CN102104999B - Far infrared heating plate and manufacturing method thereof - Google Patents

Abstract

The invention discloses a far infrared heating plate and a manufacturing method thereof. The far infrared heating plate comprises an aluminium substrate, a first polyimide thin film layer, infrared slurry, a copper foil conduction band, a second polyimide thin film layer and the like. The method provided by the method comprises the following steps of: firstly, coating the first high-temperature resistant polyimide thin film layer on the aluminium substrate, printing the infrared slurry on the coated aluminium substrate, and pasting the copper foil conduction band pasted with conductive dual-sided adhesive on the infrared slurry of the aluminium substrate; secondly, coating the second polyimide thin film layer with good insulation performance; finally drilling a welding hole for welding a lead, and pasting an insulation cap to obtain the far infrared heating plate. After the far infrared heating plate is electrified, the copper coil conduction band and the infrared slurry have uniform contact and good conductive effect and are safe and reliable. The heating plate has the advantages of rapidness for raising temperature, uniform heat conduction, long service life and simple structure. The manufacturing method for the far infrared heating plate has simple process, is easy to carry out and can be applied indoors in quantity as heating layers of wallboards and floors to achieve good greenhouse effect; furthermore, the far infrared heating plate can be widely applied to the apparatuses in a dry steam room.

Description

A kind of far-infrared heating plate and its manufacturing method

technical field

The invention relates to the field of far-infrared heating plates, in particular to a far-infrared heating plate and a manufacturing method thereof.

Background technique

The traditional far-infrared heating plate is made of ceramic materials, which has the disadvantages of low power, poor temperature uniformity, and easy dust accumulation, so it cannot be used in the production process of advanced precision products. The other is a large-scale heating plate, which is made of aluminum alloy and cast into one body with a tubular electric heating tube, which has the disadvantages of poor temperature uniformity, high cost, and difficult maintenance. In terms of heat preservation and heating, manufacturers of electric heating plates and heaters have begun to use carbon fiber materials to make electric heating plates. The imaginary structure is simple: the carbon fiber material is sandwiched between the upper and lower layers of insulating plates and then connected to the power supply. However, the actual production Products, after the power is not heated or after a short period of heating, the board will be broken down and scrapped, and it is even more difficult to produce products of various power models according to needs. The reason is that when the carbon fiber material heats up after being energized, a gap is formed between the carbon fiber paper and the conductive tape, poor contact, an arc is generated, and the heat is released rapidly, which causes the plate covering the joint between the fiber paper and the electrode to burn.

Contents of the invention

The object of the present invention is to provide a far-infrared heating plate and its manufacturing method to solve the problems of low power, poor temperature uniformity and easy breakdown of the far-infrared heating plate in the prior art.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A kind of far-infrared heating plate, it is characterized in that: comprise aluminum base plate, the polyimide film of the first layer is attached on the top surface of described aluminum base plate, and the polyimide film top surface of described first layer is printed with a plurality of line shapes The infrared paste also includes a copper foil conductive tape and a second layer of polyimide film, the copper foil conductive tape is attached to the infrared paste to electrically connect each infrared paste, and the second layer of polyimide film The imide film covers the top surface of the first layer of polyimide film and covers the copper foil conduction strip, and the copper foil conduction strip is electrically connected with the drawn wires.

A kind of far-infrared heating plate is characterized in that: the second layer of polyimide film has a welding hole, the welding hole is provided with an insulating cap covering the welding hole, and one end of the wire is fixed by soldering In the soldering hole and electrically connected to the copper foil conductive strip through soldering tin, the other end of the wire is drawn out after passing through the insulating cap.

The above-mentioned far-infrared heating plate is characterized in that a plurality of far-infrared heating plates are connected in parallel to form a parallel structure.

The above-mentioned far-infrared heating plate is characterized in that: the first layer of polyimide film is adhered to the top surface of the aluminum substrate through silica gel coated on the top surface of the aluminum substrate.

The above-mentioned far-infrared heating plate is characterized in that: the copper foil conduction tape is pasted on the infrared paste by conductive double-sided adhesive to electrically connect each strip of infrared paste.

A method of manufacturing an infrared heating plate, characterized in that: comprising the following steps:

(1) Evenly coat a layer of silica gel on the top surface of the aluminum substrate, and use a laminating machine to coat the first layer of polyimide film on the top surface of the aluminum substrate, and the first layer of polyimide film is adhered to the Aluminum substrate top surface;

(2) Use 783 solvent to adjust the viscosity of the infrared paste to 40~60 (S), and then use a screen printing machine to print multiple lines of the infrared paste on the top surface of the first layer of polyimide film on the aluminum substrate After the printing is completed, use a tunnel furnace to dry the aluminum substrate. The temperature of the tunnel furnace is set as follows: the three temperature zones from the inlet to the outlet are 170°C, 175°C, and 180°C, and the speed of the tunnel furnace is set to medium and low speed. ;

(3) After completing step (2), paste the copper foil conductive tape on the infrared paste through conductive double-sided adhesive to electrically connect each infrared paste, and then use a laminating machine to paste the copper foil conductive tape on the infrared paste. The first layer of polyimide film is covered with the second layer of polyimide film;

(4) Process a welding hole on the second layer of polyimide film, and solder the wire at the position of the welding hole; attach the bowl-shaped insulating cap evenly coated with AB glue on the inner edge to the position of the welding hole The outer side and cover the welding hole, one end of the wire passes through the insulating cap, the other end of the wire is electrically connected to the copper foil conductive strip through solder, and a power plug is welded on the end of the wire passing through the insulating cap, that is, Get the far infrared heating plate.

The above-mentioned manufacturing method of an infrared heating plate is characterized in that: when the second layer of polyimide film is covered in the step (3), the laminating machine is set in a heat-covering state, and the temperature is controlled at 40°C to between 45°C.

The wire of the present invention is connected to a power plug, and can be used by connecting the power plug to 220V alternating current, and can evenly heat up to about 150 degrees, and can also be connected to a temperature controller through a wire to control the heating temperature.

The invention is composed of aluminum substrate, polyimide film, infrared paste, copper foil conduction tape, solder hole, insulating cap, wire, etc. A layer of silica gel, copper The foil conductive tape is attached to the linear infrared paste by conductive double-sided adhesive.

Multiple infrared heating plates of the present invention can be connected in parallel. An insulating cap is pasted on the outer side of the welding hole, the wire is led out through the opening of the insulating cap, and a power plug is welded on the other end of the wire. Connect the power plug of the infrared heating plate to 220V AC, then it can be used, and the temperature can be evenly raised to about 150 degrees, and the heating temperature can also be controlled by connecting a temperature controller.

In the device of the present invention, the aluminum base plate used has a good heat dissipation effect, and the infrared paste used can radiate far infrared rays which are beneficial to the human body after being electrified. The polyimide film used has good high temperature resistance and insulation properties.

In the manufacturing method of the far-infrared heating plate of the present invention, a layer of silica gel is evenly coated on the cut aluminum substrate. Imine film; use 783 solvent to adjust the viscosity of the infrared paste to 40~60 (S), use a screen printing machine to print the infrared paste on the coated aluminum substrate, and dry the surface of the aluminum substrate after the printing is completed, and use a tunnel furnace The temperature setting is: the three temperature zones from the inlet to the outlet are 170°C, 175°C, and 180°C respectively, and the speed of the tunnel furnace is set to medium and low speed; after drying, the copper foil conductive tape is pasted on the On the infrared paste of the aluminum substrate, and then use a laminating machine to cover the polyimide film on the copper foil guide strip; remove the surface polyimide film from the solder hole position of the aluminum substrate, and plate the solder hole position of the aluminum substrate Tin, soldering wires; paste the bowl-shaped insulating cap evenly coated with AB glue on the inner edge to the outside of the welding hole position, the wires are connected to the copper foil conduction layer through soldering, and the power plug is welded on the other end of the wires. Promptly make this far-infrared heating plate. the

In the method of the present invention, when laminating the aluminum substrate and the aluminum substrate pasted with the copper foil guide tape, the laminating machine is set in a hot-coating state, and the temperature is controlled between 40°C and 45°C. Silica gel is used for bonding between polyimide film and aluminum substrate, and copper foil conductive tape is bonded to infrared paste through conductive double-sided adhesive.

Compared with the prior art, the beneficial effects of the present invention are:

First, in the device of the present invention, the aluminum substrate used has a good heat dissipation effect, and the infrared paste used can radiate far infrared rays beneficial to the human body after being energized, which is beneficial to human health. The polyimide film used has good high temperature resistance and insulation properties. Multiple heating plates can be connected in parallel to meet the heating needs of larger spaces. Connect the 220V AC power through the power plug, and the heating plate can be used, and the temperature can be evenly raised to about 150 degrees, and the heating temperature can also be controlled by connecting the temperature controller.

Second, in the method of the present invention, the copper foil conduction tape is fixed on the infrared slurry through conductive double-sided adhesive, which has uniform contact, good conductive effect, safety and reliability, fast heating and uniform heat conduction, long service life and simple structure. The heating plate has a simple manufacturing process and is easy to put into production. It can be widely used indoors as a heating layer for wall panels and floors to achieve a good greenhouse effect, and can also be widely used in equipment such as dry steaming rooms.

Description of drawings

Fig. 1 is a schematic exploded view of the structure of the present invention.

Detailed ways

As shown in Figure 1, a kind of far-infrared heating plate comprises aluminum substrate 1, and the first layer polyimide film 2-1 is attached on the top surface of aluminum substrate 1, and the top surface of first layer polyimide film 2-1 There are multiple lines of infrared paste 3 printed, and copper foil conductive tape 4, the second layer of polyimide film 2-2, copper foil conductive tape 4 is pasted on the infrared paste 3 to electrically connect each infrared Slurry 3, the second layer of polyimide film 2-2 is covered on the top surface of the first layer of polyimide film 2-1 and covers the copper foil conductive strip 4, and the copper foil conductive strip 4 is electrically connected to the Wire 7.

The second layer of polyimide film 2-2 has a welding hole 5, the welding hole 5 is provided with an insulating cap 6 covering the welding hole 5, and one end of the wire 7 is fixed in the welding hole 5 by soldering and copper The foil conductor strip 4 is electrically connected, and the other end of the wire 7 passes through the insulating cap 6 and then leads out. A plurality of far-infrared heating plates are connected in parallel to form a parallel structure.

The first layer of polyimide film 2-1 is adhered to the top surface of the aluminum substrate 1 through the silica gel coated on the top surface of the aluminum substrate 1 . The copper foil conductive tape 4 is pasted on the infrared paste 3 through conductive double-sided adhesive tape to electrically connect each strip of infrared paste 3 .

A method for manufacturing a far-infrared heating plate, comprising the following steps: flatten and cut out an aluminum substrate 1 of a certain specification by flattening the aluminum substrate plate or sheet on a positioning card of the correct size, and place the aluminum substrate 1 on the cut aluminum substrate 1 Coat a layer of silica gel evenly; select the first layer of polyimide film of appropriate length and thickness 2-1 and install it on the laminating machine according to the mechanical operation regulations. Between 45°C, use the guide sheet to straighten the base film, cover the film at a speed of 5 to 6, and prohibit overspeed work; observe whether the coated aluminum substrate 1 has any appearance problems such as damage, stains, jagged edges, etc., and set up a semi-automatic screen printing machine , using 783 solvent to adjust the viscosity of the infrared paste 3 to 40~60 (S), and use a semi-automatic screen printing machine to print the infrared paste 3 on the coated substrate; after the printing is completed, the surface of the aluminum substrate 1 is dried and cured Drying; when drying the surface, the temperature of the tunnel furnace is set as follows: the three temperature zones from the inlet to the outlet are 170°C, 175°C, and 180°C respectively, and the speed of the tunnel furnace is set to medium and low speed; after drying, according to the requirements of the drawing Cut the copper foil conduction tape 4 according to the length and width of the copper foil conduction tape 4, and paste the conductive double-sided adhesive tape on the processed copper foil conduction tape 4; paste the copper foil conduction tape 4 with one side of the conductive double-sided adhesive on the aluminum The infrared paste 3 on the substrate 1 is scraped firmly with a scraper to ensure good contact. Use a laminating machine to cover the second layer of polyimide film 2-2 with good insulation performance on the copper foil guide strip 4; use a special tool to gently scratch the position of the solder hole 5 on the aluminum substrate 1, and remove the surface Polyimide film, tinned at the position of the welding hole 5, the solder joints are required to be full without burrs, solder the wire 7 to the position of the welding hole 5, pay attention to the welding direction; evenly apply the bowl-shaped insulating cap with AB glue on the inner edge 6. Paste it on the outside of the welding hole 5 quickly and accurately. After the AB glue is cured, drop an appropriate amount of silica gel into the opening of the insulating cap 6. After the silica gel is cured, weld the power plug 8 on the other end of the wire 7 to obtain a The far infrared heating plate. Connect the 220V alternating current through the power plug 8, and the heating plate can be used, and the temperature can be evenly raised to about 150 degrees, and the heating temperature can also be controlled by connecting the temperature controller.

Claims (2)

1. a kind of manufacture method of far-infrared heating plate is characterized in that: comprise the following steps: (1) Evenly coat a layer of silica gel on the top surface of the aluminum substrate, and use a laminating machine to coat the first layer of polyimide film on the top surface of the aluminum substrate, and the first layer of polyimide film is adhered to the Aluminum substrate top surface; (2) Use 783 solvent to adjust the viscosity of the infrared paste to 40~60Pa.s, and then use a screen printing machine to print multiple lines of the infrared paste on the top surface of the first layer of polyimide film on the aluminum substrate After the printing is completed, use a tunnel furnace to dry the aluminum substrate. The temperature of the tunnel furnace is set as follows: the three temperature zones from the inlet to the outlet are 170°C, 175°C, and 180°C, and the speed of the tunnel furnace is set to medium and low speeds; (3) After completing step (2), paste the copper foil conductive tape on the infrared paste through conductive double-sided adhesive to electrically connect each infrared paste, and then use a laminating machine to paste the copper foil conductive tape on the infrared paste. The first layer of polyimide film is covered with the second layer of polyimide film; (4) Process a welding hole on the second layer of polyimide film, and solder the wire at the position of the welding hole; attach the bowl-shaped insulating cap evenly coated with AB glue on the inner edge to the position of the welding hole The outer side and cover the welding hole, one end of the wire passes through the insulating cap, the other end of the wire is electrically connected to the copper foil conductive strip through solder, and a power plug is welded on the end of the wire passing through the insulating cap, that is, Get the far infrared heating plate. 2. The manufacturing method of a far-infrared heating plate according to claim 1, characterized in that: when the second layer of polyimide film is covered in the step (3), the laminating machine is set in a heat-covering state , the temperature is controlled between 40°C and 45°C.

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