CN111263474A - Electrothermal film with overheat protection function - Google Patents
Electrothermal film with overheat protection function Download PDFInfo
- Publication number
- CN111263474A CN111263474A CN202010174000.9A CN202010174000A CN111263474A CN 111263474 A CN111263474 A CN 111263474A CN 202010174000 A CN202010174000 A CN 202010174000A CN 111263474 A CN111263474 A CN 111263474A
- Authority
- CN
- China
- Prior art keywords
- thin
- stainless steel
- silver sheet
- polyester film
- edge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052709 silver Inorganic materials 0.000 claims abstract description 36
- 239000004332 silver Substances 0.000 claims abstract description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 34
- 229920006267 polyester film Polymers 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 27
- 239000010935 stainless steel Substances 0.000 claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 19
- 238000003825 pressing Methods 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 3
- 238000013021 overheating Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 description 11
- 238000005485 electric heating Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 229920002799 BoPET Polymers 0.000 description 2
- 239000005041 Mylar™ Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005653 Brownian motion process Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005537 brownian motion Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/145—Carbon only, e.g. carbon black, graphite
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/18—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being embedded in an insulating material
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
Landscapes
- Surface Heating Bodies (AREA)
Abstract
The invention relates to the technical field of electrothermal films, and discloses an electrothermal film with an overheat protection function, which comprises a carbon bar and a polyester film arranged above and below the carbon bar, wherein stainless steel grooves are formed in the left side and the right side of the polyester film, the lower side edge of each stainless steel groove is pressed on the edge of the polyester film and is positioned below the side edge of the carbon bar, a silver sheet is arranged at the inner bottom of each stainless steel groove, one side edge of each silver sheet is flush with the lower side edge of each stainless steel groove and is also positioned below the side edge of the carbon bar, the silver sheets are arranged corresponding to the carbon bar, and a sealing rubber strip is arranged at the top end of each silver sheet. The invention sets thin-wall bags on the left and right sides of the carbon bar, sets metal current-carrying bar and silver sheet on the upper and lower sides of the nip of the thin-wall bags, the gas filled in the thin-wall bags is used as detecting element, when the temperature rises, the gas in the thin-wall bags is expanded by heat, the metal current-carrying bar and the silver sheet are separated and contacted, thereby the electrification of the carbon bar is cut off, and the effect of local overheating protection is achieved.
Description
Technical Field
The invention relates to the technical field of electrothermal films, in particular to an electrothermal film with an overheat protection function.
Background
The electrothermal film is a semi-transparent polyester film capable of heating after being electrified, and is made of conductive special printing ink and metal current carrying strips which are processed and hot-pressed between insulating polyester films. When the electric heating film is used as a heating body, heat is sent into a space in a radiation mode, so that a human body and an object are firstly warmed, and the comprehensive effect of the electric heating film is superior to that of a traditional convection heating mode. The heating principle of the electrothermal film is that under the action of an electric field, carbon molecular groups in a heating body generate Brownian motion, violent friction and impact occur among carbon molecules, generated heat energy is transmitted outwards in the form of far infrared radiation and convection, the electrothermal film is a pure resistance circuit, so the conversion efficiency is high, and 100% of electric energy input is effectively converted into over 66% of far infrared radiation energy and 33% of convection heat energy.
Referring to fig. 1-2, stainless steel grooves 3 are padded at the left and right ends of a carbon strip 2, silver sheets 4 are arranged above the stainless steel grooves 3, an upper polyester film 1 and a lower polyester film 1 are pressed to complete packaging, and the silver sheets 4 at the two sides are led out to be connected with power through wires.
At present, the electrothermal film has a lack of protection function for local overheating, when the electrothermal film is applied to a floor heating system, because the surface of the decorative layer is covered with articles with poor heat transfer performance, such as a quilt, floor furniture and the like, the heat at the lower part of the decorative layer is gathered and cannot be dissipated, the local overheating is easy to damage equipment, and potential safety hazards are easily caused. The electric heating film of part production lacks overheat protection or installs a metal fuse, actually only produces the guard action to overflowing, and local overheat problem still is difficult to solve, to this, proposes an electric heating film local overheat protection function, aims at solving above-mentioned problem.
Disclosure of Invention
Aiming at the defects of the existing electrothermal film in the process of being applied to a floor heating system, which is provided by the background technology, the invention provides the electrothermal film with an overheat protection function, which has the advantages of local overheat protection and strong safe bearing performance and solves the problems provided by the background technology.
The invention provides the following technical scheme: an electrothermal film with an overheating protection function comprises a carbon bar and a polyester film arranged above and below the carbon bar, wherein stainless steel grooves are formed in the left side and the right side of the polyester film, the lower side edge of each stainless steel groove is pressed against the edge of the polyester film and is positioned below the side edge of the carbon bar, a silver sheet is arranged at the inner bottom of each stainless steel groove, one side edge of each silver sheet is flush with the lower side edge of each stainless steel groove and is also positioned below the side edge of the carbon bar, the silver sheets and the carbon bar are arranged correspondingly, a sealing rubber strip is arranged at the top end of each silver sheet, the upper edge of each sealing rubber strip is pressed against the upper side edge of the polyester film, a thin-wall bag is arranged at the top end of each silver sheet and on one side of each sealing rubber strip, one side of each thin-wall bag and each sealing rubber strip are arranged in a back-to-back and equal-height mode, a clamping opening is formed in the other side of each, and the upper edge and the lower edge of the clamping opening of the thin-wall bag are respectively provided with an extending edge of a silver sheet and a metal current-carrying strip.
Preferably, the metal current carrying strip penetrates through the length direction of the polyester film and is positioned at the inner top of the clamping opening of the thin-wall bag.
Preferably, the gas in the thin-walled bladder is below one atmosphere and is in a deflated state at ambient temperature.
Preferably, the top end of the stainless steel groove is provided with a pressing edge, and the pressing edge is lapped on the top end of the sealing rubber strip.
The invention has the following beneficial effects:
1. the invention sets thin-wall bags on the left and right sides of the carbon bar, sets metal current-carrying bar and silver sheet on the upper and lower sides of the nip of the thin-wall bags, the gas filled in the thin-wall bags is used as detecting element, when the temperature rises, the gas in the thin-wall bags is expanded by heat, the metal current-carrying bar and the silver sheet are separated and contacted, thereby the electrification of the carbon bar is cut off, and the effect of local overheating protection is achieved.
2. According to the invention, the thin-wall bag is opened and closed at one side, the contact between the metal current-carrying strip and the silver sheet is arranged in the clamping opening, and the dead weight of the metal current-carrying strip is utilized, so that the metal current-carrying strip can be well contacted with the silver sheet under the conditions of negative pressure collapse and dead weight pressure of the metal current-carrying strip in the stage that gas in the thin-wall bag is not heated and expanded, and the power supply stability is ensured.
3. According to the invention, the stainless steel grooves are arranged on the left side and the right side of the polyester film, the thin-wall bag is wrapped in the stainless steel grooves, so that the thin-wall bag can be arranged in a floor heating system and still can freely expand and move, the edge sealing of the polyester film is realized, and the thin-wall bag has the function of pressure protection required by being arranged in the floor heating system, meanwhile, the sealing rubber strips are arranged on the edges of the carbon strip and the upper polyester film, the clamping edges of the stainless steel grooves are in lap joint with the sealing rubber strips, when the invention is used in the floor heating system, the upper filling layer, the floor tiles and the like are in press joint above the pressing edges, the sealing rubber strips and the edges of the polyester film can be pressed more tightly to achieve the sealing effect, and meanwhile, the sealing rubber strips can provide buffer protection.
Drawings
FIG. 1 is a schematic cross-sectional view of a conventional electrothermal film;
FIG. 2 is a partial top view of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the present invention;
FIG. 4 is a top view of the distribution of carbon strips and silver flakes in accordance with the present invention.
In the figure: 1. a polyester film; 2. carbon bars; 3. a stainless steel tank; 31. pressing edges; 4. silver flakes; 5. sealing rubber strips; 6. a thin-walled balloon; 7. a metal current carrying strip.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 3-4, an electrothermal film with overheat protection function comprises a carbon bar 2 and a polyester film 1 disposed above and below the carbon bar 2, wherein stainless steel grooves 3 are disposed on both left and right sides of the polyester film 1, the lower side edge of the stainless steel groove 3 is pressed against the edge of the polyester film 1 and is disposed below the side edge of the carbon bar 2, a silver sheet 4 is disposed at the inner bottom of the stainless steel groove 3, one side edge of the silver sheet 4 is flush with the lower side edge of the stainless steel groove 3 and is also disposed below the side edge of the carbon bar 2, the silver sheet 4 is disposed corresponding to the carbon bar 2, a sealing rubber strip 5 is disposed at the top end of the silver sheet 4, the upper edge of the sealing rubber strip 5 is pressed against the upper side edge of the polyester film 1, a thin-wall bag 6 is disposed at the top end of the silver sheet 4 and on one side of the sealing rubber strip 5, one side of the thin-wall bag 6 and the sealing rubber strip 5 are disposed in a back-to-, the interior of the thin-wall bag 6 is filled with expansion gas, and the upper and lower edges of the clamping opening of the thin-wall bag 6 are respectively provided with a metal current-carrying strip 7 and an extending edge of the silver sheet 4.
With reference to fig. 3, the mylar 1 and the carbon bar 2 both adopt the traditional thickness and the pressfitting, the mylar 1 at the lower part and the stainless steel groove 3 are connected by the adhesive pressfitting, the metal current-carrying bar 7 is the length of the whole electric heating film, the silver sheet 4 is bent and attached to the inner bottom of the clamping opening of the thin-wall capsule 6, the silver sheet 4 is in contact connection with the carbon bar 2, and all other connections which are not mentioned all adopt the adhesive pressfitting.
At normal temperature, the gas in the thin-wall bag 6 is lower than one atmospheric pressure, so as to ensure that at normal temperature, the thin-wall bag 6 is in a concave-concave state, the metal current-carrying strip 7 is in stable contact with the silver sheet 4, and the volume change of the gas due to thermal expansion is in a linear relation with the temperature, so that the volume of the thin-wall bag 6 can be calculated according to the length of an actual single film, the amount of the filled gas is determined, and the preset temperature is disconnected.
Wherein, the top of stainless steel groove 3 is equipped with presses along 31, presses along 31 overlap joint in the top of joint strip 5.
The working principle of the present invention is now explained as follows: the stainless steel groove 3 plays a role in protecting the thin-wall bag 6, the thin-wall bag 6 can be freely deformed when being placed below a floor tile, when the temperature rises due to local overheating, gas filled in the thin-wall bag 6 is heated to expand, and one side of the thin-wall bag 6 is connected with the sealing rubber strip 5, so that only a free edge is opened in an expansion state, namely, the metal current-carrying strip 7 at the clamping opening is separated from the silver sheet 4, the power-off of the carbon strip 2 at the position is realized, and referring to the figure 4, after the power-off of the carbon strip 2 at the position, the carbon strips 2 at other parts of the same electric heating film can still continue to work. In addition, when the electric heat membrane is installed in the floor heating system, a gravel layer, a warm-keeping layer and a floor tile layer need to be filled above the electric heat membrane, the weight of the upper decorative layer is pressed on the pressing edge 31 and the sealing rubber strip 5, the edge of the sealing rubber strip 5 is pressed on the upper portion of the polyester film 1 and the upper portion of the silver sheet 4 through the pressing edge 31, and therefore the sealing rubber strip 5 can be effectively utilized for sealing and buffering.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides an electric heat membrane with overheat protection function, includes carbon element strip (2) and places polyester film (1) of carbon element strip (2) upper and lower side, its characterized in that: the left side and the right side of the polyester film (1) are both provided with stainless steel grooves (3), the lower side edges of the stainless steel grooves (3) are pressed on the edges of the polyester film (1) and are positioned below the side edges of the carbon strips (2), the inner bottom of each stainless steel groove (3) is provided with a silver sheet (4), one side edge of each silver sheet (4) is flush with the lower side edge of the corresponding stainless steel groove (3) and is also positioned below the side edge of the corresponding carbon strip (2), the top end of each silver sheet (4) is provided with a sealing rubber strip (5), the upper edge of each sealing rubber strip (5) is pressed on the upper side edge of the polyester film (1), one side of each silver sheet (4) positioned on the corresponding sealing rubber strip (5) is provided with a thin-wall bag (6), one side of each thin-wall bag (6) and each sealing rubber strip (5) are arranged in a back-to-back and equal height mode, the other side of the thin-wall bag (6) is provided with a clamping opening, the thin-wall bag (6) is filled with expansion gas, and the upper side and the lower side of the clamping opening of the thin-wall bag (6) are respectively provided with an extending edge of the silver sheet (4) and a metal current-carrying strip (7).
2. The electrothermal film with the overheat protection function according to claim 1, characterized in that: the metal current-carrying strip (7) penetrates through the length direction of the polyester film (1) and is positioned at the inner top of the clamping opening of the thin-wall bag (6).
3. The electrothermal film with the overheat protection function according to claim 1, characterized in that: the gas in the thin-walled bag (6) is below one atmosphere and is in a deflated state at normal temperature.
4. The electrothermal film with the overheat protection function according to claim 1, characterized in that: the top end of the stainless steel groove (3) is provided with a pressing edge (31), and the pressing edge (31) is lapped on the top end of the sealing rubber strip (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010174000.9A CN111263474A (en) | 2020-03-13 | 2020-03-13 | Electrothermal film with overheat protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010174000.9A CN111263474A (en) | 2020-03-13 | 2020-03-13 | Electrothermal film with overheat protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111263474A true CN111263474A (en) | 2020-06-09 |
Family
ID=70953155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010174000.9A Withdrawn CN111263474A (en) | 2020-03-13 | 2020-03-13 | Electrothermal film with overheat protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111263474A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111993770A (en) * | 2020-08-14 | 2020-11-27 | 温州细芙贸易有限公司 | Garment production is with pressing device with overheat protection |
| CN112229059A (en) * | 2020-09-23 | 2021-01-15 | 刘兴华 | Defrosting structure of air pump water heater |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06203946A (en) * | 1992-12-26 | 1994-07-22 | Kurabe Ind Co Ltd | Flat heater element |
| CN2495023Y (en) * | 2001-09-03 | 2002-06-12 | 葛兴荣 | Ultramicro built-in overcurrent & overheat protector |
| CN1845643A (en) * | 2005-04-06 | 2006-10-11 | 中房集团新技术中心有限公司 | Tubular electric heating device with temperature control switch and overheating protection device |
| CN201444700U (en) * | 2009-07-22 | 2010-04-28 | 崔明学 | Electrothermal film |
| CN107808799A (en) * | 2017-12-01 | 2018-03-16 | 成都华西天然药物有限公司 | A kind of pulse power amplifier overload protection arrangement |
| CN207283843U (en) * | 2017-08-09 | 2018-04-27 | 湖北暖季地暖科技有限公司 | A kind of self limiting temperature PTC Electric radiant Heating Films |
-
2020
- 2020-03-13 CN CN202010174000.9A patent/CN111263474A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06203946A (en) * | 1992-12-26 | 1994-07-22 | Kurabe Ind Co Ltd | Flat heater element |
| CN2495023Y (en) * | 2001-09-03 | 2002-06-12 | 葛兴荣 | Ultramicro built-in overcurrent & overheat protector |
| CN1845643A (en) * | 2005-04-06 | 2006-10-11 | 中房集团新技术中心有限公司 | Tubular electric heating device with temperature control switch and overheating protection device |
| CN201444700U (en) * | 2009-07-22 | 2010-04-28 | 崔明学 | Electrothermal film |
| CN207283843U (en) * | 2017-08-09 | 2018-04-27 | 湖北暖季地暖科技有限公司 | A kind of self limiting temperature PTC Electric radiant Heating Films |
| CN107808799A (en) * | 2017-12-01 | 2018-03-16 | 成都华西天然药物有限公司 | A kind of pulse power amplifier overload protection arrangement |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111993770A (en) * | 2020-08-14 | 2020-11-27 | 温州细芙贸易有限公司 | Garment production is with pressing device with overheat protection |
| CN112229059A (en) * | 2020-09-23 | 2021-01-15 | 刘兴华 | Defrosting structure of air pump water heater |
| CN112229059B (en) * | 2020-09-23 | 2021-12-14 | 东莞市菲普斯特节能设备有限公司 | Defrosting structure of air pump water heater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111263474A (en) | Electrothermal film with overheat protection function | |
| CN201571213U (en) | Electric heating composite board for geothermal heating | |
| CN100543354C (en) | A kind of high-strength vacuum insulation plate | |
| CN102083246A (en) | Far-infrared electric heating film | |
| CN202713652U (en) | Stuck-on type soft heater | |
| CN201849795U (en) | Air column bag for refrigerator package | |
| CN205130488U (en) | Heat sealing device of bag making machine | |
| CN202163039U (en) | Isothermal electrical heating press plate | |
| CN204373039U (en) | The brilliant heat-conducting plate of composite Nano carbon | |
| CN215397274U (en) | A high-efficient system bag machine for degradable disposal bag | |
| CN201260248Y (en) | Electric heating membrane | |
| CN205890681U (en) | Be suitable for car as a house of sojourning in in utmost point cold region district | |
| CN202053821U (en) | Electric heating picture with electric heating film | |
| CN202634729U (en) | Novel far-infrared heating sheet | |
| CN201039480Y (en) | Low energy consumption electric heating film heater | |
| CN206551646U (en) | A kind of energy-saving luminous material press fit device | |
| CN207388368U (en) | Mask hot-press equipment with heat protection function | |
| CN206769143U (en) | Super insulation bridge insulation thermal resistance section bar | |
| CN206242483U (en) | A kind of oxidation resistant Packing Machine heating brick | |
| CN206774565U (en) | A kind of continuous cold extrusion photovoltaic interconnected copper band | |
| CN201365351Y (en) | Soft and hard material combined heater | |
| CN202670165U (en) | Heating structure of thermoelectric sealer | |
| CN205891418U (en) | Hand compression moulding material film capper | |
| CN205717981U (en) | A kind of solar water heater energy acceptance device | |
| CN206899894U (en) | A kind of flexible electric heating composite sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200609 |
|
| WW01 | Invention patent application withdrawn after publication |