278 results about "Acrylic adhesive" patented technology

The application provides a kind of fast curing acrylic glue and application, the fast curing acrylic glue is prepared from the following components according to weight parts: butyl nitrile rubber of terminal methacrylate is 13-17 parts;Polyurethane acrylate is 5-8 parts;Monofunctional acrylate monomer is 14-20 parts;Two functionality acrylate monomer is 7-13 parts;Three functionality acrylate monomer is 1-3 parts;Peroxide is 0.5-1.5 parts;Polymerization inhibitor is 0.01-0.04 parts;Coupling agent is 0.5-0.7 parts.The acrylic glue provided by the application has the advantages of fast curing, low volume resistivity after adding silver powder curing, good bonding strength, moderate elastic modulus, and can be used for photovoltaic tile conductive silver glue.

The invention discloses high-flexibility low-reflection flexible photovoltaic glass and a preparation method thereof, and belongs to the technical field of photovoltaic glass preparation. The preparation method comprises the following steps: carrying out cleaning and plasma activation treatment on a flexible glass substrate in an argon atmosphere at the power of 100W for 5 minutes; spin-coating a perovskite precursor solution and annealing to form an active layer, and depositing a transparent conductive layer and a back electrode; carrying out vacuum lamination packaging by adopting an EVA material; coating an acrylic acid adhesive transition layer; spin-coating ultraviolet cured SiO2 sol to form an inorganic coating; a PVDF / Ag / PVDF sandwich structure is constructed, the coverage rate of the nano-silver is 40-50%, and the PVDF layer contains 0.5% of antioxidant. After the flexible photovoltaic glass is circularly bent for 1000 times under the curvature radius of 5mm, the recovery rate is greater than 95%, the PAR transmittance is greater than 92.5%, the NIR reflectivity is greater than 89.3%, the reflectivity retention rate is greater than 96% after the flexible photovoltaic glass is aged for 100 hours at 85 DEG C / 85% RH, and the flexible photovoltaic glass has excellent flexibility, optical performance and environmental stability.

The invention relates to the technical field of semiconductor wafer processing, and particularly discloses an adhesive tape for semiconductor wafer thinning and a preparation process thereof. The adhesive tape for semiconductor wafer thinning comprises a base material layer and a bonding layer arranged on the surface of the base material layer, the base material layer is made of polyolefin, and the bonding layer is a modified acrylic acid adhesive layer; the modified acrylic acid adhesive layer is prepared from the following raw materials in parts by weight: 60 to 70 parts of 2-ethylhexyl acrylate, 15 to 25 parts of butyl acrylate, 5 to 10 parts of methyl methacrylate, 2 to 5 parts of hydroxyethyl acrylate, 0.5 to 2 parts of glycidyl methacrylate, 1 to 3 parts of a modifier, 0.8 to 1.2 parts of an isocyanate cross-linking agent, 0.3 to 0.8 part of an epoxy cross-linking agent and 0.3 to 0.8 part of azodiisobutyronitrile. According to the adhesive tape for semiconductor wafer thinning, the fixing and protecting effects on the wafer are improved.

The invention relates to the technical field of textiles, in particular to high-breathability antibacterial lining cloth and a preparation method thereof. The preparation method comprises the following steps: adding ethyl methacrylate, hydroxyethyl acrylate, modified chitosan, modified silver-loaded titanium dioxide, modified lignin and a lauryl sodium sulfate solution to obtain a pre-emulsion; and adding a lauryl sodium sulfate solution, a sodium bicarbonate solution and an ammonium persulfate solution into the pre-emulsion to obtain the acrylic acid adhesive. The high-breathability polyester fabric is soaked in the acrylic acid adhesive for 1-2 min, roll compacting and baking are conducted after soaking is completed, and the high-breathability antibacterial lining cloth is obtained. The high-breathability antibacterial lining cloth prepared by the preparation method has excellent antibacterial performance and ultraviolet resistance, so that the high-breathability antibacterial lining cloth has a wide application prospect in the technical field of textiles.

The invention relates to a method for manufacturing a wash-off label (2) comprising a face (1) and a pressure sensitive adhesive layer (4), wherein the face (1) comprises a thermoplastic film, and the method comprises applying an acrylic adhesive onto a first surface of the face (1), wherein the acrylic adhesive comprises a wash-off additive, the wash-off additive comprising are sinous material, and a grafted rosin ester which is a rosin ester grafted with a capped polyalkylene glycol, wherein the capped polyalkylene glycol is apolyalky lene glycol end-capped by an alkyl ether, and drying the acrylic adhesive in order to form an acrylic pressure sensitive adhesive onto the first surface of the face (1), thereby obtaining the wash-off label (2). The invention further relates to a wash-off label.

This invention relates to a method for manufacturing a direct thermal linerless label web (100) comprising a face (110) and a water-based acrylic pressure sensitive adhesive coating (120), wherein the face (110) comprises a base layer (113) and a direct thermal printable coating (115), and wherein the method comprises: supplying the face (110), applying a water-based acrylic adhesive coating (121) comprising free and / or non-free surfactant(s), wherein a total amount of the surfactant(s), excluding surface active polymerization agent(s), is from 0 wt. % to less than 0.6 wt. %, calculated from the total dry weight of the water-based acrylic adhesive coating, and thermally drying the water-based acrylic adhesive coating (121) into the water-based acrylic pressure sensitive adhesive coating (120). This invention further relates to a direct thermal linerless label web, and a use of a direct thermal linerless label (100) in on-demand printing.

The utility model relates to the technical field of photovoltaic packaging, and discloses a composite polyester backboard and a flexible photovoltaic assembly. The composite polyester backboard comprises a first base film and a second base film which are sequentially laminated from bottom to top, an outer weather-proof coating is arranged on the lower surface of the first base film, an inner bonding layer is arranged on the upper surface of the second base film, and the inner bonding layer is bonded on the lower surface of a photovoltaic cell; a composite adhesive layer is arranged between the first base film and the second base film; the first base film and the second base film are polyester base films, and the composite adhesive layer is an epoxy acrylic adhesive layer. The composite polyester backboard has the advantages of high strength, weather resistance, aging resistance, good cohesiveness with a packaging adhesive film, small thermal shrinkage and low production cost, avoids the problem of edge warping of the flexible photovoltaic module, reduces the power attenuation of the flexible photovoltaic module after a hail test, and is helpful for improving the packaging reliability and long-term power generation power of the flexible photovoltaic module.

This invention provides a high-strength, impact-resistant acrylic adhesive. Using an independent synthesis method, an acrylate-modified rubber elastomer with carboxyl groups is prepared. This elastomer can be chemically bonded to an acrylic polymer. The resulting hydroxyl groups can further react with an isocyanate curing agent. Adhesion is enhanced by using an acrylic phosphate adhesion promoter and a multifunctional acrylate monomer to increase crosslinking density, enabling the foam tape prepared with this acrylic adhesive to maintain high bonding strength even at high temperatures. The foam tape prepared with this high-strength, impact-resistant acrylic adhesive exhibits a 180° peel strength of greater than 3200 gf / in at room temperature and greater than 800 gf / in at 85°C. It also exhibits a drop impact energy of greater than 0.65 J and a DuPont impact energy of greater than 0.90 J.

The invention discloses a high-wear-resistance nano filler modified rubber material and a preparation method thereof, and belongs to the technical field of rubber material modification. The preparation method comprises the following steps: by taking water-soluble polyacrylic acid micelles as a template, controlling the hydrolysis rate of tetraethyl orthosilicate by regulating and controlling the dosage of ammonia water, so as to prepare hollow SiO2 nanoparticles with a porous shell layer and a stable structure; and then synergistic modification is carried out through a PEG-PLA block copolymer and a silane coupling agent KH550, so that the dispersity and compatibility of particles are improved. And blending and banburying the modified porous hollow SiO2 particles and butadiene styrene rubber slurry, and carrying out vulcanization molding to obtain the modified rubber material. The wear resistance and tensile strength of the rubber are improved, good elasticity and elongation at break are kept, high strength, high wear resistance and high toughness are considered, and the process is mild and controllable.

The invention relates to the technical field of semiconductor manufacturing, in particular to a high-yield and crack-free temporary bonding method for laser lift-off of a Mini / MicroLED COW whole-surface chip structure. According to the method, a composite membrane material composed of double-sided acrylic UV viscosity-reducing glue and a PET rigid base material is adopted. And high pressure is applied in a vacuum environment to complete bonding of the temporary substrate and the COW, so that large-area and high-density embedding of the acrylic acid adhesive layer and the surface structure of the chip is realized. And carrying out UV exposure to promote the phase change of the acrylic adhesive layer, and curing the acrylic adhesive layer from an initial soft viscoelastic state to a high-modulus hard acrylic support structure. The hard supporting surface and the vacuum embedded structure act together, so that excellent internal stress resistance is provided, and cracks in laser lift-off and subsequent processes are effectively prevented. Meanwhile, after the cured structure is subjected to subsequent permanent bonding, the visbreaking layer can be activated through simple UV irradiation, and residue-free and easy-to-separate de-bonding of the temporary substrate and the PET film material is realized.

The invention belongs to the field of protective films, and relates to an acrylic protective film for a metal grid touch sensor, the acrylic protective film comprises an acrylic acid adhesive layer, the acrylic acid adhesive layer comprises the following substances by weight: 100 parts of acrylic resin, 2-6 parts of a curing agent, 0.05-0.5 part of a catalyst, 2-6 parts of a retarder, 1-10 parts of a plasticizer, 0.1-0.5 part of a leveling agent, and 110-120 parts of a solvent. According to the technical scheme, the problems that after a protective film is attached to the metal grid sensor, adhesive residues are prone to occurring, and the dyne value of the surface is reduced are effectively solved, and the better subsequent ink printing effect is achieved.

The invention provides a PET enhanced PE foam composite material which comprises a PE foam base material layer, a bonding layer and a PET base material layer, the bonding layer is located between the PE foam base material layer and the PET base material layer, the PE foam base material layer is made of PE foam with the density being 0.05-0.3 g / cm < 3 > and the average cell diameter being 50-200 microns, the bonding layer is made of an acrylate adhesive with the thickness being 0.01-0.05 mm, and the PET base material layer is made of a PET adhesive with the thickness being 0.01-0.05 mm. The PET base material layer adopts a transparent PET film original film with the thickness of 0.01-0.1 mm, the prepared foam composite material has excellent mechanical properties, excellent structural stability and multifunctional integration, the adopted preparation method is simple in process, controllable in operation, clear in parameters of each step and suitable for large-scale industrial production, and by accurately controlling the process parameters, the foam composite material can be used for preparing a foam composite material with good mechanical properties. And the composite material with excellent performance can be stably produced.

To provide a reinforcing film which includes a base material layer and an adhesive layer, achieves both excellent low elasticity and excellent heat resistance, and hardly causes, for example, IC connection failure.SOLUTION: A reinforcing film according to an embodiment of the present invention is a reinforcing film including a base material layer and a pressure-sensitive adhesive layer, in which the pressure-sensitive adhesive layer is formed of an acrylic pressure-sensitive adhesive, the pressure-sensitive adhesive layer has surface elasticity at 25 °C of from 50kPa to 1000kPa, and an MD direction heat shrinkage rate when the reinforcing film is heated at 180 °C for 5 minutes is 1.0% or less.SELECTED DRAWING: Figure 1

The invention discloses an acrylic adhesive easy to peel after being heated. The acrylic adhesive is prepared from the following raw materials in percentage by weight: 20 to 30 percent of acrylic main monomer, 4 to 6 percent of diene, 0.1 to 0.5 percent of initiator, 51.5 to 67.9 percent of organic solvent and 8 to 12 percent of dienophile, the preparation method of the acrylic adhesive easy to peel off by heating comprises the following steps: (1) adding an acrylic main monomer, a diene body and a solvent into a reaction kettle to obtain a mixed monomer; (2) introducing nitrogen into a reaction kettle to exhaust air, then heating the mixed monomer prepared in the step (1) to 60 DEG C, adding an initiator into the reaction kettle, and simultaneously stirring at a constant speed of 200-300r / min by using a polytetrafluoroethylene stirring paddle to fully react for 4-6 hours to obtain an acrylate copolymer; (3) dissolving the acrylate copolymer prepared in the step (2) in a tetrahydrofuran solution, adding a dienophile, and reacting at 60 DEG C for 2-4 hours to form a covalent cross-linked network; and cooling to room temperature to obtain the polyacrylate adhesive which is easy to peel after being heated.

The invention relates to an HHOF-TGU307 enhanced acrylic acid adhesive as well as a preparation method and application thereof, and belongs to the technical field of macromolecular functional materials. Aiming at the problem that the existing acrylic acid adhesive is difficult to meet the high-performance requirement in the aspects of bonding strength and mechanical property, and particularly the defects of insufficient bonding strength, easy aging, interface failure and the like in the emerging application fields of new energy and the like, HOF-TGU307 (hydrogen bond organic framework) is introduced into an adhesive system; the cohesive force and the adhesion capacity with a base material are obviously improved. The HOF-TGU307 material is a novel crystalline organic porous material with high specific surface area, high crystallinity and adjustable aperture, the HOF-TGU307 material shows unique solution processability and easy regeneration due to reversibility and flexibility of hydrogen bonds, and the HOF-TGU307 material has good biocompatibility and low cytotoxicity due to the metal-free characteristic; the characteristics enable the HOF to become a new platform of functional materials. The adhesive is formed by polymerization of two acrylic monomers in an ethanol solution through ultraviolet initiation, the process is simple and environment-friendly, and the obtained product has good storage and transportation stability. Performance tests show that the bonding strength of the adhesive on a PMMA (polymethyl methacrylate) base material can reach 1.36 MPa, and Fourier infrared spectroscopy and scanning electron microscope analysis verify good compatibility and dispersion state between HOF-TGU307 crystals and a polymer matrix. The adhesive provided by the invention has wide application prospects in the fields of structural bonding, photoelectric materials, automobiles, new energy and the like.

A silicone-acrylic adhesive is made from a combination of I) a first aqueous emulsion containing a soft acrylic polymer, II) a second aqueous emulsion containing a hard acrylic polymer, and III) an aqueous emulsion of a silicone resin. The silicone-acrylic binders can be used to prepare thermal insulation coating compositions that can be applied to metal (e.g., steel) substrates or primed substrates. A thermal barrier coating prepared by drying the thermal barrier coating composition provides corrosion resistance under thermal barrier to a metal or primed substrate.

The invention discloses a high-strength wear-resistant acrylate adhesive and a preparation method thereof, and relates to the technical field of adhesives. The high-strength wear-resistant acrylate adhesive is prepared from the following raw materials in parts by weight: 50 to 60 parts of modified acrylate, 20 to 30 parts of modified elastomer, 5 to 10 parts of plasticizer, 5 to 10 parts of filler, 2 to 6 parts of cross-linking agent, 3 to 5 parts of initiator and 2 to 4 parts of accelerant. By modifying the raw materials of the acrylate adhesive, the prepared adhesive has high strength, wear resistance, low contractibility and self-repairing function, the service life and reliability of the adhesive can be improved, in addition, the adhesive is degradable, the degradable adhesive can be gradually decomposed in the natural environment after being used, the output of garbage is reduced, and the environment pollution is reduced. Moreover, soil and water cannot be polluted, and the ecological environment can be protected.

The utility model discloses a quick coating device for acrylic foam tape, which relates to the technical field of acrylic foam tape processing and comprises a worktable, a storage box is fixedly connected to the top of the worktable, an anti-solidification slicking mechanism is arranged on one side of the storage box, and the anti-solidification slicking mechanism comprises a first motor support. And one side of the storage box is fixedly connected with a first motor bracket. Through the arrangement of the anti-solidification slicking mechanism, the effects of preventing an acrylic adhesive from solidifying and conveniently slicking the acrylic adhesive on a base material can be achieved, and in the using process, the situation that the acrylic adhesive cannot be prevented from being solidified, so that the acrylic adhesive cannot be solidified after being coated for a long time can be avoided. And the acrylic adhesive is solidified in the storage box, so that the device cannot continue to carry out normal coating work, the coating work is interrupted, and a worker needs to spend extra time to melt the acrylic adhesive, and the working efficiency of the device is ensured.

The present application provides a two-component type acrylic adhesive for vulcanized rubber with excellent adhesion. The two-component type acrylic adhesive for vulcanized rubber of the present application is composed of an A agent and a B agent, wherein the A agent contains a (meth)acrylate represented by the following formula (1) and a radical generator, and the B agent contains a (meth)acrylate represented by the following formula (1), a reducing agent, and a polyurethane. CH2=C(R 11 )‑CO‑O‑R 12 (1) In formula (1), R 11 represents a hydrogen atom or a methyl group, and R 12 represents an alkyl group having 4 to 17 carbon atoms.

This invention discloses a coated modified zinc powder and its preparation method, belonging to the field of metal powder surface modification technology. The coated modified zinc powder uses zinc powder as its core, with a water-soluble polyacrylic acid (PAA) micelle layer formed by aqueous dissolution and ethanol-induced precipitation. This micelle layer is insoluble in ethanol but soluble in water. The preparation method includes zinc powder pretreatment, PAA aqueous dissolution, micelle coating, and post-treatment steps. The key step is to inhibit micelle agglomeration by intermittently replenishing deionized water, achieving uniform coating. This invention solves the contradictions of existing zinc powder oxidation, agglomeration, and storage and use. The modified zinc powder exhibits significantly improved storage stability, rapid removal of the micelle layer in the aqueous phase during use to restore its intrinsic activity, and excellent dispersion performance. The process is simple and easily scalable, making it suitable for anti-corrosion coatings, chemical catalysis, and other fields.

The invention relates to a high-temperature-resistant acrylic acid protective film for a Micro LED screen manufacturing process and a preparation method of the high-temperature-resistant acrylic acid protective film, and belongs to the technical field of protective films. The high-temperature-resistant acrylic acid protective film comprises a base material layer, a release layer arranged on the base material layer and a modified acrylic acid adhesive layer arranged between the base material layer and the release layer, the modified acrylic acid adhesive layer comprises the following components in parts by mass; 100 parts of acrylic resin, 5-15 parts of long-chain alkyl silicone oil, 0.5-2 parts of an epoxy curing agent and 0.1-0.5 part of an antistatic agent; on one hand, the long-chain alkyl silicone oil has excellent temperature resistance, the chain segment is soft, the infiltration capacity on the interface of a pasted object can be enhanced, and bubbles are effectively prevented from being generated between the protective film and the pasted object in a high-temperature environment; the problem of viscosity climbing under a high-temperature condition can be greatly inhibited, and a stable and reliable protection effect is provided for a Micro LED screen manufacturing process.

The invention relates to a thermosetting type heavy industry adhesive-residue-free aluminum-plastic composite pressure-sensitive adhesive tape and a preparation method thereof.The thermosetting type heavy industry adhesive-residue-free aluminum-plastic composite pressure-sensitive adhesive tape comprises a pressure-sensitive adhesive layer and a base material layer, and the pressure-sensitive adhesive layer is prepared from, by weight, 80-100 parts of acrylic adhesive, 6-15 parts of tackifying resin, 1-10 parts of methyl methacrylate, 1-2 parts of coupling agent, 1-2 parts of curing agent, 20-30 parts of ethyl acetate and 20-30 parts of methylbenzene. The tackifying resin is introduced, the polarity of the adhesive layer is enhanced, the adhesive force is improved, meanwhile, the methyl methacrylate is introduced, the glass-transition temperature (Tg) is reduced, the flexibility and flowability of the adhesive layer are improved, and no adhesive residue exists in the heavy industry.

The invention belongs to the technical field of adhesives, and particularly relates to an electrolytic adhesive tape and a preparation method thereof. The electrolytic adhesive tape comprises a first release film layer, a viscosity reducing adhesive layer, an aluminum foil base material layer, an insulating layer, an acrylic acid adhesive layer and a second release film layer from top to bottom. The insulating layer can prevent current short circuit and guarantee stripping directionality; an ionic conductor polymer is introduced into the viscosity reducing adhesive layer, so that the adhesive tape can be electrified to realize the viscosity reducing effect, and the ionic conductor polymer is prepared by polymerizing methacryloylethyl sulfobetaine, oxirane-2-yl methyl 4-vinyl benzoate, 1-benzyl-3-vinyl imidazole and organic conductive particles; the 1-[3-(triethoxysilyl) propyl]-3-methylimidazolium chloride is grafted, so that the leakage of the ionic liquid component is reduced, and the electrifying visbreaking time of the electrolytic adhesive tape is shortened, thereby achieving the technical effects of quick debonding and no residue.

The invention discloses a high-refractive-index high-temperature-resistant epoxy acrylic photo-thermal curing composition, and relates to the technical field of adhesives. The coating comprises an epoxy-acrylic acid derivative, an inorganic nanoparticle dispersion liquid, a photoinitiator, a thermal initiator and an additive. According to the system, an inorganic nanoparticle dispersion liquid and an epoxy-acrylic acid derivative are uniformly mixed, and the epoxy-acrylic acid photo-thermal curing glue with high refractive index and high temperature resistance is prepared by optimizing the proportion of each component and regulating and controlling the component and proportion of the epoxy-acrylic acid derivative. The high-refractive-index glass adhesive has the advantages of high refractive index, low viscosity and favorable bonding strength for glass bonding; the problems that the pure light curing process of the existing high-refractive-index optical element and optical electronic element is not complete, the dark area is not cured and the like can be solved; the cured high-refractive-index epoxy acrylic adhesive layer is free of obvious cracking and embrittlement after being baked at the high temperature of 220 DEG C for two hours, and has excellent temperature resistance.

The utility model discloses a protective film for uncovering, which belongs to the technical field of protective films and comprises a release layer, a PI (polyimide) substrate layer, a thermosetting adhesive layer, a PET (polyethylene terephthalate) composite film layer and a release layer which are sequentially stacked from top to bottom. Compared with the prior art, the utility model has the following beneficial effects: a five-layer structure is adopted, PI is used as a base material, the outer layer of the base material is coated with the release layer, the middle layer is the thermosetting adhesive layer, and the lower surface is the PET composite film layer of which the outer layer is coated with the release layer, so that the uncovering position is flexible and changeable, the uncovering can be opened at any position of the PI surface or the PET surface, and the product selection of a user is facilitated; necessary conditions are provided for PCB / FPC automatic lamination production; in addition, the thermosetting adhesive layer is used for replacing the original acrylic adhesive layer, so that the product quality is more stable, the production modes are diversified, and the capacity of adapting to various external environments is stronger.

The present invention relates to an acrylic adhesive composition, and a polarizing plate and a display device manufactured using the same, wherein the acrylic adhesive composition includes an acrylic copolymer formed by polymerizing a monomer mixture including a (meth)acrylic monomer and a (meth)acrylic monomer containing a hydroxy group, an isocyanate-based multi-functional curing agent, a curing retarder including a first curing retarder having a deblocking temperature of 110° C. or lower and a second curing retarder having a deblocking temperature of 130° C. or higher, and a silane coupling agent.

This invention relates to a modified fatty amine curing agent soluble in acrylic adhesives and its preparation method. The preparation method is as follows: polyetheramine and bismaleimide are added to a flask, a first mixed solvent is added to dissolve them, and the mixture is stirred in a water bath at a certain temperature for a period of time. Then, dodecylamine is added, and the mixture is stirred and reacted again at the above temperature for another period of time. Then, a second mixed solvent is added to achieve a certain solid content, and the mixture is stirred evenly to obtain the modified fatty amine curing agent. The mixture is then bottled, sealed, and refrigerated. The modified fatty amine curing agent soluble in acrylic adhesives of this invention has good high-temperature resistance, low polarity, and flexibility, and also exhibits good compatibility with acrylic adhesives.

The application relates to a synthesis method and application of a heat-adhesive polyimide and polyimide film, and steps are as follows: a plurality of portions of diamine monomers and a plurality of portions of dianhydride monomers are prepared into a polyimide acid solution, then a glue film is prepared, and a heat-adhesive polyimide film is obtained after complete imidization at high temperature. The application proposes a novel heat-adhesive polyimide film containing N and S atom coordination elements, which has a low thermal expansion coefficient, high heat adhesion, high heat resistance and high tensile strength, and can be applied to the production of glue-free double-sided flexible copper-clad plates (2L-FCCL) by a laminating method. Compared with existing commercial polyimide films, the heat-adhesive polyimide film in the application can be strongly attached to copper foil in a heat processing process without an additional epoxy resin or acrylic adhesive, and thus is suitable for the rapid production of 2L-FCCL by a hot pressing method, the peel strength of the heat-adhesive polyimide film reaches above 0.6 N / mm, and the highest peel strength reaches 1.2 N / mm, and the heat-adhesive polyimide film has a good application prospect in the field of glue-free flexible copper-clad plates.

The utility model discloses a hot bending tempered glass film which comprises a hot bending glass substrate, a sandwich adhesive layer and an epoxy resin adhesive edge sealing layer. The edge of the hot bending glass substrate is finely polished, so that the edge is smooth and is not easy to warp. The sandwich glue layer is arranged on the lower surface of the hot bending glass base material, is used for bonding the hot bending glass base material and a mobile phone screen, and comprises a high-transmittance silica gel coating layer, a first base material layer, a silica gel filling layer, a second base material layer and an OCA acrylic glue coating layer which are sequentially arranged from top to bottom. And the epoxy resin adhesive edge sealing layer is used for sealing the edge of the sandwich adhesive layer to prevent dust and impurities from entering. According to the utility model, through the multi-layer sandwich glue layer design of the high-transmittance silica gel coating layer, the silica gel filling layer and the OCA acrylic glue coating layer and the epoxy resin glue edge sealing process, rapid exhaust, strong bonding effect and automatic filling of screen radian tolerance can be realized, bubbles and white edges are effectively reduced, the bonding effect is improved, and the product quality is improved. And the requirements of users on aesthetic property and practicability are met.