Decorative film and household appliance

Abstract

The utility model relates to the technical field of decorative materials, and discloses a decorative film and a household electrical appliance, the decorative film is used for the household electrical appliance, the decorative film comprises a composite layered structure and a connecting layer, the composite layered structure comprises a solvent-free layer and a dry-method surface layer which are stacked, and the connecting layer is connected to one side, deviating from the dry-method surface layer, of the solvent-free layer. The connecting layer is used for being attached to the outer surface of the household appliance, and the connecting layer is a release film. According to the decorative film, the release film is arranged on the back face of the composite layered structure, when the decorative film is installed, the decorative film can be attached to a household appliance only by tearing off the release film on the back face, operation is convenient, the decorative film can be conveniently and rapidly installed, meanwhile, the composite layered structure comprises the dry-method surface layer and the solvent-free layer, and the solvent-free layer is arranged, so that the decorative film can be conveniently and rapidly installed. The solvent-free layer is formed by foaming slurry through a mixed reaction, a certain foam structure can be formed, the thickness of the composite layered structure can be increased, the physical performance of the decorative film can be improved to a certain extent, and the use requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of decorative materials, in particular to a decorative film and a household appliance. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] As people's living standards improve, users have higher and higher requirements for the appearance of household appliances. In order to make the shape of household appliances more beautiful, a decorative film with a beautifying function is usually provided on the housing of the household appliances.

[0004] When using existing decorative films, most of them are applied to the substrate by heating the hot melt adhesive layer. The operation is complicated, which has a certain impact on the use and has poor practicality. Utility Model Content

[0005] The purpose of the present invention is to at least solve the problem of complicated installation and inconvenient operation of decorative films. This purpose is achieved through the following technical solutions:

[0006] A first aspect of the present invention provides a decorative film for household appliances, the decorative film comprising:

[0007] Composite layered structure, including stacked solvent-free layers and dry-process top layers;

[0008] A connecting layer is connected to the side of the solvent-free layer facing away from the dry surface layer. The connecting layer is used to adhere to the outer surface of the household appliance. The connecting layer is a release film.

[0009] The decorative film of the utility model is provided with a release film on the back of the composite layered structure. When installing the decorative film, it is only necessary to tear off the release film on the back to apply the decorative film to the household appliance. The operation is convenient and the decorative film can be installed quickly and easily. At the same time, the composite layered structure includes a dry surface layer and a solvent-free layer. By providing the solvent-free layer, the solvent-free layer is foamed by the foaming slurry through a mixing reaction to form a certain pore structure, which can increase the thickness of the composite layered structure and improve the physical properties of the decorative film to a certain extent to meet the use requirements.

[0010] In addition, the decorative film according to the present invention may also have the following additional technical features:

[0011] In some embodiments of the present invention, the decorative film further includes an adhesive layer, and the adhesive layer is disposed between the connecting layer and the solvent-free layer.

[0012] In some embodiments of the present invention, the adhesive layer includes an adhesive portion, and the adhesive portion includes a pressure-sensitive adhesive structure or a UV-curable adhesive structure.

[0013] In some embodiments of the present invention, the solvent-free layer is at least partially a first mixed material part, which includes a solvent-free A component and a solvent-free B component. The solvent-free A component includes polyester polyol, filler, catalyst and foaming agent, and the solvent-free B component includes isocyanate prepolymer.

[0014] In some embodiments of the present invention, the composite layered structure further includes a dry-process intermediate layer, wherein the dry-process intermediate layer is connected between the solvent-free layer and the dry-process surface layer.

[0015] In some embodiments of the present invention, the dry-process intermediate layer includes a second mixed material portion, the dry-process surface layer includes a third mixed material portion, and the second mixed material portion and the third mixed material portion both include polyurethane resin, solvent, color paste and additives.

[0016] In some embodiments of the present invention, the thickness of the dry-process middle layer and the dry-process surface layer are both 0.1 mm-0.3 mm.

[0017] In some embodiments of the present invention, the composite layer structure further includes a functional layer, and the functional layer is stacked on a side of the dry surface layer away from the connecting layer.

[0018] Another aspect of the present invention provides a household appliance, comprising the decorative film as described in any one of the above items, wherein the decorative film is applied to the outer surface of the household appliance through the connecting layer.

[0019] In some embodiments of the present invention, the household appliance is a refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference numerals are used throughout the accompanying drawings to denote the same components. In the accompanying drawings:

[0021] Figure 1 The following schematically shows a structural diagram of a decorative film provided according to an embodiment of the present invention at a first viewing angle;

[0022] Figure 2 The structure diagram of the decorative film provided according to one embodiment of the present invention at a second viewing angle is schematically shown;

[0023] Figure 3 Schematically shows a schematic diagram of installing a decorative film according to an embodiment of the present invention;

[0024] Figure 4 The structural diagram of a decorative film provided according to another embodiment of the present invention is schematically shown.

[0025] The reference numerals are as follows:

[0026] 100. Decorative film;

[0027] 1. Composite layered structure;

[0028] 11. Solvent-free layer;

[0029] 12. Dry surface layer;

[0030] 13. Dry middle layer;

[0031] 14. Functional layer;

[0032] 2. Connection layer;

[0033] 21. Release film;

[0034] 3. Adhesive layer;

[0035] 4. Installation surface. DETAILED DESCRIPTION

[0036] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0037] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0038] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0039] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped over, an element described as "below" or "beneath" another element or feature would then be oriented "above" or "above" the other element or feature. Thus, the example term "below" can encompass both above and below orientations.

[0040] Currently, most home appliances sold on the market use steel plates, plastics, glass, etc. as their main exterior surfaces. While these surfaces vary, the appearance of a product is relatively fixed, which can easily lead to aesthetic fatigue after long-term use. Furthermore, existing exterior finishes are primarily based on screen printing, spray coating, and lamination, which are complex processes, have poor expressiveness, and lack stain or scratch resistance. Taking refrigerators as an example, existing refrigerator panels primarily include the following hard materials: 1) PCM panels, or colored pre-coated steel sheets, offer the advantages of high production efficiency, environmental friendliness, and moderate cost. However, their relatively poor flatness and monotonous color effects make them unsuitable for use as panel materials for high-end home appliances. They are primarily used as refrigerator side panels. 2) VCM panels, or coated colored steel sheets, offer a beautiful appearance and excellent processing properties. They are corrosion-resistant and scratch-resistant, and can present a variety of color appearances and texture effects. It is generally used for panels of high-end home appliances, but it is expensive and the surface film material has great limitations on its use; 3) Stainless steel plates are expensive and have poor fingerprint resistance, which affects the appearance; 4) Glass panels are easy to clean, have rich colors, are scratch-resistant and corrosion-resistant, but are fragile and have the risk of self-explosion; 5) SPC rock panels have high hardness, are scratch-resistant, wear-resistant, dirt-resistant and corrosion-resistant, but have high process requirements and high cost; 6) Synthetic leather decorative panels have excellent texture, diverse appearance and good touch, but the edges of synthetic leather are extremely difficult to process and are less used.

[0041] To enhance the aesthetics of home appliances, decorative films are often applied to their exteriors to enhance their aesthetics, making them more diverse and attuned to home furnishings. This approach requires a more tactile, functional, and user-friendly experience. Related art decorative films are produced by applying a film to a cloth base to create a dry-process synthetic leather product. This product is then adhered to a hard substrate using hot-melt adhesive and can be used as a refrigerator panel material. However, this method is complex, exhibits poor wrapping properties, and is difficult to manage edges and corners. Trimming can also cause the cloth base to delaminate, resulting in poor performance and practicality.

[0042] In view of this, the present embodiment provides a decorative film 100, which aims to facilitate operation by setting a release film 21 on the back of the composite layered structure 1. At the same time, by setting a solvent-free layer 11, the thickness of the composite layered structure 1 can be increased, and the material performance and practicality of the decorative film 100 can be improved, thereby solving the above-mentioned technical problems.

[0043] like Figures 1 to 3 As shown, according to an embodiment of the present invention, a decorative film 100 is provided for use on a household appliance. The decorative film 100 is applied to the outer surface of the household appliance.

[0044] The types of household appliances in the present invention are not limited and can be any type of household appliance that can be attached and connected to the decorative film 100, such as a refrigerator, air conditioner or freezer. The household appliance has a mounting surface 4, and the decorative film 100 is attached to the mounting surface 4. For ease of introduction, the household appliance is listed as a refrigerator in this embodiment, and the decorative film 100 can be attached to the refrigerator door. Of course, the decorative film 100 can also be attached to other locations of the refrigerator as needed. The decorative film 100 includes a composite layered structure 1 and a connecting layer 2. The composite layered structure 1 includes a stacked solvent-free layer 11 and a dry surface layer 12. The connecting layer 2 is connected to the side of the solvent-free layer 11 facing away from the dry surface layer 12. The connecting layer 2 is used to adhere to the outer surface of the household appliance. The connecting layer 2 is a release film 21. The release film 21 refers to a film with a distinguishable surface. After the film is torn off, it has a certain degree of stickiness and can be adhered to the surface of an object.

[0045] The release film 21 is made of, but not limited to, PET (polyethylene glycol terephthalate) or PVC (polyvinyl chloride), with a thickness of 0.1 mm to 0.4 mm, such as 0.1 mm, 0.2 mm, 0.3 mm, or 0.4 mm. This thickness is suitable for ease of molding and for providing suitable strength to the decorative film 100.

[0046] The decorative film 100 of the present invention is provided with a release film 21 on the back of the composite layered structure 1. When installing the decorative film 100, it is only necessary to tear off the release film 21 on the back to apply the decorative film 100 to the household appliance. The operation is convenient and the decorative film 100 can be installed quickly and easily. At the same time, the composite layered structure 1 includes a dry surface layer 12 and a solvent-free layer 11. By providing the solvent-free layer 11, the solvent-free layer 11 is foamed by the foaming slurry through a mixing reaction to form a certain pore structure, which can increase the thickness of the composite layered structure 1 and improve the physical properties of the decorative film 100 to a certain extent, meet the use requirements, and enhance the user experience.

[0047] In some embodiments of the present invention, the decorative film 100 further includes an adhesive layer 3 disposed between the connecting layer 2 and the solvent-free layer 11. The adhesive layer 3 can bond the connecting layer 2 to the composite layer structure 1. Specifically, the adhesive layer 3 includes an adhesive portion, which includes a pressure-sensitive adhesive structure or a UV-curable adhesive structure.

[0048] Among them, pressure-sensitive adhesive is a type of adhesive that is sensitive to pressure, has a low curing temperature, and has good viscosity and temperature resistance. UV-curing adhesive is a type of adhesive that cures by ultraviolet light. The product has a wide range of applications and has excellent bonding effects on plastics and various materials. It has the advantages of high bonding strength, fast curing speed, complete transparency after curing, long-term non-yellowing and pollution-free product, and simple use. The adhesive is applied to the solvent-free layer 11 on the back of the connecting layer 2 by roller coating, brushing, scraping, spraying, etc., with a coating amount of 10g / m 2 -40g / m 2 , the preferred coating amount is 25g / m 2 Then apply a layer of release film 21.

[0049] In some embodiments of the present invention, the composite layer structure 1 further includes a dry-process intermediate layer 13, which is disposed between the solvent-free layer 11 and the dry-process surface layer 12. Providing the dry-process intermediate layer 13 between the dry-process surface layer 12 and the solvent-free layer 11 increases the overall thickness of the composite layer structure 1 and improves the performance of the decorative film 100.

[0050] In some embodiments of the present invention, the dry-process intermediate layer 13 includes a second mixed material portion, and the dry-process surface layer 12 includes a third mixed material portion. Both the second mixed material portion and the third mixed material portion include polyurethane resin, solvent, color paste or color powder, and additives.

[0051] The dry surface layer 12 is made of a polyurethane resin material, PVC (polyvinyl chloride), or PU (polyurethane). The dry surface layer 12 is composed of the following components by weight: 80-120 parts polyurethane resin, 40-60 parts solvent, 1-30 parts color paste or color powder, and 0.1-3 parts additives. Preferably, the composition is 100 parts polyurethane resin, 50 parts solvent, 10 parts color paste or color powder, and 0.3 parts additives. The additives are one or more of a wear-resistant additive, a yellowing-resistant additive, and a leveling additive, so that the decorative film 100 has wear-resistant and yellowing-resistant properties. The preparation process of the dry surface layer 12 is as follows: a mixed resin slurry consisting of polyurethane resin, solvent, color paste or color powder and additives is scraped onto the release paper, the slurry is scraped to a thickness of 0.1mm-0.3mm, and then dried in an oven at a drying and curing temperature of 100℃-135℃, and then enters the process of coating the dry intermediate layer 13.

[0052] The composition and process of the dry intermediate layer 13 are similar or consistent with those of the dry surface layer 12. The slurry is coated on one side of the dry surface layer 12 with a scraping thickness of 0.1mm-0.3mm. Then, it is dried in an oven and then enters the process of coating the solvent-free layer 11. The drying and curing temperature is 100℃-135℃.

[0053] In some embodiments of the present invention, the solvent-free layer 11 is at least partially a first mixed material portion, which includes a solvent-free component A and a solvent-free component B. The solvent-free component A includes a polyester polyol, a filler, a catalyst, and a blowing agent, and the solvent-free component B includes an isocyanate prepolymer. The solvent-free component A is composed of the following components by weight: 100 parts polyester polyol, 30-60 parts filler, 0.01-0.3 parts catalyst, and 0.01-0.3 parts blowing agent. Preferably, the filler is 40 parts, the catalyst is 0.05 parts (the catalyst type is a tertiary amine salt heat-activated catalyst), and the blowing agent is 0.05 parts. The ratio of the solvent-free component A to the solvent-free component B is (1-3):1, preferably 2:1.

[0054] The preparation process of the solvent-free layer 11 is as follows: the solvent-free component A and the solvent-free component B are mixed evenly and then coated on the dry intermediate layer 13 in a certain proportion. The thickness of the coated wet material is 0.1-0.3 mm. The solvent-free layer 11 is dried and cooled and then peeled off from the release paper to obtain a composite layer structure 1. The front of the composite layer structure 1 is the dry surface layer 12, and the back is the solvent-free layer 11. The overall thickness is 0.2 mm to 0.4 mm. And because the side of the release paper where the dry surface layer 12 slurry is scraped has various patterns, the surface of the composite layer structure 1 has various decorative patterns. A roll-pressed pattern structure can also be formed. The pattern or pattern structure can also be formed by printing, by rolling, or by combining the two methods. It is easy to understand that there are many ways to form a pattern structure, and it is not limited to this.

[0055] The composite layered structure 1 of this embodiment does not need to be applied to a fabric base, making it easy to handle edges and corners, and preventing the fabric base from delaminating during trimming. Furthermore, the synthetic leather film is waterproof, flexible, and easy to clean, resulting in superior performance and practicality for the decorative film 100. Furthermore, the decorative film 100 exhibits excellent environmental performance. Due to its solvent-free process, the DMF (dimethylformamide, which is somewhat toxic and irritating) content in the finished product can be controlled to within 50 ppm (compared to 1000-3000 ppm for conventional wet-process PU synthetic leather), resulting in a minimal pollution-causing, safer and more environmentally friendly decorative film.

[0056] like Figure 4 As shown, in other embodiments of the present invention, the composite layer structure 1 further includes a functional layer 14, which is laminated on the side of the dry-process surface layer 12 facing away from the connecting layer 2. The functional layer 14 is applied to the side of the dry-process surface layer 12 facing away from the release film 21, i.e., connected to the front surface of the composite layer structure 1. The functional layer 14 can have different compositions to impart different functions. For example, a wear-resistant material can make the surface of the decorative film 100 scratch-resistant, wear-resistant, and easy to clean. Alternatively, a fire-resistant material can impart fireproof properties. Alternatively, an antibacterial material can impart antibacterial properties. These functions further enhance the performance of the decorative film 100 and extend its service life. The functional layer 14 can further diversify the functions of the decorative film 100, allowing it to adapt to different usage scenarios according to actual needs, thereby improving the performance of the decorative film 100.

[0057] The second aspect of the present invention provides a household appliance, comprising a decorative film 100 as described above, which is applied to the outer surface of the household appliance via a connecting layer 2. Since the household appliance adopts the decorative film 100 described above, the decorative film 100 is provided with a release film 21 on the back of the composite layer structure 1. When installing the decorative film 100, the decorative film 100 only needs to tear off the release film 21 on the back to apply the decorative film 100 to the household appliance. This is convenient and allows for quick and easy installation of the decorative film 100. The composite layer structure 1 includes a dry surface layer 12 and a solvent-free layer 11. By providing the solvent-free layer 11, the solvent-free layer 11 is foamed by a mixing reaction of a foaming slurry to form a certain pore structure, which can increase the thickness of the composite layer structure 1 and improve the physical properties of the decorative film 100 to a certain extent, meeting usage requirements and enhancing user experience.

[0058] Preferably, the household appliance is a refrigerator. When the user needs to change the appearance of the household appliance, the user can first cut the decorative film 100 according to the size of the refrigerator door, and then peel off the release film 21 from one side of the decorative film 100, apply the decorative film 100 of the corresponding size to the refrigerator door, and press the decorative film 100 to tightly adhere to the refrigerator door. It has excellent wrapping performance and will not produce wrinkles at the corners. It has a soft touch and a variety of textures. The texture, color and touch can be customized according to customer needs. The part that exceeds the edge of the door can be trimmed. Taking glass as an example, the film is applied to the glass, and the peel strength at 180° at room temperature (25°C) is ≥25N / 20mm. The types of household appliances are not limited to this. The types of household appliances whose shells can be attached and connected to the decorative film 100 are also included in the protection scope of the present utility model.

[0059] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A decorative film for household appliances, characterized in that: The decorative film comprises: Composite layered structure, including stacked solvent-free layers and dry-process top layers; A connecting layer is connected to the side of the solvent-free layer facing away from the dry surface layer. The connecting layer is used to adhere to the outer surface of the household appliance. The connecting layer is a release film.

2. The decorative film according to claim 1, characterized in that The decorative film further includes an adhesive layer disposed between the connecting layer and the solvent-free layer.

3. The decorative film according to claim 2, characterized in that: The adhesive layer includes an adhesive portion, and the adhesive portion includes a pressure-sensitive adhesive structure or an ultraviolet light curing adhesive structure.

4. The decorative film according to any one of claims 1 to 3, characterized in that The composite layer structure further includes a dry process intermediate layer connected between the solvent-free layer and the dry process surface layer.

5. The decorative film according to claim 4, characterized in that: The thickness of the dry-process middle layer and the dry-process surface layer are both 0.1 mm to 0.3 mm.

6. The decorative film according to any one of claims 1 to 3, characterized in that The composite layer structure further includes a functional layer, which is stacked on a side of the dry surface layer away from the connecting layer.

7. A household appliance, characterized in that: The decorative film comprises the decorative film according to any one of claims 1 to 6, wherein the decorative film is applied to the outer surface of the household appliance through the connecting layer.

8. The household appliance according to claim 7, characterized in that The household appliance is a refrigerator.

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