CN113621316A - Hot melt adhesive tape for bonding speaker mesh and preparation method thereof - Google Patents
Hot melt adhesive tape for bonding speaker mesh and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/10—Adhesives in the form of films or foils without carriers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/35—Heat-activated
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/326—Applications of adhesives in processes or use of adhesives in the form of films or foils for bonding electronic components such as wafers, chips or semiconductors
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/304—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being heat-activatable, i.e. not tacky at temperatures inferior to 30°C
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
Abstract
The invention belongs to the technical field of hot melt adhesive tapes, and particularly relates to a hot melt adhesive tape for bonding a horn mesh and a preparation method thereof, wherein the hot melt adhesive tape comprises a release layer, a hot melt adhesive layer, a pressure sensitive adhesive layer and a release film layer; the preparation method comprises the following steps: (1) preparing a semi-finished product; (2) preparing a hot melt adhesive tape; (3) curing to obtain the finished product. The hot melt adhesive tape prepared by the method is soft in material, can be perfectly attached to any curved surface or special-shaped speaker mesh material, has an excellent extinction effect, does not influence the original attractiveness of an electronic product after being attached to a speaker mesh, is compounded by adopting the hot melt adhesive film and the pressure sensitive adhesive, does not need to be additionally attached to other base materials, has adjustable thickness, reduces the cost and simplifies the process.
Description
Technical Field
The invention belongs to the technical field of adhesive tapes, and particularly relates to a hot melt adhesive tape for bonding a speaker mesh and a preparation method thereof.
Background
The hot melt adhesive tape for speaker mesh is mainly applied to speaker meshes of various types and materials, and has special requirements on the appearance and functionality of the adhered speaker mesh. The hot melt adhesive tape used for adhering the speaker mesh can firmly adhere the speaker mesh with the concave-convex and rough surface only by exerting the excellent adhesive force after high-temperature hot pressing, and the adhesive surface can not be brightened after the speaker mesh and the hot melt adhesive tape are firmly adhered after hot pressing, so that the integral attractiveness of the product is prevented from being damaged, and the visual trouble of a user when the user uses an electronic product is also avoided.
Present hot melt adhesive tape for speaker mesh hardly reaches the special requirement in the aspect of above outward appearance and functionality simultaneously, when being used for the product, there is difficult location or positioning deviation's problem, all kinds of electronic product that use the speaker mesh are being towards the direction development of frivolousization simultaneously, the molding of speaker mesh is also more and more diversified, the cambered surface design has become a design form that the speaker mesh is comparatively commonly used, however, the hot melt adhesive tape on the existing market is not fully satisfactory to the adhesion force and the endurance of cambered surface pasting, urgent need to be improved.
Patent CN 201220047696X discloses a "large-area initially-bonded thermosol tape for speaker mesh, which comprises black cotton paper, wherein one surface of the black cotton paper is provided with an acrylic glue layer, an initially-bonded thermosol layer is arranged on the acrylic glue layer, and a release film or release paper is arranged on the initially-bonded thermosol layer; the other side of the black cotton paper is provided with an acrylic glue layer, and the acrylic glue layer is provided with single-silicon release paper. The utility model discloses a large tracts of land loudspeaker net is with just gluing hot melt adhesive tape, have the initial viscous performance when keeping hot melt adhesive performance, easily fix a position when being used for large tracts of land product, can produce good adhesive force and cohesive force after the hot pressing, black gloss is also eliminated simultaneously, can exert high adhesive force in the face of the rough and unsmooth surface of loudspeaker net, hot melt adhesive layer is through hot pressing, can produce dull lustrous sense black face, laminate behind loudspeaker net, do not influence the original pleasing to the eye of electronic product. Although the patent solves the problems of easy positioning and no influence on the original appearance of the electronic product, the defects of troublesome working procedure, thicker product and higher cost exist.
Disclosure of Invention
One of the purposes of the invention is to provide a hot melt adhesive tape for bonding a speaker mesh, which is convenient for die cutting and positioning, has high cross-linking strength and bonding strength and good temperature resistance, is suitable for any curved speaker mesh, has a matt black surface, does not influence the original beauty of electronic products, and has adjustable product thickness, so as to solve the problems in the background technology.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
a hot melt adhesive tape for bonding a horn mesh comprises a release layer, a hot melt adhesive layer, a pressure sensitive adhesive layer and a release film layer, wherein the hot melt adhesive layer is coated on the release layer, the pressure sensitive adhesive layer is coated on the release film layer, and the hot melt adhesive layer is in hot-press fit with the pressure sensitive adhesive layer; the release layer is a matte release layer, the hot melt adhesive layer is a matte black hot melt adhesive layer, the thickness of the release layer is 50-100 mu m, the thickness of the hot melt adhesive layer is 25-70 mu m, the thickness of the pressure-sensitive adhesive layer is 30-80 mu m, and the thickness of the release film layer is 75 mu m.
Another object of the present invention is to provide a method for preparing the hot-melt adhesive tape for bonding a horn mesh, which has simple process, easy operation and low cost, the method comprising the steps of:
(1) adding a latent curing agent, black paste and matting powder into the hot melt adhesive, dispersing at a high speed, filtering, coating on a release material, completely drying by an oven, and rolling from the back to obtain a semi-finished product;
(2) adding a curing agent, a solvent and black slurry into the pressure-sensitive adhesive, stirring at a high speed, filtering, coating on a release film, completely drying by an oven, hot-pressing and laminating with the semi-finished product, and rolling to obtain a hot-melt adhesive tape;
(3) and (3) placing the hot melt adhesive tape in a greenhouse at 40 ℃ for completely curing, slitting and packaging to obtain the hot melt adhesive tape.
As an improvement, in the step (1), the hot melt adhesive is a polyurethane hot melt adhesive.
Preferably, the polyurethane hot melt adhesive is a reactive polyurethane hot melt adhesive.
As an improvement, in the step (1), an accelerator, a thickening agent and other auxiliaries can be added into the hot melt adhesive. The accelerant is one or more of di-n-butyltin dilaurate, triethylenediamine, stannous octoate and the like. The thickening agent is one or more of fumed silica, diatomite, molecular sieve and silica gel inorganic thickening agents.
As an improvement, in the step (1), the release material is a matte OPP film, a matte PP synthetic paper, a matte pearlescent paper, a matte CPP film or a matte release paper.
As a modification, in the step (2), the pressure-sensitive adhesive is acrylate pressure-sensitive adhesive.
As an improvement, in the step (2), the release film is silicone release paper or silicone release film. Preferably, the organic silicon release film is a PET release film.
As an improvement, in the step (2), the solvent is ethyl acetate, toluene or butanone.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
the hot melt adhesive tape prepared by the method is soft in material, and can perfectly fit any curved surface or special-shaped speaker net material; the hot melt adhesive film is compounded with the pressure-sensitive adhesive, other base materials do not need to be additionally attached, the thickness of the product is adjustable, the cost is reduced, and the process is simplified.
Drawings
FIG. 1 is a schematic structural view of a hot melt adhesive tape for bonding a speaker mesh provided by the present invention;
wherein: 1-a release layer, 2-a hot melt adhesive layer, 3-a pressure sensitive adhesive layer and 4-a release film layer.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1, a hot melt adhesive tape for bonding a speaker mesh comprises a release layer 1, a hot melt adhesive layer 2, a pressure sensitive adhesive layer 3 and a release film layer 4, wherein the hot melt adhesive layer 2 is coated on the release layer 1, the pressure sensitive adhesive layer 3 is coated on the release film layer 4, and the hot melt adhesive layer 2 is in hot-press fit with the pressure sensitive adhesive layer 3.
Example 1
(1) Adding 5 parts of blocked isocyanate curing agent, 3 parts of aqueous black paste and 2 parts of fumed silica matting powder into 100 parts of aqueous polyurethane heat-activated resin, placing the mixture in a container, dispersing at a high speed, and filtering to obtain thermosetting polyurethane glue;
(2) coating the prepared thermosetting polyurethane glue on a matte OPP film by adopting a knife edge or CED (continuous oriented yarn) coating mode, wherein the thickness of the matte OPP film is 50 mu m, the thickness of the coating is 25 mu m, the temperature of an oven is set to be 60 ℃, 80 ℃, 100 ℃, 110 ℃, 85 ℃, 60 ℃, the coating speed is 20m/min, and after the coating is completely dried, the coating is rolled from the back surface to prepare a black matte thermosetting polyurethane layer (semi-finished product);
(3) taking 100 parts of high-viscosity acrylate pressure-sensitive adhesive glue, 2.5 parts of isocyanate curing agent, 3 parts of black slurry and 10-40 parts of solvent, placing the mixture in a container, dispersing at high speed, and filtering to obtain acrylate pressure-sensitive adhesive;
(4) coating the prepared acrylate pressure-sensitive adhesive on a PET release film by adopting a knife edge or CED (continuous oriented dispersion) coating mode, wherein the thickness of the PET release film is 75 micrometers, the thickness of the coated adhesive is 30 micrometers, the temperature of an oven is set to be 60 ℃, 80 ℃, 100 ℃, 110 ℃, 85 ℃, 60 ℃, and the coating speed is 20m/min, the prepared acrylate pressure-sensitive adhesive is attached to the prepared black matte thermosetting polyurethane layer after being completely dried, and after rolling, curing is carried out for 3 days in a greenhouse at 40 ℃.
Example 2
(1) Adding 5 parts of blocked isocyanate curing agent, 3 parts of aqueous black paste and 2 parts of fumed silica matting powder into 100 parts of aqueous polyurethane heat-activated resin, placing the mixture in a container, dispersing at a high speed, and filtering to obtain thermosetting polyurethane glue;
(2) coating the prepared thermosetting polyurethane glue on a matte CPP film by adopting a knife edge or CED (continuous oriented dispersion deposition) coating mode and the like, wherein the thickness of the matte CPP film is 50 mu m, the thickness of the coating is 45 mu m, the temperature of an oven is set to be 60 ℃, 80 ℃, 100 ℃, 110 ℃, 85 ℃, 60 ℃, and the coating speed is 10m/min, and after the coating is completely dried, the coating is rolled from the back surface to prepare a black matte thermosetting polyurethane layer (semi-finished product);
(3) taking 100 parts of high-viscosity acrylate pressure-sensitive adhesive glue, 2.5 parts of isocyanate curing agent, 3 parts of black slurry and 10-40 parts of solvent, placing the mixture in a container, dispersing at high speed, and filtering to obtain acrylate pressure-sensitive adhesive;
(4) coating the prepared acrylate pressure-sensitive adhesive on a PET release film by adopting a knife edge or CED (continuous oriented dispersion) coating mode, wherein the thickness of the PET release film is 75 micrometers, the thickness of the coated adhesive is 35 micrometers, the temperature of an oven is set to be 60 ℃, 80 ℃, 100 ℃, 110 ℃, 85 ℃, 60 ℃, and the coating speed is 20m/min, the prepared acrylate pressure-sensitive adhesive is attached to the prepared black matte thermosetting polyurethane layer after being completely dried, and after rolling, curing is carried out for 3 days in a greenhouse at 40 ℃.
Example 3
(1) Adding 8 parts of blocked isocyanate curing agent, 3 parts of aqueous black paste and 2 parts of fumed silica matting powder into 100 parts of aqueous polyurethane heat-activated resin, placing the mixture in a container, dispersing at a high speed, and filtering to obtain thermosetting polyurethane glue;
(2) coating the prepared thermosetting polyurethane glue on matte PP synthetic paper by adopting a knife edge or CED (continuous oriented dispersion) coating mode and the like, wherein the thickness of the matte PP synthetic paper is 100 mu m, the gluing thickness is 30 mu m, the temperature of an oven is set to be 60 ℃, 80 ℃, 100 ℃, 110 ℃, 85 ℃ and 60 ℃, the coating speed is 14m/min, and after the paper is completely dried, the paper is rolled from the back surface to prepare a black matte thermosetting polyurethane layer (a semi-finished product);
(3) taking 100 parts of high-viscosity acrylate pressure-sensitive adhesive glue, 3.5 parts of isocyanate curing agent, 3 parts of black slurry and 10-40 parts of solvent, placing the mixture in a container, dispersing at high speed, and filtering to obtain acrylate pressure-sensitive adhesive;
(4) coating the prepared acrylate pressure-sensitive adhesive on a PET release film by adopting a knife edge or CED (continuous oriented dispersion) coating mode, wherein the thickness of the PET release film is 75 micrometers, the thickness of the coated adhesive is 30 micrometers, the temperature of an oven is set to be 60 ℃, 80 ℃, 100 ℃, 110 ℃, 85 ℃, 60 ℃, and the coating speed is 22m/min, the prepared acrylate pressure-sensitive adhesive is attached to the prepared black matte thermosetting polyurethane layer after being completely dried, and after rolling, curing is carried out for 3 days in a greenhouse at 40 ℃.
Example 4
(1) Adding 8 parts of blocked isocyanate curing agent, 3 parts of aqueous black paste and 2 parts of fumed silica matting powder into 100 parts of aqueous polyurethane heat-activated resin, placing the mixture in a container, dispersing at a high speed, and filtering to obtain thermosetting polyurethane glue;
(2) coating the prepared thermosetting polyurethane glue on matte pearlescent paper by adopting a knife edge or CED (continuous oriented dispersion) coating mode and the like, wherein the thickness of the matte pearlescent paper is 80 mu m, the coating thickness is 50 mu m, the temperature of an oven is set to be 60 ℃, 80 ℃, 100 ℃, 110 ℃, 85 ℃, 60 ℃, the coating speed is 10m/min, and after the thermosetting polyurethane glue is completely dried, the black matte thermosetting polyurethane layer (semi-finished product) is prepared by rolling from the back surface;
(3) taking 100 parts of high-viscosity acrylate pressure-sensitive adhesive glue, 3.5 parts of isocyanate curing agent, 3 parts of black slurry and 10-40 parts of solvent, placing the mixture in a container, dispersing at high speed, and filtering to obtain acrylate pressure-sensitive adhesive;
(4) coating the prepared acrylate pressure-sensitive adhesive on a PET release film by adopting a knife edge or CED (continuous oriented dispersion) coating mode, wherein the thickness of the PET release film is 75 micrometers, the thickness of the coated adhesive is 40 micrometers, the temperature of an oven is set to be 60 ℃, 80 ℃, 100 ℃, 110 ℃, 85 ℃, 60 ℃, and the coating speed is 18m/min, the prepared acrylate pressure-sensitive adhesive is attached to the prepared black matte thermosetting polyurethane layer after being completely dried, and after rolling, curing is carried out for 3 days in a greenhouse at 40 ℃.
Example 5
(1) Adding 8 parts of blocked isocyanate curing agent, 3 parts of aqueous black paste and 2 parts of fumed silica matting powder into 100 parts of aqueous polyurethane glue, placing the mixture in a container, dispersing at a high speed, and filtering to obtain thermosetting polyurethane glue;
(2) coating the prepared thermosetting polyurethane glue on a matte CPP film by adopting a knife edge or CED (continuous oriented dispersion deposition) coating mode and the like, wherein the thickness of the matte CPP film is 75 micrometers, the thickness of the coated glue is 40 micrometers, the temperature of an oven is set to be 60 ℃, 80 ℃, 100 ℃, 110 ℃, 85 ℃, 60 ℃, and the coating speed is 10m/min, and after the coating is completely dried, the coating is rolled from the back surface to prepare a black matte thermosetting polyurethane layer (semi-finished product);
(3) taking 100 parts of high-viscosity acrylate pressure-sensitive adhesive glue, 3.5 parts of isocyanate curing agent, 3 parts of black slurry and 10-40 parts of solvent, placing the mixture in a container, dispersing at high speed, and filtering to obtain acrylate pressure-sensitive adhesive;
(4) coating the prepared acrylate pressure-sensitive adhesive on a PET release film by adopting a knife edge or CED (continuous oriented dispersion) coating mode, wherein the thickness of the PET release film is 75 micrometers, the thickness of the coated adhesive is 40 micrometers, the temperature of an oven is set to be 60 ℃, 80 ℃, 100 ℃, 110 ℃, 85 ℃, 60 ℃, and the coating speed is 18m/min, the prepared acrylate pressure-sensitive adhesive is attached to the prepared black matte thermosetting polyurethane adhesive layer after being completely dried, and after rolling, curing is carried out for 3 days in a greenhouse at 40 ℃.
Example 6
(1) Adding 8 parts of blocked isocyanate curing agent, 3 parts of oily black paste and 2 parts of fumed silica matting powder into 100 parts of oily polyurethane glue, placing the mixture in a container, dispersing at a high speed, and filtering to obtain solvent type thermosetting polyurethane glue;
(2) coating the prepared thermosetting polyurethane glue on a matte OPP film by adopting a knife edge or CED (continuous oriented yarn) coating mode, wherein the thickness of the matte OPP film is 50 mu m, the thickness of the glue is 40 mu m, the temperature of an oven is set to be 60 ℃, 80 ℃, 100 ℃, 110 ℃, 85 ℃ and 60 ℃, the coating speed is 12m/min, and after the glue is completely dried, the glue is wound from the back side to prepare a black matte thermosetting polyurethane glue layer (a semi-finished product);
(3) taking 100 parts of high-viscosity acrylate pressure-sensitive adhesive glue, 3.5 parts of isocyanate curing agent, 3 parts of black slurry and 10-40 parts of solvent, placing the mixture in a container, dispersing at high speed, and filtering to obtain acrylate pressure-sensitive adhesive;
(4) coating the prepared acrylate pressure-sensitive adhesive on a PET release film by adopting a knife edge or CED (continuous oriented dispersion) coating mode, wherein the thickness of the PET release film is 75 micrometers, the thickness of the coated adhesive is 55 micrometers, the temperature of an oven is set to be 60 ℃, 80 ℃, 100 ℃, 110 ℃, 85 ℃, 60 ℃, and the coating speed is 20m/min, the prepared acrylate pressure-sensitive adhesive is attached to the prepared black matte thermosetting polyurethane adhesive layer after being completely dried, and after rolling, curing is carried out for 3 days in a greenhouse at 40 ℃ to obtain the product.
Example 7
(1) Adding 8 parts of blocked isocyanate curing agent, 3 parts of aqueous black paste and 2 parts of fumed silica matting powder into 100 parts of polyurethane hot melt adhesive, placing the mixture in a container, dispersing at a high speed, and filtering to obtain thermosetting polyurethane glue;
(2) coating the prepared thermosetting polyurethane glue on a matte CPP film by adopting a knife edge or CED (continuous oriented dispersion deposition) coating mode and the like, wherein the thickness of the matte CPP film is 75 mu m, the thickness of the coating is 70 mu m, the temperature of an oven is set to be 60 ℃, 80 ℃, 100 ℃, 110 ℃, 85 ℃, 60 ℃, and the coating speed is 12m/min, and after the coating is completely dried, the coating is rolled from the back surface to prepare a black matte photo-thermal solid polyurethane glue layer (semi-finished product);
(3) taking 100 parts of high-viscosity acrylate pressure-sensitive adhesive glue, 3.5 parts of isocyanate curing agent, 3 parts of black slurry and 10-40 parts of solvent, placing the mixture in a container, dispersing at high speed, and filtering to obtain acrylate pressure-sensitive adhesive;
(4) coating the prepared acrylate pressure-sensitive adhesive on a PET release film by adopting a knife edge or CED (continuous absorption decomposition) coating mode, wherein the thickness of the PET release film is 75 micrometers, the thickness of the coated adhesive is 80 micrometers, the temperature of an oven is set to be 60 ℃, 80 ℃, 100 ℃, 110 ℃, 85 ℃, 60 ℃, and the coating speed is 20m/min, the prepared black matte photo-thermal solid polyurethane adhesive layer is attached after the drying is completed, and after the rolling is completed, the prepared acrylate pressure-sensitive adhesive is cured for 3 days in a greenhouse at 40 ℃.
The performance indexes of the hot melt adhesive tape for bonding the speaker mesh prepared in the embodiments 1 to 7 are shown in the following table 1:
| test items | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Example 7 |
| Thickness (mum) | 55 | 70 | 60 | 90 | 80 | 95 | 150 |
| Engineering surface Gloss (GU) | 4.3 | 4.2 | 4.4 | 4.3 | 4.1 | 4.2 | 4.5 |
| Adhesion of an engineering surface (g/25 mm) | 3125 | 4320 | 3546 | 5310 | 5122 | 5325 | 5790 |
| Adhesion of two engineering surfaces (g/25 mm) | 2110 | 2450 | 2243 | 2653 | 3024 | 3423 | 4478 |
| An engineering surface retention (mm) of 100 deg.C | 0.1 | 0.1 | 0.0 | 0.2 | 0.1 | 0.2 | 0.2 |
| The retention (mm) of the two engineering surfaces is 100 DEG C | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
TABLE 1
The data shown in table 1 show that the hot melt adhesive tape provided by the invention can be produced on the existing equipment, the product preparation process is simple, the process is simple and convenient, the operation is easy, the hot melt adhesive tape can be prepared by adding materials such as extinction powder, black slurry, filler, latent curing agent and the like into the heat activated polyurethane and coating the materials on a matte film, the hot curing adhesive layer with the matte effect can be prepared, and the adhesive tape product with different high adhesive power can be adjusted by the thickness of the hot curing adhesive layer and the thickness of the acrylic pressure-sensitive adhesive layer, and in addition, the hot melting layer has the advantages of low thermosetting temperature, high curing speed and the like.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (7)
1. A hot melt adhesive tape for bonding a horn mesh is characterized by comprising a release layer, a hot melt adhesive layer, a pressure sensitive adhesive layer and a release film layer, wherein the hot melt adhesive layer is coated on the release layer; the release layer is a matte release layer, the hot melt adhesive layer is a matte black hot melt adhesive layer, the thickness of the release layer is 50-100 mu m, the thickness of the hot melt adhesive layer is 25-70 mu m, the thickness of the pressure-sensitive adhesive layer is 30-80 mu m, and the thickness of the release film layer is 75 mu m.
2. The method for producing a hot-melt adhesive tape for bonding a horn net according to claim 1, characterized by comprising the steps of:
(1) adding a latent curing agent, black paste and matting powder into the hot melt adhesive, dispersing at a high speed, filtering, coating on a release material, completely drying by an oven, and rolling from the back to obtain a semi-finished product;
(2) adding a curing agent, a solvent and black slurry into the pressure-sensitive adhesive, stirring at a high speed, filtering, coating on a release film, completely drying by an oven, hot-pressing and laminating with the semi-finished product, and rolling to obtain a hot-melt adhesive tape;
(3) and (3) completely curing the hot melt adhesive tape at a certain temperature, cutting and packaging to obtain the hot melt adhesive tape.
3. The method for preparing the hot-melt adhesive tape for bonding the speaker nets according to claim 2, wherein in the step (1), the hot-melt adhesive is a polyurethane hot-melt adhesive.
4. The method for preparing the hot-melt adhesive tape for bonding the speaker nets according to claim 3, wherein the polyurethane hot-melt adhesive is a reactive polyurethane hot-melt adhesive.
5. The preparation method of the hot-melt adhesive tape for bonding the speaker nets according to claim 2, wherein in the step (1), the release material is a matte OPP film, a matte PP synthetic paper, a matte pearlescent paper, a matte CPP film or a matte release paper.
6. The method for producing the hot-melt adhesive tape for bonding a speaker mesh according to claim 2, wherein in the step (2), the pressure-sensitive adhesive is an acrylate pressure-sensitive adhesive.
7. The method for producing the hot-melt adhesive tape for bonding a horn net according to claim 2, wherein in the step (2), the release film is silicone release paper or silicone release film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111168212.7A CN113621316A (en) | 2021-10-08 | 2021-10-08 | Hot melt adhesive tape for bonding speaker mesh and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111168212.7A CN113621316A (en) | 2021-10-08 | 2021-10-08 | Hot melt adhesive tape for bonding speaker mesh and preparation method thereof |
Publications (1)
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| CN113621316A true CN113621316A (en) | 2021-11-09 |
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| CN202111168212.7A Pending CN113621316A (en) | 2021-10-08 | 2021-10-08 | Hot melt adhesive tape for bonding speaker mesh and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114872414A (en) * | 2022-02-23 | 2022-08-09 | 潍坊同有新材料科技有限公司 | Polyurethane foam with reinforcing layer and preparation method thereof |
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| KR20090027935A (en) * | 2007-09-13 | 2009-03-18 | (주)코레쉬텍 | Manufacturing prosess of adhesive mesh tape and adhesive mesh tape thereof |
| CN206188718U (en) * | 2016-09-26 | 2017-05-24 | 东莞市青峰新材料科技有限公司 | AB does not have substrate double faced adhesive tape |
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| CN110527440A (en) * | 2019-09-12 | 2019-12-03 | 天津伟景诺兰达科技有限公司 | A kind of black Hot melt adhesive tape and its preparation process and application |
| CN210193734U (en) * | 2019-05-05 | 2020-03-27 | 芜湖徽氏新材料科技有限公司 | Substrate-free hot-melt double-sided adhesive tape |
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| JPH05170220A (en) * | 1991-12-16 | 1993-07-09 | Nitto Denko Corp | Joint method of electronic part carrier cover tape |
| KR20090027935A (en) * | 2007-09-13 | 2009-03-18 | (주)코레쉬텍 | Manufacturing prosess of adhesive mesh tape and adhesive mesh tape thereof |
| CN206188718U (en) * | 2016-09-26 | 2017-05-24 | 东莞市青峰新材料科技有限公司 | AB does not have substrate double faced adhesive tape |
| CN109517533A (en) * | 2018-10-26 | 2019-03-26 | 烟台德邦科技有限公司 | A kind of lithium battery no substrate hot melt two-sided adhesive tape and preparation method thereof |
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| CN110527440A (en) * | 2019-09-12 | 2019-12-03 | 天津伟景诺兰达科技有限公司 | A kind of black Hot melt adhesive tape and its preparation process and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114872414A (en) * | 2022-02-23 | 2022-08-09 | 潍坊同有新材料科技有限公司 | Polyurethane foam with reinforcing layer and preparation method thereof |
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