CN111821204B - Reusable flexible heating mask - Google Patents

Reusable flexible heating mask Download PDF

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Publication number
CN111821204B
CN111821204B CN202010681175.9A CN202010681175A CN111821204B CN 111821204 B CN111821204 B CN 111821204B CN 202010681175 A CN202010681175 A CN 202010681175A CN 111821204 B CN111821204 B CN 111821204B
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electrode
mask
heat
layer
thread
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CN111821204A (en
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金虎
张文国
周振义
邓科文
狄建青
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Changzhou 2d Graptherm Technology Co ltd
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Changzhou 2d Graptherm Technology Co ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0212—Face masks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A61Q19/10—Washing or bathing preparations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/20—Layered products comprising a layer of natural or synthetic rubber comprising silicone rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
    • B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/043—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
    • H05B3/36—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs heating conductor embedded in insulating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/206—Insulating

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Ceramic Engineering (AREA)
  • Dermatology (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Birds (AREA)
  • Epidemiology (AREA)
  • Surface Heating Bodies (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)

Abstract

The invention relates to a graphene heating mask which comprises an electrode layer, a flexible circuit board and a graphene layer; and an electrode layer for the heat-generating face film. Specifically, the electrode layer is arranged to enable different areas of the electrode layer to have different power densities, so that the facial mask disclosed by the invention can realize zone temperature control according to the actual requirements of the human face, and the position of a heavy point is emphatically heated. In addition, the mask of the present invention has soft texture, can be used in combination with other functional masks, and can be reused after being cleaned by water washing.

Description

Reusable flexible heating mask
Technical Field
The invention relates to a heating mask, in particular to a reusable flexible heating mask capable of realizing subarea temperature control.
Background
When the facial mask is used, the temperature of the skin is raised, on one hand, the facial mask can improve the blood circulation of the face, promote the metabolism of the face skin, eliminate the metabolite of epidermal cells and realize the deep cleaning effect on the skin, on the other hand, the facial mask can promote the skin to absorb nutrient substances in the facial mask, and the skin care and protection are enhanced.
There are many kinds of heating facial masks prepared by using graphene in the market at present, for example, patents CN108635242A and CN109875934A only add graphene in facial masks, but graphene does not participate in warming and heating. In the prior art, ink is directly silk-screened between two electrodes, or the electrodes are silk-screened on a graphene film, but the whole surface heating and the temperature control of subareas cannot be realized. For example, patent CN106038324A discloses a method for preparing a graphene heating facial mask, which simply arranges two electrodes on two sides of the facial mask, because the central part of the facial mask needs to be ventilated at the eye, nose and mouth, and no uniform current can be formed between the electrodes, resulting in that the heating can not be performed according to the design requirement. In addition, patent CN207721957U discloses a graphene heating mask, in which a CVD method is used to prepare a single-layer graphene heating film, because the single-layer graphene must be attached to a substrate material with a certain strength, the graphene mask has no flexibility, and cannot be attached to the face during use.
Disclosure of Invention
The inventor of the application designs an electrode layer that can use in the heating surface film, realizes that different power densities are in different areas of the heating surface film, and then different temperatures are provided, so that temperature control can be carried out according to actual requirements of different areas of the face. Therefore, the invention aims to provide the heating mask and the manufacturing method thereof.
Accordingly, in a first aspect, there is provided an exothermic mask comprising:
an electrode layer comprising three ring-shaped main electrodes oppositely arranged from inside to outside in a horizontal direction: an inner electrode, a middle electrode and an outer electrode;
the flexible circuit board layer is arranged above the electrode layer, leads out the electrode layer and supplies power to the electrode layer through an external power supply; and
the graphene layer is a high-conductivity heating layer playing a heating role;
the heating mask is divided into a plurality of areas, for example 3-8 areas according to the symmetry requirement of the human face.
Optionally, the electrode layers are arranged such that the expected temperatures T of the multiple regions are the same or different.
In one embodiment, the electrode layer is an electrode line made of one or more selected from conductive silver paste, conductive carbon paste, and conductive silver paste.
In a preferred embodiment, the electrode layers are electrode lines made of conductive silver paste.
In one embodiment, the disposing the electrode layer includes disposing a wire resistance of the electrode layer according to the following formula:
R thread ＝ρ·L Wire(s) /(W Thread ·D Thread )，
Where ρ is a coefficient related to the material of the electrode layer, for example, when the electrode layer is made of conductive silver paste, ρ is 4 × 10 -7 Ω·m；
L Thread The length of the electrode line of the main electrode in the plurality of regions of the heat-generating mask is, for example, 2cm to 18cm, preferably 5cm to 15 m; more preferably from 10cm to 15 cm;
D wire(s) Is the thickness of the electrode lines in the plurality of regions of the heat-generating mask, and is 12 to 18 μm;
W thread The widths of the electrode wires in the plurality of areas of the heating mask are 6mm to 15mm, preferably 7mm to 12 mm;
R thread From 0.05 Ω to 0.5 Ω, preferably from 0.1 Ω to 0.35 Ω, most preferably from 0.25 Ω to 0.3 Ω.
In one embodiment, the disposing the electrode layer includes disposing a plurality of finger electrodes on three main electrodes of a plurality of regions, respectively, including inner electrode finger electrodes disposed at outer sides of the inner electrodes, middle electrode finger electrodes disposed at both sides of the middle electrodes, and outer electrode finger electrodes disposed at inner sides of the outer electrodes;
in a preferred embodiment, the spacing d of the interdigitated electrodes in the plurality of zones is the same or different depending on the desired temperature T of the plurality of zones, as calculated by:
U 2 /d 2 ＝P □ *R □
wherein R is □ Is the sheet resistance, P, of the graphene layer □ The power density of the heat-generating mask has a linear relationship with the expected temperature T of the area where the heat-generating mask is located as follows:
T＝AP □ +C，
wherein A and C can be obtained by fitting, A is a temperature coefficient of 270 to 350, and C is a constant of 19 to 24;
u is a voltage between the positive and negative electrodes of the area where the heat-generating mask is located.
In a preferred embodiment, the inter-digitated electrodes have a spacing d of 4.5mm to 15mm, preferably 5mm to 13mm, more preferably 9mm to 12 mm.
In one embodiment, the heat-generating mask further comprises:
a first insulating layer and a second insulating layer constituting an outer surface of the heat emitting face film, preferably, thicknesses of the first insulating layer and the second insulating layer are the same or different, each independently 18 μm to 45 μm; preferably, it is made of silica gel, PU, or PE, preferably of silica gel;
the first bonding layer and the second bonding layer are used for bonding the first insulating layer and the second insulating layer with the graphene layer, the flexible circuit board layer and the electrode layer to form a closed outer surface; preferably, the thicknesses of the first adhesive layer and the second adhesive layer are the same or different, and each independently 15 μm to 35 μm; preferably, it is made of PMMA or EVA, preferably PMMA; and
an optional reinforcement layer for reinforcing the connection between the flexible circuit board layer and the electrode layer, preferably, the reinforcement layer may have a thickness of 25 to 35 μm; preferably, it is a PI tape or a PET tape.
In one embodiment, the heat-generating mask is used in combination with a functional mask, preferably a mask that serves to clean, moisturize, whiten and/or nourish the skin.
In a preferred embodiment, the heat-generating mask is reusable after washing with water.
In a second aspect, there is provided an electrode layer for a heat generating face film, comprising three ring-shaped main electrodes oppositely disposed from inside to outside in a horizontal direction: an inner electrode, a middle electrode and an outer electrode; the heating mask is divided into a plurality of areas according to the symmetry requirement of the human face, for example, 3-8 areas; optionally, the electrode layers are arranged such that the expected temperatures T of the regions are the same or different.
In one embodiment, the electrode layer is an electrode line made of one or more selected from conductive silver paste, conductive carbon paste, and conductive silver paste.
In a preferred embodiment, the electrode layers are electrode lines made of conductive silver paste.
In one embodiment, said setting the electrode layer comprises setting a wire resistance of the electrode layer according to the following formula:
R thread ＝ρ·L Thread /(W Thread ·D Thread )，
Where ρ is a coefficient related to the material of the electrode layer, for example, when the electrode layer is made of conductive silver paste, ρ is 2.4 × 10 -7 Ω·m；
L Thread The length of the electrode line of the main electrode in the plurality of regions of the heat-generating mask is, for example, 2cm to 18cm, preferably 5cm to 15 m; more preferably from 10cm to 15 cm;
D thread Is the thickness of the electrode lines in the plurality of regions of the heat-generating mask, and is 12 to 18 μm;
W thread The widths of the electrode wires in the plurality of areas of the heating mask are 6mm to 15mm, preferably 7mm to 12 mm;
R thread From 0.05 Ω to 0.5 Ω, preferably from 0.1 Ω to 0.35 Ω, most preferably from 0.25 Ω to 0.3 Ω.
In one embodiment, the disposing of the electrode layers includes disposing a plurality of finger-inserted electrodes on three main electrodes of the plurality of regions, respectively, including an inner electrode finger-inserted electrode disposed at an outer side of the inner electrode, a middle electrode finger-inserted electrode disposed at both sides of the middle electrode, and an outer electrode finger-inserted electrode disposed at an inner side of the outer electrode.
In a preferred embodiment, the spacing d of the interdigitated electrodes in the plurality of zones is the same or different depending on the desired temperature T of the plurality of zones, as calculated by:
U 2 /d 2 ＝P □ *R □
wherein R is □ Is the sheet resistance, P, of the graphene layer □ The power density of the heat-generating mask has the following linear relation with the expected temperature T of the area where the heat-generating mask is located:
T＝AP □ +C，
wherein A and C are obtained by fitting, A is a temperature coefficient of 270 to 350, and C is a constant of 19 to 24.
U is the voltage between the positive electrode and the negative electrode of the area where the heating facial mask is located;
in a preferred embodiment, the inter-digitating electrode spacing d is from 4.5mm to 15mm, preferably from 5mm to 13mm, more preferably from 9mm to 12 mm.
In a third aspect, there is provided the use of the heat-generating mask according to the first aspect of the invention in combination with a functional mask, including but not limited to a mask having cleansing, moisturizing, whitening, nourishing effects.
In one embodiment, the heat-generating mask of the present invention can be cleaned by water washing after being used in combination with a functional mask, thereby realizing the reuse of the heat-generating mask.
In summary, the technical solution of the present invention has the following advantages: according to the electrode layer capable of being used in the heating facial mask, the heating facial mask is divided into a plurality of areas according to different parts of the face, different power densities are achieved in different areas of the facial mask (or different parts of the face), and accordingly different temperatures are achieved. The heating facial mask obtained by combining the electrode layer with the highly-conductive graphene flexible composite film and the flexible printed circuit board (FPC) is soft in texture, can be attached to the face, can be used together with other functional facial masks, and can be repeatedly used after being washed. And more importantly, the facial mask can realize the zonal temperature control of different areas of the facial mask according to the actual requirements of the human face, can control the heating temperature and power of the counterweight positions and acupuncture points, and has good market competitiveness.
Drawings
To more clearly illustrate the technical solutions of the various embodiments of the present invention, the various embodiments will be briefly described below with reference to the accompanying drawings, it being understood that the following drawings illustrate only some embodiments of the present invention and therefore should not be considered as limiting the scope.
Fig. 1 is a schematic structural diagram of a graphene exothermic mask according to an embodiment of the present invention.
Fig. 2 is a silkscreen paper of a graphene exothermic mask according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a graphene exothermic mask according to another embodiment of the present invention.
Fig. 4 is an exemplary circuit diagram of a graphene heat-generating mask film according to an embodiment of the present invention.
Fig. 5 is an image effect diagram of a graphene heat-generating mask according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the following description is intended to illustrate the present invention by way of example only and is not intended to limit the scope of the invention, which is defined by the appended claims. Moreover, it is obvious to those skilled in the art that modifications can be made to the technical solution of the present invention after understanding the concept of the present invention, and the technical solution of the present invention is within the scope of the present invention without departing from the spirit and gist of the present invention.
It is to be understood that the specific meanings of the above-mentioned terms in the present invention can be understood by those skilled in the art according to specific situations. For example, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Furthermore, unless expressly stated otherwise, the terms "disposed" and "connected" have a broad meaning, and for example, "connected" may be a fixed connection, a removable connection, or an integral part; either directly or indirectly through intervening media, either internally or in any other relationship.
As described above, the inventors of the present application have devised an electrode layer that can be used in a mask film to realize different power densities at different positions of the mask film, and thus different heat generation temperatures. The invention aims to provide a heating facial mask combining an electrode layer, a highly-conductive graphene flexible composite film and a Flexible Printed Circuit (FPC), wherein the facial mask is soft in texture, can be attached to the face, can be used with other functional facial masks in a combined mode, can be repeatedly used after being washed, and importantly, can realize regional temperature control on different parts of the facial mask according to actual requirements of the face of a human body, can control the heating temperature and power of the positions of important points and acupuncture points, and has good market competitiveness. Further, the invention also provides a heating mask and a manufacturing method thereof.
Accordingly, in a first aspect, the present invention provides an exothermic mask comprising: an electrode layer, a flexible circuit board layer, and a graphene layer.
Referring to fig. 1, which is a schematic structural view of a heat generating mask film 100 according to an embodiment of the present invention, the heat generating mask film 100 includes an electrode layer 110, a flexible circuit board layer 120, and a graphene layer 130.
In the heat generating mask of the present invention, the electrode layer 110 is disposed on the graphene layer 130, and the electrode layer 110 is connected to an external power source through the flexible circuit board layer 120 disposed thereon to supply power to the electrode layer 110. The graphene layer 130 according to the present invention is a conductive heat generating layer that functions to generate heat. The heat generation effect of the conductive heat generation layer is caused by the conductive electrode layer 110. The electrode layer 110 is arranged to realize temperature control for actual requirements of different positions of the face.
Electrode layer
Referring to fig. 2, which is a silkscreen drawing of a graphene heat-emitting mask according to an embodiment of the present invention. The electrode layer 110 according to the present invention includes three ring-shaped main electrodes oppositely disposed from inside to outside in the horizontal direction: an inner electrode 111, an intermediate electrode 112 and an outer electrode 113. Here, the term "horizontal direction" refers to a plane direction in which the heat-generating mask of the present invention is developed.
In one embodiment, the inner electrode 111 of the electrode layer according to the present invention is in communication with the outer electrode 113 to constitute a positive electrode or a negative electrode, and the intermediate electrode 112 is a negative electrode or a positive electrode, respectively.
It is noted that the electrode layer in the heating mask of the present invention may be in the shape of an electrode according to the curve of the human face, that is, the three ring-shaped main electrodes are not in a perfect circle. For example, as shown in fig. 2, the inner electrode 111 has a gourd-shaped overall shape due to the mouth region and the nose region thereof; the ring shape of the intermediate electrode 112 is not a closed ring shape; the shape of the outer electrode is close to the outline of the human face.
In one embodiment, the electrode layer 110 may be divided into a plurality of regions, for example, into 3, 4, 5, 6, 7, 8 regions according to the symmetry requirements of the human face. In particular embodiments, the electrode layer 110 may be divided according to different parts of the human face, for example, into an orbit region, a cheek region, a forehead region, a nose region, a chin region, other regions, and the like. Further, the electrode layers are "placed" according to the optimal temperature they need for use, e.g. 37-42 ℃ for the orbital area, 35-40 ℃ for the cheek and forehead area, and 34-39 ℃ for the other areas.
It should be noted that, here, the different regions of the electrode layer 110 are electrically connected, and the connection manner is not particularly limited, and includes series connection only, parallel connection only, and cross connection between series connection and parallel connection.
In the case of the present invention, it is,"providing the electrode layer" includes providing the resistance of the electrode layer, e.g. the resistance R of a main electrode in the electrode layer Thread 。
In one embodiment, all three ring-shaped main electrodes 111, 112 and 113 in the electrode layer according to the present invention are electrode lines. In the invention, the electrode wire can be selected from one or more of conductive silver paste, conductive carbon paste and conductive silver paste.
In a preferred embodiment, the electrode lines are made of conductive silver paste.
Without wishing to be bound by theory, the inventors of the present application found that the wire resistance of the electrode layer can be set according to the following formula:
R thread ＝ρ·L Thread /(W Thread ·D Thread )，
Where ρ is a coefficient relating to the material of the electrode layer. For example, when the electrode layer is made of conductive silver paste, ρ ═ 4.0 × 10 -7 Ω·m；
L Thread The length of the electrode wire, which is the main electrode, is 2cm to 18 cm.
In a preferred embodiment, L Thread Is 5cm to 15cm, preferably 10cm to 15cm, more preferably 5cm, 6cm, 7cm, 8cm, 9cm, 10cm, 11cm, 12cm, 13cm, 14cm, or 15cm, or a range consisting of any of these values.
In still another preferred embodiment, the lengths L of the electrode lines in the plurality of regions of the heat-generating mask are set to be equal to each other Thread Are the same or different. For example, the length L of the silver paste line of the internal electrode in the chin region Thread Different from both in the cheek region and in the forehead region.
D Thread Is the thickness of the electrode wire and is 12 μm to 18 μm.
In a preferred embodiment, D Wire(s) Is 12cm, 13cm, 14cm, 15cm, 16cm, 17cm, or 18cm, or a range consisting of any of these values.
In still another preferred embodiment, the thickness D of the electrode lines in the plurality of regions of the heat-generating mask Thread Are the same or different; for example, the thickness D of the silver paste line of the internal electrode in the chin region Thread Different from both in the cheek region and in the forehead region. As another example, the thickness D of the silver paste line of the internal electrode in the chin region Thread The same width as it is in the cheek area and in the forehead area,
W thread The width of the electrode line, which is the main electrode, is 6mm to 15 mm.
In a preferred embodiment, W Thread From 7mm to 12mm, more preferably 7cm, 8cm, 9cm, 10cm, 11cm, or 12cm, or a range consisting of any of these.
In a more preferred embodiment, the width W of the conductive silver paste from which the different master electrodes are made Thread May be the same or different.
In yet another preferred embodiment, the width W of the conductive silver paste making up the electrode lines Thread The different regions of the mask may be the same or different. For example, the width W of the silver paste line of the internal electrode in the chin region Thread Different from both in the cheek region and in the forehead region.
In one embodiment, the wire resistance R of the conductive silver paste of the electrode layer 110 of the present invention Thread And 0.05 omega to 0.5 omega.
In a preferred embodiment, R Thread Is 0.1 Ω to 0.35 Ω, more preferably 0.25 Ω to 0.3 Ω, and most preferably 0.25 Ω, 0.26 Ω, 0.27 Ω, 0.28 Ω, 0.29 Ω, 0.30 Ω, 0.31 Ω, 0.32 Ω, 0.33 Ω, 0.34 Ω, or 0.35 Ω, or a range consisting of any of them.
The "providing an electrode layer" according to the present invention may include changing a wire resistance of an electrode wire constituting the electrode layer. The wire resistance of the electrode wire depends on the material of the electrode wire, the thickness of the electrode wire, the width of the electrode wire, and the like. According to the expected temperature, different electrode wire materials can be selected, the thickness and the width of the electrode wire can be adjusted, and the like.
In one embodiment, a plurality of interdigitated electrodes are distributed on the main electrodes according to the present invention, and the plurality of interdigitated electrodes on each main electrode are spaced apart from the plurality of interdigitated electrodes of the main electrode opposite thereto. Here, the term "interdigitated electrode" is a plurality of branch electrodes arranged in parallel, which are branched on the main electrode. As shown in fig. 2, a plurality of finger electrodes are distributed on the three main electrodes. Specifically, the inter-digitated electrodes include an inner electrode inter-digitated electrode 114 disposed outside the inner electrode 111, an intermediate electrode inter-digitated electrode 115 disposed on both sides of the intermediate electrode 112, and an outer electrode inter-digitated electrode 116 disposed inside the outer electrode 113, corresponding to three main electrodes.
Each of the inter-electrode inter-finger electrodes 114 disposed outside the inter-electrode 111 is disposed adjacent to the inter-electrode inter-finger electrode 115 disposed inside the inter-electrode 112, or each of the inter-electrode inter-finger electrodes 114 is disposed between two adjacent inter-electrode inter-finger electrodes 115, and each of the inter-electrode inter-finger electrodes 115 disposed inside the inter-electrode 112 is disposed between two adjacent inter-electrode inter-finger electrodes 114. Similarly, the outer electrode inter-finger electrodes 116 disposed inside the outer electrodes 113 are disposed adjacent to the intermediate electrode inter-finger electrodes 115 disposed outside the intermediate electrodes 112, or each outer electrode inter-finger electrode 116 is disposed between two adjacent intermediate electrode inter-finger electrodes 115, and each intermediate electrode inter-finger electrode 115 disposed outside the intermediate electrodes 112 is disposed between two adjacent outer electrode inter-finger electrodes 116. More specifically, the inner electrode inter-digitating electrode 114, the middle electrode inter-digitating electrode 115 and the outer electrode inter-digitating electrode 116 are integrally arranged in an inter-digitating type.
The finger inserting electrodes in the heating mask are arranged in parallel. It is noted that the finger electrodes in the heat-generating mask of the present invention are not horizontal in consideration of the curve of the face. For example, as shown in fig. 2, the finger electrodes in the forehead area are arc-shaped.
In the case of the present invention, "providing an electrode layer" may further include adjusting the arrangement of a plurality of finger electrodes in a plurality of regions of the electrode layer. According to the desired temperatures T of the plurality of regions of the heat-generating mask sheet of the present invention, the number n of the interdigital electrodes and the pitch d of the interdigital electrodes arranged at intervals can be set for each region.
In one embodiment, the number n of interdigitated electrodes distributed in each region may be the same or different. n may be 3 to 10, preferably 3 to 6.
"inter-finger electrode spacing d" refers to the distance between adjacently disposed inter-finger electrodes on different main electrodes, specifically, spacing d1 between adjacently disposed inner electrode inter-finger electrode 114 and intermediate electrode inter-finger electrode 115, and spacing d2 between adjacently disposed intermediate electrode inter-finger electrode 115 and outer electrode inter-finger electrode 116. For the aforementioned division of the electrode layer 110 into the eye orbit region, the cheek region, the forehead region, the nose region, the chin region, other regions, etc., according to different portions of the human face, the pitches d of the respective regions may be the same or different, and more specifically, the pitch d1 between the adjacently disposed inner electrode inter-finger electrodes 114 and the intermediate electrode inter-finger electrodes 115 and the pitch d2 between the adjacently disposed intermediate electrode inter-finger electrodes 115 and the outer electrode inter-finger electrodes 116 may be the same or different among the regions. More specifically, d1 and d2 are each independently 4.5mm to 15mm, preferably 7mm to 13mm, more preferably 9mm to 12 mm.
As described above, the electrode layer 110 is divided into the orbit region, the cheek region, the forehead region, the nose region, the chin region, other regions, and the like according to different parts of the human face. According to the expected temperatures T of the plurality of regions of the heat generation mask of the present invention, given the sum of the sheet resistances R □ of the graphene layer 130 in the heat generation mask of the present invention, the distance d between the spaced-apart interdigitated electrodes can be calculated by the following formula:
U 2 /d 2 ＝P □ *R □
wherein, P □ To be the power density of the heat-generating mask of the present invention, there is a linear relationship with the expected temperature T of the heat-generating mask in this area as follows:
T＝AP □ +C，
wherein A and C can be obtained by fitting, A is a temperature coefficient of 270 to 350, and C is a constant of 19 to 24.
U is the voltage between the positive and negative electrodes of the heating mask in the area, and the resistance R of the heating mask and the electrode layer in the area Thread Power density P of heating face pack □ And the area S of this region. The person skilled in the art can calculate the value by known calculation methodsObtained, and is not particularly limited.
It is known that the smaller the number n of interdigital electrodes distributed in a certain region of the electrode layer, the larger the value of the inter-digital electrode pitch d, and from the above formula, the larger the value of the inter-digital electrode pitch d, the higher the power density P of the heat-generating surface film □ The smaller the temperature, the lower the temperature of the area on the resulting heat-generating mask. And vice versa.
Flexible circuit board layer
In one embodiment, a portion of the flexible circuit board layer 120 of the present invention occupies a portion of the chin portion of the mask, and another portion of the flexible circuit board layer 120 exits the chin portion, as shown in fig. 1 and 2. The portion of the flexible circuit board layer 120 that leads out may have, for example, a USB, Micro USB, or Type-C port for connecting various electronic devices, such as a power source, to supply power to the electrode layer 110 through the power source.
In a preferred embodiment, the thickness of the overlapping portion of the flexible circuit board layer 120 of the present invention and the heating mask film of the present invention is 0.2mm to 0.5 mm.
The flexible circuit board layer 120 used in the present invention may be manufactured by a method well known to those skilled in the art, and is not particularly limited.
In another embodiment, the flexible circuit board layer 120 of the present invention may also be connected to various controllers or electronic components other than a power source, for example, a thermostat for adjusting the switching time and the current level.
Graphene layer
The graphene layer 130 of the present invention is a high conductive, heating and flexible composite film, and has excellent conductive and thermal conductive properties, good chemical stability and erosion resistance, acid resistance, alkali resistance, and high temperature resistance. Graphite at room temperature has a very high thermal conductivity.
In one embodiment, the graphene layers of the present invention may be prepared by means known to those skilled in the art, for example, according to the method disclosed in patent CN107474520A, the entire content of which is incorporated herein by reference. Preferably, the graphene layer 130 of the present invention may be prepared via the following method:
1) mixing graphene powder prepared by a chemical vapor deposition method, an elastic high polymer material and a solvent to prepare slurry;
2) coating the slurry on a release film to obtain a graphene film;
wherein the elastic high polymer material is selected from TPU, elastic PVC and TPEA; the solvent is selected from N, N-dimethylformamide, butyl acetate, acetone, N-methylpyrrolidone and xylene.
Wherein the proportion of the graphene powder, the elastic high polymer material and the solvent is 0.5-5 parts of the graphene powder, 15-35 parts of the elastic high polymer particles and 60-80 parts of the solvent.
In a preferred embodiment, a thixotropic agent and a viscosity modifier are also included in the paste; preferably, the thixotropic agent is selected from the group consisting of polyamide waxes, fumed silica, organobentonites, hydrogenated castor oil; the viscosity regulator is selected from microcrystalline wax and sodium carboxymethylcellulose.
In particular embodiments, the coating may be a coating method commonly used by those skilled in the art, such as slot extrusion coating, flat blade coating, comma blade coating, and the like.
The graphene layer prepared by the method has flexibility and high conductivity, and the resistance does not change after the graphene layer is stretched and deformed, so that the temperature stability on the heating mask can be ensured.
In a preferred embodiment, the graphene layer 130 prepared by the above method has a thickness of 10 μm to 200 μm, preferably 30 μm to 150 μm, more preferably 100 μm to 150 μm; the sheet resistance R □ of the graphene layer 130 is 200 Ω/□ to 800 Ω/□, preferably 450 Ω/□ to 550 Ω/□, and more preferably 500 Ω/□.
Insulating layer and adhesive layer
The heat-generating mask of the present invention may further include: a first insulating layer 250 and a second insulating layer 251 constituting a closed outer surface of the heat generation mask of the present invention; and a first adhesive layer 240 and a second adhesive layer 241 for enclosing the graphene layer 230, the flexible circuit board layer 220, and the electrode layer 210 between the first insulating layer 250 and the second insulating layer 251, resulting in enclosed outer surfaces, as shown in fig. 3.
For the purpose of obtaining a closed outer surface of the heat generating film, the sizes of the first and second insulating layers 250 and 251 may be equal to or larger than the sizes of the first and second adhesive layers 240 and 241, respectively, preferably larger than the sizes of the first and second adhesive layers 240 and 241, and the sizes of the first and second adhesive layers 240 and 241 may be equal to or larger than the size of the graphene layer 230, preferably larger than the size of the graphene layer 230, provided that the insulating layers (250, 251), the adhesive layers (240, 241), and the graphene layer (230) each have a hollowed-out ear region, an eye region, and a mouth region that can be aligned.
In one embodiment, the thicknesses of the first and second insulating layers 250 and 251 may be the same or different, each independently 18 to 45 μm.
In yet another embodiment, the thickness of the first adhesive layer 240 and the second adhesive layer 241 may be the same or different, and each independently 15 μm to 35 μm.
In a preferred embodiment, the materials of the first insulating layer 250 and the second insulating layer 251 of the heat-generating mask of the present invention may be the same or different, and the materials may be silica gel, PU, or PE, preferably silica gel. The material of the first adhesive layer 240 and the second adhesive layer 241 may be the same or different, and the material may be PMMA or EVA, and is preferably PMMA.
In a preferred embodiment, the materials used for the first insulating layer 250 and the second insulating layer 251 of the heat emitting mask of the present invention are water-resistant. Therefore, the heat-generating mask of the present invention can be cleaned by washing with water. That is, the heat-generating mask of the present invention can be reused.
Reinforcing layer
In one embodiment, the heating mask of the present invention is connected to an external electronic component such as a power source through the flexible circuit board layer 220, and since the heating mask of the present invention can be reused, in order to prevent the flexible circuit board layer 220 from being loosened after being plugged and unplugged for a plurality of times, the heating mask of the present invention further includes a reinforcing layer, as shown in fig. 3, a reinforcing layer 260 is disposed between the first adhesive layer 240 and the flexible circuit board layer 220, and covers an overlapping area of the flexible circuit board layer 220 and the electrode layer 210, for reinforcing the connection between the flexible circuit board layer 220 and the electrode layer 210.
In a preferred embodiment, the thickness of the reinforcement layer may be 25 μm to 35 μm; the material can be PI adhesive tape or PET adhesive tape.
In a second aspect of the present invention, there is provided an electrode layer for a heat-generating mask film. As shown in fig. 2, the electrode layer 110 according to the present invention includes three ring-shaped main electrodes oppositely disposed from inside to outside in a horizontal direction: an inner electrode 111, an intermediate electrode 112 and an outer electrode 113.
In one embodiment, the electrode layer 110 may be divided into a plurality of portions, for example, 3, 4, 5, 6, 7, 8 portions, according to the symmetry requirements of the human face. In particular embodiments, the electrode layer 110 may be divided according to different parts of the human face, for example, into an orbit region, a cheek region, a forehead region, a nose region, a chin region, other regions, and the like. Further, the electrode layers are "placed" according to the optimal temperature they need for use, e.g. 37-42 ℃ for the orbital area, 35-40 ℃ for the cheek and forehead area, and 34-39 ℃ for the other areas.
It should be noted that, here, the different regions of the electrode layer 110 are electrically connected, and the connection manner is not limited in particular, and includes only series connection, only parallel connection, and cross connection between series connection and parallel connection.
Similarly, the electrode layer in the heat-generating mask film of the present invention may set the shape of the electrode according to the curve of the face, that is, the three ring-shaped main electrodes are not perfectly circular. For example, as shown in fig. 2, the inner electrode 111 has a gourd-shaped overall shape due to the mouth region and the nose region thereof; the ring shape of the intermediate electrode 112 is not a closed ring shape; the shape of the outer electrode also approximates the contour of the face.
In one embodiment, the inner electrode 111 of the electrode layer according to the present invention is in communication with the outer electrode 113 to constitute a positive electrode or a negative electrode of the main electrode, and the intermediate electrode 112 is correspondingly a negative electrode or a positive electrode of the main electrode.
In one embodiment, all three ring-shaped main electrodes 111, 112 and 113 in the electrode layer according to the present invention are electrode lines. In the invention, the electrode wire can be selected from one or more of conductive silver paste, conductive carbon paste and conductive silver paste.
In a preferred embodiment, the electrode lines are made of conductive silver paste.
Without wishing to be bound by theory, the inventors of the present application found that the wire resistance of the electrode layer can be set according to the following formula:
R wire(s) ＝ρ·L Wire(s) /(W Thread ·D Thread )，
Where ρ is a coefficient related to a material of the electrode layer. For example, when the electrode layer is made of conductive silver paste, ρ ═ 4.0 × 10 -7 Ω·m；
L Thread The length of the electrode wire, which is the main electrode, is 8cm to 18 cm.
In a preferred embodiment, L Thread Is 5cm to 15cm, preferably 10cm to 15cm, more preferably 5cm, 6cm, 7cm, 8cm, 9cm, 10cm, 11cm, 12cm, 13cm, 14cm, or 15cm, or a range consisting of any of these values.
In still another preferred embodiment, the lengths L of the electrode lines in the plurality of regions of the heat-generating mask are set to be equal to each other Thread Are the same or different. For example, the length L of the silver paste line of the internal electrode in the chin region Thread Different from both in the cheek region and in the forehead region.
D Thread Is the thickness of the electrode wire and is 12 μm to 18 μm.
In a preferred embodiment, D Thread Is 12cm, 13cm, 14cm, 15cm, 16cm, 17cm, or 18cm, or a range consisting of any of these values.
In still another preferred embodiment, the thickness D of the electrode lines in the plurality of regions of the heat-generating mask Thread Are the same or different; for example, the thickness D of the silver paste line of the internal electrode in the chin region Thread With its width in the cheek area, in the forehead areaThe widths of the domains are all different. As another example, the thickness D of the silver paste line of the internal electrode in the chin region Thread The same width as it is in the cheek area and in the forehead area,
W thread The width of the electrode line, which is the main electrode, is 6mm to 15 mm.
In a preferred embodiment, W Thread From 7mm to 12mm, more preferably 7cm, 8cm, 9cm, 10cm, 11cm, or 12cm, or a range consisting of any of these.
In a more preferred embodiment, the width W of the conductive silver paste from which the different master electrodes are made Thread May be the same or different.
In yet another preferred embodiment, the width W of the conductive silver paste making up the electrode lines Thread The different regions of the mask may be the same or different. For example, the width W of the silver paste line of the internal electrode in the chin region Thread Different from both in the cheek region and in the forehead region.
In one embodiment, the wire resistance R of the conductive silver paste of the electrode layer 110 of the present invention Thread And 0.05 omega to 0.5 omega.
In a preferred embodiment, R Thread Is 0.1 Ω to 0.35 Ω, more preferably 0.25 Ω to 0.3 Ω, and most preferably 0.25 Ω, 0.26 Ω, 0.27 Ω, 0.28 Ω, 0.29 Ω, 0.30 Ω, 0.31 Ω, 0.32 Ω, 0.33 Ω, 0.34 Ω, or 0.35 Ω, or a range consisting of any of them.
The "providing an electrode layer" according to the present invention may include changing a wire resistance R of an electrode wire constituting the electrode layer Thread . The resistance of the electrode wire depends on the material of the electrode wire and the thickness D of the electrode wire Thread Width W of electrode wire Thread And the like. According to the expected temperature, different electrode wire materials can be selected, the thickness and the width of the electrode wire can be adjusted, and the like.
In one embodiment, a plurality of interdigitated electrodes are distributed on the main electrodes according to the present invention, and the plurality of interdigitated electrodes on each main electrode are spaced apart from the plurality of interdigitated electrodes of the main electrode opposite thereto. Here, the term "interdigitated electrode" is a plurality of branch electrodes arranged in parallel, which are branched on the main electrode. As shown in fig. 2, a plurality of finger electrodes are distributed on the three main electrodes. Specifically, the interdigital electrodes include an inner electrode interdigital electrode 114 disposed outside the inner electrode 111, an intermediate electrode interdigital electrode 115 disposed at both sides of the intermediate electrode 112, and an outer electrode interdigital electrode 116 disposed inside the outer electrode 113, corresponding to three main electrodes.
Each of the inter-electrode inter-finger electrodes 114 disposed outside the inter-electrode 111 is disposed adjacent to the inter-electrode inter-finger electrode 115 disposed inside the inter-electrode 112, or each of the inter-electrode inter-finger electrodes 114 is disposed between two adjacent inter-electrode inter-finger electrodes 115, and each of the inter-electrode inter-finger electrodes 115 disposed inside the inter-electrode 112 is disposed between two adjacent inter-electrode inter-finger electrodes 114. Similarly, the outer electrode inter-finger electrodes 116 disposed inside the outer electrodes 113 are disposed adjacent to the intermediate electrode inter-finger electrodes 115 disposed outside the intermediate electrodes 112, or each outer electrode inter-finger electrode 116 is disposed between two adjacent intermediate electrode inter-finger electrodes 115, and each intermediate electrode inter-finger electrode 115 disposed outside the intermediate electrodes 112 is disposed between two adjacent outer electrode inter-finger electrodes 116. More specifically, the inner electrode inter-digitating electrode 114, the middle electrode inter-digitating electrode 115 and the outer electrode inter-digitating electrode 116 are integrally arranged in an inter-digitating type.
The finger inserting electrodes in the heating mask are arranged in parallel. However, it is noted that the finger-inserted electrodes in the heat-generating mask of the present invention are not horizontal in consideration of the curve of the face. For example, as shown in fig. 2, the finger electrodes in the forehead area are arc-shaped.
In the case of the present invention, "providing an electrode layer" may further include adjusting the arrangement of a plurality of finger electrodes in a plurality of regions of the electrode layer. Specifically, according to the desired temperatures T of the plurality of regions of the heat-generating mask film of the present invention, the number n of the interdigital electrodes and the pitch d of the interdigital electrodes arranged at intervals in each region may be set.
In one embodiment, the number n of interdigitated electrodes distributed in each region may be the same or different. n may be 3 to 10, preferably 3 to 6. The number of n per region can be obtained by dividing the width of each region by the pitch of the interdigitated electrodes.
The "pitch d of the inter-finger electrodes" refers to a distance between the inter-finger electrodes adjacently disposed on different main electrodes, specifically, a pitch d1 between the inner electrode inter-finger electrode 114 and the intermediate electrode inter-finger electrode 115 adjacently disposed, and a pitch d2 between the intermediate electrode inter-finger electrode 115 and the outer electrode inter-finger electrode 116 adjacently disposed. As described above, the electrode layer 110 is divided into the orbit region, the cheek region, the forehead region, the nose region, the chin region, other regions, etc., according to different portions of the human face, and the intervals d of the inter-electrode inter-digitated electrodes of the respective regions may be the same or different, and more particularly, the interval d1 between the adjacently disposed inner electrode inter-digitated electrode 114 and the middle electrode inter-digitated electrode 115 and the interval d2 between the adjacently disposed middle electrode inter-digitated electrode 115 and the outer electrode inter-digitated electrode 116 may be the same or different in each region. More specifically, d1 and d2 are each independently 4.5mm to 15mm, preferably 7mm to 13mm, more preferably 9mm to 12 mm.
As described above, the electrode layer 110 is divided into the eye socket region, the cheek region, the forehead region, the nose region, the chin region, other regions, and the like according to different parts of the human face. According to the expected temperatures T of the plurality of regions of the heat generation mask of the present invention, in the case where the sheet resistance R □ of the graphene layer 130 in the heat generation mask of the present invention is known, the distance d of the inter-digitated electrodes disposed at intervals in each region can be calculated by the following formula:
U 2 /d 2 ＝P □ *R □
wherein, P □ To be the power density of the heat-generating mask of the present invention, there is a linear relationship with the expected temperature T of the heat-generating mask in this area as follows:
T＝AP □ +C，
wherein A and C can be obtained by fitting, A is a temperature coefficient of 270 to 350, and C is a constant of 19 to 24.
U is the voltage between the positive and negative electrodes of the heating mask in the area, and the resistance R of the heating mask and the electrode layer in the area Thread And generate heatPower density of the mask P □ And the area S of this region. Those skilled in the art can obtain the information by known calculation methods without particular limitation.
As is known to those skilled in the art, the smaller the number n of the interdigital electrodes distributed in a certain region of the electrode layer, the larger the value of the distance d between the interdigital electrodes. As can be seen from the above formula, the larger the value of the distance d between the finger-inserted electrodes is, the higher the power density P of the heat-generating mask is □ The smaller the temperature, the lower the temperature of the area on the resulting heat-generating mask. And vice versa.
In a third aspect, there is provided the use of the heat-generating mask according to the first aspect of the invention in combination with a functional mask, including but not limited to a mask having cleansing, moisturizing, whitening, nourishing effects.
When the heating facial mask is used, the functional facial mask can be placed under the heating facial mask provided by the invention to be in direct contact with the face, and different areas of the heating facial mask have different heating temperatures, so that the regional temperature control is realized on the positions of gravity points and acupuncture points.
In one embodiment, the heat-generating mask of the present invention can be cleaned by washing with water after being used in combination with the functional mask, that is, the heat-generating mask of the present invention can be reused.
In conclusion, the graphene heating mask provided by the invention is soft in texture, can be attached to the face, is high in safety, can generate heat comprehensively, can be controlled in temperature partition, can be used together with other functional masks, and can be repeatedly used after being washed.
Hereinafter, the present invention will be described in more detail with reference to exemplary embodiments. However, the exemplary embodiments disclosed herein are for illustrative purposes only and should not be taken as illustrating the scope of the present invention.
Example 1: graphene layer
This example presents an exemplary method of preparing a graphene layer of the present invention:
1) mixing 1 part of graphene powder, 10 parts of polyurethane and 18 parts of DMF (dimethyl formamide) which is used as a solvent according to a ratio to prepare slurry;
2) and coating the slurry on a release film to obtain the graphene film.
The thickness of the prepared graphene layer is 35 mu m, and the sheet resistance R is □ Is 500 omega/□.
Example 2: electrode layer
On the basis of the graphene layer prepared in example 1, an electrode layer was obtained by screen printing conductive silver paste.
In this embodiment, the exemplary electrode layer of the present invention is divided into three regions from top to bottom: the chin, cheek and forehead regions, and the expected temperatures of 35 deg.c for the chin region, 40 deg.c for the cheek region and 38 deg.c for the forehead region were achieved.
Various parameters for the electrode layer are shown in table 1 below.
Table 1: the electrode layer of the graphene heating mask disclosed by the invention
Figure BDA0002585890650000201
In this example 2, when the electrode layer is made of conductive silver paste, therefore, ρ ═ 4.0 × 10 -7 Ω·m。
As can be seen from Table 1, since the inner electrode and the outer electrode of the electrode layer of this example collectively serve as the negative electrode, the line width W of the conductive silver paste thereof Thread Length L of Thread Thickness D Thread Are all uniform except for the thickness D Wire(s) But also in different areas. In addition, the line width W of the conductive silver paste of the positive electrode (i.e., the middle electrode) and the negative electrode (i.e., the inner electrode and the outer electrode) Thread Length L of Thread Is different. The above parameters of the electrode wire made of conductive silver paste are different, resulting in the wire resistance R of the positive and negative electrodes in different areas Thread Different.
Further, fig. 4 is a circuit diagram of an electrode layer of the heat generating mask pack according to the present invention, and it can be seen that a chin region, a cheek region and a forehead region are connected in parallel.
Example 3: heating mask
Using the graphene layer prepared in example 1 and the electrode layer prepared in example 2, the flexible electrode layer, the insulating layer, and the adhesive layer were combined to prepare the heat-generating mask film according to one embodiment of the present invention. The specific parameters of the heat-emitting mask are shown in the following table 2.
TABLE 2 parameters of the heat-generating mask according to one embodiment of the present invention
Figure BDA0002585890650000211
As can be seen from table 2, the actual temperatures of the three regions of the prepared heat-generating mask are respectively: 34.8 deg.C, 39.9 deg.C and 37.9 deg.C, which are substantially identical to the expected temperatures of 35 deg.C, 40 deg.C and 38 deg.C. Fig. 5 shows an image effect graph of the prepared heat-generating mask, on which actually measured temperatures are shown in the chin region, cheek region and forehead region, respectively.
Therefore, the flexible heating mask disclosed by the invention has different heating temperatures in different areas of the face according to the actual requirements of the face of a human body, and further realizes regional power control and temperature control.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made by those skilled in the art should be included in the protection scope of the present invention, and various changes and modifications may be made by those skilled in the art. All within the spirit and principles of this patent.

Claims (29)

1. A heat-generating mask, comprising:
an electrode layer including three ring-shaped main electrodes oppositely disposed from inside to outside in a horizontal direction: an inner electrode, a middle electrode and an outer electrode;
the flexible circuit board layer is arranged above the electrode layer, leads out the electrode layer and supplies power to the electrode layer through an external power supply; and
the graphene layer is a high-conductivity heating layer playing a heating role;
dividing the heating mask into 3-8 different areas according to the symmetry requirement of the human face; and arranging the electrode layers such that the expected temperatures T of said different areas are different;
the setting the electrode layer includes setting a wire resistance of the electrode layer according to:
R wire(s) ＝ρ·L Thread /(W Thread ·D Thread )，
Wherein ρ is a coefficient related to a material of the electrode layer; l is Thread The length of the electrode wire of the main electrode in the different areas of the heating mask is 2cm to 18 cm; d Thread Is the thickness of the electrode wires in the different areas of the heating mask, and is 12 to 18 μm; w Thread The widths of the electrode wires in the different areas of the heating mask are 6-15 mm; r Thread 0.05 to 0.5 Ω;
the electrode layer is arranged on the three main electrodes in the different areas; depending on the expected temperature T of the different areas of the heat-generating face film, the spacing d of the interdigitated electrodes in the different areas is the same or different, as calculated by:
U 2 ／d 2 ＝ P □ * R □
wherein R is □ Is the sheet resistance, P, of the graphene layer □ The power density of the heat-generating mask has the following linear relation with the expected temperature T of the area where the heat-generating mask is located:
T=AP □ +C，
wherein A and C can be obtained by fitting, A is a temperature coefficient of 270 to 350, and C is a constant of 19 to 24;
u is a voltage between the positive and negative electrodes of the area where the heat-generating mask is located.
2. A heating face pack according to claim 1, wherein the electrode layer is an electrode wire made of one or more selected from conductive silver paste, conductive carbon paste, and conductive silver paste.
3. A heat-generating face mask as claimed in claim 2, wherein said electrode wires are made of conductive silver paste, p = 4.0 x 10 -7 Ω·m。
4. A heat-generating mask as claimed in claim 1 or 2, wherein L is Thread Is 5cm to 15 m.
5. A heat-generating mask as claimed in claim 1 or 2, wherein L is Wire(s) Is 10cm to 15 cm.
6. A heat-generating mask as claimed in claim 1 or 2, wherein W is W Thread From 7mm to 12 mm.
7. A heat-generating mask as claimed in claim 1 or 2, wherein R is Thread And 0.1 omega to 0.35 omega.
8. A heat-generating mask as claimed in claim 1 or 2, wherein R is Thread From 0.25 omega to 0.3 omega.
9. A heat-generating mask as claimed in claim 1 or 2, wherein the spacing d of the inter-digitated electrodes is 4.5mm to 15 mm.
10. A heat-generating pack as claimed in claim 9, wherein the spacing d of the inter-digitated electrodes is 7 to 13 mm.
11. A heat-generating pack as claimed in claim 10, wherein the spacing d of the inter-digitated electrodes is 9 to 12 mm.
12. A heat generating mask as claimed in claim 1 or 2 wherein said heat generating mask further comprises:
a first insulating layer and a second insulating layer constituting an outer surface of the heat generating face film;
the first bonding layer and the second bonding layer are used for bonding the first insulating layer and the second insulating layer with the graphene layer, the flexible circuit board layer and the electrode layer to form a closed outer surface; and
an optional reinforcement layer for reinforcing the connection between the flexible circuit board layer and the electrode layer.
13. A heat generating mask as set forth in claim 12, wherein the thicknesses of said first and second insulating layers are the same or different, each independently being 18 to 45 μm.
14. A heat generating mask as claimed in claim 12, wherein said first and second insulating layers are each independently made of silicone, PU, or PE.
15. A heat generating mask as set forth in claim 12, wherein said first and second insulating layers are made of silicone.
16. A heat-generating mask as set forth in claim 12, wherein the thicknesses of the first and second adhesive layers are the same or different and each independently 15 to 35 μm.
17. A heat generating mask as set forth in claim 12, wherein said first and second adhesive layers are each independently made of PMMA or EVA.
18. A heat emitting mask as claimed in claim 12, wherein said first and second adhesive layers are made of PMMA.
19. A heat generating mask as set forth in claim 12, wherein said reinforcing layer has a thickness of 25 to 35 μm.
20. A heat generating mask as set forth in claim 13, wherein said reinforcing layer is PI tape or PET tape.
21. A heat-generating mask as claimed in claim 1 or 2, wherein the heat-generating mask is used in combination with a functional mask, the functional mask being a mask for cleaning, moisturizing, whitening and/or nourishing.
22. A heat-generating mask as claimed in claim 1 or claim 2 wherein the heat-generating mask is reusable after washing with water.
23. An electrode layer for the heat generating face film of claim 1 or 2, comprising three ring-shaped main electrodes oppositely disposed from inside to outside in a horizontal direction: inner electrode, middle electrode and outer electrode; the heating mask is divided into 3-8 different areas according to the symmetry requirement of the human face; arranging the electrode layers such that the expected temperatures T of said different areas are different;
the setting the electrode layer includes setting a wire resistance of the electrode layer according to:
R thread ＝ρ·L Thread /(W Thread ·D Thread )，
Wherein ρ is a coefficient related to a material of the electrode layer; l is Thread The length of the electrode wire of the main electrode in the different areas of the heating mask is 2cm to 18 cm; d Thread Is the thickness of the electrode wires in the different areas of the heating mask, and is 12 to 18 μm; w Thread The widths of the electrode wires in the different areas of the heating mask are 6-15 mm; r Wire(s) 0.05 to 0.5 Ω;
the setting electrode layer further comprises a plurality of finger inserting electrodes which are respectively arranged on the three main electrodes in the different areas; the spacing d of the interdigitated electrodes in the different areas is the same or different depending on the expected temperature T of the different areas of the heat-generating mask, calculated by:
U 2 ／d 2 ＝ P □ * R □
wherein R is □ Is the sheet resistance, P, of the graphene layer □ Is the power of the heating maskDensity, having a linear relationship with the expected temperature T of the area where the heat-generating mask is located as follows:
T=AP □ +C，
wherein A and C can be obtained by fitting, A is a temperature coefficient of 270 to 350, and C is a constant of 19 to 24;
u is a voltage between the positive and negative electrodes of the area where the heat-generating mask is located.
24. The electrode layer of claim 23, wherein the electrode layer is an electrode wire made of one or more selected from conductive silver paste, conductive carbon paste, and conductive silver paste.
25. The electrode layer of claim 24, wherein the electrode lines are made of conductive silver paste, ρ = 4.0 x 10 -7 Ω·m。
26. The electrode layer of any of claims 23-25, wherein the inter-digitated electrodes have a pitch d of 4.5mm to 15 mm.
27. The electrode layer of any of claims 23-25, wherein the inter-digitated electrodes have a pitch d of 7mm to 13 mm.
28. The electrode layer of any of claims 23-25, wherein the inter-digitated electrodes have a pitch d of 9mm to 12 mm.
29. Use of a heat-generating mask as claimed in any one of claims 1 to 22 in combination with a functional mask for non-therapeutic purposes, said functional mask being a mask having cleansing, hydrating, whitening and/or nourishing effects.
CN202010681175.9A 2020-07-15 2020-07-15 Reusable flexible heating mask Active CN111821204B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207654309U (en) * 2018-03-30 2018-07-27 重庆墨希科技有限公司 Heat mask in subregion
CN109044604A (en) * 2018-07-29 2018-12-21 刘小英 A kind of beautifying fase film mask for treating auxiliary heat based on graphene heating film stratification
CN110367619A (en) * 2019-07-18 2019-10-25 才千惠 A kind of conductive clothes of graphene fever based on Internet of Things

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207654309U (en) * 2018-03-30 2018-07-27 重庆墨希科技有限公司 Heat mask in subregion
CN109044604A (en) * 2018-07-29 2018-12-21 刘小英 A kind of beautifying fase film mask for treating auxiliary heat based on graphene heating film stratification
CN110367619A (en) * 2019-07-18 2019-10-25 才千惠 A kind of conductive clothes of graphene fever based on Internet of Things

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