Weather-resistant metal film

Abstract

The invention discloses a weather-proof metal film which is attached to a vamp material and sequentially comprises a bonding layer, a heat insulation layer and a decoration layer, the bonding layer is used for bonding the vamp material and the heat insulation layer, the decoration layer is connected with the heat insulation layer, the decoration layer sequentially comprises a first layer, a second layer and a third layer, the first layer is connected with the heat insulation layer, the third layer is made of a PU material containing weather-proof metal powder, and the second layer is made of a PU material containing weather-proof metal powder. At least two adjacent layers of the first layer, the second layer and the third layer are provided with different lines, the third layer and / or the second layer are transparent, at least one of the first layer and the second layer is made of a PU material containing weather-proof metal powder, at least one of the first layer, the second layer and the third layer is provided with different colors, and the third layer and / or the second layer is transparent. And the weather-proof metal powder is aluminum powder. By the adoption of the technical scheme, the weather resistance of the composite hot pasting film can be improved.

Description

Technical Field

[0001] The present application relates to the field of shoe materials, and in particular to a weather-resistant metal film. Background Art

[0002] In the production process of shoes, in order to enhance the waterproofness and wear resistance of the upper material, a composite thermal film is applied to the surface of the upper material. The thermal film technology heats the film layer to tightly bond with the upper material, thereby enhancing the various properties of the upper. After the composite thermal film is applied to the upper material, the waterproofness, wear resistance, tear resistance, etc. of the upper material will be significantly improved, and it will also help maintain the shape and stability of the shoe. However, the existing composite thermal film has poor weather resistance. Summary of the invention

[0003] The purpose of the present application is to provide a weather-resistant metal film, which is beneficial to improving the weather resistance of the composite thermal film.

[0004] In order to achieve the above purpose, the following technical solutions are adopted:

[0005] The first technical solution relates to a weather-resistant metal film, which is attached to a shoe upper material, and comprises an adhesive layer, a heat-insulating layer and a decorative layer in sequence, wherein the adhesive layer bonds the shoe upper material and the heat-insulating layer, the decorative layer is connected to the heat-insulating layer, the decorative layer comprises a first layer, a second layer and a third layer in sequence, the first layer is connected to the heat-insulating layer, the third layer is made of PU material containing weather-resistant metal powder, at least two adjacent layers of the first layer, the second layer and the third layer are provided with different patterns, and the third layer and / or the second layer are transparent.

[0006] The second technical solution is based on the first technical solution, wherein at least one of the first layer and the second layer is made of PU material containing metal powder.

[0007] The third technical solution is based on the second technical solution, wherein at least one of the first layer, the second layer and the third layer is provided with a different color and the third layer and / or the second layer is transparent.

[0008] The fourth technical solution is based on the third technical solution, wherein the metal powder is aluminum powder.

[0009] The fifth technical solution is based on the fourth technical solution, wherein the PU material is a water-based polyurethane raw material.

[0010] The sixth technical solution is based on the fifth technical solution, wherein the adhesive layer is a low-temperature TPU hot-melt adhesive film, the thickness of the adhesive layer is 0.05 to 0.15 mm, and the melting temperature of the adhesive layer is 50° C. to 70° C.

[0011] The seventh technical solution is based on the sixth technical solution, wherein the thermal insulation layer is a high temperature resistant TPU film, the thickness of the thermal insulation layer is 0.1 to 0.3 mm, and the melting temperature of the thermal insulation layer is 150°C to 170°C.

[0012] The eighth technical solution is based on the seventh technical solution, wherein the thickness of the first layer, the second layer and the third layer is 0.08-0.12 mm.

[0013] The ninth technical solution relates to a shoe upper, comprising an upper material and the weather-resistant metal film as described in any one of claims 1 to 8.

[0014] Compared with the prior art, the above solution has the following beneficial effects:

[0015] In the prior art, the thermal film for shoe materials includes an organic solvent-based PU layer, which is easily hydrolyzed, has poor weather resistance, poor physical properties, and a short service life.

[0016] In the first technical solution, the third layer uses PU material containing weather-resistant metal powder. The weather-resistant metal powder is weather-resistant and has excellent covering and reflective properties. Adding weather-resistant metal powder to the thermal film can also enhance the visual effect of the thermal film, which is more weather-resistant than the thermal film without adding weather-resistant metal powder.

[0017] In the first technical solution, at least two adjacent layers of the first layer, the second layer and the third layer are provided with different patterns and the third layer and / or the second layer are transparent. In terms of thickness, the thickness of the two adjacent layers is different. When the patterns are different, the patterns of different thicknesses are at different distances from the eyes, which can produce a three-dimensional effect visually. Compared with the thermal film for shoe materials with only one layer of patterns, it is beneficial to improve the three-dimensional effect of the thermal film and can help improve the aesthetics.

[0018] In the second technical solution, at least one of the first layer and the second layer is made of PU material containing weather-resistant metal powder. The more layers of PU material containing weather-resistant metal powder are used, the better the weather resistance is. Compared with using only one layer of PU material containing weather-resistant metal powder, it is more conducive to improving weather resistance.

[0019] In the third technical solution, at least one of the first layer, the second layer and the third layer is provided with a different color and the third layer and / or the second layer is transparent. On the basis of transparency, having different colors in thickness is beneficial to improving the three-dimensional sense of the thermal film, and the rich colors can further improve the aesthetics of the thermal film.

[0020] In the fourth technical solution, the weather-resistant metal powder is aluminum powder, and the aluminum powder is arranged in a scale-like manner in the PU material to form a multi-layer parallel structure, which can cover the substrate and cut off the pores of the PU material, effectively blocking the invasion of harmful substances such as external moisture and oxygen, thereby protecting the substrate from erosion. It is more weather-resistant than thermal films that only contain PU materials.

[0021] In the fifth technical solution, the PU material is a water-based polyurethane raw material. Water-based polyurethane is a new type of polyurethane system that uses water instead of organic solvent as a dispersion medium, also known as water-dispersed polyurethane, water-based polyurethane or water-based polyurethane. Water-based polyurethane uses water as a solvent. Compared with the organic solvent-based PU layer, it is more environmentally friendly and has no odor during production, which is beneficial to protecting the health of production personnel.

[0022] In the sixth technical solution, the adhesive layer is a low-temperature TPU hot-melt adhesive film, and the melting temperature of the adhesive layer is 50°C to 70°C. This melting temperature is higher than the outdoor temperature, so that it will not melt in normal and high temperature weather. It melts when heated to 50°C to 70°C, and does not require very high temperatures to melt during bonding, which is conducive to convenient processing. The thickness of the adhesive layer is 0.05 to 0.15 mm. If it exceeds this thickness, materials are wasted and the cost is high. If it is lower than this thickness, bonding is unreliable, which is conducive to saving materials when performing reliable bonding.

[0023] In the seventh technical solution, the thermal insulation layer is a high-temperature resistant TPU film, and the melting temperature of the thermal insulation layer is 150°C to 170°C. The use of high-temperature resistant TPU film is beneficial to reducing the temperature transferred from the adhesive layer to the decorative layer during processing, and the melting temperature of the thermal insulation layer is higher than the melting temperature of the adhesive layer, thereby avoiding melting of the thermal insulation layer during processing.

[0024] In the eighth technical solution, the thickness of the first layer, the second layer and the third layer is 0.08-0.12 mm. If the thickness exceeds this, the material cost is high, the drying is slow, and bubbles are easily generated; if the thickness is less than this, it is easy to break and the quality is poor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solution of the embodiment, the following briefly introduces the drawings required for use:

[0026] Figure 1 is a schematic structural diagram of the weather-resistant metal film in Example 1;

[0027] Figure 2 is a schematic diagram of the structure of the weather-resistant metal film in Example 2;

[0028] Figure 3 Schematic diagram of the structure of the weather-resistant metal film in Example 3.

[0029] Description of main reference numerals:

[0030] 1. Weather-resistant metal film; 2. Adhesive layer; 3. Heat insulation layer; 4. Decorative layer; 5. First layer; 6. Second layer; 7. Third layer; 8. Aluminum powder; 9. Texture. DETAILED DESCRIPTION

[0031] In the claims and the description, unless otherwise defined, the terms "first", "second" or "third", etc. are intended to distinguish different objects rather than to describe a specific order.

[0032] In the claims and the specification, unless otherwise defined, terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings and are only for the convenience of simplifying the description and do not imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction.

[0033] In the claims and the specification, unless otherwise defined, the term "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method in which there is no displacement relationship and relative rotation relationship between the two parties, that is to say, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0034] In the claims and the description, unless otherwise defined, the terms "includes", "has" and their variations mean "including but not limited to".

[0035] In the claims and the specification, unless otherwise defined, the term "provided with" means that the technical feature located thereafter is a part of the technical feature located therefor.

[0036] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the accompanying drawings.

[0037] Embodiment 1

[0038] Figure 1 The structure of the weather-resistant metal film 1 in this embodiment is shown in FIG. Figure 1 The weather-resistant metal film 1 includes an adhesive layer 2, a heat-insulating layer 3 and a decorative layer 4. The weather-resistant metal film 1 is attached to the upper material through the adhesive layer 2, the heat-insulating layer 3 is connected to the adhesive layer 2, and the decorative layer 4 is connected to the heat-insulating layer 3. The decorative layer 4 includes a first layer 5, a second layer 6 and a third layer 7. Figure 1, the third layer 7 and the second layer 6 in this embodiment are provided with lines 9, and have different colors and are transparent. The third layer 7 in this embodiment is made of PU material containing aluminum powder 8, and the first layer 5 and the second layer 6 are made of ordinary PU material. The aluminum powder 8 can effectively block the invasion of harmful substances such as external moisture and oxygen, thereby protecting the substrate from corrosion, so that the first layer 5 and the second layer 6 are protected by the third layer 7, and the overall weather resistance of the weather-resistant metal film 1 is enhanced. In addition, the aluminum powder 8 can give the decorative layer 4 a metallic luster, so that the aesthetics of the weather-resistant metal film 1 is improved.

[0039] In the process of making the weather-resistant metal film 1, attention should be paid to the thickness of each layer. The hot melt adhesive layer should be controlled within the range of 0.05-0.15 mm, preferably but not limited to 0.1 mm. If the thickness exceeds this range, the cost will increase and there is a possibility of glue overflow. If the thickness is lower than this range, the bonding may be unreliable and unstable. The thickness of the first layer 5, the second layer 6 and the third layer 7 of the decorative layer 4 should be controlled within the range of 0.08-0.12 mm, preferably but not limited to 0.1 mm. If the thickness exceeds this range, the cost will increase and the drying time will be extended, and bubbles are easily generated. If the thickness is lower than this range, the overall wear resistance and tensile strength of the product will be reduced, and the product quality is poor.

[0040] like Figure 1 As shown, the third layer 7 and the second layer 6 in this embodiment have different lines 9. In terms of thickness, the second layer 6 and the third layer 7 have different thicknesses. The lines 9 of different thicknesses are at different distances from the eyes, which can produce a three-dimensional effect visually. The third layer 7 and the second layer 6 in this embodiment have different colors and are transparent. Having different colors in thickness is conducive to improving the three-dimensional effect of the thermal film, and the rich colors can further improve the aesthetics of the thermal film. The lines 9 need to be printed after each layer is dried, and the color needs to add an appropriate amount of color ink to the raw material of each layer, and the base color of the raw material is transparent.

[0041] In this embodiment, the third layer 7 uses PU material containing weather-resistant metal powder. The weather-resistant metal powder is weather-resistant and has excellent covering and reflective properties. Adding weather-resistant metal powder to the thermal film can also enhance the visual effect of the thermal film, making it more weather-resistant than the thermal film without adding weather-resistant metal powder.

[0042] In the present embodiment, at least two adjacent layers of the first layer 5, the second layer 6 and the third layer 7 are provided with different patterns 9 and the third layer 7 and / or the second layer 6 are transparent. In terms of thickness, the thickness of the two adjacent layers is different. When the patterns 9 are different, the patterns 9 of different thicknesses are at different distances from the eyes, which can produce a three-dimensional effect visually. Compared with the thermal film for shoe materials with only one layer of pattern 9, it is beneficial to improve the three-dimensional effect of the thermal film and can help improve the aesthetics.

[0043] In this embodiment, at least one of the first layer 5, the second layer 6 and the third layer 7 is provided with a different color and the third layer 7 and / or the second layer 6 is transparent. On the basis of transparency, having different colors in thickness is beneficial to improving the three-dimensional sense of the thermal film, and the rich colors can further improve the aesthetics of the thermal film.

[0044] In this embodiment, the weather-resistant metal powder is aluminum powder 8, which is arranged in a scale-like manner in the PU material to form a multi-layer parallel structure, which can cover the substrate and cut off the pores of the PU material, effectively blocking the invasion of harmful substances such as external moisture and oxygen, thereby protecting the substrate from erosion. It is more weather-resistant than a thermal film that only contains PU material.

[0045] In this embodiment, the PU material is a water-based polyurethane raw material. Water-based polyurethane is a new type of polyurethane system that uses water instead of organic solvents as a dispersion medium. It is also called water-dispersible polyurethane, water-based polyurethane or water-based polyurethane. Water-based polyurethane uses water as a solvent. Compared with organic solvent-based PU layers, it is more environmentally friendly and has no odor during production, which is beneficial to protecting the health of production personnel.

[0046] In this embodiment, the adhesive layer 2 is a low-temperature TPU hot melt adhesive film, and the melting temperature of the adhesive layer 2 is 50°C to 70°C. This melting temperature is higher than the outdoor temperature, so that it will not melt in normal temperature and high temperature weather. It melts when heated to 50°C to 70°C, and does not require a very high temperature to melt during bonding, which is conducive to convenient processing. The thickness of the adhesive layer 2 is 0.05 to 0.15 mm. If it exceeds this thickness, materials are wasted and the cost is high. If it is lower than this thickness, bonding is unreliable, which is conducive to saving materials when performing reliable bonding.

[0047] In this embodiment, the thermal insulation layer 3 is a high temperature resistant TPU film, and the melting temperature of the thermal insulation layer 3 is 150°C to 170°C. The use of high temperature resistant TPU film is beneficial to reducing the temperature transferred from the adhesive layer 2 to the decorative layer 4 during processing, and the melting temperature of the thermal insulation layer 3 is higher than the melting temperature of the adhesive layer 2, thereby avoiding melting of the thermal insulation layer 3 during processing.

[0048] In this embodiment, the thickness of the first layer 5, the second layer 6 and the third layer 7 is 0.08-0.12 mm. If the thickness exceeds this, the material cost is high, the drying is slow, and bubbles are easily generated; if the thickness is less than this, it is easy to break and the quality is poor.

[0049] Embodiment 2

[0050] See also Figure 2 , Figure 2The structure of the weather-resistant metal film 1 in this embodiment is shown. The only difference between this embodiment and embodiment 1 is that the second layer 6 and the third layer 7 both use PU material containing aluminum powder 8, while the first layer 5 uses ordinary PU material. Compared with embodiment 1, the weather-resistant metal film 1 in this embodiment has greater weather resistance than that in embodiment 1.

[0051] In this embodiment, the second layer 6 and the third layer 7 both use PU material containing weather-resistant metal powder. The more layers of PU material containing weather-resistant metal powder are used, the better the weather resistance is. Compared with using only one layer of PU material containing weather-resistant metal powder, it is more conducive to improving weather resistance.

[0052] Embodiment 3

[0053] See also Figure 3 , Figure 3 The structure of the weather-resistant metal film 1 in this embodiment is shown. The only difference between this embodiment and the first embodiment is that the first layer 5, the second layer 6 and the third layer 7 are all made of PU material containing aluminum powder 8. Compared with the first embodiment, the weather-resistant metal film 1 of this embodiment has greater weather resistance than that of the first embodiment.

[0054] In this embodiment, the first layer 5, the second layer 6 and the third layer 7 are all made of PU material containing weather-resistant metal powder. The more layers of PU material containing weather-resistant metal powder are used, the better the weather resistance is. Compared with using only one layer of PU material containing weather-resistant metal powder, it is more conducive to improving weather resistance. The description of the above specification and embodiments is used to explain the scope of protection of the present application, but does not constitute a limitation on the scope of protection of the present application.

Claims

1. A weather-resistant metal film, which is attached to a shoe upper material, characterized in that: The invention comprises an adhesive layer, a heat-insulating layer and a decorative layer in sequence, wherein the adhesive layer bonds the upper material and the heat-insulating layer, the decorative layer is connected to the heat-insulating layer, the decorative layer comprises a first layer, a second layer and a third layer in sequence, the first layer is connected to the heat-insulating layer, the third layer is made of PU material containing weather-resistant metal powder, at least two adjacent layers of the first layer, the second layer and the third layer are provided with different patterns, and the third layer and / or the second layer are transparent.

2. A weather-resistant metal film as claimed in claim 1, characterized in that: At least one of the first layer and the second layer is made of PU material containing weather-resistant metal powder.

3. A weather-resistant metal film as claimed in claim 2, characterized in that: At least one of the first layer, the second layer and the third layer is provided with a different color and the third layer and / or the second layer is transparent.

4. A weather-resistant metal film as claimed in claim 3, characterized in that: The weather-resistant metal powder is aluminum powder.

5. A weather-resistant metal film as claimed in claim 4, characterized in that: The PU material is a water-based polyurethane raw material.

6. A weather-resistant metal film as claimed in claim 5, characterized in that: The adhesive layer is a low-temperature TPU hot-melt adhesive film, the thickness of the adhesive layer is 0.05-0.15 mm, and the melting temperature of the adhesive layer is 50° C.-70° C.

7. A weather-resistant metal film as claimed in claim 6, characterized in that: The heat insulation layer is a high temperature resistant TPU film, the thickness of the heat insulation layer is 0.1-0.3 mm, and the melting temperature of the heat insulation layer is 150° C.-170° C.

8. A weather-resistant metal film as claimed in claim 7, characterized in that: The thickness of the first layer, the second layer and the third layer is 0.08-0.12 mm.

9. A shoe upper, characterized in that: The invention comprises a shoe upper material and the weather-resistant metal film according to any one of claims 1 to 8.

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