Rubber tire mold inner heat vulcanization color mark without displacement

Abstract

The utility model belongs to vulcanization label technical field especially relates to a rubber tire mould in -hot vulcanization color mark of displacement not happening, including the setting of preventing adhesion layer for protecting hot melt adhesive layer in proper order, hot melt adhesive layer is used to absorb the heat of tire mould and produce viscosity, will Hot vulcanization color mark is fixed in mould initial position, prevents the displacement of vulcanization process, base film layer is as the bearing basis of each coating, vulcanization transfer coating, in the tire vulcanization process, will raw rubber pigment layer transfer to tire surface, raw rubber pigment layer is used for forming the figure and text mark on tire surface, pigment protection layer protects raw rubber pigment layer from the influence of outside environment, the utility model is fixed color mark by setting hot melt adhesive layer and the micro -fusion viscosity of absorbing mould heat, firmly avoids the displacement problem in vulcanization process from the root, avoids the tire repair degradation or scrapping caused by position deviation.

Description

Technical Field

[0001] This utility model belongs to the field of vulcanized label technology, and in particular relates to a rubber tire in-mold heat vulcanized color label that will not shift. Background Technology

[0002] Due to equipment and production process limitations, the main process for creating colored graphics on the sidewalls of existing car tires, electric vehicle tires, motorcycle tires, bicycle tires, and other rubber tires is still the use of colored vulcanized labels.

[0003] The basic process is as follows: During the vulcanization of rubber tires, workers place the cut colored vulcanization labels at the designated position of the lower mold of the tire, then put the tire blank into the bladder of the machine base, inflate the bladder to make the tire blank deform, and after the deformation is completed, the upper mold falls quickly to form the mold of the upper mold and the lower mold.

[0004] During the mold-closing process, a large airflow is generated momentarily. At the same time, most tire molds have sidewalls with varying curvatures due to process requirements. Under the combined effect of airflow and curvature, the colored vulcanized labels often shift in position. Once the position shift exceeds the predetermined standard, the colored labels can only be ground down with a grinding wheel or other tools, and then the labels are re-applied to the tire. Preliminary statistics show that the tire label repair rate caused by this situation often exceeds 10% of the total production. During the grinding of damaged labels, dust and rubber particles can cause certain damage to the exposed skin and respiratory tract of operators. In addition, tires with repaired labels generally need to be downgraded due to the damage to their appearance. Some tires cannot be repaired because the labels have shifted to the tread pattern and will directly become scrap tires. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned technical problems by providing an in-mold heat-cured color mark for rubber tires that will not shift.

[0006] In view of this, the present invention provides a rubber tire in-mold heat-cured color mark that will not shift, comprising the following components connected in sequence:

[0007] Anti-stick layer, used to protect the hot melt adhesive layer;

[0008] The hot melt adhesive layer is used to absorb the heat of the tire mold and generate stickiness to fix the hot vulcanization color mark in the initial position of the mold and prevent displacement during the vulcanization process.

[0009] The base film layer serves as the foundation for each coating layer;

[0010] Vulcanization transfer coatings, during the tire vulcanization process, cause the raw rubber pigment layer to separate from the base film layer, transferring the graphics to the tire surface;

[0011] A raw rubber pigment layer is used to form graphic markings on the tire surface;

[0012] Pigment protective layer, protecting the raw gum pigment layer from external environmental influences.

[0013] Preferably, the anti-stick layer is a 0.05mm silicone oil film.

[0014] Preferably, the base film is a high-temperature resistant polyester film with a thickness between 0.01 mm and 0.5 mm.

[0015] Preferably, the vulcanization transfer coating is a paraffin micro-coating, which enables the raw rubber pigment layer to be transferred to the rubber tire and simultaneously absorbed into the raw rubber pigment layer.

[0016] Preferably, the hot melt adhesive layer is a weakly tack modified silicone hot melt adhesive.

[0017] Preferably, the raw rubber pigment layer is made of compounded rubber, which, after vulcanization, forms graphic markings through a cross-linking reaction with the rubber tire.

[0018] Preferably, the pigment protective layer is made of silicone paper with a thickness of 0.05 mm.

[0019] The beneficial effects of this utility model are:

[0020] The anti-stick layer effectively protects the hot melt adhesive layer, ensuring its original tackiness during use. The hot melt adhesive layer, utilizing the slight melting tack generated by absorbing heat from the mold, firmly fixes the color markings, preventing displacement during vulcanization and reducing tire downgrades and scrap due to misalignment. The base film layer, as a stable load-bearing foundation, ensures the integrity of each coating structure and can detach from the mold with the tire, eliminating the need for a dedicated waste removal step and improving production efficiency. The vulcanization transfer coating ensures precise transfer of the raw rubber pigment layer, which forms clear graphic markings on the tire surface. The pigment protective layer ensures the pigment layer is not affected by external factors before transfer, jointly guaranteeing the quality of the markings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the components of this utility model.

[0022] The markings in the diagram are as follows:

[0023] 1. Anti-stick layer; 2. Hot melt adhesive layer; 3. Base film layer; 4. Vulcanization transfer coating; 5. Raw rubber pigment layer; 6. Pigment protective layer. Detailed Implementation

[0024] 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.

[0025] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connection arrangements between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] like Figure 1 As shown, a non-displaceable in-mold heat-curing color mark for rubber tires includes the following components connected in sequence:

[0029] Anti-stick layer 1 is used to protect hot melt adhesive layer 2;

[0030] Hot melt adhesive layer 2 is used to absorb the heat of the tire mold and generate stickiness to fix the hot vulcanization color mark in the initial position of the mold and prevent displacement during the vulcanization process;

[0031] The base film layer 3 serves as the foundation for each coating layer;

[0032] Vulcanization transfer coating 4, during the tire vulcanization process, causes the raw rubber pigment layer to separate from the base film layer, transferring the graphics to the tire surface;

[0033] Raw rubber pigment layer 5, used to form graphic markings on the tire surface;

[0034] Pigment protective layer 6 protects the raw gum pigment layer 5 from external environmental influences.

[0035] The anti-stick layer 1 effectively protects the hot melt adhesive layer 2, ensuring its original tackiness during use. The hot melt adhesive layer 2, by absorbing the heat from the mold, firmly fixes the color mark, fundamentally preventing displacement problems during the vulcanization process and reducing tire repair downgrades caused by positional deviations. The base film layer 3 serves as a stable load-bearing foundation, ensuring the integrity of each coating structure and allowing it to detach from the mold with the tire, eliminating the need for a dedicated waste removal step and improving production efficiency. The vulcanization transfer coating layer 4 ensures the precise transfer of the raw rubber pigment layer 5, which forms clear colored graphic markings on the tire surface. The pigment protective layer 6 ensures that the pigment layer is not affected by external factors before transfer, jointly guaranteeing the quality of the markings.

[0036] In actual use, after peeling off the anti-stick layer 1, the hot melt adhesive layer 2 can maintain its initial stickiness. Then, the color mark is placed in the designated position of the tire mold. The hot melt adhesive layer 2 quickly absorbs the continuous heat of the mold and generates micro-melt adhesiveness, which firmly fixes the color mark in the initial position. This completely eliminates the displacement problem that may occur during the vulcanization process, and fundamentally reduces the tire repair downgrade and scrapping caused by position displacement.

[0037] The base film layer 3 supports the orderly arrangement of each coating layer, ensuring the stability of the overall structure. After the tire vulcanization is completed, the waste film is removed from the mold along with the tire by taking advantage of the thermal adsorption of the tire rubber, eliminating the need for a special mold cleaning step, making the production process smoother and greatly improving production efficiency.

[0038] The vulcanization transfer coating 4 ensures that the raw rubber pigment layer 5 can be completely and clearly transferred to the tire surface;

[0039] The raw rubber pigment layer 5 then forms the desired graphic markings on the tire surface;

[0040] The pigment protective layer 6 protects the raw rubber pigment layer 5 from external pollution, wear and other effects.

[0041] These three layers work together to ensure that the markings on the tire surface are clear, complete, and of high quality.

[0042] As a preferred example of this application, the anti-stick layer 1 is made of a 0.05mm silicone oil film. This size of silicone oil film design can reliably protect the hot melt adhesive layer 2 without increasing costs or affecting the peeling operation during use due to excessive thickness, and is suitable for the overall structure and usage requirements of the color label.

[0043] As a preferred example of this application, the base film is a polyester high-temperature resistant film with a thickness between 0.01mm and 0.5mm. This material has good high-temperature resistance and can adapt to the high-temperature environment of tire mold vulcanization. At the same time, the appropriate thickness gives it sufficient support strength without being too heavy to affect the adhesion and transfer of the color label, thus ensuring the structural stability and reliability of the color label.

[0044] As a preferred example of this application, the vulcanization transfer coating 4 is a paraffin micro-coating, which enables the raw rubber pigment layer 5 to be transferred to the rubber tire and absorbed into the raw rubber pigment layer 5. The paraffin micro-coating not only efficiently promotes the transfer of the raw rubber pigment layer 5 to the tire, but is also absorbed by the raw rubber pigment layer 5, which enhances the vulcanization of the rubber compound and further strengthens the transfer effect, ensuring that the marking is clearly and firmly attached to the tire surface, thereby improving the functionality and durability of the color mark.

[0045] As a preferred example of this application, the hot melt adhesive layer 2 is made of weakly viscous modified silicone hot melt adhesive. The weak viscous properties prevent it from sticking excessively at room temperature, making it convenient for workers to accurately place it in the designated position on the mold. The modified silicone material has good heat resistance and can stably produce micro-melt viscous properties in the continuous constant heat environment of the tire mold. This ensures that the color label is firmly and stably bonded during the vulcanization process, and prevents it from sticking to the mold and causing pollution due to excessive viscous properties. This further improves the reliability of the color label fixing and the convenience of use.

[0046] As a preferred example of this application, the raw rubber pigment layer 5 is made of compounded rubber. After vulcanization, it forms colored graphic markings with the vehicle rubber tire through a cross-linking reaction. The compounded rubber has good compatibility with the tire rubber. Through the cross-linking reaction, the graphic markings can form a strong chemical bond with the tire, which greatly enhances the adhesion and durability of the markings and avoids problems such as peeling and wear during use, ensuring the long-term clarity of the markings.

[0047] As a preferred example of this application, the pigment protective layer 6 is made of silicone paper with a thickness of 0.05 mm. This setting can effectively protect the raw rubber pigment layer 5 and prevent it from sticking to other objects or being contaminated before storage, transportation and vulcanization. At the same time, the appropriate thickness range ensures the protective effect without increasing the overall thickness of the color label, and does not affect the subsequent vulcanization transfer process, thus adapting to the overall structural design of the color label.

[0048] 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 rubber tire in-mold heat-cured color mark that will not shift, characterized in that: Including sequentially connected settings: An anti-stick layer (1) is used to protect the hot melt adhesive layer (2); The hot melt adhesive layer (2) is used to absorb the heat of the tire mold to generate stickiness, and to fix the hot vulcanized color mark in the initial position of the mold to prevent displacement during the vulcanization process; The base film layer (3) serves as the foundation for each coating layer; The vulcanization transfer coating (4) causes the raw rubber pigment layer (5) to separate from the base film layer (3) during the tire vulcanization process, so that the graphics are transferred to the tire surface. A raw rubber pigment layer (5) is used to form graphic markings on the tire surface; Pigment protective layer (6) protects the raw gum pigment layer (5) from external environmental influences.

2. The in-mold heat-cured color mark for rubber tires that will not shift according to claim 1, characterized in that: The anti-stick layer (1) is made of silicone paper or silicone film with a thickness between 0.005 mm and 0.5 mm.

3. The in-mold heat-cured color mark for rubber tires that will not shift according to claim 2, characterized in that: The anti-stick layer (1) is a 0.05mm silicone oil film.

4. The in-mold heat-cured color mark for rubber tires that will not shift according to claim 1, characterized in that: The base film layer is a high-temperature resistant polyester film with a thickness between 0.01mm and 0.5mm.

5. The in-mold heat-cured color mark for rubber tires that will not shift according to claim 1, characterized in that: The vulcanization transfer coating (4) is a paraffin micro-coating, which enables the raw rubber pigment layer (5) to be transferred onto the rubber tire, while being absorbed into the raw rubber pigment layer (5).

6. The in-mold heat-cured color mark for rubber tires that will not shift according to claim 1, characterized in that: The hot melt adhesive layer (2) is made of weakly viscous modified silicone hot melt adhesive.

7. The in-mold heat-cured color mark for rubber tires that will not shift according to claim 1, characterized in that: The raw rubber pigment layer (5) is made of compounded rubber. After vulcanization, it forms graphic markings with the rubber tire through a cross-linking reaction.

8. The in-mold heat-cured color mark for rubber tires that will not shift according to claim 1, characterized in that: The pigment protective layer (6) is made of silicone paper or silicone film with a thickness of 0.005mm-0.5mm.

9. The in-mold heat-cured color mark for rubber tires that will not shift according to claim 8, characterized in that: The pigment protective layer (6) is made of silicone paper with a thickness of 0.05 mm.

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