TWI844922B - An adhesive laminating method for the shoe making - Google Patents

Abstract

An adhesive laminating method for the shoe making, which includes the following continuous operations: heating an electromagnetic polarized solid adhesive to melt it into glue; using a glue spraying device spray a thin layer of the melted adhesive glue to the surface of the shoe outsole; put a vamp (the bottom already includes the shoe midsole) onto the shoe outsole; fix the shoe upper and the shoe outsole with a jig fixture; put the shoe upper and shoe outsole together with the jig into an electromagnetic polarization device; and the effect of polarization is to eliminate the crystallization caused by the hydrogen bonds in the adhesive polymer, thereby forming a tight and firm bond between the vamp and the shoe outsole; when the shoe is taken out, the unreacted isocyanide at both ends of the adhesive molecular structure formula, the acid functional group then reacts with the water molecules in the air, returns to the original crystalline molecular formula, and forms hydrogen bond cross-linking with the molecules of the outsole and midsole to achieve a tight and firm combination between the sole and the upper.

Description

Shoemaking adhesive bonding method

The present invention relates to an adhesive bonding method, particularly to an adhesive bonding method for shoe materials in the shoemaking industry, which can make the adhesive bonding of shoe materials faster, more accurate, and more beautiful, and can achieve multiple effects such as saving manpower, energy, and space.

Shoes are items used by humans to protect their feet. As shown in Figure 1A, shoes mainly include two parts: an upper 101 and a sole 102. In practice, as shown in Figure 1B, the sole 102 exposed to the outside is also called a shoe outsole. A midsole 103 is provided between the bottom of the upper 101 and the sole 102. The upper 101 is mainly adhered to the upper surface of the sole 102 by the midsole 103 to form a whole shoe. The upper 101 is mainly provided for people to wear their feet and is used to cover the feet. It can be made of cloth, leather or synthetic plastic materials. The sole 102 is mainly made of rubber materials or other wear-resistant composite materials to improve the safety, functionality and durability of the shoes.

In ancient times, shoes were mostly woven from grass and rattan, and only more sophisticated shoes would use needles and thread to sew the upper and sole. Since the materials for making shoes were quite limited, the styles of shoes have not changed much. It was not until the progress of human culture and industry that a variety of shoe materials came into being. After the chemical industry developed adhesives, shoes could be mass-produced or made using automated methods. So far, the styles and production of shoes have developed to a level that was unimaginable in the old days.

It is known that in the early days of shoe manufacturing, manual gluing was mostly used (as shown in Figure 1C). However, manual gluing is labor-intensive and can easily cause glue to overflow, resulting in shoe defects. Later, with the development of industry, mechanical equipment was used to rub, spray, apply or brush glue. For example, the patent case "Glue feeding mechanism of shoemaking machine" approved by this country, Announcement No. 456191 (Application No. 89219506), as shown in Figure 1D (note, the figure is the announcement of Figure 5 of Announcement No. 456191, which is for reference only, so its figure number is not included in the description of the figure number of this case, please note in advance), discloses a glue feeding mechanism of a shoemaking machine, which consists of a box, The drive motor is arranged outside the housing, and drives the first roller gear set inside the housing through the transmission shaft. The first roller gear set is provided with two oppositely arranged bevel gear sets forming a V shape and a driving gear. The driving gear is connected to the passive gear of the second roller gear set and drives. The second gear set is arranged on a gear. The center of the lower leg of the seat is adjusted by the spring force of the spring-type positioning column installed on the upper end of the gear seat to adjust the V-shaped gap formed by the bevel gears of the two gear sets, and the rubber strip passes through the two corresponding V grooves, so that the rubber strip can be tightened and smoothly output and can adapt to the delivery of rubber strips of different diameters; and in order to achieve the convenience of replacing the rubber strip, an eccentric The eccentric shaft is connected to an adjusting wrench at the other end. When the adjusting wrench is turned, the eccentric shaft contacts the gear seat and the top pin of the positioning column overcomes the spring force and is lifted up, so that the gears of the first roller gear set and the second roller gear set are disengaged, and the distance of the V groove is increased. In this way, the rubber strip can be replaced easily and quickly; and the installation of the micro switch can timely detect whether the rubber strip is in a conveyable state.

The patent case of the approved patent of this country, Announcement No. 459563 (Application No. 89219113), "Shoemaking Gluing Device", as shown in Figure 1E (note, the figure is the announcement version of Figure 5 of Announcement No. 459563, which is for reference only, so its figure number is not included in the description of the figure number of this case, just to make it clear in advance), discloses a shoemaking glue-polishing device; it includes: a pair of glue tanks for containing glue, including a main glue tank and a spare glue tank; a tank sealing cover, the edge of which is provided with a compressed air injection hole and a connection interface for a glue indicator tube, the sealing cover is used to seal the glue Volatile odor and prevent leakage of compressed air; a glue indicator tube connected to the above-mentioned cover to indicate the amount of glue in the tank; an air filter to filter the compressed air introduced; an air valve to control the air intake and pressure of the compressed air; a glue outlet, which is externally connected to several glue control valves to control the flow of glue; the tail end of the glue control valve is connected to the glue outlet pipe to discharge the glue; the shoemaking glue polishing device of this invention, through the above-mentioned components and functions, achieves the purpose of suppressing the volatile gas and odor emitted by the glue during the shoemaking process, and taking into account the cleanliness and hygiene of the environment.

The patent case of the approved patent of this country, Announcement No. 463583 (Application No. 89220811), "Upper Glue Structure for Shoemaking Machine", as shown in Figure 1F (Note: the figure is the announcement version of Figure 2 of Announcement No. 463583, which is for reference only, so the figure number is not included in the description of the figure number of this case, just to make it clear in advance), discloses an upper glue structure for a shoemaking machine, which mainly includes: a base, on which a double-gun type glue wiping rod is mounted on the cantilever; a double-gun type glue wiping rod, the rod is a series of multiple components, arranged in parallel on the left and right, and the lifting rod is appropriately connected in series on the sleeve rod, and the rod is The front end is equipped with an automatic glue feeding mechanism, the middle section of the sleeve rod is interlocked with the base, and the rear section of the sleeve rod is interconnected with a movable rod; and a three-dimensional control mechanism, which is composed of an up-and-down telescopic mechanism, a straight telescopic mechanism, and a lateral telescopic mechanism. The up-and-down telescopic mechanism is used to push the aforementioned lifting rod, the straight telescopic mechanism is used to push the vicinity of the aforementioned movable rod, and the lateral telescopic mechanism is cross-placed to allow the sleeve rod to open and close like scissors; thereby, the forward and backward, left and right, and up-and-down movement, opening and closing, and lifting and lowering travel distance of the rubber wiping rod can be accurately controlled by a computer, so as to be applicable to a practical structure for the consistent production of fast rubber wiping for various types of shoes

However, from the above-mentioned gluing or wiping mechanism, it can be seen that the gluing mechanism is very complicated and requires considerable cost for research and development. Moreover, the glue used needs to be baked in multiple ovens to have stable adhesion, which not only increases the process time, but also affects the production efficiency.

As for the common shoe manufacturing production line today, as shown in Figure 2, it includes preparation and pre-operation 251, gluing operation 252, bonding operation 253 and repair operation 254. The preparation and pre-operation 251 includes drawing lines 201 (drawing the predetermined gluing range on the upper surface of the sole), polishing 202 (removing the mold release agent attached to the sole surface through cleaning or polishing), quality control 203, treatment agent 204 (applying a surface modifier on the sole surface to produce a chemical reaction with better adhesion) and oven 205 (baking in the oven at a temperature not exceeding 150°C). Gluing operation 252 includes primary glue 206 (applying the first glue on the surface of the sole); oven 207 (the sole is then sent into the oven to bake at a temperature not exceeding 150°C); secondary glue 208 (applying the second glue on the surface of the sole); oven 209 (the sole is then sent into the oven to bake at a temperature not exceeding 150°C). Laminating operation 253 includes sole laminating 210 (laminating the upper and the sole), pressing sole 211 (pressing the bonded upper and sole), oven 212 (the whole shoe is then sent into the oven to bake at a temperature not exceeding 150°C). The final repair operation 254 includes glue filling 213, freezer 214 (sending the whole shoe into the freezer for final shaping); packaging 215.

However, the above-mentioned process of bonding the sole and the upper requires not only a large number of operators (each step requires at least two or three operators), but also three ovens and freezers that consume a lot of energy; moreover, the entire production line, from the first line drawing to the final freezer process, has a total process length of about 32 meters, so a large factory space is required.

In view of this, the inventor has studied ways to improve the above-mentioned deficiencies based on his experience and accumulated technology in manufacturing various types of footwear. After continuous research, experimental improvements, he finally developed and designed the shoemaking adhesive bonding method of the present invention, hoping to eliminate the deficiencies and shortcomings caused by the conventional method.

Therefore, the present invention aims to provide a shoe-making adhesive bonding method that shortens the bonding process of shoe materials (such as soles and uppers) and enables fast and stable bonding.

According to the shoemaking adhesive bonding method of the present invention, an electromagnetically polarized solid adhesive is used as an adhesive material, and the electromagnetically polarized solid adhesive is enabled to quickly exert a stable adhesive effect through electromagnetic polarization equipment, which is the second purpose of the present invention.

According to the shoe-making adhesive bonding method of the present invention, by using electromagnetic polarization solid adhesive and electromagnetic polarization equipment, the adhesive bonding operation can be completed in one time, which can not only greatly simplify the overall shoe-making process and reduce the space required for the factory, but also achieve better adhesive effects and make the manufactured shoes more beautiful and complete. This is another purpose of the present invention.

According to the shoemaking bonding method of the present invention, when bonding the upper and the sole, an electromagnetic polarization solid adhesive is heated to 40-80°C to melt it, and then the melted adhesive is sprayed onto the surface of the sole using a spraying device; after the adhesive cools and solidifies, the residual glue generated during the spraying is removed; then the upper is placed on the sole, and after it is pressurized and fixed with a jig, it is placed together with the jig into an electromagnetic polarization device, and after being heated in the electromagnetic polarization device for 10-100 seconds, the upper and the sole are tightly bonded, which is another purpose of the present invention.

In order to help the review committee members to have a deeper understanding of the purpose, shape, structural device features and functions of the present invention, the following embodiments are given with diagrams to explain the method of the present invention in detail as follows:

101: Upper

102: Sole

103:Midsole

201: Draw a line

202: Polishing

203: Quality Control

204: Treatment agent

205: Oven

206: Once lost

207: Oven

208: Second paste

209: Oven

210:Bottom

211: Bottom pressure

212: Oven

213: Glue

214: Freezer

215:Packaging

251: Preparation and preparatory work

252: Gluing operation

253: Laminating operation

254: Remedial work

301: Draw a line

302: Polishing

303: Quality Control

304: Oven

331: Preparation

332: Preliminary work

333: Adhesion and lamination operation

334: Remedial work

410: Heating solid adhesive step

420: Melting and fixing adhesive step

430: Steps for spraying using glue spraying equipment

440: Fitting steps

450: Electromagnetic polarization step

460: Decoration and packaging steps

51: Electromagnetic polarized solid adhesive

52: Liquid adhesive

521: Liquid adhesive layer

522:Colloid adhesive

523: Hydrogen bonded crystal gel

53: Glue spraying equipment

54: Sole

55: Mould

56: Shoe last

57: Upper

58:Electromagnetic polarization equipment

58a, 58b, 58c: electromagnetic waves

581: Pressure block

582: Clamp

59: Shoes

61: midsole

62: Shoe outsole

Figure 1A is a three-dimensional diagram of the shoes.

Figure 1B is a schematic cross-sectional view of the shoe.

Figure 1C is a diagram showing the common practice of artificial gluing of shoes.

Figure 1D is the announcement diagram of Figure 5 of Patent Case No. 456191 published in this country.

Figure 1E is the announcement diagram of Figure 5 of Patent Case No. 459563 published in this country.

Figure 1F is the announcement diagram of Figure 2 of Patent Case No. 463583 published in this country.

Figure 2 is a schematic diagram of the production process of Xijian shoes.

Figure 3 is a schematic diagram of the general process of the shoemaking adhesive bonding method of the present invention.

Figure 4A is a diagram showing the first process of the shoemaking adhesive bonding method of the present invention.

Figure 4B is a diagram showing the second process of the shoemaking adhesive bonding method of the present invention.

Figure 4C is a diagram showing the third process of the shoemaking adhesive bonding method of the present invention.

Figure 5A is a schematic diagram of the early cross-section of the adhesive in the shoemaking adhesive bonding method of the present invention.

Figure 5B is a schematic diagram of the mid-term cross-section of the adhesive in the shoemaking adhesive bonding method of the present invention.

Figure 5C is a schematic cross-sectional view of the adhesive in the later stage of the shoemaking adhesive bonding method of the present invention.

Before explaining with reference to the drawings, it should be pointed out that the present invention is not limited to the two shoe materials of the upper and the sole. The upper and the sole are used as embodiments because the adhesion and bonding between the two are the most extensive and easy to understand. The " sole " mentioned in this description is what is generally called the outsole, and the " upper " includes (or does not include) the midsole arranged at the bottom thereof. With current shoes, the upper of the shoe material includes the midsole.

The process of the shoe-making adhesive bonding method of the present invention is as shown in Figure 3, including preparation 331, pre-process 332, adhesive bonding 333 and repair 334. The preparation 331 is the same as the known method in that it includes: drawing lines 301 (drawing the predetermined gluing range on the upper surface of the sole), polishing 302 (cleaning or polishing to remove the mold release agent attached to the sole surface) and quality control 303. The pre-process 332 is different from the known method in that it does not include the step of applying a surface modifier on the sole surface with a treatment agent to produce a chemical reaction on the surface of the sole to achieve better adhesion; and the present invention does not use a high-temperature oven, but only uses a low-temperature oven 304 to heat the sole at 40-80°C.

The shoemaking adhesive bonding method of the present invention uses "an electromagnetically polarized solid adhesive" developed by the applicant as the adhesive for the upper and the sole to bond two different shoe materials. The electromagnetically polarized solid adhesive has been separately applied to your office for invention patent No. 111128563. The electromagnetically polarized solid adhesive is an electromagnetically activated moisture-reactive solid adhesive, which is prepared by mixing one or more formulas of prepolymer 10-95%, tackifier 1-30%, auxiliary 0.01-10%, and filler 1-30%, and heating to 100°C-150°C, and drying and dehydrating for 30 minutes-4 hours in a vacuum environment of 650-760 mmHg to obtain a prepolymerized liquid; then cooling the obtained prepolymerized liquid to below 70°C, adding an electromagnetically polarized active agent (EMPA, Electro-magnetic polarization active agent) and heating the mixture to 100°C-150°C, and then drying and dehydrating the mixture for 30 minutes-4 hours in a vacuum environment of 650-760 mmHg. Activator), mix evenly under nitrogen atmosphere, slowly add diisocyanate curing agent (Diisocyanate) under nitrogen atmosphere, raise the temperature to 80-150℃, make the prepolymer mixture undergo polymer polymerization for 1.5-4 hours, and control its terminal isocyanic acid content to be 0.1-25%; add catalyst under the nitrogen atmosphere to accelerate the polymerization reaction; in a vacuum environment of 650-760 mmHg, remove nitrogen in the reaction chamber to remove bubbles from the polymerization reaction product to obtain.

Please refer to Figures 4A, 4B, and 4C, which are process diagrams of the adhesive bonding operation 333 and the repair operation 334 of the shoemaking adhesive bonding method of the present invention, which include:

(i) Heating solid adhesive step 410: heating the electromagnetically polarized solid adhesive 51 in the form of crystalline powder, block, sheet or strip at a temperature of 40-80°C;

(ii) Melting and fixing adhesive step 420: The electromagnetically polarized solid adhesive is heated to become a melted liquid adhesive 52, which is then sprayed using a glue spraying device 53;

(III) Using a spraying device for spraying step 430: placing the sole 54 on the mold 55 in advance, and then using the spraying device 53 to spray the melted liquid adhesive 52 onto the upper surface of the sole 54 through the spray nozzle 531, so that a thin layer of liquid adhesive 521 is formed on the upper surface of the sole 54;

(IV) Fitting step 440, taking out the sole 54 with the adhesive layer 521 sprayed on the upper surface from the mold 55, removing the residual glue attached to the edge of the sole 54, and fitting the sole 54 to the upper 57 on the shoe last 56, so that the sole 54 and the upper 57 are initially bonded through the melted but weak liquid adhesive layer 521;

(V) Electromagnetic polarization step 450: Place the sole 54 and the upper 57 in an electromagnetic polarization device 58, and position the sole 54 and the upper 57 together with the shoe last 56 using a pressing block 581 and a fixture 582, and then use the electromagnetic waves 58a, 58b, and 58c of the electromagnetic polarization device 58 to push the carrier covered with static electricity in the liquid adhesive layer 521, destroy the hydrogen bonds of the hydroxyl groups in the adhesive structure, and the adhesive crystallizes and is eliminated, so that the liquid adhesive layer 521 on the sole instantly becomes a colloid, reaching the point where the adhesive force is the strongest, and the upper 57 and the sole 54 are combined to form a shoe;

(VI) Decoration and packaging step 460: The shoe 59 after the upper 57 and the sole 54 are combined is taken out and subjected to decoration and packaging. The unreacted isocyanate functional groups at both ends of the adhesive molecular structure react with water molecules in the air to return to the original crystalline molecular formula and form hydrogen bond cross-linking with the molecules of the sole 54 and the midsole, thereby achieving a tight and firm combination of the sole and the upper.

Please refer to Figures 5A, 5B, and 5C, which are schematic cross-sectional views of the liquid adhesive layer 521 at the front, middle, and end stages of the shoemaking adhesive bonding method of the present invention. FIG. 5A shows a state where a liquid adhesive is sprayed onto the upper surface of the sole by a spraying device, and the liquid adhesive is a thin liquid adhesive layer 521. The liquid adhesive layer 521 is clearly separated from the upper surface of the midsole 61 and the lower surface of the outsole 62. FIG. 5B shows that the sole and the upper are placed in an electromagnetic polarization device, and after being magnetized by electromagnetic waves, the carrier covered with static electricity in the liquid adhesive layer 521 is pushed, destroying the hydrogen bonds of the hydroxyl groups in the adhesive structure, and the adhesive crystallizes and is eliminated, and the liquid adhesive layer 521 instantly becomes a glue adhesive 52. 2, the colloidal adhesive 522 penetrates into the bottom layer of the midsole 61 and the inner layer of the outsole 62; Figure 5C shows that the shoe is taken out after the upper and the outsole are combined, and after being modified and packaged, the unreacted isocyanate functional groups at both ends of the molecular structure of the colloidal adhesive 522 react with water molecules in the air to return to the original crystallization molecular formula, and form hydrogen bond cross-linking with the molecules of the outsole and midsole to form a hydrogen bond crystallization gel 523 with a molecular structure and cyanide bonds, thereby forming a tighter bond with the midsole 61 and the outsole 62.

The composition of the electromagnetically polarized solid adhesive used in the present invention is described below:

The electromagnetically polarized solid adhesive used in the present invention comprises a prepolymer, a diisocyanate curing agent, a tackifier, an auxiliary, a filler, an electromagnetically polarized active agent carrier, a resistance adjuster, a catalyst and a coupling agent. Among them:

Prepolymer: Polyester polyol, polyether polyol, polytetrahydrofuran prepolymer (Polytetrmethylene ether glycol polyol), polycaprolactone prepolymer (Polycarbonate polyol), polyhydroxyl-terminated acrylate prepolymer (Polyhydroxyl-terminated polybutadiene) or polyhydroxyl-terminated epoxy prepolymer (Polyhydroxyl-terminated epoxy). These prepolymers have a common feature, that is, their terminal groups are hydroxyl groups (Hydroxy bond-OH). The prepolymers can be mixed to adjust the physical properties of the solid adhesive.

Disocyanate curing agent: diphenylmethane diisocyanate, toluene diisocyanate, 1,5-naphthalene diisocyanate, isophorone diisocyanate or hydrogenated diphenylmethane diisocyanate (4,4'-dicyclohexylmthane diisocyanate), etc.

Tackifier: Abietic resin, terpene resin, hydrocarbon resin (HCR): C5, _C6 , _C9 and other by-products of petroleum production. It is a thermoplastic resin produced through pre-treatment, polymerization, distillation and other processes. It is also divided into many types according to different raw materials. There is no single structural formula. The better ones are _C5 petroleum resin (C5 Petroleum resin), C6 petroleum resin (C6 Petroleum resin) or C9 petroleum resin (C9 Petroleum resin).

Auxiliary: Based on monomers, polymers, oligomers and surfactants, it has the effects of defoaming, preventing sedimentation, increasing viscosity, improving product appearance, improving anti-sagging, coloring, reducing viscosity, enhancing gloss, certainty and balance (the structure of auxiliary agents is confidential to each manufacturer and no structural formula can be found). For example, it can be: antifoaming agent, leveling agent, anticratering agent, dilatant thickener or thixotropy.

Filler: Also called filler or extender, it can be talcum powder, calcium carbonate or kaolin, etc.

Electromagnetically polarized active agent carrier: powdered or granular compounds such as quartz, zirconia, silicon carbide, zinc oxide, calcium oxide, magnesium oxide, copper oxide, calcium carbonate, mica, iron oxide, alumina, carbon, graphite and its isomers, solid polymer microspheres or hollow polymer microspheres.

Resistance adjuster: It is a conductive compound or polymer used to adjust the micro-resistance on the surface of the carrier, including poly(3,4-ethylenedioxythiophene), silver nanowire, carbon nanotube, graphene, octylphenol polyoxyethylene ether [Tetramethylbutyl)phenoxy]ethoxy)ethanol] or monoalkyl ether phosphate.

Catalyst: used to accelerate the polymerization reaction, including: dibutyltin dilaurate or N,N-dimethyltrimethylenediamine.

Coupling agent: It is an additive used to improve the interface performance between synthetic resin and inorganic filler or reinforcing material in plastic compounding. It is also called surface modifier. It can reduce the viscosity of synthetic resin melt and improve the dispersion of filler to improve processing performance during plastic processing, so that the product can obtain good surface quality and mechanical, thermal and electrical properties. Coupling agent is generally composed of two parts, one part is inorganic affinity group, which can react with inorganic filler or reinforcing material, and the other part is organic affinity group, which can react with synthetic resin. Contains: Dibutyltin dilaurate, Vinyltriethoxy silane, 3-isocyanatopropyl (trimethoxy)silane, (3-Aminopropyl)triethoxysilane or (3-Aminopropyl)trimethoxysilane.

The electromagnetically polarized solid adhesive used in the present invention, through the above composition, can achieve rapid concentration and dispersion of the charged structure of the electromagnetically polarized active agent by rapidly changing the positive electric field and the negative electric field, thereby breaking the hydrogen bond crystal structure of the moisture-reactive solid adhesive to liquefy it and achieve adhesion.

Therefore, the shoemaking adhesive bonding method of the present invention uses an electromagnetic polarization solid adhesive, which, together with the electromagnetic polarization equipment, can not only enhance the bonding effect between the upper and the sole, but also has three major characteristics in terms of production equipment, including labor saving (manpower can be saved by 60%), energy saving (saving energy loss of ovens, exhaust and freezers, saving 85% of 187KW energy consumption per hour) and space saving (the overall operation length can be shortened by 32%). Furthermore, because the electromagnetic polarized solid adhesive used is zero volatile organic compound (VOC), there is no need to use a treatment agent to coat the surface of the sole with a surface modifier to produce a chemical reaction with better adhesion. This is not only conducive to improving the working environment, but also provides employees with a safe and healthy environment, which can achieve sustainable development for both labor and management.

In summary, the shoe-making adhesive bonding method of the present invention does have an unprecedented innovative structure that has not been seen in any publications, and there are no products made by similar methods on the market. Therefore, there is no doubt that it is novel. In addition, the unique features and functions of the present invention are far beyond the comparison of conventional use, so it is indeed more advanced than conventional use, and meets the requirements of the application requirements of invention patents under the Patent Law of the Republic of my country, and a patent application is filed in accordance with the law.

It should be noted that the above is a preferred specific embodiment of the present invention. If the changes made according to the concept of the present invention still do not exceed the spirit covered by the instructions and diagrams, they should be stated within the scope of the present invention.

301: Draw a line

302: Polishing

303: Quality Control

304: Treatment agent

331: Preparation

332: Preliminary work

333: Adhesion and lamination operation

334: Remedial work

Claims (3)

A shoemaking adhesive bonding method includes one of the following continuous operations in the adhesive bonding process of two uppers and soles: coating the surface of the sole with melted liquid electromagnetic polarization solid adhesive; then placing the upper on the sole; and then placing the sole, upper and fixture together in an electromagnetic polarization device for heating. The electromagnetic waves generated by the electromagnetic polarization device quickly change the positive and negative electric fields and attract the charged particles on the electromagnetic polarization active agent to migrate at high speed, thereby eliminating adhesion. The crystallization caused by the hydrogen bonds in the polymer of the adhesive forms an adhesive effect that bonds the upper and the sole. When the shoe body is removed, the unreacted isocyanate functional groups at both ends of the adhesive molecular structure react with the water molecules in the air to return to the original crystal molecular formula, and form hydrogen bond cross-linking with the molecules of the outsole and midsole to achieve a tight and firm bond between the sole and the upper. The temperature at which the electromagnetically polarized solid adhesive is heated to become liquid is 40℃-80℃. As described in item 1 of the patent application scope, the shoe manufacturing adhesive bonding method, wherein the sole and the upper are exposed to the electromagnetic polarization device for a period of about 10-100 seconds. As described in the first item of the patent application scope, the shoe-making adhesive bonding method, wherein the electromagnetically polarized solid adhesive is composed of a prepolymer, a disocyanate curing agent, a tackifier, an auxiliary, a filler, an electromagnetically polarized active agent, a resistance adjuster, a catalyst, and a coupling agent.

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