WO2019113850A1

WO2019113850A1 - Heating sheet, preparation method therefor and electronic cigarette

Info

Publication number: WO2019113850A1
Application number: PCT/CN2017/115998
Authority: WO
Inventors: 刘秋明; 向智勇
Original assignee: 惠州市吉瑞科技有限公司深圳分公司
Priority date: 2017-12-13
Filing date: 2017-12-13
Publication date: 2019-06-20

Abstract

Disclosed are a heating sheet (100), a preparation method therefor and an electronic cigarette. The heating sheet (100) comprises a base layer (10), a thermal insulation layer (20) connected to a surface of the base layer (10), a resistance layer (30) connected to the thermal insulation layer (20), and an insulation layer (40) connected to the resistance layer (30). The preparation method for the heating sheet (100) involves providing a base material, a thermal insulation material, a resistance material and an insulation material; cutting the base material into a preset shape to form the base layer (10); connecting the thermal insulation material to the surface of the base layer to form the thermal insulation layer (20); covering the surface of the thermal insulation layer (20) with the resistance material to form the resistance layer (30); and connecting the insulation material to the surface of the resistance layer (30) to form the insulation layer (40). The electronic cigarette comprises a vapor pipe and the heating sheet (100), which is installed inside the vapor pipe. The heating sheet (100) has a high heating efficiency, a low cost and good flexibility, does not easily break off, is easy to mount, contains no lead, and does not have an unpleasant smell.

Description

Heating sheet, preparation method thereof and electronic cigarette

Technical field

The invention relates to the field of electronic heating technology, in particular to a heating sheet, a preparation method thereof and an electronic cigarette.

Background technique

Electronic cigarettes, also known as electronic cigarettes, are mainly used to quit smoking and replace cigarettes. It has the same appearance as a cigarette, a taste similar to that of a cigarette, and even more than the taste of a typical cigarette. It also absorbs smoke and tastes and feels like a cigarette. E-cigarettes do not contain any harmful components such as tar, aerosols, etc. in cigarettes, and are harmless to the user.

Electronic cigarettes require heating or heating to provide heat. The heat generating sheets used in the conventional electronic cigarettes include ceramic heating sheets (MCH, HTCC, LTCC), metal electric heating films, PCT heating elements, and alloy heating sheets. Since the heat generating sheets need to be installed in the cigarette tubes of the electronic cigarette, since the heat generating sheets are insufficient in toughness and are easily broken, the mounting is inconvenient. Moreover, the conventional heating sheet has a relatively large size, low heat generation efficiency, high price, high lead content and odor.

Summary of the invention

Based on this, the present invention provides a heating sheet which has high heat generation efficiency, low cost, good toughness, is not easily broken, is easy to install, and contains no lead and no odor.

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

A heating sheet comprising a base layer, a heat insulation layer connecting the surface of the base layer, a resistance layer connecting the heat insulation layer, and an insulation layer connecting the resistance layer, the insulation layer coating the base layer and the heat insulation layer And the circumference of the resistance layer.

The above heating sheet is composed of a base layer, a heat insulating layer, a resistance layer and an insulating layer, and the base layer can improve the toughness of the heating sheet, so that the entire heating sheet has higher strength; the above layers can be thin, so the size of the entire heating sheet It is also thinner, and its heating efficiency is correspondingly improved; compared with ceramics, metal and other heat-generating sheets, the heating sheet uses relatively inexpensive materials, which reduces the cost of the entire heating sheet; the heating sheet does not use lead-containing materials, so there is no odor, and Suitable for everyday use.

In some of the embodiments, the insulating layer covers the periphery of the base layer, the heat insulating layer, and the resistance layer.

In some of these embodiments, the resistive layer is in a retrofit configuration.

In some of the embodiments, the resistive layer is disposed in a corrugated shape.

In some of the embodiments, the heating sheet includes a body and an insertion end connecting the body, and the insertion end has a size smaller than a size of the body. The end portion has a dimensional change, so that the heating piece can be more conveniently inserted into the tobacco pipe of the electronic cigarette, improving the installation efficiency of the electronic cigarette, and reducing the damage amount of the heating piece in the heating piece.

In some of these embodiments, the insertion end is sharp.

In some of these embodiments, the heater chip has a thickness of less than 0.35 mm.

The invention also adopts the following technical solutions:

A method for preparing a heating sheet, comprising the steps of:

Providing a substrate, a heat insulating material, a resistive material and an insulating material, the substrate forming a base layer;

Attaching the heat insulating material to the surface of the base layer by printing, coating, bonding or sintering to form a heat insulating layer;

Connecting the resistive material to the surface of the heat insulating layer by printing to form a resistive layer to obtain a semi-finished product;

Cutting the semi-finished product into a preset shape;

The insulating material is connected to the surface of the resistive layer of the semi-finished product and the peripheral portion of the base layer, the heat insulating layer and the resistive layer by printing, coating, bonding or sintering to form an insulating layer.

In some of the embodiments, before the semi-finished product is cut and covered with the insulating material, the method further comprises the step of cutting one end of the semi-finished product such that the size of the end portion is smaller than the size of other portions of the semi-finished product.

The invention also adopts the following technical solutions:

An electronic cigarette includes a tobacco pipe and the heating sheet installed in the tobacco pipe.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only the present invention. For some embodiments, those skilled in the art can obtain drawings of other embodiments according to the drawings without any creative work.

1 is a partial cross-sectional structural view of a heater chip according to a preferred embodiment of the present invention;

Figure 2 is a front view showing the structure of the heating sheet of Figure 1;

Fig. 3 is a schematic front view showing the structure of a heating sheet according to another embodiment.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the understanding of the present disclosure will be more fully understood.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention.

The heating sheet according to the present invention is for heating an electronic cigarette.

Referring to FIG. 1 to FIG. 3, a heating sheet 100 according to a preferred embodiment of the present invention is used in an electronic cigarette to heat an electronic cigarette to generate smoke. The heater chip 100 includes a base layer 10, a heat insulation layer 20 that connects the surface of the base layer 10, a resistance layer 30 that connects the heat insulation layer 20, and an insulation layer 40 that connects the resistance layers 30. The heat insulating layer 20 described above is connected to the upper and lower surfaces of the base layer 10, and the insulating layer 40 is connected to the upper surface of the resistive layer 30.

The insulating layer 40 described above may also coat the peripheral portions of the base layer 10, the heat insulating layer 20, and the resistance layer 30.

In one embodiment, the base layer 10 is made of a pure metal or alloy material. The hardness and toughness of the metal or alloy material can enhance the toughness of the heating sheet. The base layer 10 described above has a thickness of 0.05 mm to 0.1 mm. The thickness of the base layer 10 is slightly larger than the thickness of the other layers. In other embodiments, the base layer 10 described above may also be made of other materials having high toughness.

The heat insulating layer 20 is made of a heat insulating material such as glass fiber, asbestos, rock wool or silicate, and has a thickness of 0.05 mm to 0.1 mm.

Referring to FIG. 2 and FIG. 3, the resistive layer 30 is made of a heat-producible metal material such as a copper material. It is applied to the surface of the heat insulating layer 20 by a printing method. In one embodiment, the resistive layer 30 is disposed on the surface of the heat insulating layer 20 in a back shape.

In other embodiments, the resistive layer 30 is provided on the surface of the heat insulating layer 20 in a corrugated shape. Alternatively, the resistive layer 30 may be provided in a plurality of strips with their ends joined together.

The thickness of the resistance layer 30 is 0.02 mm to 0.05 mm.

The insulating layer 40 is made of a solid material such as insulating varnish, insulating rubber, insulating paper, insulating fiber, plastic, rubber, lacquered paint tube, insulating impregnated fiber, electrical film, adhesive tape, or mica, glass, ceramics and the like. The insulating layer 40 has a thickness of 0.05 mm to 0.1 mm.

After the heater chip 100 is formed, the thickness of the entire heater chip 100 is from 0.17 mm to 0.35 mm, and the size of the entire heater chip 100 is thinner than that of the conventional heater chip, and the heat generation efficiency thereof is accordingly improved. Compared with ceramics, metal and other heat-generating sheets, the heating sheet uses a relatively inexpensive material, which reduces the cost of the entire heating sheet; the heating sheet does not use a lead-containing material, so that it has no odor and is more suitable for daily use.

Referring to FIG. 1 , the above-mentioned heating sheet 100 includes a body 101 and an insertion end 102 of the connecting body. The size of the insertion end 102 is smaller than the size of the body 101 . The end portion of the heating sheet 100 has a dimensional change, so that the heating sheet can be more conveniently inserted into the tobacco pipe of the electronic cigarette, improving the installation efficiency of the electronic cigarette, and reducing the damage amount of the heating sheet in the mounting heating sheet. In one embodiment, the insertion end 102 is sharp. In other embodiments, the insertion end 102 has an arc shape, a trapezoidal shape, or the like, and the effect of facilitating insertion can also be achieved.

The preparation method of the above heating sheet is:

Providing a substrate, a heat insulating material, a resistive material and an insulating material, the base material is formed as a base layer 10; wherein the base material is a metal or an alloy material, and the heat insulating material is made of glass fiber, asbestos, rock wool, silicate, etc., and the resistive material Use copper or gold, insulating materials are insulating varnish, insulating rubber, insulating paper, insulating fiber, plastic, rubber, lacquered paint tube, insulating impregnated fiber, electrical film, adhesive tape and other solid materials, or mica, glass, ceramics and other materials . The above materials are cut to form a predetermined shape and size as needed.

The heat insulating material is attached to the surface of the substrate by printing, coating, bonding or sintering to form the heat insulating layer 20; for example, the asbestos material is bonded to the upper and lower surfaces of the base layer 10 by an adhesive, the glass fiber The upper and lower surfaces of the base layer 10 are coated by sintering.

The resistive material is printed on the surface of the heat insulating layer 20 to form the resistive layer 30, thereby forming a semi-finished product. The printing method of the resistive layer 30 is known in the prior art and will not be described herein. The resistance layer 30 requires a temperature at which heat is generated to select its shape.

The semi-finished product is cut to form a predetermined shape so as to be able to cooperate with the electronic cigarette. It is also possible to cut one end of the semi-finished product so that the size of the end portion is smaller than the size of the other portions, so that after the semi-finished product forms the heating sheet 100, the heating sheet 100 forms the body 101 and the insertion end 102 of the connecting body, and the size of the insertion end 102 is smaller than The size of the body 101. The end portion of the heating sheet 100 has a dimensional change, so that the heating sheet can be more conveniently inserted into the tobacco pipe of the electronic cigarette, improving the installation efficiency of the electronic cigarette, and reducing the damage amount of the heating sheet in the mounting heating sheet. In one embodiment, the insertion end 102 is sharp. In other embodiments, the insertion end 102 has an arc shape, a trapezoid shape, or the like, and the insertion effect can be realized.

The insulating material 40 is formed by bonding, insulating, or sintering the insulating material to the surface of the semi-finished resistive layer 30 and the base layer 10, the heat insulating layer 20, and the peripheral portion of the resistive layer 30. For example, the insulating varnish is applied to the upper surface of the resistive layer 30 by coating, and the insulating paste is directly coated on the upper surface of the resistive layer 30, and the glass and ceramic are coated on the upper surface of the resistive layer 30 by sintering. Therefore, the process of selecting different materials is different.

The present invention also protects an electronic cigarette comprising a tobacco tube and the above-described heating sheet 100 installed in the tobacco tube, that is, the heating sheet 100 is used in an electronic cigarette as a heat source of the electronic cigarette. Specifically, after the heater chip 100 is energized, the heater chip 100 can generate heat.

The heating sheet according to the present invention is composed of a base layer, a heat insulating layer, a resistance layer and an insulating layer, and the base layer can improve the toughness of the heating sheet, so that the entire heating sheet has higher strength; the above layers can be thin, so the whole heating The size of the sheet is also thinner, and the heating efficiency is correspondingly improved; the heating sheet is relatively inexpensive compared to ceramics, metal and the like, and the cost of the entire heating sheet is reduced; the heating sheet does not use lead-containing material, so there is no Odor, more suitable for daily use.

The above-mentioned embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

A heating sheet comprising a base layer, a heat insulating layer connecting the surface of the base layer, a resistance layer connecting the heat insulating layer, and an insulating layer connecting the resistance layer.
The heating sheet according to claim 1, wherein the insulating layer covers a peripheral portion of the base layer, the heat insulating layer, and the resistance layer.
The heater chip according to claim 1, wherein said resistance layer is disposed in a retrotype.
The heater chip according to claim 1, wherein the resistance layer is provided in a corrugated shape.
The heater chip according to claim 1, wherein said heater chip comprises a body and an insertion end connecting said body, said insertion end having a size smaller than a size of said body.
The heater chip according to claim 1, wherein the insertion end is sharp.
The heater chip according to claim 1, wherein the heater chip has a thickness of less than 0.35 mm.
A method for preparing a heating sheet, comprising the steps of:

Providing a substrate, a heat insulating material, a resistive material and an insulating material, the substrate forming a base layer;

Attaching the heat insulating material to the surface of the base layer by printing, coating, bonding or sintering to form a heat insulating layer;

Connecting the resistive material to the surface of the heat insulating layer by printing to form a resistive layer to obtain a semi-finished product;

Cutting the semi-finished product into a preset shape;

The insulating material is connected to the surface of the resistive layer of the semi-finished product and the peripheral portion of the base layer, the heat insulating layer and the resistive layer by printing, coating, bonding or sintering to form an insulating layer.
The method for preparing a heating sheet according to claim 8, wherein before the semi-finished product is cut and covered with the insulating material, the method further comprises the step of cutting one end of the semi-finished product such that the size of the end portion is smaller than The dimensions of the other parts of the semi-finished product.
An electronic cigarette characterized by comprising a tobacco pipe and the heating sheet according to any one of claims 1 to 9 installed in the tobacco pipe.