On-line uniform dotting ribbon for tires without warming

Abstract

The utility model belongs to the dot color band technical field, especially relates to a kind of on-line uniform motion dot color band for tire without needing to be heated, including the anti-adhesion layer, bearing film, rubber pigment separation layer, flexible rubber resin protective layer, pigment layer and adhesive layer that are sequentially laminated;The anti-adhesion layer is attached to the first surface of the bearing film, and is used for the interlayer anti-adhesion of color band in the state of winding;The rubber pigment separation layer is attached to the second surface of the bearing film away from the anti-adhesion layer, and is used for assisting pigment layer demolding in tire side position;The flexible rubber resin protective layer is attached to the surface of the rubber pigment separation layer away from the bearing film.The application avoids the problem of 40 DEG C temperature difference caused by workshop non-constant temperature and humidity, marking head temperature loss, eliminates the damage and loss of uniform motion point caused by temperature difference, avoids the stop production and shutdown accident of rim automatic assembly line;Meanwhile, the 24 hours heating link of marking head is saved, and the energy consumption waste of multiple equipment of large tire enterprise is greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the field of dot-matrix tape technology, and in particular relates to an online uniform dot-matrix tape for tires that does not require heating. Background Technology

[0002] In tire manufacturing and subsequent rim assembly processes, the uniform colored dots on the tire sidewall are key reference markers for rim installation. Especially with the widespread use of automated rim assembly lines, the quality (completeness and clarity) of the uniform dots directly determines whether the assembly line can operate normally. Once the uniform dots are damaged, missing, or blurred, it will directly lead to the shutdown of the automated rim recognition assembly line, causing serious efficiency losses and economic costs to the manufacturing company.

[0003] Currently, tire manufacturers typically use a linkage device to mark dots on the tire sidewall after the uniformity testing process is completed to form the aforementioned uniformity dots. Existing online dotting processes all use heat transfer technology: its working principle is that the marking head, which is continuously heated, applies pressure to the ribbon, causing the solid hot melt adhesive contained in the ribbon to melt, thereby transferring and fixing the marking components of the ribbon to the target position on the tire sidewall, ultimately forming uniform colored dots.

[0004] However, the above-mentioned online dotting process for heat transfer printing has many technical defects that are difficult to solve in practical applications, as follows: Poor adaptability to non-planar and random locations: Tire sidewalls are not flat surfaces, but rather feature various non-planar structures such as tread patterns, raised lettering, and velvet textures. Furthermore, the placement of the uniform dots needs to be calculated based on real-time measurements from the uniformization equipment, resulting in unique (random) uniform dot positions for each tire. This characteristic places extremely high demands on the adaptability of heat transfer ribbons—the ribbons must be able to create consistent uniform dots in any location, including flat surfaces, tread patterns, raised lettering, and velvet textures. However, existing heat transfer ribbons are limited by the fluidity and adhesion characteristics of the melted hot melt adhesive, making it difficult to achieve uniform transfer in non-planar locations, easily leading to issues such as incomplete edges of the uniform dots and blank areas in the middle.

[0005] Temperature fluctuations lead to high defect rates in marking: The core of the heat transfer printing process relies on the stable heating temperature of the marking head, but in actual production scenarios, the marking head temperature is prone to fluctuations. On the one hand, the marking head needs to continuously perform piston-like marking actions and is exposed to the air for extended periods, inevitably resulting in continuous temperature loss. On the other hand, the uniform marking equipment is usually placed in production workshops that are not temperature and humidity controlled. Changes in the workshop environment's temperature, humidity, and airflow further exacerbate the temperature fluctuations of the marking head. According to actual production data, during seasonal transitions, the measured temperature difference of the marking head under the same parameter settings can reach approximately 40°C. This temperature difference directly leads to uneven melting of the hot melt adhesive in the ribbon, resulting in defects such as over-adhesion (residual adhesive residue), under-adhesion (easy to fall off), and inconsistent color depth in the transferred uniform marking dots, severely affecting the effectiveness of the uniform marking dot recognition.

[0006] Significant energy waste: To maintain the stable temperature required for the heat transfer process, the marking head needs to be heated continuously for 24 hours and cannot be shut down. Large tire companies typically have multiple uniform marking machines. The continuous heating and operation of multiple machines for 24 hours will generate extremely high energy consumption, resulting in significant energy waste in the long run, which does not meet the current energy-saving requirements of industrial production.

[0007] In summary, existing online uniform dotting technology for tires based on heat transfer printing has shortcomings such as poor adaptability, temperature sensitivity, and high energy consumption. It is difficult to meet the stringent requirements of automatic wheel rim assembly lines for uniform dotting quality and the needs of enterprises for energy-saving production. There is an urgent need for an online uniform dotting technology solution that can avoid heating dependence and solve the above-mentioned defects. Utility Model Content

[0008] The purpose of this invention is to address the aforementioned technical problems by providing an online uniform dot color strip for tires that does not require heating.

[0009] In view of this, the present invention provides an online uniform dotting tape for tires that does not require heating, comprising an anti-stick layer, a carrier film, a rubber pigment release layer, a flexible rubber resin protective layer, a pigment layer and an adhesive layer stacked in sequence. The anti-stick layer is adhered to the first surface of the carrier film and is used to prevent the ribbon from sticking between layers in the roll state. The rubber pigment release layer is attached to the second surface of the carrier film away from the anti-stick layer, and is used to assist the release of the pigment layer at the tire sidewall position; The flexible rubber resin protective layer is attached to the surface of the rubber pigment release layer away from the carrier film, and is used to adapt to the non-planar structure of the tire sidewall and protect the pigment layer. The pigment layer is attached to the surface of the flexible rubber resin protective layer away from the rubber pigment release layer, and is used to form the colored dots required for tire uniformity identification; The adhesive layer is attached to the surface of the pigment layer away from the flexible rubber resin protective layer, and is used to bond and fix the color strip to the tire sidewall.

[0010] Furthermore, the anti-stick layer is formed on the first surface of the carrier film by coating with silicon or fluorine.

[0011] Furthermore, the carrier film is a high-temperature resistant plastic film with a thickness of 0.012-0.3 mm.

[0012] Furthermore, the rubber pigment release layer is made of fixed paraffin.

[0013] Furthermore, the material of the flexible rubber resin protective layer is flexible rubber resin.

[0014] Furthermore, the pigment layer uses ozone-resistant rubber pigment.

[0015] Furthermore, the adhesive layer is made of a rubber-based adhesive.

[0016] The beneficial effects of this utility model are: This application avoids the problem of a 40°C temperature difference caused by non-constant temperature and humidity in the workshop and the heat loss of the marking head, eliminates the damage and loss of uniform points caused by temperature difference, and avoids production stoppage and work stoppage accidents on the automatic wheel rim assembly line; at the same time, it eliminates the 24-hour heating process of the marking head, which greatly reduces the energy waste of multiple equipment in large tire companies. In addition, the roll form of this application can be smoothly unfolded layer by layer by the equipment without the need for manual removal of the release paper, which meets the requirements for random position marking on the tire sidewall and improves the efficiency of automated operation. The flexible rubber resin protective layer and the rubber pigment release layer work together to ensure that complete uniform moving points can be formed at any position such as the tire sidewall plane, tread pattern, embossed lettering, and velvet, meeting the strict requirements of the automatic wheel rim assembly line for the quality of uniform moving points. The pigment layer has clear color markings, and the adhesive layer has stable adhesion at room temperature, ensuring that the uniformity points are attached for a long time without falling off, providing a reliable reference for the uniformity testing process and wheel rim assembly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an online uniform dotted color strip for tires that does not require heating, as proposed in this utility model. The markings in the diagram are as follows: 1. Anti-stick layer; 2. Supporting film; 3. Rubber pigment release layer; 4. Flexible rubber resin protective layer; 5. Pigment layer; 6. Adhesive layer. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0019] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0020] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0022] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0023] Reference Figure 1 A tire online uniform dotting tape that does not require heating includes an anti-sticking layer 1, a carrier film 2, a rubber pigment release layer 3, a flexible rubber resin protective layer 4, a pigment layer 5, and an adhesive layer 6 stacked in sequence. The anti-stick layer 1 is attached to the first surface of the carrier film 2 and is used to prevent the ribbon from sticking between layers in the roll state. The rubber pigment release layer 3 is attached to the second surface of the carrier film 2 away from the anti-stick layer 1, and is used to assist the release of the pigment layer 5 at the tire sidewall position. The flexible rubber resin protective layer 4 is attached to the surface of the rubber pigment release layer 3 away from the carrier film 2, and is used to adapt to the non-planar structure of the tire sidewall and protect the pigment layer 5. The pigment layer 5 is attached to the surface of the flexible rubber resin protective layer 4 away from the rubber pigment release layer 3, and is used to form the colored dots required for tire uniformity identification. The adhesive layer 6 is attached to the surface of the pigment layer 5 away from the flexible rubber resin protective layer 4, and is used to bond and fix the color strip to the tire sidewall.

[0024] This application abandons the traditional heat transfer printing logic of "heating and melting hot melt adhesive" and achieves bonding directly through the room temperature adhesion of the adhesive layer 6. It does not rely on the heating of the marking head, avoids the problem of 40°C temperature difference caused by non-constant temperature and humidity in the workshop and the heat loss of the marking head, eliminates the damage and loss of uniform points caused by temperature difference, and avoids production stoppage and work stoppage accidents on the automatic wheel rim assembly line; at the same time, it eliminates the 24-hour heating of the marking head, which greatly reduces the energy waste of multiple equipment in large tire companies. The anti-stick layer 1 is attached to the surface of the carrier film 2. Its anti-stick properties prevent interlayer adhesion during roll-up. It is compatible with the roll-up transmission of online equipment. That is, the roll-up form of this application can be smoothly unfolded layer by layer by the equipment without manual removal of the anti-stick paper, which meets the requirements of random position marking on the tire sidewall and improves the efficiency of automated operation. The rubber pigment release layer 3 can quickly cut the adhesion between the carrier film 2 and the pigment layer 5 during dotting, ensuring that the pigment layer 5 is transferred to the tire sidewall along with other functional layers; The flexible rubber resin protective layer 4 and the rubber pigment release layer 3 work together to ensure that complete uniform moving points can be formed at any position such as the tire sidewall plane, tread pattern, embossed lettering, and velvet, meeting the strict requirements of the automatic wheel rim assembly line for the quality of uniform moving points. The pigment layer 5 provides the color markings required for uniformity identification, while the adhesive layer 6 stably fixes the functional layers (pigment layer 5 and protective layer) to the tire sidewall at room temperature, ensuring that the markings do not fall off and that the uniformity points are attached for a long time without falling off, providing a reliable reference for the uniformity detection process and rim assembly.

[0025] In the example of this application, the anti-stick layer 1 is formed on the first surface of the carrier film 2 by coating with silicon or fluorine.

[0026] As a preferred example of this utility model, silicon or fluorine materials have extremely low surface energy. After being coated onto the first surface of the carrier film 2, they can form a "low-adhesion interface" between the carrier film 2 and the adjacent layer (the adhesive layer 6 side during roll-up). This prevents the material from detaching from the carrier film 2 and avoids interlayer adhesion during roll-up, ensuring controllable interlayer separation force. This effectively prevents interlayer adhesion, jamming, or tearing of the roll-up ribbon during equipment transmission, ensuring that the ribbon can be smoothly unrolled layer by layer, adapting to the continuous operation requirements of online automated dotting. There is no need to set up an additional independent anti-sticking paper protective layer. Through the integrated design of "carrier film 2 and coated anti-sticking layer 1", the types of materials and production processes are reduced, the overall cost of the ribbon is reduced, and the manual peeling of the anti-sticking paper is eliminated.

[0027] In the example of this application, the carrier film 2 is a high-temperature resistant plastic film with a thickness of 0.012-0.3 mm, specifically 0.012 mm, 0.2 mm or 0.3 mm.

[0028] As a preferred example of this utility model, although this application does not require heated dotting, the online dotting equipment may experience slight local temperature rise due to mechanical friction during operation. The high-temperature resistant plastic film can resist this temperature rise, preventing the film from deforming or breaking due to heat, and preventing the dotting position from shifting or the functional layer from falling off due to deformation of the supporting film 2, thus ensuring the integrity of the overall structure. In addition, the thickness range of 0.012-0.3mm takes into account both flexibility and strength. The thinner thickness ensures that the film can deform slightly with the non-planar structure of the tire sidewall, avoiding dotting misalignment due to excessive film thickness. Sufficient thickness gives the film tensile and tear resistance, and can withstand the roll transmission tension of the online equipment.

[0029] In the example of this application, the rubber pigment release layer 3 is made of fixed paraffin.

[0030] As a preferred example of this utility model, the fixed paraffin wax has stable and controllable peel strength. It has strong adhesion to the carrier film 2 (ensuring it does not fall off during roll packaging), but weak adhesion to the flexible rubber resin protective layer 4. Under the instantaneous pressure of the dotting device, it can quickly break the connection with the protective layer, forming a separation effect where the carrier film 2 remains and the functional layer is transferred to the tire sidewall. Moreover, the peel strength is not affected by fluctuations in workshop temperature and humidity. Therefore, at non-planar random locations such as tire sidewall treads and embossed lettering, it can ensure that the pigment layer 5 completely detaches from the carrier film 2 along with the functional layer, without pigment residue, missing corners, or other problems. This solves the problem of poor uniformity of movement points caused by incomplete demolding in traditional non-detachment layer structures. Furthermore, the stable physical properties of the fixed paraffin wax prevent peel strength fluctuations caused by changes in temperature and humidity, ensuring consistent demolding effects for different tires and different dotting positions, further reducing the dotting defect rate.

[0031] In the example of this application, the flexible rubber resin protective layer 4 is made of flexible rubber resin.

[0032] As a preferred example of this utility model, the flexible rubber resin has high elasticity and deformation capability. Under the action of dotting pressure, it can conform and deform with the non-planar structure (pattern gap, raised and recessed lettering) of the tire sidewall, wrapping the pigment layer 5 and embedding it into the non-planar gap. This avoids the pigment layer 5 being squeezed and damaged due to the inability of the rigid protective layer to deform, ensuring the integrity of the uniform moving points in the non-planar position. At the same time, it has certain anti-friction and anti-impact properties, which can buffer the instantaneous pressure during the dotting process and resist the slight friction during tire handling and storage, preventing the pigment layer 5 from wearing off and falling off, and ensuring the long-term clarity of the uniform moving points.

[0033] In the example of this application, the pigment layer 5 is made of ozone-resistant rubber pigment.

[0034] As a preferred example of this utility model, the ozone-type rubber pigment contains an anti-ozone agent, which can inhibit the oxidative decomposition of pigment molecules by ozone in the air during tire storage and use, prevent pigment fading and powdering, and meet the long-term identification requirements of the uniformity detection process and the rim assembly line. In addition, the rubber pigment has good chemical compatibility with the rubber material of the tire sidewall, and can form a stable bond with the adhesive layer 6 and the flexible rubber resin protective layer 4, avoiding delamination caused by material repulsion and further reducing the risk of uniformity point detachment.

[0035] In the example of this application, the adhesive layer 6 is made of a rubber-based adhesive.

[0036] As a preferred example of this utility model, the rubber-based adhesive can form adhesiveness without heating. Its molecular structure can form physical adsorption and chemical combination with the molecules of the tire sidewall rubber, achieving stable bonding at room temperature. This replaces the traditional heat transfer printing logic of "heating and melting hot melt adhesive". By bonding at room temperature, the uniform point is directly fixed, completely avoiding the energy consumption and temperature difference problems related to heating. Its adhesion strength to the tire sidewall is greater than that of the rubber pigment release layer 3 and the flexible rubber resin protective layer 4. It can form a high-strength bond with the tire sidewall at room temperature, preventing the moving points from falling off during tire handling and use. At the same time, it is compatible with the tire sidewall rubber material and has no risk of adhesion failure.

[0037] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A tire-mounted, online uniform dot-matrix color strip that does not require heating, characterized in that: It includes an anti-stick layer (1), a carrier film (2), a rubber pigment release layer (3), a flexible rubber resin protective layer (4), a pigment layer (5), and an adhesive layer (6) stacked in sequence. The anti-stick layer (1) is attached to the first surface of the carrier film (2) and is used for interlayer anti-sticking of the ribbon in the roll state; The rubber pigment release layer (3) is attached to the second surface of the carrier film (2) away from the anti-stick layer (1) to assist the release of the pigment layer (5) at the tire sidewall position; The flexible rubber resin protective layer (4) is attached to the surface of the rubber pigment release layer (3) away from the carrier film (2) to adapt to the non-planar structure of the tire sidewall and protect the pigment layer (5). The pigment layer (5) is attached to the surface of the flexible rubber resin protective layer (4) away from the rubber pigment release layer (3) to form the colored dots required for tire uniformity identification; The adhesive layer (6) is attached to the surface of the pigment layer (5) away from the flexible rubber resin protective layer (4) for bonding and fixing the color strip to the tire sidewall.

2. The online uniform dotted ribbon for tires that does not require heating, as described in claim 1, is characterized in that... The anti-stick layer (1) is formed on the first surface of the carrier film (2) by coating with silicon or fluorine.

3. The online uniform dotted ribbon for tires that does not require heating according to claim 1, characterized in that, The carrier film (2) is a high-temperature resistant plastic film with a thickness of 0.012-0.3 mm.

4. The online uniform dotted ribbon for tires that does not require heating according to claim 1, characterized in that, The rubber pigment release layer (3) is made of fixed paraffin.

5. The online uniform dotted ribbon for tires that does not require heating according to claim 1, characterized in that, The flexible rubber resin protective layer (4) is made of flexible rubber resin.

6. The online uniform dotted ribbon for tires that does not require heating according to claim 1, characterized in that, The pigment layer (5) is made of ozone-resistant rubber pigment.

7. The online uniform dotted ribbon for tires that does not require heating according to claim 1, characterized in that, The adhesive layer (6) is made of rubber-based adhesive.

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