A waterproof graphene woven heating composite cloth and its manufacturing method

Abstract

The present invention provides a waterproof graphene woven heating composite cloth, which comprises five layers of structures arranged in sequence from top to bottom: an upper thin film waterproof layer, an upper hot melt film layer, a heating cloth main body layer, a lower hot melt film layer and a lower thin film waterproof layer; the periphery of the waterproof graphene woven heating composite cloth has a side waterproof structure, and the side waterproof structure is composed of the peripheral parts of the upper thin film waterproof layer and the lower thin film waterproof layer and a hot melt film or a hot melt tape pasted between the peripheral parts of the upper thin film waterproof layer and the lower thin film waterproof layer. The present invention also provides a corresponding manufacturing method. The waterproof graphene woven heating composite cloth of the present invention realizes waterproofing in the up and down directions through the upper and lower thin film waterproof layers, and realizes side waterproofing through the side waterproof structure composed of the upper thin film waterproof layer, the lower thin film waterproof layer and the hot melt material pasted between the two.

Description

Technical Field

[0001] The present invention relates to a heat - generating composite fabric and a manufacturing method thereof, and particularly to a waterproof graphene - woven heat - generating composite fabric and a manufacturing method thereof. Background Art

[0002] As shown in Figure 1 is a woven heat - generating composite fabric on the market, which includes a graphene heat - generating area 101, metal conductive electrodes 102 provided on both sides of the graphene heat - generating area 101, and a surrounding sewing blank area 103 provided at the edge of the conductive electrode 102 for wrapping the side surface of the conductive electrode 102. According to long - term production practice, experimental tests, and observations, when performing a power - on waterproof test on the woven heat - generating composite fabric on the market, it is found that when the test time is short (generally about 10 minutes), there is no obvious adverse change in the heat - generating fabric. However, under the condition of a long - time power - on test, it is found that blue - green substances are generated at the positive - pole conductive electrode (the conductive electrode is generally a copper wire) of the heat - generating fabric and adhere to the surrounding of the positive - pole conductive electrode, and as time goes by, the blue - green substances will spread along the entire conductive electrode, affecting the aesthetics and service performance.

[0003] This phenomenon is the well - known copper electrolysis experiment. Then the above - mentioned test of waterproof performance is to reproduce an electrolysis of water experiment with a copper wire as the electrode. When the copper wire is immersed in water as an electrode, first, the positive pole will release Cu 2 + , and at the same time, we know that there are many impurities in ordinary water bodies. Especially at present, most sewage treatment stations in our country use chlorine for disinfection and sterilization. When Cu 2+ enters the water, it will react with free Cl ions in the water to form complex ions: CuCl3 or CuCl4 2- As the concentration of these two ions increases, the water will turn yellow. Then when the Cl ions in the water are almost consumed, Cu starts to react with water again to form blue Cu(OH) 2 precipitate. The combination of yellow and blue in colors is green, which is why what we observe is blue - green substances. In addition, a little black CuO precipitate will also be generated in this reaction of the heat - generating fabric.

[0004] However, such a chemical reaction is harmful to the woven heat - generating fabric and has no benefits. This reaction is based on the consumption of copper, so as time goes by, the positive - pole conductive copper electrode will be slowly consumed and become extremely fragile. And as the most important current carrier for the function of the entire heat - generating fabric, once it breaks, it will surely lead to a decrease in power, thus greatly reducing the heat - generating effect. At the same time, the woven heat - generating fabric based on softness requires certain anti - bending and kneading properties. Therefore, the electrodes of the heat - generating fabric are very easy to cause a series of serious problems such as breakage, arcing, and even leakage.

[0005] The reason for this phenomenon is that the waterproof ability of the woven heating composite cloth is relatively weak. From the structure of the current woven heating composite cloth (for example, the woven heating composite cloth disclosed in the patent documents corresponding to the application numbers CN201920513176.5 and CN202022556037.6), there is currently no effective waterproof measure for the woven heating composite cloth woven with metal wires to prevent the metal electrodes in the woven heating composite cloth from breaking. Summary of the Invention

[0006] The purpose of the present invention is to provide a waterproof graphene woven heating composite cloth and its manufacturing method to solve the problem of electrolysis (rusting) of the conductive electrodes of the current woven heating composite cloth in water.

[0007] To achieve the above purpose, the present invention provides a waterproof graphene woven heating composite cloth, which includes five layers of structures: an upper thin film waterproof layer, an upper hot melt film layer, a heating cloth main body layer, a lower hot melt film layer, and a lower thin film waterproof layer, which are arranged in sequence from top to bottom; the periphery of the waterproof graphene woven heating composite cloth has a side waterproof structure, and the side waterproof structure is composed of the peripheral parts of the upper thin film waterproof layer and the lower thin film waterproof layer and a hot melt film or a hot melt tape pasted between the peripheral parts of the upper thin film waterproof layer and the lower thin film waterproof layer.

[0008] The heating cloth main body layer includes the heating area of the heating cloth and conductive electrodes woven in the heating area of the heating cloth. The heating area is woven by carbon fiber and graphene, and the conductive electrodes are woven by multiple conductive wires.

[0009] The heating cloth main body layer further includes flame retardant fibers provided around the heating area and outside the width direction of the conductive electrodes.

[0010] The waterproof graphene woven heating composite cloth further includes cold pressing terminals that pierce through the five-layer structure, and the piercing feet of the cold pressing terminals are in contact with the conductive electrodes.

[0011] The hot melt film is pasted between the peripheral parts of the upper thin film waterproof layer and the lower thin film waterproof layer; the peripheries of the upper thin film waterproof layer and the lower thin film waterproof layer both exceed the periphery of the heating cloth main body layer, and at least one of the peripheries of the upper hot melt film layer and the lower hot melt film layer also exceeds the periphery of the heating cloth main body layer; the hot melt film is a peripheral part of at least one of the upper hot melt film layer and the lower hot melt film layer.

[0012] A hot melt tape is pasted between the peripheral parts of the upper thin film waterproof layer and the lower thin film waterproof layer; the main body layer of the heating cloth includes 4 such hot melt tapes arranged around the periphery of the heating area, and the peripheries of the upper thin film waterproof layer and the lower thin film waterproof layer are flush with the periphery of the main body layer of the heating cloth.

[0013] Each hot melt tape is formed by multiple hot melt wires woven into the main body layer of the heating cloth, the upper hot melt film layer above it and the lower hot melt film layer below it through a hot melt composite process.

[0014] The main body layer of the heating cloth includes the heating area of the heating cloth and conductive electrodes woven into the heating area of the heating cloth. The heating area is woven by carbon fiber and graphene, and the conductive electrodes are woven by multiple conductive wires; the hot melt tape is arranged outside the width direction of the conductive electrodes.

[0015] The main body layer of the heating cloth further includes flame-retardant yarns woven around the periphery of the heating area, outside the width direction of the conductive electrodes and inside the hot melt tapes.

[0016] The conductive electrodes have conductive wires extending along their length direction and passing through the hot melt tapes; the parts of the conductive wires exposed outside the side waterproof structure are coated with waterproof tapes.

[0017] On the other hand, the present invention also provides a method for manufacturing a waterproof graphene woven heating composite cloth, including:

[0018] S1: Prepare the upper thin film waterproof layer, the upper hot melt film layer, the main body layer of the heating cloth, the lower hot melt film layer and the lower thin film waterproof layer;

[0019] S2: Cut the upper thin film waterproof layer and the lower thin film waterproof layer so that the peripheries of the upper thin film waterproof layer and the lower thin film waterproof layer both exceed the periphery of the main body layer of the heating cloth; and cut at least one of the upper hot melt film layer and the lower hot melt film layer so that the periphery of at least one of the upper hot melt film layer and the lower hot melt film layer exceeds the periphery of the main body layer of the heating cloth;

[0020] S3: Stack the five-layer structures of the upper thin film waterproof layer, the upper hot melt film layer, the main body layer of the heating cloth, the lower hot melt film layer and the lower thin film waterproof layer together from top to bottom in sequence, and use a hot melt composite process to composite the five-layer structures together to form a graphene woven heating composite cloth with a side waterproof structure; the side waterproof structure is composed of the peripheral parts of the upper thin film waterproof layer and the lower thin film waterproof layer and the hot melt film pasted between the peripheral parts of the upper thin film waterproof layer and the lower thin film waterproof layer, and the hot melt film is the peripheral part of at least one of the upper hot melt film layer and the lower hot melt film layer.

[0021] On the other hand, the present invention also provides a method for manufacturing a waterproof graphene woven heating composite cloth, including:

[0022] S1: Prepare an upper thin film waterproof layer, an upper hot melt film layer, a heating cloth main body layer, a lower hot melt film layer, and a lower thin film waterproof layer; wherein, the heating cloth main body layer includes hot melt filaments arranged around the heating area and on the outer side in the width direction of the conductive electrode and woven into the heating cloth main body layer;

[0023] S2: Stack the five-layer structure of the upper thin film waterproof layer, the upper hot melt film layer, the heating cloth main body layer woven with hot melt filaments, the lower hot melt film layer, and the lower thin film waterproof layer together from top to bottom in sequence, and use a hot melt composite process to composite the five-layer structure together to form a graphene woven heating composite cloth with a batch side waterproof structure; at this time, the hot melt filaments and the upper hot melt film layer above and the lower hot melt film layer below them are melted into hot melt bands, and the hot melt bands are melted and bonded together with the upper thin film waterproof layer above and the lower thin film waterproof layer below to form the side waterproof structure;

[0024] S3: Cut the graphene woven heating composite cloth with a batch side waterproof structure to obtain individual waterproof graphene woven heating composite cloths, and each waterproof graphene woven heating composite cloth has the side waterproof structure at its periphery respectively.

[0025] The heating cloth main body layer includes the heating area of the heating cloth and conductive electrodes woven into the heating area of the heating cloth. The heating area is woven by carbon fiber and graphene, and the conductive electrodes are woven by multiple conductive wires; the conductive electrodes have conductive wires extending along their length direction and penetrating through the hot melt band; and the method for manufacturing the waterproof graphene woven heating composite cloth further includes step S4: covering the part of the conductive wires of the conductive electrodes exposed outside the side waterproof structure with waterproof tape.

[0026] In step S1, when preparing the heating cloth main body layer, a plurality of single-piece heating modules with the same size and arranged in an array form are made on the heating cloth main body layer. Each single-piece heating module includes a heating area of the heating cloth, a conductive electrode woven into the heating area, and hot melt filaments arranged around the heating area and on the outer side in the width direction of the conductive electrode and woven into the heating cloth main body layer. And there is a marking yarn for separating two adjacent single-piece heating modules between two adjacent single-piece heating modules; in step S3, cut the graphene woven heating composite cloth with a batch side waterproof structure according to the marking yarn.

[0027] The waterproof graphene woven heating composite cloth of the present invention realizes waterproofing in the up-and-down direction through the upper and lower thin-film waterproof layers, and realizes side waterproofing through the side waterproof structure composed of the upper thin-film waterproof layer, the lower thin-film waterproof layer, and the hot-melt material pasted between the two. Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of a woven heating composite cloth on the market.

[0029] Figure 2 It is a schematic structural diagram of the five-layer structure of the waterproof graphene woven heating composite cloth of the present invention.

[0030] Figure 3 It is a top view of the heating cloth main body layer of the waterproof graphene woven heating composite cloth according to the first embodiment of the present invention.

[0031] Figures 4A - 4B It is a cross-sectional view of the waterproof graphene woven heating composite cloth according to the first embodiment of the present invention; wherein, Figure 4A It is a cross-sectional view along the plane where the heating cloth main body layer 3 is located, Figure 4B It is a cross-sectional view along the normal line of the heating cloth main body layer 3.

[0032] Figure 5 It is a top view of the heating cloth main body layer of the waterproof graphene woven heating composite cloth according to the second embodiment of the present invention.

[0033] Figure 6 It is a schematic structural diagram of the waterproof graphene woven heating composite cloth according to the second embodiment of the present invention, which shows the structure of the waterproof graphene woven heating composite cloth at the periphery.

[0034] Figure 7 It is a schematic manufacturing principle diagram of the waterproof graphene woven heating composite cloth according to the second embodiment of the present invention, which shows the five-layer structure at the periphery before being made into the waterproof graphene woven heating composite cloth by the melt compounding process. Detailed Description of the Invention

[0035] As Figure 2 shown, the waterproof graphene woven heating composite cloth of the present invention requires at least a five-layer structure. That is, the waterproof graphene woven heating composite cloth includes an upper thin-film waterproof layer 1, an upper hot-melt film layer 2, a heating cloth main body layer 3, a lower hot-melt film layer 4, and a lower thin-film waterproof layer 5, which are arranged in sequence from top to bottom. Thus, both the upper and lower surfaces of the waterproof graphene woven heating composite cloth are composed of thin-film waterproof layers, making the upper and lower sides waterproof. Therefore, ordinary water splashing and spraying tests have basically no impact on the heating cloth.

[0036] Among them, the materials of the upper hot melt film layer 2 and the lower hot melt film layer 4 are hot melt films, which are used to be bonded to the waterproof film and the heating cloth main body layer 3 respectively through the traditional hot melt composite process during the composite process.

[0037] As Figure 3 shown, the heating cloth main body layer 3 includes a heating area 31 of the heating cloth and conductive electrodes 32 woven in the heating area 31 of the heating cloth. In addition, the heating cloth main body layer 3 further includes flame-retardant fibers 33 provided around the heating area 31 and on the outer sides in the width direction of the conductive electrodes 32. Among them, the periphery of the heating area 31 here refers to both sides in the weft direction (i.e., the left and right sides in the figure) and both sides in the radial direction (i.e., the upper and lower sides in the figure) of the heating cloth main body layer 3. The heating area 31 is woven by carbon fiber and graphene, and the conductive electrode 32 is a strip-shaped conductive electrode formed by weaving multiple conductive wires through a textile process. The conductive wires can be tinned copper wires or silver-plated copper wires. In this embodiment, the conductive electrode 32 is woven on both sides in the weft direction of the heating area 31 of the heating cloth, but this setting is only given as an example. Actually, in other embodiments, the conductive electrode 32 can be woven at any one or more positions among the upper, lower, left, right, and middle of the heating area 31 of the heating cloth.

[0038] The waterproof graphene woven heating composite cloth of the present invention further includes a cold pressing terminal with a 5-layer structure that penetrates the entire waterproof graphene woven heating composite cloth. The pins of the cold pressing terminal are in contact with the woven conductive electrodes 32, so that it can be connected to the conductive electrodes 32 of the encapsulated layer in a way that can connect an external voltage from the outside, and further connect the conductive electrodes 32 to the external voltage.

[0039] However, during the production process of the waterproof graphene woven heating composite cloth of the present invention, it needs to be cut into a specified size. If the cut heating cloth is completely immersed in water, then from the four side walls of the heating cloth, there may be gaps exposing the heating cloth main body layer 3 around the waterproof graphene woven heating composite cloth of the present invention, without any block and protection. Moisture will penetrate into the heating cloth main body layer 3 from this gap, and electrode electrolysis will occur from the penetrated heating cloth main body layer.

[0040] In the present invention, in order to effectively protect and isolate the gaps around the waterproof graphene woven heating composite cloth, the following two embodiments can be used to protect and isolate it.

[0041] The first embodiment realizes the waterproof graphene woven heating composite cloth by extending the length of the waterproof film

[0042] Please refer to again Figure 2, as described above, the waterproof graphene woven heating composite cloth includes an upper thin film waterproof layer 1, an upper hot melt film layer 2, a heating cloth main body layer 3, a lower hot melt film layer 4, and a lower thin film waterproof layer 5 which are arranged in sequence from top to bottom.

[0043] In this embodiment, please refer to Figure 3 again. The heating cloth main body layer 3 includes a heating area 31 of the heating cloth and conductive electrodes 32 woven in the heating area 31 of the heating cloth. In addition, the heating cloth main body layer 3 further includes flame retardant fibers 33 arranged around the heating area 31 and on the outer sides in the width direction of the conductive electrodes 32. Here, the periphery of the heating area 31 refers to both sides in the weft direction (i.e., the left and right sides in the figure) and both sides in the radial direction (i.e., the upper and lower sides in the figure) of the heating cloth main body layer 3. The heating area 31 is woven by carbon fiber and graphene, and the conductive electrodes 32 are strip-shaped conductive electrodes formed by weaving multiple conductive wires through a textile process. In this embodiment, the conductive electrodes 32 are woven on both sides in the weft direction of the heating area 31 of the heating cloth, but this setting is only for facilitating the distinction of the relative positions of the heating area 31, the conductive electrodes 32, and the flame retardant fibers 33. Actually, in other embodiments, the conductive electrodes 32 can be woven at any position above, below, left, right, or in the middle of the heating area 31 of the heating cloth.

[0044] As Figures 4A - 4B shown, the peripheries of the upper thin film waterproof layer 1 and the lower thin film waterproof layer 5 both exceed the periphery of the heating cloth main body layer 3 (i.e., the sizes of the upper thin film waterproof layer 1 and the lower thin film waterproof layer 5 are larger than that of the heating cloth main body layer 3), so they are both located on the outer sides in the width direction of the conductive electrodes 32 of the heating cloth main body layer 3.

[0045] In addition, the periphery of at least one of the upper hot melt film layer 2 and the lower hot melt film layer 4 can also exceed the periphery of the heating cloth main body layer 3, and the peripheral parts of the upper thin film waterproof layer 1 and the lower thin film waterproof layer 5 are bonded together through at least one of the upper hot melt film layer 2 and the lower hot melt film layer 4, so that the upper thin film waterproof layer 1, the lower thin film waterproof layer 5, and at least one of the upper hot melt film layer 2 and the lower hot melt film layer 4 jointly form a side waterproof structure, and the side of the heating cloth main body layer 3 is completely covered and sealed through the side waterproof structure.

[0046] Thus, the periphery of the waterproof graphene woven heating composite cloth of the present invention has a side waterproof structure, and the side waterproof structure is composed of the peripheral parts of the upper thin film waterproof layer 1 and the lower thin film waterproof layer 5 and the hot melt film pasted between the two. In this embodiment, the hot melt film is the peripheral part of at least one of the upper hot melt film layer 2 and the lower hot melt film layer 4.

[0047] Based on the waterproof graphene woven heating composite cloth described above, the manufacturing method of the corresponding waterproof graphene woven heating composite cloth specifically includes the following steps:

[0048] Step S1: Prepare the upper thin film waterproof layer 1, upper hot melt film layer 2, heating cloth main body layer 3, lower hot melt film layer 4 and lower thin film waterproof layer 5;

[0049] Among them, as described above, the heating cloth main body layer 3 includes the heating area 31 of the heating cloth, the conductive electrode 32 woven in the heating area 31 of the heating cloth, and the flame retardant fiber 33 provided around the heating area 31 and on the outer side of the width direction of the conductive electrode 32.

[0050] Step S2: Cut the upper thin film waterproof layer 1 and the lower thin film waterproof layer 5 so that the peripheries of the upper thin film waterproof layer 1 and the lower thin film waterproof layer 5 both exceed the periphery of the heating cloth main body layer 3; and cut at least one of the upper hot melt film layer 2 and the lower hot melt film layer 4 so that the periphery of at least one of the upper hot melt film layer 2 and the lower hot melt film layer 4 exceeds the periphery of the heating cloth main body layer 3.

[0051] Step S3: Stack the five-layer structures of the upper thin film waterproof layer 1, upper hot melt film layer 2, heating cloth main body layer 3, lower hot melt film layer 4 and lower thin film waterproof layer 5 on top of each other from top to bottom in sequence, and use the hot melt composite process to composite the five-layer structures together to form a graphene woven heating composite cloth with a side waterproof structure. At this time, the side waterproof structure is composed of the peripheral parts of the upper thin film waterproof layer 1 and the lower thin film waterproof layer 5 and the hot melt film pasted between the peripheral parts of the upper thin film waterproof layer 1 and the lower thin film waterproof layer 5, and the hot melt film is the peripheral part of at least one of the upper hot melt film layer 2 and the lower hot melt film layer 4. Specifically, the hot melt composite process can be realized by a drum-type composite device.

[0052] The hot melt composite process is an existing technology that has been mature in the country. The hot melt composite process combines various different materials with flattening properties. In this process, the hot melt film or hot melt tape is a relatively mainstream adhesive material used for materials that are not easily adhered. The temperature range of the hot melt composite process is generally between 120°C and 150°C. In the hot melt composite process, the peripheral parts of the upper thin film waterproof layer 1 and the lower thin film waterproof layer 5 and the peripheral part of at least one of the upper hot melt film layer 2 and the lower hot melt film layer 4 between the two melt and bond together to form a side waterproof structure.

[0053] The waterproof graphene woven heating composite cloth according to the first embodiment of the present invention has the simplest and most effective structure. By extending the length of the waterproof film, the waterproof film completely wraps the main body of the heating cloth, thereby achieving the side sealing of the main body layer 3 of the heating cloth. Based on the waterproof graphene woven heating composite cloth, its manufacturing method is the least efficient in actual operation. First, the sizes of the upper thin film waterproof layer 1 and the lower thin film waterproof layer 5 must be enlarged and cut according to the size of the set main body of the heating cloth, and then the five-layer structure is laminated together one by one for compounding. In view of the currently most used drum-type compounding equipment, it cannot compound individual materials in batches. Therefore, this operation mode can only be compounded manually by a small flat compounding machine one by one, and its efficiency and production capacity are greatly reduced, which is not conducive to actual production.

[0054] The waterproof graphene woven heating composite cloth of the second embodiment is achieved by adding hot melt filaments to the main body layer of the heating cloth

[0055] Please refer to Figure 2 , as described above, the waterproof graphene woven heating composite cloth includes an upper thin film waterproof layer 1, an upper hot melt film layer 2, a main body layer 3 of the heating cloth, a lower hot melt film layer 4, and a lower thin film waterproof layer 5 arranged in sequence from top to bottom.

[0056] As Figure 5 and Figure 6 shown, the main body layer 3 of the heating cloth includes a heating area 31 of the heating cloth and a conductive electrode 32 woven in the heating area 31 of the heating cloth. The heating area 31 is woven from carbon fiber and graphene, and the conductive electrode 32 is a long strip-shaped conductive electrode formed by weaving multiple conductive wires through a textile process. The main body layer 3 of the heating cloth further includes 4 hot melt tapes 34 arranged around the heating area 31 and outside the width direction of the conductive electrode 32. The hot melt tapes 34 are used to seal the periphery of the main body layer 3 of the heating cloth of a single waterproof graphene woven heating composite cloth. Here, the periphery of the main body layer 3 of the heating cloth refers to both sides in the weft direction (i.e., the left and right sides in the figure) and both sides in the radial direction (i.e., the upper and lower sides in the figure) of the main body layer 3 of the heating cloth. The hot melt tape 34 is a strip-shaped structure with a certain width, and the width of the hot melt tape 34 is about 1 cm, which can be changed accordingly according to specific requirements. The peripheries of the upper thin film waterproof layer 1 and the lower thin film waterproof layer 5 are flush with the periphery of the main body layer 3 of the heating cloth, and thus are also located outside the width direction of the conductive electrode 32 of the main body layer 3 of the heating cloth. The peripheral parts of the upper thin film waterproof layer 1 and the lower thin film waterproof layer 5 are bonded together by the hot melt tape 34, so that the upper thin film waterproof layer 1, the lower thin film waterproof layer 5 and the hot melt tape 34 jointly form a side waterproof structure, and the side of the main body layer 3 of the heating cloth is completely wrapped and sealed through the side waterproof structure.

[0057] Thus, the periphery of the waterproof graphene woven heating composite cloth of the present invention has a side waterproof structure, and the side waterproof structure is composed of the peripheral parts of the upper film waterproof layer 1 and the lower film waterproof layer 5 and the hot melt tape 34 pasted between the two.

[0058] As Figure 7 shown, in this embodiment, waterproof pretreatment preparation is carried out by adding hot melt filaments to the main body layer 3 of the heating cloth. Each hot melt tape 34 is formed by multiple hot melt filaments 341 woven in the main body layer 3 of the heating cloth, the upper hot melt film layer 2 above it and the lower hot melt film layer 4 below it through a hot melt composite process. The hot melt filament is a textile material that can melt at a specific temperature to form a fluid colloid and finally solidify, seal and fix as the temperature drops. In addition, since the hot melt tape 34 is arranged around the heating area 31 and outside the width direction of the conductive electrode 32, the corresponding hot melt filaments 341 are also arranged around the heating area 31 and outside the width direction of the conductive electrode 32. Thus, the hot melt filaments are melted through the hot melt composite process to seal the periphery of a single waterproof graphene woven heating composite cloth, thereby forming the hot melt tape 34 as a barrier to prevent moisture from infiltrating into the main body layer 3 of the heating cloth that will be permeable after cutting and causing electrode electrolysis.

[0059] In addition, the main body layer 3 of the heating cloth may further include flame-retardant yarns (not shown in the figure) woven around the heating area 31, outside the width direction of the conductive electrode 32, and inside the four hot melt tapes 34, for isolating the temperature brought by the subsequent heating area 31. The width of the flame-retardant yarn is generally 0.5 cm. Generally, the area within the innermost side of the two conductive electrodes 32 is defined as the heating area 31. However, due to the fact that the conductive electrode 32 itself will also generate a small amount of heat under the action of current and the excellent thermal conductivity of the metal usually used for the conductive electrode 32, it is also beneficial to set the flame-retardant yarn at the outermost edge of the conductive electrode 32 as an isolation area. Because there are also voids inside the flame-retardant fiber itself, which is composed of thousands of fine filaments twisted together. The fluid state when the hot melt filament melts is relatively easy to infiltrate the flame-retardant fiber, carbon fiber, and graphene fiber other than the conductive wire. Therefore, the sealing layer area formed by the hot melt tape 34 at the outer edge is very effective. And the hot melt tape 34 is still located around the heating area 31 (i.e., the outermost side of the main body layer 3 of the heating cloth of a single waterproof graphene woven heating composite cloth).

[0060] In addition, since the conductive electrode 32 is a strip-shaped conductive electrode formed by weaving multiple conductive wires through a textile process, the conductive electrode 32 has conductive wires running through the entire heating cloth main body layer 3 along its length direction. The conductive electrode 32 has conductive wires extending along its length direction and passing through the hot melt tape 34. Thus, at the position where the conductive electrode 32 passes through the hot melt tape 34, the hot melt tape 34 is formed by the conductive wires woven together with each other, the hot melt filaments 341 extending perpendicular to the length direction of the conductive electrode 32, the upper hot melt film layer 2 above the hot melt filaments 341, and the lower hot melt film layer 4 below through a hot melt composite process. However, due to the metal properties of the conductive wires, they cannot be completely infiltrated by the colloid after the hot melt filaments melt, so the sides of the conductive wires may still be exposed outside the side waterproof structure of the present invention. Therefore, the portions of the conductive wires exposed outside the side waterproof structure are coated with waterproof tapes to more effectively block the intrusion of water on all four sides, effectively protecting the internal heating area, the conductive electrode 32 and other materials, so as to meet the requirements of deep waterproofing and a certain washing function.

[0061] Based on the waterproof graphene woven heating composite cloth described above, the manufacturing method of the corresponding waterproof graphene woven heating composite cloth specifically includes the following steps:

[0062] Step S1: Prepare the upper thin film waterproof layer 1, the upper hot melt film layer 2, the heating cloth main body layer 3, the lower hot melt film layer 4, and the lower thin film waterproof layer 5; among them, as described above, the heating cloth main body layer 3 includes the heating area 31 of the heating cloth, the conductive electrode 32 woven in the heating area 31 of the heating cloth, and the hot melt filaments 341 provided around the heating area 31 and outside the width direction of the conductive electrode 32 and woven in the heating cloth main body layer 3.

[0063] In addition, the heating cloth main body layer 3 may further include flame-retardant yarns (not shown in the figure) woven around the heating area 31, outside the conductive electrode 32, and inside the four hot melt tapes 34, for isolating the temperature brought by the subsequent heating area 31.

[0064] Step S2: Stack the upper thin film waterproof layer 1, the upper hot melt film layer 2, the heating cloth main body layer 3 woven with hot melt filaments, the lower hot melt film layer 4, and the lower thin film waterproof layer 5 together in sequence from top to bottom, and use a hot melt composite process to composite the five-layer structure together to form a graphene woven heating composite cloth with a batch of side waterproof structures. Specifically, the hot melt composite process can be realized by a drum-type composite device.

[0065] In this embodiment, in step S2, the upper thin film waterproof layer 1, the upper hot melt film layer 2, the heating cloth main body layer 3 woven with hot melt filaments, the lower hot melt film layer 4, and the lower thin film waterproof layer 5 are not cut.

[0066] As Figure 6 shown, in the hot melt composite process, the set hot melt film is melted using high temperature. At the same time, the hot melt wire 341 pre-set on the main body of the heat-generating woven fabric will also melt during this process to seal the edge part of the entire waterproof graphene woven heat-generating composite fabric. At this time, when observing from the side in an enlarged view, it can be seen that under the action of the composite temperature, the hot melt wire 341 starts to melt and slowly infiltrates into the flame-retardant fibers around the main body of the heat-generating fabric, and melts and fuses together with the upper hot melt film layer 2 above it and the lower hot melt film layer 4 below it. Then, as the temperature decreases, the hot melt wire and the hot melt adhesive layer of the waterproof film are cooled and solidified to form a hot melt band 34, which automatically fills Figure 3 the notch shown, thereby blocking the intrusion of water from all four sides of the side wall. That is to say, at this time, the hot melt wire 341, the upper hot melt film layer 2 above it, and the lower hot melt film layer 4 below it are melted into a hot melt band 34, and the hot melt band 34 melts and adheres together with the upper thin film waterproof layer 1 and the lower thin film waterproof layer 5 above it to form the side waterproof structure.

[0067] Step S3: Cut the graphene woven heat-generating composite fabric with a batch of side waterproof structures to obtain individual waterproof graphene woven heat-generating composite fabrics. Among them, each waterproof graphene woven heat-generating composite fabric has a side waterproof structure at its periphery, so that the upper thin film waterproof layer 1 and the lower thin film waterproof layer 5 at the side waterproof structure are respectively at the periphery of each waterproof graphene woven heat-generating composite fabric.

[0068] Next, a brief description will be given of the arrangement method and corresponding cutting method of the batch of waterproof graphene woven heat-generating composite fabrics during actual production. In step S1, when preparing the main body layer 3 of the heat-generating fabric, a plurality of single-piece heat-generating modules with the same size and arranged in an array form are made on the main body layer 3 of the heat-generating fabric. Each single-piece heat-generating module includes a heat-generating area 31 of the heat-generating fabric, a conductive electrode 32 woven in the heat-generating area 31 of the heat-generating fabric, and a hot melt wire 341 woven around the periphery of the heat-generating area 31, woven outside the width direction of the conductive electrode 32, and woven in the main body layer 3 of the heat-generating fabric. And there is a marking yarn for separating two single-piece heat-generating modules between two adjacent single-piece heat-generating modules. Subsequently, in step S3, the graphene woven heat-generating composite fabric with a batch of side waterproof structures is cut according to the marking yarn. Thus, the hot melt bands are all woven in the surrounding area inside these marks with these marks as the standard. In this way, when cutting, both standard sizes can be cut and it can be perfectly cut in the middle of the waterproof structure composed of the hot melt bands, achieving the maximum waterproof ability.

[0069] For example, the width of the loom for the main body layer 3 of the heating cloth is generally about 1 to 2 meters (weft direction). Assuming the width is 1 meter, in this 1-meter width, if the customer's design requirement is a single-piece heating module that is only 5 cm wide and 10 cm long, then in this 1-meter width, ideally, 20 modules with a width of 5 cm can be made. After measuring the dimensions between these 20 uncut initial cloths, we generally change the color of a yarn in the middle part between two adjacent areas to a more prominent color to distinguish the module size and the subsequent cutting areas. Similarly, for the weft direction, according to the process data I designed, after the machine recognizes it, it will replace the weft yarn at a distance of about 10 cm to achieve module distinction for convenient subsequent cutting and processing.

[0070] According to the waterproof graphene woven heating composite cloth of the second embodiment of the present invention, the manufacturing method corresponding to the waterproof graphene woven heating composite cloth is efficient and has remarkable effects. It does not require composite treatment one by one and can be batch-composite processed in rolls. During the subsequent cutting and processing, there is no need to worry about water ingress causing electrolysis of the electrodes due to the situation that the side walls of the middle layer of the heating cloth main body are not protected or isolated during cutting.

[0071] In addition, since the conductive electrode 32 has a conductive wire extending along its length direction and passing through the hot melt tape 34, and at the position where the conductive electrode 32 passes through the hot melt tape 34, the hot melt tape 34 is formed by the conductive wire woven together with each other and a hot melt wire 341 extending perpendicular to the length direction of the conductive electrode 32 through a hot melt composite process. However, due to the metal properties of the conductive wire, it cannot be completely infiltrated by the colloid after the hot melt wire melts. Therefore, the side of the conductive wire may still be exposed outside the side waterproof structure of the present invention. Therefore, step S4 can also be included:

[0072] Cover the part of the conductive wire of the conductive electrode 32 exposed outside the side waterproof structure with waterproof tape to more effectively block the ingress of water from the four sides, effectively protect the internal heating area and materials such as the conductive electrode 32, so as to meet the requirements of deep waterproofing and a certain washing function.

[0073] The above is only the preferred embodiment of the present invention and is not used to limit the scope of the present invention. Various changes can be made to the above embodiments of the present invention. For example, the restrictive terms in terms of position, direction, size, length, etc. described above are for convenient expression and can be flexibly changed during actual use. That is, all simple, equivalent changes and modifications made according to the claims and the content of the specification of the present invention application fall within the scope of the claims of the present invention patent. The content not described in detail in the present invention is all conventional technical content.

Claims

1. A manufacturing method of a waterproof graphene woven heating composite cloth, characterized in that, comprising: Step S1: Prepare an upper thin film waterproof layer, an upper hot melt film layer, a heating cloth main body layer, a lower hot melt film layer and a lower thin film waterproof layer; wherein, the heating cloth main body layer includes hot melt filaments arranged around the heating area and outside the width direction of the conductive electrode and woven into the heating cloth main body layer; Step S2: Stack the five-layer structures of the upper thin film waterproof layer, the upper hot melt film layer, the heating cloth main body layer woven with hot melt filaments, the lower hot melt film layer and the lower thin film waterproof layer together from top to bottom in sequence, and use a hot melt composite process to composite the five-layer structures together to form a graphene woven heating composite cloth with a batch of side waterproof structures; at this time, the hot melt filaments and the upper hot melt film layer above and the lower hot melt film layer below them are melted into hot melt bands, and the hot melt bands are melted and bonded with the upper thin film waterproof layer above and the lower thin film waterproof layer below them to form the side waterproof structure; Step S3: Cut the graphene woven heating composite cloth with a batch of side waterproof structures to obtain individual waterproof graphene woven heating composite cloths, and each waterproof graphene woven heating composite cloth has the side waterproof structure at its periphery respectively, the heating cloth main body layer includes the heating area of the heating cloth and conductive electrodes woven into the heating area of the heating cloth, the heating area is woven by carbon fiber and graphene, and the conductive electrodes are woven by multiple conductive wires; the conductive electrodes have conductive wires extending along their length direction and penetrating through the hot melt bands; and the manufacturing method of the waterproof graphene woven heating composite cloth further includes Step S4: Cover the part of the conductive wires of the conductive electrodes exposed outside the side waterproof structure with waterproof tape, In Step S1, when preparing the heating cloth main body layer, make a plurality of single-piece heating modules with the same size and arranged in an array form on the heating cloth main body layer. Each single-piece heating module includes a heating area of a heating cloth, a conductive electrode woven into the heating area, and hot melt filaments arranged around the heating area and outside the width direction of the conductive electrode and woven into the heating cloth main body layer. And there is a marking yarn for separating two single-piece heating modules between two adjacent single-piece heating modules; In Step S3, cut the graphene woven heating composite cloth with a batch of side waterproof structures according to the marking yarn.

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