CN2845381Y

CN2845381Y - Aluminium heating film

Info

Publication number: CN2845381Y
Application number: CN 200520125161
Authority: CN
Inventors: 申忠均
Original assignee: WENDENG KTS ELECTRONIC CO Ltd
Current assignee: WENDENG KTS ELECTRONIC CO Ltd
Priority date: 2005-11-25
Filing date: 2005-11-25
Publication date: 2006-12-06
Anticipated expiration: 2015-11-25

Abstract

An aluminium heating film of the utility model is coated with a Feilin forming aluminum foil on an insulator PET. A circuit formed by continuous lines is printed by printing ink, the left and the right parts of both ends of the circuit are parallel and folded in a returning mode, the upper and the lower parts of the middle part of the circuit are parallel and folded in a returning mode, and conductive circuits which are printed are protected. The aluminum foil part which is not coated with corrosive printing ink is removed by corrosive via chemical reaction, the printing ink and corrosive used for corrosion are cleaned by sodium hydroxide solution, etc., and then, the surface of each conductive line is printed with carbon fluid to form a circuit layer, and the lines in parallel are connected via parallel terminals. An adhesive agent layer which is formed above an insulating base body and the carbon fluid is attached with leaving type paper. Compared with the old heating film product, the utility model has almost no deviation of temperature, heating generation is uniform, and heating effect is good, and simultaneously, manufacturing cost is effectively reduced, production cost is low, and production process is simple. The utility model is used for rear-view mirrors of an automobile, mirrors in a bath room, etc., ice, frost and fog can be removed in short time, and effect is good.

Description

A kind of aluminum heating film

Affiliated technical field

The present invention relates to a kind of aluminum heating film, it is used in automobile rearview mirror, bathroom mirror etc. can remove the frost mist in the short time.

Background technology

Before this, United States Patent (USP) the 3rd, 887 is arranged, No. 788, the 3rd, 790, No. 748, the 3rd, 781, No. 562, the 3rd, 757, No. 087, the 5th, 446, No. 576, the 4th, 410, No. 790, the 4th, 942, No. 286, the 5th, 015, No. 824, the 4th, 017, No. 715, the 4th, 304, No. 987, the 4th, 330, No. 703, the 2nd, 559, No. 077, the 2nd, 978, No. 665, the 3rd, 243, No. 753, the 3rd, 351, No. 882, the 3rd, 412, No. 358, the 4th, 034, No. 207, the 4th, 777, No. 351, the 4th, 761, No. 541, the 4th, 857, No. 711, the 4th, 628, No. 187, the 5th, 440, No. 425, the 5th, 155, No. 334, the 3rd, 900, No. 654, the 3rd, 848, No. 144, also have Japanese patent gazette 2-162143 number in addition, 8-64352 number, 6-176857 number, 7-99083 number, 3-261090 number, 55-95203 number and utility model communique 61-84063 number, 59-40147 number, wait for 3-67904 number similar technique to utilize electrode to reach heats.

All do not generate heat in the above-mentioned patented technology there to be the PTC resistive element directly to produce by current and power supply.The most reduction resistance while, the electric current increase exists its temperature to be not easy to control and electric current uneven shortcoming of the heating at each position in transmission course.And most of circuit line that electrode and resistance form is to get on by the mixture printing that metal dust such as silver and resin are in harmonious proportion, and carbon element powder and resin are in harmonious proportion and after the carbon liquid printing that forms, electrode generates heat on resistive element after can reducing electric current.For the heat that can make heating film is passed on uniformly, therefore become broach shape or resistive element all to print electrode design.For improving the heat transfer and the heat efficiency, printing carbon liquid more in the above after the corrosion printing on the specific circuit of insulated substrate.The part printing in remaining space of when printing corrosion is in harmonious proportion the liquid that forms by metal dust such as silver and resin, though with silver is conductor, conductivity is fine, and electric conductivity weakens after the mediation of metal dust resin forms printing ink, make its manufacturing engineering complexity, development cost are very high.Therefore, need the new heating film of exploitation.

Summary of the invention

The objective of the invention is to solve the deficiency of above-mentioned technology; by research is to replace with aluminium; on the PET material, coat the film of aluminium; protect circuitry lines with corrosion printing ink; remove with the part that corrosive agent will not coated corrosion printing ink by chemical reaction, formed circuitry shapes is type makes its heating all around more even.Then at its surface printing carbon liquid, and form circuit layer, the aluminum heating film that the circuit of parallel connection is coupled together by splicing ear.

The present invention solves the problems of the technologies described above the technical scheme of being taked: a kind of aluminum heating film; on insulator PET, coat the film and form aluminium foil; with the middle formed circuit of continuous lines of parallel inflection up and down of the parallel inflection in the corrosion left and right sides, ink printing two ends; the conducting wire of protection printing; partly remove with the aluminium foil that corrosive agent will not coated corrosion printing ink by chemical reaction; printing ink and corrosive agent with cleaning corrosion usefulness such as sodium hydroxide solutions; form circuit layer at its surface printing carbon liquid then; connect by parallel terminal that circuit with parallel connection couples together, form adhesive layer at insulating body with above the carbon liquid and adhere to release liners.

Heating film of the present invention was compared the deviation that does not almost have temperature with former heating film, heating evenly, heating effect is good, simultaneously can effectively reduce manufacturing cost, and manufacturing expense is cheap, manufacturing process is simple, is used for automobile rearview mirror, bathroom mirror etc. and can removes ice, frost, mist at short notice good effect is arranged.

Description of drawings

Describe the present invention by embodiment below in conjunction with accompanying drawing.

Fig. 1 is a structural plan of the present invention schematic diagram.

Fig. 2 is a heating film profile of the present invention.

Fig. 3 is the work sheet that state is made in aluminum heating film corrosion of the present invention.

Mark among the figure: (1) insulated substrate, (2) insulator, (3) aluminium foil, (4) carbon liquid, (5) terminal, (6) adhered layer, (7) release liners, (8) corrosion printing.

Embodiment

It below is detailed description for aluminum heating film of the present invention.

Shown in Figure 3 as Fig. 1 Fig. 2; on insulated substrate, the film is coated formation insulator (2) and aluminium foil (3) layer; make definite shape size (Fig. 2 A); with the middle formed circuit of continuous lines of parallel inflection up and down of the parallel inflection in corrosion ink printing (8) left and right sides, two ends; perhaps corrode the stable conductive wire body that printing ink produces with UV; be heated after being completed for printing or with UV stove drying (Fig. 2 B); the conducting wire of protection printing; then; chemical raw material with corrosive agent acidity; do not coat the part of corrosion printing ink with nozzle cleaning aluminium foil (3); except the part of corrosion printing ink protection all the other all be left out (Fig. 2 C); water cleans again; remove corrosion printing ink salt water dope; NaOH dope and water with 1-3% cleans the back oven dry for example; the aluminium conductor wire (3) (Fig. 2 D) that will form on the remaining insulator (2); to dry behind the printing PTC carbon liquid on the above-mentioned aluminium conductor wire; set pin for current transmission terminal (5) (5 '); electrode is because of carbon liquid separated into two parts; to connect into state in parallel; promptly manufacture heating film (Fig. 2 E), top again one one-tenth double faced adhesive tape or the alite paste of pasting used release liners attached to the surface then after above-mentioned carbon liquid layer was completed for printing.

Heating film circuitry lines of the present invention can manufacture and design according to actual needs, and the part of the aluminium circuitry lines of corrosive aluminum foil formation and Fig. 1 can set the electrode longest distances with two pairs of pin for current transmission terminal in two back gauges on the aluminum heating film of big specification on the other hand.

Below describe in detail for example.But this is unrestricted for example.

The product of market sale is on the film aluminium foil vacuum to be pasted the insulating trip that forms (aluminum foil thickness 3 μ m, sheet thickness 150 μ m) utilize corrosion circuitry lines that ink printing forms, 60 ℃ of heating, dryings after 20 minutes with spraying 5% aqueous hydrochloric acid solution to all corroding except corrosion ink printing circuitry lines is, peel off.After water cleans again with 2% sodium hydrate aqueous solution cleaning.

To the carbon liquid simple declaration of resistive element, the carbon element that carbon liquid is used is the control electric conduction quantity.Its thermal conducting rate is between 37.7*10-3deg.cm.sec, more than the Powdered CSP of the Japanese carbon element on market, used, CP, this carbon element of P5 (above all products) is that conductivity is similar, be fit to its use amount in order to regulate insulation property, their use amount is that the weight of getting the weight of resin 100g and getting the 10-50g that carbon element uses is allocated.Change with this carbon liquid resin temperature very little, moisture-sensitive not.

Resin and carbon element are in harmonious proportion and manufacture carbon liquid, print the thickness of 10 μ m in the above on the aluminum film of data, and Yin Shua carbon liquid layer (4) and aluminium foil (3) form electrode like this.Top again one one-tenth double faced adhesive tape or the alite paste of pasting used release liners attached to the surface then after the carbon liquid layer was completed for printing.(5 ') couple together (Fig. 1) with the electrode (3) of aluminium foil with terminal (5).Aluminum heating film of the present invention, to automobile rearview mirror, bathroom mirror etc., removal frost, ice, mist have good effect at short notice.

Claims

1; a kind of aluminum heating film; it is characterized in that on insulator PET, coating the film and form aluminium foil; with the middle formed circuit of continuous lines of parallel inflection up and down of the parallel inflection in the corrosion left and right sides, ink printing two ends; the conducting wire of protection printing; partly remove with the aluminium foil that corrosive agent will not coated corrosion printing ink by chemical reaction; printing ink and corrosive agent with cleaning corrosion usefulness such as sodium hydroxide solutions; form circuit layer at its surface printing carbon liquid then; connect by parallel terminal that circuit with parallel connection couples together, form adhesive layer at insulating body with above the carbon liquid and adhere to release liners.