Novel decorative film

Abstract

The utility model relates to the field of decorative films, in particular to a novel decorative film which sequentially comprises a protective layer, a decorative layer, a bonding layer and a layer to be torn from top to bottom, and the decorative layer sequentially comprises a transparent layer and a color layer from one side close to the protective layer to one side close to the bonding layer. The transparent layer is a bright transparent layer or a matte transparent layer; the difference value between the reflection wavelength of the bright transparent layer and the reflection wavelength of the color layer does not exceed a first matching threshold value, so that the glossiness and distinctness of image of the decorative film are improved; the glossiness of the matte transparent layer does not exceed a first gloss threshold value, so that matte appearance presentation is brought to the decorative film. The color layer comprises at least one of an effect layer, a solid color layer, an effect solid color layer and a bottom color layer, and the decorative film is endowed with a color with a special effect.

Description

Technical Field

[0001] The utility model relates to the field of decorative films, and particularly to a novel decorative film. Background Art

[0002] At present, there are a large number of color-changing films sold on the market for changing the color of the film surface. Most of their structures use color-changing film materials attached to the surface (such as the surface of an automobile) to achieve different colors and effects. While protecting the original surface, different personalities can be reflected according to different color requirements.

[0003] However, most of the current color-changing films on the market adopt the technical scheme of directly transferring a color layer or a color effect layer on the surface of the substrate. The color-changing films with this structure have a single presentation effect, poor gloss and DOI (distinctness of image), and often have problems such as film surface scratches, edge shrinkage, fading, blistering, delamination, film peeling, and residual glue during application.

[0004] Therefore, how to enrich the appearance presentation of decorative films, improve the gloss and DOI of decorative films, and make the surface of decorative films not easily damaged is an urgent problem to be solved in the prior art. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a novel decorative film to solve the problems in the prior art that the appearance presentation of decorative films is single, the gloss and DOI are poor, and the surface is easily damaged.

[0006] To solve the above technical problems, the utility model provides a novel decorative film, which sequentially includes a protective layer, a decorative layer, an adhesive layer, and a layer to be torn from top to bottom;

[0007] The decorative layer sequentially includes a transparent layer and a color layer from the side close to the protective layer to the side close to the adhesive layer;

[0008] The transparent layer is a bright transparent layer or a matte transparent layer;

[0009] The difference between the reflection wavelength of the bright transparent layer and the reflection wavelength of the color layer does not exceed a first matching threshold;

[0010] The gloss of the matte transparent layer does not exceed a first gloss threshold;

[0011] The color layer includes at least one of an effect layer, a solid color layer, an effect solid color layer, and a bottom color layer;

[0012] The effect layer imparts a special appearance to the decorative film; the solid color layer is a colored layer that imparts different colors to the decorative film; the effect solid color layer is a colored layer with special effects that imparts colors with special effects to the decorative film; the base color layer is white or black, and the base color layer is used to adjust the covering power of the decorative layer;

[0013] The layer to be torn can be separated from the adhesive layer.

[0014] Optionally, in the novel decorative film, the difference in elongation at break of each layer in the decorative layer does not exceed a second matching threshold.

[0015] Optionally, in the novel decorative film, the transparent layer is a TPU or a cast-grade PVC layer, and the other film layers in the decorative layer are all cast-grade PVC layers.

[0016] Optionally, in the novel decorative film, the decorative layer is a decorative layer added with an anti-fog brightening agent; the anti-fog brightening agent includes a fluorescent brightening agent;

[0017] The addition amount range of the fluorescent brightening agent is from 0.01% to 0.20%, including the end point values;

[0018] The fluorescent brightening agent includes at least one of OB and OB-1.

[0019] Optionally, in the novel decorative film, the first gloss threshold does not exceed 70 GU.

[0020] Optionally, in the novel decorative film, the effect layer includes at least one of a pearlescent layer, an electro-optical layer, a metal layer, a multicolored layer, and a laser layer.

[0021] Optionally, in the novel decorative film, the glossiness of the bright transparent layer is not lower than a second gloss threshold;

[0022] The second gloss threshold is not lower than the first gloss threshold.

[0023] Optionally, in the novel decorative film, the layer to be torn is a gas-guide layer to be torn, and the adhesive layer is a pressure-sensitive adhesive layer.

[0024] Optionally, in the novel decorative film, the decorative layer further includes an anti-fouling layer; the anti-fouling layer is disposed on the upper surface of the transparent layer.

[0025] Optionally, in the novel decorative film, the anti-fouling layer includes at least one of a polyurethane layer, a polyacrylate layer, and a fluororesin layer.

[0026] The novel decorative film provided by the present utility model sequentially includes a protective layer, a decorative layer, an adhesive layer, and a layer to be torn from top to bottom; the decorative layer is a laminated structure, and sequentially includes a transparent layer and a color layer from the side close to the protective layer to the side close to the adhesive layer; the decorative layer with the laminated structure can flexibly select and set the transparent layer and the color layer according to the requirements of the decorative film. The transparent layer covers the surface of the color layer, playing a role in protecting the decorative layer, and preventing the set decorative film from being easily damaged due to external forces. The transparent layer is a bright transparent layer or a matte transparent layer; the difference between the reflection wavelength of the bright transparent layer and the reflection wavelength of the color layer does not exceed a first matching threshold, which can effectively improve the reflection effect of the decorative film, thereby improving the gloss and DOI of the decorative film; the gloss of the matte transparent layer does not exceed a first gloss threshold, thereby giving the decorative film a matte appearance. The color layer includes at least one of an effect layer, a solid color layer, an effect solid color layer, and a base color layer; the effect layer gives the decorative film a special effect appearance; the solid color layer is a colored layer, giving the decorative film different colors; the effect solid color layer is a colored layer with special effects, giving the decorative film colors with special effects; the base color layer is white or black, used to adjust the covering power of the decorative layer. The layer to be torn can be separated from the adhesive layer. At the same time, the present utility model uses the protective layer to cover the decorative layer from the outside, ensuring that the decorative layer that actually plays a decorative role will not be damaged during the transportation and installation of the novel decorative film. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 It is a schematic structural diagram of a specific embodiment of the novel decorative film provided by the present utility model;

[0029] Figure 2 It is a schematic flow diagram of a specific embodiment of the preparation method of the novel decorative film provided by the present utility model.

[0030] In the figure, it includes 100 - protective layer, 210 - transparent layer, 220 - color layer, 300 - adhesive layer, 400 - layer to be torn. Detailed Embodiments

[0031] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0032] The core of the utility model is to provide a new type of decorative film, and a structural schematic diagram of a specific implementation method is shown in FIG. Figure 1 As shown, it is called the specific embodiment 1, which includes a protective layer 100, a decorative layer, an adhesive layer 300 and a to-be-tear layer 400 from top to bottom;

[0033] The decoration layer includes a transparent layer 210 and a color layer 220 in sequence from a side close to the protection layer 100 to a side close to the adhesive layer 300;

[0034] The transparent layer 210 is a glossy transparent layer 210 or a matte transparent layer 210;

[0035] The difference between the reflection wavelength of the bright transparent layer 210 and the reflection wavelength of the color layer 220 does not exceed a first matching threshold;

[0036] The glossiness of the matte transparent layer 210 does not exceed a first glossiness threshold;

[0037] The color layer 220 includes at least one of an effect layer, a solid color layer, an effect solid color layer, and a base color layer; the to-be-torn layer 400 can be separated from the adhesive layer 300. The novel decorative film of the utility model adopts a laminated structure, and the protective layer 100 protects the appearance during product storage, transportation, and construction. The protective layer 100 can include at least one of a stretchable protective layer 100 and a non-stretchable protective layer 100. The base color layer is used to adjust the covering power of the decorative layer.

[0038] In addition to changing the color and appearance of the applied object, the decorative layer can also protect the applied object from being damaged by ultraviolet rays, sand, acid rain, bird droppings, resin, etc. in nature during use.

[0039] The base color layer is a black layer or a white layer, which determines the hiding power of the new decorative film. The hiding power refers to a quantitative description of the hiding effect of the structure below the new decorative film. The better the hiding effect, the higher the hiding power.

[0040] As a preferred embodiment, the difference in elongation at break between each layer in the decorative layer does not exceed a second matching threshold. Further, the transparent layer 210 is a TPU layer, and the other film layers in the decorative layer are all casting-grade PVC layers.

[0041] In this preferred embodiment, the transparent layer 210 is defined as a TPU (thermoplastic polyurethane) layer. TPU has better optical properties and is easier to prepare a layer with a reflection wavelength consistent with that of the color layer 220 (i.e., the difference in reflection wavelength does not exceed a first matching threshold). Moreover, in this preferred embodiment, the other film layers in the new decorative film are further defined as casting-grade PVC (polyvinyl chloride) films to better match the elongation at break of the TPU layer. The difference in elongation at break between the two film layers should be as small as possible to improve the mechanical property of the new decorative film without delamination and enhance the working stability of the new decorative film when subjected to external pulling force. The range of the second matching threshold is from 30% to 80%, including the endpoint values, such as any one of 30.0%, 42.3%, or 80.0%. Of course, other values can also be selected according to the actual situation, and the present invention does not limit this here. Of course, other materials can also be selected for the transparent layer 210 and the decorative layer, and the present invention does not limit this here.

[0042] The production method of the casting-grade PVC transparent layer is to obtain the PVC transparent layer 210 by coating and drying a transparent PVC coating solution; the designed thickness range of the casting-grade PVC film layer is from 0.005 mm to 0.050 mm, including the endpoint values, such as any one of 0.0050 mm, 0.0321 mm, or 0.0500 mm, and the corresponding refractive index range is from 1.44 to 1.55, including the endpoint values, such as any one of 1.440, 1.489, or 1.550; the size of the refractive index and the thickness of the transparent layer are flexibly designed and adjusted according to the reflection wavelength presented by the color layer 220; the adjustment of the refractive index can be carried out by selecting plasticizers with different refractive indices and adding nano-transparent fillers with different refractive indices.

[0043] The effect layer is obtained by adding fillers with special effects to the transparent PVC coating solution and then coating and drying to obtain a casting-grade PVC film layer with special effects. The corresponding special effects include pearlescent effect, electro-optical effect, metallic effect, iridescent effect, laser effect, etc.; the thickness of the effect layer depends on the particle size and thickness of the fillers so that the filler particles with special effects can be evenly spread on the surface of the transparent layer 210 to obtain the best appearance effect. The designed thickness range of the effect layer is from 0.003 mm to 0.030 mm, including the endpoint values, such as any one of 0.0030 mm, 0.0241 mm, or 0.0300 mm.

[0044] Furthermore, the effect layer includes at least one of a pearlescent layer, an electro-optical layer, a metal layer, a photochromic layer, and a laser layer. Different effect layers can be selected according to actual needs, thus greatly expanding the applicable scenarios of the novel decorative film in the present utility model.

[0045] The solid color layer can be a PVC coating solution formed by adding different colorants that can provide colors to a transparent PVC coating solution according to a color mixing ratio. After the coating solution is coated and dried, a casting-grade PVC solid color layer is obtained. The effect solid color layer is a combined composite layer of the solid color layer and the effect layer. Solid color is the color existing in nature. The solid color layer is a color layer, which determines the color presented after the novel decorative film is covered. Of course, the solid color layer can be a pure color layer with only one color throughout the layer, or a solid color combination layer including multiple color blocks.

[0046] Continuing with the above example, when the color layer 220 is a solid color layer, the refractive index of the color layer 220 is the refractive index of the composite color layer 220 after adding colorants and fillers. The refractive index of the composite color layer 220 is calculated according to formula (1):

[0047] n Y = (n1 2 *V1 + n2 2 *V2) 1 / 2 ; (1)

[0048] Wherein, n Y is the refractive index of the composite color layer 220, n1 is the refractive index of the composite color layer 220 without adding colorant fillers, n2 is the refractive index of the colorant fillers, V1 is the volume fraction of other materials in the composite color layer 220 excluding the colorant fillers, and V2 is the volume fraction of the colorant fillers.

[0049] When the reflection wavelength of the transparent layer 210 under the same incident light (such as natural light) is the same as the reflection wavelength of the color layer 220, the reflection effect of the novel decorative film can be effectively improved, thereby enhancing the glossiness and distinctness of image.

[0050] Of course, ideally, the reflection wavelengths of the transparent layer 210 and the color layer 220 should be exactly the same. In actual production, the range of the first matching threshold is from 100 nanometers to 200 nanometers, including the endpoint values, such as any one of 100.0 nanometers, 155.1 nanometers, or 200.0 nanometers. Of course, other values can also be selected according to actual situations, and the present utility model does not make any limitations here. Therefore, in order to make a novel decorative film of a certain color have higher glossiness and distinctness of image, the thickness and refractive index of the transparent layer 210 can be calculated according to formula (2)

[0051] λ = 4 / (2N - 1) * n T *dT ; (2)

[0052] wherein, n T is the refractive index of the transparent layer 210, d T is the thickness of the transparent layer 210, N is a positive integer, and λ is the reflection wavelength of the color layer 220.

[0053] Using the cast-grade PVC film layer as the transparent layer 210, in addition to advantages such as high gloss, good DOI, prominent color effect, excellent outdoor durability, and no risk of delamination in the laminated structure, the decorative layer of this solution can also be flexibly designed by adjusting the transparent layer 210 and the color layer 220 according to different requirements and special effects, so that the decorative film of the present utility model has a richer appearance presentation and meets the needs of more customers. In addition, the decorative layer of the present utility model adopts the cast-grade PVC production process, which can effectively improve production efficiency, save costs and reduce the construction difficulty.

[0054] As a preferred embodiment, the first gloss threshold does not exceed 70 GU. Through a large number of theoretical calculations and actual tests, when the gloss of the matte transparent layer 210 does not exceed 70 GU, its surface can achieve a better scattering effect to achieve matte. Of course, other gloss values can also be selected according to the actual situation, and the present utility model does not limit this here.

[0055] Furthermore, the gloss of the bright transparent layer 210 is not lower than the second gloss threshold;

[0056] The second gloss threshold is not lower than the first gloss threshold. Since the bright transparent layer 210 needs to be more transparent than the matte transparent layer 210, its gloss should not be too low. This preferred embodiment limits the gloss of the bright transparent layer 210 to be greater than that of the matte transparent layer 210, which is convenient for achieving more complex effects and greatly improves the versatility of the present utility model.

[0057] Preferably, the layer to be torn 400 is a release film layer or a release paper layer.

[0058] Furthermore, the release film layer can be a embossed release film layer, and the embossed release film layer can form patterns on the surface of the adhesive layer to improve the air guiding performance during pasting. Of course, the layer to be torn 400 can also be a release paper, and further can be an embossed release paper. The present utility model does not limit this here.

[0059] Furthermore, the adhesive layer 300 is a pressure-sensitive adhesive layer.

[0060] The adhesive layer 300 can effectively and conveniently adhere the new decorative film to the surface of the object to be pasted, and can be effectively removed during replacement. It is a removable pressure-sensitive adhesive layer that is activated by applying pressure only when needed to firmly fix the new decorative film.

[0061] As a preferred embodiment, the decorative layer further includes an anti-fouling layer; the anti-fouling layer is disposed on the upper surface of the transparent layer 210;

[0062] The anti-fouling layer includes at least one of a polyurethane layer, a polyacrylate layer, and a fluororesin layer.

[0063] Adding the anti-fouling layer to the decorative layer can greatly reduce the maintenance difficulty of the subsequent new decorative film. It only needs to be wiped simply. The above materials have good anti-fouling performance, low cost, and elongation at break that is more matched with other film layers. Of course, other materials can also be selected, and the present invention does not limit this here.

[0064] The following provides the composition of each film layer of a new decorative film layer. It should be noted that "XX parts" in the following text refers to the mass fraction of the corresponding component:

[0065] When the transparent layer 210 is transparent PVC, the corresponding transparent PVC coating solution includes:

[0066] PVC paste resin: 100 parts; plasticizer: 20 - 60 parts; additive: 0.5 - 15 parts; diluent: 50 - 80 parts; other additives: 0 - 1 part.

[0067] When the transparent layer 210 is transparent TPU, the corresponding transparent TPU coating solution includes:

[0068] TPU resin: 100 parts; diluent: 100 - 1000 parts; additive: 0 - 5 parts.

[0069] The corresponding PVC coating solution for the color layer 220 includes:

[0070] PVC paste resin: 100 parts; plasticizer: 20 - 60 parts; additive: 0.5 - 15 parts; diluent: 50 - 80 parts; pigment: 0.1 - 35 parts; other additives: 0 - 1 part; the pigment includes at least one of metallic pigment, pearlescent pigment, laser pigment, color-changing pigment, and solid-color pigment.

[0071] When the color layer 220 includes the solid-color layer, the corresponding PVC coating solution for the solid-color layer includes:

[0072] PVC paste resin: 100 parts; plasticizer: 20 - 60 parts; additive: 0.5 - 15 parts; diluent: 50 - 80 parts; pigment: 5 - 50 parts; other additives: 0 - 5 parts.

[0073] The parameter relationships among the transparent layer 210, the effect layer, the solid color layer, and the background color layer in a specific embodiment are given below. See Table 1 below for details.

[0074] Table 1

[0075]

[0076] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0077] Furthermore, the thickness range of the decorative layer is from 0.04 mm to 0.4 mm, including the end values, such as any one of 0.040 mm, 0.256 mm, or 0.400 mm; the thickness range of the transparent layer 210 is from 0.005 mm to 0.05 mm, including the end values, such as any one of 0.0050 mm, 0.01547 mm, or 0.5000 mm; the thickness range of the effect layer is from 0.003 mm to 0.05 mm, including the end values, such as any one of 0.0030 mm, 0.04147 mm, or 0.5000 mm; the thickness range of the solid color layer is from 0.02 mm to 0.2 mm, including the end values, such as any one of 0.020 mm, 0.116 mm, or 0.200 mm; the thickness range of the background color layer is from 0.02 mm to 0.1 mm, including the end values, such as any one of 0.020 mm, 0.098 mm, or 0.100 mm. The above ranges are the results of a large number of theoretical calculations and practical tests. The best film mechanical properties and display effects can be obtained within the above ranges. Of course, other parameters can also be adopted according to actual needs, and the present utility model does not limit this here.

[0078] The novel decorative film provided by the utility model sequentially includes a protective layer 100, a decorative layer, an adhesive layer 300 and a layer to be torn 400 from top to bottom; the decorative layer sequentially includes a transparent layer 210 and a color layer 220 from the side close to the protective layer 100 to the side close to the adhesive layer 300; the transparent layer 210 is a bright transparent layer 210 or a matte transparent layer 210; the difference between the reflection wavelength of the bright transparent layer 210 and the reflection wavelength of the color layer 220 does not exceed a first matching threshold; the glossiness of the matte transparent layer 210 does not exceed a first gloss threshold; the color layer 220 includes at least one of an effect layer, a solid color layer, an effect solid color layer and a base color layer; the effect layer can endow the decorative film with a special effect appearance presentation; the solid color layer is a color layer, endowing the decorative film with different colors; the effect solid color layer is a color layer with a special effect, endowing the decorative film with a color with a special effect; the base color layer is white or black, used to adjust the covering power of the decorative layer; the decorative layer with a stacked structure can flexibly select and set the transparent layer and the color layer according to the requirements of the decorative film. The layer to be torn 400 can be separated from the adhesive layer 300. When the transparent layer 210 is a bright transparent layer 210, the reflection wavelength of the bright transparent layer 210 is consistent with the reflection wavelength of the color layer 220, which can effectively improve the reflection effect of the novel decorative film, thereby improving the glossiness and distinctness of image of the film layer as a whole; when the transparent layer 210 is a matte transparent layer 210, it can bring a matte appearance presentation to the decorative film; and the transparent layer 210 can also play a role in protecting the decorative layer, avoiding the novel decorative film that has been set from being easily damaged by external forces. At the same time, the utility model uses the protective layer 100 to cover the decorative layer from the outside, ensuring that the decorative layer that actually plays a decorative role will not be damaged during the transportation and setting of the novel decorative film.

[0079] On the basis of the first specific embodiment, the novel decorative film is further adjusted accordingly to obtain the second specific embodiment. The corresponding structural schematic diagram is the same as the previous one, and it sequentially includes a protective layer 100, a decorative layer, an adhesive layer 300 and a layer to be torn 400 from top to bottom;

[0080] The decorative layer sequentially includes a transparent layer 210 and a color layer 220 from the side close to the protective layer 100 to the side close to the adhesive layer 300;

[0081] The color layer 220 includes at least one of an effect layer, a solid color layer, an effect solid color layer and a base color layer;

[0082] The transparent layer 210 is a bright transparent layer 210 or a matte transparent layer 210;

[0083] The difference between the reflection wavelength of the bright transparent layer 210 and the reflection wavelength of the color layer 220 does not exceed a first matching threshold;

[0084] The glossiness of the matte transparent layer 210 does not exceed a first gloss threshold;

[0085] The layer to be torn 400 can be separated from the adhesive layer 300;

[0086] The decorative layer is a decorative layer added with an anti-fog brightening agent.

[0087] The difference between this specific embodiment and the above specific embodiment lies in that the structural components of the decorative layer are defined in this specific embodiment, and the remaining structures are the same as those in the above specific embodiment, and will not be elaborated here.

[0088] In this specific embodiment, an anti-fog brightening agent is added to the decorative layer to further improve the transparency of the decorative layer. Of course, according to related technologies, it is easy to know that to achieve the above effect, the anti-fog brightening agent needs to be incorporated into other structures of the decorative layer of the non-color layer 220 and the non-bottom color layer. After adding the anti-fog brightening agent, the transparency of the film layer covering the color layer 220 is further improved, and the glossiness and vividness of the overall new decorative film layer are improved, solving the problem of fogging of the decorative film layer in related technologies.

[0089] Also, the anti-fog brightening agent includes a fluorescent whitening agent;

[0090] The addition amount range of the fluorescent whitening agent is from 0.01% to 0.20%, including the end point values;

[0091] The fluorescent whitening agent includes at least one of OB and OB-1.

[0092] In this preferred embodiment, a fluorescent whitening agent is added to the anti-fog brightening agent. The decorative layer after adding the fluorescent whitening agent can further increase transparency, and solves the problem of blueing of the transparent film layer in related technologies, making the reflection wavelengths of the transparent layer 210 and the color layer 220 easier to match.

[0093] Furthermore, the OB is 2,5-bis-(5-tert-butyl-2-benzoxazolyl)thiophene; the OB-1 is ethyl dipyridylphenyl bisbenzoxazole. The above two materials are low-cost and have good compatibility with the film layer components. Of course, other fluorescent whitening agents can also be used, and the present invention does not limit this here.

[0094] The present invention also provides a preparation method of a new decorative film, and a schematic flow diagram of a specific embodiment thereof is as Figure 2 shown, which is called the third specific embodiment, and includes:

[0095] S101: A bonding layer and a layer to be torn are sequentially arranged outward on the first surface of the decorative layer; the decorative layer includes a transparent layer and a color layer, and the first surface is the surface of the color layer; the transparent layer is a bright transparent layer or a matte transparent layer; the difference between the reflection wavelength of the bright transparent layer and the reflection wavelength of the color layer does not exceed a first matching threshold; the glossiness of the matte transparent layer does not exceed a first gloss threshold.

[0096] S102: A protective layer is arranged on the second surface of the decorative layer to obtain the novel decorative film; the second surface is the surface opposite to the first surface.

[0097] The preparation method of the novel decorative film in this specific embodiment corresponds to the novel decorative film in the previous text. Therefore, the technical details of the preparation method of the novel decorative film can be referred to the previous text, and the present invention will not be elaborated here.

[0098] Specifically, the color layer can be a layer formed by spraying.

[0099] Among them, the transparent layer can be a layer formed by laminating or spraying. The present invention does not make a limitation here and can be selected according to actual needs.

[0100] Certainly, in actual production, a substrate film can be used as an intermediate film layer to produce the novel decorative film. The transparent layer and the color layer can be sequentially arranged on the substrate film to obtain a base film layer, which is convenient for process operation. The substrate film can be removed at an appropriate stage later.

[0101] As a specific embodiment, the color layer and the transparent layer can be sequentially coated on the substrate film to obtain the decorative layer. Then, a pressure-sensitive adhesive layer and a layer to be torn are laminated or coated on the back of the decorative layer, and a protective layer is laminated on the transparent surface, so as to obtain the novel decorative film of the present invention.

[0102] The transparent layer of the present invention covers the surface of the color layer and has higher transparency. In addition to improving the appearance effect of the novel decorative film, it can effectively avoid the color change caused by scratching during the installation construction and long-term use of the decorative film, and effectively improve the scratch resistance of the product; in addition, the transparent layer can prevent the color layer from being directly exposed to the air, and can effectively avoid the color change of the color layer caused by long-term outdoor sunlight, rain and dust pollution; furthermore, the transparent layer contains an ultraviolet absorber, which can effectively prevent the color layer from being damaged by ultraviolet rays, thereby improving the outdoor durability of the novel decorative film.

[0103] As a specific embodiment, the preparation method of the transparent layer of the present invention includes the following steps:

[0104] The transparent layer coating material is evenly coated on the substrate film. After baking in an oven at 80 °C for 2 minutes, the oven is heated up to 200 °C at a gradient and kept at 200 °C for 3 minutes, and then cooled down to obtain the coating of the transparent layer. The coating method can be selected from knife coating, roll coating, and spraying methods, and the specific coating method is not limited; the coating thickness is set according to different requirements.

[0105] As a specific embodiment, the preparation method of the effect layer of the present utility model includes the following steps:

[0106] The effect layer coating material is evenly coated on the surface of the transparent layer above. After baking in an oven at 80 °C for 2 minutes, the oven is heated up to 200 °C at a gradient and kept at 200 °C for 3 minutes, and then cooled down to obtain the special effect coating containing the transparent layer. The coating method can be selected from knife coating, roll coating, and spraying methods, and the specific coating method is not limited; the coating thickness is set according to different requirements.

[0107] As a specific embodiment, the preparation method of the color layer of the present utility model includes the following steps:

[0108] The color layer coating material prepared by color matching is evenly coated on the surface of the transparent layer above or on the surface of the effect layer above. After baking in an oven at 80 °C for 2 minutes, the oven is heated up to 200 °C at a gradient and kept at 200 °C for 3 minutes, and then cooled down to obtain the specific color layer 220 containing the transparent layer or the specific color coating with the transparent layer and special effects. The coating method can be selected from knife coating, roll coating, and spraying methods, and the specific coating method is not limited; the coating thickness is set according to different requirements.

[0109] When the color layer includes a base color layer, as a specific embodiment, the preparation method of the base color layer of the present utility model includes the following steps:

[0110] The prepared white or black base color coating material is evenly coated on the surface of the color layer above according to needs. After baking in an oven at 80 °C for 2 minutes, the oven is heated up to 200 °C at a gradient and kept at 200 °C for 3 minutes, and then cooled down to obtain the base film of the new decorative film containing the base color layer. The selection of the white or black base color is determined according to different target color schemes and presentation effects. When selecting, in addition to ensuring the color effect, it is also necessary to ensure that the selected scheme can provide sufficient covering power; the coating method can be selected from knife coating, roll coating, and spraying methods, and the specific coating method is not limited; the coating thickness is set according to different requirements.

[0111] As a specific embodiment, the preparation method of the pressure-sensitive adhesive layer of the present utility model includes the following steps:

[0112] After coating a pressure-sensitive adhesive layer on the surface of the embossed release film and drying, cross-linking and curing it, then laminating it with the surface of the above-mentioned casting-grade PVC base film, while removing the substrate film, and applying a protective layer on the surface of the transparent layer in contact with the substrate film, the novel decorative film can be obtained; or directly coating a pressure-sensitive adhesive layer on the color layer surface of the casting-grade PVC base film, drying, cross-linking and curing it, directly laminating it with the layer to be torn, while removing the substrate film, and applying a protective layer on the surface of the transparent layer in contact with the substrate film, the novel decorative film can be obtained.

[0113] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method section.

[0114] It should be noted that in this specification, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0115] The above has introduced the novel decorative film provided by the present utility model in detail. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A new type of decorative film, characterized in that, From top to bottom, it successively includes a protective layer, a decorative layer, an adhesive layer and a layer to be torn; The decorative layer successively includes a transparent layer and a color layer from the side close to the protective layer to the side close to the adhesive layer; The transparent layer is a bright transparent layer or a matte transparent layer; The difference between the reflection wavelength of the bright transparent layer and the reflection wavelength of the color layer does not exceed a first matching threshold; The glossiness of the matte transparent layer does not exceed a first gloss threshold; The color layer includes at least one of an effect layer, a solid color layer, an effect solid color layer and a base color layer; The layer to be torn can be separated from the adhesive layer.

2. The novel decorative film according to claim 1, characterized in that, The difference in elongation at break of each layer in the decorative layer does not exceed a second matching threshold.

3. The novel decorative film according to claim 1, characterized in that, The transparent layer is a TPU or a casting-grade PVC layer, and the other film layers in the decorative layer are all casting-grade PVC layers.

4. The novel decorative film according to claim 1, characterized in that, The first gloss threshold does not exceed 70 GU.

5. The novel decorative film as claimed in claim 1, wherein The effect layer includes at least one of a pearlescent layer, an electro-optical layer, a metal layer, a multicolor layer, a laser layer.

6. The novel decorative film according to claim 1, characterized in that, The glossiness of the bright transparent layer is not lower than a second gloss threshold; The second gloss threshold is not lower than the first gloss threshold.

7. The novel decorative film according to claim 1, characterized in that, The layer to be torn is a gas-guiding layer to be torn, and the adhesive layer is a pressure-sensitive adhesive layer.

8. The novel decorative film according to claim 1, characterized in that, The decorative layer further includes an anti-fouling layer; the anti-fouling layer is disposed on the upper surface of the transparent layer.

9. The novel decorative film according to claim 8, characterized in that, The anti-fouling layer includes at least one of a polyurethane layer, a polyacrylate layer and a fluororesin layer.

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