TPU fabric heating skin device, heating seat and automobile

Abstract

The utility model belongs to the field of seat skins, and particularly discloses a TPU fabric heating skin device, a heating seat and an automobile. The first TPU film layer is positioned on one side of the fabric layer; the second TPU film layer is positioned on one side, far away from the fabric layer, of the first TPU film layer; the heating assembly is located between the fabric layer and the second TPU film layer, and at least one part of the heating assembly is embedded in the first TPU film layer. The two TPU film layers with different melting points are adopted, and the problems that the TPU film layers and the fabric are poor in binding strength, high in energy consumption and poor in safety performance are solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of seat skins, and particularly relates to a TPU fabric heating skin device, a heating seat and a car. BACKGROUND

[0002] It is known that TPU products have characteristics such as outstanding mechanical properties, wear resistance, excellent scratch and scratch resistance, and outstanding environmental protection performance, and are used in high-end fields (resource exploration, military, medical care, automobiles, high-end sports equipment), and high-end products (oil resistance, high temperature resistance, environmentally friendly flame retardant, functional products). In addition to being used as air-tight capsule materials, TPU fabric composite cloth can also be made into industrial transport belts, military tents, outdoor luggage, car headrests, armrests, car instrument panels, door panels, seat cushions, seats and the like.

[0003] A well-known automobile seat has a heating function, which utilizes resistance heating wires in the seat to heat the inside of the seat, and transmits heat to the occupant through heat transfer to improve the discomfort caused by excessive cooling of the seat after long-term parking in winter. The basic structure of the seat heating pad is: the lower layer is a layer of non-woven fabric, the heating wire is arranged on the non-woven fabric, the heating wire is fixed on the non-woven fabric with a fixing tape, the knitted fabric is covered on the fixing tape, and the knitted fabric is sewn into a shape similar to the heating part of the seat, and is sewn in the seat cover. Then connect to the car adapter, the car lighter socket or the USB socket power supply to supply power, when the car starts, the heating element is powered, and starts to heat. At the same time, a temperature sensor is arranged in the heating pad to monitor the change of the seat temperature, control the power-on and power-off of the heating wire, and the temperature is generally 50±5℃ off, 30±5℃ on, and the seat heating temperature is kept in the appropriate range.

[0004] The existing TPU seat heating pad directly uses acrylic ester double-sided adhesive tape in the application process, and the acrylic double-sided adhesive tape has residues on the surface of the TPU film. When the TPU film is bonded with the acrylic adhesive in the application, it shows false adhesion. With the extension of the use time, the TPU film surface tension decreases and is easy to fall off in winter.

[0005] In summary, in order to solve the above problems, the application provides a TPU fabric heating skin device with a heating function, a heating seat and a car. Practical new type content

[0006] The application is made based on the discovery and understanding of the inventor to the following facts and problems:

[0007] (1) The existing automobile seat heating device often only has an electric heating pad laid inside the automobile seat. First, the heating pad is prepared, that is, the resistance heating wire is fixed on the fabric by sewing or using adhesive tape, and then the heating pad is sewn under the seat skin. The process is complex, and the resistance heating pad and the fabric skin need to be prepared separately and then combined into one.

[0008] (2) The thick cushion affects the heat transfer. When the weather is cold, people wear thick clothes, and the heat transfer to the surface of the skin is slow and the energy consumption is high after the heating pad starts to heat. Therefore, the car needs to be preheated before driving.

[0009] (3) When the passenger moves on the seat, the electric heating pad moves back and forth, which is likely to cause the folding damage of the electric heating wire inside the electric heating pad, causing dangerous situations.

[0010] The present application aims to at least solve one of the technical problems in the related art. To this end, one object of the present application is to provide a TPU fabric heating skin device, a heating seat and a car, so as to better solve the problems of poor bonding strength of TPU film layer and fabric, high energy consumption and poor safety performance.

[0011] The first aspect of the present application provides a TPU fabric heating skin device, comprising:

[0012] a fabric layer;

[0013] a first TPU film layer located on one side of the fabric layer;

[0014] a second TPU film layer located on the side of the first TPU film layer away from the fabric layer;

[0015] a heating assembly located between the fabric layer and the second TPU film layer, and at least a part of which is embedded in the first TPU film layer.

[0016] The above-mentioned TPU fabric heating skin device of the present application will not cause the TPU film layer to fall off after long-term use, and will tightly adhere for a long time. The peel strength is high. When the passenger moves on the seat, the resistance heating wire is firmly fixed inside the skin, which avoids the folding damage of the internal resistance heating wire, improves the safety performance and service life.

[0017] In addition, the TPU fabric heating skin device according to the above-mentioned embodiments of the application can also have the following additional technical features:

[0018] In some embodiments, the melting point of the first TPU film is lower than that of the second TPU film. In some embodiments, the melting point of the first TPU film is 100°C to 120°C, and its thickness is 50μm to 100μm; in some embodiments, the melting point of the second TPU film is 190°C to 200°C, and its thickness is 0.4mm to 1mm. This is beneficial for improving the peel strength of the TPU fabric heating skin device.

[0019] In some embodiments, the first TPU film layer comprises TPU permeated in the voids of the fabric layer and TPU covering the surface of the heating component. This facilitates the encapsulation of the heating component and improves bonding strength.

[0020] In some embodiments, the heating assembly includes a resistance heating wire.

[0021] In some embodiments, the TPU fabric heating skin device further includes an insulation layer disposed on the side of the fabric layer away from the first TPU film layer. This can further improve the insulation performance of the TPU fabric heating skin device.

[0022] In some embodiments, the thickness of the fabric layer is 1 mm to 5 mm. This facilitates heat conduction of the resistance heating wire and makes the surface temperature more uniform.

[0023] In some embodiments, the TPU fabric heating surface device further includes a temperature sensor and external circuitry, with the heating component connected to both the temperature sensor and the external circuitry. This enables rapid heating and reduces costs.

[0024] The second aspect of this application discloses a heated seat, including the TPU fabric heated surface device described in the first aspect of this application. Therefore, the heated seat has better performance and a longer service life.

[0025] A third aspect of this application discloses a car including the heated seat described in the second aspect of this application. Thus, the car seat has a heating function and high safety performance. Attached Figure Description

[0026] Figure 1 This is a cross-sectional schematic diagram of the present invention.

[0027] Figure 2 This is a front view of the utility model.

[0028] Figure 3 This is a cross-sectional schematic diagram of the present invention.

[0029] Reference numerals: 1-Fabric layer; 2-First TPU film layer; 3-Second TPU film layer; 4-Heating component; 5-Insulation layer. DETAILED DESCRIPTION

[0030] Embodiments of the present application are described below in detail, examples of which are shown in the accompanying drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0031] The first aspect of the present application proposes a TPU fabric heating skin device, referring to Figure 1 The skin device comprises:

[0032] a fabric layer 1;

[0033] a first TPU film layer 2 located on one side of the fabric layer;

[0034] a second TPU film layer 3 located on the side of the first TPU film layer away from the fabric layer;

[0035] a heating assembly 4 located between the fabric layer and the second TPU film layer, and at least partially embedded in the first TPU film layer.

[0036] The TPU fabric heating skin device described above in the present application will not cause the TPU film layer to fall off after long-term use, and will be tightly attached for a long time with high peel strength. When the passenger moves on the seat, the resistance heating wire is firmly fixed inside the skin, avoiding the folding damage of the internal resistance heating wire, improving the safety performance and service life.

[0037] In addition, the TPU fabric heating skin device according to the above embodiments of the application can also have the following additional technical features:

[0038] In some embodiments, the melting point of the first TPU film layer is lower than the melting point of the second TPU film layer.

[0039] In some embodiments, the melting point temperature of the first TPU film layer is 100-120℃, for example, it can be 100℃, 105℃, 110℃, 115℃ or 120℃, etc.; the thickness is 50-100μm, for example, it can be 50μm, 60μm, 70μm, 80μm, 90μm or 100μm, etc. It can be understood that this thickness is the thickness of the first TPU film layer before being heated and melted, and after melting, part of it penetrates into the fabric layer, and the other part wraps the heating assembly.

[0040] In some embodiments, the melting point temperature of the second TPU film layer is 190-200℃, for example, it can be 190℃, 195℃ or 200℃, etc.; the thickness is 0.4-1mm, for example, it can be 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1mm, etc.

[0041] In some embodiments, the first TPU film layer comprises TPU infiltrated in the gaps of the fabric layer and TPU covering the surface of the heating component. This facilitates the wrapping of the resistance heating wire and improves the bonding strength.

[0042] In some embodiments, the heating component comprises a resistance heating wire.

[0043] In some embodiments, the TPU fabric heating skin device further comprises a thermal insulation layer, which is arranged on the side of the fabric layer away from the first TPU film layer, with reference to Figure 3 The skin device comprises: a fabric layer 1; a first TPU film layer 2 arranged on one side of the fabric layer; a second TPU film layer 3 arranged on the side of the first TPU film layer away from the fabric layer; a heating component 4 arranged between the fabric layer and the second TPU film layer, and at least partially embedded in the first TPU film layer; and a thermal insulation layer 5. This can further improve the thermal insulation performance of the TPU fabric heating skin device.

[0044] In some embodiments, the thickness of the fabric layer is 1-5 mm, for example, 1 mm, 2 mm, 3 mm, 4 mm or 5 mm, etc. This facilitates the heat conduction of the heating component and makes the skin temperature more uniform.

[0045] In some embodiments, the TPU fabric heating skin device further comprises a temperature sensor and an external circuit, and the heating component is connected with the temperature sensor and the external circuit. This TPU fabric heating skin device can realize rapid heating, has low power consumption after reaching the temperature, and the set temperature can be reduced, generally at 30±5℃ for closing and 10±5℃ for opening, thereby reducing the cost.

[0046] In some embodiments, the preparation method of the TPU fabric heating skin device comprises: extruding high-melting-point TPU melt through a die head and pulling the to-be-composite fabric through a rubber roller, and performing hot-pressing composite between the gap between the rubber roller and the composite roller, before the composite, arranging the resistance heating wire and the low-melting-point TPU film layer between the high-melting-point TPU melt and the fabric layer, melting and infiltrating the low-melting-point TPU film layer into the fabric gaps, and cooling the fabric, the resistance heating wire and the TPU film layer into an integral whole after cooling by a cooling roller.

[0047] The preparation method has at least the following beneficial effects: 1. The on-line casting and compounding method is simple in process, simplifies the process flow of heating the seat skin, and eliminates the need for a separate traditional heating pad. The structure of integrating the resistance heating wire and the skin does not affect the heat transfer, the human body directly contacts the heating skin, rapid heating can be achieved, the power consumption is low after reaching the temperature, the cost is reduced, and the use performance and the service life of the seat are improved. 2. The low-melting-point TPU resin is used, the low-melting-point TPU resin is penetrated into the fabric after melting, the problem of poor combination firmness between the TPU film layer and the fabric layer is solved, and the peeling strength and the service life are improved.

[0048] The second aspect of the application provides a heating seat, comprising the TPU fabric heating skin device of the first aspect of the application. Therefore, the heating seat has better use performance and a longer service life.

[0049] The third aspect of the application provides an automobile, comprising the heating seat of the second aspect of the application. Therefore, the seat of the automobile has a heating function and high safety performance.

[0050] The embodiments of the application are described in detail below.

[0051] Embodiment

[0052] (1) The high-melting-point TPU resin is extruded from a die after melting at 200℃, the extruded melt is located between a rubber roller and a compounding roller, the thickness is 0.5mm, and a high-melting-point TPU film layer is obtained;

[0053] (2) The rubber roller drags a fabric to be compounded, the thickness is 3mm, and the resistance heating wire is arranged on the fabric in a required shape;

[0054] (3) A layer of low-melting-point TPU film layer is spread on the resistance heating wire, the melting point temperature is 100℃, and the thickness is 80μm;

[0055] (4) The compounding roller applies pressure, at this time, the low-melting-point TPU film layer is melted and penetrated into the fabric gap, the resistance heating wire, the fabric layer and the high-melting-point TPU film layer are integrated into one body;

[0056] (5) A polyurethane heat preservation layer is prepared on the back of the fabric;

[0057] (6) The resistance heating wire is connected with a temperature sensor and an external circuit.

[0058] Comparative example

[0059] (1) The resistance heating wire is fixed on the non-woven fabric in a required shape by using a fixed adhesive tape;

[0060] (2) The knitted fabric is covered on the fixed adhesive tape, and is sewn with knitted threads to form a shape similar to the heating part of the seat;

[0061] (3) using an adhesive to bond the TPU film layer and the knitted fabric, to obtain a seat heating pad.

[0062] The interlayer peeling strength of the composite film material of the examples and the comparative examples was tested according to the method specified in HG / T 3052-2008, the interlayer peeling strength of the examples was 120.5 N / 2.5 cm, and the interlayer peeling strength of the comparative examples was 10-20 N / 2.5 cm, indicating that the TPU fabric heating skin device described in the application has high safety performance and long service life.

[0063] In the description of the present application, it should be understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0064] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present description and the features of the different embodiments or examples without contradiction.

[0065] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A TPU fabric heating skin device, characterized in that, The application relates to a TPU fabric heating skin device, comprising: a fabric layer; a first TPU film layer located on one side of the fabric layer; a second TPU film layer located on the side of the first TPU film layer away from the fabric layer; a heating component located between the fabric layer and the second TPU film layer and at least partially embedded in the first TPU film layer.

2. The TPU fabric heating skin device of claim 1, wherein, The melting point of the first TPU film layer is lower than that of the second TPU film layer.

3. The TPU fabric heating skin device of claim 1, wherein, The first TPU film layer comprises TPU embedded in the space of the fabric layer and TPU covering the surface of the heating component.

4. The TPU fabric heating skin apparatus of claim 1, wherein, The heating component comprises a resistance heating wire.

5. The TPU fabric heating skin apparatus of claim 1, wherein, A heat preservation layer is further arranged on the side of the fabric layer away from the first TPU film layer.

6. The TPU fabric heating skin apparatus of claim 1, wherein, The thickness of the fabric layer is 1-5 mm.

7. The TPU fabric heating skin apparatus of claim 1, wherein, The melting point of the first TPU film layer is 100-120 DEG C, and the thickness is 50-100 mu m.

8. The TPU fabric heating skin apparatus of claim 1, wherein, The melting point of the second TPU film layer is 190-200 DEG C, and the thickness is 0.4-1 mm.

9. The TPU fabric heating skin apparatus of claim 1, wherein, The application further relates to a temperature sensor and an external circuit, and the heating component is connected with the temperature sensor and the external circuit.

10. A heated seat, characterized by The application further relates to 11. An automobile characterized by comprising: a TPU fabric heating skin device according to any one of claims 1-9. The application further relates to a heating seat according to claim 10.

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