surface of the support, and bonding with the heated plastic by mutual or one-sided absorption of material fractions formed by the heating of low-viscosity components. However, the primer or primer can already be present in the adhesive coating or combinations of the two possibilities can be used. The advantages of the high-frequency method include the fact that it is a continuous process in which larger areas can be processed without settling the welding machine. The treatment can take place over the entire surface, but also in an interrupted manner, for example in strip form. In general, it is preferable that the article is sealed around the trough (s) of the blister throughout. The high-frequency method also has the advantage that you can work very accurately and, for example, only heated areas that are really connected.

Another possibility is the use of ultrasonic waves, which generate an internal friction in the plastic materials, whereby the plastic heats up. The same temperatures occur on both the inside and on the outside, so that hardly any losses occur. The heated surfaces are then connected together by pressure generation. The ultrasonic welding process, like the high-frequency welding process, can be carried out continuously. Again, it is preferable that the article is sealed around the trough (s) of the blister throughout.

In contact welding, the connection operation is carried out by means of tools such as contact rails or contact punches. The heating of the tool can be done for example with a resistance heater. The materials to be sealed or sealed are placed between the tools, and the heat and pressure required are applied by combining parts of the tools (rails, jaws, rings, punches, etc.) heated by generally resistance heating. If the duration can be set in time intervals, this is called pulse welding. Contact welding is usually a discontinuous welding process, since only small ones Areas can be welded and the device must be re-scheduled each time.

The adhesive coating 6 on the visible surface 3 of the carrier 1 of the blister pack is suitably sealable and simultaneously printable, in particular in a digital printing process. Advantageously, the adhesive coating 6 is formed silicone oil repellent. This is done essentially by a suitable selection of the constituents of the adhesive coating 6, so that it is made sufficiently hydrophilic. This offers advantages in the digital laser or thermal transfer printing of the imprint 5. The adhesive coating 6 can be provided with color pigments, so that a specific basic pattern or basic information can already be present on the intended areas of the visible surface 3 of the carrier 1. Then, with the aid of inkjet printers or laser printers or thermal transfer printers, individual information can be printed over the whole area or on parts of the visible surface 3 of the carrier 1. In the case of the known sealing lacquers, this process generally fails because they can not be printed with inkjet printers or laser printers without the imprint 5 being changed during heat sealing and / or the adhesion at the location of the imprint 5 being reduced or even completely prevented. On the other hand, the adhesive coating 6 of the present invention offers both the possibility of blanket sealing of a blister and, at the same time, full-surface printing capability, in particular for digital printing processes using an inkjet printer, laser printer or thermal transfer printer, without the adhesiveness after printing, i. the bond between carrier 1 and blister 2 is substantially disturbed.

The coating composition used for the adhesive coating 6 in the present invention is suitably applied in a thin application on the visible surface 3 of the support 1, preferably a dry support of 1 to 20 g / m ² , preferably 2 to 10 g / m ² and particularly preferably from 4 to 8 g / m ² , especially 4 to 6 g / m ^{2 is} produced. Dry coatings of the coating composition of the adhesive coating of 4 to 6 g / m ^{2 have} proven particularly suitable. The coating is preferably applied to the carrier material as an aqueous solution or as a dispersion, for example by knife coating, screen printing or another application method.

By applying the adhesive coating as an aqueous solution to the carrier, a stronger bond between the adhesive coating and the carrier can be achieved than is the case with the known blister packs which have a (non-printable) coating on the carrier. Due to the stronger connection between the adhesive coating and the carrier, a fiber tear occurs when the blister (transparent plastic film) is peeled off, wherein cellulose fibers of the carrier, preferably made of paper or cardboard, are pulled out of it. The invention is characterized in comparison to the known blister packs thus by the fact that a firmer connection between the sealed blister and the carrier is present, which in particular counteracts an unintentional opening of the blister pack according to the invention.

The pure coating composition is suitably mixed for application to the carrier with a diluent, solvent or dispersion medium and applied one or more times, as a diluent, for example. Water or water mixed with small amounts of VOC (volatile organic solvent) can be used. As VOCs, C ₁ -C ₄ alkanols such as ethanol and isopropanol, C ₂ -C ₆ ketones such as acetone, ethers such as THF, sulfoxides such as DMSO can be used.

1. a) Pigmente,
2. b) Kunststoffanteile, insbesondere thermoplastische Polymere (Binder),
3. c) waschaktive Substanzen, sowie
4. d) ggf. hydrophile Substanzen zur Verbesserung der Bedruckbarkeit mit einem Tintenstrahldrucker.

The substances of the coating composition that are preferably present in the solution or dispersion and that finally form the adhesive coating 6 on the visible surface 3 of the carrier 1 can essentially be classified into four groups:

1. a) pigments,
2. b) plastic components, in particular thermoplastic polymers (binders),
3. c) washing-active substances, as well
4. d) optionally hydrophilic substances to improve the printability with an inkjet printer.

The components a) to c) are preferably to be used in printing with inkjet printers, laser printers and thermal transfer printers. For better printability with an inkjet printer, component c) is expedient, component b) then optionally being able to be adapted accordingly or omitted altogether.

Compositions for the adhesive coating 6 which have a proportion of 40 to 70% by weight of binder (plastic components, in particular thermoplastic polymers) and 30 to 50% pigments. The proportion of binder is particularly preferably about 60% by weight and of the pigments about 40% by weight.

Pigments belonging to group a) may be colored or white, usually inorganic fillers, which are such as to allow the absorption capacity of printing media. These include finely ground, inorganic, white or beige pigments. Examples of fillers are silica, silica, titania, magnesia, lime, calcium carbonate, alumina and others, but also particular surface modified fillers specially designed as an ink absorbent, such as Shieldex AC5, a calcium ion-exchanged amorphous silica having a white appearance as a free-flowing powder , The average particle size of Shieldex AC 5, measured with the Malvern Mastersizer 2000 is 3.6 to 5.0 microns. The wet sieve residue (> 42 μm) is 0.01% max. The pH of the suspension (10% aqueous suspension) is 9.2 to 10.2. The humidity (160 ° C) is max. 6.0%. The oil adsorption is 60 g / 100 g. The calcium content is 6% on a dry basis. The density is 1.8 g / ml. The filler has, inter alia, the task of absorbing printing ink. Precarb is precipitated calcium carbonate as PCC slurry (OS), ie it is a suspension of precipitated calcium carbonate in water with a solids concentration of 100-250 g / l. The pH is 9.8-10.5 at 20 ° C. The density varies depending on the solids content. It is about 1.8 g / cm ³ at a solids content of 70%, about 1.5 g / cm ³ at a solids content of 52% and about 1.6 g / cm ³ at a solids content of 54%. The addition of pigments also increases the melting point of the adhesive coating and lowers the block temperature. As a result, in particular, a perfect printing with laser printers is made possible without it being possible for adhesions or adhesive deposits to form in the printer. The lowering of the block temperature prevents in the paper delivery of the printer, a blockage of superimposed carriers of the blister, which have been printed with the printer. Suitably, the adhesive coating is adjusted to have a blocking temperature of at least 20 ° C, preferably greater than 25 ° C and a melting point in the range of 40 ° C to 80 ° C and preferably of about 60 ° C. In the preferred composition of the adhesive coating with a proportion of about 60% by weight of binder (plastic constituents, in particular thermoplastic polymers) and about 40% by weight of the pigments, the block temperature can, for example, be more than 20 ° C. and the melting point to ca. 60 ° C are set.

Group b) (plastic components, thermoplastic polymers) includes the plastics referred to above as adhesives, in particular polyvinyl acetate plastics, which firmly bond to the plastic of the blister. They act as an adhesive or adhesive between the carrier and blister, unless material from the softened blister also participates. Another object of group b) materials, which is to be applied to the carrier and later forms the adhesive coating, is the action as a binder. Binders are substances by which solids with a fine degree of dispersion (eg powder) are glued to one another or to a substrate. Binders are usually added in liquid form to the fillers to be bound. Both substances are mixed intensively so that they spread evenly and all particles of the filler are evenly wetted with the binder. Due to the nature of the binder, the filler can be given a special processing and material property. Pigment mixtures are blended with thermoplastic binders, such as polyvinyl acetate substances so that, for example, a label with laser or thermal transfer printing is possible. In order to produce adhesion between the carrier and the plastic of the blister, a plastic dispersate is preferably used as a thermal adhesive. Examples are aqueous vinyl acetate homopolymers in dispersion of the Mowilith series from Clariant. Appropriately, aqueous vinyl acetate homopolymers are used without plasticizers, eg Mowilith DC. Mowilith DC is a plasticizer-free aqueous polyvinyl acetate dispersion. The solids content is 55-57%. The Brookfield viscosity is in the range of 1000-4000 mPas. The pH is in the range of 4.0 to 5.0. The particle size is about 0.3 to 2.0 microns The minimum film-forming temperature is about 16 ° C. The glass transition temperature is about 38 ° C. Other additives may also partially exert the effect of a binder. An example is the thickener carboxymethyl cellulose sodium, eg Walocel CRT 30 G. It is a whitish powder. The bulk density is> 450 kg / m ³ . It is completely miscible with water.

The group c) (washing-active substances) hydrophilicize the surface and make it suitable for the absorption of pressure particles. With them, a certain hydrophilicity of the adhesive coating is preferably achieved, which is particularly suitable for laser printer toner or thermal transfer ink, but adjusted accordingly also in ink-jet printing process. Suitable washing-active substances are, for example, nonionic detergents, for example ethoxylated organic compounds.

Group c), which comprises substances which are particularly suitable for inkjet printing, include OH group-containing substances, such as polyethylene glycol (PEG) having a molecular weight below 200, glycerol, ethylene glycol, etc. For printing with inkjet printers, it is advantageous To increase hydrophilicity of the adhesive coating to the extent that the present in the ink dyes or color pigments in a short time a defined spot and the carrier liquid in a suitably short period of time in the print carrier (here: the adhesive coating) distributed or has virtually disappeared.

In addition, further adjuvants or additives may optionally be added in the composition of the adhesive coating 6. For example, dispersants, ie, agents that facilitate dispersion and stabilize the dispersion can be used as additives. Examples of dispersants are those of the Dispex series. Dispex N100, for example, is a white powder of anionic polyacrylate having a specific gravity of 0.8 g / cm ^3. The pH of a 40% solution is about 7. The partition coefficient between octanol and water is log Pow = 9.6. Among the materials for the coating composition, the substances to be dispersed may be the pigments or fillers which are incorporated into a liquid. Also present in the dispersions of the adhesive coating 6 may be an emulsifier which forms a dispersion between the liquid hydrophobic and hydrophilic parts of the composition. Lutensol AP10, for example, is an emulsifier with a cloud point of 60 ° C at 100%. It is a nonionic compound of the nonylphenol ethoxylate type with 9-10 units and an HBL value> 13. It is chemically inert.

In order to achieve a uniform application of the adhesive coating 6 on the carrier 1, the solution or the dispersion which forms the adhesive coating 6 after application and drying, suitably added a leveling additive or leveling agent. For example, agents from Silco, especially Silco FWL-137, are suitable. Silcona supplies the additives of the Silco series for aqueous coatings. Silco FLW L-137 has non-ionic character, good wetting properties and good flowability. There are about 50% non-volatile constituents. Silco FLW L-137 is a modified polysiloxane.

In order to achieve a homogeneous dispersion, mechanical stirring of the solution or dispersion of the coating composition is expedient, for which reason an antifoaming agent may preferably be added. The anti-foaming agent then suppresses foaming during application. Anti-foaming agents based on phosphoric acid esters, e.g. those of the series Etingal. Etingal has the CAS no. 115452-90-9 and is a phosphate ester based antifoaming agent with unspecified structure.

• Calciumstearat CA 800, das ein weißliches Pulver mit einem Schmelzbereich von 130-156 °C ist; Die Dichte beträgt 1,03 g/cm³;
• Zinkstearat EZ ist ein weißliches Pulver mit einem Schmelzbereich von 118-128 °C; Die Dichte beträgt 1,1 g/cm³.

It is also expedient for the mechanical application of the adhesive coating 6 to the carrier 1 to provide a lubricant that provides lubricity. In particular stearates, above all calcium stearate, magnesium stearate and zinc stearate, can be used here. As preferred examples, the following stearates are given:

• Calcium stearate CA 800, which is a whitish powder having a melting range of 130-156 ° C; The density is 1.03 g / cm ³ ;
• Zinc stearate EZ is a whitish powder with a melting range of 118-128 ° C; The density is 1.1 g / cm ³ .

Finally, it is expedient for the printed surface of the adhesive coating 6 to be slightly detached again from the printing rollers or from a print head after printing. For this purpose, it is expedient to add to the coating composition of the adhesive coating a certain proportion of a wax, in particular of a microcrystalline wax, as release agent. Examples of micro-crystalline waxes are those of Ceridust ^® series (Ceridust ^® manufactured by Clariant). Examples are the polyethylene wax variants 3620, 3610, 3715, the synthetic wax 2051, the modified polyethylene wax variants 3251 and 9615A, the heavily modified copolymer wax 8020 TP, the amide wax 3910, the ester wax 5551, the PE / PTFE waxes 9610 F and 9630 F, the PP wax 6050 M, the PE / PTFE variants 3920 F, 3940 F and 3941 F as well as the PTFE waxes 9202 F and 9205 F are offered.

The adhesive coatings 6 produced with the abovementioned constituents can expediently additionally be provided with a primer. The additional use of adhesion promoters on the one hand the laser printing and on the other the sealing with films can be improved. As adhesion promoters (primers) it is possible to use, for example, polyvinyl acetate, polyvinyl chloride, polyethylene, acrylates, acrylonitriles, etc. The following is particularly suitable: Licomer® M36 acrylate dispersion (Clariant). Licomer® M36 is a styrene-acrylate dispersion with a milky white appearance. The non-volatile content is 37.0-39.0%, the Brookfield viscosity is 0-140 cP. The pH is 8.0-9.5. The specific gravity is 1.05-1.07 g / cm ³ .

• Dispergiermittel (z.B. Dispex N100) wird in einer Menge von 0,05 bis 2, bevorzugter 0,08 bis 1,5, insbesondere etwa 1 Gewichtsteil eingesetzt.
• Verdicker (z.B. Walocel CRT 30 G) wird in einer Menge von 0,1 bis 4, bevorzugter 0,16 bis 3, insbesondere etwa 2 Gewichtsteilen eingesetzt.
• Alkalilauge, insbesondere Natronlauge 50 %, wird in einer Menge von 1 bis 10, bevorzugter 2 bis 7, insbesondere etwa 5 Gewichtsteilen eingesetzt.
• Gefälltes Calciumcarbonat (z.B. Precarb 100) wird in einer Menge von 30 bis 70, bevorzugter 40 bis 60, insbesondere etwa 50 Gewichtsteilen eingesetzt.
• Ca-Ionenausgetauschtes Siliziumdioxid (z.B. Shieldex AC 5) wird in einer Menge von 75 bis 300, bevorzugter 100 bis 200, insbesondere etwa 150 Gewichtsteilen eingesetzt.
• Nichtionischer Dispersant (z.B. Lutensol AP 10) wird in einer Menge von 6 bis 24, bevorzugter 9 bis 15, insbesondere etwa 12 eingesetzt.
• Wachs wird in einer Menge von 5 bis 20 bevorzugter 7,5 bis 15 insbesondere etwa 10 Gewichtsteilen eingesetzt.
• Stearat-Trennmittel (z.B. Zink- und oder Calciumstearat) wird/werden in einer Menge von 4 bis 16, bevorzugter 6 bis 12, insbesondere etwa 8 Gewichtsteilen eingesetzt.
• Eine Dispersion mit Kunststoffanteilen mit 40 bis 60 Gew.-% Feststoffanteil (z.B. Mowilith DC) wird in einer Menge von 750 bis 2000, bevorzugter 850 bis 1500, insbesondere etwa 1000 Gewichtsteilen eingesetzt.
• Verlaufsadditiv (z.B. Silco FWL-137) wird in einer Menge von 8 bis 32, bevorzugter 12 bis 20, insbesondere etwa 16,7 Gewichtsteilen eingesetzt.
• Antischaummittel (z.B. Etingal S) wird in einer Menge von 0,15 bis 0,6, bevorzugter 0,2 bis 0,4, insbesondere etwa 0,3 Gewichtsteilen eingesetzt.
• Wasser wird zudem in einer Menge von 30 bis 120, bevorzugter 45 bis 90, insbesondere etwa 60 Gewichtsteilen eingesetzt.

As preferred compositions for suitable adhesive coatings 6 on supports which are to be printed digitally in the laser printing process, the following quantities are based on 350 parts of water:

• Dispersant (eg Dispex N100) is used in an amount of 0.05 to 2, more preferably 0.08 to 1.5, especially about 1 part by weight.
• Thickener (eg Walocel CRT 30 G) is used in an amount of 0.1 to 4, more preferably 0.16 to 3, in particular about 2 parts by weight.
• Alkali solution, in particular sodium hydroxide solution 50%, is used in an amount of 1 to 10, more preferably 2 to 7, in particular about 5 parts by weight.
• Precipitated calcium carbonate (eg Precarb 100) is used in an amount of 30 to 70, more preferably 40 to 60, especially about 50 parts by weight.
• Ca ion exchanged silica (eg, Shieldex AC 5) is used in an amount of 75 to 300, more preferably 100 to 200, especially about 150 parts by weight.
• Nonionic dispersant (eg, Lutensol AP 10) is used in an amount of 6 to 24, more preferably 9 to 15, especially about 12.
• Wax is used in an amount of 5 to 20, more preferably 7.5 to 15, especially about 10 parts by weight.
• Stearate release agents (eg, zinc and / or calcium stearate) are used in an amount of 4 to 16, more preferably 6 to 12, especially about 8 parts by weight.
• A dispersion with plastic fractions of 40 to 60 wt .-% solids (eg Mowilith DC) is used in an amount of 750 to 2000, more preferably 850 to 1500, in particular about 1000 parts by weight.
• Leveling additive (eg Silco FWL-137) is used in an amount of 8 to 32, more preferably 12 to 20, especially about 16.7 parts by weight.
• Antifoaming agent (eg Etingal S) is used in an amount of 0.15 to 0.6, more preferably 0.2 to 0.4, especially about 0.3 parts by weight.
• Water is also used in an amount of 30 to 120, more preferably 45 to 90, especially about 60 parts by weight.

Before the addition of plastic components and then the following components, the combined ingredients are conveniently mixed into a slurry.

• Dispergiermittel (z.B. Dispex N100) wird in einer Menge von 0,05 bis 2, bevorzugter 0,08 bis 1,5, insbesondere etwa 1 Gewichtsteil eingesetzt.
• Alkalilauge, insbesondere Natronlauge 50 %, wird in einer Menge von 1 bis 10, bevorzugter 2 bis 7, insbesondere etwa 5 Gewichtsteilen eingesetzt.
• Gefälltes Calciumcarbonat (z.B. Precarb 100) wird in einer Menge von 30 bis 70, bevorzugter 40 bis 60, insbesondere etwa 50 Gewichtsteilen eingesetzt.
• Ca-Ionenausgetauschtes Siliziumdioxid (z.B. Shieldex AC 5) wird in einer Menge von 75 bis 300, bevorzugter 100 bis 200, insbesondere etwa 150 Gewichtsteilen eingesetzt.
• Nichtionischer Dispersant (z.B. Lutensol AP 10) wird in einer Menge von 6 bis 24, bevorzugter 9 bis 15, insbesondere etwa 12 eingesetzt.
• Wachs wird in einer Menge von 5 bis 20 bevorzugter 7,5 bis 15 insbesondere etwa 10 Gewichtsteilen eingesetzt. Stearat-Trennmittel (z.B. Zink- und oder Calciumstearat) wird/werden in einer Menge von 4 bis 16, bevorzugter 6 bis 12, insbesondere etwa 8 Gewichtsteilen eingesetzt.
• Verlaufsadditiv (z.B. Silco FWL-137) wird in einer Menge von 8 bis 32, bevorzugter 12 bis 20, insbesondere etwa 16,7 Gewichtsteilen eingesetzt.
• Antischaummittel (z.B. Etingal S) wird in einer Menge von 0,15 bis 0,6, bevorzugter 0,2 bis 0,4, insbesondere etwa 0,3 Gewichtsteilen eingesetzt.
• Wasser wird in einer Menge von 30 bis 120, bevorzugter 45 bis 90, insbesondere etwa 60 Gewichtsteilen eingesetzt.
• Zudem wird bevorzugt eine OH-Gruppen-haltige Substanz (z.B. Ethylenglycol) in einer Menge von 43 bis 192, bevorzugter 65 bis 130, insbesondere etwa 86 Gewichtsteilen eingesetzt.

The composition of the coating composition of the adhesive coating 6, which is particularly suitable for the ink-jet process, is-again based on 350 parts of water-preferably constructed as follows:

• Dispersant (eg Dispex N100) is used in an amount of 0.05 to 2, more preferably 0.08 to 1.5, especially about 1 part by weight.
• Alkali solution, in particular sodium hydroxide solution 50%, is used in an amount of 1 to 10, more preferably 2 to 7, in particular about 5 parts by weight.
• Precipitated calcium carbonate (eg Precarb 100) is used in an amount of 30 to 70, more preferably 40 to 60, especially about 50 parts by weight.
• Ca ion exchanged silica (eg, Shieldex AC 5) is used in an amount of 75 to 300, more preferably 100 to 200, especially about 150 parts by weight.
• Nonionic dispersant (eg, Lutensol AP 10) is used in an amount of 6 to 24, more preferably 9 to 15, especially about 12.
• Wax is used in an amount of 5 to 20, more preferably 7.5 to 15, especially about 10 parts by weight. Stearate release agents (eg, zinc and / or calcium stearate) are used in an amount of 4 to 16, more preferably 6 to 12, especially about 8 parts by weight.
• Leveling additive (eg Silco FWL-137) is used in an amount of 8 to 32, more preferably 12 to 20, especially about 16.7 parts by weight.
• Antifoaming agent (eg Etingal S) is used in an amount of 0.15 to 0.6, more preferably 0.2 to 0.4, especially about 0.3 parts by weight.
• Water is used in an amount of 30 to 120, more preferably 45 to 90, especially about 60 parts by weight.
• In addition, an OH group-containing substance (eg ethylene glycol) is preferably used in an amount of 43 to 192, more preferably 65 to 130, in particular about 86 parts by weight.

The blister pack according to the invention offers numerous economic advantages. For example, individual information, for example about a product to be packed in the blister, can be combined with a digital printing process, in particular a digital printing process Quick printing method, are applied to the visible surface 3 of the support 1, without having to seal the printed surface. As a visible surface 3 here the side of the carrier 1 is referred to, on which the blister 2 is arranged and fixed. For example, the imprint 5 may contain individualized details of the packaged product, such as personal information for drug packages individually tailored to individual patients. However, the imprint 5 may also contain individual information about the price, the packaging quantities, a best-before date, the size and type of packaging items, energy consumption details, weight units, eco-labels or other certifications concerning the packaged product. The blister packs can therefore be automatically provided with individual information for small groups of customers or groups of patients or even individuals just before the packaging of the product in the blister pack and thereby attaching the blister 2 on the carrier 1, without in comparison with a conventional packaging method for Blister packaging the production flow is significantly disturbed.

The invention is not limited to the described embodiments. Thus, for example, the carrier 1 can be deep-drawn and formed as a foil blister 2 are flatly sealed without deformation on the visible surface 3 of the support 1. Another embodiment, which can be realized by the printing with a digital printing method, is the printing of machine-readable codes, in particular barcodes or 2D codes (QR codes), for the subsequent automated sorting of individualized blister packs.

The exemplary embodiments described below illustrate the preferred production of blister packs according to the invention:

Example 1

In this example, the production of a blister pack is described which can be individually provided with information by digital printing by the laser process.

According to the following application amounts, the pigment mixtures are blended with thermoplastic binders such as polyvinyl acetate to prepare the adhesive coating 6 so that laser marking is possible thereon and a perfect seal by pressure and temperature, possibly under the influence of high frequency or ultrasound, is possible. The proportions by weight of the pigments and the binders in the adhesive coating are appropriately adjusted to the toner properties of typical toner materials of printers in order to ensure the highest possible affinity between the adhesive coating and the toner, thus resulting in a good anchoring of the printed image on the surface of the adhesive coating , amount material 350 parts by weight water 1 Dispex N100 2 Walocel CRT 30G 5 Caustic soda 50% 50 Precarb 100 150 Shieldex AC 5 12 Lutensol AP 10 10 Ceridust 390 4 Zinc stearate N 4 Ca stearate

The substances are stirred successively in the dissolver for 30 minutes to a fine slurry. It is then added with slower stirring: amount material 1000 parts Mowilith DC 16.7 Silco FWL-137 0.3 Etingal S. 60.0 water

6-8 g / m ^{2 of} coating composition are applied to the corresponding support material.

• Durch die Verwendung von Haftvermittlern (Primer) kann einerseits die Laserbedruckung optimiert und andererseits die Versiegelung mit Folien ermöglicht werden.
• Das Trägermaterial wird mit 4-6 g/m² Licomer M36 - Acrylat-Dispersion (Clariant) beschichtet.

Example of Use Primer Primer Coating (Adhesion Promoter):

• The use of adhesion promoters (primers) can on the one hand optimize laser printing and on the other hand enable sealing with films.
• The carrier material is m ² Licomer M36 with 4-6 g / - acrylate dispersion (Clariant) coated.

Example 2

In the following example, the resulting product can be printed by its formulation properties both with laser printing and in the ink-jet process.

1. a) Shieldex AC 5 (Grace) hochporöse amorphe Kieselsäure
2. b) Waschaktive Substanzen, wie zum Beispiel SILCO FWL - 137 (Keim-Additec) Modifiziertes Polysiloxan
3. c) OH-Gruppenhaltige Substanzen, wie zum Beispiel Polyethylenglycol mit einem Molekulargewicht unter 200, Glycerin, Ethylenglycol usw.

This is done, for example, by the particular selection of individual components for the adhesive coating 6, which have a hydrophilic property, such as, for example:

1. a) Shieldex AC 5 (Grace) highly porous amorphous silica
2. b) Detergents, such as SILCO FWL-137 (Seed Additec) Modified Polysiloxane
3. c) OH group-containing substances, such as, for example, polyethylene glycol having a molecular weight below 200, glycerol, ethylene glycol, etc.

The following recipe shows perfect laser and ink-jet printing and subsequent sealing with appropriate foils. amount material 350 parts water 1 Dispex N 100 BASF 5 caustic soda 50 Precarb (CaCO ₃ ) 150 Shieldex AC 5 (Grace) 12 Lutensol APIO (BASF) 10 Ceridust A10 (Clariant) 4 Zinc stearate 4 Ca stearate 16.7 Silco FWL-137 0.3 Etingal S (defoamer) 60.0 water 86.0 ethylene glycol

Coating requirements (dry runs) of the adhesive coating 6 of 6 to 8 g / m ² give optimum properties. List of reference numbers: 1 carrier 2 Blister 3 Visible surface of the carrier 1 (surface of the carrier which is connected to the blister 2) 4 Back of the carrier 1 5 imprint 6 Adhesive coating 7 packing room

Claims (15)

A blister pack with a carrier (1) and a blister (2) made of a transparent or translucent material, which is detachably connected to a surface (3) of the carrier (1), characterized in that the surface (3) of the carrier (1) bonded to the blister (2), having a printable and activatable adhesive coating (6) which activates the releasable connection with the blister (2). Blister pack according to claim 1, wherein the blister (2) made of a thermoplastic material, in particular made of PE, PVC, PP or aromatic polyesters or polycarbonates. Blister pack according to claim 1 or 2, wherein the carrier (1) made of paper or cardboard or a metallized paper or of a plastic or metal foil or a composite material is made. A blister pack according to claim 3, wherein the carrier (1) has a thickness between 0.01 mm and 1.0 mm and a basis weight of 20 to 600 g / m ² . A blister pack according to any one of the preceding claims, wherein the activation of the adhesive coating (6) is effected by the action of pressure and heat, radio frequency or ultrasound, or a combination thereof and in particular by a combination of pressure and heat. Blister pack according to one of the preceding claims, wherein the adhesive coating (6) contains substantially the following components: diluent, dispersant, binder, filler, emulsifier, lubricity-ensuring agent, release agent, plastic dispersate as a thermal adhesive, leveling additive, anti-foaming agent and optionally other auxiliaries. A blister pack according to claim 6, wherein the adhesive coating (6) additionally contains a primer coating. A blister pack according to any one of the preceding claims, wherein the adhesive coating (6) is silicone oil repellent. Blister pack according to one of the preceding claims, wherein the adhesive coating (6) contains a thermoplastic polymer material as an adhesive and pigments and / or washing-active substances. A blister pack according to claim 9, wherein the thermoplastic polymer material of the adhesive coating (6) is selected from polyvinyl acetate, copolymers of vinyl acetate and ethylene, polyvinyl chloride and / or polyacrylate dispersions or mixtures thereof. Blister pack according to claim 9, wherein the adhesive coating (6) additionally contains hydrophilic substances, in particular ethylene glycols, polyethylene glycols (preferably with a molecular weight of 20-400) or glycerol. Blister pack according to one of the preceding claims, wherein the adhesive coating (6) as an aqueous solution or as a dispersion in a dry coating of 2 to 20 g / m ² , preferably 4 to 12 g / m ² , in particular 6 to 4 g / m ² on the Carrier (1) is applied. A process for producing a blister pack according to any one of claims 1 to 12, comprising the steps of: a) one-sided or two-sided coating of the surface (s) (3, 4) of a carrier (1) with a printable and activatable adhesive coating (6), b) printing the surface (s) (3, 4) of the carrier (1) coated with the adhesive coating (6), c) placing a blister (2) of a transparent or translucent material on a surface (3) of the carrier (1) coated with the adhesive coating (6), d) activating the adhesive coating (6) by the action of pressure, heat, radio frequency or ultrasound, or a combination thereof, to produce a releasable bond between the printed adhesive coating (6) and the blister (2). The method of claim 13, wherein in step b) the adhesive coating (6) is first printed with a basic motif in a high edition and then printed with the basic motif adhesive coating (6) with an individual motif in a smaller edition. The method of claim 13 or 14, wherein the carrier (1) and / or the blister (2) for forming a packaging space (7) deep-drawn and in step c) this packaging space (7) before placing the blister (2) with a packaging product is filled.

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