KR20110042421A

KR20110042421A - Pliable heating mesh capable of unifrom heating and pliable heating sheet using the same

Info

Publication number: KR20110042421A
Application number: KR1020090099086A
Authority: KR
Inventors: 김수호
Original assignee: 김수호; 주식회사 우석
Priority date: 2009-10-19
Filing date: 2009-10-19
Publication date: 2011-04-27

Abstract

PURPOSE: A pliable heating mesh implementing a uniform heating operation and a pliable heating sheet using the same are provided to improve the insulating property and the water repellent property of the sheet by pressurizing separate surface paper on the upper side and the lower side of the pliable heating sheet. CONSTITUTION: A power supplying line is composed of main power lines(12, 12') and auxiliary power lines(13, 13') arranged in parallel with the main power lines. The main power lines and the auxiliary power lines are arranged at both end parts of conductive mesh(11). The main power lines and the auxiliary power lines are in connection with a first power line(14) and a second power line(14'). A battery is in connection with the first power line and the second power line. A coating layer is formed on the conductive mesh.

Description

Flexible heating mesh capable of uniform heat generation and flexible heating sheet using same {Pliable heating mesh capable of unifrom heating and pliable heating sheet using the same}

The present invention relates to a flexible heating mesh and a heating sheet that can be used for the heating plate, quilt or wet suit, clothing and tent, etc. More specifically, the power supply to a variety of flexible heating mesh having a grid-like mesh structure As the power supply line for applying is disposed at a predetermined interval inside the end of the heat generating mesh, it is possible to prevent the voltage drop and evenly generate heat by supplying even power without a current collision.

As the field of functional polymers, the importance of electrically conductive polymers is increasing. By imparting electrical conductivity to the polymer material, it is possible to obtain the advantages of excellent physical and chemical properties and functionalities of the polymer material, as well as to obtain an inexpensive material in terms of production cost.

Applications of the electrically conductive polymer are also diversified and specialized for antistatic, self-heating, or electromagnetic wave absorption. Various conductive composite materials have been manufactured for this purpose. In the case of semi-crystalline polymer containing conductive filler, increasing the temperature increases the layer between filler particles in the polymer due to thermal expansion in the melting region of the polymer, which hinders the flow of electrons. Suddenly a high increase occurs, which is called PTC (Positive Temperature Coefficient).

In general, many polymer materials have been recognized as a good insulating material, and polymer materials play an excellent role as an electric insulator due to their low electrical conductivity. However, when fillers such as carbon black, carbon fiber, and metal powder are added, It serves as a conductor. The added fillers form an electrical pathway in the polymeric material and act as a path for the electrons. PTC is a material that acts as a conductor by inserting conductive particles into a polymer material, and is a generic term for materials used to prevent damage to products or electronic circuits caused by a certain temperature or overcurrent.

PTC devices that have typically been used have excellent thermal and electrical protection.

A fuse used for overload protection has excellent protection against overcurrent, but there is an inconvenience in that the fuse needs to be replaced when the current is cut off due to the blown fuse due to the overcurrent. Although it provides excellent temperature protection and recovery function, it is not sensitive to overcharge, making it difficult to use in precise electronic circuits. On the other hand, PTC using polymer has the advantage of excellent protection against overheating and overload protection.

The PTC material has the property of increasing electrical resistance as the temperature increases, and by imparting this property to the polymer, the disadvantages of being limited by the low electrical conductivity, high process cost, and fixed shape of the conventional ceramic PTC Security can be used to take advantage of better properties. In particular, since the minimum resistance is very small and the form is free, it is already being actively used in the design of small appliances, and it is increasing rapidly. It also has the function of automatically returning without the inconvenience of replacement when the temperature drops and the overcurrent is removed after blocking by heat or current.

After the PTC characteristic, a new conductive network is formed due to the change of the dispersed state of the conductive particles in the molten state of the polymer, and consequently, a negative temperature coefficient (NTC) phenomenon in which the resistance is greatly reduced. Since the properties imparted to the conductive polymer by the PTC effect can be lost by the NTC phenomenon, the NTC phenomenon is a major obstacle to the PTC phenomenon. NTC phenomenon is a phenomenon in which a new structure is formed by the movement of the conductive particles in the molten state, it is possible to form a network to strongly adhere the conductive particles by crosslinking to suppress the movement of the conductive particles to obtain structural stability.

The most widely used conductive particles added to impart PTC function to the polymer are carbon black and carbon fiber, and the polymer material uses a polymer having crystallinity such as PE. The polymer PTC device has a role of preventing damage to electronic products or electronic circuits, and thus is freely used in the design of small devices, but has a rigid plastic structure because it is cured by adding a crosslinking agent to suppress NTC phenomenon. Therefore, there is a problem in using it for general heating element use.

In addition, when the temperature increases, the semicrystalline polymer containing the conductive filler increases the layer between the filler particles in the polymer due to thermal expansion in the melting temperature of the polymer, thereby disturbing the flow of electrons. As the resistance increases suddenly and greatly increases, the amplitude between repetitive thermal contraction and thermal expansion continuously occurs to the crystal melting point, which shortens the life of the product.

Accordingly, a mixture of liquid silicone rubber and conductive carbon black or liquid silicone rubber is formed on the surface of a mesh structure in which fibrous or soft synthetic resins or rubber yarns are placed in a lattice form. And a flexible heating mesh made by impregnating or coating coating a conductive composition consisting of a mixture of graphite powder (Graphite powder) is a trend that is attracting great attention.

The flexible heating mesh is formed by coating a conductive composition on the surface of the mesh structure 110 as shown in FIG. 1, and both ends of the strings or blades corresponding to the horizontal or vertical direction in the mesh structure 110. As the power supply lines 120 and 120 'are connected to the power supply lines 120 and 120', the power is applied to the power supply lines 120 and 120 ', so that the conductive composition between the power supply lines is energized, and thus the conductive composition has a function as a resistor. The flexible heating mesh 100 is to have a heating property.

Such a flexible heating mesh is capable of adjusting the heating temperature according to the power of the applied power, and can be used for various purposes or uses because it is relatively easy to implement a variable size or thickness, it will have very excellent efficiency.

However, the general heating mesh as described above allows the power supply to be made only at both ends of the heating mesh. Therefore, when the grid of the mesh is large or the distance between the power supply lines is large, the conductive composition of carbon black forming the mesh is a resistor. As the supply distance increases or becomes longer, the resistance value increases to cause an instantaneous voltage drop and the amount of current decreases, causing the heat generation temperature to drop.

In addition, due to voltage drop and decreasing amount of current, the local low temperature phenomenon occurs or the heat generation itself is not available due to the technical limitations such as difficult to use as a heating element. In addition, when the local high temperature phenomenon occurs, the insulating layer is destroyed, which may cause problems of safety accidents such as electric shock or fire.

The present invention is to solve the problems described above, the power supply line for supplying power to the heating mesh is arranged in parallel between the main power line and the main power line arranged in parallel at both ends of the heating mesh and the auxiliary power supply The main power supply line and the auxiliary power supply line are alternately formed so as to supply power by alternately changing polarity, so that power is supplied evenly without a current collision through a power supply line dividedly arranged for the entire heating mesh. It is an object of the present invention to provide a flexible heating mesh to prevent and at the same time achieve a uniform and stable heating.

In addition, another object of the present invention is to provide a flexible heating sheet having a variety of shapes excellent in durability, insulation and waterproof properties by pressing and forming a separate skin paper on the upper and lower sides of the flexible heating mat as described above.

In order to achieve the above object, the present invention provides a flexible heating mesh in which power supply lines for supplying power are arranged in parallel at both ends of the conductive mesh in a lattice form, and the power supply lines are connected to both ends of the conductive mesh. It consists of a main power line arranged in parallel to each other and the auxiliary power line disposed at equal intervals between the main power line,

The main power line and the auxiliary power line alternately apply different polarities so that even current supply to the whole conductive mesh is provided, as well as current collision and voltage drop prevention.

The present invention is to maintain the even distribution of the voltage across the heating mesh, regardless of the size and shape of the heating mesh so that the heating temperature can be maintained evenly throughout, it is possible to prevent the current collision or voltage drop, The service life is extended by preventing the deviation of heat generation temperature, and the flexible heating sheet made in various forms by the skin of various materials is excellent in durability, waterproofness and insulation, so it can be reasonably used in various fields such as wet suit, mat and bedding. It is to have an effect.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor may properly define the concept of the term to describe its invention in the best possible way And should be construed in accordance with the principles and meanings and concepts consistent with the technical idea of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is an overall view of the flexible heating mesh for DC according to the present invention, Figure 3 is an overall view of the flexible heating mesh for AC according to the present invention, Figure 4 is a cross-sectional view of the flexible heating mesh according to the present invention.

Flexible heating mesh according to the present invention, as shown in the coating layer by the conductive composition on the entire surface of the core material (11a) woven in the form of weft and warp or string and blade using a fiber yarn or soft synthetic resin yarn or rubber yarn As the power is applied to the conductive mesh 11 formed by forming the 11b, the coating layer 11b made of the conductive composition generates heat to increase the overall temperature of the exothermic mesh.

That is, the core 11a woven as described above is impregnated in the conductive composition or the conductive composition is coated or coated on the surface of the core 11a to form the coating layer 11b by the conductive composition. Here, the conductive composition is made by mixing the liquid silicone rubber and the conductive carbon black. Preferably, the liquid silicone rubber and the conductive carbon black may be ideally mixed in a mass ratio of 100: 1 to 15. At this time, the conductive mesh 11 is made using a core material 11a made by weaving a fiber yarn or a synthetic resin yarn and a rubber yarn as described above, or, if necessary, the core material 11a is formed by injection molding or the like. An integrated one may be used, and one that is arranged side by side in a warp and oblique form may be manufactured by using an integrated one by gluing or fusion.

In this way, the conductive mesh 11 having the core 11a and the coating layer 11b is connected to a power line for applying power to the coating layer 11b, thereby completing the flexible heating mesh 10.

At this time, the power supply line is provided at regular intervals between the main power supply lines 12 and 12 'and the main power supply lines 12 and 12' which are arranged side by side at both ends of the conductive mesh 11, respectively. The main power line 12 (12 ') and the auxiliary power line (13) (13') and the coating layer (11b) by the conductive composition Since the electrical connection is maintained, when the power is applied to these main power lines 12, 12 'and the auxiliary power lines 13, 13', the coating layer 11b becomes energized and the coating layer 11b. ) Itself is to act as a resistor to perform the heating action by the resistance.

Particularly, the auxiliary power lines 13 and 13 'may be applied to various numbers according to the width or length of the conductive mesh 11, and the auxiliary power line may be used when the conductive mesh 11 is wide or long. The number of lines 13 and 13 'should be increased proportionally so that the spacing between power lines is not too far apart.

Therefore, the flexible heating mesh 10 can be manufactured by adding or subtracting the number of the auxiliary power lines 13 and 13 'as described above, so that the resistance of the place where the actual power is supplied even if the length of the heating mesh is long or wide. The value is kept substantially constant so that no voltage drop occurs at all and the current distribution is uniform, thereby preventing local heating or local low temperature phenomenon.

In addition, the main power lines 12, 12 'and the auxiliary power lines 13, 13' are to be alternately applied to the power of different polarity, the polarity of the adjacent power line is the same The main power line 12 (12 ') and the auxiliary power line 13 (13') are connected to the first power line so that power of different polarities can be applied between power lines adjacent to each other. The flexible heat generation from the power provided through the first power supply line 14 and the second power supply line 14 'having different polarities by alternately connecting the 14 and the second power supply line 14'. The mesh 10 is to generate a stable heat.

That is, when the battery 15 is connected to the first power line 14 and the second power line 14 ', the flexible heating mesh 10 will have a form of generating heat by direct current. Since the main power line 12 (12 ') and the auxiliary power line 13 (13') are alternately sequentially connected to the first power line 14 and the second power line 14 ', the negative electrode eventually becomes negative. As the positive and negative electrodes are sequentially arranged, the coating layer 11b between the main power lines 12 and 12 'and the auxiliary power lines 13 and 13' becomes energized and thus generates stable heat.

Accordingly, the conductive mesh 11 is uniformly applied with the current by the main power lines 12 and 12 'and the auxiliary power lines 13 and 13', which are evenly disposed with respect to the entire conductive mesh 11. Stable heat generation is achieved without deviation.

In particular, it is possible to connect a separate plug 16 to the first power line 14 and the second power line 14 'to be connected to a general household power source, in which case the main power line ( 12) By changing the distance between the 12 'and the auxiliary power line 13 and 13', the resistance value of the coating layer 11b can be changed to be used in an AC direct connection state without a separate voltage adjusting means. .

In addition, when the heating element is to be made according to a specific voltage such as DC or AC, the grid spacing of the conductive mesh 11 is adjusted according to the voltage to be used to adjust the installation interval of the auxiliary power lines 13 and 13 'installed thereon. You just need to adjust.

In other words, in order to make a low-voltage heating mesh, the voltage drop occurs at a small resistance value due to the low supply voltage, and the grid size of the mesh is made very small, and a large number of auxiliary power lines 13 and 13 'are used. Although the gap is tight and the voltage to be used is applied, the insulation (which can be formed by the liquid silicone rubber on the surface of the coating layer or can be formed by overlaying a separate coating material) is not destroyed. This is done by creating the optimal grid size and spacing between the power supply lines for the best heat generation.

On the other hand, in order to make a high-voltage heating mesh, the grid size of the conductive mesh 11 may be increased and the intervals of the auxiliary power lines 13 and 13 ′ may be increased. At this time, the grid size of the mesh should be adjusted so that the insulation between the horizontal and vertical lines between the grids of the mesh does not break due to the occurrence of corona. The spacing of the supply lines can also be made wider at the maximum distance where no voltage drop occurs.

The flexible heating mesh 10 made as described above can be utilized for various purposes and uses as a whole even heating operation, the flexible heating mesh 10 as the purpose for utilizing more conveniently and stably in a wide range of applications It is possible to manufacture a heating sheet using a flexible heating mesh (10).

That is, as the upper and lower surfaces of the flexible heating mesh 10 are attached to separate skins 20 and 20 ', the flexibility is due to the material properties of these skins 20 and 20'. The heating mesh 10 is greatly improved in durability, waterproofness or insulation.

In more detail, the flexible heating mesh 10 is placed on the first skin paper 20 as shown in FIG. 5A, and the adhesive sheet is attached to the upper surface of the flexible heating mesh 10 as shown in FIG. 5B. (21) and the second skin paper 20 'are sequentially placed.

Subsequently, when the skin paper 20, 20 'is pressed by a hot press device as shown in FIG. 5C, the adhesive sheet 21 located between these skin paper 20, 20' is heated. By the molten state is to perform the function as an adhesive for bonding the skin (20, 20 ') of the division to each other. At this time, the adhesive sheet 21 is ideal to use a vinyl paper, the above-mentioned vinyl paper has a very low melting point characteristics, it is possible to use a skin material (20, 20 ') of various materials having a melting point higher than the melting point of the vinyl paper You will have the advantage.

That is, in the case of using the nonwoven fabric or the woven paper such as the above-described skin paper 20, 20 'by the skin paper 20, 20' made of these non-woven or woven paper as well as a soft touch as well as a flexible heating mesh (10) It is to improve the durability without affecting the ductility of, and when the above-described skin (20, 20 ') is used as a waterproof fabric, such as neo-plan, the entire heating sheet including the flexible heating mesh (10) is waterproof Since it is responsible for the function is to be used as a waterproof suit or wet suit, such a waterproof suit or wet suit can generate heat by applying power to the flexible heating mesh 10 can be effectively used in deep sea work or winter or freezing warehouses, etc. There will be.

In particular, the skin 20 (20 ') as described above has a larger size than the flexible heating mesh 10, when these adhesive skin 20 (20') by pressure bonding the flexible heating mesh (10) 6 is embedded in the skin 20 (20 ') as shown in Figure 6 to prevent damage from the outside and at the same time in the case of the skin of the neo-plan material (20, 20') is a perfect insulation Since it can be made, by drawing the first power line 14 and the second power line 14 'for applying power to the flexible heating mesh 10 to the outside of the skin 20, 20' Here, the AC power source or the DC power source connected to the battery may be used.

Thus, the heating sheet made by adhering the skin 20, 20 'to the surface of the flexible heating mesh 10 is not affected by the size and shape of the heating sheet or heating blankets or heating mats, heating wet suit, It is very efficient because it can be used as various fever clothing, fever life jacket, fever tent and fever sleeping bag.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the present invention as defined by the appended claims. Examples should be understood.

1 is an overall view of a conventional flexible heating mesh

2 is an overall view of a flexible heating mesh for direct current according to the present invention

Figure 3 is an overall view of the flexible heating mesh for AC according to the present invention

Figure 4 is a cross-sectional view of the flexible heating mesh according to the present invention

5a to 5c is a manufacturing process diagram of the flexible heating sheet according to the present invention

6 is a perspective view of a flexible heating sheet according to the present invention

Explanation of symbols on the main parts of the drawings

10: flexible heating mesh 11: conductive mesh

11a: core material 11b: coating layer

12,12 ': main power cable 13,13': auxiliary power cable

14: first power line 14 ': second power line

15 battery 16 plug

20,20 ': skin 21: adhesive sheet

Claims

In the flexible heating mesh 10 in which power supply lines for supplying power to both ends of the conductive mesh in the form of lattice are arranged side by side,

The power supply line is arranged at equal intervals between the main power lines 12 and 12 'and the main power lines 12 and 12' which are arranged side by side at both ends of the conductive mesh 11, respectively. Consisting of power lines (13) and (13 '),

The main power lines 12 and 12 'and the auxiliary power lines 13 and 13' are alternately connected so that different polarities are applied in sequence so that even current is supplied to the entire conductive mesh 11 as well as current collision and voltage. Flexible exothermic mesh that allows uniform heat generation, characterized in that the drop is prevented.

The method of claim 1,

The conductive mesh 11 is formed by forming a coating layer 11b made of a conductive composition in which liquid silicon rubber and carbon black are mixed on the surface of the core material 11a woven by warp and weft. Flexible fever mesh.

The method of claim 1,

The main power line 12 (12 ') and the auxiliary power line 13 (13') are alternately sequentially connected to the first power line 14 and the second power line 14 ', but the first power line (14) and a flexible heat generating mesh to produce a uniform heat, characterized in that the battery 15 is connected to the second power line (14 ') configured to be used for direct current.

The method of claim 1,

The main power line 12 (12 ') and the auxiliary power line 13 (13') are alternately sequentially connected to the first power line 14 and the second power line 14 ', but the first power line (14) and a flexible heat generating mesh to produce a uniform heat, characterized in that configured to be used for alternating current by connecting the plug 16 to the second power line (14 ').

Auxiliary power sources arranged at equal intervals between the main power lines 12, 12 'and the main power lines 12, 12' disposed parallel to each other at both ends of the conductive mesh 11 in a grid form. Flexible heating mesh (10) consisting of lines (13) and (13 ') connected to main power lines (12) and 12' and auxiliary power lines (13) and (13 ') so that different polarities are sequentially applied in turn. ),

A flexible heat generating sheet using a flexible heat generating mesh made to generate heat evenly, characterized in that the upper and lower surfaces of the flexible heat generating mesh 10 are formed by pressing and attaching the skin paper 20, 20 ′.

The method of claim 5,

Skin paper 20, 20 'is a flexible heating sheet using a flexible heating mesh that is made uniform heat characterized by a neo-plan.

The method of claim 5,

The adhesive sheet 21 is inserted between the skin sheets 20 and 20 'so that the adhesive sheet 21 is melted at high temperature and the adhesive sheets 21 and 20' are bonded to each other. Flexible heating sheet using a flexible heating mesh to make a uniform heating.

The method of claim 7, wherein

Adhesive sheet 21 is a flexible heating sheet using a flexible heating mesh made to produce a uniform heat, characterized in that the plastic paper.

The method of claim 5,

The skin 20, 20 'is formed to have a larger size than the flexible heating mesh 10 so that the flexible heating mesh 10 is embedded in the overlapping skin 20 (20'), the flexible heating mesh The first power line 14 and the second power line 14 ', in which the main power line 12 (12') and the auxiliary power line 13, 13 'of the 10 are alternately connected in sequence, are formed of skin ( 20) (20 ') Flexible heating sheet using a flexible heating mesh that is made to be uniformly characterized in that it is configured to be drawn out to the outside.