Multilayer 3D sticker

Abstract

This invention provides a multi-layered three-dimensional sticker that achieves good elasticity and cushioning performance in stickers, balances decorative effect with overall structural stability, and maintains the integrity of its three-dimensional shape even when applied to complex curved surfaces. [Solution] The multilayer three-dimensional sticker includes a pattern layer 1, a base layer 2, and an elastic layer 3 made of EVA material, the elastic layer being located between the pattern layer and the base layer, the pattern layer covering the surface of the elastic layer and fixedly connected to the elastic layer, the elastic layer being fixedly connected to the base layer, and an adhesive being provided on the surface of the base layer opposite to the elastic layer.

Description

Technical Field

[0001] This application relates to the field of stickers, particularly to multi-layer three-dimensional stickers.

Background Art

[0002] A sticker is a decorative or functional label with paper, plastic, fabric or other materials as the base material, and an adhesive substance is coated on the back surface, and it is used to be pasted on the surface of various objects.

[0003] Three-dimensional stickers have higher aesthetic and three-dimensional senses. However, many commercially available three-dimensional stickers are molded with a single material. While the process is simple and the cost is low, due to its inherent technical defects, the upper limit of its performance and the scope of application are limited, and it cannot simultaneously meet various important performances required for three-dimensional stickers. [[ID=I8]]

Summary of the Invention

[0004] This application provides a multi-layer three-dimensional sticker in order to improve the comprehensive performance of the sticker.

[0005] The multi-layer three-dimensional sticker provided in this application adopts the following technical solutions.

[0006] It includes a pattern layer, a base layer, and an elastic layer made of EVA material. The elastic layer is located between the pattern layer and the base layer. The pattern layer covers the surface of the elastic layer and is fixedly connected to the elastic layer. The elastic layer is fixedly connected to the base layer. An adhesive is provided on the surface of the base layer opposite to the elastic layer. A multi-layer three-dimensional sticker.

[0007] By incorporating an elastic layer made of EVA material and forming a three-dimensional structure within this elastic layer, good elasticity and cushioning performance are achieved in the sticker. Furthermore, the composite structure of the pattern layer, elastic layer, and base layer balances decorative effect with overall structural stability, maintaining the integrity of the three-dimensional shape even when the sticker is applied to complex curved surfaces, thereby improving the product's practicality and applicability.

[0008] Optionally, the pattern layer is made of PVC material.

[0009] By utilizing the weather resistance, flexibility, and color expressiveness of PVC material, the durability and visual texture of the sticker surface pattern are enhanced, while the sticker's resistance to friction, light exposure, and minor chemical corrosion during everyday use is improved, extending its decorative lifespan.

[0010] Optionally, the base layer is made of PET material.

[0011] The excellent dimensional stability and mechanical strength of PET material provide stickers with a reliable support base and a smooth bonding effect, which is advantageous for maintaining the shape of stickers during long-term use and facilitates strong bonding to the surfaces of various substrates.

[0012] Optionally, the pattern layer and the elastic layer are pre-compounded with an adhesive.

[0013] By adopting the above technical proposal, it is advantageous to achieve initial positioning and bonding of the two layers of material before the main molding process, reducing misalignment and deformation in subsequent processing, improving the yield rate and bonding accuracy of the production, strengthening the interlayer bonding force, and preventing the pattern layer and elastic layer from peeling off during use.

[0014] Optionally, the pattern layer, elastic layer, and base layer are molded by high-frequency thermo-pressure.

[0015] By utilizing high-frequency thermo-pressure technology to achieve simultaneous welding and fabrication of multilayer materials, not only is production efficiency improved, but each layer is firmly bonded to each other, ensuring that there are no obvious air bubbles or delamination phenomena, and the details of the three-dimensional fabricated parts are fabricated with high precision, resulting in a final product with good unity and visual three-dimensionality.

[0016] Optionally, the multilayer three-dimensional sticker further includes an elastic body fixedly connected to the pattern layer.

[0017] By adopting the above technical proposal, the sticker acquires a richer and more flexible local elastic deformation capability in addition to its original three-dimensional form. The elastic material can be designed into the form of independent or combined protrusions, patterns, etc., further enhancing the tactile sense of layering and the visual three-dimensional effect. Furthermore, its elastic properties improve the adaptability and durability when the sticker is applied to non-planar or dynamic surfaces, enriching the product design possibilities and user experience.

[0018] The elastic body is optionally made of silicone rubber material.

[0019] Silicone rubber material possesses excellent biocompatibility, heat resistance, a soft feel, and stable chemical properties. This makes elastic materials not only safe and environmentally friendly, but also allows them to maintain their elasticity over a wide temperature range, reducing the likelihood of hardening or brittleness due to aging. Furthermore, the surface of silicone rubber is easy to process, allowing for matte, glossy, or special textures, further enhancing the sensory quality and premium feel of stickers. This expands its application to fields with higher safety requirements, such as toys, stationery, and electronic product decoration.

[0020] Optionally, the elastic body and the pattern layer are connected by adhesive.

[0021] By adopting the above technical solution, since the adhesive connection method is adopted, the process is mature and highly reliable, and precise positioning and strong bonding between the elastic body and the pattern layer can be easily achieved, which is particularly suitable for attaching small, thin, or complex-shaped elastic body parts to the pattern layer. Such a method provides good design freedom, enables flexible combination of elastic bodies of different colors, shapes or hardnesses on the sticker surface to form various three-dimensional decorative effects, and ensures that the elastic body is not easily detached during use, maintaining the integrity of the overall structure of the product.

[0022] Optionally, the pattern layer is formed with limit slots for inserting the ends of the elastic body.

[0023] By adopting the above technical solution, the limit slots assist in fixing the elastic body and, combined with the adhesive connection method, form a double fixing mechanism. The limit slots provide precise positioning reference and physical restraint for the elastic body, effectively preventing the elastic body from undergoing lateral displacement or rotation under force during production or use, and significantly improving the assembly accuracy and connection reliability. At the same time, such a design enables more flexible design of the shape and fixing points of the elastic body, enhancing the complexity and stability of the three-dimensional structure and making the three-dimensional shaping of the sticker more delicate and sustainable.

Brief Description of the Drawings

[0024] [Figure 1] Figure 1 is a perspective view of Example 1 of the present application. [Figure 2] Figure 2 is a cross-sectional view of Example 1 of the present application. [Figure 3] Figure 3 is a perspective view of Example 2 of the present application. [Figure 4] Figure 4 is a cross-sectional view of Example 2 of the present application.

Modes for Carrying Out the Invention

[0025] Hereinafter, the present application will be described in more detail in conjunction with Figures 1 to 4.

[0026] Example 1 In this example, a multi-layer three-dimensional sticker is disclosed. Referring to FIGS. 1 and 2, the multi-layer three-dimensional sticker includes a pattern layer 1, a base layer 2, and an elastic layer 3. The elastic layer 3 is located between the pattern layer Ⅰ and the base layer 2. The pattern layer 1 covers the surface of the elastic layer 3 and is fixedly connected to the elastic layer 3. The elastic layer 3 is fixedly connected to the base layer 2. An adhesive is provided on the surface of the base layer 2 opposite to the elastic layer 3. This application achieves the effect of making both the decorative effect of the sticker and the stability of the overall structure compatible, and improving the practicality and application range of the product. This is because by combining a multi-layer structure, different layers can exert their respective advantages. The pattern layer 1 provides a decorative function, the elastic layer 3 imparts elasticity and three-dimensional shaping, and the base layer 2 ensures the stability of the structure, enabling the sticker to adapt to complex curved surfaces and maintain its three-dimensional shape.

[0027] Referring to FIG. 2, the pattern layer 1 is made of PVC material, and a pattern is printed thereon. The PVC material has characteristics such as weather resistance, flexibility, and color expressiveness. Due to its weather resistance, under different climatic conditions such as sunlight and rain, the pattern on the surface of the sticker is less likely to fade or deform and can remain vivid and clear for a long time. Due to its flexibility, the pattern layer 1 can be adhered to the surfaces of objects of various shapes and is not easily torn. Due to its color expressiveness, the pattern is more vividly and realistically expressed, enhancing the visual effect. Besides the PVC material, the pattern layer 1 may also be replaced with other materials such as TPU material that has similar good flexibility and wear resistance and can meet some of the performance requirements of the pattern layer 1.

[0028] It should be noted that there seems to be a small error in the original text where "パターン層1" is written as "パターン層Ⅰ" in one place, and I have corrected it in the translation.Referring to Figure 2, the elastic layer 3 is made of EVA material, which has good elasticity and cushioning properties. The elastic layer 3 can have various shapes, such as circular protrusions, rectangular protrusions, and animal shapes, enhancing the three-dimensional effect and aesthetics of the sticker. When manufacturing the elastic layer 3, the thickness of certain areas can be increased by methods such as die pressing to form three-dimensional shapes. The elastic layer 3 may be replaced with materials other than EVA, such as rubber, which has high elasticity and good wear resistance.

[0029] Referring to Figure 2, the base layer 2 is made of PET material. PET material has excellent dimensional stability and mechanical strength. Due to its dimensional stability, the sticker can maintain its shape and resist deformation during long-term use. Due to its mechanical strength, the sticker is not easily damaged when subjected to a certain external force. In addition to PET material, the base layer 2 may be replaced with PP material, which has good chemical resistance and rigidity.

[0030] The pattern layer 1 and the elastic layer 3 are first pre-compounded with an adhesive, which may be a general environmentally friendly adhesive, such as an acrylic ester-based adhesive. Pre-compounding with an adhesive is advantageous for achieving initial positioning and bonding of the two layers of material before main molding, reducing misalignment and deformation in subsequent processing, improving the yield rate and bonding accuracy of the production, and strengthening the interlayer bonding force, preventing the pattern layer 1 and the elastic layer 3 from delaminating during use. After the elastic layer 3 and the pattern layer 1 are pre-compounded with an adhesive, they are further fixedly connected to the base layer 2, and this fixed connection method ensures the stability of the multilayer structure.

[0031] After the pattern layer 1 and elastic layer 3 are pre-compounded, the pattern layer 1, elastic layer 3, and base layer 2 are molded by high-frequency thermo-pressure. High-frequency thermo-pressure technology enables simultaneous welding and molding of multilayer materials, improving production efficiency. It also ensures that each layer is firmly bonded to each other, preventing obvious air bubbles or delamination, and allows for high-precision molding of the details of the three-dimensional parts, resulting in a final product with good unity and visual three-dimensionality. In high-frequency thermo-pressure, multilayer materials fuse together under the action of high temperature and pressure to become a single unit.

[0032] The manufacturing process for the multilayer three-dimensional sticker of this embodiment is as follows: First, a pattern is printed onto a PVC film to form a pattern layer 1. Next, the pattern layer 1 is pre-compounded onto the surface of an EVA elastic layer 3. Then, the elastic layer 3 is bonded to the surface of a PET base layer 2. Next, high-frequency thermo-pressure molding is performed to firmly bond the elastic layer 3 to the pattern layer 1 and the base layer 2, respectively. Finally, an adhesive is applied to the back surface of the base layer 2.

[0033] Example 2: Referring to Figures 3 and 4, this embodiment differs from Embodiment 1 in that the multilayer three-dimensional sticker further includes an elastic body 4 fixedly connected to the pattern layer 1. With the addition of the elastic body 4, the sticker acquires a richer and more flexible local elastic deformation capability in addition to its original three-dimensional shape.

[0034] Referring to Figure 4, the elastic body 4 is made of silicone rubber material. Silicone rubber material has good biocompatibility, heat resistance, a soft feel, and stable chemical properties. Due to its biocompatibility, the sticker can be used in fields where there is a high demand for material safety, such as toys and stationery. Due to its heat resistance, the elastic body 4 maintains its elasticity over a wide temperature range and is less prone to hardening and brittleness due to aging. Due to its soft feel, it improves the user's tactile experience, and due to its stable chemical properties, the elastic body 4 is less susceptible to corrosion by chemicals. The elastic body 4 may be replaced with materials other than silicone rubber material, such as TPU material, which has high elasticity and good abrasion resistance.

[0035] The elastic body 4 and the pattern layer 1 are connected by an adhesive, which may be a special adhesive for bonding silicone rubber and PVC materials. The adhesive connection method is a mature and reliable process that easily achieves precise positioning and strong bonding between the elastic body 4 and the pattern layer 1, and is particularly suitable for attaching small, thin, or complexly shaped parts of the elastic body 4 to the pattern layer 1. This method offers good design freedom, allowing for flexible combination of elastic bodies 4 of different colors, shapes, or hardnesses on the sticker surface to form diverse three-dimensional decorative effects, while ensuring that the elastic body 4 is less likely to detach during use and maintaining the overall structural integrity of the product.

[0036] Referring to Figure 4, the pattern layer 1 has limit slots 11 formed by high-frequency thermo-pressure for inserting the ends of the elastic body 4. The limit slots 11 auxiliaryly fix the elastic body 4 and, in combination with the adhesive connection method, form a double fixing mechanism. The limit slots 11 provide the elastic body 4 with a precise positioning reference and physical constraint, effectively preventing lateral displacement or rotation of the elastic body 4 when subjected to force during production or use, and significantly improving assembly accuracy and connection reliability. At the same time, this design allows for more flexible design of the shape and fixing points of the elastic body 4, increasing the complexity and stability of the three-dimensional structure, resulting in a more detailed and durable three-dimensional sticker.

[0037] All of the above are preferred embodiments of the present application and do not limit the scope of protection thereunder; therefore, all equivalent modifications made based on the structure, shape, and principle of the present application should be included within the scope of protection. [Explanation of symbols]

[0038] 1. Pattern layer; 11. Limit slots; 2. Base layer; 3. Elastic layer; 4. Elastic body.

Claims

1. A multilayer three-dimensional sticker comprising a pattern layer (1), a base layer (2), and an elastic layer (3) made of EVA material, wherein the elastic layer (3) is located between the pattern layer (1) and the base layer (2), the pattern layer (1) covers the surface of the elastic layer (3) and is fixedly connected to the elastic layer (3), the elastic layer (3) is fixedly connected to the base layer (2), and an adhesive is provided on the surface of the base layer (2) opposite to the elastic layer (3).

2. The multilayer three-dimensional sticker according to claim 1, characterized in that the pattern layer (1) is made of PVC material.

3. The multilayer three-dimensional sticker according to claim 1 or 2, characterized in that the base layer (2) is made of PET material.

4. The multilayer three-dimensional sticker according to claim 1 or 2, characterized in that the pattern layer (1) and the elastic layer (3) are pre-compounded with an adhesive.

5. The multilayer three-dimensional sticker according to claim 1 or 2, characterized in that the pattern layer (1), elastic layer (3), and base layer (2) are molded by high-frequency thermo-pressure.

6. The multilayer three-dimensional sticker according to claim 1, further comprising an elastic body (4) fixedly connected to a pattern layer (1).

7. The multilayer three-dimensional sticker according to claim 6, characterized in that the elastic body (4) is made of a silicone rubber material.

8. The multilayer three-dimensional sticker according to claim 6 or 7, characterized in that the elastic body (4) and the pattern layer (1) are connected by adhesive.

9. The multilayer three-dimensional sticker according to claim 6 or 7, characterized in that the pattern layer (1) has limit slots (11) formed therein for inserting the ends of the elastic body (4).

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