阅读说明：本技术 一种多重工胶带及其剥离方法 (Multiplex adhesive tape and stripping method thereof ) 是由 慕鹏燕 袁勇 管丹 杨慧达 于 2021-09-15 设计创作，主要内容包括：本发明公开了一种多重工胶带及其剥离方法,多重工胶带包括基材层,所述基材层相对的两侧分别贴合有第一重工胶黏剂层、第二重工胶黏剂层；所述基材层中至少包括泡棉层,所述泡棉层的厚度≥150μm；多重工胶带的剥离方法的步骤包括：从多重工胶带的端部沿其轴向方向切割泡棉层,使所述泡棉层分离为两部分；在所述泡棉层分离为两部分后,将所述第一重工胶黏剂层与所述第一部件分离,将所述第二重工胶黏剂层与所述第二部件分离。该多重工胶带结构简单,生产加工方便,并在剥离过程中不易断裂,能实现整体剥离,不产生残胶。(The invention discloses a multiplex adhesive tape and a stripping method thereof, wherein the multiplex adhesive tape comprises a base material layer, and a first multiplex adhesive layer and a second multiplex adhesive layer are respectively attached to two opposite sides of the base material layer; the substrate layer at least comprises a foam layer, and the thickness of the foam layer is more than or equal to 150 mu m; the method for peeling the multiplex adhesive tape comprises the following steps: cutting a foam layer from the end of the multiplex adhesive tape along the axial direction thereof to separate the foam layer into two parts; after the foam layer is separated into two parts, the first reworking adhesive layer is separated from the first part, and the second reworking adhesive layer is separated from the second part. The multi-worker adhesive tape is simple in structure, convenient to produce and process, not prone to breaking in the stripping process, capable of achieving overall stripping and free of adhesive residue.)

1. The utility model provides a multiple worker's sticky tape which characterized in that: the adhesive comprises a substrate layer, wherein a first reworking adhesive layer and a second reworking adhesive layer are respectively attached to two opposite sides of the substrate layer; the base material layer at least comprises a foam layer, and the thickness of the foam layer is more than or equal to 150 mu m.

2. The multiple work tape of claim 1, wherein: the foam layer is formed by at least one of sponge, EPDM foam, polyacrylate foam, PE foam, EVA foam, CR foam, silica gel foam, NBR foam and polyolefin foam.

3. The multiple work tape of claim 1, wherein: the substrate layer further comprises at least one of a foaming adhesive, plant fiber cloth and chemical fiber cloth.

4. The multiple work tape of claim 1, wherein: when the foam layer is open-pore foam, the first reworking adhesive layer and the second reworking adhesive layer respectively adopt one of a drawing reworking adhesive or a solvent reworking adhesive; when the foam layer is closed-cell foam, the first reworking adhesive layer and the second reworking adhesive layer are both made of drawing reworking adhesives.

5. The multiple work tape of claim 4, wherein: the solvent reworking adhesive comprises an organic solvent type reworking adhesive and a hydrosolvent type reworking adhesive; the organic solvent type reworking adhesive is a rubber type adhesive, and the water-soluble type reworking adhesive is a water-soluble polyacrylate adhesive.

6. A method for peeling a multi-ply tape, which comprises the steps of:

cutting the foam layer from the end of the multiplex adhesive tape along the axial direction thereof to separate the foam layer into two parts; the reworked adhesive tape is arranged between a first component and a second component, a first reworked adhesive layer is attached to the first component, and a second reworked adhesive layer is attached to the second component;

after the foam layer is separated into two parts, the first reworking adhesive layer is separated from the first part, and the second reworking adhesive layer is separated from the second part.

7. The method for peeling multiplex adhesive tape according to claim 6, wherein: the cutting tool for cutting the foam layer comprises a sheet or a wire, the thickness of the sheet being < 150 μm or the diameter of the wire being < 150 μm.

8. The method for peeling multiplex adhesive tape according to claim 6, wherein: "separating the first rework adhesive layer from the first part, separating the second rework adhesive layer from the second part" includes a pull-apart and a debond-apart; and when the heavy industry adhesive is a drawing heavy industry adhesive, drawing separation is adopted, and when the heavy industry adhesive is a solvent heavy industry adhesive, debonding separation is adopted.

9. The method for peeling multiplex adhesive tape according to claim 8, wherein: the step of debonding and separating comprises:

absorbing a debonding agent from the cut substrate layer;

standing for a preset time after the substrate layer absorbs the debonding agent, and separating the first reworking adhesive layer from the first part or separating the second reworking adhesive layer from the second part;

wherein the viscosity breaking agent is an organic solvent or a water solvent.

10. The method for peeling multiplex adhesive tape according to claim 9, wherein: the preset time is 0-60 min.

Technical Field

The invention relates to the field of adhesive tapes, in particular to a multiplex adhesive tape and a stripping method thereof.

Background

The double-sided adhesive tape is used for fixing common double-sided adhesive tapes in consumer electronics such as smart phones, flat panels, pen-type displays, lamp panels, display glass modules and polarizer modules and in conventional civil and commercial use. In order to meet the requirements of reworking or after-sales repair of electronic products and consumer and commercial products, double-sided adhesive tapes with reworking characteristics are adopted. Such as a draw rework tape or a solvent rework tape.

The problem of reworking or after-sale repair of electronic products is solved to a certain extent by drawing the reworked adhesive tape, but the problem of breakage of the adhesive tape at a high probability still exists by drawing the reworked adhesive tape, the difficulty of reworking is increased after the adhesive tape is broken, a certain handle space needs to be reserved in the product by drawing the reworked adhesive tape, and the development of thin products is not facilitated.

In the publication of: CN111471418A, invention name: a reworkable adhesive, a reworkable adhesive tape and a method for peeling the adhesive tape are disclosed in Chinese patent application. This solvent reworking sticky tape need form the recess through the cross cutting mode in the sticky tape, and the recess width is narrower, and is in large quantity, can have the loaded down with trivial details problem of incomplete gluey clearance when reworking.

Disclosure of Invention

In order to overcome the defects in the prior art, the embodiment of the invention provides a multiplex adhesive tape and a stripping method thereof, which have the advantages of simple structure, convenience in production and processing, difficulty in breaking in the stripping process, capability of realizing integral stripping and no generation of residual adhesive.

In order to achieve the purpose, the invention adopts the technical scheme that: the multiplex adhesive tape comprises a base material layer, wherein a first multiplex adhesive layer and a second multiplex adhesive layer are respectively attached to two opposite sides of the base material layer; the base material layer at least comprises a foam layer, and the thickness of the foam layer is more than or equal to 150 mu m.

In the technical scheme, the foam layer is formed by at least one of sponge, EPDM foam, polyacrylate foam, PE foam, EVA foam, CR foam, silica gel foam, NBR foam and polyolefin foam.

In the above technical scheme, the base material layer further comprises at least one of a foaming adhesive, a plant fiber cloth and a chemical fiber cloth.

In the above technical scheme, the first rework adhesive layer and the second rework adhesive layer are respectively one of a drawing rework adhesive or a solvent rework adhesive.

In the technical scheme, the solvent reworking adhesive comprises an organic solvent reworking adhesive and a water-soluble reworking adhesive; the organic solvent type reworking adhesive is a rubber type adhesive, and the water-soluble type reworking adhesive is a water-soluble polyacrylate adhesive.

A method for peeling off a multiplex adhesive tape, which adopts the multiplex adhesive tape, comprises the following steps:

cutting the foam layer from the end of the multiplex adhesive tape along the axial direction thereof to separate the foam layer into two parts; the reworked adhesive tape is arranged between a first component and a second component, a first reworked adhesive layer is attached to the first component, and a second reworked adhesive layer is attached to the second component;

after the foam layer is separated into two parts, the first reworking adhesive layer is separated from the first part, and the second reworking adhesive layer is separated from the second part.

In the technical scheme, the cutting tool for cutting the foam layer comprises a sheet or a wire, wherein the thickness of the sheet is less than 150 mu m or the diameter of the wire is less than 150 mu m.

In the above technical solution, "separating the first rework adhesive layer from the first part, and separating the second rework adhesive layer from the second part" includes separation by pulling and separation by debonding; and when the heavy industry adhesive is a drawing heavy industry adhesive, drawing separation is adopted, and when the heavy industry adhesive is a solvent heavy industry adhesive, debonding separation is adopted.

In the above technical solution, the step of separating the debonding includes:

absorbing a debonding agent from the cut substrate layer;

standing for a preset time after the substrate layer absorbs the debonding agent, and separating the first reworking adhesive layer from the first part or separating the second reworking adhesive layer from the second part;

wherein the viscosity breaking agent is an organic solvent or a water solvent.

In the above technical scheme, the preset time is 0min to 60 min.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

1. the multiplex adhesive tape comprises a substrate layer, wherein the substrate layer at least comprises a foam layer, the thickness of the foam layer is more than or equal to 150 mu m, when needing to be duplicated, the foam layer can be cut into two parts along the axial direction of the foam layer by a cutting tool, so that the multiplex adhesive tape is separated from the layer, and then the multiplex adhesive tape is separated from an adherend from one side, and the adherend is prevented from being deformed.

2. The reworked adhesive layer is bonded on the base material layer, so that die cutting processing of the reworked adhesive layer can be reduced, processing steps are simplified, processing efficiency is improved, and the adhesive tape is ensured to meet the part bonding requirements through the mechanical functions of pushing force, drawing force, shearing resistance and the like. And because the reworked adhesive layer does not need die cutting processing to form a groove, the reworked adhesive layer in the reworked adhesive tape keeps a plane structure integrally connected, when the reworked adhesive layer is separated from an adherend, the reworked adhesive layer can be integrally stripped at one time, and the stripping efficiency is improved.

3. The first reworking adhesive layer and the second reworking adhesive layer can adopt a drawing reworking adhesive or a solvent reworking adhesive, the solvent reworking adhesive can adopt an organic solvent reworking adhesive or an aqueous solvent reworking adhesive, and the reworking adhesives with different properties can be selected as the first reworking adhesive layer and the second reworking adhesive layer according to the material characteristics of an adherend, so that the multiple adhesive tapes formed by processing are various in types and wide in application range.

In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

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 or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a first schematic view of a multi-ply tape with open-cell foam as a substrate layer according to a first embodiment of the invention;

FIG. 2 is a schematic view of a second embodiment of a multi-ply tape with open-cell foam as a substrate layer;

FIG. 3 is a schematic view of a first multi-ply tape with a substrate layer made of a middle-closed-pore foam according to a second embodiment of the present invention;

FIG. 4 is a second schematic view of a multi-ply tape with a substrate layer made of a middle-closed-pore foam according to a second embodiment of the present invention;

fig. 5 is a schematic view of a multi-ply tape with a two-layer structure as a substrate layer in the third embodiment of the invention.

Reference numerals of the above figures: 1. a substrate layer; 2. a first rework adhesive layer; 3. a second rework adhesive layer; 4. and (5) a release material layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The multiplex adhesive tape comprises a base material layer 1, wherein a first multiplex adhesive layer 2 and a second multiplex adhesive layer 3 are respectively attached to two opposite sides of the base material layer 1; the substrate layer 1 at least comprises a foam layer, and the thickness of the foam layer is more than or equal to 150 microns. The first reworking adhesive layer 2 and the second reworking adhesive layer 3 deviate from one side of the base material layer 1 is laminated with a release material layer 4. The release material layer 4 can be a single-layer release film or a double-layer release film. The foam layer with the thickness of more than or equal to 150 mu m in the substrate layer 1 can be cut and separated into two parts along the axial direction of the foam layer, so that the first part and the second part bonded by the multi-purpose adhesive tape can be separated, and the multi-purpose adhesive tape can be further separated from an adherend from one side.

In both of the first and second embodiments, only the foam layer is provided as the base material layer 1. In the third embodiment, the foam layer and the foaming adhesive are laminated to form the substrate layer 1.

The first embodiment is as follows: referring to fig. 1-2, the multiplex adhesive tape comprises a substrate layer 1 made of open-cell foam, wherein the two opposite sides of the open-cell foam are respectively attached with a first multiplex adhesive layer 2 and a second multiplex adhesive layer 3. The thickness of the foam layer formed by foam is more than or equal to 150 mu m.

Wherein, the foam layer can be polyurethane foam. Specifically, the foam layer may be formed of at least one of sponge, EPDM foam, polyacrylate foam, PE foam, EVA foam, CR foam, silica gel foam, NBR foam, and polyolefin foam. Referring to fig. 1, the open-cell foam may be open-cell polyurethane foam. In order to cut the foam layer into two parts along the axial direction of the foam layer when reworking, the thickness of the foam layer is preferably 200 to 1000 μm. Meanwhile, in order to realize the thinning of the multiplex adhesive tape and the small occupied space, the thickness of the foam layer is more preferably 200 to 300 μm.

The first rework adhesive layer 2 may be a draw rework adhesive or a solvent rework adhesive. The second rework adhesive may be a draw rework adhesive or a solvent rework adhesive. The solvent reworking adhesive comprises an organic solvent reworking adhesive and a hydrosol reworking adhesive. The drawing reworking adhesive is mainly used for drawing debonding reworking. The organic solvent type reworking adhesive is mainly used for debonding and reworking by an organic solvent. The aqueous solution type reworking adhesive is mainly used for reworking through hydrosolvent debonding. The drawing reworking adhesive and the organic solvent reworking adhesive are synthetic rubber adhesives. The water-soluble reworking adhesive can be a modified polyacrylate adhesive.

Preferably, the first reworking adhesive layer 2 and the second reworking adhesive layer 3 are the same type of reworking adhesive. If the drawing rework adhesive is attached to the two sides of the open-pore polyurethane foam, or the solvent rework adhesive is attached to the two sides of the open-pore foam. The type of the rework adhesive may be determined according to the use environment, the properties of the adherend, and the like. The thicknesses of the first reworking adhesive layer 2 and the second reworking adhesive layer 3 can be set to be 1-1000 μm. Preferably, the thicknesses of the first reworking adhesive layer 2 and the second reworking adhesive layer 3 can be set to be 100-200 μm.

The synthetic rubber adhesive comprises the following components in parts by weight:

95 to 105 parts of synthetic rubber,

100 to 110 parts of tackifying resin,

8-12 parts of nitrile rubber,

0.5 to 1.5 parts of age resister,

10-20 parts of color paste,

210-230 parts of a solvent.

Wherein the synthetic rubber comprises at least one of SBS block copolymer, SIS block copolymer, SEBS block copolymer, SEP block copolymer, and (EP) n. The tackifying resin comprises at least one of petroleum resin, rosin ester resin, terpene phenol resin, terpene resin hydrogenated rosin ester resin, hydrogenated or semi-hydrogenated petroleum resin.

When the organic solvent type heavy industry adhesive is synthesized, liquid petroleum resin with the softening point of-20 ℃ is preferably selected to provide the initial adhesion of the product. Hydrogenated petroleum-based resins having a softening point of 85 ℃ are preferred to provide adhesion to the product while having a small effect on the initial adhesion of the product. The special tackifying resin with a low softening point is introduced into the tackifying resin, and has high polarity, so that the solubility of the special tackifying resin in a polar solvent is higher than that of the conventional tackifying resin, and the product can be quickly debonded in a chemical agent. Because of the availability and low toxicity of alcoholic solvents, tackifying resins that are more sensitive to alcoholic solvents are preferred.

The anti-aging agent comprises at least one of a phenolic antioxidant, a phosphite antioxidant, a sulfur-containing antioxidant and a compound antioxidant.

The modified polyacrylate adhesive comprises the following components in parts by weight:

95-105 parts of water-soluble polyacrylate pressure-sensitive adhesive;

1-100 parts of a solvent;

0.1-4 parts of curing agent.

The water-soluble polyacrylate pressure-sensitive adhesive is prepared from the following raw materials in parts by weight: 60-80 parts of an acrylate soft monomer; 0-5 parts of an acrylate hard monomer; 15-30 parts of a functional monomer; 5-10 parts of a reactive anionic emulsifier; 0.3-0.5 part of an initiator; 100-150 parts of an organic solvent; 5-10 parts of a plasticizer and 10-16 parts of a pH regulator. The curing agent is at least one of isocyanate curing agent, epoxy curing agent, metal salt curing agent and aziridine curing agent. Epoxy curing agents and metal salt curing agents are preferred. The solvent is ethanol or ethanol-methanol mixed solution, preferably ethanol solution.

Example two: referring to fig. 3 to 4, a structure of a multi-ply tape in the second embodiment is substantially similar to that of the first embodiment, and the difference is that: closed-cell foam was used as the base material layer 1. The foam layer formed by closed-cell foam can also meet the cutting requirement, thereby facilitating the rework. Such as closed cell polyurethane foam. In the multiplex adhesive tape, the first multiplex adhesive layer 2 and the second multiplex adhesive layer 3 both adopt drawing multiplex adhesives.

Example three: referring to fig. 5, a multi-ply tape according to a third embodiment is substantially similar to the first embodiment in structure, except that:

the substrate layer 1 is a double-layer structure. The base material layer 1 comprises at least one of a foaming adhesive, a plant fiber cloth and a chemical fiber cloth outside the foam layer. For example, the substrate layer 1 may include open-cell foam and a foaming adhesive which are stacked. Besides the foaming adhesive, the plant fiber cloth and the chemical fiber cloth, the unfoamed adhesive can be laminated. Specifically, the substrate layer 1 may be formed by laminating open-cell polyurethane foam and a water-soluble polyacrylate adhesive. The substrate layer 1 may be provided as a three-layer structure or the like.

The plant fiber cloth can be selected from cotton base cloth, paper-based non-woven fabric, flax cloth and the like. The cotton base cloth comprises cotton base woven cloth and cotton base non-woven cloth. The chemical fiber cloth can be selected from high sweat-absorbing and breathable PBT/PET blended hollow and special-shaped hollow microporous fiber cloth, PET water-absorbing fiber cloth, PVA water-absorbing fiber cloth and the like.

A method for peeling off a multi-industrial adhesive tape, which is any one of the first to third embodiments. The multi-functional adhesive tape is arranged between the first component and the second component and used for bonding the first component and the second component. For example, the mobile phone battery and the frame body are bonded by the multi-layer adhesive tape. And (3) attaching the first reworked adhesive layer 2 in the multiple-reworked adhesive tape to the first component, and attaching the second reworked adhesive layer 3 in the multiple-reworked adhesive tape to the second component.

The method for peeling the multiplex adhesive tape comprises the following steps:

and cutting the foam layer from the end part of the multi-ply tape along the axial direction of the multi-ply tape to separate the foam layer into two parts.

After the foam layer is separated into two parts, the first reworking adhesive layer 2 is separated from the first part, and the second reworking adhesive layer 3 is separated from the second part.

The cutting tool for cutting the foam layer comprises a sheet or a wire, the thickness of the sheet being < 150 μm or the diameter of the wire being < 150 μm. The sheet material can be selected from a blade, a cardboard sheet and the like. The wire can be silk thread, fishing line, etc.

Wherein the "separating the first rework adhesive layer 2 from the first part, and the second rework adhesive layer 3 from the second part" includes a pull-off separation and a debond separation. And when the heavy industry adhesive is a drawing heavy industry adhesive, drawing separation is adopted, and when the heavy industry adhesive is a solvent heavy industry adhesive, debonding separation is adopted.

The step of debonding and separating comprises:

the debonding agent is absorbed by the cut substrate layer 1. Specifically, a certain amount of the debonding agent is dropped on the cut foam layer. The viscosity breaking agent is an organic solvent or a water solvent. The organic solvent comprises at least one of alcohol solvent, ethyl acetate, banana oil and stain removing oil.

And standing for a preset time after the substrate layer 1 absorbs the debonding agent, and separating the first reworking adhesive layer 2 from the first part or separating the second reworking adhesive layer 3 from the second part.

The preset time can be set to be 0-60 min, so that the debonding agent can have sufficient time to flow along with the internal pores of the substrate layer 1 and contact with the first heavy industry adhesive layer 2 and the second heavy industry adhesive layer 3, and the debonding effect is achieved. Preferably, the preset time is 1min to 10 min. The preset time is adjusted according to the material of the base material layer 1, the thickness of the base material layer 1 and the like. If be equipped with the cotton base cloth in the substrate layer 1, because the water absorption capacity of cotton base cloth is good, can absorb the solvent fast, consequently, can use shorter predetermineeing for a long time to improve the efficiency of peeling off.

Because of the hydrophobic nature of the synthetic rubber adhesive, the synthetic rubber adhesive can be debonded using organic or aqueous solvents. The reworked adhesive of the water solution type needs to be debonded by using a water solvent.

The method for peeling the multiplex adhesive tape shown in fig. 1 comprises the following specific steps:

the open-cell urethane foam is separated into two parts by cutting from the end of the open-cell urethane foam along the axial direction thereof with the cutting tool, thereby separating the first member and the second member bonded thereto.

And (3) dropping an debonding agent into the polyurethane foam remained on the first part and the second part, and reducing the viscosity of the solvent reworking adhesive, so that the first reworking adhesive layer 2 is separated from the first part, and the second reworking adhesive layer 3 is separated from the second part.

The first member and the second member are separated by separating the layers of the multi-ply tape bonded between the first member and the second member, and the first multi-ply adhesive layer 2 bonded to the first member or the second multi-ply adhesive layer 3 bonded to the second member is separated from one side, whereby the adherend can be prevented from being deformed.

The base material layer 1 is made of different materials and different thicknesses, and the heavy industry adhesive has different components and proportions, so that the performance of the manufactured multi-industry adhesive tape is different, and the stripping methods required to be used are different. The properties of the prepared multi-ply tape and the peeling effect of the multi-ply tape can be tested by the following methods.

1. Thickness, adhesion and initial adhesion testing were as follows:

test method of GBT7125-2014 adhesive tape thickness;

GBT2792-2014 adhesive tape peel strength test method;

GBT4852-2002 pressure-sensitive adhesive tape initial tack test method (rolling ball method).

2. Testing of drawing force: a piece of multiplex adhesive tape with the thickness of 25mm × 25mm is stuck between the T-shaped block and the flat plate, the pressure is 3bar for 3s, and then the multi-piece adhesive tape is placed in an environment with the temperature of 23 +/-2 ℃ and the RH of 50 +/-10% for standing for 72 hours. And standing for 72 hours, fixing the flat plate by using a tension jig, hooking the upper T-shaped block by using an S-shaped hook, testing vertical drawing force of the upper side, the lower side, the left side and the right side, and recording the force for drawing the T-shaped block.

XY transverse impact strength test: the test was carried out using a DuPont impact tester (Eimpact ═ m × g × h; m:150 g; g: 9.8N/kg; h: height) under the following test conditions: testing the plate: PC + PC; pressure: 10bar/5 s; standing time: RT/24 hrs; the testing process comprises the following steps: starting at 5cm, lifting every 5cm until the sample is destroyed; test environment 23 ± 2 ℃, (50 ± 10)% r.h.; test unit: J. the test method comprises the following steps: the multiplex adhesive tape is arranged between two PC substrates and then placed on a DuPont impact tester for testing.

The following is further illustrated by a set of experimental data:

the substrate layer 1 is made of open-cell polyurethane foam, and the first reworking adhesive layer 2 and the second reworking adhesive layer 3 are made of synthetic rubber adhesives.

The synthetic rubber adhesive in the first example was mixed in a stirring tank to obtain a 50% liquid rubber adhesive. Coating dry glue with the thickness of 100 mu m on the release coating surface of the release material, then respectively attaching the release material to two opposite sides of the open-pore polyurethane foam, finally attaching the release material by using a double-layer single-side silicon-coated release material, and rolling to obtain a test sample.

The test data of the test sample is shown in the following table I:

watch 1

The test results are shown in table two below:

watch two

The test results in table two show that: the foam is used as the base material layer 1, and the foam can be divided into two parts along the axial direction thereof by a cutting method on the basis of ensuring the peeling force, the initial adhesion force and the XY transverse impact strength of the adhesive tape, so that the adhesive tape can be easily peeled from the component.

The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.