Animal ear tag and use of an animal ear tag with an antimicrobial additive

Abstract

Animal ear tag (1) for marking farm animals, in particular cattle, pigs, goats and sheep, with the following characteristics: - the animal ear tag (1) comprises a plastic material; - an antimicrobial additive is incorporated into the plastic; - the animal ear tag (1) comprises a first tag part (2) and a second tag part (3) which are designed to be attached to each other and to an ear (4) of the farm animal; - the first trademark part (2) comprises the plastic into which the antimicrobial additive is incorporated and the second trademark part (3) comprises the plastic into which the antimicrobial additive is incorporated; - the first mark part (2) comprises a mark body (5) and a pin (6) which is arranged at its first end (6a) on the mark body (5) and which comprises a point (7) and / or cutting edge at its second end (6b); - the second mark part (3) comprises a mark body (8) and a receiving element (9) which is arranged on the mark body (8); - the pin (6) of the first tag part (2) is designed to be pushed through an ear (4) of the farm animal and into the receiving element (9) of the second tag part (3); - the identifier body (5) of the first trademark part (2) comprises the plastic into which the antimicrobial additive is incorporated; and - the identifier body (8) of the second trademark part (3) comprises the plastic into which the antimicrobial additive is incorporated; - the antimicrobial additive is evenly distributed throughout the plastic; - the antimicrobial additive includes a silver component.

Description

[0001] The invention relates to an animal ear tag for marking farm animals such as cattle, pigs, goats and sheep and a use of an animal ear tag comprising an antimicrobial additive, wherein the antimicrobial additive contains a silver component.

[0002] Animal ear tags play a crucial role in modern agriculture, fulfilling a variety of functions essential for the efficient and safe management of livestock. These tags, marked with individual numbers and / or codes, allow for the unique identification of each animal, which is vital for health monitoring, breeding programs, and herd management. The ability to uniquely identify each animal is also essential for complete traceability during disease outbreaks, supporting disease control and public health protection. Furthermore, animal ear tags help farms comply with legal requirements for livestock identification, which often aim to improve food safety and traceability.The precise documentation and record-keeping made possible by the use of animal ear tags is also important for the certification of meat quality and other specific characteristics. Ultimately, these tags contribute to more efficient farm management by providing valuable data for evaluating herd performance, leading to increased productivity and improved management practices.

[0003] The application of animal ear tags is an important part of modern livestock farming, but it also carries specific risks, particularly regarding the risk of infection. The ear perforation required for tagging can be an entry point for bacteria and other pathogenic microorganisms. This risk is exacerbated by the fact that livestock live in environments where they can easily come into contact with pathogens. If the ear tags are not applied under sterile conditions or if aftercare of the wound is neglected, the risk of infection increases, which can not only affect the health and welfare of the affected animal but also lead to the spread of disease within the herd.Furthermore, the treatment of such infections can entail additional costs and workload for the operators and in some cases even lead to permanent health damage or the loss of the farm animal.

[0004] AT 518 996 B1 describes an animal ear tag with a spike, the spike being formed from several parts stacked together and surrounded by a sheath. An antibacterial and antiseptic agent is incorporated into or coated with the sheath.

[0005] The CN 1 06 957 522 A describes an animal ear tag into which an antibacterial agent has been incorporated.

[0006] The CN 2 18 789 786 U describes an animal ear tag into which an antibacterial agent has been incorporated.

[0007] WO 2015 / 051020A1 describes a masterbatch comprising a polymer carrier, an antimicrobial agent, and a migration-assisting agent. The migration-assisting agent ensures that the concentration of the antimicrobial agent is higher on the surface than in the interior of the masterbatch.

[0008] The object of the present invention is therefore to create an animal ear tag that reduces the risk of infection for farm animals when attaching the ear tag.

[0009] The problem is solved by the animal ear tag according to claim 1. Claims 2 to 15 specify advantageous embodiments of the animal ear tag according to the invention. Claim 16 describes a use of such an animal ear tag comprising an antimicrobial additive, wherein the antimicrobial additive contains a silver component.

[0010] The animal ear tag according to the invention is used for marking farm animals, in particular cattle, pigs, goats, and sheep. The animal ear tag comprises a plastic material in which an antimicrobial additive is incorporated. The animal ear tag comprises a first tag part and a second tag part, which are designed to be attached to each other and to an ear of the farm animal. The first tag part comprises the plastic material in which the antimicrobial additive is incorporated, and the second tag part comprises the plastic material in which the antimicrobial additive is incorporated. The first tag part comprises a tag body and a pin, the first end of which is attached to the tag body and the second end of which has a point and / or cutting edge. The second tag part comprises a tag body and a receiving element, which is attached to the tag body.The pin of the first tag component is designed to be pushed through the ear of the livestock and into the receiving element of the second tag component. The tag body of the first tag component comprises the plastic in which the antimicrobial additive is incorporated. The tag body of the second tag component also comprises the plastic in which the antimicrobial additive is incorporated. The antimicrobial additive is evenly distributed within the plastic. The antimicrobial additive includes a silver component.

[0011] It is particularly advantageous that an antimicrobial additive is incorporated into the plastic, as this inhibits or prevents the growth and spread of microorganisms such as bacteria, fungi, and algae. Such an animal ear tag allows for the continuous presence of antimicrobial agents, protecting the immediate area around the wound. This minimizes the risk of pathogenic microorganisms entering the wound and causing infection. The long-lasting effect of these additives ensures that protection is maintained over an extended period, improving the chances of healing and promoting the overall well-being of the farm animal.By combating the risk of infection directly at the source, antimicrobial additives, especially those using silver ions, help protect the health of livestock, reduce the use of (further) antibiotics, and ultimately contribute to safer and more efficient agricultural practices. It is particularly advantageous that the antimicrobial additive is not only applied to the surface of the ear tag, for example by spraying it, but is also incorporated into the plastic, thus maintaining its effectiveness over a longer period – even if the surface of the plastic is worn away.

[0012] The animal ear tag according to the invention comprises the plastic. In principle, the animal ear tag can comprise exactly one plastic or several, in particular different, plastics. The antimicrobial additive can be incorporated into all, some, or only one of the plastics.

[0013] In a beneficial training program, the first brand component is structured as a single unit. Alternatively, or additionally, the second brand component is also structured as a single unit.

[0014] In a further advantageous embodiment, the first brand component is composed of multiple parts, wherein one, several, or all parts of the multi-part first brand component comprise the plastic in which the antimicrobial additive is incorporated. Additionally or alternatively, the second brand component is composed of multiple parts, wherein one, several, or all parts of the multi-part second brand component comprise the plastic in which the antimicrobial additive is incorporated.

[0015] In an advantageous further development, the first brand component is formed through a single injection molding process step. Additionally or alternatively, the second brand component is formed through a single injection molding process step.

[0016] According to the invention, the first tag part comprises a tag body and a pin, the pin being arranged, i.e., attached, to the tag body at its first end and comprising a point and / or cutting edge at its second end. The second tag part comprises a tag body and a receiving element, which is arranged, i.e., attached, to the tag body. The pin, i.e., the point and / or cutting edge, of the first tag part is designed to be pushed through the ear of the farm animal and pressed into the receiving element of the second tag part, forming a clamping, snap-fit, and / or positive-locking connection. In this way, the animal ear tag can be attached to the ear of the farm animal very easily by joining the first and second tag parts together.

[0017] In an advantageous further development, the connection of the pin of the first brand part with the receiving element of the second brand part cannot be detached without destruction.

[0018] In an advantageous further development, the connection of the pin of the first brand part with the receiving element of the second brand part cannot be detached without destruction.

[0019] In an advantageous further development, the pin of the first brand part comprises at least one or at least two barbs that engage in a corresponding counterpart in the receiving element of the second brand part and prevent the first brand part from being pulled away from the second brand part.

[0020] In an advantageous further development, the pin and / or the receiving element is deformed after the connection has been made.

[0021] In an advantageous further development, the pin is arranged at an end area of ​​the identifier body of the first brand part, wherein the identifier body widens from this first end area.

[0022] In an advantageous further development, the receiving element is arranged at an end area of ​​the identifier body of the second trademark part, wherein the identifier body widens from this end area.

[0023] In an advantageous further development, the shape of the first brand part corresponds to the shape of the second brand part.

[0024] In a beneficial further development, the surface area of ​​the first brand part is smaller than the surface area of ​​the second brand part. Alternatively, the surface area of ​​the first brand part is larger than the surface area of ​​the second brand part. Alternatively, both surfaces are approximately the same size.

[0025] In a preferred embodiment, the body of the first part of the stamp is printed. Alternatively, the body of the second part of the stamp is also printed. Preferably, laser printing is used.

[0026] In an advantageous training course, an RFID tag is integrated into the first part of the brand and / or the second part of the brand.

[0027] In an advantageous embodiment, the pin of the first tag component comprises the plastic in which the antimicrobial additive is incorporated. Additionally or alternatively, the receiving element of the second tag component comprises the plastic in which the antimicrobial additive is incorporated. If the pin and / or the receiving element comprise the plastic in which the antimicrobial additive is incorporated, the antimicrobial agents can become active directly in the immediate vicinity of the wound. The inventive use of the antimicrobial additive in the tag body also reduces the risk of microorganisms penetrating the wound and further ensures that the animal ear tag is more resistant to external influences, such as these microorganisms, and can remain in place on the animal for a longer period. The structural integrity of the animal ear tag is thus maintained for a longer time.

[0028] In an advantageous further development, the first part of the tag is composed of more than 95% plastic, into which the antimicrobial additive is incorporated. Additionally or alternatively, the second part of the tag is also composed of more than 95% plastic, into which the antimicrobial additive is incorporated. This allows for cost-effective production and easy handling of the animal ear tag. Generally, plastic is a material that offers high durability and resistance to various environmental conditions. It is resistant to water, extreme temperatures, and UV radiation, meaning that plastic ear tags retain their shape and legibility under a wide range of climatic conditions. Furthermore, the flexibility of the plastic means that the ear tags are not easily damaged even by physical stress, such as that which occurs when livestock move around or rub against fences and vegetation.Another advantage is their versatility in design. Plastic ear tags can be produced in various colors and sizes, facilitating additional visual identification of livestock and supporting herd organization according to criteria such as age, sex, or breeding status. The plastic surface also allows for clear and durable marking with individual identification numbers, barcodes, or even QR codes, compatible with modern livestock management and traceability technologies.

[0029] In an advantageous embodiment, the identifier body of the first brand part has a maximum height h1, which is preferably greater than 4.5 cm, 5 cm, 5.5 cm, or greater than 6 cm, and preferably less than 6.5 cm or less than 6 cm. Preferably, the maximum height h1 is 5.9 cm. The identifier body of the first brand part has a maximum width b1, which is preferably greater than 4.5 cm, 5 cm, 5.5 cm, or greater than 6 cm, and preferably less than 6.5 cm or less than 6 cm. Preferably, the maximum width b1 is 5.6 cm. The pin of the first brand part has a length l1, which is greater than 1.2 cm, 1.5 cm, 2 cm, or greater than 2.5 cm, and preferably less than 2.3 cm. Preferably, the length l1 is 2.29 cm.

[0030] In an advantageous embodiment, the identifier body of the second brand part has a maximum height h2, which is preferably greater than 6 cm, 6.5 cm, 7 cm, 7.5 cm, or greater than 8 cm, and preferably less than 8.5 cm or less than 8 cm. Preferably, the maximum height h2 is 7.8 cm. The identifier body of the second brand part has a maximum width b2, which is preferably greater than 4.5 cm, 5 cm, 5.5 cm, or greater than 6 cm, and preferably less than 6.5 cm or less than 6 cm. Preferably, the maximum width b2 is 5.6 cm. The receiving element of the second brand part has a length l2, which is greater than 0.5 cm, 0.8 cm, 1 cm, or greater than 1.5 cm, and preferably less than 2 cm or less than 1.5 cm. Preferably, the length l2 is 1.12 cm.

[0031] In an advantageous embodiment, the identifier body of the first and / or second brand part has a round cross-sectional shape or is approximately round. Preferably, the diameter is more than 20 mm, 25 mm, or more than 30 mm, and more preferably, the diameter is less than 35 mm, 30 mm, or less than 25 mm. Preferably, the diameter is 28 mm. The pin of the first brand part is preferably longer than 15 mm, 20 mm, or longer than 25 mm. Preferably, it is shorter than 28 mm, 25 mm, or shorter than 21 mm. Preferably, the pin is 21 mm or 25 mm long. Preferably, the identifier body of the first and second brand parts together weigh more than 3 g and less than 4 g. Preferably, they weigh 3.4 g.

[0032] In an advantageous embodiment, the identifier body of the first and / or second brand part has a maximum height and / or a maximum width of more than 20 mm, 25 mm, or more than 30 mm, and preferably the maximum height and / or maximum width is less than 35 mm, 30 mm, or less than 25 mm. Preferably, the maximum height and / or maximum width is 28 mm. The pin of the first brand part is preferably longer than 15 mm, 20 mm, or longer than 25 mm. Preferably, it is shorter than 28 mm, 25 mm, or shorter than 21 mm. Preferably, the pin is 21 mm long. Preferably, the identifier body of the first and second brand parts together weigh more than 3 g and less than 4 g. Preferably, they weigh 3.5 g.

[0033] In an advantageous embodiment, the identifier body of the first and / or second brand part has a maximum height of more than 80 mm, 90 mm, 100 mm, 110 mm, or more than 120 mm, and preferably the maximum height is less than 125 mm, 115 mm, 105 mm, or less than 95 mm. Preferably, the maximum height is 102 mm. Additionally or alternatively, the identifier body of the first and / or second brand part has a maximum width of more than 50 mm, 60 mm, 70 mm, 80 mm, or more than 90 mm, and preferably the maximum width is less than 95 mm, 85 mm, 75 mm, or less than 65 mm. Preferably, the maximum width is 76 mm. The pin of the first brand part is preferably longer than 15 mm, 20 mm, or longer than 25 mm. Preferably, it is shorter than 28 mm, 25 mm, or shorter than 21 mm. Preferably, the pin is 21 mm long. Preferably, the identification body of the first and second stamp parts together weigh more than 15 g and less than 25 g. Preferably, they weigh 19.9 g.

[0034] In an advantageous further development, the marking bodies of the first and / or second part of the mark have a wall thickness of 1 mm to 1.4 mm. This applies to the printed areas that are free of the pen or the receiving element.

[0035] In an advantageous further development, the dimensions of the marking bodies of the first and second trademark parts are identical or differ from each other by less than 5%.

[0036] According to the invention, the antimicrobial additive is uniformly distributed throughout the plastic. This means that the amount of the antimicrobial additive inside the plastic neither decreases nor increases compared to the amount of the antimicrobial additive on the surface of the plastic.

[0037] In a further advantageous development, the concentration of the antimicrobial additive is 2% or less than 2% of the total weight of the plastic. This means, for example, that 2 g or less of the antimicrobial additive is added to 100 g of plastic.

[0038] In a beneficial further development, the concentration of the antimicrobial additive is in the range of 0.2% to 0.6% of the total weight of the plastic. This means, for example, that between 0.2 g and 0.6 g of the antimicrobial additive are added to 100 g of plastic.

[0039] According to the invention, the antimicrobial additive comprises a silver component. The antimicrobial additive is therefore preferably silver-based, and the antimicrobial effect is preferably achieved by silver ions (Ag₂). +The antimicrobial additive thus acts primarily due to the silver ions. The silver component can be, for example, elemental silver or organic or inorganic silver salts (e.g., silver oxide, silver phosphate, silver chloride, silver sulfate, silver-calcium sodium phosphate, silver-zirconium compounds) or mixtures thereof. Preferably, and more preferably, the silver component comprises one or more inorganic silver salts. In a preferred embodiment, the silver component comprises and more preferably consists of silver oxide.

[0040] The presence of silver ions from the additive effectively suppresses a wide range of bacteria, viruses, and fungi, significantly reducing the risk of infection at the puncture site after ear tagging. Another advantage of silver ions as an antimicrobial agent lies in their long-lasting effect. Silver ions are present continuously over an extended period, providing sustained protection against the colonization and proliferation of pathogens. This sustained effect is particularly valuable in livestock farming, where a long-term solution for minimizing infection risks is essential. Furthermore, silver ions are effective against a broad spectrum of microorganisms without promoting resistance to the extent that can occur with conventional antibiotics. This property makes silver ions a sustainable option in the fight against infections, especially in times of increasing antibiotic resistance.Silver-based additives are also able to enhance the effectiveness of other antimicrobial and hygienic measures by forming an additional protective layer that prevents the transmission of infections. This combination of effectiveness, long-lasting effect, and broad-spectrum activity makes the use of antimicrobial additives containing a silver component a valuable strategy for reducing infection risks in animal husbandry. At the same time, sufficiently high temperature resistance is ensured, allowing the antimicrobial additive to be incorporated into the plastic using an injection molding process.

[0041] In a particularly advantageous development, the antimicrobial additive contains a silver component within a glass-ceramic carrier. A key benefit of this technology lies in the controlled presence of silver ions, facilitated by the glass-ceramic carrier. Glass-ceramic is a material characterized by its porous structure, which encapsulates the embedded silver component and regulates the presence of silver ions evenly over an extended period. This ensures a sustained antimicrobial effect without requiring a high initial concentration, minimizing the risk of skin irritation or toxic effects. Another advantage of this technique is the system's high stability. Glass-ceramic carriers protect the silver component from premature reaction or degradation, thus increasing its effectiveness and longevity.This means that the antimicrobial efficacy is maintained throughout the entire lifespan of the product, such as an animal ear tag. Furthermore, the use of glass-ceramic allows for precise control over the size and distribution of the pores, which further optimizes the exposure of the silver ions. This helps to achieve optimal antimicrobial activity specifically tailored to the infection risk, without harming the environment or the animal.

[0042] In a further advantageous formulation, the antimicrobial additive is based on wet-milled inorganic carrier particles containing a silver component. These inorganic carrier particles have a smooth surface and are produced by wet milling. Wet milling is a process in which solid materials are pulverized in a liquid to create extremely fine particles. This process leads to a number of positive effects on the properties of the glass-ceramic carrier. First, wet milling allows for precise control over the particle size and distribution of the glass-ceramic material. This is crucial because a uniform and fine particle size increases the surface area, resulting in more efficient exposure of the embedded silver ions.An increased surface area facilitates a more uniform interaction between the silver ions and the microorganisms, thereby enhancing the antimicrobial efficacy of the additive. Furthermore, wet milling improves the homogeneity of the material. The fine and uniform distribution of particles within the glass-ceramic matrix ensures that the silver ions are evenly distributed. This results in consistent antimicrobial activity throughout the entire material, which is advantageous for applications requiring reliable and long-lasting antimicrobial protection. The fine particles produced by wet milling also promote better bonding and integration of the glass-ceramic into the final product. This allows for a more homogeneous distribution of the antimicrobial additive within the plastic.This also improves the mechanical stability and longevity of the antimicrobial additive, which is particularly important in areas such as animal husbandry, where materials are exposed to harsh conditions.

[0043] In a particularly advantageous further development, the inorganic carrier particles comprise glass particles with a mean particle size of 0.01 µm to 100 µm and a silver component content of 0.01 to 5 wt.% or up to 10 wt.%. The use of different carrier particle sizes allows smaller particles (near the lower end of the spectrum) to have a higher surface area relative to their volume, which improves the exposure of silver ions and thus the antimicrobial activity. These fine particles can act quickly and effectively against microorganisms. Larger particles (at the upper end of the spectrum) provide a longer presence of the silver ions, resulting in a sustained antimicrobial effect over a longer period. This combination of rapid and long-lasting action is ideal for covering a wide range of applications. The specified range of silver component content is 0.01 to 5 wt.% or up to 10 wt.%.-% offers flexibility in dosage, allowing for effective control of the balance between antimicrobial efficacy and material costs. A lower silver component content may be sufficient for applications requiring moderate antimicrobial activity, while a higher silver component content can be advantageous for more demanding applications requiring strong antimicrobial activity. This flexibility in concentration enables cost-effective adaptation to specific requirements without compromising safety or efficacy. For example, the silver component content can be varied for animal ear tags used on different livestock.Furthermore, the careful selection of particle size and silver component content minimizes potential risks to humans and the environment by ensuring that the presence of silver ions remains limited to the necessary level to achieve an effective antimicrobial effect without overdosing or unnecessary exposure.

[0044] In a particularly advantageous embodiment, the inorganic carrier particles are boron-containing and / or phosphate-containing glass particles that contain a silver salt as the silver component. In a further advantageous embodiment, the inorganic carrier particles are boron-containing and / or phosphate-containing glass particles that contain silver oxide as the silver component. The specific material combination of boron-containing and / or phosphate-containing glass particles as inorganic carrier particles and silver salt or silver oxide as the silver component improves the efficacy and stability of the antimicrobial agents. The inclusion of boron-containing or phosphate-containing glass particles in the carrier particles provides an excellent basis for the controlled release of silver ions. The bioactive nature of these glass particles can enhance the interaction with microorganisms and thus increase the antimicrobial efficiency of the silver ions.The combination with silver oxide or silver salts as an antimicrobial component utilizes the strong disinfectant properties of silver. Silver oxide and silver salts are effective in killing or inhibiting a wide range of microorganisms, including bacteria, fungi, and some viruses. Furthermore, the possible processing temperature increases when using boron-containing and / or phosphate-containing glass particles.

[0045] In an advantageous further training, the antimicrobial additive is in powder form.

[0046] In a particularly advantageous formulation, the antimicrobial additive is a crystalline powder. A crystalline powder is characterized by its uniform particle size and shape, which allows for even distribution and embedding within the plastic. This homogeneity ensures that the antimicrobial effect is consistent throughout the entire material. A further advantage lies in the specific surface structure and porosity that crystalline powders can exhibit. These properties enhance the antimicrobial efficacy of the additive by providing a larger surface area for interaction with microorganisms. This results in rapid and effective antimicrobial activity, helping to inhibit the growth and spread of bacteria, fungi, and other harmful microorganisms.The crystalline structure also allows for precise dosing and easy adjustment of the antimicrobial additive's concentration to meet the specific requirements of various applications. This is crucial for developing customized solutions that are both effective and economical. Finally, the powder form offers advantages in terms of compatibility with different production processes. In powder form, the antimicrobial additive can be easily added to the plastic.

[0047] In a beneficial development, 98% of the antimicrobial additive particles are smaller than 5 µm and 50% are smaller than 2 µm. This small particle size allows for a significantly larger surface area relative to the particle volume. This increased surface area enhances the interaction between the antimicrobial additive and microorganisms, resulting in a more efficient and faster antimicrobial effect. Small particles can react more quickly and extensively with bacteria, viruses, or fungi, increasing the likelihood of effectively killing or inhibiting the growth of these microorganisms. Furthermore, the fineness of the particles improves their dispersibility in various media or carrier materials. The fine particles can be distributed more evenly throughout the plastic, resulting in a consistent antimicrobial protective layer across the entire volume.The small particle size also facilitates the processing of the antimicrobial additive. Fine powders tend to mix better with other materials and can be more easily integrated into production processes, such as plastic injection molding, without negatively affecting the physical properties of the final product.

[0048] In a beneficial further development, the refractive index of the antimicrobial additive is 1.507 with a deviation of ±10%. This refractive index is approximately the same as that of thermoplastic polyurethane, which ranges from about 1.51 to 1.54. Therefore, the refractive index of the additive is close to that of the plastic, minimizing the scattering or distortion of light that can occur when materials with different optical densities are combined. This would be advantageous, for example, in transparent animal ear tags.

[0049] In a further development, the plastic is a thermoplastic polyurethane (TPU). Thermoplastic polyurethane has exceptional durability and abrasion resistance, making it ideal for products subjected to heavy use, such as animal ear tags. Furthermore, thermoplastic polyurethane is waterproof and resistant to microorganisms, making it suitable for outdoor applications, especially with livestock. Another significant advantage is the environmental friendliness of thermoplastic polyurethane. It is generally recyclable and can be processed without the use of plasticizers.

[0050] In a favorable development scenario, the plastic is a thermoplastic polyurethane with a bio-based content of 32%, with a 3% tolerance. Such a bio-based content in thermoplastic polyurethane underscores the commitment to environmentally friendly production processes and products by utilizing renewable resources instead of relying solely on fossil fuels. This contributes to reducing carbon emissions associated with plastics production and promotes sustainability in material manufacturing. It is also conceivable that the bio-based content could exceed 40%, 50%, 60%, 70%, or even 80%.

[0051] In a beneficial further training course, the animal ear tag is made up of more than 95% plastic.

[0052] In an advantageous advanced training, the antimicrobial additive is odorless.

[0053] In a further development, the plastic contains iodine in addition to the antimicrobial additive. This results in a wound-healing and disinfecting effect.

[0054] In a further advantageous formulation, the bulk density of the antimicrobial additive is 1050 kg / m³. 3 up to 1100 kg / m² 3 .

[0055] In an advantageous further development, the hardness of the thermoplastic polyurethane is: A1: 95 (Shore A / D), according to ISO 868.

[0056] In an advantageous further development, the specific density of the thermoplastic polyurethane is: 1.17 g / cm³ 3 , according to ISO 2781.

[0057] In an advantageous further development, the tensile strength of the thermoplastic polyurethane is: 36 MPa, according to ISO 527-2 / 5A / 200.

[0058] In an advantageous further development, the ultimate elongation of the thermoplastic polyurethane is 415%, according to ISO 527-2 / 5A / 200.

[0059] In an advantageous further development, the abrasion resistance of the thermoplastic polyurethane is: 28 mm 3 , according to ISO 4649-A.

[0060] The animal ear tag according to the invention can be manufactured particularly well when ESTANE® ECO 12T95 from The Lubrizol Corporation is used as the plastic and Sanitized® BC A 21-41 from Sanitized AG as the antimicrobial additive. Both materials are fed together into a plastic injection molding machine. EP 2 016 825 A1 describes the production of an antimicrobial additive with a silver component. The content of that patent application, in particular the production of the antimicrobial additive and its composition, is incorporated by reference into this application.

[0061] A process for manufacturing an animal ear tag comprises several steps. In the first step, granules of thermoplastic polyurethane with a biological content of 32% (with a tolerance of ±3%) and an antimicrobial additive in the form of a crystalline powder are added to a mixer. The antimicrobial additive constitutes 0.2% to 2% of the total weight of the thermoplastic polyurethane and is dosed, in particular, by means of a gravimetric dosing hopper, side extruder, or tumbler. In the second step, the thermoplastic polyurethane granules and the antimicrobial additive are mixed together. In the third step, the mixture is fed into a plastic injection molding machine. In the fourth step, the animal ear tag is manufactured by the plastic injection molding machine.In the event that the animal ear tag comprises a first and a second tag part, both tag parts can be produced simultaneously using a common injection mold or in different injection molds.

[0062] The use of an antimicrobial additive comprising a silver component is for the manufacture of an animal ear tag.

[0063] The use of the animal ear tag according to the invention, comprising an antimicrobial additive, wherein the antimicrobial additive contains a silver component, serves to mark farm animals, in particular cattle, pigs, goats and sheep.

[0064] The invention is described below by way of example only, with reference to the drawings. The drawings show: Fig. 1A, Fig. 1B: Different views of the first part of the animal ear tag with a tag body and a pin, Fig. 2A, Fig. 2B, Fig. 2C: various views of a second part of the animal ear tag with a tag body and a receiving element; Fig. 3A, Fig. 3B: various views showing the first and second parts of the trademark joining together and on the ear of a farm animal; and Fig. 4: a flowchart showing a process for manufacturing the animal ear tag.

[0065] The following figures explain the structure of the animal ear tag 1 in more detail. The animal ear tag 1 is used to mark farm animals. The animal ear tag 1 comprises a first tag part 2 and a second tag part 3. The first tag part 2 and the second tag part 3 can be attached to each other and to an ear 4 (see Fig. 3A, Fig. 3B) of a farm animal.

[0066] The Fig. 1A and Fig. Figure 1B shows the first part 2 of the animal ear tag 1. The first part 2 comprises a tag body 5 and a pin 6, the first end 6a of which is attached to the tag body 5 and the second end 6b of which includes a point 7 and / or cutting edge. The pin 6 is located at one end of the tag body 5, with the tag body 5 widening from this first end. Fig. 1B shows the reverse side of the license plate body 5 from Fig. 1A.

[0067] The trademark body 5 of the first trademark part 2 has a maximum height h1, which is preferably greater than 4.5 cm, 5 cm, 5.5 cm, or greater than 6 cm, and preferably less than 6.5 cm or less than 6 cm. Preferably, the maximum height h1 is 5.9 cm. The trademark body 5 of the first trademark part 2 has a maximum width b1, which is preferably greater than 4.5 cm, 5 cm, 5.5 cm, or greater than 6 cm, and preferably less than 6.5 cm or less than 6 cm. Preferably, the maximum width b1 is 5.6 cm.

[0068] The pin 6 of the first mark part 2 has a length l1 that is greater than 1.2 cm, 1.5 cm, 2 cm, or greater than 2.5 cm, and preferably less than 2.3 cm. Preferably, the length l1 is 2.29 cm.

[0069] The tag body 5 and / or the pin 6 of the first tag part 2 comprise a plastic material in which an antimicrobial additive is incorporated. Preferably, the plastic of the tag body 5 and the pin 6 is the same. However, different plastics may also be used. It is also conceivable that the tip 7 is made of or comprises a different material, for example, a metal, compared to the rest of the pin 6 or the tag body 5.

[0070] The identification body 5 of the first trademark part 2 has a thickness of approximately 1 mm.

[0071] The Fig. 2A, Fig. 2B and Fig. Figure 2C shows the second tag part 3 of the animal ear tag 1. The second tag part 3 comprises a tag body 8 and a receiving element 9, which is arranged on the tag body 8. The receiving element 9 is designed to receive the pin 6 of the first tag part 2.

[0072] The identifier body 8 of the second trademark part 3 has a maximum height h2, which is preferably greater than 6 cm, 6.5 cm, 7 cm, 7.5 cm, or greater than 8 cm, and preferably less than 8.5 cm or less than 8 cm. Preferably, the maximum height h2 is 7.8 cm. The identifier body 8 of the second trademark part 3 has a maximum width b2, which is preferably greater than 4.5 cm, 5 cm, 5.5 cm, or greater than 6 cm, and preferably less than 6.5 cm or less than 6 cm. Preferably, the maximum width b2 is 5.6 cm.

[0073] The receiving element 9 of the second mark part 3 has a length l2 that is greater than 0.5 cm, 0.8 cm, 1 cm or greater than 1.5 cm and preferably less than 2 cm or less than 1.5 cm. Preferably the length l2 is 1.12 cm.

[0074] The license plate body 8 and / or the receiving element 9 of the second trademark part 3 comprise a plastic material in which an antimicrobial additive is incorporated. Preferably, the plastic of the license plate body 8 and the receiving element 9 is the same. However, different plastics may also be used.

[0075] The identification body 8 of the second trademark part 3 has a thickness of approximately 1 mm.

[0076] Fig. 2C shows a reverse side of the Fig. 2A and Fig. 2B.

[0077] The Fig. 3A and Fig. Figure 3B shows various views illustrating the joining of the first and second tag parts 2, 3 to each other and to the ear 4 of the farm animal. Both tag parts 2, 3 are preferably pressed together with pliers, with the ear 4 of the farm animal positioned between the two tag parts 2, 3. Both tag parts 2, 3 move towards each other, as indicated by the arrows in Figure 3B. Fig. 3A is shown.

[0078] The pin 6 of the first stamp part 2 comprises at least one or at least two barbs 10 which engage in a corresponding counterpart in the receiving element 9 of the second stamp part 3 and prevent the first stamp part 2 from being pulled away from the second stamp part 3.

[0079] The pin 6 of the first stamp part 2 may be partially hollow.

[0080] At least part of the pin 6 and the identifier body 5 of the first brand part 2 are formed in one piece and preferably comprise the same plastic.

[0081] The plastic and the antibacterial additive can be structured according to the explanations in the introductory description.

[0082] Fig.Figure 4 shows a flowchart illustrating a process for manufacturing the animal ear tag 1. In the first process step S1, granules of thermoplastic polyurethane with a biological content of 32% (with a deviation of ±3%) and an antimicrobial additive in the form of a crystalline powder are added to a mixer. The antimicrobial additive comprises 0.2% to 2% of the total weight of the thermoplastic polyurethane and is dosed, in particular, by means of a gravimetric dosing hopper, side extruder, or tumbler. In the second process step S2, the thermoplastic polyurethane granules and the antimicrobial additive are mixed together. In the third process step S3, the mixture is fed into a plastic injection molding machine. In the fourth process step S4, the animal ear tag 1 is manufactured by the plastic injection molding machine.In the event that the animal ear tag 1 comprises a first and a second tag part 2, 3, both tag parts 2, 3 can be produced simultaneously using a common injection mold or in different injection molds.

[0083] The invention is not limited to the described embodiments. Within the scope of the invention, all described and / or drawn features can be combined with one another as desired. Reference symbol list 1 Animal ear tag 2 First brand part 3 Second part of the brand 4 ears (of a farm animal) 5. Identification mark body (of the first part of the trademark) 6 pens (of the first part of the brand) 6a First end (of the pen) 6b Second end (of the pen) 7 Tip (of the pen) 8 License plate body (of the second part of the trademark) 9 Recording element (of the second part of the mark) 10 barbs h1 Height of license plate body (first part of the license plate) b1 Wide license plate body (first part of the trademark) l1 Length of pen h2 Height of license plate body (second part of the license plate) b2 Wide license plate body (second part of the trademark) l2 Length of receiving element S1, S2, S3, S4 Procedure steps

Claims

[1] Animal ear tag (1) for marking farm animals, especially cattle, pigs, goats and sheep, with the following features: - the animal ear tag (1) comprises a plastic material; - an antimicrobial additive is incorporated into the plastic; - the animal ear tag (1) comprises a first tag part (2) and a second tag part (3) which are designed to be attached to each other and to an ear (4) of the farm animal; - the first trademark part (2) comprises the plastic into which the antimicrobial additive is incorporated and the second trademark part (3) comprises the plastic into which the antimicrobial additive is incorporated; - the first mark part (2) comprises a mark body (5) and a pin (6) which is arranged at its first end (6a) on the mark body (5) and which comprises a point (7) and / or cutting edge at its second end (6b); - the second mark part (3) comprises a mark body (8) and a receiving element (9) which is arranged on the mark body (8); - the pin (6) of the first tag part (2) is designed to be pushed through an ear (4) of the farm animal and into the receiving element (9) of the second tag part (3); - the identifier body (5) of the first trademark part (2) comprises the plastic into which the antimicrobial additive is incorporated; and - the identifier body (8) of the second trademark part (3) comprises the plastic into which the antimicrobial additive is incorporated; - the antimicrobial additive is evenly distributed throughout the plastic; - the antimicrobial additive includes a silver component. [2] Animal ear tag (1) according to claim 1, characterized by the following characteristics: - the pin (6) of the first brand part (2) comprises the plastic into which the antimicrobial additive is incorporated; and / or - the receiving element (9) of the second brand part (3) comprises the plastic into which the antimicrobial additive is incorporated. [3] Animal ear tag (1) according to one of claims 1 or 2, characterized by the following characteristics: - the first branded part (2) is composed of more than 95% of the plastic into which the antimicrobial additive is incorporated; and / or - the second brand part (3) is composed of more than 95% of the plastic into which the antimicrobial additive is incorporated. [4] Animal ear tag (1) according to any one of the preceding claims, characterized by the following characteristic: - the concentration of the antimicrobial additive is 2% or less than 2% of the total weight of the plastic. [5] Animal ear tag (1) according to any one of the preceding claims, characterized bythe following characteristic: - The concentration of the antimicrobial additive is in the range of 0.2% to 0.6% of the total weight of the plastic. [6] Animal ear tag (1) according to any one of the preceding claims, characterized by the following characteristic: - The antimicrobial additive comprises a silver component in a glass-ceramic carrier. [7] Animal ear tag (1) according to any one of the preceding claims, characterized by the following characteristic: - The antimicrobial additive is based on wet-milled inorganic carrier particles containing a silver component, the inorganic carrier particles having a smooth surface and being produced by wet milling. [8] Animal ear tag (1) according to claim 7, characterized by the following characteristic: - the inorganic carrier particles comprise glass particles with a mean particle size of 0.01 µm to 100 µm and a silver component content of 0.01 to 5 wt.% or up to 10 wt.%. [9] Animal ear tag (1) according to claim 8, characterized by the following characteristic: - the inorganic carrier particles are boron-containing and / or phosphate-containing glass particles that contain a silver salt as the silver component. [10] Animal ear tag (1) according to claim 8 or 9, characterized by the following characteristic: - the inorganic carrier particles are boron-containing and / or phosphate-containing glass particles that contain silver oxide as the silver component. [11] Animal ear tag (1) according to any one of the preceding claims, characterized by the following characteristic: - The antimicrobial additive is a crystalline powder. [12] Animal ear tag (1) according to any one of the preceding claims, characterized by the following characteristic: - 98% of the particles of the antimicrobial additive are smaller than 5 µm and 50% of the particles of the antimicrobial additive are smaller than 2 µm. [13] Animal ear tag (1) according to any one of the preceding claims, characterized by the following characteristic: - The refractive index of the antimicrobial additive is 1.507 with a deviation of ±10%. [14] Animal ear tag (1) according to any one of the preceding claims, characterized by the following characteristic: - the plastic is a thermoplastic polyurethane. [15] Animal ear tag (1) according to claim 14, characterized by the following characteristic: - The biological content in the thermoplastic polyurethane is 32% with a deviation of ±3%. [16] Use of an animal ear tag (1) constructed according to any one of claims 1 to 15 and comprising an antimicrobial additive, wherein the antimicrobial additive contains a silver component, for marking farm animals, in particular cattle, pigs, goats and sheep.

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