WO2009151238A2

WO2009151238A2 - Method for manufacturing heating sheet

Info

Publication number: WO2009151238A2
Application number: PCT/KR2009/003049
Authority: WO
Inventors: 박동수
Original assignee: 주식회사 유니웜
Priority date: 2008-06-09
Filing date: 2009-06-08
Publication date: 2009-12-17
Also published as: CN102056515A; WO2009151238A3; CN102056515B; KR100883380B1

Abstract

The present invention relates to a method for manufacturing a heating sheet. More specifically, the present invention relates to a method for manufacturing a heating sheet which can prevent penetration of moisture inside the heater and enables comfortable use of the heater, wherein the heating sheet is manufactured by laminating a foam cloth, a warm layer, a reflective layer, a damp-proof layer, and a finishing layer in order on the upper/lower parts of a heater which is heated to a certain temperature by power supplied from the outside. The method for manufacturing the heating sheet according to the present invention comprises: a heater production step for manufacturing the heater, a foam cloth preparation step for preparing the foam cloth, a foam cloth lamination step for laminating the foam cloth on upper/lower parts of the heater, a first lamination step for laminating the warm layer on the upper part of the foam cloth and the reflective layer on the lower part of the foam cloth, and a second lamination step for laminating the finishing layer on the upper part of the warm layer and the damp-proof layer on the lower part of the reflective layer. The foam cloth preparation step includes: a solid dissolution step for injecting a solid in a heating tank and dissolving the solid at 500℃ for 5 ~ 10 seconds, a foam liquid mixture preparation step for mixing the dissolved solid with a foaming agent in the mixing tank, a foam liquid mixture application step for applying the mixed foam liquid mixture to a foam line, a foam cloth preparation step for producing the foam cloth by creating foam through heating the foam liquid mixture applied to the foam line at 60℃ ~ 120℃ for 5 ~ 10 seconds, and a foam cloth cutting step for cutting the foamed cloth at a certain thickness.

Description

[Correction 25.06.2009 by Rule 26]

The present invention relates to a method for manufacturing a heating sheet, and more particularly, a conductive composition formed by mixing liquid silicone rubber and conductive carbon black so as to generate heat at a predetermined temperature by supplying power from the outside, and then manufactured through a molding and curing step in a mold. A foam sheet, a heat insulating layer, a reflective layer, a moisture proof layer, and a finishing layer are sequentially laminated on the upper and lower parts of the heating element to produce a heating sheet. In particular, the foaming material laminated on the upper and lower parts of the heating element prevents penetration of moisture into the heating element. And it relates to a heat generating sheet manufacturing method for producing a heat generating sheet capable of using a heat generating sheet excellent in insulation effect comfortably and safely.

In general, the heating sheet has been produced in a variety of medical mats, household mats for the purpose of being used as a medical mat used for the treatment of the affected area, to prevent excessive heating costs in winter, and used as a household mat used directly in real life.

The conventional heating sheet is composed of a planar heating element made of a conductive wire composed mostly of carbon and copper wire or a finishing layer laminated on the upper and lower portions of a heating element woven with copper and carbon wire to produce a heating sheet, and then powers the heating element from the outside. By applying the heating element has been variously used as a medical mat, a household mat according to the purpose of using the heating sheet is heated to a predetermined temperature and the predetermined temperature is heated.

The heating sheet manufactured by the conventional manufacturing method as described above, moisture is penetrated into the interior of the finishing paper, the heating element is short-circuited by the moisture is generated there is a problem that a fire and a safety accident occurs during use to solve this problem.

In addition, due to long-term use of the heating sheet and excessive deformation of the heating element, a portion of the heating element is cut off, and an electric short circuit occurs, so that power is not smoothly supplied into the heating element when electricity is applied. There is a problem that a safety accident occurs.

In order to solve the above problems, the present invention provides a conductive composition comprising a mixture of liquid silicone rubber and conductive carbon black so as to generate heat at a predetermined temperature through an externally supplied power source. It is manufactured by laminating the foam fabric, insulation layer, reflective layer, moisture proof layer, and finishing layer in the upper and lower portions in order to prevent the penetration of moisture into the heating element, thereby preventing leakage of the heating element due to moisture. The foam fabric laminated to the upper and lower parts is to provide a heating sheet manufacturing method for manufacturing a heating sheet which can prevent the penetration of moisture into the heating element and excellent in insulation effect and can use the heating sheet comfortably and safely.

The heating sheet manufacturing method according to the present invention, a heating element manufacturing step of producing a heating element for dissipating heat; Foaming fabric manufacturing step of producing a foaming fabric; Foaming fabric laminating step of laminating the foaming fabric on the upper / lower portion of the heating element; A first laminating step of laminating a thermal insulation layer and a reflective layer on a lower portion of the foam fabric; And a second laminating step of laminating a finishing layer on the heat insulating layer and laminating a moisture proof layer on the bottom of the reflective layer.

The foam fabrication step, the solid dissolving step of dissolving the solid agent in a heating tank for 5 to 10 seconds at 500 ℃; A step of preparing a mixed foam solution in which the dissolved solid agent is mixed with a blowing agent in a mixing tank; A foam mixture applying step of applying the mixed foam mixture to the foam line; A foaming fabrication step of producing a foaming fabric by foaming the foamed mixture by heating the foamed mixture applied to the foaming line at 60 ° C. to 120 ° C. for 5 to 10 seconds; And a foaming fabric cutting step of cutting the foamed foaming fabric to a predetermined thickness.

In addition, the heating element manufacturing step, the conductive composition manufacturing step of producing a conductive composition by mixing the liquid silicone rubber and conductive carbon black; Stirring the diluent to the conductive composition; A curing step of molding and curing the conductive composition stirred in a predetermined mold; Characterized in that comprises a.

In addition, the solid body is characterized by consisting of any one of polyethylene (PE: Polyethylene), polyurethane (PU: Polyurethane), polyvinyl chloride (PVC: PolyvinyChloride), polypropylene (PP: Polypropylene).

In addition, in the foaming fabric step, the foaming material is laminated on the upper and lower parts of the heating element, and the inner surface of the foaming material is heated by a flame of 100 ° C. to 150 ° C. by a heating means, and moved to a compression roller to pressurize 1TON. It is characterized in that the foamed material and the heating element is compressed and laminated for 3 to 5 seconds.

In addition, the first lamination method, the lamination of the insulating layer on the foamed fabric upper and the reflective layer on the lower foamed fabric and then heat-sealed at 1 ton pressure for 3 to 5 seconds at 200 ℃ ~ 250 ℃ in a heat extrusion roller It features.

In addition, the second lamination method is characterized in that the heat-sealed at 1 ton pressure for 3 to 5 seconds at 200 ℃ ~ 250 ℃ in a heat extrusion roller after laminating a finishing layer on the insulating layer and a moisture resistant layer on the lower reflective layer. It is done.

In addition, the insulating layer and the moisture-proof layer, characterized in that made of any one of polyethylene terephthalate (PET: polyethylen terephthalate, polyethylene (PE: Polyethylene), polypropylene (PP: Polypropylene).

In addition, the reflective layer is characterized by consisting of any one of polyethylene terephthalate (PET: polyethylen terephthalate, polyethylene (PE: Polyethylene), polypropylene (PP: Polypropylene).

In addition, the finishing layer is made of polyethylene terephthalate (PET: polyethylen terephthalate, polyethylene (PE: Polyethylene), polypropylene (PP: Polypropylene) made of any one of the monolayer on the upper layer of the thermal insulation layer, reinforced floor, It characterized in that the auxiliary finishing layer made of any one of the tecotile laminated.

According to the present invention, since the silicone rubber and the conductive carbon black is mixed to produce a heating element with the conductive composition, the infiltration of moisture into the heating element is blocked at the source, thereby preventing the safety accident caused by the leakage.

In addition, the foamed fabric laminated on the upper and lower parts of the heating element prevents the penetration of moisture into the heating element and has excellent insulation effect so that the heating sheet can be used comfortably and safely. In particular, the heating element made of the mesh structure has a short circuit inside the heating element. Even if the power is bypassed, the power supply is smoothly supplied to the heating element, thereby reducing the cost of replacing the heating sheet, and producing the mass of the heating sheet.

1 is a perspective view of a heating element according to the present invention;

2 is a view showing a manufacturing method for producing a foamed mixture according to the present invention,

Figure 3 is a view showing a manufacturing method for producing a foam fabric according to the present invention,

4 is a view showing a state of laminating the foam fabric and the heating element according to the present invention,

5 is a view showing a method for manufacturing a heating sheet according to the present invention;

6 is a view showing a heating sheet according to the present invention,

7 is a flow chart showing a manufacturing method for producing a heating sheet according to the present invention,

8 is a flow chart showing a manufacturing method for manufacturing a heating element according to the present invention,

9 is a flow chart showing a method of manufacturing a foam fabric according to the present invention.

Hereinafter, a method of manufacturing a heating sheet according to the present invention will be described with reference to the accompanying drawings.

1 is a perspective view showing a heating element according to the present invention, Figure 2 is a view showing a manufacturing method for producing a foamed mixture according to the present invention, Figure 3 is a view showing a manufacturing method for manufacturing a foam fabric according to the present invention. 4 is a view showing a state of laminating the foam fabric and the heating element according to the present invention, Figure 5 is a view showing a method for producing a heating sheet according to the present invention, Figure 6 is a view showing a heating sheet according to the present invention 7 is a flowchart showing a manufacturing method for manufacturing a heating sheet according to the present invention, FIG. 8 is a flowchart showing a manufacturing method for manufacturing a heating element according to the present invention, and FIG. 9 shows a method for manufacturing a foam fabric according to the present invention. Is a flow chart showing.

1 to 9, the method for manufacturing a heating sheet of the present invention,

1) a heating element manufacturing step of producing a heating element 100 for dissipating heat; (S100)

2) foam fabric manufacturing step of manufacturing the foam fabric 200; (S200)

3) foaming fabric laminating step of laminating the foaming fabric 200 on the upper / lower portion of the heating element 100; (S300)

4) a first laminating step of laminating the insulating layer 300 and the reflective layer 400 on the foaming fabric 200 above; (S500) and

5) a second lamination step of laminating the finishing layer 600 on the heat insulating layer 300, and laminating the moisture barrier layer 500 under the reflective layer 400; (S600)

It is made of, and each manufacturing method will be described in detail as follows.

<1. Heating element manufacturing>

The heating element 100 is supplied with power supplied from the outside to dissipate heat at a predetermined temperature, the heating element manufacturing step (S100) for producing the heating element 100, by mixing the liquid silicone rubber and conductive carbon black conductive A conductive composition manufacturing step (S100 ') for preparing a composition, and a stirring step (S200') for stirring a diluent to a conductive composition prepared by mixing a liquid silicone rubber and conductive carbon black.

In addition, the heating composition 100 is manufactured through a curing step (S300 ') of forming and curing the conductive composition in a predetermined molding mold of the conductive composition that has undergone the stirring step (S200').

In particular, the heating element 100, through the forming and curing step of the conductive composition formed by mixing the liquid silicone rubber and the conductive carbon black in a mold (not shown), the heating element 100 is configured in a mesh structure.

The composition production step (S100 ') is a conductive composition consisting of a mixture of liquid silicone rubber and conductive carbon black or a mixture of liquid silicone rubber and graphite powder, the mixing ratio of each composition is a liquid silicone rubber and conductive carbon black The mass ratio of 100: 1 ~ 15, the mass ratio of the liquid silicone rubber and graphite powder is made of 100: 10 ~ 150 and the composition thus prepared is mixed to produce a conductive composition, and then to the mixture of liquid silicone rubber and conductive carbon black The diluent is added in a proportion of 1 to 100% by weight of the liquid silicone rubber, followed by a stirring step (S200 ') of stirring.

At this time, the diluent is toluene or xylene (xylene) is used, the diluent added to the mixture through the stirring step (S200 ') as described above 0 to 100% based on the mass ratio of the liquid silicone rubber In the stirring step (S200 '), when the content of carbon black is low, the fluidity of the conductive composition is ensured without adding a diluent, but the higher the content of the carbon black, the fluidity is lowered, thereby adding a diluent. When stirring, the fluidity of the conductive composition is improved.

In addition, the conductive composition that has undergone the stirring step (S200 ') is subjected to a curing step (S300'). At this time, the conductive composition is molded in various forms in a mold (not shown) for a predetermined period of time for the heating element 100. It will be manufactured, the heating element 100 is supplied with power from the outside to be heated to a predetermined temperature inside.

The heating element 100 manufactured by the above-described manufacturing method is excellent in physicochemical properties such as heat resistance, cold resistance, earth resistance, and electrical insulation, and the mixture is stirred by mixing only liquid silicone rubber and a diluent, which are the same materials as the conductive composition. Even if there is a repeated change in thermal expansion and thermal contraction by coating and insulating the surface of the heating element 100, the peeling phenomenon of the heating element 100 does not occur, and a mixture of silicone rubber and a diluent is coated and moisture is generated in the heating element ( 100) it does not penetrate into the interior it is possible to prevent a short circuit due to moisture in advance, in particular, the heating element 100 is formed in a mesh structure manufactured even if a portion of the heating element 100 is short circuited the power is bypassed the heating element Power to 100 is smoothly supplied.

<2. Foam Fabric Manufacturing>

The foam fabric 200 is laminated on the upper / lower portion of the heating element 100 to block the moisture in the interior of the heating element 100, excellent heat transfer effect can be easily transferred to the heat emitted from the heating element 100 to the outside As can be, the manufacturing method of the foam fabric 200 is as follows.

The foamed fabric 200 is to foam the foamed mixture 240 to produce the foamed fabric 200, and in order to manufacture the foamed fabric 200, the foamed mixture 240 must be prepared first.

①. Solid agent dissolution step of dissolving the solid agent 210 in the heating tank 220 for 5 to 10 seconds at 500 ℃; (S100 ")

②. Foaming solution manufacturing step of mixing the dissolved solid agent 210 with the blowing agent in the mixing tank 230; (S200 ")

③. Foam mixed solution coating step of applying the mixed foam mixture 240 to the foam line 250; (S300 ")

④. Foaming fabric production step of producing a foaming fabric 200 by foaming the foamed mixture (240) by heating the foamed mixture (240) applied to the foaming line 250 at 60 ℃ ~ 120 ℃ for 5 to 10 seconds; (S400 " )

⑤. Foamed fabric cutting step of cutting the foamed foam fabric 200 to a predetermined thickness: (S500 "), the solid body 210 is dissolved in the heating tank 220 to be mixed with the blowing agent, polyethylene ( PE: Polyethylene), Polyurethane (PU: Polyurethane), polyvinyl chloride (PVC: PolyvinyChloride), made of any one of polypropylene (PP: Polypropylene), dissolved in the heating tank 220 is mixed in the mixing tank 230 It is mixed with the blowing agent to be composed of a foam mixture (240).

In addition, the foamed mixed solution 240 in which the dissolved solid agent 210 and the blowing agent are mixed is applied to the foaming line 250 in a liquid state, and the foaming line 250 is formed by a conveyor belt method. The foamed mixture 240 foamed at 230 is applied evenly in the foam line 250.

In addition, in order to promote the foaming of the foamed mixture 240 applied to the foaming line 250, the foamed mixture 240 is heated at a temperature of 60 ° C. to 120 ° C. for 5 to 10 seconds to form a foamed mixture 240. Promotes foaming

At this time, when the foam mixture 240 is heated at a constant temperature for a predetermined time, the foam mixture 240 is usually foamed for 1 m or more, and cooled slowly in the outside air to produce the foam fabric 200.

In particular, the foamed foam fabric 200 is cut to a predetermined thickness so as to be laminated to the upper / lower portion of the heating element 100, the foaming fabric 200 is to be easily laminated to the upper / lower portion of the heating element 100. It is preferable to cut to 1 ~ 2mm, and the manufacturing method for manufacturing the heating sheet through the heating element 100 and the foaming fabric 200 manufactured by the above-described manufacturing method as follows.

<3. Foamed fabric lamination>

The foaming fabric 200 is laminated to the upper / lower portion of the heating element 100 to block moisture penetrating into the heating element 100 and to increase the heat transfer effect of the heating element 100, wherein the foam The method of laminating the fabric 200 is to heat the inner surface of the foam fabric 200, cut into 1 ~ 2mm with a flame of 100 ℃ ~ 150 ℃ through the heating means 260 and the upper / lower portion of the heating element 100 To be laminated to the compression roller 270 to compress the laminated foaming material 200 and the heating element 100 for 3 to 5 seconds at a pressure of 1TON.

At this time, the foam fabric 200 heated by the heating means 260 is heated and at the same time the inner surface of the foam fabric 200 is dissolved so that the upper and lower foam fabric 200 is mutually bonded together with the heating element 100. This, and passes through the compression roller 270, the foam fabric 200 and the heating element 100 is firmly compressed.

<4. First Lamination Stage>

Upper and lower portions of the foamed fabric 200 in which the foamed fabric 200 and the heating element 100 are laminated are respectively laminated with a heat insulating layer 300 and a reflective layer 400 on the foamed fabric 200. The thermal insulation layer 300 minimizes the heat dissipation of the heating element 100 to the outside to keep the heat constant within the heating sheet, and the reflective layer 400 reflects the heat transferred to the bottom to minimize heat loss. By lowering the power consumption, even if the power supply is interrupted to the heating element 100, the heating temperature of the heating sheet can be maintained for a long time.

In addition, the insulating layer 300 and the reflective layer 400 is made of any one of polyethylene terephthalate (PET: polyethylen terephthalate, polyethylene (PE: Polyethylene), polypropylene (PP: Polypropylene), the insulating layer 300 and The thickness of the reflective layer 400 is preferably maintained to 0.2 mm ~ 0.5mm.

In addition, in the first lamination method S500 of laminating the insulating layer 300 and the reflective layer 400, the insulating layer 300 is laminated on the foamed fabric 200 and the reflective layer is disposed below the foamed fabric 200. After laminating (400), the heat-extrusion roller 700 is thermally fused at a pressure of 1 ton for 3 to 5 seconds at 200 ° C. to 250 ° C., at this time, the foam fabric 200, the insulating layer 300, and the reflective layer 400. ) Are mutually dissolved and bonded to each other by the heating temperature of the heat extrusion roller 700, and at the same time by the extrusion pressure of the heat extrusion roller 700, the foaming fabric 200, the insulating layer 300 and the reflective layer 400 This will be firmly combined with each other.

<5. Second lamination stage>

Polyethylene terephthalate (PET: Polyethylen terephthalate, polyethylene (PE: Polyethylene), polypropylene (PP: Polypropylene) made of any one of the finishing layer 600 and the moisture proof layer 500, respectively, the finishing layer (top) 600) and the moisture-proof layer 500 is laminated on the bottom of the reflective layer 400, and then heat-sealed at 1 ton pressure for 3 to 5 seconds at 200 ° C to 250 ° C in the heat extrusion roller 700.

At this time, the heat insulating layer 300 and the finishing layer 600, the reflective layer 400 and the moisture proof layer 500 are mutually dissolved and bonded to each other by the heating temperature of the heat extrusion roller 700, at the same time heat extrusion roller The extrusion pressure of 700 causes the two to firmly stack together.

In addition, the moisture barrier layer 500 and the finish layer 600 is preferably maintained in a thickness of 0.2 mm ~ 0.5mm, in particular, the finish layer 600, polyethylene terephthalate (PET: polyethylen terephthalate, polyethylene (PE: Polyethylene), polypropylene (PP: Polypropylene) made of any one of the upper layer of the thermal insulation layer 300, the adhesive layer is applied evenly on top of the finishing layer 600 laminated by the heat-extrusion roller 700, and then monolium, reinforced floor And, by laminating the auxiliary finishing layer 610 made of any one of the tecotile to emphasize the beauty of the completed heating sheet, it is possible to supply a comfortable using environment.

In particular, the finished heating sheet is easy to store the mass produced heating sheet by winding the heating sheet in a rotating roller (not shown), and can be sold and supplied by cutting the heating sheet in accordance with the usage environment and usage standard of the heating sheet. It becomes possible.

Although specific embodiments of the present invention have been described and illustrated above, it is obvious that the present invention may be embodied in various modifications by those skilled in the art. Such modified embodiments should not be individually understood from the technical spirit or the prospect of the present invention, and such modified embodiments should fall within the scope of the appended claims.

Claims

Heating element manufacturing step of producing a heating element 100 for dissipating heat; (S100)

Foaming fabric manufacturing step of manufacturing the foaming fabric 200; (S200)

Foaming fabric laminating step of laminating the foaming fabric 200 on the upper / lower portion of the heating element 100; (S300)

A first laminating step of laminating the insulating layer 300 on the foaming fabric 200 and the reflective layer 400 on the bottom; (S500) and

In the second laminating step of laminating the finishing layer 600 on the heat insulating layer 300, and the moisture-proof layer 500 on the bottom of the reflective layer 400; (S600)

The foaming fabrication step, the solid dissolving step of dissolving the solid agent 210 in the heating tank 220 for 5 to 10 seconds at 500 ℃; (S100 ")

Foaming solution manufacturing step of mixing the dissolved solid agent 210 with the blowing agent in the mixing tank 230; (S200 ")

Foam mixed solution coating step of applying the mixed foam mixture 240 to the foam line 250; (S300 ")

Foaming fabric manufacturing step of producing a foaming fabric 200 by foaming the foamed mixture 240 by heating the foamed mixture 240 applied to the foaming line 250 at 60 ℃ ~ 120 ℃ for 5 to 10 seconds; (S400 " ) And

Foaming fabric cutting step of cutting the foaming foam 200 to a predetermined thickness; (S500 ")

Heating sheet manufacturing method characterized in that it comprises a.
The method of claim 1, wherein the heating element manufacturing step,

A conductive composition manufacturing step of preparing a conductive composition by mixing the liquid silicone rubber and conductive carbon black; (S100 ')

Stirring the diluent to the conductive composition; (S200 ')

Curing step of molding and curing the conductive composition stirred in a predetermined mold; (S300 ')

Heating sheet manufacturing method characterized in that it comprises a.
The method of claim 1, wherein the solid body 210,

Polyethylene (PE: Polyethylene), Polyurethane (PU: Polyurethane), Polyvinyl chloride (PVC: PolyvinyChloride), Polypropylene (PP: Polypropylene) Method for producing a heating sheet characterized in that made of any one.
According to claim 1, wherein the foam fabric step,

The foaming fabric 200 is laminated on the upper and lower portions of the heating element 100, and the inner surface of the foaming fabric 200 is heated by a flame of 100 ° C. to 150 ° C. by a heating means 260. Method of producing a heating sheet, characterized in that by pressing the compression of the foam fabric 200 and the heating element 100 for 3 to 5 seconds at a pressure of 1TON.
The method of claim 1, wherein the first lamination method (S500),

After laminating the insulating layer 300 on the foamed fabric 200 and the reflective layer 400 on the foamed fabric 200, 1 ton for 3 to 5 seconds at 200 ° C. to 250 ° C. in a heat extrusion roller 700. Heat-sealing sheet manufacturing method characterized in that the heat-sealed under pressure.
The method of claim 1, wherein the second lamination method (S600),

After laminating the finishing layer 600 on the heat insulating layer 300 and laminating the moisture proof layer 500 on the bottom of the reflective layer 400, 1 ton pressure for 3 to 5 seconds at 200 ℃ ~ 250 ℃ in the heat extrusion roller 700 Heat-sealing sheet manufacturing method characterized in that the heat-sealing.
The method of claim 1, wherein the thermal insulation layer 300 and the moisture barrier layer 500,

Polyethylene terephthalate (PET: polyethylen terephthalate, polyethylene (PE: Polyethylene), polypropylene (PP: Polypropylene) A heating sheet manufacturing method characterized in that made of any one.
The method of claim 1, wherein the reflective layer 400,

Polyethylene terephthalate (PET: polyethylen terephthalate, polyethylene (PE: Polyethylene), polypropylene (PP: Polypropylene) A heating sheet manufacturing method characterized in that made of any one.
The method of claim 1, wherein the finishing layer 600,

Polyethylene terephthalate (PET: polyethylen terephthalate, polyethylene (PE: Polyethylene), made of any one of polypropylene (PP: Polypropylene) monolayer on the upper layer of the finishing layer 600 laminated on the insulating layer 300, reinforced floor, Method for producing a heating sheet, characterized in that further laminated to the auxiliary finishing layer 610 made of any one of the tecotile.