Environment-friendly water-based hot sticking film

Abstract

The utility model discloses an environment-friendly water-based hot sticking film which comprises a TPU (thermoplastic polyurethane) base material layer and a water-based PU (polyurethane) layer coated on the TPU base material layer, and the TPU base material layer comprises a TPU high-temperature layer and a hot melt adhesive layer arranged on the lower surface of the TPU high-temperature layer. The water-based PU layer comprises a water-based PU bottom layer, a water-based PU middle layer and a water-based PU surface layer which are sequentially coated on the TPU high-temperature layer from bottom to top. The environment-friendly water-based hot sticking film disclosed by the utility model is environment-friendly, breathable, hydrolysis-resistant, difficult to fall off, good in physical properties such as wear resistance and bending resistance, and long in service life.

Description

Technical Field

[0001] The utility model relates to the field of shoe upper materials, in particular to an environmentally friendly water-based thermal film. Background Art

[0002] In the field of upper material processing, manufacturers will laminate thermal films on the surface of upper materials in order to better improve the waterproofness and durability of upper materials. TPU high and low temperature films have been widely used. They are soft and elastic. At the same time, the uppers of sports shoes made of TPU high and low temperature films have better foot feel, but the support is insufficient and there are hidden safety risks. Especially in many technical movements of basketball, the requirements for upper support, especially lateral support, are much higher than running shoes. However, since the uppers made of TPU high and low temperature films are too soft and lack support, they have poor protection for athletes' feet. At the same time, the uppers are relatively thin and have insufficient water resistance. They are easily damaged after washing. Therefore, the performance of sports shoe upper materials made of TPU high and low temperature films needs to be further improved. Utility Model Content

[0003] The utility model aims to provide an environmentally friendly water-based thermal film, which is environmentally friendly, breathable, resistant to hydrolysis, not easy to fall off, has good physical properties such as wear resistance and bending resistance, and has a long service life.

[0004] In order to achieve the above purpose, the solution of the utility model is:

[0005] An environmentally friendly water-based thermal film comprises a TPU substrate layer and a water-based PU layer coated on the TPU substrate layer, wherein the TPU substrate layer comprises a TPU high-temperature layer and a hot-melt adhesive layer arranged on the lower surface of the TPU high-temperature layer, and the water-based PU layer comprises a water-based PU bottom layer, a water-based PU middle layer and a water-based PU surface layer which are sequentially coated on the TPU high-temperature layer from bottom to top.

[0006] The thickness of the TPU high temperature layer is 0.1-0.3 mm, the thickness of the hot melt adhesive layer is 0.05-0.15 mm, and the thickness of the water-based PU layer is 0.15-0.24 mm.

[0007] The thickness of the water-based PU bottom layer is 0.05-0.08 mm, the thickness of the water-based PU middle layer is 0.05-0.08 mm, and the thickness of the water-based PU surface layer is 0.05-0.08 mm.

[0008] The TPU high temperature layer is a high temperature resistant TPU film layer.

[0009] The hot melt adhesive layer is a low-temperature TPU hot melt adhesive film layer.

[0010] The water-based PU surface layer is a water-based PU surface layer with color and texture.

[0011] The water-based PU intermediate layer is a colored water-based PU intermediate layer.

[0012] A release paper layer is also provided on the lower surface of the hot melt adhesive layer.

[0013] After adopting the above structure, the utility model provides an environmentally friendly water-based thermal film, which has the following beneficial effects: the environmentally friendly water-based thermal film includes a TPU substrate layer and a water-based PU layer coated on the TPU substrate layer, wherein the water-based PU layer includes a water-based PU bottom layer, a water-based PU middle layer and a water-based PU surface layer arranged in sequence from bottom to top, forming a water-based PU layer with a three-layer structure, the water-based PU bottom layer is better attached to the TPU high-temperature layer, the water-based PU middle layer can play a better transition role, ensure the support of the upper material, is more resistant to hydrolysis, folding, wear and scratching, and has a long service life, and the water-based PU layer is made of water-solvent polyurethane, which is non-toxic, odorless, environmentally friendly and breathable, and does not make your feet stuffy. It is a thermal film that is both functional and environmentally friendly.

[0014] Furthermore, the water-based PU surface layer is a water-based PU surface layer with color and texture, and the water-based PU middle layer is a water-based PU middle layer with color. The water-based PU surface layer can be selected in color according to needs, and mainly plays a decorative role. The raw material of the water-based PU surface layer contains water-based color paste, and the texture of the water-based PU surface layer is made by the water-based color paste. The color of the water-based PU middle layer can also be selected according to needs, and the upper and lower layers of color are formed in combination with the water-based PU surface layer, so that the surface texture of the environmentally friendly water-based thermal film has a stronger three-dimensional sense. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a structural schematic diagram of an environmentally friendly water-based thermal film.

[0016] In the figure:

[0017] TPU base layer 1 TPU high temperature layer 11

[0018] Hot melt adhesive layer 12 Water-based PU layer 2

[0019] Water-based PU bottom layer 21 Water-based PU middle layer 22

[0020] Water-based PU surface layer 23 DETAILED DESCRIPTION

[0021] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0022] An environmentally friendly water-based thermal film, such as Figure 1As shown, it includes a TPU substrate layer 1 and a water-based PU layer 2 coated on the TPU substrate layer 1, the TPU substrate layer 1 includes a TPU high-temperature layer 11 and a hot-melt adhesive layer 12 arranged on the lower surface of the TPU high-temperature layer 11, the TPU high-temperature layer 11 is a high-temperature resistant TPU film layer (melting point is 150°C to 170°C), and the hot-melt adhesive layer 12 is a low-temperature TPU hot-melt adhesive film layer (melting point is 50°C to 70°C).

[0023] The thickness of the TPU high temperature layer 11 is 0.1-0.3 mm, the thickness of the hot melt adhesive layer 12 is 0.05-0.15 mm, and the thickness of the water-based PU layer 2 is 0.15-0.24 mm. Preferably, the thickness of the TPU high temperature layer 11 is 0.2 mm, the thickness of the hot melt adhesive layer 12 is 0.1 mm, and the thickness of the water-based PU layer 2 is 0.18 mm.

[0024] The water-based PU layer 2 includes a water-based PU bottom layer 21, a water-based PU middle layer 22 and a water-based PU surface layer 23 which are sequentially coated on the TPU high-temperature layer 11 from bottom to top. The thickness of the water-based PU bottom layer 21 is 0.05-0.08 mm, the thickness of the water-based PU middle layer 22 is 0.05-0.08 mm, and the thickness of the water-based PU surface layer 23 is 0.05-0.08 mm. Preferably, the thickness of the water-based PU bottom layer 21, the water-based PU middle layer 22 and the water-based PU surface layer 23 are all 0.06 mm, so as to better ensure the support of the thermal film.

[0025] After adopting the above structure, the utility model provides an environmentally friendly water-based thermal film, which has the following beneficial effects: the environmentally friendly water-based thermal film includes a TPU substrate layer 1 and a water-based PU layer 2 coated on the TPU substrate layer 1, wherein the water-based PU layer 2 includes a water-based PU bottom layer 21, a water-based PU middle layer 22 and a water-based PU surface layer 23 arranged from bottom to top, forming a water-based PU layer 2 with a three-layer structure, the water-based PU bottom layer 23 is better attached to the TPU high-temperature layer 11, and the water-based PU middle layer 22 can play a better transition role, ensuring the support of the upper material, being more resistant to hydrolysis, folding, wear and scratching, and having a long service life, and the water-based PU layer 2 is made of water-soluble polyurethane, which is non-toxic, odorless, environmentally friendly and breathable, and does not make feet stuffy. It is a thermal film that is both functional and environmentally friendly.

[0026] Furthermore, the water-based PU surface layer 21 is a water-based PU surface layer with color and texture, and the water-based PU middle layer 22 is a water-based PU middle layer with color. The water-based PU surface layer 21 can be selected in color according to needs, and mainly plays a decorative role. The raw material of the water-based PU surface layer 21 contains water-based color paste, and the texture of the water-based PU surface layer 21 is made by the water-based color paste. The color of the water-based PU middle layer 22 can also be selected according to needs, and it cooperates with the water-based PU surface layer 21 to form two layers of color, so that the surface texture of the environmentally friendly water-based thermal film has a stronger three-dimensional sense.

[0027] Furthermore, a release paper layer is provided on the lower surface of the hot melt adhesive layer 12, which needs to be torn off when the environmentally friendly water-based thermal film is used, and then the hot melt adhesive layer 12 is adhered to the surface of the shoe material by heating, and the TPU high temperature layer 11 will not melt.

[0028] In the present invention, the TPU high temperature layer 11, the hot melt adhesive layer 12 and the water-based PU layer 2 are all made of materials known in the art.

[0029] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. An environmentally friendly water-based thermal film, comprising a TPU substrate layer and a water-based PU layer coated on the TPU substrate layer, characterized in that: The TPU substrate layer includes a TPU high-temperature layer and a hot melt adhesive layer arranged on the lower surface of the TPU high-temperature layer, and the water-based PU layer includes a water-based PU bottom layer, a water-based PU middle layer and a water-based PU surface layer sequentially coated on the TPU high-temperature layer from bottom to top.

2. The environmentally friendly water-based thermal film according to claim 1, characterized in that: The thickness of the TPU high temperature layer is 0.1-0.3 mm, the thickness of the hot melt adhesive layer is 0.05-0.15 mm, and the thickness of the water-based PU layer is 0.15-0.24 mm.

3. The environmentally friendly water-based thermal film according to claim 1, characterized in that: The thickness of the water-based PU bottom layer is 0.05 to 0.08 mm, the thickness of the water-based PU middle layer is 0.05 to 0.08 mm, and the thickness of the water-based PU surface layer is 0.05 to 0.08 mm.

4. The environmentally friendly water-based thermal film according to claim 1, characterized in that: The TPU high temperature layer is a high temperature resistant TPU film layer.

5. The environmentally friendly water-based thermal film according to claim 1, characterized in that: The hot melt adhesive layer is a low-temperature TPU hot melt adhesive film layer.

6. The environmentally friendly water-based thermal film according to claim 1, characterized in that: The water-based PU surface layer is a water-based PU surface layer with color and texture.

7. The environmentally friendly water-based thermal film according to claim 1, characterized in that: The water-based PU intermediate layer is a colored water-based PU intermediate layer.

8. The environmentally friendly water-based thermal film according to claim 1, characterized in that: A release paper layer is also provided on the lower surface of the hot melt adhesive layer.

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