CN101646275A

CN101646275A - Electric heating piece and preparation method thereof

Info

Publication number: CN101646275A
Application number: CN200810144096A
Authority: CN
Inventors: 何珊珊
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-06
Filing date: 2008-08-06
Publication date: 2010-02-10

Abstract

The invention discloses an electric heating piece and a preparation method thereof. The electric heating piece is formed by the following steps: integrally extruding a non-conductive layer and a conductive layer to form a conductive film having a positive temperature coefficient; printing two staggered conductive circuits on the surface of the conductive film; and riveting two conductive pieces tothe conductive circuits and the conductive film, wherein the conductive material thereof is an integrated conductive film. The electric heating piece can be adhered to a workpiece and a soft substrate without printing conductive circuit thereon after printing conductive carbon. The method has the advantages of convenient production and manufacture, quick heating and effective temperature preservation.

Description

Electric heating piece and method for making thereof

Technical field

The present invention relates to a kind of electric heating piece structure, particularly a kind of heating element that can be applicable to rearview mirror defrosting, electrical blanket, insulation pad etc.

Background technology

Along with the lifting of standard of living, various heating or warm keeping element or product arise at the historic moment, and are widely used on the product miscellaneous, as be located in the country in frigid zone, winter temperature is extremely low to cause the automobile rearview mirror frosting, often needs to cause the inconvenience in the driving with its surface of manual wipping; Perhaps, because of the weather temperature is low, and the heat insulation effect of blanket is restricted.

For solving the above problems, therefore heating elements such as installing electric heating piece at the automobile rearview mirror back side additional is arranged with defrosting, or in blanket, bury heating element underground to promote heat insulation effect.Its heating element then such as No. the 474547th, the novel patent of TaiWan, China bulletin the announcement electric heating piece, its again a soft board be longitudinally set with interlaced positive and negative electric lead more than two, be horizontally set with thermal wire more than two again forming the mesh shape, and make electric lead and thermal wire connection in series-parallel to be divided into several heating regions.Heating is with the effect of defrosting or insulation though its electric heating piece can heat up, precisely because electric heating piece mainly is to be printed on soft board to form positive and negative electric lead with electrically conductive ink, and printing conductive carbon forms thermal wire, its heat conduction only is thermal conductive wire, slow or the temperature maintenance of the programming rate of temperature is restricted, and can't reach the heating or the heat preservation effect of expection, and its electric lead is to form with electrically conductive ink printing, oven dry, manufactures loaded down with trivial details disadvantages such as time-consuming.

This shows that above-mentioned existing article still have above-mentioned disappearance, be not a kindhearted design, and demand urgently being improved.

Summary of the invention

At the deficiencies in the prior art, the objective of the invention is to: a kind of electric heating piece and method for making thereof are provided, and it must printing conductive carbon, is convenient to manufacture, and more can heat up rapidly during use, and can effectively keep temperature to reach purpose of energy saving.

For achieving the above object, the technical solution used in the present invention is:

A kind of electric heating piece is characterized in that, comprising:

One conducting film comprises a non-conductive layer and a conductive layer;

At least two conducting wires are printed on the surface of described conductive layer, and described two conducting wires are that the And United Even that is interlaced connects, and described conducting film is string United with conduction circuit The and is electrically connected;

At least two conducting strips are riveted on the end points and the described non-conductive layer bottom surface of described two conducting wires respectively.

A kind of method for making of electric heating piece is characterized in that, its step is as follows:

Be a conducting film with non-conducting material and electric conducting material one extrusion molding earlier, described conducting film contains an at least one non-conductive layer and a conductive layer;

Again basic unit's glue is fitted on the non-conductive layer of described conducting film;

At described conductive layer surface printing conductive inks, and oven dry is to form at least two conducting wires;

Described two conducting strips are riveted on the end points and the described non-conductive layer bottom surface of described conducting wire respectively.

Compared with prior art, the beneficial effect that has of the present invention is:

1, electric conducting material of the present invention is a whole piece formula conducting film, and can directly be attached on workpiece or the flexible substrate, and must printing conductive carbon, simple structure, be convenient to manufacture, and the full slice system conductive film can heat up rapidly, and can effectively keep temperature and reach purpose of energy saving.

2, the non-conductive layer of conducting film of the present invention and conductive layer all fit in and contain PETG (Polyethylene Terephthalate for containing the PE film, PET), polypropylene (Polyproylene, PP) or Merlon (Polycarbonate, PC) and composition thereof film, make between conductive layer, non-conductive layer and basic unit and can closely glue together, and there is not the disappearance of ablation, the really effectively quality of product and production efficiency.

Description of drawings

Fig. 1 is the schematic diagram of electric heating piece of the present invention;

Fig. 2 is the perspective exploded view of electric heating piece of the present invention;

Fig. 3 is the cut-away view of electric heating piece of the present invention;

Fig. 4 is the rubberizing schematic diagram of electric heating piece of the present invention;

Fig. 5 is another embodiment cut-away view of electric heating piece of the present invention;

Fig. 6 is an embodiment perspective exploded view again of electric heating piece of the present invention;

Fig. 7 is an embodiment cut-away view again of electric heating piece of the present invention;

Fig. 8 is the embodiment flow chart of tool electric heating piece method for making of the present invention.

Description of reference numerals: 1-electric heating piece; The 10-conducting film; The 11-non-conductive layer; The 12-conductive layer; The 20-conducting wire; The 30-conducting strip; The 31-rivet; The 40-rubberizing; 50-basic unit.

Embodiment

Your juror is convenient to understand content of the present invention in order to make, and the effect that can reach, cooperates diagram to enumerate a specific embodiment now, is described in detail as follows:

At first, see also schematic diagram, perspective exploded view and the cut-away view thereof of Fig. 1, Fig. 2 and electric heating piece of the present invention shown in Figure 3, its electric heating piece 1 comprises:

One conducting film 10, the pliability film that comprises a non-conductive layer 11 and a conductive layer 12, its non-conductive layer is to contain polyethylene film (polyethyene, PE), PETG (PolyethyleneTerephthalate, PET), polypropylene (Polyproylene, PP) or Merlon (Polycarbonate, film PC), conductive layer then is to have the positive temperature coefficient resistor characteristic and contain polyethylene (polyethyene, film PE);

At least two conducting wires 20 are printed on conductive layer 12 surfaces of described conducting film 10, and two conducting wire 20 is to be interlaced Zhi And United Even to connect, and described conducting film 10 is with conducting wire 20 The and is electrically connected in series;

At least two conducting strips 30 are riveted on non-conductive layer 11 bottom surfaces of the end points and the conducting film 10 thereof of described two conducting wires 20 respectively with rivet 31.

The electric heating piece that relies on above-mentioned component composition to form, its electric conducting material is a whole piece formula conducting film, and can be coated with last layer rubberizing 40 (seeing also shown in Figure 4) on the conducting film surface that is printed with the conducting wire, rely on the stickup of rubberizing 40 can directly fit on the products such as the workpiece of desire heating or insulation or flexible substrate, and must printing conductive carbon, simple structure, be convenient to manufacture, and the full slice system conductive film can heat up rapidly, and can effectively keep temperature, and via the resistance material that uses positive temperature coefficient, in temperature-rise period because the expansion of material itself, to make that resistance value relatively improves, therefore the magnitude of current of input also will reduce, and reach constant temperature and purpose of energy saving.If its non-conductive layer and conductive layer are selected from the tool flexible materials, more can make the product of different size or moulding in response to client's various demands.

Moreover, please consult another embodiment cut-away view of electric heating piece of the present invention shown in Figure 5, it also can be coated with last layer rubberizing 40 at non-conductive layer 11 back sides of aforementioned conducting film 10, relies on the stickup of rubberizing 40 can be easy to the to fit product of desire heating or insulation.

Secondly, please perspective exploded view and the cut-away view of an embodiment again of Fig. 6, electric heating piece of the present invention shown in Figure 7 again; Wherein

One conducting film 10, the pliability film that comprises a non-conductive layer 11 and a conductive layer 12, its non-conductive layer 11 are to contain polyethylene (polyethyene, film PE), conductive layer then is to have the positive temperature coefficient resistor characteristic and contain polyethylene (polyethyene, film PE);

At least one basic unit 50, it is glued at the surface of the non-conductive layer 11 of described conducting film 10, its basic unit contains PETG (Polyethylene Terephthalate, PET), polypropylene (Polyproylene, PP) or Merlon (Polycarbonate, PC) and composition thereof film.

At least two conducting wires 20 are printed on conductive layer 12 surfaces of described conducting film 10, and two conducting wire 20 is interlaced Zhi And United Even and connects, and described conducting film 10 is with conducting wire 20 The and is electrically connected in series;

The electric heating piece that relies on above-mentioned component composition to form, the conductive layer 10 and the non-conductive layer 11 of its conducting film 10 all contain polyethylene (polyethyene, PE) film, close at least one heterogeneous film basic unit 50 at non-conductive layer 11 surface glues again, as contain PETG (Polyethylene Terephthalate, PET), polypropylene (Polyproylene, PP) or Merlon (Polycarbonate, PC) and composition thereof film, make conductive layer, can closely glue together between non-conductive layer and basic unit, and there is not the disappearance of ablation, the really effectively quality of product and production efficiency.

Secondly, see also the preparation flow chart of electric heating piece of the present invention shown in Figure 8, its step is as follows:

Be will contain polyethylene (polyethyene, non-conductive material PE) with contain polyethylene (polyethyene, PE) conduction material one extrusion molding is a conducting film, described conducting film comprises a non-conductive layer and a conductive layer at least;

Again with one contain PETG (Polyethylene Terephthalate, PET), polypropylene (Polyproylene, PP) or Merlon (Polycarbonate, basic unit PC) fits on the non-conductive layer of described conducting film.

Described conductive layer surface is printing conductive inks then, and dries with at least two conducting wires of formation, and described two conducting wires are to be interlaced, and its conductive layer then is connection in series-parallel with the conducting wire and is connected;

Described two conducting strips are riveted on the non-conductive layer bottom surface of the end points and the conducting film thereof of described conducting wire respectively.

Rely on the made electric heating piece of above-mentioned steps, the conductive layer 12 and the non-conductive layer 11 of its conducting film 10 all are to contain polyethylene film (polyethyene, PE) film, close at least one heterogeneous film basic unit 50 at non-conductive layer 11 surface glues again, as contain PETG (Polyethylene Terephthalate, PET), polypropylene (Polyproylene, PP) or Merlon (Polycarbonate, PC) film, make conductive layer, can closely glue together between non-conductive layer basic unit, and there is not the disappearance of ablation, the really effectively quality of product and production efficiency.

More than explanation is just illustrative for the purpose of the present invention; and nonrestrictive, those of ordinary skills understand, under the situation of the spirit and scope that do not break away from claim and limited; can make many modifications, variation or equivalence, but all will fall within protection scope of the present invention.

Claims

1. an electric heating piece is characterized in that, comprising:

One conducting film comprises a non-conductive layer and a conductive layer;

At least two conducting wires are printed on the surface of described conductive layer, and described two conducting wires are to be interlaced, and described conducting film is electrically connected with the conducting wire;

2. electric heating piece according to claim 1 is characterized in that: described non-conductive layer is the film that contains polyethylene film, PETG, polypropylene or Merlon.

3. electric heating piece according to claim 2 is characterized in that: described conducting film is the film that contains polyethylene and have the positive temperature coefficient resistor characteristic.

4. electric heating piece according to claim 3 is characterized in that: the surface of described electric heating piece one side is the rubberizing of fitting.

5. according to claim 1 or 4 described electric heating pieces, it is characterized in that: more comprise at least one basic unit, it is glued at the surface of described non-conductive layer.

6. electric heating piece according to claim 5 is characterized in that: described basic unit is the film that contains PETG, polypropylene or Merlon.

7. electric heating piece according to claim 6 is characterized in that: the rubberizing of fitting of the surface of described electric heating piece one side.

8. the method for making of an electric heating piece is characterized in that, its step is as follows:

9. the method for making of electric heating piece according to claim 8, it is characterized in that: described conductive layer is to contain poly film.

10. the method for making of electric heating piece according to claim 9, it is characterized in that: described non-conductive layer is a polyethylene film.

11. the method for making of electric heating piece according to claim 10 is characterized in that: described basic unit is the film that contains PETG, polypropylene or Merlon.

12. the method for making of electric heating piece according to claim 11 is characterized in that: described two conducting wires are to be interlaced.

13. the method for making of electric heating piece according to claim 12 is characterized in that: described conducting film is connection in series-parallel with the conducting wire and is connected.