WO2017000598A1

WO2017000598A1 - Thick film heater and thick film heating fabric applying the thick film heater

Info

Publication number: WO2017000598A1
Application number: PCT/CN2016/077445
Authority: WO
Inventors: 黄伟聪
Original assignee: 广东天物新材料科技有限公司
Priority date: 2015-06-30
Filing date: 2016-03-26
Publication date: 2017-01-05
Also published as: CN104955181B; CN104955181A

Abstract

Provided are a thick film heater and a thick film heating fabric. The thick film heater comprises two first flexible substrate layers, where a thick film heating circuit is attached onto one of the first flexible substrate layer, while the other first flexible substrate layer covers the thick film heating circuit and is bonded via a hot pressing process into an integral body with the first flexible substrate on which the thick film heating circuit is attached, the thick film heating circuit is provided with a wiring terminal, the wiring terminal is connected to a flexible thin foil circuit, one extremity of the thin foil terminal is connected to the wiring terminal, and a part of the thin foil circuit arranged on the thick film heater is bonded and packaged between the two first flexible substrate layers via the hot pressing process. The thick film heating fabric comprises a fabric layer. The thick film heater is bonded with the fabric layer into an integral body via an adhesive material. A power supply circuit of the present invention employs the thin foil circuit, and the part thereof arranged on the thick film heater can be sealed between the two layers of flexible substrates in the hot pressing process of the thick film heater, thus implementing automated production.

Description

Thick film heating element and thick film heating cloth using the same

Technical field

The invention belongs to the technical field of thick film heating, and in particular relates to a thick film heating body and a thick film heating cloth using the thick film heating body.

Background technique

In order to increase the effect of keeping warm and keep warm, in the prior art, there is a technical solution for putting a heating element into a garment to make a heatable and heat-insulating laundry.

For example, common heating stickers (warm babies) use the principle that chemical energy is converted into heat energy, and the cloth coated with chemical materials is added to the clothes to generate heat, which has a long heating time (can be 130cm ² , 50 to 60 degrees Under the conditions of 10 to 12 hours), the price is cheap, but also has the temperature is uncontrollable, easy to overheat, only one-time use, pollution to the environment, including chemical catalysts and other defects.

For example, the carbon fiber heating element is implanted into the clothes, and the carbon fiber has the advantages of good flexibility and can be woven into various shapes, and has the advantages of being washable, waterproof, DC power supply, no noise, and simple production process for the heating body such as clothes. Features. However, carbon fiber should not be exposed to the air, and exposure to air for 50 hours would increase the resistance by a factor of two. Moreover, the carbon fiber heating body itself generates static electricity by friction, thereby affecting clothes. In addition, the temperature control of the carbon fiber heating element is controlled by a power control method by changing the voltage on the carbon fiber heating element, which often causes power loss and affects heating and holding time.

The application of thick film heating materials based on flexible substrates is a new trend in the development of the industry. The existing thick film heating materials, thick film heating circuits are arranged between two layers of flexible substrate layers, and are hot pressed The combination is integrated, but the thick wire heating circuit and the control switch and the power supply are connected by conventional wires. In the hot pressing process, since the wire is bulky and cannot be bent with the thick film heating circuit, it cannot be directly Sealed between two layers of flexible substrate by hot pressing. The wire exposed outside the thick film heating material is easily pulled off by the thick film heating circuit; on the other hand, the terminal of the wire and the thick film heating circuit is connected by the rivet, and the sealing of the connection portion cannot be ensured, and the connection is made after a long time of use. The part is easily oxidized, causing poor contact and affecting the service life of the thick film heating material. When the thick film heating material is combined with the cloth, the wire needs to be fixed on the cloth by sewing, and the sewing method is difficult to realize automatic production, and the quality is difficult to ensure. In addition, the resistance of the wire is larger than that of the thick film heating circuit, which causes a large amount of heat to be generated in the wire, resulting in an increase in power consumption.

The thick film circuit is a circuit formed by sintering a slurry at a high temperature on a flexible substrate layer capable of withstanding high temperatures; when a material having a positive temperature effect is added to the slurry, the thick film circuit has a PTC effect, making the thickness thick. The membrane circuit has the characteristics of temperature control.

Summary of the invention

The object of the present invention is to overcome the deficiencies of the prior art and provide a thick film heating element. Compared with the prior art, the power supply line of the present invention adopts a flexible thin foil circuit, and the portion on the thick film heating element can be thick. The film heating element thermocompression bonding process is sealed between two flexible substrates, and can be automated.

In order to achieve the above object, the present invention adopts the following technical solutions:

The thick film heating element comprises two layers of the first flexible substrate layer, wherein a layer of the first flexible substrate layer is attached with a thick film heating circuit arranged in a folded or tiling manner, and another layer of the first flexible substrate layer Covering the thick film heating circuit and bonding into a first flexible substrate layer to which a thick film heating circuit is attached by a hot pressing process, the thick film heating circuit is provided with a connection terminal, and the connection terminal is connected with a power supply line The power supply line is a flexible thin foil circuit, one end of the flexible thin foil circuit is connected to the connection terminal, and the portion of the flexible thin foil circuit located on the thick film heating body is bonded and packaged by the above-mentioned hot pressing process. The layers are between the first flexible substrate layers.

Compared with the prior art, the power supply circuit of the present invention adopts a flexible thin foil circuit, and the flexible thin foil circuit has the advantages of being light and thin, flexible, and capable of design according to wiring requirements, and the portion of the flexible thin foil circuit on the thick film heating element It can be sealed between two layers of the first flexible substrate layer by thermocompression bonding with two layers of the first flexible substrate layer, and has good sealing property, and is not easy to tear the flexible thin foil circuit and the thick film heating circuit when subjected to force. The connecting portion; since the flexible thin foil circuit can be connected to the attachment body such as cloth by bonding, automatic production can be realized; the flexible thin foil circuit has small electric resistance and generates less heat, thereby saving energy consumption.

Preferably, the flexible thin foil circuit is thermally encapsulated by two layers of the second flexible substrate layer at a portion outside the thick film heating element. The utility model can protect the flexible thin foil circuit from being located outside the thick film heating body, and also can make the second flexible substrate layer be bonded to the attachment body such as cloth by hot pressing to realize automatic production.

As a preferred solution, the two layers of the second flexible substrate layer are respectively integrated with the corresponding first flexible substrate layer. Alternatively, the two layers of the second flexible substrate layer are respectively bonded to the corresponding first flexible substrate layer by a hot pressing process. The function is that the flexible thin foil circuit is not easily damaged by the force outside the thick film heating body, so that the flexible thin foil circuit has a longer service life.

Preferably, one end of the flexible thin foil circuit is connected to the terminal by soldering. The advantage of using solder is that the connection portion of the flexible thin foil circuit and the terminal is small, and the thermocompression bonding of the two first flexible substrate layers is not affected, and the first flexible substrate layer is not damaged.

Preferably, a control circuit board is further included, and the other end of the flexible thin foil circuit is connected to the control circuit board. The other end of the flexible thin foil circuit is soldered or plugged and connected to the control circuit board. The function of plugging and unplugging is to facilitate the wiring of the flexible thin foil circuit and the control circuit board.

Preferably, a thick film temperature sensing circuit is disposed along the thick film heating circuit, and the thick film temperature sensing circuit is provided with a temperature sensing terminal. The function is to arrange a thick film temperature sensing circuit with a PTC effect in the vicinity of the thick film heating circuit, so that the thick film temperature sensing circuit can accurately detect the heating temperature of the thick film heating circuit and convert it into a corresponding resistance change, thereby judging the temperature and Adjust the output power to ensure the reasonable use of the power supply and extend the battery life. By connecting the temperature sensing terminal to the control board In addition, according to the heating temperature of the thick film heating circuit and the preset temperature, the output power can be adjusted to achieve intelligent temperature control.

The present invention also provides a heat-generating fabric to which the above-described thick film heat generating body is applied, comprising at least one cloth layer which is integrally bonded to the cloth layer by an adhesive material. The heating fabric can be a cloth of general significance. The thick film heating body can be combined with the cloth to make electric heating products such as electric heating clothes and electric blankets; the heating cloth can also be finished products such as clothes and blanket shoes.

Preferably, the adhesive material is a hot melt adhesive or a wire-like hot melt adhesive, and the adhesive material is melted by heating to bond the thick film heat generating body and the cloth layer into one body. Its function is to facilitate the bonding of the thick film heating body and the cloth layer, and can realize automatic production.

Preferably, the cloth layer is provided with two layers, and the two cloth layers are integrally bonded to the thick film heat generating body by the adhesive material. Its function is to protect the thick film heating element and make the appearance of the product more beautiful.

DRAWINGS

Figure 1 is an exploded view of the thick film heating fabric of the present invention;

Figure 2 is an exploded view of the thick film heating fabric of the present invention 2;

Figure 3 is a schematic illustration of a mold for making hot melt micelles of the present invention.

detailed description

The technical solution of the present invention will be described below with reference to the accompanying drawings:

Embodiment 1 : Referring to FIG. 1 and FIG. 2, the thick film heating element of the present invention comprises two layers of the first flexible substrate layer 1 on which a layer of the first flexible substrate layer 1 is attached in a folded or tiling manner. The thick film heating circuit 2 is disposed, and the other first flexible substrate layer 1 covers the thick film heating circuit 2 and is bonded to the first flexible substrate layer 1 to which the thick film heating circuit 2 is attached by a hot pressing process. The thick film heating circuit 2 is provided with a connection terminal 201, and the connection terminal 201 is connected with a flexible thin foil circuit 4, and one end 401 of the flexible thin foil circuit 4 is connected to the connection terminal 201, and the flexible thin foil circuit 4 is located on the thick film heating element. The above hot pressing process is adhesively packaged between two layers of the first flexible substrate layer 1. The thin foil of the present invention is preferably a low-resistance thin foil circuit such as a copper foil or a silver foil.

Compared with the prior art, the power supply circuit of the present invention adopts a flexible thin foil circuit 4, and the flexible thin foil circuit 4 has the advantages of being light and thin, flexible, and capable of being designed according to wiring requirements, and the flexible thin foil circuit 4 is in a thick film heating body. The upper portion can be sealed between the two first flexible substrate layers 1 by thermocompression bonding with the two first flexible substrate layers 1, and the sealing property is good, and the flexible thin foil circuit is not easily broken when subjected to force. 4, the connection portion of the thick film heating circuit 2; since the flexible thin foil circuit 4 can be connected to the attachment body such as cloth by bonding, automatic production can be realized; the flexible thin foil circuit 4 has small electric resistance and generates less heat, and can Save energy.

As a preferred solution, a flexible substrate connecting portion 6 is also provided. The one end 401 of the flexible thin foil circuit 4 connected to the connecting terminal 201 is attached to the flexible substrate connecting portion 6, and the flexible substrate connecting portion 6 is subjected to a hot pressing process. The first flexible substrate layer 1 is bonded, and one end 401 of the flexible thin foil circuit 4 is kept connected to the terminal 201, by this means One end 401 of the flexible thin foil circuit 4 is connected to the terminal 201, and has a simple structure and convenient operation, and can be automatically generated.

Referring to Fig. 2, as a preferred embodiment, the flexible thin foil circuit 4 is thermally encapsulated by two layers of the second flexible substrate layer 8 at a portion outside the thick film heating element. The function of the flexible thin foil circuit 4 is to protect the outer surface of the thick film heating element, and the second flexible substrate layer 8 can be bonded to the attachment body such as cloth by hot pressing to realize automatic production.

As a preferred embodiment, the two layers of the second flexible substrate 8 are respectively integrated with the corresponding first flexible substrate layer 1. Alternatively, the two second flexible substrate layers 8 are respectively bonded to the corresponding first flexible substrate layer 1 by a hot pressing process. Its function is that the flexible thin foil circuit 4 is not easily damaged by the force of the outer portion of the thick film heating body, so that the service life of the flexible thin foil circuit 4 is longer.

As a preferred solution, one end 401 of the flexible thin foil circuit 4 is connected to the terminal 201 by soldering. The advantage of using solder is that the connection portion of the flexible thin foil circuit 4 and the terminal 201 is small, and the thermocompression bonding of the two first flexible substrate layers 1 is not affected, and the first flexible substrate layer 1 is not damaged. .

As a preferred solution, a control circuit board 5 is also included. The other end 402 of the flexible thin foil circuit 4 is connected to the control circuit board 5, and the control circuit board 5 is provided with a power terminal 501. More preferably, the other end 402 of the flexible thin foil circuit 4 is plugged and connected to the control circuit board 5. Its function is to facilitate the wiring of the flexible thin foil circuit 4 and the control circuit board 5. In other embodiments, the other end 402 of the flexible thin foil circuit 4 and the control circuit board 5 may be plugged and connected.

As a preferred embodiment, a thick film temperature sensing circuit 3 is disposed along the thick film heating circuit 2, and the thick film temperature sensing circuit 3 is provided with a temperature sensing terminal 301. The function is to arrange the thick film temperature sensing circuit 3 having the PTC effect in the vicinity of the thick film heating circuit 2, so that the thick film temperature sensing circuit 3 can accurately detect the heat generation temperature of the thick film heating circuit 2 and convert it into a corresponding resistance change. Thereby determining the temperature and adjusting the output power to ensure the reasonable use of the power supply and prolong the battery life. By connecting the temperature sensing terminal 301 to the control circuit board 5, it is also possible to adjust the output power according to the heating temperature of the thick film heating circuit 2 and the preset temperature to realize intelligent temperature control.

Embodiment 2: Referring to FIG. 1 and FIG. 2, this embodiment provides a heating fabric for applying the thick film heating element of the embodiment, which comprises at least one cloth layer 7, and the thick film heating body passes through the adhesion material 9 and the cloth layer 7. Bonded into one. The heating fabric can be a cloth of general significance. The thick film heating body can be combined with the cloth to make electric heating products such as electric heating clothes and electric blankets; the heating cloth can also be finished products such as clothes and blanket shoes.

As a preferred embodiment, the adhesive material 9 is a hot melt adhesive or a wire-like hot melt adhesive, and the adhesive material 9 is melted by heating to bond the thick film heat generating body and the cloth layer 7 integrally. Its function is to facilitate the bonding of the thick film heating body and the cloth layer 7, and can realize automatic production.

As a preferred embodiment, the cloth layer 7 is provided with two layers, and the two cloth layers 7 are bonded to the thick film heat generating body by the adhesive material 9. Its function is to protect the thick film heating element and make the appearance of the product more beautiful.

3 shows a mold for manufacturing the hot-melt rubber particles of the present invention, which comprises a heat-generating substrate 10, and a plurality of hot-melt rubber particles forming holes 1001 are formed on the heat-generating substrate 10, and the number and density of hot-melt rubber particles forming holes 1001 are shown. Set according to the needs of bonding strength. When the hot melt rubber is produced, the hot melt adhesive forms a hole 1001 through the hot melt rubber particles on the high temperature heatable substrate 10 to form a hot melt. The colloidal particles, the molten hot melt colloidal particles, are adhered to the cloth layer 7 after being cooled.

The wire-like hot-melt adhesive can be formed by spraying a hot melt glue onto a cooled platform by a high-pressure gun. After heating the wire-like hot melt adhesive, the two sides are sticky and can adhere to different fabrics. .

Variations and modifications of the above-described embodiments may also be made by those skilled in the art in light of the above disclosure. Therefore, the invention is not limited to the specific embodiments disclosed and described herein, and the modifications and variations of the invention are intended to fall within the scope of the appended claims. In addition, although specific terms are used in the specification, these terms are merely for convenience of description and do not limit the invention.

Claims

The thick film heating element comprises two layers of the first flexible substrate layer, wherein a layer of the first flexible substrate layer is attached with a thick film heating circuit arranged in a folded or tiling manner, and another layer of the first flexible substrate layer Covering the thick film heating circuit and bonding into a first flexible substrate layer to which a thick film heating circuit is attached by a hot pressing process, the thick film heating circuit is provided with a connection terminal, and the connection terminal is connected with a power supply line The power supply line is a flexible thin foil circuit, one end of the flexible thin foil circuit is connected to the terminal, and the portion of the flexible thin foil circuit located on the thick film heating body is adhered by the hot pressing process The package is between two layers of the first flexible substrate layer.
The thick film heating element according to claim 1, wherein the flexible thin foil circuit is thermally encapsulated by two layers of the second flexible substrate layer at a portion outside the thick film heating element.
The thick film heating element according to claim 2, wherein the two layers of the second flexible substrate layer are respectively integrated with the corresponding first flexible substrate layer;

Alternatively, the two layers of the second flexible substrate layer are respectively bonded to the corresponding first flexible substrate layer by a hot pressing process.
The thick film heating element according to claim 1, wherein one end of said flexible thin foil circuit is connected to said terminal by soldering.
A thick film heat generating body according to claim 1, further comprising a control circuit board, the other end of said flexible thin foil circuit being connected to said control circuit board.
The thick film heating element according to claim 5, wherein the other end of the flexible thin foil circuit is soldered or plugged to the control circuit board.
The thick film heating element according to claim 1, wherein a thick film temperature sensing circuit is disposed along said thick film heating circuit, and said thick film temperature sensing circuit is provided with a temperature sensing terminal.
A heat-generating fabric for a thick-film heat generating body according to any one of claims 1 to 7, characterized in that it comprises at least one cloth layer which is integrally bonded to the cloth layer by an adhesive material.
The heat-generating fabric according to claim 8, wherein the adhesive material is a hot melt adhesive or a wire-like hot melt adhesive, and the adhesive material is melted by heating to form a thick film heat generating body and the cloth. The layers are bonded together.
The heating fabric of the film heating element according to claim 8, wherein the cloth layer is provided with two layers, and the two cloth layers are bonded to the thick film heating body through the adhesive material. .