Preparation process of integrated spinning lightly-woven sneaker vamp

Abstract

The invention provides a preparation process of an integrated spinning lightly-woven sneaker vamp. A raw material comprises 100 parts of polyether polyol, 20-30 parts of a chain extender, 0.85-1.20 parts of a catalyst and 5-15 parts of an anti-yellowing auxiliary agent; the raw material B is a polyisocyanate raw material; the addition ratio of the raw material A to the raw material B is (134-147): 90; pressurizing to convey the material to a mixing head of the in-gun mixing bi-component spray gun for high-speed impact mixing, instantly mixing uniformly, and carrying out primary reaction on the raw material A and the raw material B to form a primary reaction mixture to be conveyed to a spray gun opening; and spinning, netting, cooling and shaping. A double-component polyurethane material is mixed and preliminarily reacted by using an in-gun mixing double-component spray gun and then is sprayed out to be attached to a shoe tree model to complete processing of the integrated spinning lightly-woven sports shoe vamp, so that the mechanical property is excellent, the wearing comfort is improved through the ergonomic design, the supporting effect is enhanced, the sports performance is optimized, and damage is prevented; and the process is simplified, the efficiency is improved, raw material waste is reduced, and economy and environmental protection are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of shoe manufacturing, and particularly relates to a preparation process for an integrated spray-spun and light-woven sports shoe upper.

Background Art

[0002] With people starting to pursue a healthy lifestyle, their enthusiasm for sports has risen, and various sports shoes have become standard equipment during exercise. The three major components of modern sports shoes are the upper, midsole, and outsole. Generally, the midsole is considered the core of sports shoes, and every step during exercise is cushioned and rebound-feedbacked by this midsole under the feet. However, it cannot be ignored that the function of the upper, which has a larger contact area with the feet, is also crucial. Wrapping, ventilation, support, and stability, although the upper seems simple, has complex functions. With the strengthening of people's environmental awareness and the introduction of a series of environmental protection regulations, the "dual carbon" goal is imperative. Focusing on reducing carbon emissions is conducive to promoting the green transformation of the economic structure, accelerating the formation of a green production mode, and boosting high-quality development. Most current sports shoe uppers are generally composed of multiple parts such as upper materials, shoe tips, shoe tongues, shoe collars, shoe saddles, shoelaces, and shoe heels, and the connections between different parts are fixed by glue or sewing. Inevitably, a large amount of scrap will appear during the production process, which not only wastes raw materials but also pollutes the environment after being discarded.

[0003] In view of this, the inventor of this case conducted in-depth research on the above problems, and thus this case was born.

Summary of the Invention

[0004] The present invention aims to provide a preparation process for an integrated spray-spun and light-woven sports shoe upper. By using an in-gun mixing two-component spray gun to mix the two-component polyurethane material and then spraying it onto the shoe last model for preliminary reaction to complete the processing of the integrated spray-spun and light-woven sports shoe upper, it can not only provide good mechanical properties but also better conform to ergonomic characteristics to improve wearing comfort, fit the foot shape, enhance support and optimize sports performance while better preventing sports injuries. In addition, compared with the traditional production process, the number of steps is significantly reduced, greatly improving production efficiency, reducing waste in the raw material cutting and processing process during production, and being more economical and environmentally friendly.

[0005] The present invention is realized as follows: A preparation process for an integrated spray-spun and light-woven sports shoe upper includes the following steps:

[0006] Step 1: Prepare raw material A, where raw material A includes 100 parts of polyether polyol, 20 - 30 parts of chain extender, 0.85 - 1.20 parts of catalyst, and 5 - 15 parts of yellowing resistance additive; add raw material A to the mixing tank, after stirring evenly, pump it into the storage tank of component A for circulation, and keep the material temperature controlled at 50 - 60 °C; prepare raw material B, where raw material B is a polyisocyanate raw material; pump raw material B into the storage tank of component B, and conduct circulation under a pressure of 0.2 - 0.3 MPa, and at the same time, it is necessary to control the moisture content in the system and keep the material temperature at 25 - 35 °C;

[0007] Step 2: High-pressure metering, the metering of raw materials A and B is completed by the hydraulic system. After being accurately metered by the system, the materials are pressurized and transported to the mixing head part of the two-component spray gun in the gun.

[0008] Step 3: Mixing, the metered raw material A and raw material B are pumped into the mixing head through a high-pressure pump, and undergo high-speed impact mixing, and are evenly mixed instantly. Raw material A and raw material B undergo a preliminary reaction, the overall viscosity of the raw materials rises, the reaction is exothermic, the temperature increases, forming a preliminary reaction mixture, and then it is transported to the nozzle.

[0009] Step 4: Spinning and netting, the preliminary reaction mixture is sprayed out in a spiral shape under pressure through the spray gun head, and adheres to the shoe last model obliquely below the nozzle. Control the fixation of the spray gun head and the movement of the shoe last model. Through the relative movement of the spray gun head and the shoe last, the filamentous material sprayed out and adhering to the shoe last model is woven into a net-like material, and the net-like material will still continue to react, and then be strengthened to form an integrated shoe upper.

[0010] Step 5: Cooling and shaping, use the method of low-temperature blowing to cool down and shape the integrated shoe upper.

[0011] Further, in Step 1, during mixing, first add the weighed catalyst and yellowing resistance additive to the chain extender and mix evenly, then add it to the weighed polyether polyol and mix evenly. After the polyether polyol is dried to remove water, the temperature needs to be cooled to 40 - 60 °C before adding. Pump the evenly stirred mixture into the storage tank of component A for circulation, and control the temperature at 40 - 60 °C; the viscosity of raw material A is controlled at 2000 - 4000 cps.

[0012] Further, the polyether polyol is a poly(tetrahydrofuran) diol containing primary hydroxyl groups with a molecular weight of 1000 - 3000.

[0013] Further, the water content of the poly(tetrahydrofuran) diol containing primary hydroxyl groups does not exceed 0.15% of the total mass fraction of the reaction system.

[0014] Further, the chain extender is a mixture of ethylene glycol and diethyltoluenediamine, and the weight ratio of ethylene glycol to diethyltoluenediamine is (6 - 8):(2 - 4).

[0015] Further, the catalyst is a mixture of dibutyltin dilaurate and triethylenediamine, and the ratio of dibutyltin dilaurate to triethylenediamine is (20 - 25):1.

[0016] Further, the polyisocyanate raw material is liquefied MDI with a functionality of 2.05 - 2.15.

[0017] Further, in Step 2, the addition ratio of Raw Material A to Raw Material B is (134 - 147):90.

[0018] Further, in Step 2, the pressure during pressurization is controlled at 14 - 21 MPa, and the mold temperature is controlled at 30 - 50 °C.

[0019] Further, in Step 4, the shoe last model needs to be surface-treated with a release agent before use, and the release agent is one or a mixture of silicone-based and wax-based types.

[0020] The advantages of the present invention are as follows: The integrated meltblown and woven sports shoe upper of the present invention adopts an integrated production process. The A and B component raw materials required for synthesizing polyurethane are directly mixed in a two-component spray gun in the gun and then reacted. After that, the polyurethane macromolecular filamentous material is attached to the shoe last model under pressure. By controlling the relative movement of the shoe last model and the spray gun nozzle, the polyurethane filamentous material is "woven" into the upper on the surface of the shoe last model. This process for producing the upper does not have essential parts such as shoe tongues and shoelaces in traditional shoe-making processes. Moreover, during the entire upper production process, no processes such as cutting, bonding, and sewing are required, greatly simplifying the upper production process. At the same time, it also reduces a large amount of waste of scraps, contributing to meeting the requirements of low-carbon environmental protection. The integrated production process and the excellent physical properties of the polyurethane material enable the upper to use less raw materials, have excellent wrapping, breathability, and support. Moreover, the shoe last model can be customized according to different foot shapes, and the manufactured upper is more in line with ergonomic design, reducing foot wear and being more comfortable to wear, better adapting to the foot shape and movement mode, having better protection, and reducing sports injuries.

Specific Embodiments

[0021] To better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below with specific embodiments.

[0022] The present invention provides a preparation process for an integrated meltblown and woven sports shoe upper, including the following steps:

[0023] Step 1: Prepare raw material A. Add raw material A to the mixing tank, stir evenly, and then pump it into the storage tank of component A for circulation, keeping the material temperature controlled at 50 - 60°C; Prepare raw material B. Pump raw material B into the storage tank of component B, and circulate it under a pressure of 0.2 - 0.3 MPa. At the same time, it is necessary to control the moisture content in the system, keeping the material temperature at 25 - 35°C.

[0024] Step 2: High-pressure metering. The metering of raw materials A and B is completed by the hydraulic system. After being accurately metered by the system, the materials are pressurized and transported to the mixing head part of the two-component spray gun inside the gun; The two-component spray gun inside the gun can evenly mix the liquid materials of component A and component B during the spraying process, ensuring the consistency and quality of the spraying effect. The two-component spray gun inside the gun uses GP6536 manufactured by Shanghai Telansen Coating Machinery Co., Ltd.

[0025] Step 3: Mixing. The metered raw material A and raw material B are pumped into the mixing head by high pressure, and undergo high-speed impact mixing, being evenly mixed instantly. Raw material A and raw material B undergo a preliminary reaction, the overall viscosity of the raw materials rises, heat is released during the reaction, the temperature increases, forming a preliminary reaction mixture, and then it is transported to the nozzle.

[0026] Step 4: Spinning and netting. The preliminary reaction mixture is sprayed out in a spiral shape under pressure through the spray gun head, and adheres to the shoe last model obliquely below the nozzle. Control the spray gun head to be fixed and the shoe last model to move. Through the relative movement of the spray gun head and the shoe last, the filamentous material sprayed out and adhered to the shoe last model is woven into a net-like material. The net-like material will still continue to react, and then be reinforced to form an integrated shoe upper.

[0027] Step 5: Cooling and shaping. Use the method of low-temperature blowing to cool down and shape the integrated shoe upper.

[0028] The integrated spunlace light-weave sports shoe upper of the present invention adopts an integrated production process. After directly mixing and reacting the A and B component raw materials required for synthetic polyurethane in the two-component spray gun inside the gun, it is then pressurized to attach the polyurethane macromolecular filamentous material to the shoe last model through the nozzle. By controlling the relative movement of the shoe last model and the spray gun nozzle, the polyurethane filamentous material is "woven" into a shoe upper on the surface of the shoe last model. This process for producing the shoe upper does not have the necessary parts such as shoe tongues and shoelaces in traditional shoe-making processes. Moreover, during the entire shoe upper production process, no processes such as cutting, bonding, and sewing are required, greatly simplifying the shoe upper production process. At the same time, it also reduces a large amount of waste of scraps, contributing to meeting the requirements of low-carbon environmental protection. The integrated production process and the excellent physical properties of the polyurethane material enable the shoe upper to use less raw materials, have excellent wrapping, breathability, and support. Moreover, the shoe last model can be customized according to different foot shapes, and the manufactured shoe upper is more in line with ergonomic design, reducing foot wear and being more comfortable to wear, better adapting to the foot shape and movement mode, having better protection, and reducing sports injuries.

[0029] Preferably, in step 1, the raw material A includes 100 parts of polyether polyol, 20 - 30 parts of chain extender, 0.85 - 1.20 parts of catalyst, and 5 - 15 parts of anti - yellowing agent; when mixing, first add the weighed catalyst and anti - yellowing agent into the chain extender and mix evenly, then add it into the weighed polyether polyol and mix evenly. After the polyether polyol is dried and dewatered, the temperature needs to be cooled to 40 - 60 °C before adding. The stirred mixture is pumped into the A - component storage tank for circulation, and the temperature is controlled at 40 - 60 °C; the viscosity of the raw material A is controlled at 2000 - 4000 cps.

[0030] Preferably, the polyether polyol is polytetrahydrofuran diol (PTMG) with a molecular weight of 1000 - 3000 and containing primary hydroxyl groups. PTMG is a long - chain macromolecule. The larger the molecular weight, the more it can promote the micro - phase separation of polymer macromolecules during the reaction, which is beneficial to improving the product performance. However, if the molecular weight is too large, it will easily cause a decrease in the fluidity of the initial reaction liquid, which is not conducive to the mixing of the material liquid and will cause insufficient reaction. Therefore, the molecular weight of PTMG is selected to be 1000 - 3000. PTMG is a white waxy solid at room temperature and needs to be heated to melt it into a liquid state, and the heat - preservation temperature is controlled at 40 - 60 °C. The drying and dewatering process of PTMG: temperature 120 - 150 °C, time 2 - 3 hours.

[0031] Preferably, the water content of the polytetrahydrofuran diol (PTMG) containing primary hydroxyl groups does not exceed 0.15% of the total mass of the reaction system. Since the raw material B is a polyisocyanate raw material, 1 part by mass of water can consume 15 - 17 parts by mass of the polyisocyanate raw material. Therefore, the water content of PTMG is limited not to exceed 0.15% of the total mass of the reaction system to avoid consuming too much polyisocyanate raw material.

[0032] Preferably, the chain extender is a mixture of ethylene glycol (EG) and diethyltoluenediamine (DETDA), and the weight ratio of ethylene glycol (EG) to diethyltoluenediamine (DETDA) is (6 - 8):(2 - 4). Selecting small - molecule EG and DETDA as the chain extender can effectively reduce the viscosity of the raw material A and improve the mutual solubility of the two raw material systems. DETDA is an amine - type chain extender with high reaction activity. The amount of DETDA used needs to be controlled not to exceed 10% (total mass of the reaction system), otherwise the reaction time is too fast and it is difficult to control the stability of the process.

[0033] Preferably, the catalyst is a mixture of dibutyltin dilaurate (DBTDL) and triethylenediamine (TEDA), and the ratio of dibutyltin dilaurate (DBTDL) to triethylenediamine (TEDA) is (20 - 25):1. Selecting TEDA and DBTDL for mixed use can play a synergistic role, enabling a good balance between chain extension reaction and cross-linking reaction in the process of synthesizing macromolecules. The catalyst can promote the reaction between the isocyanate group (-NCO) of the polyisocyanate raw material and the active hydrogen of the polyol (-OH) of the polyether polyol, which is beneficial to the rapid molding of macromolecules. However, compared with DBTDL, while TEDA catalyzes the reaction of -NCO and -OH, it also promotes the reaction between -NCO and water, and the efficiency of TEDA promoting the -NCO-water reaction is 15 - 20 times higher than that of DBTDL. In order to avoid consuming the isocyanate group by reacting with excessive moisture, the mass fraction of TEDA in the catalyst shall not exceed 5% of DBTDL.

[0034] Preferably, the yellowing resistance aid is the UV-1210 yellowing resistance aid produced by Dongguan Romy New Materials Technology Co., Ltd.

[0035] Preferably, in step 1, the B raw material is a polyisocyanate raw material, and the polyisocyanate raw material is preferably liquefied MDI with a functionality of 2.05 - 2.15. Liquefied MDI is a liquid at room temperature and is liquefied MDI modified with carbodiimide. Its functionality cannot be too high, otherwise it will cause the material to be too hard and have poor processability, which is not conducive to post-treatment. Selecting a functionality slightly higher than 2 can endow the material with better elasticity and excellent mechanical properties. In order to reduce the possibility of self-polymerization of liquefied MDI and its volatility at high temperature, the temperature of the B component storage tank is controlled at 25 - 35°C.

[0036] Preferably, in step 2, the addition ratio of the A raw material to the B raw material is (134 - 147):90, aiming to ensure the -NCO / -OH ratio in the system to meet the need for the system to react to form a network cross-linking. In order to ensure that the two-component stock solution can be instantaneously mixed evenly, the pressure during pressurization is controlled at 14 - 21 MPa, and the mold temperature is controlled at 30 - 50°C.

[0037] Preferably, in step 4, the two-component spray gun for in-gun mixing is fixed on the machine table (the machine table is immovable) to ensure the stability of the spiral filamentary primary fibers ejected from the spray gun nozzle; while the shoe last model is fixed on a robotic arm, which can flexibly perform operations such as three-dimensional movement and rotation. The movement trajectory of the robotic arm is controlled by the PLC system, thereby adjusting the distance and angle between the shoe last model and the nozzle, so that the filamentary fibers ejected from the nozzle can form a sparse or dense fiber web on the shoe last. That is, by changing parameters such as speed, direction, and angle, different requirements for elasticity, breathability, support, etc. in different regions of the shoe upper can be achieved, thus ensuring the best functional requirements with as little material as possible.

[0038] Preferably, in step 4, a release agent needs to be applied to the surface of the shoe last model before use. The release agent is one or a mixture of silicone-based and wax-based materials. Polyurethane is a strongly polar polymer material, and it has a strong adhesion force with metals and polar polymer materials. Using a release agent facilitates the removal of the fiber web formed by spraying for post-processing.

[0039] The beneficial technical effects of the preparation process of the integrated spray-spun and light-woven sports shoe upper of the present invention are illustrated below through several experimental groups and control groups.

[0040] Experimental Group 1

[0041] A preparation process of an integrated spray-spun and light-woven sports shoe upper includes the following steps:

[0042] Step 1: Prepare raw material A. Add 1 part of catalyst and 10 parts of anti-yellowing agent to 25 parts of chain extender and mix evenly, then add it to 100 parts of polyether polyol and mix evenly. After the polyether polyol is dried to remove water, it can be added only after the temperature is cooled to 40 - 60°C. The evenly stirred mixture is pumped into the A-component storage tank for circulation, and the temperature is controlled at 40 - 60°C; the viscosity of the raw material A is controlled at about 3000 cps. The molecular weight of the polyether polyol is 2000; the chain extender is a mixture of EG and DETDA, and the weight ratio of EG to DETDA is 7:3; the catalyst is a mixture of DBTDL and TEDA, and the weight ratio of DBTDL to TEDA is 23:1; the anti-yellowing agent is UV-1210 anti-yellowing agent.

[0043] Add raw material A to the mixing tank, stir evenly, and then pump it into the A-component storage tank for circulation, keeping the material temperature controlled at 50 - 60°C;

[0044] Prepare raw material B. Raw material B is liquefied MDI with a functionality of 2.10; pump the liquefied MDI into the B-component storage tank, circulate it under a pressure of 0.2 - 0.3 MPa, and at the same time, control the moisture content in the system, keeping the material temperature at 25 - 35°C;

[0045] Step 2: High-pressure metering. The metering of raw materials A and B is completed by a hydraulic system. The addition ratio of raw material A to raw material B is 140:90. After being accurately metered by the system, the materials are pressurized and transported to the mixing head of the two-component spray gun. The pressure is controlled at 14 - 21 MPa, and the mold temperature is controlled at 30 - 50 °C.

[0046] Step 3: Mixing. The metered raw materials A and B are pumped into the mixing head by a high-pressure pump and undergo high-speed impact mixing, being uniformly mixed instantly. Raw material A and raw material B undergo a preliminary reaction, the overall viscosity of the raw materials increases, heat is released during the reaction, the temperature rises, forming a preliminary reaction mixture, and then it is transported to the nozzle of the spray gun.

[0047] Step 4: Spinning and netting. The preliminary reaction mixture is sprayed out in a spiral shape under pressure through the spray gun head and adheres to the shoe last model obliquely below the nozzle of the spray gun. The spray gun head is controlled to be fixed and the shoe last model moves. Through the relative movement of the spray gun head and the shoe last, the filamentous materials sprayed out and adhered to the shoe last model are woven into a net-like material. The net-like material will continue to react and further reinforce to form an integrated shoe upper.

[0048] Step 5: Cooling and shaping. The integrated shoe upper is cooled and shaped by using a low-temperature blowing method.

[0049] Experimental group 2

[0050] A preparation process for an integrated spunlace lightweight woven sports shoe upper includes the following steps:

[0051] Step 1: Prepare raw material A. Add 0.85 parts of catalyst and 5 parts of anti-yellowing agent to 20 parts of chain extender and mix evenly, then add it to 100 parts of polyether polyol and mix evenly. After the polyether polyol is dried to remove water, it can be added only after the temperature is cooled to 40 - 60 °C. The stirred mixture is pumped into the A-component storage tank for circulation, and the temperature is controlled at 40 - 60 °C. The viscosity of the raw material A is controlled at about 2000 cps. The molecular weight of the polyether polyol is 1000; the chain extender is a mixture of EG and DETDA, and the weight ratio of EG to DETDA is 6:2; the catalyst is a mixture of DBTDL and TEDA, and the weight ratio of DBTDL to TEDA is 20:1; the anti-yellowing agent is UV-1210 anti-yellowing agent.

[0052] Add raw material A to the mixing tank, stir evenly, and then pump it into the A-component storage tank for circulation, keeping the material temperature controlled at 50 - 60 °C;

[0053] Prepare raw material B. Raw material B is liquefied MDI with a functionality of 2.05. The liquefied MDI is pumped into the B-component storage tank and circulated under a pressure of 0.2 - 0.3 MPa. At the same time, the moisture content in the system needs to be controlled, and the material temperature is kept at 25 - 35 °C.

[0054] Step 2: High-pressure metering. The metering of raw materials A and B is completed by a hydraulic system. The addition ratio of raw material A to raw material B is 134:90. After precise metering by the system, the materials are pressurized and transported to the mixing head of the two-component spray gun inside the gun. The pressure is controlled at 14 - 21 MPa, and the mold temperature is controlled at 30 - 50 °C.

[0055] Step 3: Mixing. The metered raw materials A and B are pumped into the mixing head by a high-pressure pump and undergo high-speed impact mixing, being uniformly mixed instantaneously. A preliminary reaction occurs between raw material A and raw material B, the overall viscosity of the raw materials increases, heat is released during the reaction, the temperature rises, forming a preliminary reaction mixture, and then it is transported to the nozzle of the spray gun.

[0056] Step 4: Spinning and netting. The preliminary reaction mixture is ejected in a spiral shape under pressure through the spray gun head and adheres to the shoe last model obliquely below the nozzle of the spray gun. Control the spray gun head to be fixed and the shoe last model to move. Through the relative movement of the spray gun head and the shoe last, the filamentous material ejected and adhered to the shoe last model is woven into a net-like material. The net-like material will continue to react and further reinforce to form an integrated shoe upper.

[0057] Step 5: Cooling and shaping. Use the method of low-temperature blowing to cool down and shape the integrated shoe upper.

[0058] Experimental group 3

[0059] A preparation process for an integrated spun-laced sports shoe upper, comprising the following steps:

[0060] Step 1: Prepare raw material A. Add 1.20 parts of catalyst and 15 parts of yellowing-resistant additive to 30 parts of chain extender and mix evenly. Then add it to 100 parts of polyether polyol and mix evenly. After the polyether polyol is dried to remove water, it can be added only after the temperature is cooled to 40 - 60 °C. The evenly stirred mixture is pumped into the A-component storage tank for circulation, and the temperature is controlled at 40 - 60 °C. The viscosity of the raw material A is controlled at around 4000 cps. The molecular weight of the polyether polyol is 3000; the chain extender is a mixture of EG and DETDA, and the weight ratio of EG to DETDA is 8:4; the catalyst is a mixture of DBTDL and TEDA, and the weight ratio of DBTDL to TEDA is 25:1; the yellowing-resistant additive is UV-1210 yellowing-resistant additive.

[0061] Add raw material A to the mixing tank, stir evenly, and then pump it into the A-component storage tank for circulation, keeping the material temperature controlled at 50 - 60 °C;

[0062] Prepare raw material B, where raw material B is liquefied MDI with a functionality of 2.15; pump the liquefied MDI into the storage tank for component B and circulate it under a pressure of 0.2 - 0.3 MPa. Meanwhile, it is necessary to control the moisture content in the system and maintain the material temperature at 25 - 35 °C;

[0063] Step 2: High-pressure metering. The metering of raw materials A and B is completed by a hydraulic system. The addition ratio of raw material A to raw material B is 147:90. After being accurately metered by the system, the materials are pressurized and transported to the mixing head of the two-component spray gun in the gun. The pressure is controlled at 14 - 21 MPa, and the mold temperature is controlled at 30 - 50 °C;

[0064] Step 3: Mixing. The metered raw materials A and B are pumped into the mixing head by a high-pressure pump for high-speed impact mixing, and are instantaneously mixed evenly. Raw material A and raw material B undergo a preliminary reaction, the overall viscosity of the raw materials increases, heat is released during the reaction, the temperature rises, forming a preliminary reaction mixture, and then it is transported to the nozzle;

[0065] Step 4: Spinning and netting. The preliminary reaction mixture is ejected in a spiral shape under pressure through the spray gun head and adheres to the shoe last model obliquely below the nozzle. Control the fixation of the spray gun head and the movement of the shoe last model. Through the relative movement of the spray gun head and the shoe last, the filamentous material ejected and adhered to the shoe last model is woven into a net-like material. The net-like material will continue to react and further reinforce to form an integrated shoe upper;

[0066] Step 5: Cooling and shaping. Use the method of low-temperature blowing to cool down and shape the integrated shoe upper.

[0067] Control Group 1

[0068] A preparation process for an integrated spunlace light woven sports shoe upper includes the following steps:

[0069] Step 1: Prepare raw material A. Add 1 part of catalyst and 10 parts of anti-yellowing agent to 25 parts of chain extender and mix evenly, then add it to 100 parts of polyether polyol and mix evenly. After the polyether polyol is dried to remove water, it can be added only after the temperature is cooled to 40 - 60 °C. Pump the evenly stirred mixture into the storage tank for component A and circulate it, with the temperature controlled at 40 - 60 °C; The viscosity of raw material A is controlled at around 3000 cps. The molecular weight of the polyether polyol is 4000; The chain extender is a mixture of EG and DETDA, and the weight ratio of EG to DETDA is 7:3; The catalyst is a mixture of DBTDL and TEDA, and the weight ratio of DBTDL to TEDA is 23:1; The anti-yellowing agent is UV-1210 anti-yellowing agent.

[0070] Add raw material A to the mixing tank, stir evenly, then pump it into the storage tank for component A and circulate it, keeping the material temperature controlled at 50 - 60 °C;

[0071] Prepare raw material B, where raw material B is liquefied MDI with a functionality of 2.10; pump the liquefied MDI into the storage tank for component B and circulate it under a pressure of 0.2 - 0.3 MPa. Meanwhile, it is necessary to control the moisture content in the system and maintain the material temperature at 25 - 35°C;

[0072] Step 2: High-pressure metering. The metering of raw materials A and B is completed by a hydraulic system. The addition ratio of raw material A to raw material B is 140:90. After being accurately metered by the system, the materials are pressurized and transported to the mixing head of a two-component spray gun in the gun. The pressure is controlled at 14 - 21 MPa, and the mold temperature is controlled at 30 - 50°C;

[0073] Step 3: Mixing. The metered raw materials A and B are pumped into the mixing head by a high-pressure pump and undergo high-speed impact mixing, being uniformly mixed instantly. Raw material A and raw material B undergo a preliminary reaction, the overall viscosity of the raw materials increases, heat is released during the reaction, the temperature rises, forming a preliminary reaction mixture, and then it is transported to the nozzle;

[0074] Step 4: Spinning and netting. The preliminary reaction mixture is pressurized by the spray gun head and sprayed out in a spiral shape, adhering to the shoe last model diagonally below the nozzle. Control the fixation of the spray gun head and the movement of the shoe last model. Through the relative movement of the spray gun head and the shoe last, the filamentous material sprayed out and adhering to the shoe last model is woven into a net-like material. The net-like material will continue to react and further reinforce to form an integrated shoe upper;

[0075] Step 5: Cooling and shaping. Use a low-temperature blowing method to cool down and shape the integrated shoe upper.

[0076] Control Group 2

[0077] A preparation process for an integrated spunlace lightweight sports shoe upper includes the following steps:

[0078] Step 1: Prepare raw material A. Add 1 part of catalyst and 10 parts of anti-yellowing agent to 25 parts of chain extender and mix evenly. Then add the mixture to 100 parts of polyether polyol and mix evenly. After the polyether polyol is dried to remove water, it can be added only after the temperature is cooled to 40 - 60°C. Pump the evenly stirred mixture into the storage tank for component A and circulate it, with the temperature controlled at 40 - 60°C; The viscosity of raw material A is controlled at around 3000 cps. The molecular weight of the polyether polyol is 2000; The chain extender is a mixture of EG and DETDA, and the weight ratio of EG to DETDA is 9:1; The catalyst is a mixture of DBTDL and TEDA, and the weight ratio of DBTDL to TEDA is 23:1; The anti-yellowing agent is UV-1210 anti-yellowing agent.

[0079] Add raw material A to the mixing tank, stir evenly, and then pump it into the storage tank for component A and circulate it, maintaining the material temperature control at 50 - 60°C;

[0080] Prepare raw material B, where raw material B is liquefied MDI with a functionality of 2.10; pump the liquefied MDI into the storage tank for component B and circulate it under a pressure of 0.2 - 0.3 MPa. Meanwhile, it is necessary to control the moisture content in the system and maintain the material temperature at 25 - 35 °C;

[0081] Step 2: High-pressure metering. The metering of raw materials A and B is completed by a hydraulic system. The addition ratio of raw material A to raw material B is 140:90. After being accurately metered by the system, the materials are pressurized and transported to the mixing head of the two-component spray gun in the gun. The pressure is controlled at 14 - 21 MPa, and the mold temperature is controlled at 30 - 50 °C;

[0082] Step 3: Mixing. The metered raw materials A and B are pumped into the mixing head by a high-pressure pump and undergo high-speed impact mixing, being uniformly mixed instantaneously. Raw material A and raw material B undergo a preliminary reaction, the overall viscosity of the raw materials increases, heat is released during the reaction, the temperature rises, forming a preliminary reaction mixture, and then it is transported to the nozzle;

[0083] Step 4: Spinning and netting. The preliminary reaction mixture is sprayed out in a spiral shape under pressure through the spray gun head and adheres to the shoe last model obliquely below the nozzle. Control the fixed spray gun head and the moving shoe last model. Through the relative movement of the spray gun head and the shoe last, the filamentous material sprayed out and adhered to the shoe last model is woven into a net-like material. The net-like material will continue to react and further reinforce to form an integrated shoe upper;

[0084] Step 5: Cooling and shaping. Use a low-temperature blowing method to cool down and shape the integrated shoe upper.

[0085] Control Group 3

[0086] A preparation process for an integrated spun-laced sports shoe upper includes the following steps:

[0087] Step 1: Prepare raw material A. Add 1 part of catalyst and 10 parts of anti-yellowing agent to 25 parts of chain extender and mix evenly, then add it to 100 parts of polyether polyol and mix evenly. After the polyether polyol is dried to remove water, it can only be added after the temperature is cooled to 40 - 60 °C. Pump the evenly stirred mixture into the storage tank for component A and circulate it, with the temperature controlled at 40 - 60 °C; The viscosity of the raw material A is controlled at around 3000 cps. The molecular weight of the polyether polyol is 2000; The chain extender is a mixture of EG and DETDA, and the weight ratio of EG to DETDA is 7:3; The catalyst is a mixture of DBTDL and TEDA, and the weight ratio of DBTDL to TEDA is 15:1; The anti-yellowing agent is UV-1210 anti-yellowing agent.

[0088] Add raw material A to the mixing tank, stir evenly, then pump it into the storage tank for component A and circulate it, keeping the material temperature controlled at 50 - 60 °C;

[0089] Prepare raw material B, where raw material B is liquefied MDI with a functionality of 2.10; pump the liquefied MDI into the B-component storage tank, circulate it under a pressure of 0.2 - 0.3 MPa, and at the same time, control the moisture content in the system and keep the material temperature at 25 - 35°C;

[0090] Step 2: High-pressure metering. The metering of raw materials A and B is completed by a hydraulic system. The addition ratio of raw material A to raw material B is 140:90. After being accurately metered by the system, the materials are pressurized and transported to the mixing head part of the two-component spray gun in the gun. The pressure is controlled at 14 - 21 MPa, and the mold temperature is controlled at 30 - 50°C;

[0091] Step 3: Mixing. The metered raw materials A and B are pumped into the mixing head by a high-pressure pump, and they are mixed by high-speed impact. They are mixed evenly instantly. Raw material A and raw material B undergo a preliminary reaction, the overall viscosity of the raw materials increases, heat is released during the reaction, the temperature rises, forming a preliminary reaction mixture, and then it is transported to the nozzle;

[0092] Step 4: Spinning and netting. The preliminary reaction mixture is ejected in a spiral shape under pressure through the spray gun head and adheres to the shoe last model obliquely below the nozzle. Control the fixed spray gun head and the moving shoe last model. Through the relative movement of the spray gun head and the shoe last, the filamentous materials ejected and adhered to the shoe last model are woven into a net-like material. The net-like material will continue to react and further reinforce to form an integrated shoe upper;

[0093] Step 5: Cooling and shaping. Use the method of low-temperature blowing to cool down and shape the integrated shoe upper.

[0094] Control Group 4

[0095] A preparation process for an integrated spunlace lightweight woven sports shoe upper, comprising the following steps:

[0096] Step 1: Prepare raw material A. Add 1 part of catalyst and 10 parts of yellowing-resistant auxiliary agent to 25 parts of chain extender and mix evenly. Then add it to 100 parts of polyether polyol and mix evenly. After the polyether polyol is dried to remove water, it can be added only after the temperature is cooled to 40 - 60°C. Pump the evenly stirred mixture into the A-component storage tank for circulation, and control the temperature at 40 - 60°C; the viscosity of the raw material A is controlled at about 3000 cps. The molecular weight of the polyether polyol is 2000; the chain extender is a mixture of EG and DETDA, and the weight ratio of EG to DETDA is 7:3; the catalyst is a mixture of DBTDL and TEDA, and the weight ratio of DBTDL to TEDA is 23:1; the yellowing-resistant auxiliary agent is UV-1210 yellowing-resistant auxiliary agent.

[0097] Add raw material A to the mixing tank. After stirring evenly, pump it into the storage tank of component A for circulation, and keep the material temperature controlled at 50 - 60 °C;

[0098] Prepare raw material B. Raw material B is liquefied MDI with a functionality of 2.2. Pump the liquefied MDI into the storage tank of component B and circulate it under a pressure of 0.2 - 0.3 MPa. At the same time, it is necessary to control the moisture content in the system and keep the material temperature at 25 - 35 °C;

[0099] Step 2: High-pressure metering. The metering of raw materials A and B is completed by the hydraulic system. The addition ratio of raw material A and raw material B is 140:90. After being accurately metered by the system, pressurize and convey the material to the mixing head part of the two-component spray gun in the gun. Control the pressure at 14 - 21 MPa and the mold temperature at 30 - 50 °C;

[0100] Step 3: Mixing. The metered raw materials A and B are pumped into the mixing head by high pressure, and they are mixed by high-speed impact. They are mixed evenly instantly. Raw material A and raw material B undergo a preliminary reaction, the overall viscosity of the raw materials increases, heat is released during the reaction, the temperature rises, and a preliminary reaction mixture is formed, and then it is conveyed to the nozzle;

[0101] Step 4: Spinning and netting. The preliminary reaction mixture is sprayed out in a spiral shape under pressure through the spray gun head and adheres to the shoe last model obliquely below the nozzle. Control the spray gun head to be fixed and the shoe last model to move. Through the relative movement of the spray gun head and the shoe last, the filamentous material sprayed out and adhered to the shoe last model is woven into a net-like material. The net-like material will still continue to react, and then reinforce and weave into an integrated shoe upper;

[0102] Step 5: Cooling and shaping. Use the method of low-temperature blowing to cool down and shape the integrated shoe upper.

[0103] Control Group 5

[0104] A preparation process for an integrated spunlace lightweight woven sports shoe upper, comprising the following steps:

[0105] Step 1: Prepare raw material A. Add 1 part of catalyst and 10 parts of anti-yellowing agent to 25 parts of chain extender and mix evenly. Then add it to 100 parts of polyether polyol and mix evenly. After the polyether polyol is dried to remove water, the temperature needs to be cooled to 40 - 60 °C before adding. Pump the evenly stirred mixture into the storage tank of component A for circulation, and control the temperature at 40 - 60 °C. The molecular weight of the polyether polyol is 2000; the chain extender is a mixture of EG and DETDA, and the weight ratio of EG and DETDA is 7:3; the catalyst is a mixture of DBTDL and TEDA, and the weight ratio of DBTDL and TEDA is 23:1; the anti-yellowing agent is UV-1210 anti-yellowing agent.

[0106] Add raw material A to the mixing tank, stir evenly, and then pump into the A component storage tank for circulation, keeping the material temperature controlled at 50-60℃;

[0107] Prepare raw material B, which is liquefied MDI with a functionality of 2.10; pump the liquefied MDI into the B component storage tank and circulate it at a pressure of 0.2-0.3MPa. At the same time, control the moisture content in the system and maintain the material temperature at 25-35°C;

[0108] Step 2: High-pressure metering. The metering of raw materials A and B is completed by the hydraulic system. The addition ratio of raw material A to raw material B is 160:90. After accurate metering by the system, the materials are pressurized and transported to the mixing head of the two-component spray gun in the gun. The pressure is controlled at 14-21MPa and the mold temperature is controlled at 30-50℃.

[0109] Step 3: Mixing: the measured raw materials A and B are pumped into the mixing head through a high-pressure pump for high-speed impact mixing. The raw materials A and B react with each other initially, the overall viscosity of the raw materials increases, the reaction releases heat, the temperature rises, and a preliminary reaction mixture is formed, which is then transported to the spray gun port;

[0110] Step 4: Spinning and netting. The preliminary reaction mixture is pressurized by the spray gun head and sprayed out in a spiral shape, and attached to the shoe last model obliquely below the spray gun mouth. The spray gun head is controlled to be fixed and the shoe last model is moved. Through the relative movement of the spray gun head and the shoe last, the silk material sprayed and attached to the shoe last model is woven into a mesh material. The mesh material will continue to react, and then reinforced and woven into an integrated upper.

[0111] Step 5: Cooling and shaping: Use low-temperature blowing to cool down the integrated upper and shape it.

[0112] Comparison group 6

[0113] A preparation process of an integrated spin-woven light-woven sports shoe upper comprises the following steps:

[0114] Step 1: Prepare raw material A, add 1 part of catalyst and 10 parts of anti-yellowing agent to 25 parts of chain extender and mix evenly, then add to 100 parts of polyether polyol and mix evenly, after the polyether polyol is dried and dehydrated, the temperature needs to be cooled to 40-60℃ before adding, and the stirred mixture is poured into the A component storage tank for circulation, and the temperature is controlled at 40-60℃; the viscosity of the raw material A is controlled at around 3000cps. The molecular weight of the polyether polyol is 2000; the chain extender is a mixture of EG and DETDA, and the weight ratio of EG and DETDA is 7:3; the catalyst is a mixture of DBTDL and TEDA, and the weight ratio of DBTDL and TEDA is 23:1; the anti-yellowing agent is UV-1210 anti-yellowing agent.

[0115] Add raw material A to the mixing tank. After stirring evenly, pump it into the storage tank of component A for circulation, and keep the material temperature controlled at 50 - 60°C;

[0116] Prepare raw material B. Raw material B is liquefied MDI with a functionality of 2.10. Pump the liquefied MDI into the storage tank of component B and circulate it under a pressure of 0.2 - 0.3 MPa. At the same time, it is necessary to control the moisture content in the system and keep the material temperature at 25 - 35°C;

[0117] Step 2: High-pressure metering. The metering of raw materials A and B is completed by the hydraulic system. The addition ratio of raw material A to raw material B is 140:90. After precise metering by the system, pressurize and convey the materials to the mixing head part of the two-component spray gun in the gun. Control the pressure at 25 MPa and the mold temperature at 30 - 50°C;

[0118] Step 3: Mixing. The metered raw materials A and B are pumped into the mixing head by high pressure, and undergo high-speed impact mixing, and are evenly mixed instantly. Raw material A and raw material B undergo a preliminary reaction, the overall viscosity of the raw materials increases, heat is released during the reaction, the temperature rises, forming a preliminary reaction mixture, and then it is conveyed to the nozzle;

[0119] Step 4: Spinning and netting. The preliminary reaction mixture is sprayed out in a spiral shape under pressure through the spray gun head and adheres to the shoe last model obliquely below the nozzle. Control the fixed spray gun head and the moving shoe last model. Through the relative movement of the spray gun head and the shoe last, the filamentous material sprayed out and adhered to the shoe last model is woven into a net-like material. The net-like material will still continue to react, and then be reinforced to form an integrated shoe upper;

[0120] Step 5: Cooling and shaping. Use the method of low-temperature blowing to cool down and shape the integrated shoe upper.

[0121] Control group 7

[0122] A preparation process for an integrated spunlace lightweight woven sports shoe upper, comprising the following steps:

[0123] Step 1: Prepare raw material A. Add 1 part of catalyst and 10 parts of yellowing-resistant additive to 25 parts of chain extender and mix evenly. Then add it to 100 parts of polyether polyol and mix evenly. After the polyether polyol is dried to remove water, it needs to be cooled to 40 - 60°C before adding. Pump the evenly stirred mixture into the storage tank of component A for circulation, and control the temperature at 40 - 60°C; The viscosity of the raw material A is controlled at about 3000 cps. The molecular weight of the polyether polyol is 2000; The chain extender is a mixture of EG and DETDA, and the weight ratio of EG to DETDA is 7:3; The catalyst is a mixture of DBTDL and TEDA, and the weight ratio of DBTDL to TEDA is 23:1; The yellowing-resistant additive is UV-1210 yellowing-resistant additive.

[0124] Add raw material A to the mixing tank. After stirring evenly, pump it into the storage tank of component A for circulation, and keep the material temperature controlled at 50 - 60°C;

[0125] Prepare raw material B, where raw material B is liquefied MDI with a functionality of 2.10; pump the liquefied MDI into the storage tank of component B, and circulate it under a pressure of 0.2 - 0.3 MPa. At the same time, it is necessary to control the moisture content in the system and keep the material temperature at 25 - 35°C;

[0126] Step 2: High-pressure metering. The metering of raw materials A and B is completed by the hydraulic system. The addition ratio of raw material A to raw material B is 140:90. After precise metering by the system, pressurize and transport the material to the mixing head part of the two-component spray gun in the gun. Control the pressure at 14 - 21 MPa and the mold temperature at 60°C;

[0127] Step 3: Mixing. The metered raw materials A and B are pumped into the mixing head by high pressure, and they are mixed by high-speed impact. They are mixed evenly instantly. Raw material A and raw material B undergo a preliminary reaction, the overall viscosity of the raw materials increases, heat is released during the reaction, the temperature rises, forming a preliminary reaction mixture, and then it is transported to the nozzle;

[0128] Step 4: Spinning and netting. The preliminary reaction mixture is sprayed out in a spiral shape under pressure through the spray gun head and adheres to the shoe last model obliquely below the nozzle. Control the spray gun head to be fixed and the shoe last model to move. Through the relative movement of the spray gun head and the shoe last, the filamentous material sprayed out and adhered to the shoe last model is woven into a net-like material. The net-like material will continue to react, and then be reinforced to form an integrated shoe upper;

[0129] Step 5: Cooling and shaping. Use the method of low-temperature blowing to cool down and shape the integrated shoe upper.

[0130] Table 1 Analysis and comparison of each experimental group and control group

[0131]

[0132]

[0133] As can be seen from Table 1:

[0134] 1. Control of the molecular weight of polyether polyol (Control Example 1)

[0135] In Experimental Groups 1 to 3, the molecular weight is 1000 - 3000, avoiding the decrease in the fluidity of the reaction solution caused by too high a molecular weight (such as 4000 in Control Example 1). Too large a molecular weight will significantly increase the system viscosity, hinder the full mixing of components A and B, and ultimately lead to local hard lumps on the shoe upper, a decrease in tensile strength, and uneven air permeability. The molecular weight range of Examples 1 to 3 can ensure the mixing uniformity and reaction completeness, forming a net-like material with a stable structure.

[0136] 2. Optimization of chain extender ratio (Comparative Example 2)

[0137] The ratio of EG to DETDA in Examples 1 to 3 (6-8:2-4) balances the system viscosity and crosslinking density through synergistic action. The excessively high ratio of EG in Comparative Example 2 (9:1) results in insufficient rigidity of the molecular chain, a significant reduction in the material resilience (down 35%), and easy deformation of the upper. The ratios in Examples 1 to 3 can maintain low viscosity (2000-4000cps) to facilitate mixing, and can form a moderate crosslinking structure to ensure high resilience and wear resistance.

[0138] 3. Catalyst activity regulation (Comparative Example 3)

[0139] The ratio of DBTDL to TEDA (20-25:1) in Examples 1 to 3 accurately controls the reaction rate and avoids the reaction being out of control due to excessive catalytic activity (such as 30:1 in Comparative Example 3). An unbalanced catalytic ratio can cause spinning breakage and a decrease in mechanical properties, while Examples 1 to 3 ensure a smooth reaction and meet mechanical properties standards through matching catalytic activity.

[0140] 4. Functionality matching of liquefied MDI (Comparative Example 4)

[0141] In Examples 1 to 3, the functionality of MDI is controlled at 2.05-2.15 to avoid excessive crosslinking caused by high functionality (such as 2.2 in Comparative Example 4). Too high functionality will significantly increase the brittleness of the material (hardness reaches Shore D65), and it is easy to crack after bending. The low functionality design of Examples 1 to 3 makes the upper material both elastic (Shore D45-50) and durable (bending 10,000 times without damage).

[0142] 5. A / B component ratio and -NCO / -OH balance (Comparative Example 5)

[0143] In Examples 1 to 3, the -NCO / -OH ratio (0.95-1.05) is strictly controlled by the A:B ratio (134-147:90) to ensure complete reaction. In Comparative Example 5, the excessive amount of component A (160:90) leads to an unbalanced -NCO / -OH ratio, insufficient chain extension reaction between macromolecular segments, and poor material properties. In Examples 1 to 3, complete reaction is achieved by optimizing the ratio, and the material properties are good.

[0144] 6. Mixing pressure and processing stability (Comparative Example 6)

[0145] Examples 1 to 3 controlled the reaction process through the synergistic control of the mixing pressure (14 - 21 MPa) and the mold temperature (30 - 50 °C). In Comparative Example 6, the excessively high pressure (25 MPa) caused turbulence, resulting in the decomposition of the prepolymer and fluctuations in the spinneret diameter (±15%), and ultimately uneven upper thickness (CV value > 12%). The parameter combinations of Examples 1 to 3 ensured uniform filament diameter (0.1 - 0.2 mm) and thickness consistency (CV < 5%).

[0146] 7. Influence of Mold Temperature on Reaction Gradient (Comparative Example 7)

[0147] Examples 1 to 3 regulated the reaction gradient through the mold temperature (30 - 50 °C) to ensure that the filamentous material fully adhered to the shoe last and formed a complete network structure. In Comparative Example 7, the excessively high mold temperature (60 °C) accelerated curing, resulting in a 40% decrease in the adhesion rate and the fracture of the network structure. The mold temperature range of Examples 1 to 3 enabled an adhesion rate > 95% and uniform material networking.

[0148] Although the specific embodiments of the present invention have been described above, those skilled in the art of this technology should understand that the specific embodiments we described are illustrative rather than used to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered by the scope protected by the claims of the present invention.

Claims

1. A process for preparing an integrated spin-woven light-woven sports shoe upper, characterized in that: The steps include: Step 1: Prepare raw material A, which includes 100 parts of polyether polyol, 20-30 parts of chain extender, 0.85-1.20 parts of catalyst, and 5-15 parts of anti-yellowing additive; add raw material A to a mixing tank, stir evenly, and then pump into a component A storage tank for circulation, keeping the material temperature at 50-60°C; prepare raw material B, which is a polyisocyanate raw material; pump the raw material B into a component B storage tank, and circulate it under a pressure of 0.2-0.3MPa, and at the same time, control the moisture content in the system and keep the material temperature at 25-35°C; Step 2: High-pressure metering: the metering of raw materials A and B is completed by the hydraulic system. After accurate metering by the system, the materials are pressurized and transported to the mixing head of the two-component spray gun in the gun; Step 3: Mixing: the measured raw materials A and B are pumped into the mixing head through a high-pressure pump for high-speed impact mixing. The raw materials A and B react with each other initially, the overall viscosity of the raw materials increases, the reaction releases heat, the temperature rises, and a preliminary reaction mixture is formed, which is then transported to the spray gun port; Step 4: Spinning and netting. The preliminary reaction mixture is pressurized by the spray gun head and sprayed out in a spiral shape, and attached to the shoe last model obliquely below the spray gun mouth. The spray gun head is controlled to be fixed and the shoe last model is moved. Through the relative movement of the spray gun head and the shoe last, the silk material sprayed and attached to the shoe last model is woven into a mesh material. The mesh material will continue to react, and then reinforced and woven into an integrated upper. Step 5: Cooling and shaping: Use low-temperature blowing to cool down the integrated upper and shape it.

2. The process for preparing the integrated spin-woven light-woven sports shoe upper according to claim 1, characterized in that: In step 1, when mixing, first add the weighed catalyst and anti-yellowing aid to the chain extender and mix evenly, then add to the weighed polyether polyol and mix evenly. After the polyether polyol is dried and dehydrated, the temperature needs to be cooled to 40-60° C. before adding. The stirred mixture is pumped into the A component storage tank for circulation, and the temperature is controlled at 40-60° C.; the viscosity of the A raw material is controlled at 2000-4000 cps.

3. The process for preparing the integrated spin-woven light-woven sports shoe upper according to claim 2, characterized in that: The polyether polyol is polytetrahydrofuran diol containing primary hydroxyl groups with a molecular weight of 1000-3000.

4. The process for preparing the integrated spin-woven light-woven sports shoe upper according to claim 3, characterized in that: The water content of the polytetrahydrofuran diol containing primary hydroxyl groups does not exceed 0.15% of the total mass fraction of the reaction system.

5. The process for preparing the integrated spin-woven light-woven sports shoe upper according to claim 4, characterized in that: The chain extender is a mixture of ethylene glycol and diethyltoluenediamine, and the weight ratio of the ethylene glycol to the diethyltoluenediamine is (6-8): (2-4).

6. The process for preparing the integrated spin-woven light-woven sports shoe upper according to claim 5, characterized in that: The catalyst is a mixture of dibutyltin dilaurate and triethylenediamine, and the ratio of dibutyltin dilaurate to triethylenediamine is (20-25):

1.

7. The process for preparing the integrated spin-woven light-woven sports shoe upper according to claim 6, characterized in that: The polyisocyanate raw material is liquefied MDI with a functionality of 2.05-2.

15.

8. The process for preparing the integrated spin-woven light-woven sports shoe upper according to claim 1, characterized in that: In step 2, the addition ratio of raw material A and raw material B is (134-147):

90.

9. The process for preparing the integrated spin-woven light-woven sports shoe upper according to claim 8, characterized in that: In step 2, the pressure is controlled at 14-21 MPa and the mold temperature is controlled at 30-50°C during pressurization.

10. The process for preparing the integrated spin-woven light-woven sports shoe upper according to claim 1, characterized in that: In step 4, the surface of the shoe last model needs to be treated with a layer of release agent before use. The release agent is one of silicone and wax or a mixture of these.

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