High-temperature-resistant anti-corrosion heat transfer film

Abstract

The utility model discloses a high temperature resistant anticorrosive thermal transfer film relates to thermal transfer film field, including release paper layer, hot melt adhesive layer, pattern layer, protective layer and protective layer, the hot melt adhesive layer is provided on the release paper layer, the pattern layer is provided on the hot melt adhesive layer, the protective layer is provided on the pattern layer, the protective layer is provided on the protective layer, the protective layer is provided on the protective layer, and the protective layer is provided on the protective layer. When the heat transfer printing film is used for pattern transfer printing, the release paper layer and the hot melt adhesive layer are separated firstly, the protective layer is heated and pressurized through pressurizing and heating equipment, in the process, the hot melt adhesive layer can be melted and permeate to the surface of a printing stock to be bonded with a target material, meanwhile, the hot melt adhesive layer can permeate to the surface of the printing stock to be bonded with the target material, and the protective layer is arranged on the protective layer. And the printing ink of the pattern layer is melted and permeates into the target material. Under the combined action of pressure and temperature, the pattern layer is firmly adhered to a target material, so that pattern transfer is achieved, then the protective layer is separated from the protective layer, and the protective layer is located on the surface of the pattern, so that the effects of high temperature resistance and corrosion resistance are achieved.

Description

Technical Field

[0001] This utility model relates to the field of heat transfer film, and in particular to a high-temperature resistant and corrosion-resistant heat transfer film. Background Technology

[0002] As a medium in the heat transfer process, heat transfer film, with its unique heat-sensitive adhesive layer, can chemically bond with the surface of the target material under the combined action of temperature and pressure, thereby achieving the effect of pattern transfer. It has wide applications in many fields such as home decoration and clothing manufacturing. The transferred decorative surface is not only wear-resistant, heat-resistant, and light-resistant, but also maintains its aesthetic appeal for a long time. It is a highly efficient, environmentally friendly, and personalized decorative technique.

[0003] Patent CN221986120U, published on November 12, 2024, discloses an anti-counterfeiting heat transfer film, comprising a base layer; a protective layer disposed on the outside of the base layer to protect the anti-counterfeiting heat transfer film; and an anti-counterfeiting layer disposed inside the base layer to prevent the anti-counterfeiting film from detaching. The anti-counterfeiting layer contains a printing layer. This utility model, through the arrangement of the anti-counterfeiting layer, anti-deformation layer, first reinforcing wire, and second reinforcing wire, improves the anti-counterfeiting effect during use. The anti-counterfeiting film layer is wrapped between the first and second hot melt adhesives. When the first and second hot melt adhesives are connected by a high-temperature silicon roller, temperature and pressure are applied to the anti-counterfeiting film layer, preventing it from detaching during prolonged use, thus improving the anti-counterfeiting performance of the heat transfer film. The anti-deformation layer prevents stretching and deformation during daily use.

[0004] In certain environments, such as automobile manufacturing, components or products need to operate or withstand high temperatures. Traditional heat transfer films may not be able to withstand such high temperatures, leading to fading, deformation, or peeling of the pattern. In chemical plants or marine environments, components or products need to withstand the erosion of corrosive substances. If the heat transfer film does not have anti-corrosion properties, the pattern and substrate may be damaged. The above-mentioned solutions improve the anti-counterfeiting effect during use by setting an anti-counterfeiting layer, but their application environments are limited and their versatility is generally limited.

[0005] Therefore, it is necessary to provide a high-temperature resistant and corrosion-resistant heat transfer film. Utility Model Content

[0006] This application provides a high-temperature resistant and corrosion-resistant heat transfer film, which can improve the problem in related technologies that, under certain specific environments, traditional heat transfer films cannot withstand high temperatures or lack corrosion resistance, resulting in damage to the pattern and substrate, thus affecting the final pattern transfer effect.

[0007] This application provides a high-temperature resistant and corrosion-resistant heat transfer film, including a release paper layer, a hot melt adhesive layer, a pattern layer, a protective layer, and a protective layer. The hot melt adhesive layer is disposed on the release paper layer, the pattern layer is disposed on the hot melt adhesive layer, the protective layer is disposed on the pattern layer, and the protective layer is disposed on the protective layer.

[0008] This application provides a high-temperature resistant and corrosion-resistant heat transfer film. When using this heat transfer film for pattern transfer, the release paper layer is first separated from the hot melt adhesive layer. The hot melt adhesive layer is aligned with the area where the pattern transfer is to be performed. A pressure heating device is used to heat and pressurize the protective layer. During this process, the hot melt adhesive layer melts and penetrates into the surface of the substrate, forming an adhesion with the target material. Simultaneously, the ink in the pattern layer melts and penetrates into the target material. Under the combined action of pressure and temperature, the pattern layer is firmly adhered to the target material, thereby achieving pattern transfer. Then, the protective layer separates from the protective layer. The protective layer, located on the surface of the pattern, provides high-temperature resistance and corrosion protection.

[0009] The above-mentioned technical solutions in the embodiments of this application have at least the following technical effects: the protective layer gives the transferred pattern the ability to resist high temperature and corrosion; the release paper layer, as a separating film, ensures that the adhesive substances do not adhere to each other during processing, storage and transportation, and maintain their original performance and shape; the hot melt adhesive layer melts and penetrates into the surface of the substrate under heating and pressure, firmly adhering the pattern layer to the target material.

[0010] In some embodiments, the protective layer includes a thermal insulation layer, a corrosion-resistant layer, and a water-absorbing layer, wherein the thermal insulation layer is disposed on the pattern layer, the corrosion-resistant layer is disposed on the thermal insulation layer, and the water-absorbing layer is disposed on the corrosion-resistant layer.

[0011] In some embodiments, the absorbent layer has blind holes, and absorbent particles are disposed inside the blind holes.

[0012] In some embodiments, a tear-off sheet is further provided on the hot melt adhesive layer, and a tear is provided at the connection between the tear-off sheet and the hot melt adhesive layer.

[0013] In some embodiments, the tear opening has a plurality of V-shaped through holes, the sharp corners of which are perpendicular to the line connecting the tear paper and the hot melt adhesive layer.

[0014] In some embodiments, the pattern layer is further provided with anti-counterfeiting marks.

[0015] In some embodiments, the anti-counterfeiting label is printed using one of color-changing ink, magnetic ink, and fluorescent dye. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall cross-sectional structure of a high-temperature resistant and corrosion-resistant heat transfer film provided in an embodiment of this application;

[0018] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0019] Figure 3 A schematic diagram of the overall structure of a high-temperature resistant and corrosion-resistant heat transfer film provided in this application embodiment;

[0020] Figure 4 for Figure 3 Enlarged view of section B.

[0021] The following are the labeling elements in the figure:

[0022] 1. Release paper layer; 2. Hot melt adhesive layer; 3. Pattern layer; 4. Protective layer; 41. Thermal insulation layer; 42. Corrosion resistant layer; 43. Water-absorbing layer; 5. Protective layer; 6. Water-absorbing particles; 7. Tear-off paper; 8. Tear edge; 9. Anti-counterfeiting label. Detailed Implementation

[0023] Based on this, in order to improve the problem that in some specific environments, traditional heat transfer films cannot withstand high temperatures or lack anti-corrosion properties, which may cause damage to the pattern and substrate and affect the final pattern transfer effect, the embodiments of this application provide the following solutions.

[0024] Please refer to the following: Figures 1-4 It includes a release paper layer 1, a hot melt adhesive layer 2, a pattern layer 3, a protective layer 4, and a protective layer 5. The hot melt adhesive layer 2 is bonded to the release paper layer 1, the pattern layer 3 is bonded to the hot melt adhesive layer 2, the protective layer 4 is bonded to the pattern layer 3, and the protective layer 5 is bonded to the protective layer 4.

[0025] With this setup, when using this heat transfer film for pattern transfer, the first step is to separate the release paper layer 1 from the hot melt adhesive layer 2 on the heat transfer film. Then, the hot melt adhesive layer 2 is aligned and adhered to the specific area where the pattern transfer is needed. Next, using specialized pressure and heating equipment, temperature and pressure are applied to the protective layer 5 on the heat transfer film. During this heating and pressurization process, the hot melt adhesive layer 2 melts evenly and, due to its excellent fluidity, penetrates deeply into the tiny pores of the substrate surface, thus establishing a strong and lasting bond between the hot melt adhesive and the target material. Simultaneously, under the combined effect of pressure and temperature, the pattern layer 3 is firmly and evenly adhered to the target material, achieving a perfect transfer of the pattern from the heat transfer film to the target material. After this process is completed, the final step is to separate the protective layer 5 from the protective layer 4 on the surface of the pattern layer 3. This protective layer 4 is located on the surface of the pattern and plays a crucial role in high temperature resistance and corrosion prevention, effectively protecting the pattern from damage by the external environment after transfer and ensuring the durability and aesthetics of the pattern.

[0026] Optionally, in some embodiments, please also refer to Figure 2 The protective layer 4 includes a heat insulation layer 41, a corrosion-resistant layer 42, and a water-absorbing layer 43. The heat insulation layer 41 is bonded to the pattern layer 3, the corrosion-resistant layer 42 is bonded to the heat insulation layer 41, and the water-absorbing layer 43 is bonded to the corrosion-resistant layer 42. The water-absorbing layer 43 has blind holes filled with water-absorbing particles 6. The materials used for the water-absorbing particles 6 include, but are not limited to, super absorbent resin, calcium chloride, and silica gel.

[0027] With this setup, after the pattern on the heat transfer film is transferred, the protective layer 4 exists on the pattern surface to provide protection. The outermost layer of the protective layer 5 is the absorbent layer 43, designed to effectively resist possible moisture intrusion. The absorbent layer 43 is carefully filled with various absorbent particles 6. These particles are diverse, using superabsorbent resin as an example. Superabsorbent resin is mainly composed of sodium acrylate, butyl acrylate, crosslinking agents, etc., and can absorb hundreds or even thousands of times its own weight in pure water. After absorbing water, it becomes a gel, and it is difficult to squeeze out the water even under pressure, exhibiting outstanding water absorption and retention capabilities. These absorbent particles 6 are mainly concentrated in areas of the same color as the pattern or in relatively concealed locations. This ensures that the overall visual effect of the pattern is not disturbed, and that when encountering moisture, the absorbent particles 6 can respond quickly and firmly absorb the moisture, thus providing excellent water absorption and retention. The protective layer 5 effectively prevents moisture from penetrating and eroding the pattern, avoiding color changes or fading caused by moisture. The middle layer of the protective layer 5 is an anti-corrosion layer, which can block some corrosive substances, such as oxygen, moisture, chemical solvents, acids and alkalis, salt spray and other corrosive gases, thus ensuring the durability of the pattern. The innermost layer of the protective layer 5 is a heat insulation layer 41, which has excellent heat insulation performance and can greatly reduce the impact of changes in external ambient temperature on the pattern. The heat insulation layer 41 can effectively regulate and stabilize the microenvironment in which the pattern is located, ensuring that the pattern can maintain its original color and texture throughout the seasons.

[0028] Optionally, in some embodiments, please refer to 3 as well, a tear-off paper 7 is also adhered to the hot melt adhesive layer 2, and a tear 8 is adhered at the connection between the tear-off paper 7 and the hot melt adhesive layer 2. The tear 8 has a plurality of V-shaped through holes, and the pointed corners of the V-shaped through holes are perpendicular to the line connecting the tear-off paper 7 and the hot melt adhesive layer 2.

[0029] With this setup, before the heat transfer film can transfer patterns, the release paper layer 1 needs to be separated from the hot melt adhesive layer 2. The user simply holds the tear paper 7 and gently tears it in the predetermined direction, and the release paper layer 1 and the hot melt adhesive layer 2 can be separated quickly and cleanly. This optimizes the mechanical structure of the tear paper 7 and greatly improves the flexibility of tearing. Due to the design of multiple V-shaped through holes at the tear 8, when using the tear paper 7, the main direction of force is upward, and any angle is acceptable without breaking the connection between the tear paper 7 and the tear 8. After the pattern transfer operation is completed, the direction of force applied to the tear paper 7 can be changed to any direction, and the connection between the tear paper 7 and the tear 8 can be easily broken. This process also benefits from the ingenious design of the V-shaped through holes, which ensure the smoothness and convenience of the tear paper 7 during separation, bringing users an excellent user experience.

[0030] Optionally, in some embodiments, please also refer to Figure 3The pattern layer 3 is also marked with an anti-counterfeiting mark 9, which is printed using one of color-changing ink, magnetic ink and fluorescent dye.

[0031] This design endows the pattern layer 3 with anti-counterfeiting capabilities through the anti-counterfeiting label 9. The color-changing ink's ability to change color is difficult to replicate, giving it a significant advantage in anti-counterfeiting. The ink's color changes under specific stimuli (such as temperature, light, or pressure), providing a direct and reliable means of authentication and greatly increasing the difficulty of counterfeiting. Magnetic ink utilizes the magnetization properties of magnetic materials under a magnetic field to record information, allowing for easy reading and verification of information printed with magnetic ink through magnetic detection equipment, effectively preventing counterfeiting and tampering. The physically and chemically stable magnetic ink maintains its magnetic properties under various environmental conditions, ensuring stable performance during long-term storage and use. Fluorescent dyes emit fluorescence under specific light, easily distinguishing between genuine and counterfeit products. This unique fluorescence effect makes fluorescent dyes an effective anti-counterfeiting measure.

[0032] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A high-temperature resistant and corrosion-resistant heat transfer film, characterized in that: It includes a release paper layer (1), a hot melt adhesive layer (2), a pattern layer (3), a protective layer (4), and a protective layer (5). The hot melt adhesive layer (2) is disposed on the release paper layer (1), the pattern layer (3) is disposed on the hot melt adhesive layer (2), the protective layer (4) is disposed on the pattern layer (3), and the protective layer (5) is disposed on the protective layer (4).

2. The high-temperature resistant and corrosion-resistant heat transfer film according to claim 1, characterized in that, The protective layer (4) includes a heat insulation layer (41), a corrosion resistant layer (42), and a water-absorbing layer (43). The heat insulation layer (41) is disposed on the pattern layer (3), the corrosion resistant layer (42) is disposed on the heat insulation layer (41), and the water-absorbing layer (43) is disposed on the corrosion resistant layer (42).

3. The high-temperature resistant and corrosion-resistant heat transfer film according to claim 2, characterized in that, The absorbent layer (43) has blind holes, and absorbent particles (6) are placed inside the blind holes.

4. The high-temperature resistant and corrosion-resistant heat transfer film according to claim 3, characterized in that, The hot melt adhesive layer (2) is also provided with a tear paper (7), and a tear opening (8) is provided at the connection between the tear paper (7) and the hot melt adhesive layer (2).

5. The high-temperature resistant and corrosion-resistant heat transfer film according to claim 4, characterized in that, The tear (8) has multiple V-shaped through holes, and the sharp corners of the V-shaped through holes are perpendicular to the line connecting the tear paper (7) and the hot melt adhesive layer (2).

6. The high-temperature resistant and corrosion-resistant heat transfer film according to claim 5, characterized in that, The pattern layer (3) is also provided with anti-counterfeiting mark (9).

7. The high-temperature resistant and corrosion-resistant heat transfer film according to claim 6, characterized in that, The anti-counterfeiting label (9) is printed using one of the following: color-changing ink, magnetic ink, and fluorescent dye.

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