TWI482892B - Three-dimensional textile and electrothermal textile - Google Patents

Description

Three-dimensional fabric and electric heating fabric

The present invention relates to a three-dimensional fabric, and more particularly to an electro-thermal three-dimensional fabric.

Under the trend of globalization, the textile industry is facing strong competitive pressures. Textile companies must constantly develop new technologies and diversified products in order to face the competition in the world. In order to meet the diverse needs of consumers, there are a variety of versatile fabric products on the market, such as waterproof fabrics, thermal insulation fabrics or electric heating fabrics.

Generally, the structure of the electric heating fabric includes a layer, a heat generating layer and a heat insulating layer. The manufacturing process of the electric heating fabric mainly comprises separately weaving the surface layer, the heat generating layer and the heat insulating layer, and then combining the above-mentioned surface layer, the heat generating layer and the heat insulating layer by sewing or laminating, so that the heat generating layer is sandwiched Between the surface layer and the insulation layer.

However, in general, the electric heating fabric is manufactured in such a manner that more than one sewing or laminating process is used to laminate the three layers, and the manner of sewing or laminating makes it easy for air to exist between each layer to form an air layer. Since the thermal conductivity of air is lower than that of the general surface layer, the heat generating layer and the heat insulating layer material, the air layer reduces the heat transfer efficiency of the electric heating fabric. In addition, when the surface layer, the heat generating layer and the heat insulating layer are overlapped in a sewn manner, it is easy to cause uneven distribution of the air layer between each layer and the layer, thereby affecting the uniformity of heat transfer, so that the temperature distribution of the electric heating fabric is not All.

The present invention provides a three-dimensional fabric having a preferred warmth retention effect.

The present invention provides an electrothermal fabric which is capable of generating heat and having a warming effect and safety due to its convex structure.

An embodiment of the invention provides a three-dimensional fabric comprising a plurality of first fabric layers and at least one second fabric layer. The first fabric layer is interwoven by a plurality of non-conductive yarns into a planar structure. The second fabric layer is joined between any two first fabric layers. The second fabric layer is interwoven with at least one non-conductive yarn and at least one conductive yarn to form a raised structure relative to the planar structure. The conductive yarn is maintained at a distance from the planar structure.

An embodiment of the invention provides an electrothermal fabric comprising a three-dimensional fabric and a power supply unit. The three-dimensional fabric includes a plurality of first fabric layers, at least one second fabric layer, and two third fabric layers. The first fabric layer is interwoven by a plurality of non-conductive yarns into a planar structure. The second fabric layer is interwoven with at least one non-conductive yarn and at least one conductive yarn to form a raised structure relative to the planar structure. The conductive yarn is maintained at a distance from the planar structure. The second fabric layer is electrically connected between the third fabric layers. The power supply unit is electrically connected to the third fabric layer.

In an embodiment of the invention, the raised structure formed by the second fabric layer has an air gap relative to the planar structure.

In an embodiment of the invention, the second fabric layer is composed of a plurality of non-conductive yarns and at least one of the conductive yarns interlaced therein.

In an embodiment of the invention, the conductive yarn is interwoven between one of the non-conductive yarns of the first fabric layer and one of the non-conductive yarns of the second fabric layer.

In an embodiment of the invention, in the second fabric layer, the wire diameter of each of the non-conductive yarns is different from the wire diameter of the conductive yarn.

In an embodiment of the invention, a third fabric layer is further disposed on the partial first fabric layer and connected to the conductive yarn of the second fabric layer. The third fabric layer is formed by interlacing at least one conductive yarn.

In an embodiment of the invention, the conductive yarn of the second fabric layer is a conductive yarn of the third fabric layer.

In an embodiment of the invention, the conductive yarn of the second fabric layer and the conductive yarn of the third fabric layer are different from each other but electrically connected.

In an embodiment of the invention, the conductive yarn and the non-conductive yarn of the second fabric layer are interwoven in an axial direction. The third fabric layer is joined at opposite ends of the second fabric layer in the axial direction.

In one embodiment of the invention, the second fabric layer has a U-shaped profile and the third fabric layer includes a first portion and a second portion that are separated from one another. The first portion and the second portion are respectively connected at both ends of the U-shaped profile.

In an embodiment of the invention, the non-conductive yarns of the first fabric layer are interwoven in the same direction to form a planar structure. The non-conductive yarn of the second fabric layer and the conductive yarn are interwoven in opposite directions such that the second fabric layer forms a raised structure relative to the planar structure.

In an embodiment of the invention, the conductive yarn comprises a conductive layer and a non-conductive layer overlying the conductive layer.

In an embodiment of the invention, the conductive layer comprises conductive fibers such as stainless steel, carbon fiber, copper, nickel chromium, silver or the like.

In an embodiment of the invention, the non-conductive layer comprises silicone or polyurethane (PU).

Based on the above, in the above embodiment of the present invention, the first fabric layer of the planar structure and the second fabric layer of the convex structure are first formed on the three-dimensional fabric by different weave, and wherein the second fabric layer has the conductive yarn And it is kept at a distance from the first fabric layer. Furthermore, the second fabric layer and the third fabric layer are electrically connected to each other via the conductive yarn and then connected to the third fabric layer by the power supply unit as a power source. In this way, the three-dimensional fabric heat can be provided while the three-dimensional fabric has both the warmth effect and the safety by the convex structure.

The above described features and advantages of the present invention will be more apparent from the following description.

1 is a schematic view of an electric heating fabric in accordance with an embodiment of the present invention. Figure 2 is a partial enlarged view of the electrothermal fabric of Figure 1 in section A. Referring to FIG. 1 and FIG. 2 simultaneously, in the embodiment, the electric heating fabric 10 includes a three-dimensional fabric 100 and a power supply unit 200 electrically connected to the three-dimensional fabric 10, wherein the power supply unit 200 is used to supply power to the three-dimensional fabric. 100, in order to allow the three-dimensional fabric 100 to achieve the effect of keeping warm and cold-proof by converting electric energy into heat energy.

In the present embodiment, the three-dimensional fabric 100 includes a plurality of first fabric layers 110, a plurality of second fabric layers 120, and a third fabric layer 130. The first fabric layer 110 is a planar structure formed by interlacing a plurality of non-conductive yarns A1. Each of the second fabric layers 120 is respectively connected between the two first fabric layers 110, and the second fabric layer 120 is formed by interlacing two non-conductive yarns A1 and one conductive yarn A2, and the formation thereof is opposite to the first A raised structure of a fabric layer 110. The third fabric layer 130 is divided into a first portion 132 and a second portion 134 respectively electrically connected between the power supply unit 200 and the second fabric layer 120 to transmit the power provided by the power supply unit 200 to the second The conductive yarn A2 of the fabric layer 120, in turn, causes the conductive yarn A2 to generate heat due to the passage of electric current. The number of the non-conductive yarn A1 and the conductive yarn A2 is not limited herein, that is, in another embodiment not shown, the second fabric layer may be interwoven with a plurality of non-conductive yarns and a plurality of conductive yarns. In a further unillustrated embodiment, the conductive yarn of the second fabric layer is interwoven between a non-conductive yarn of the first fabric layer and a non-conductive yarn of the second fabric layer.

It is noted that the conductive yarn A2 of the second fabric layer 120 maintains a distance from the first fabric layer 110 in a planar configuration. Accordingly, the conductive yarn A2 for transmitting electric current and generating heat does not directly contact the skin of the human body when worn, that is, the electric heating fabric 10 can provide the safety of keeping warm and cold-proof effects.

In detail, the convex structure formed by the second fabric layer 120 has an air gap G1 with respect to the planar structure formed by the first fabric layer 110, and the conductive yarn A2 of the second fabric layer 120 is interposed between the air gaps. G1 is opposite to the first fabric layer 110. When the electric heating fabric 10 is made into a garment for wearing, the human body substantially contacts the first fabric layer 110, so that the air gap G1 formed by the convex structure on the planar structure can avoid direct contact with the human body. The conductive yarn A2 of the second fabric layer 120 further ensures the safety of the electrothermal fabric 10. Moreover, the air gap G1 can also allow the thermal energy generated by the conductive yarn A2 to be stored between the first fabric layer 110 and the second fabric layer 120, that is, the heat storage can be enhanced by the presence of the air gap G1. Within the three-dimensional fabric 100, the electrical energy wasted by the power supply unit 200 is thus also reduced.

Figure 3 is a cross-sectional view of a conductive yarn in the electrothermal fabric of Figure 2. Referring to FIG. 3, in the present embodiment, the conductive yarn A2 includes a conductive layer A2a and a non-conductive layer A2b coated on the outside of the conductive layer A2a, wherein the conductive layer A2a includes stainless steel, carbon fiber, copper, nickel chrome, silver, etc. The conductive fiber, but the conductive layer A2b, comprises tantalum or polyurethane (PU). Here, the non-conductive layer A2b has a heat storage effect and an insulating property, and since it is very thin (thickness about 100 μm), it has flexibility, so that the conductive yarn A2 is adapted to be interwoven with the non-conductive yarn A1.

Figure 4 is a top plan view of the three-dimensional fabric of Figure 2 after being flattened. Referring to FIG. 2 and FIG. 4 simultaneously, in the embodiment, in order to enable the second fabric layer 120 to form a convex structure relative to the first fabric layer 110, the second fabric layer 120 is knitted differently than the first fabric layer 120. Fabric layer 110. In this embodiment, the non-conductive yarns A1 of the first fabric layer 110 are interlaced into a planar structure in the same direction (direction F1 as shown in FIG. 2); however, the non-conductive yarns of the second fabric layer 120 are The A1 and the conductive yarn A2 are interlaced in opposite directions (directions F1 and F2 as shown in FIG. 2), so that the second fabric layer 120 can be formed with a convex structure with respect to the first fabric layer 110. However, the embodiment does not limit the manner in which the conductive yarn A2 and the non-conductive yarn A1 are interlaced, and any interlacing method of the first fabric layer 110 and the second fabric layer 120 can be applied to each other. this invention.

In addition, it is worth noting that in order to smoothly enable the second fabric layer 120 to form a convex structure with respect to the first fabric layer 110, the wire diameters of the non-conductive yarn A1 and the conductive yarn A2 of the second fabric layer 120 are mutually It is not the same, that is, as shown in FIG. 2, the conductive yarn A2 of the present embodiment is thinner than the non-conductive yarn A1, and in the process of interlacing, it is easier to form the convex structure and the air gap G1 therein. However, the embodiment does not limit the wire diameter of the conductive yarn A2 and the non-conductive yarn A1, that is, the second fabric layer 120 in which the conductive yarn A2 and the non-conductive yarn A1 which are different in diameter from each other are interlaced, Both can be applied to the present invention. In other words, in another embodiment not shown in the present invention, the wire diameter of the conductive yarn may be larger than the wire diameter of the non-conductive yarn.

Referring to FIG. 1 and FIG. 2 again, in the embodiment, the third fabric layer 130 (the first portion 132 and the second portion 134 separated by the embodiment) are interwoven by a plurality of conductive yarns A2. It can serve as an electrode of the power supply unit 200 to transfer current to the conductive yarn A2 of the second fabric layer 120. Accordingly, the conductive yarn A2 of the second fabric layer 120 needs to be electrically connected to the conductive yarn A2 of the third fabric layer 130. Therefore, the conductive yarn A2 of the second fabric layer 120 of the embodiment can be The first portion 132 and the second portion 134 of the second fabric layer 120 and the third fabric layer 130 are simultaneously woven at least one of the conductive yarns A2 of the third fabric layer 130, that is, the same conductive yarn A2. In another embodiment, not shown, the second fabric layer and the third fabric layer may be separately woven by different conductive yarns, and then electrically connected.

Referring to FIG. 1 again, in the second fabric layer 120 of the embodiment, the conductive yarn A2 and the non-conductive yarn A1 are interwoven in an axial direction C1, and the first portion 132 and the second portion of the third fabric layer 130 are The portions 134 are respectively connected at opposite ends of the second fabric layer 120 in the axial direction C1, thereby allowing the first portion 132 and the second portion 134 to supply current to the positive and negative electrodes of the second fabric layer 120 as the power supply unit 200. However, the present invention does not limit the arrangement relationship between the second fabric layer 120 and the third fabric layer 130. Figure 5 is a schematic illustration of an electrothermal fabric in accordance with another embodiment of the present invention. Referring to FIG. 5, the electric heating fabric 20 is also composed of a three-dimensional fabric 300 and a power supply unit 200. Unlike the above embodiment, the second fabric layer 320 connecting the first fabric layer 310 has a U-shaped contour. The first portion 332 and the second portion 334 of the third fabric layer 330 are respectively connected to opposite ends of the U-shaped profile.

In summary, in the above embodiment of the present invention, the three-dimensional fabric forms a first fabric layer of a planar structure and a second fabric layer of a convex structure by different weaving methods, and wherein the second fabric layer is interwoven with conductive yarns. And maintaining a distance from the first fabric layer, that is, there is an air gap between the convex structure and the planar structure. Thus, by the second fabric layer and the third fabric layer being electrically connected to each other via the conductive yarn and then the power supply unit to the third fabric layer as a power source, the three-dimensional fabric heat can be provided, and at the same time, the convex structure The conductive yarn is kept away from the skin of the human body, thus ensuring the safety of the electric heating fabric. In addition, due to the air gap of the raised structure, the heat generated by the conductive yarn is insulated and insulated, so that the cold and warmth effect of the three-dimensional fabric can be improved.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

10, 20. . . Electric heating fabric

100, 300. . . Three-dimensional fabric

110, 310. . . First fabric layer

120, 320. . . Second fabric layer

130, 330. . . Third fabric layer

132, 332. . . first part

134, 334. . . Second part

200. . . Power supply unit

A1. . . Non-conductive yarn

A2. . . Conductive yarn

A2a. . . Conductive layer

A2b. . . Non-conductive layer

C1. . . Axial

F1, F2. . . direction

G1. . . Air gap

1 is a schematic view of an electric heating fabric in accordance with an embodiment of the present invention.

Figure 2 is a partial enlarged view of the electrothermal fabric of Figure 1 in section A.

Figure 3 is a cross-sectional view of a conductive yarn in the electrothermal fabric of Figure 2.

Figure 4 is a top plan view of the three-dimensional fabric of Figure 2 after being flattened.

Figure 5 is a schematic illustration of an electrothermal fabric in accordance with another embodiment of the present invention.

10. . . Electric heating fabric

100. . . Three-dimensional fabric

110. . . First fabric layer

120. . . Second fabric layer

130. . . Third fabric layer

132. . . first part

134. . . Second part

200. . . Power supply unit

C1. . . Axial

Claims (27)

A three-dimensional fabric comprising: a plurality of first fabric layers interlaced by a plurality of non-conductive yarns into a planar structure; and at least one second fabric layer joined between any two first fabric layers, the second fabric The layer is interwoven with at least one non-conductive yarn and at least one conductive yarn to form a raised structure relative to the planar structure, wherein the conductive yarn maintains a distance from the planar structure. The three-dimensional fabric of claim 1, wherein the raised structure formed by the second fabric layer has an air gap relative to the planar structure. The three-dimensional fabric of claim 1, wherein the second fabric layer is composed of a plurality of non-conductive yarns and at least one conductive yarn interlaced therein. The three-dimensional fabric of claim 1, wherein the conductive yarn is interwoven between one of the non-conductive yarns of the first fabric layer and one of the non-conductive yarns of the second fabric layer. The three-dimensional fabric of claim 1, wherein in the second fabric layer, each of the non-conductive yarns has a wire diameter different from a wire diameter of the conductive yarn. The three-dimensional fabric of claim 1, further comprising: a third fabric layer, the conductive yarn located on the first fabric layer and connected to the second fabric layer, the third fabric layer being At least one conductive yarn is interwoven. The three-dimensional fabric of claim 6, wherein the conductive yarn of the second fabric layer is the conductive yarn of the third fabric layer. The three-dimensional fabric of claim 6, wherein the conductive yarn of the second fabric layer and the conductive yarn of the third fabric layer are different from each other but electrically connected. The three-dimensional fabric of claim 6, wherein the conductive yarn of the second fabric layer is interwoven with the non-conductive yarns in an axial direction, and the third fabric layer is connected to the third fabric layer. Two fabric layers are along opposite ends of the axial direction. The three-dimensional fabric of claim 6, wherein the second fabric layer has a U-shaped profile, and the third fabric layer comprises a first portion and a second portion separated from each other, and the first portion and the first portion The second portions are respectively connected at both ends of the U-shaped profile. The three-dimensional fabric of claim 1, wherein the non-conductive yarns of the first fabric layer are interwoven in the same direction to form the planar structure, and the non-conductive fabric layers are The conductive yarn and the conductive yarn are interwoven in opposite directions such that the second fabric layer forms the raised structure relative to the planar structure. The three-dimensional fabric of claim 1, wherein the conductive yarn comprises a conductive layer and a non-conductive layer overlying the conductive layer. The three-dimensional fabric of claim 12, wherein the conductive layer comprises conductive fibers such as stainless steel, carbon fiber, copper, nickel chrome, silver, or the like. The three-dimensional fabric of claim 12, wherein the non-conductive layer comprises silicone or polyurethane (PU). An electrothermal fabric comprising: a three-dimensional fabric comprising: a plurality of first fabric layers interlaced by a plurality of non-conductive yarns into a planar structure; at least one second fabric layer connected between any two first fabric layers The second fabric layer is interlaced with at least one non-conductive yarn and at least one conductive yarn to form a convex structure with respect to the planar structure, and the conductive yarn maintains a distance from the planar structure; a third fabric layer electrically connected between the third fabric layers; and a power supply unit electrically connected to the third fabric layers. The electrothermal fabric of claim 15, wherein the raised structure formed by the second fabric layer has an air gap relative to the planar structure. The electrothermal fabric of claim 15, wherein the second fabric layer is composed of a plurality of non-conductive yarns and at least one electrically conductive yarn interlaced therein. The electrothermal fabric of claim 15, wherein the electrically conductive yarn is interwoven between one of the non-conductive yarns of the first fabric layer and one of the non-conductive yarns of the second fabric layer. The electrothermal fabric of claim 15, wherein in the second fabric layer, each of the non-conductive yarns has a wire diameter different from a wire diameter of the conductive yarn. The electrothermal fabric of claim 15, wherein the electrically conductive yarn of the second fabric layer is the electrically conductive yarn of the third fabric layer. The electrothermal fabric of claim 15, wherein the conductive yarn of the second fabric layer and the conductive yarn of the third fabric layer are different from each other but electrically connected. The electrothermal fabric of claim 15, wherein the conductive yarn of the second fabric layer is interwoven with the non-conductive yarns in an axial direction, and the third fabric layer is connected thereto. The second fabric layer is along opposite ends of the axial direction. The electrothermal fabric of claim 15, wherein the second fabric layer has a U-shaped profile, and the third fabric layer comprises a first portion and a second portion separated from each other, and the first portion is The second portions are respectively connected at both ends of the U-shaped profile. The electrothermal fabric of claim 15, wherein the non-conductive yarns of the first fabric layer are interwoven in the same direction to form the planar structure, and the second fabric layer The non-conductive yarn and the conductive yarn are interwoven in opposite directions such that the second fabric layer forms the raised structure relative to the planar structure. The electrothermal fabric of claim 15 wherein the electrically conductive yarn comprises a conductive layer and a non-conductive layer overlying the electrically conductive layer. The electrothermal fabric of claim 25, wherein the conductive layer comprises conductive fibers such as stainless steel, carbon fiber, copper, nickel chromium, silver, or the like. The electrothermal fabric of claim 25, wherein the non-conductive layer comprises silicone or polyurethane (PU).