WO2005000986A1

WO2005000986A1 - Transferable adhesive layer

Info

Publication number: WO2005000986A1
Application number: PCT/EP2004/006092
Authority: WO
Inventors: Michael Feldhege; Michael Roreger; Malgorzata Kloczko; Peter Kreucher
Original assignee: Ecs Environment Care Systems Gmbh
Priority date: 2003-06-30
Filing date: 2004-06-05
Publication date: 2005-01-06
Also published as: DE10329275A1

Abstract

Disclosed is a composite comprising a transferable adhesive layer and a supporting film which are non-permanently connected to each other. The adhesive layer may contain components that are released to the environment. Said composite is preferably provided in the form of a roll or a stack for storing, in which case staggered separating forces separate the transferable adhesive layer in a predetermined manner from the supporting film.

Description

Transferable adhesive layer

The invention relates to a transferable adhesive layer which is located on a carrier film during storage and transport. Such a composite of transferable adhesive layer and carrier film may be present as a stack or - preferably - in rolls.

The invention further relates to a device with which portions of a roll of the composite of transferable adhesive layer and carrier film can be separated.

Immediately prior to the intended use of the transferable adhesive layer, a portion of the composite is glued to a substrate and the carrier film is peeled off. The transferable adhesive layer can now unfold its function at the destination.

The state of the art includes double-sided adhesive tapes which are used, for example, as carpet laying tapes. They have a double-coated, durable polypropylene film or a core fabric. This core causes the double-sided adhesive tapes to have a high tear resistance. However, the existence of the core also means a higher material usage and a technically more complex manufacturing process.

Also known are Tesa table dispensers, which are available for donations of arbitrarily long strips one-sided adhesive films in various widths in the office supply. By a spatial distance between the roller and cutter can be reached under the adhesive bottom of the adhesive film and remove a strip of the desired length and cut. However, the adhesive strips have as a carrier a non-adhesive back, which is inseparably connected to the adhesive layer.

Insect insect traps which contain an adhesive layer on a non-adhesive carrier foil are also known. So z. B. Nexa Lotte window fly bait an in the adhesive incorporates the attractant fly pheromone, which is released after removal of a masking paper from the adhesive.

A disadvantage of this prior art, in addition to the high material costs in particular the problem that the user is bound by the geometric specifications of the manufacturer. Particularly in the case of window fly traps, the size of the adhesive surface with lock-active active substance is predetermined at the factory. The commercially available insect trapping devices, as known from WO 87/02863 A and DE 100 55 135 A1, contain adhesive layers that have a uniform size (i.e., a non-user-specified surface of the adhesive layer) due in particular to packaging requirements.

The object of the present invention is to provide a product which offers a consumer (user) the opportunity to use an adhesive layer according to his individual requirements for his purposes. In particular, the surface of this adhesive layer should be adapted in a simple manner to the individual needs of the user.

Another object is to provide an active ingredient-containing adhesive layer which is able to deliver the active substance contained in an environment. The release of the active ingredient can be controlled, d. H. delayed in particular. The amount of drug to be released should correlate with the area. Therefore, the individual adaptation of the surface of the adhesive layer to the needs of the user is also a special task here.

Another object is a material-saving production in which the least possible waste in the form of discarded process sheets, stamped grid, etc. is obtained. Another task is an efficient use of material in the finished product, in particular with regard to the use of materials in the adhesive and any existing ingredients.

The object is achieved by the composite of a transferable adhesive layer and a carrier film, which are connected to each other in a non-permanent manner, which is to be understood that the transferable adhesive layer can be separated from the carrier film in a predetermined manner. A device with a suitable holder contains the roll-on-roll composite of transferable adhesive layer and carrier foil. It has a device for receiving the roll core, a cutting device that can be operated manually or by machine and possibly fixing aids for the carrier film.

A composite is a film consisting of two or more layers. In the present case, the composite contains a transferable adhesive layer and a carrier film; it may optionally contain further layers. Characteristic of this composite is that the transferable adhesive layer and the carrier film are connected to each other in a non-permanent manner.

The composite of transferable adhesive layer and carrier film may be present as a stack of several individual composites, but preferably it is present as a single film web in the form of a roll. By such a role is meant the product that results from winding a web-like composite around a cardboard or metal core (the "roll core.") Preferably, the width of the roll core is wider than the width of the carrier film.

In the case of the composite being a roll, the underside of the transferable adhesive layer is in contact with the top of the carrier film and the top of the transferable adhesive layer is in contact with the underside of the same carrier film. In the event that the composite is in the form of a stack, the situation is similar, being two different but preferably similar backing sheets.

If the composite is in the form of a stack or roll, the transferable adhesive layer is separated from the carrier film in a predetermined manner. In a first step, in this case, the upper side of the transferable adhesive layer is separated from the underside of the carrier film. In a later step, a portion of the composite with the top of the transferable adhesive layer is adhered to a substrate and then the carrier film is separated so that the contact between the underside of the transferable adhesive layer and the Top of the carrier film is released. The thus released underside of the transferable adhesive layer can now unfold its intended use. The order of detachment of the transferable adhesive layer from the carrier film is thus defined.

The composite may contain one or more perforation lines or predetermined breaking lines in the carrier film, in the transferable adhesive layer, or both. These perforation lines run - if the composite represents a film web - preferably transversely to its longitudinal extent. The perforation lines can also represent geometric patterns or certain shapes, for example, correspond to a pad that serves as the target surface for the transferable adhesive layer. However, the presence of such perforation lines / predetermined breaking lines is not absolutely necessary since the user himself should preferably himself determine the desired size of the composite (or area of the adhesive layer).

Finally, the composite may also include a tear strip disposed between the transferable adhesive layer and the carrier foil. Such a tear strip consists of a tear-resistant cord and can facilitate a separation of transferable adhesive layer and carrier film.

The carrier film forms the base for the transferable adhesive layer. The carrier film is a flexible, band-shaped film whose main task is to impart mechanical stability to the transferable adhesive layer during manufacture, storage and transport. Another function of the carrier film is to protect the transferable adhesive layer from undesirable contact with foreign objects. Finally, the carrier film allows contactless transfer of the transferable adhesive layer to a selected base. The user does not need to touch directly the transferable adhesive layer.

The carrier film has a top and a bottom. Preferably, both sides are dehäsiv equipped. By definition, the top side is the side of the carrier film to which an adhesive mass is applied and in layer form in the production of the composite of transferable adhesive layer and carrier film is brought. The top side opposite side of the carrier film is thus the underside of the carrier film.

Suitable materials for the carrier film include paper, metals (eg aluminum, tin) and plastics (eg polyethylene, polyvinyl chloride, polyester, polypropylene, cellophane, cellulose, polyvinylidene chloride, polystyrene, styrene-butadiene block copolymers, polyethylene terephthalate, Ethylene-vinyl acetate copolymers, ethylene-vinyl alcohol copolymers, ethylene-propylene terpolymers, polyacrylonitrile, polyacrylates). It is also possible to use composite films of these materials for the carrier film. It is clear that the carrier film consists of a non-adhesive material.

A preferred material is paper, a sheet-like, sheet-like material consisting predominantly of vegetable fibers and fillers. The main component of the paper is pulp (cellulose). The weight per unit area of the paper which can be used as the carrier film is an important parameter. It is defined as the weight per area in g / m ² . This information is the sum of the masses of fibrous materials used, fillers, auxiliaries, sizing agents, optical brightener, etc. It has been found that paper having a weight per unit area below 150 g / m ² and above 10 g / m ^{2 is} particularly well suited as a carrier film is. Because of this basis weight, the paper has a flexibility which on the one hand ensures good processing (ability to wind) and on the other hand can sufficiently exert a function that stabilizes the transferable adhesive layer. Preferably, paper with a basis weight between 48 and 96 g / m ^{2 is} used.

The controlled separation of the transferable adhesive layer from the carrier film is achieved by a dehäsive equipment of the carrier film. The dehäsive equipment of the carrier film is - provided that the material used for the carrier film not already due to a very smooth and repellent surface has a low adhesive strength - achieved in that the top and bottom of the carrier film are provided with a non-stick coating. For these purposes, materials such as Teflon, Hostafion and especially silicone are suitable. Preferably, the carrier film is not uniformly strong dehäsiv on both sides, but slightly lower on the top than on the bottom. This has the effect of initially separating the upper side of the transferable adhesive layer from the lower side of the carrier film. It is then possible to obtain sections of the composite of transferable adhesive layer and carrier film from the roll (or stack). At a later time, then, the detachment of the underside of the transferable adhesive layer from the top of the carrier film can take place.

As a carrier film for the transferable adhesive layer are in particular siliconized on both sides, web-like materials which are siliconized silicon differently on top and bottom, so that there is a predetermined release force behavior. Siliconeized polyester films in the grammages of 23 to 50 μm have a relatively high flexural strength because they are usually biaxially stretched to achieve good tensile strength. For siliconized paper or paper / LDPE composites (LDPE = Low Density Polyethylene) basis weights of 80 g / m ² paper and 20 g / m ² LDPE are preferably used, but so-called calendered graduated graded graded papers also have basis weights of between 75 and 85 g / m ² use.

Silicone films are plastic films, preferably polyester, polyethylene, polyvinyl chloride, polycarbonate and polypropylene films, but also cellulose products such as Kraft paper or combinations of both with reactive silicone resins based on methylpolysiloxanes or modified derivatives of methylpolysiloxanes. They are usually applied from organic solution, aqueous dispersion or solvent-free on the web-like materials and crosslinked by condensation or addition. The siliconization leads to a reduction of the adhesion tension. Silconized films or paper webs are known in the art and z. B. in DE 21 31 740 A1 and DE 30 18 674 A1, is incorporated herein by reference. Suitable carrier foils are z. B. PETP film 50 microns transparent 54 BV, kraft paper 60 g / m ² brown 52 B4 and kraft paper 80 g / m ² with LDPE coating 20 g / m ² white 51 BD Laufenberg, which are commercially available. The dimensions of the carrier film are determined by the dimensions of the adhesive layer and the desired applications. But also the holder for the roll core of a device for a corresponding role determines the dimension of the carrier film. The web-shaped carrier film can, for. B. assume a width between 1 and 200 cm. For hand-held dispensers, carrier foils having a width of 1 to 15 cm are preferred, the associated transferable adhesive layer having a width which is 2 to 20 mm less. Accordingly, the carrier film on its longitudinal sides between 1 and 10 mm is not in contact with transferable adhesive layer.

For table dispenser carrier films are suitable with a width between 1 and 50 cm, preferably between 2 and 30 cm. Standing or Wandabroller can accommodate roles whose carrier film preferably have a width between 10 and 50 cm. For these "broader" carrier films, the transferable adhesive layers may also be narrower, for which reason uncovered strips with a width of at least 1 mm exist on the longitudinal sides of the carrier films The region on the longitudinal side of the carrier film which is not in contact with the transferable adhesive layer should cease to be than 5 cm.

The transferable adhesive layer contains as an essential component a pressure-sensitive adhesive. In addition, it may also contain at least one ingredient which, in the actual application of the transferable adhesive layer, d. H. if it has been transferred to the user-selected ground from which it is released into the environment.

The transferable adhesive layer may preferably also be coreless. By this it is meant to be free of woven, knitted fabrics, fibers, nonwovens and other materials intended to impart additional cohesion (internal strength) to the adhesive layer. An advantage is that the transferable adhesive layer does not have to have a particularly high tensile strength. The transferable adhesive layer need only have a very low internal strength (cohesion).

The transferable adhesive layer may have a thickness of up to a few millimeters. The thickness of the adhesive layer is preferably between 0 and 500 μm, more preferably between 15 and 250 μm. Typically, a thickness between 50 and 150 microns. The case of a thickness of 0 microns is to be understood that the adhesive layer may also have gaps (cracks, defects, recesses, patterns in the form of meshes, etc.), which do not affect the intended use of the adhesive layer.

The surface coverage of the transferable adhesive layer on the carrier film thus does not need to be 100% in every case, but can - apart from the possibly present, unoccupied areas on the longitudinal sides of the carrier film - also be below 100%. However, this depends substantially on the intended use of the transferable adhesive layer. An area occupation of 10% is to be regarded as the lower limit of a suitable area occupancy. Favorable in terms of the effective use of materials are surface occupancies between 20 and 50%. The area occupation (FB) is defined as the area of the surface of the carrier film (A _b ) covered by the transferable adhesive layer divided by the area of the area covered by transferable adhesive layer (A _u ): FB = A _b / A _u (in%).

The thickness of the transferable adhesive layer does not have to be uniformly constant at all points, but may vary within the specified limits. The width of the transferable adhesive layer may correspond to the width of the carrier film; however, it is preferably slightly smaller so that there are areas on the longitudinal sides of the carrier film which are non-adhesive and which allow the composite to be touched without the risk of sticking. The width of the transferable adhesive layer is thus at least 1 mm smaller, preferably 1 to 5 cm smaller than the width of the carrier film.

A pressure-sensitive adhesive is a material which is aggressive and permanently tacky in dry form at room temperature and adheres firmly to a variety of dissimilar surfaces without the need for a force greater than a finger pressure. Real pressure sensitive adhesives therefore do not require activation by heat or solvent. A pressure-sensitive adhesive can be a single substance, but also a substance mixture. Despite its aggressive tackiness, a pressure-sensitive adhesive can usually be removed from a smooth surface without residue. The pressure-sensitive adhesives are pressure-sensitive adhesives, dispersion adhesives and calculated solvent-based pressure-sensitive adhesives. These are known to those skilled in the art and commercially available as granules, in the form of solid blocks, as solutions in organic solvents (gasoline, heptane, ethyl acetate, ethanol, etc.) or emulsions in water.

Particularly suitable pressure-sensitive adhesives are natural rubber, ABA block copolymers (where A = styrene units and B = isoprene, ethylene or butadiene units), styrene-butadiene copolymers, polyisobutylenes, polybutylenes, mixtures of polyisobutylenes and polybutylenes, ethylene Vinyl acetate copolymers having a vinyl acetate content of 15 to 95%, preferably 30 to 70%, polyacrylates and silicones in question.

Particularly preferred are polyacrylates. These are obtained in the polymerization of at least one monomer from the group comprising acrylic acid, methacrylic acid, esters of acrylic acid and esters of methacrylic acid. Particularly important monomers are 2-ethylhexyl acrylate, methyl acrylate, dimethylaminoethyl acrylate. Frequently, a higher proportion of vinyl acetate is used in the polymerization reaction for the preparation of pressure-sensitive adhesive polyacrylates.

Tackifiers, plasticizers, fillers, crosslinkers, antioxidants, pigments, dyes, etc. are counted as important additives to the above-mentioned pressure sensitive adhesives. Tackifers include resins and (hydrogenated) abietic acid and esters thereof, and those skilled in the art are well aware of these common additives which are particularly useful for adjusting the tackiness of the pressure-sensitive adhesive and are not released from the adhesive layer.

The tackiness of the pressure-sensitive adhesive (or of the mixture of pressure-sensitive adhesive and ingredients) should be adjusted so that the underside of the dried or cooled adhesive layer after the coating step on top of the carrier film with a release force in the range of 0.06 to 0.14 N / 40 mm, in particular 0.08 to 0.12 N / 40 mm adheres. After this coating step, the top of the dried or cooled adhesive layer can be brought into contact with the underside of the carrier film by winding or stacking and thus covered. In In this case, the tack of the pressure-sensitive adhesive is such that the top of the pressure-sensitive adhesive mass adheres to the underside of the backing film with a release force smaller than the aforementioned release force between the bottom of the adhesive layer and the top of the backing film and that in the range of 0.02 to 0.10 N / 40 mm, preferably between 0.04 to 0.08 N / 40 mm.

These graded release forces between the transferable adhesive layer and backing sheet allow for proper unwinding of at least a portion of the composite of transferable adhesive layer and backing film from the roll or stack prior to the step of transferring the transferable adhesive layer to the backing ("target carrier") Prolonged detachment of the carrier film from the transferable adhesive layer (more precisely, the detachment of the underside of the transferable adhesive layer from the top side of the carrier film) is largely precluded An ingredient present in the adhesive layer can now be released therefrom in a controlled manner to the environment.

By release force is meant the adhesion of the adhesive layer to a siliconized cover material. It is based on the test specification FINAT FTM3 in peel test in a tensile tester with a take-off speed of 300 mm / min of test strips, wherein the adhesive layer is to be fixed on one side with a 23 micron thick polyester film. The peel angle between the test strip and the siliconized cover film is 90 ° at a temperature of 23 +/- 2 ° C and a relative humidity of 50% r. F. +/- 6%.

As ingredients that can be released from the actual application of the adhesive layer thereof, in particular volatile substances (individual substances and mixtures) come into question. For example, active ingredients, repellents, attractants, fragrances, etc., which perform a specific function within the environment, are suitable as ingredients to be released. The proportion of these ingredients in the adhesive layer may be between 0.1 and 70% by weight, mainly due to the duration of the desired release and the physical / physiological efficiency of the ingredient to be released, but also the physicochemical compatibility between the release ingredient and the ingredients or type of pressure-sensitive adhesive. Usually, the proportions of the ingredients are between 0.5 and 25 wt .-%, preferably between 2 and 10 wt .-%. The duration of the release may extend from about 6 hours to 4 months. Preferred is a release of 7 days to 2 months.

The release of the ingredients can be controlled. By this is meant a delayed release based on the diffusion of the ingredient (s) through the adhesive layer. Also, the time delay of release can be controlled by surrounding the ingredients with a release controlling membrane. It is known to those skilled in the art how such microencapsulation of liquid or solid ingredients can be accomplished.

Substances which can be used are substances which have a physiological effect in the environment in which they are released from the transferable adhesive layer. These include in particular insecticides, nematocides, rodenticides, molluscicides, fungicides, herbicides and growth regulators. These substances are known to the person skilled in the art.

Particularly suitable repellents are insect repellents, for example dimethyl phthalate, dibutyl phthalate, N, N-diethyl-m-toluamide, limonene, 1-piperidinecarboxylic acid 2- (2-hydroxyethyl) -1-methylpropyl ester, ethyl 3- ( N-acetylbutylamino) -propionate and N, N-caprylic acid diethylamide, cedarwood oil, lavender oil, citronell oil, terpenes and orange oils.

Insect attractants are, in particular, attractants for insects, such as, for example, farnesol, terpineol and vanillin, but also pheromones such as Muscalur, Disparlur, Bonbykol, Brevicomin, (E, E) -8,10-dodecadien-1-ol, (Z) -9-dodecenyl acetate, (E) -9-dodecenyl acetate, 7,11-dimethyl-3-methylene-1, 6,10-dodecatriene, Z-11-hexadecenal, Z-11-hexadecenyl acetate, (Z, Z) -11 , 13-hexadecadienal, cis-11-tetradecenyl acetate, trans-11-tetradecenyl acetate, Z-9-tricosene, Z, E-9,12-n Tetradecadien-1-ylacetate, (E, Z) -2,13-octadecadienal, (E) -2-octadecenal, E (10), (Z) 12-hexadecadien-1-ol and (E) -4-tridecene 1-yl acetate.

As fragrances are natural and synthetic fragrances (flavors, essences) and perfume mixtures (essential oils, balms, resinoids, etc.) in question. These include individual natural or synthetic fragrances (so-called "uniform fragrances") of the ester, ethers, alcohols, aldehydes, ketones, hydrocarbons, terpenes and cyclic compounds types, which are known to the person skilled in the art from relevant handbooks Mixtures of these substances ("perfume compositions") are used.

To produce the composite of carrier film and transferable adhesive layer, hot-melt application methods, solvent application methods and spraying methods are suitable. During coating, a solution containing at least one organic solvent or a water-containing emulsion of the pressure-sensitive adhesive is generally applied over the entire surface of the carrier film. Subsequently, the solvent or water is given the opportunity to evaporate.

In the extrusion, solvent-free pressure-sensitive adhesive compositions are used. These must first be melted so that they are spreadable, d. H. assume flowable consistency. One therefore speaks of hot-melt adhesives. The extrusion also takes place over the entire surface.

In order to produce an adhesive layer present in threads, the pressure-sensitive adhesive is made into a flowable consistency (for example by heating), if it is not in the form of a solution or suspension. Then this mass is applied by at least two outlet nozzles from above onto the moving carrier film. The transport of the carrier film relative to the nozzles then ensures that the pressure-sensitive adhesive mass takes the form of threads. By a laterally acting against the emerging from the nozzles pressure-sensitive adhesive mass air flow can be carried out a swirling, which leads to a higher surface coverage of the carrier film. If necessary, solvents and / or water must then be removed. This method can be carried out without contact, while in the former methods some pressure occurs during coating.

In particular, in the case that the adhesive composition is applied in the form of threads on the carrier film, you can - as long as it still has their flowable consistency - even transport through two opposing rollers, with a leveling to a transferable adhesive layer with a more uniform layer thickness , Also, by this method step, the area occupancy of the carrier film can be increased.

A continuous application of the adhesive composition (pressure-sensitive adhesive, or the mixture of the pressure-sensitive adhesive with ingredients, if appropriate with solvents) to the carrier film is preferred, however, a discontinuous, z. Example, an intermittent (i.e., with periodic interruptions) or clocked (i.e., subdivided into different recurring steps) coating the adhesive composition possible.

The resulting composite web of transferable adhesive layer and carrier film can then be cross-cut and brought into the form of a stack of a plurality of these composites. Preferably, however, the web-shaped material is wound onto a roll core, wherein the upper side of the adhesive layer is covered by the underside of the carrier film.

The composite of transferable adhesive layer and carrier film is used for the transfer of an optionally containing an adhesive to the environment containing ingredient layer on a substantially flat surface. By subsequent removal of the carrier film, the underside of the adhesive layer is exposed and can act as an adhesive surface. However, the backing may also be "rough." After peeling off the backing sheet, the ingredient that is to be released to the environment may be released.

The adhesive layer may also be further processed by transferring it to a substrate having two or more discrete portions of a non-adhesive layered material thereon. This can be about "Reservoirs" of fleece, paper, etc., which contain the ingredient to be released.

Example 1: Preparation of an insect patch

The carrier film (kraft paper 60 g / m ² ) with graduated release properties was coated with a hot melt adhesive, which was previously melted in a temperature-controlled hot melt container at 120 ° C and mixed homogeneously. The melt adhesive composition was composed of 28 parts by weight of pellets of an ethylene-acrylic acid copolymer (LOTRYL 35 BA 40 from ELF ATOCHEM), 46 parts by weight of a phthalic acid ester of technical grade hydroxyabietyl alcohol (CELLOLYN 21-E) and 26 parts by weight of a partially hydrogenated rosin ester (HERCOLYN DE) , The melt thus obtained was cooled with stirring in steps of 4 ° C to 90 ° C and then treated with an insect block active substance (Tetradecadienylactetat TDA from BEDOUKIAN) with a weight fraction of 2.2% (based on the melt adhesive composition) with slow stirring. The coating was carried out by means of a hotmelt applicator head (NORDSON), which made it possible, by means of a die, to apply hot melt adhesive at a basis weight of between 80 and 200 g / m ² , preferably in the range between 100 and 120 g / m ² .

The transport speed of the carrier film was in the range around 50 m / min. In the full-surface coating could be a continuous, d. H. obtained continuous line image. By a clocked hot melt application, an intermittent line image could be generated. After passing through the last roller unit with thermal control, the coated carrier film was wound onto a sleeve ("roll core").

Example 2:

Example 2 was repeated under conditions otherwise similar to Example 1; only the application head produced a hot melt application image deviating from the 100% area occupation. For this purpose, filaments of molten adhesive in parallel orientation, possibly under turbulence, to a regular or irregular network of melt adhesive threads applied to the carrier film. In this way, it was possible to produce a weight per unit area below 30 g / m ² , in one case even below 10 g / m ² .

The application image obtained in this way was transported immediately after application to the carrier film by two counter-rotating rollers. The variable increase of the roller pressure made it possible for the still deformable melt adhesive mass after coating from the narrow melt adhesive threads subsequently to produce again an adhesive layer with a higher surface coverage, which was up to 100%. The advantages of this variant with less surface coverage were an immense savings in terms of the adhesive material and the attractant contained therein with a comparable effect on the insects to be attracted.

Example 3:

A roll of the composite of carrier film and attractant-containing transferable adhesive layer was placed with the supernatant of the roll core in the sleeve receiving a Tischabrollers that the removal could be done with the upwardly facing top of the adhesive layer. The preference was given in a manual way over the uncoated side edges of the carrier film. In front of the holding rollers, which served as fixing aids, the (preferably sheet-like) "target carrier material" (in this specific case a sheet of paper the size of a postcard, but the intended underlay can eg the section or a roll of materials such as Cardboard, plastic, Plexiglas, wood, etc.) and by pressing from above or below, at least three-layered composite of said components was produced. The resulting three-layer "transfer insect glue laminate" was cut on a user-selectable transport path by a cutter (fixed knife) to obtain a portion of the "transfer insect glue laminate" of a defined length.

The "target carrier material" ended flush with the edge of the composite of carrier film and attractant-containing transferable adhesive layer possible to end the target carrier material set back by a certain length, which is advantageous for generating a glue-free edge as a gripping aid.

As shown, the process step of cross-cutting produces adhesive portions of any size (in particular, length) specified by the user. This results in sticky traps from an at least three-layer composite (the "transfer insect glue laminate"), which are particularly suitable for catching insects (so-called monitoring, so-called mass catching) The sections thus generated by the user by removing the carrier film from the bottom of the activated transferable adhesive layer.

Example 4:

Example 3 is repeated under otherwise identical conditions; only the table dispenser is replaced by a commercial hand dispenser or a manual, semi-automatic or electronic self-adhesive tape dispenser. The composite of carrier film and attractant-containing transferable adhesive layer is thereby directly transferred to a carrier web or a blank (for example disposable cardboard case) and brought to the selected target length via a transverse cutting device.

The insect glue traps that can be produced according to this description have numerous advantages such as. As the ease of handling the self-curled or stacked and thus protected, the attractant-containing, transferable adhesive layer, the good transportability and cost-effective processing in the destination countries and rapid adaptation to the different product requirements (eg, the dimensions differently designed trap systems) by applying a plurality of parallel, attractant-containing transferable adhesive layers or by the application of individual sections that can be activated separately from each other. The pictures show:

Fig. 1: composite of transferable adhesive layer and carrier film

Fig. 2: composite in the form of a roll

Fig. 3: Three-layer transfer insect glue laminate after application of a paper support Fig. 4: Device for dispensing arbitrarily long sections of a composite of transferable adhesive layer and carrier film

LIST OF REFERENCE NUMBERS

(1) = top of the carrier sheet

(2) = underside of the carrier film

(3) = top of the transferable adhesive layer

(4) = roll core

(5) = underlay

(6) = cutting device

(7) = fixing aid

(8) = length measuring device

Claims

claims

A composite comprising a transferable adhesive layer and a carrier film, characterized in that the transferable adhesive layer and the carrier film are connected to one another in a non-permanent manner.

2. Composite according to claim 1, characterized in that the transferable adhesive layer contains a pressure-sensitive adhesive.

3. The composite of claim 1 or 2, characterized in that the pressure-sensitive adhesive is a single substance from the group of pressure-sensitive adhesives, the PSA adhesives and solvent-based pressure-sensitive adhesives or a mixture thereof and optionally at least one additive from the group of tackifiers, plasticizers, fillers, crosslinkers , Antioxidants, pigments and dyes.

4. Composite according to one or more of the preceding claims, characterized in that the pressure-sensitive adhesive is a natural rubber, an ABA block copolymer (where A = styrene, B = isoprene, butadiene or ethylene), a styrene-butadiene copolymer, polyisobutylene , Polybutylene, a mixture of polyisobutylene and polybutylene, an ethylene-vinyl acetate copolymer having a vinyl acetate content of between 15 and 95%, a polyacrylate or a silicone.

5. Composite according to one or more of the preceding claims, characterized in that the transferable adhesive layer contains an ingredient which can be released therefrom.

6. Composite according to one or more of the preceding claims, characterized in that the proportion of the ingredient which can be released from the transferable adhesive layer, between 0.1 and 70% by weight, preferably between 0.5 and 25 wt. % lies.

7. Composite according to one or more of the preceding claims, characterized in that the ingredient is an active ingredient, a repellent, an attractant, a fragrance or a mixture thereof.

8. Composite according to one or more of the preceding claims, characterized in that the transferable adhesive layer has a thickness between 0 and 500 microns, preferably between 15 and 250 microns.

9. Composite according to one or more of the preceding claims, characterized in that the transferable adhesive layer has a surface coverage of between 10 and 100%, preferably between 20 and 50%.

10. Composite according to one or more of the preceding claims, characterized in that the carrier film has a width between 1 and 200 cm.

11.Verbund according to one or more of the preceding claims, characterized in that the transferable adhesive layer has a width which is smaller by 2 to 20 mm than the width of the carrier film.

12. Composite according to one or more of the preceding claims, characterized in that the carrier film has an upper side and a lower side, both of which are equipped to a different degree dehäsiv.

13. Composite according to one or more of the preceding claims, characterized in that the carrier film is paper, plastic, metal or a composite foil of these materials.

14. Composite according to one or more of the preceding claims, characterized in that the carrier film is paper with a basis weight between 10 and 150 g / m ² , preferably between 48 and 96 g / m ² .

15. Composite according to one or more of the preceding claims, characterized in that the release force, which is required for the removal of the transferable adhesive layer from the top of the carrier film, between 0.06 and 0.14 N / 40 mm, preferably between 0.08 and 0.12 N / 40 mm.

16. Composite according to one or more of the preceding claims, characterized in that the transferable adhesive layer is coreless.

17. Composite according to one or more of the preceding claims, characterized in that it is present as a roll of a film web or as a stack of individual composites.

18. Composite according to one or more of the preceding claims, characterized in that the release force, which is required for the removal of the transferable adhesive layer from the underside of the carrier film, is smaller than the release force required for stripping the transferable adhesive layer from the top of the carrier film and is between 0.02 and 0.10 N / 40 mm, preferably between 0.04 and 0.08 N / 40 mm.

19. A method for producing a composite of transferable adhesive layer and carrier film, comprising the steps of applying a pressure-sensitive adhesive mass to a carrier film.

20. The method according to claim 19, characterized in that the application is carried out in the hotmelt, in the solvent, in the spray or in the thread application process.

21. The method according to claim 19 or 20, characterized in that it is continuous or discontinuous.

22. The method according to one or more of claims 19 to 21, characterized in that the composite of transferable adhesive layer and carrier film is transported by two opposing rollers, as long as the adhesive layer still has a flowable consistency.

23. The method according to one or more of claims 19 to 22, characterized in that the composite of transferable adhesive layer and carrier film is wound around a roll core, so that the underside of the carrier film covers the top of the transferable adhesive layer.

24. Use of a composite of transferable adhesive layer and carrier film, which are connected in a non-permanent manner, for applying an adhesive layer to a substrate.

25. Use according to claim 24, characterized in that the adhesive layer contains an ingredient which is released after removal of the carrier film from the adhesive layer.

26. Use according to claim 24 or 25, characterized in that the ingredient contained in the adhesive layer from the group of active ingredients, repellents, Attaraktantien, fragrances and mixtures thereof is selected.

27. An apparatus for dispensing arbitrarily long sections of a composite of transferable adhesive layer and carrier film, comprising a composite of transferable adhesive layer and carrier film in the form of a roll on a roll core, a holder for the roll core and a cutting device.

28. The apparatus according to claim 27, characterized in that in the composite, the carrier film has a greater width than the transferable adhesive layer, so that it is not in contact with the adhesive layer on their longitudinal sides.

29. The device according to claim 27 or 28, characterized in that it contains at least one structural element (Fixierhilfe), which is capable of on the to exert a force not in contact with the adhesive layer longitudinal sides of the carrier film to facilitate transport of the carrier film.

30. The device according to one or more of claims 27 to 29, characterized in that it is present as a hand dispenser, Tischabroller, Standabroller, Wandabroller or electronic self-adhesive tape dispenser.