CN104159341A - Self-temperature-limiting conductive polymer electrothermal film with grounding layer - Google Patents
Self-temperature-limiting conductive polymer electrothermal film with grounding layer Download PDFInfo
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- CN104159341A CN104159341A CN201410409174.3A CN201410409174A CN104159341A CN 104159341 A CN104159341 A CN 104159341A CN 201410409174 A CN201410409174 A CN 201410409174A CN 104159341 A CN104159341 A CN 104159341A
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- 229920001940 conductive polymer Polymers 0.000 title claims abstract description 40
- 238000010438 heat treatment Methods 0.000 claims abstract description 72
- 239000004744 fabric Substances 0.000 claims abstract description 32
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 21
- 239000002131 composite material Substances 0.000 claims abstract description 18
- 238000009413 insulation Methods 0.000 claims abstract description 6
- 238000004806 packaging method and process Methods 0.000 claims abstract description 6
- 239000004033 plastic Substances 0.000 claims abstract description 6
- 229920003023 plastic Polymers 0.000 claims abstract description 6
- 239000002322 conducting polymer Substances 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 19
- 239000012528 membrane Substances 0.000 claims description 16
- 238000005485 electric heating Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 8
- 239000004745 nonwoven fabric Substances 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 6
- UPWOEMHINGJHOB-UHFFFAOYSA-N oxo(oxocobaltiooxy)cobalt Chemical compound O=[Co]O[Co]=O UPWOEMHINGJHOB-UHFFFAOYSA-N 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 229920001169 thermoplastic Polymers 0.000 claims description 6
- 239000004416 thermosoftening plastic Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 4
- 238000007731 hot pressing Methods 0.000 claims description 4
- -1 polypropylenes Polymers 0.000 claims description 4
- 239000004642 Polyimide Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- ITHZDDVSAWDQPZ-UHFFFAOYSA-L barium acetate Chemical class [Ba+2].CC([O-])=O.CC([O-])=O ITHZDDVSAWDQPZ-UHFFFAOYSA-L 0.000 claims description 3
- 235000014121 butter Nutrition 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 230000000640 hydroxylating effect Effects 0.000 claims description 3
- 239000007943 implant Substances 0.000 claims description 3
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 claims description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000013021 overheating Methods 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 206010011224 Cough Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Central Heating Systems (AREA)
- Surface Heating Bodies (AREA)
Abstract
The invention discloses a self-temperature-limiting conductive polymer electrothermal film with a grounding layer. The self-temperature-limiting conductive polymer electrothermal film comprises a self-temperature-limiting conductive polymer composite heating layer. The upper surface and the lower surface of the self-temperature-limiting conductive polymer composite heating layer are subjected to insulation film thermal plastic packaging; and the upper surface and/ or the lower surface of the heating layer after being subjected to insulation film thermal plastic packaging is hot-pressed and externally-covered with double-layer conductive grid cloth, the surface of which is provided with insulating films. The self-temperature-limiting conductive polymer composite heating layer is provided with a metal electrode. The inner layer conductive grid cloth is connected with the negative electrode of the metal electrode, and the outer layer conductive grid cloth is connected with a ground wire. According to the self-temperature-limiting conductive polymer electrothermal film with the grounding layer, electric energy can be totally converted into heat energy which is mainly far infrared radiant heat, and the self-temperature-limiting conductive polymer electrothermal film has an anti-local-overheating function and is high in safety.
Description
Technical field
The present invention relates to a kind of building heating product, relate in particular to a kind of self temperature limiting electrical conducting polymer electric heating membrane with ground plane.
Background technology
Low-temp radiating electrothermal membrane is as building heating product, and application case is in recent years more and more.Especially be accompanied by the appearance of " low-temp radiating electrothermal membrane " (JG/T 286-2010) product standard and " ceiling panei heating with electro-thermal film system applies technical regulation " (JGJ 319-2013), and the issuing and implementation of country's " clean air action plan ", the technology application of electric heat membrane heating will be more and more extensive.Electric heat membrane heating is applied mainly taking electric floor heating as main, heater Electric radiant Heating Film is laid on to the construction technology under solid wooden compound floor or ceramic tile that is:.Be laid on ceiling with Electric radiant Heating Film and compare with body of wall, electric floor heating requires stricter for " local overheating, the electrical safety " of system.
In prior art, solve Electric radiant Heating Film local overheating and have two kinds of methods:
Method one is the one group of temperature switch of connecting on a strip electrode of Electric radiant Heating Film, and is placed on Electric radiant Heating Film, and in the time that local temperature reaches the qualifications of temperature switch, temperature switch disconnects, and Electric radiant Heating Film opens circuit.In the time that Electric radiant Heating Film surface temperature returns to temperature switch open temp, temperature switch closure, Electric radiant Heating Film energising heating.
The shortcoming of method one is: 1) each temperature switch can only be controlled certain Electric radiant Heating Film area.Large area is mated formation, and temperature switch quantity is huge; 2) temperature detect switch (TDS) be connected wire and have certain thickness, Electric radiant Heating Film is had to certain injury, even can cough up brokenly Electric radiant Heating Film, cause electric leakage; 3) temperature detect switch (TDS) has the number of times restriction of switching and natural aging phenomenon, can affect Heating System of Electric radiant Heating Film useful life; 4) heat spot produces, and whole piece Electric radiant Heating Film is that power-off is not worked, and can affect heating effect.
Method two is that inorganic non-metallic based printing ink Electric radiant Heating Film is in the time being in harmonious proportion conductive carbon paste, add a certain amount of polyvinyl compound, directly utilize the swollen shrinkage principle of heat of this compounds, regulate the inorganic conductive such as graphite or carbon black particle gap, the dizzy distribution of electronics to control its electric conductivity by temperature, the size of electric heating transfer capability reaches the object that prevents local overheating.
The shortcoming of method two is: 1) starting current is large.Certainly the starting current of limitting warm heating cable of national Specification is 6～10 times of rated current; 2) useful life is short.Dilation reaches after certain number of times (common 2000 times), loses efficacy.3) will reach the sudden change (greatly) of resistance value, need rare hydrocarbon compound ratio of doping large, Electric radiant Heating Film enlarged in thickness, affects resistivity and heat-transfer effect.Doping ratio is little, is difficult to reach resistance value sudden change (greatly) to prevent the object of local overheating.
Safety ground technology of the prior art is:
" ceiling panei heating with electro-thermal film system applies technical regulation " (JGJ 319-2013) specified that electrothermal film electric ground heating system is in the time of Electric radiant Heating Film overlying water cement mortar backfill layer, should connect PE line with wire netting and do safety ground, and not do the concrete regulation of safety ground when above covering solid wood compoiste wood floor.In reality most of house ornamentation electrothermal film electric floor heating timber floor surface-veneer engineered in, all do not do safety ground.
The shortcoming of this method is:
1) wire netting easily punctures Electric radiant Heating Film in work progress, causes electric leakage; 2) this external wire netting does the way of ground plane, almost cannot realize for the ground end structure of straight paving Electric radiant Heating Film under compoiste wood floor or carpet.And do not do safety ground, will there is electrical safety hidden danger; 3) wire netting, for a long time in cement structures, especially at the damp ground such as bathroom, toilet, can greatly reduce even and open circuit because corrosion makes electric conductivity, thereby loses the function of safety ground;
Summary of the invention
The object of this invention is to provide strong, the safe self temperature limiting electrical conducting polymer electric heating membrane with ground plane of a kind of local overheating protectiveness.
The object of the invention is to be achieved through the following technical solutions:
Self temperature limiting electrical conducting polymer electric heating membrane with ground plane of the present invention, comprise self temperature limiting electrical conducting polymer composite zone of heating, the upper surface of described self temperature limiting electrical conducting polymer composite zone of heating and lower surface seal with dielectric film thermoplastic, the conductive grid cloth of double-deck appearance tape insulation film is covered in the upper surface of the zone of heating after plastic packaging and/or lower surface hot pressing outward, described self temperature limiting electrical conducting polymer composite zone of heating is provided with metal electrode, internal layer conductive grid cloth is connected with the negative pole of described metal electrode, and outer conductive grid cloth is connected with ground wire.
As seen from the above technical solution provided by the invention, the self temperature limiting electrical conducting polymer electric heating membrane with ground plane that the embodiment of the present invention provides, taking conducting polymer as exothermic material, can be by whole electric energy energy transform into heat energies and taking far infrared radiation heat as main, have the local overheating of preventing function, Electric radiant Heating Film self is with safety ground layer.Can solve and when Electric radiant Heating Film is particularly useful for electric floor heating for building heating, avoid the local overheating phenomenon that may occur, and solve in the time of overlying water mud layer due to the problem that produces capacity effect and cause 30mA earth leakage protective device Frequent trip.
Brief description of the drawings
The structural representation of the self temperature limiting electrical conducting polymer electric heating membrane with ground plane that Fig. 1 provides for the embodiment of the present invention.
In figure: 1, self temperature limiting electrical conducting polymer composite zone of heating, 2, internal layer conductive grid cloth, 3, outer conductive grid cloth, 4, dielectric film.
Embodiment
To be described in further detail the embodiment of the present invention below.
Self temperature limiting electrical conducting polymer electric heating membrane with ground plane of the present invention, its preferably embodiment be:
Comprise self temperature limiting electrical conducting polymer composite zone of heating, the upper surface of described self temperature limiting electrical conducting polymer composite zone of heating and lower surface seal with dielectric film thermoplastic, the conductive grid cloth of double-deck appearance tape insulation film is covered in the upper surface of the zone of heating after plastic packaging and/or lower surface hot pressing outward, described self temperature limiting electrical conducting polymer composite zone of heating is provided with metal electrode, internal layer conductive grid cloth is connected with the negative pole of described metal electrode, and outer conductive grid cloth is connected with ground wire.
Described self temperature limiting electrical conducting polymer composite zone of heating is made by the following method:
First, the material of pressing below proportion by weight is mixed, stirred, under 70～75 DEG C of conditions, react and within 3～4 hours, synthesize with the conductive polymer composite of certainly limitting temperature function: 100 parts of conducting polymers, 5～10 parts of chlorinated polypropylenes, 5～10 parts of butters of tin, 3～5 parts of hydroxylating polychloroprene, 0.1～0.5 part of cobalt sesquioxide, 1.0～1.5 parts of barium titanates, 1.0～1.5 parts of barium acetates, 25～30 parts of HMMMs, 50～60 parts, ethyl acetate.
Then, the material of made is coated on to atresia or the aperture of implant electrode in advance with spraying or blade coating technique and is less than on cotton, nonwoven fabrics, glass fibre or the organic fiber cloth of 0.1～10mm, upper and lower surface is sealed with dielectric film thermoplastic.
Grid mesh 6～8 orders of described internal layer conductive grid cloth, material is glass fabric, cotton or the nonwoven fabrics of coated with conductive coating, is at least provided with an one metal wire or sheet metal along grid long axis direction, resistance value 4.8～10.0M Ω/cm
2, the material of dielectric film is PET, OPP or PVC, the thermosol of employing is EVA, PS resin.
Grid mesh 8～15 orders of described outer conductive grid cloth, glass fabric, cotton or the nonwoven fabrics of material coated with conductive coating, have an one metal wire or sheet metal at least along grid long axis direction, resistance value 0.48～0.96M Ω/cm
2, dielectric film is PET, OPP, PVC or polyimides, the thermosol of employing is EVA, PS resin.
Self temperature limiting electrical conducting polymer electric heating membrane with ground plane of the present invention taking conducting polymer as exothermic material, has following three kinds of functions: (1) can be by whole electric energy energy transform into heat energies and taking far infrared radiation heat as main simultaneously; (2) there is the local overheating of preventing function; (3) Electric radiant Heating Film self is with safety ground layer.Can solve and when Electric radiant Heating Film is particularly useful for electric floor heating for building heating, avoid the local overheating phenomenon that may occur, and solve in the time of overlying water mud layer due to the problem that produces capacity effect and cause 30mA earth leakage protective device Frequent trip.
Its main beneficial effect is:
Solve and prevented that the skewness of the external temperature detect switch (TDS) of Electric radiant Heating Film in local overheating technology and its can be detrimental to the problem of wound to Electric radiant Heating Film;
Solve inorganic non-metallic based printing ink Electric radiant Heating Film and mixed the problem that starting current is excessive, useful life is limited that polyethylene kind material causes;
Solve the problem that electrothermal film electric floor heating wire netting bar in the time that cement sky packed layer is constructed easily punctures Electric radiant Heating Film;
Solve external wire netting and done the problem that the easy corrosion of ground plane was lost efficacy;
Solve the problem of laying Electric radiant Heating Film under timber floor and cannot do ground plane;
Solve the disadvantage of prior art processes aspect overtemperature protection;
Solve to lay under concrete floor and outside Electric radiant Heating Film, put the drawback of wire netting as ground plane;
Realized " electric heating conversion, overtemperature protection, safety ground " product integrated, realized industrialization processing, product quality detects guaranteed, has avoided erecting bed processing and fabricating cannot detect the drawback that is prone to potential safety hazard;
Technical scheme is succinct, material materials are economized, saved resource and product cost.
Specific embodiment:
Make by following steps:
1, with certainly limitting the conductive polymer composite of temperature function synthetic: conducting polymer 100g, chlorinated polypropylene 5～10g, butter of tin 5～10g, hydroxylating polychloroprene 3～5g, cobalt sesquioxide 0.1～0.5g, barium titanate 1.0～1.5g, barium acetate 1.0～1.5g, HMMM (HMMM III) 25～30g, ethyl acetate 50～60g.Listed material is mixed, stirred, under 70～75 DEG C of conditions, react 3～4 hours.
2, nude Electric radiant Heating Film generates: the material that step 1 is made is coated on atresia or the aperture of implant electrode in advance with spraying or blade coating technique and is less than on cotton, nonwoven fabrics, glass fibre and the organic fiber cloth of 0.1～10mm, coating amount 300～350g.
3, nude Electric radiant Heating Film is sealed with dielectric film (PET, OPP, PVC) thermoplastic up and down.
4, the conductive grid cloth of bilayer zone insulating barrier is covered in the Electric radiant Heating Film hot pressing after plastic packaging outward.Internal layer: grid mesh 6～8 orders, material is glass fabric, cotton, nonwoven fabrics and other inorganic and organic fiber grid cloth (having an one metal wire or sheet metal at least along grid long axis direction) of coated with conductive coating, resistance value 4.8～10.0M Ω/cm
2, dielectric film is PET, OPP, PVC, thermosol is EVA, PE resin; Outer: grid mesh 8～15 orders, material identical with internal layer (having an one metal wire or sheet metal at least along grid long axis direction), resistance value 0.48～0.96M Ω/cm
2.Dielectric film is PET, OPP, PVC, polyimides, and thermosol is EVA, PE resin.Double-deck conductive grid cloth can one side be laminating also can be two-sided laminating up and down.
5, electric wire connects: according to length requirement, step 4 Electric radiant Heating Film after treatment is cut, peeled off, heating layer two lateral electrodes connect and welding lead with wiring card, respectively as power positive cathode; Internal layer conductive grid cloth wire or sheet metal are connected with heating layer negative pole (zero line); Outer conductive grid cloth wire or sheet metal welding lead, be connected with ground wire.Carry out electric insulation for each layer.
Inside and outside layer conductive grid cloth can be simultaneously double-deck or individual layer substitute with wire netting and the metallic film of same mesh size.But now internal layer connecting line must ensure to be connected with negative pole, otherwise has major safety risks.
The above; only for preferably embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (4)
1. the self temperature limiting electrical conducting polymer electric heating membrane with ground plane, it is characterized in that, comprise self temperature limiting electrical conducting polymer composite zone of heating, the upper surface of described self temperature limiting electrical conducting polymer composite zone of heating and lower surface seal with dielectric film thermoplastic, the conductive grid cloth of double-deck appearance tape insulation film is covered in the upper surface of the zone of heating after plastic packaging and/or lower surface hot pressing outward, described self temperature limiting electrical conducting polymer composite zone of heating is provided with metal electrode, internal layer conductive grid cloth is connected with the negative pole of described metal electrode, and outer conductive grid cloth is connected with ground wire.
2. the self temperature limiting electrical conducting polymer electric heating membrane with ground plane according to claim 1, is characterized in that, described self temperature limiting electrical conducting polymer composite zone of heating is made by the following method:
First, the material of pressing below proportion by weight is mixed, stirred, under 70～75 DEG C of conditions, react and within 3～4 hours, synthesize with the conductive polymer composite of certainly limitting temperature function: 100 parts of conducting polymers, 5～10 parts of chlorinated polypropylenes, 5～10 parts of butters of tin, 3～5 parts of hydroxylating polychloroprene, 0.1～0.5 part of cobalt sesquioxide, 1.0～1.5 parts of barium titanates, 1.0～1.5 parts of barium acetates, 25～30 parts of HMMMs, 50～60 parts, ethyl acetate.
Then, the material of made is coated on to atresia or the aperture of implant electrode in advance with spraying or blade coating technique and is less than on cotton, nonwoven fabrics, glass fibre or the organic fiber cloth of 0.1～10mm, upper and lower surface is sealed with dielectric film thermoplastic.
3. the self temperature limiting electrical conducting polymer electric heating membrane with ground plane according to claim 2, it is characterized in that, grid mesh 6～8 orders of described internal layer conductive grid cloth, material is glass fabric, cotton or the nonwoven fabrics of coated with conductive coating, at least be provided with an one metal wire or sheet metal along grid long axis direction, resistance value 4.8～10.0M Ω/cm
2, the material of dielectric film is PET, OPP or PVC, the thermosol of employing is EVA, PE resin.
4. the self temperature limiting electrical conducting polymer electric heating membrane with ground plane according to claim 2, it is characterized in that, grid mesh 8～15 orders of described outer conductive grid cloth, glass fabric, cotton or the nonwoven fabrics of material coated with conductive coating, have an one metal wire or sheet metal at least along grid long axis direction, resistance value 0.48～0.96M Ω/cm
2, dielectric film is PET, OPP, PVC or polyimides, the thermosol of employing is EVA, PE resin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410409174.3A CN104159341B (en) | 2014-08-19 | 2014-08-19 | With the self temperature limiting electrical conducting polymer electric heating membrane of ground plane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410409174.3A CN104159341B (en) | 2014-08-19 | 2014-08-19 | With the self temperature limiting electrical conducting polymer electric heating membrane of ground plane |
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| CN104159341A true CN104159341A (en) | 2014-11-19 |
| CN104159341B CN104159341B (en) | 2015-12-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107277948A (en) * | 2017-05-03 | 2017-10-20 | 陶志斌 | Far infrared compound resin heating base plate, its preparation method and application |
| CN109952810A (en) * | 2016-11-16 | 2019-06-28 | 株式会社电装 | Radiant heating device |
| US10841980B2 (en) | 2015-10-19 | 2020-11-17 | Laminaheat Holding Ltd. | Laminar heating elements with customized or non-uniform resistance and/or irregular shapes and processes for manufacture |
| US10925119B2 (en) | 2015-01-12 | 2021-02-16 | Laminaheat Holding Ltd. | Fabric heating element |
| USD911038S1 (en) | 2019-10-11 | 2021-02-23 | Laminaheat Holding Ltd. | Heating element sheet having perforations |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10925119B2 (en) | 2015-01-12 | 2021-02-16 | Laminaheat Holding Ltd. | Fabric heating element |
| US10841980B2 (en) | 2015-10-19 | 2020-11-17 | Laminaheat Holding Ltd. | Laminar heating elements with customized or non-uniform resistance and/or irregular shapes and processes for manufacture |
| CN109952810A (en) * | 2016-11-16 | 2019-06-28 | 株式会社电装 | Radiant heating device |
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| CN107277948A (en) * | 2017-05-03 | 2017-10-20 | 陶志斌 | Far infrared compound resin heating base plate, its preparation method and application |
| CN107277948B (en) * | 2017-05-03 | 2021-01-22 | 东莞市宏阳热能科技有限公司 | Far infrared composite resin heating substrate, preparation method and application thereof |
| USD911038S1 (en) | 2019-10-11 | 2021-02-23 | Laminaheat Holding Ltd. | Heating element sheet having perforations |
Also Published As
| Publication number | Publication date |
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| CN104159341B (en) | 2015-12-02 |
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