A gilding foil having a microstructure texture

Abstract

The utility model discloses a kind of gold stamping foil with microstructure texture, it is related to hot stamping material technical field, it aims at solving the process of traditional gold stamping foil in use, for the lack of deformation allowance of curved surface, special-shaped printing material, lead to rupture, wrinkle in hot-pressing process due to local excessive stretching, it is easy to produce the problem, including base paper component and metal foil component, the top of base paper component is provided with metal foil component;The base paper component includes base paper film, the top of base paper film is provided with sticky glue layer;The metal foil component includes the base film layer being set in the top of sticky glue layer, the top of base film layer is provided with gold foil wrinkle, the bottom of base film layer is provided with protruding anchor point, and the protruding anchor point penetrates sticky glue layer.The utility model is designed through base paper component and metal foil component, can be adapted to curved surface, special-shaped printing material, reduce the risk of stretching rupture.

Description

Technical Field

[0001] This utility model relates to the field of hot stamping materials technology, and more specifically, to a hot stamping foil with microstructure texture. Background Technology

[0002] Hot stamping foil, also known as foil stamping paper, is a type of hot stamping material mainly used to stamp patterns or text onto materials such as paper, leather, plastic, and fabric, serving both decorative and protective purposes. Hot stamping foil typically consists of metallic foil, adhesive, and backing paper. The metallic foil is the main component and determines the quality of the hot stamping effect. The adhesive bonds the metallic foil to the backing paper, which in turn carries the metallic foil and adhesive.

[0003] Existing hot stamping foils, when used on curved or irregularly shaped substrates such as cylindrical bottles, spherical bottle caps, and curved electronic product casings, lack the deformation allowance of flat hot stamping foils. During hot pressing, they are prone to cracking or wrinkling due to excessive local stretching, or the hot stamping layer may peel off due to poor adhesion. This limits the hot stamping process to flat substrates and makes it difficult to adapt to the increasingly diverse product appearance design needs. Based on the above problems, we propose a hot stamping foil with microstructure texture. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a hot stamping foil with microstructure texture to solve the problem that traditional hot stamping foil lacks deformation allowance for curved and irregularly shaped substrates, which leads to cracking and wrinkling due to excessive local stretching during hot pressing.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a hot stamping foil with microstructure texture, comprising a base paper assembly and a metal foil assembly, wherein the metal foil assembly is disposed on the top of the base paper assembly; the base paper assembly includes a base paper film, wherein an adhesive layer is disposed on the top of the base paper film; the metal foil assembly includes a base film layer disposed on the top of the adhesive layer, wherein gold foil wrinkles are disposed on the top of the base film layer, and raised anchor points are disposed on the bottom of the base film layer, wherein the raised anchor points penetrate the adhesive layer; The gold foil folds are arranged in a wavy shape, and raised ridges are formed at the junctions of the gold foil folds. Gas channels are formed at the junctions of the gold foil folds and the base film layer.

[0006] Preferably, the bottom paper film is provided with tear strips on both sides, the surface of the tear strips is provided with anti-slip texture, and the tear strips are curved.

[0007] Preferably, the surface of the adhesive layer is provided with a circular hole that matches the raised anchor point.

[0008] Preferably, the raised anchor points are arranged in a conical shape and are distributed in a dense array.

[0009] Preferably, the peak height of the gold foil folds is 5-15μm, the wavelength is 100-500μm, and the top surface of the raised ridges is provided with a transparent scratch-resistant coating.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model designs a base paper assembly and a metal foil assembly. The gold foil pleats in the metal foil assembly are arranged in a wave shape. The wave-shaped gold foil pleats have a certain deformation allowance. The deformation allowance of the wave-shaped pleats allows the foil material to adapt to curved and irregularly shaped substrates, reducing the risk of tensile breakage and reducing the breakage rate to below 10%. By setting raised anchor points at the bottom of the base film layer, the raised anchor points can be embedded into the tiny depressions on the surface of the substrate, such as the gaps between paper fibers and the texture of plastic surfaces, forming a physical bite and greatly improving adhesion. At the same time, the raised anchor point structure can disperse external frictional stress and reduce local detachment.

[0011] 2. This utility model further designs the metal foil assembly, forming raised ridges at the junctions of adjacent gold foil folds. These raised ridges enhance the wear resistance of the gold foil surface and prolong the duration of the decorative effect. The top surface of the raised ridges is coated with a transparent, scratch-resistant coating using a vacuum evaporation process. The coating material is polydimethylsiloxane, with a thickness of 1-3 μm. This coating not only has excellent scratch resistance but also isolates air and moisture, slowing down the oxidation rate of the gold foil folds and improving the weather resistance of the hot stamping foil. Air channels are naturally formed at the junctions of the gold foil folds and the base film layer. These channels are 10-30 μm wide and 2-5 μm deep, allowing for rapid air removal between the die and the gold foil folds during the hot stamping process. This prevents blurry graphics and blurred edges caused by residual air, making it particularly suitable for hot stamping fine graphics. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the bottom paper assembly structure of this utility model; Figure 3 This is an exploded view of the bottom paper assembly of this utility model; Figure 4 This is a schematic diagram of the gold foil component structure of this utility model; Figure 5 This is a schematic diagram of the exploded structure of the gold foil component of this utility model; Figure 6 This is a partially enlarged structural diagram of the gold foil component of this utility model.

[0013] The following are the labels in the diagram: 1. Backing paper assembly; 101. Backing paper film; 102. Tear strip; 103. Adhesive layer; 104. Round hole; 2. Metal foil assembly; 201. Base film layer; 202. Gold foil pleats; 203. Raised anchor point; 204. Air channel; 205. Raised ridge. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: This utility model relates to a hot stamping foil with a microstructure texture, comprising a base paper component 1 and a metal foil component 2. The metal foil component 2 is adhered to the top of the base paper component 1. The base paper component 1 includes a base paper film 101, and an adhesive layer 103 is adhered to the top of the base paper film 101. The base paper film 101 is made of PET film with a thickness of 50-80μm, which provides basic support and anti-deformation protection. Due to the excellent toughness and tensile strength of PET material, deformation of the metal foil component 2 due to external pressure and pulling is prevented during transportation and stacking, ensuring the flatness of the metal foil component 2, isolating external dust and moisture, and preventing contamination or oxygen exposure of the metal foil component 2 before use. To extend the storage period, the adhesive layer 103 uses an acrylic pressure-sensitive adhesive with a thickness of 10-20 μm, which is used to achieve stable bonding and non-destructive separation between the base paper assembly 1 and the metal foil assembly 2. The metal foil assembly 2 includes a base film layer 201 bonded to the top of the adhesive layer 103. The top of the base film layer 201 is integrally pressed to form gold foil pleats 202, and the bottom of the base film layer 201 is integrally pressed to form raised anchor points 203, which penetrate the adhesive layer 103. Among them, the gold foil pleats 202 are wavy, and the junctions of the gold foil pleats 202 form raised ridges 205. The junctions between the gold foil pleats 202 and the base film layer 201 form air passages. 204; The base film layer 201 serves as the basic framework of the metal foil assembly 2, supporting each functional layer and adapting to the hot stamping process conditions. It also provides support for the deformation adaptation of the gold foil pleats 202, preventing foil breakage due to base film stiffness. Raised anchor points 203 significantly enhance the adhesion between the hot stamping foil and the substrate, solving the problem of incomplete hot stamping and detachment. The gold foil pleats 202 provide "deformation allowance," adapting to curved and irregularly shaped substrates. Through the expansion and contraction of their pleats, they adapt to the curvature of the substrate, reducing the breakage rate to below 5%. The air guide channel 204 quickly expels air, ensuring a tight fit between the foil and the die head, solving the problem of residual air in fine graphic hot stamping. Raised ridges 205... To enhance surface abrasion resistance, this utility model designs a base paper assembly 1 and a metal foil assembly 2. The gold foil pleats 202 in the metal foil assembly 2 are arranged in a wave shape. The wave-shaped gold foil pleats 202 have a certain deformation allowance. The deformation allowance of the wave-shaped pleats allows the foil to adapt to curved and irregularly shaped substrates, reducing the risk of tensile breakage and reducing the breakage rate to below 10%. By setting raised anchor points 203 at the bottom of the base film layer 201, the raised anchor points 203 can be embedded into the tiny depressions on the surface of the substrate, such as the gaps between paper fibers and the texture of plastic surfaces, forming a physical bite and greatly improving adhesion. At the same time, the structure of the raised anchor points 203 can disperse external frictional stress and reduce local detachment.This invention further designs the metal foil assembly 2, in which raised ridges 205 are formed at the junctions of adjacent gold foil pleats 202. These raised ridges 205 enhance the wear resistance of the gold foil surface and prolong the duration of the decorative effect. A transparent, scratch-resistant coating is applied to the top surface of the raised ridges 205 using a vacuum evaporation process. The coating material is polydimethylsiloxane, with a thickness of 1-3 μm. This coating not only possesses excellent scratch resistance but also isolates air and moisture, slowing down the oxidation rate of the gold foil pleats 202 and improving the weather resistance of the hot stamping foil. A natural air-guiding channel 204 is formed at the junction of the gold foil pleats 202 and the base film layer 201. The channel width is 10-30 μm and the depth is 2-5 μm. The air-guiding channel 204 can quickly expel air between the die head and the gold foil pleats 202 during the hot stamping process, preventing blurry graphics and blurred edges caused by residual air, making it particularly suitable for hot stamping fine graphics.

[0015] Specifically, the backing paper film 101 has a tear strip 102 integrally formed on both sides. The surface of the tear strip 102 is embossed with anti-slip texture, and the tear strip 102 is curved. The tear strip 102 simplifies the backing paper peeling process and improves ease of use. The anti-slip texture on the surface increases the friction between the fingers and the tear strip 102.

[0016] More specifically, the surface of the adhesive layer 103 is provided with a circular hole 104 that matches the raised anchor point 203. The circular hole 104 on the surface of the adhesive layer 103 is precisely matched with the raised anchor point 203 of the metal foil assembly 2. This reduces the adhesion area between the adhesive layer and the anchor point through "point contact" and also prevents the metal foil assembly 2 from shifting on the bottom paper film 101 by positioning through the circular hole 104.

[0017] It is worth mentioning that the raised anchor points 203 are set in a conical shape. The conical raised anchor points 203 can be embedded into the tiny depressions on the surface of the substrate, such as the gaps between paper fibers and the texture of plastic surfaces, forming a physical bite and greatly improving adhesion. The raised anchor points 203 are densely distributed in an array. The array of anchor points can evenly distribute the stress generated by external friction and compression to multiple anchor points, avoiding stress concentration that could cause local coating peeling.

[0018] It is worth noting that the peak height of the gold foil wrinkles 202 is 5-15μm and the wavelength is 100-500μm. The top surface of the raised ridges 205 is coated with a transparent scratch-resistant coating. The coating tightly covers the surface of the gold foil wrinkles 202, forming a dense isolation film that blocks air and moisture from contacting the aluminum plating layer and slows down the rate of oxidation and blackening of the aluminum plating layer.

[0019] Working principle: This embodiment provides a hot stamping foil with microstructure texture. In use, by pinching the tear strips 102 on both sides of the base paper film 101 and pulling outward, the base paper assembly 1 and the metal foil assembly 2 can be quickly separated, avoiding damage to the edge of the hot stamping foil. With the raised anchor point 203 side of the metal foil assembly 2 facing the substrate, temperature and pressure are applied by the hot stamping equipment, causing the adhesive layer 103 to melt. The raised anchor point 203 is embedded into the depression on the surface of the substrate, forming a physical interlock and enhancing adhesion. The air channel 204 at the connection between the gold foil pleats 202 and the base film layer 201 exhausts air, ensuring that the graphics are complete and clear. The wavy gold foil pleats 202 adapt to the curvature of the substrate by deformation. After the temperature drops to room temperature, the adhesive layer 103 solidifies. The gold foil pleats 202 and the raised anchor point 203 work together to make the metal foil assembly 2 stably adhere to the surface of the substrate. The transparent scratch-resistant coating plays a role in wear resistance and anti-oxidation.

[0020] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A gilding foil having a microstructure texture, characterized by, The device includes a backing paper assembly (1) and a metal foil assembly (2). The metal foil assembly (2) is disposed on the top of the backing paper assembly (1). The backing paper assembly (1) includes a backing paper film (101), and an adhesive layer (103) is disposed on the top of the backing paper film (101). The metal foil assembly (2) includes a base film layer (201) disposed on the top of the adhesive layer (103). The top of the base film layer (201) is provided with gold foil wrinkles (202), and the bottom of the base film layer (201) is provided with raised anchor points (203), and the raised anchor points (203) penetrate the adhesive layer (103). The gold foil folds (202) are arranged in a wave shape, and the connecting and converging points of the gold foil folds (202) form raised ridges (205). The connecting points of the gold foil folds (202) and the base film layer (201) form air guiding channels (204).

2. The hot stamping foil with microstructure texture according to claim 1, characterized in that, The bottom paper film (101) is provided with tear strips (102) on both sides. The surface of the tear strips (102) is provided with anti-slip texture, and the tear strips (102) are curved.

3. The hot stamping foil with microstructure texture according to claim 2, characterized in that, The surface of the adhesive layer (103) is provided with a circular hole (104) that matches the raised anchor point (203).

4. The hot stamping foil with microstructure texture according to claim 3, characterized in that, The raised anchor points (203) are arranged in a conical shape and are distributed in a dense array.

5. A hot stamping foil with microstructure texture according to claim 4, characterized in that, The gold foil folds (202) have a peak height of 5-15μm and a wavelength of 100-500μm, and the top surface of the raised ribs (205) is provided with a transparent scratch-resistant coating.

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