TWI841452B - Sports shoe - Google Patents

Abstract

A sports shoe is provided. The sports shoe includes a shoe vamp and a shoe sole connected to the shoe vamp. The shoe vamp includes a textile component, where the textile component includes thermoplastic polyester fibers. The shoe sole includes a shoe outsole and a shoe midsole foam disposed between the shoe outsole and the shoe vamp, wherein the shoe outsole includes a vulcanizate and the shoe midsole foam includes a first thermoplastic elastomer. The vulcanizate includes rubber particles, a second thermoplastic elastomer, and an interface compatible resin, wherein the content of the rubber particles is greater than the content of the second thermoplastic elastomer. The rubber particles are dispersed in the second thermoplastic elastomer in a form of spherical particles with particle sizes of about 0.5 to 10 μm.

Description

Sports Shoes

The present invention relates to sports shoes, in particular to sports shoes made of thermoplastic material.

Traditional sports shoes include an upper, a sole, and an adhesive member connecting the upper and the sole. The traditional upper may include leather, synthetic leather, textile, or a combination thereof. The traditional sole includes a midsole and an outsole, wherein the midsole may include ethylene/vinyl acetate copolymer (EVA) and the outsole may include rubber, polyvinyl chloride (PVC), polyurethane (PU), or a combination thereof.

The materials contained in the upper, midsole and outsole of traditional sports shoes are different. Therefore, the traditional treatment method of discarded sports shoes must include a separation process to separate the upper, midsole and outsole of discarded sports shoes before the crushing process, recycling process or incineration process. The above traditional treatment method of discarded sports shoes has the disadvantages of complicated procedures, poor recycling efficiency and environmental protection.

The present disclosure provides a kind of sports shoe that can be recycled without separating the components of the discarded sports shoe. The discarded sports shoe can be recycled to generate a regenerated material, and the regenerated material can be used to manufacture a sports shoe.

Some embodiments of the present disclosure provide a sports shoe, which includes an upper and a sole connected to the upper. The upper may include a fabric component, wherein the fabric component may include thermoplastic polyester fiber. The sole may include an outsole and a midsole foam disposed between the outsole and the upper. The outsole may include a dynamically cross-linked elastomer and the midsole foam may include a first thermoplastic elastomer. The dynamically cross-linked elastomer may include rubber particles, a second thermoplastic elastomer, and an interface compatible resin, wherein the content of the rubber particles is greater than the content of the second thermoplastic elastomer, and the rubber particles are dispersed in the second thermoplastic elastomer in the form of spherical particles with a particle size of about 0.5 to 10 μm.

"About" used in this disclosure refers to the value including the value and the value within the acceptable deviation range when the measurement problem and measurement error (that is, the limitation of the measurement system) are taken into account by a person of ordinary skill in the art. For example, "about" can represent a value within one or more standard deviations of the value or within ± 30%, 20%, 10%, 5% of the value. The quantity given here is an approximate quantity, that is, in the absence of a specific description of "about", "approximately", "substantially", the meaning of "about", "approximately", "substantially" can still be implied. In this disclosure, the expression "a~b" means that it includes values greater than or equal to a and values less than or equal to b.

It is understood that, although the terms "first", "second", "third", etc. may be used herein to describe various elements, components, regions, layers, and/or parts, these elements, components, regions, layers, and/or parts should not be limited by these terms, and these terms are only used to distinguish different elements, components, regions, layers, and/or parts. Therefore, a first element, component, region, layer, and/or part discussed below may be referred to as a second element, component, region, layer, and/or part without departing from the teachings of some embodiments of the present disclosure.

In some embodiments of the present disclosure, relative terms such as "lower", "upper", "horizontal", "vertical", "below", "above", "top", "bottom", etc. should be understood as the orientation shown in the paragraph and related drawings. This relative terminology is only for the convenience of explanation and does not mean that the device described therein needs to be manufactured or operated in a specific orientation. It is understood that if the device in the attached figure is turned upside down, the elements described on the "lower" side will become elements on the "upper" side. The embodiments of the present disclosure can be understood in conjunction with the attached figures, and the attached figures of the present disclosure are also considered part of the specification. It should be understood that the attached figures of the present disclosure are not drawn to scale. In fact, the size of the elements may be arbitrarily enlarged or reduced in order to clearly show the characteristics of the present disclosure.

Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those with ordinary knowledge in the art to which the present disclosure belongs. It will be further understood that terms defined in commonly used dictionaries should be interpreted as having the same meaning as their meaning in the relevant art and the content of the present disclosure, and will not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

The term "thermoplastic polyester elastomer (TPEE)" disclosed herein refers to a block copolymer composed of a hard segment including polybutylene terephthalate (PBT) and a soft segment including polyether or polyester. Examples of soft segments in polyether-type polyester elastomers may include, but are not limited to, polytetramethylene ether glycol, polyethylene glycol ether, and polypropylene glycol ether. Examples of soft segments in polyester-type polyester elastomers may include, but are not limited to, polyglycolide, polylactide, and polycaprolactone.

The present disclosure provides a sports shoe, which includes an upper and a sole connected to the upper. FIG. 1 is an exploded view of a sports shoe 10 according to an embodiment of the present disclosure. As shown in FIG. 1, the sports shoe 10 includes an upper 101 and a sole 103 connected to the upper 101. The upper 101 and the sole 103 of the present disclosure are respectively described with reference to FIG. 1.

As shown in FIG. 1 , the sole 103 includes an outsole 1031 and a midsole foam 1033 disposed between the outsole 1031 and the upper 101. The midsole foam 1033 can provide functions such as cushioning, rebound, and high comfort. The outsole 1031 has the advantages of high wear resistance and high wet anti-slip properties, and can efficiently convert the stress applied during walking into kinetic energy.

In some embodiments, the midsole foam 1033 may have a specific gravity of about 0.1-0.4 g/mL, a resilience of about 50-70%, and a surface hardness of about 30-60 Shore C hardness. The midsole foam 1033 includes a first thermoplastic elastomer. In some embodiments, the first thermoplastic elastomer may have an intrinsic viscosity (I.V.) of about 0.8-1.9 dL/g and a Shore A hardness of about 60-95.

In some embodiments, the first thermoplastic elastomer may include thermoplastic polyester elastomer (TPEE). In some embodiments, the first thermoplastic elastomer may include a first recycled thermoplastic elastomer or may be composed of a first recycled thermoplastic elastomer. In some embodiments, the first recycled thermoplastic elastomer may come from discarded sports shoes, but the present disclosure is not limited thereto. In some embodiments, the first recycled thermoplastic elastomer may be prepared from discarded polyethylene terephthalate (r-PET) through a chemical depolymerization process and a copolymerization process, and the prepared first recycled thermoplastic elastomer may have an intrinsic viscosity of about 0.8-1.9 dL/g and a Shore A hardness of about 45-95. In some embodiments, the first recycled thermoplastic elastomer may have a Shore A hardness of about 60-95.

In some embodiments, the midsole foam 1033 is made by subjecting the first thermoplastic elastomer to an injection foaming process, a chemical extrusion foaming process, a compression foaming process, an impregnation foaming process, or any combination of the aforementioned processes. Specifically, in some embodiments, the manufacturing process of the midsole foam 1033 includes the steps of preparing a first mixture, preparing first particles, and foaming the first particles. In some embodiments, the first mixture may include a first thermoplastic elastomer, a cell nucleating agent, a cell stabilizer, and other additives. In some embodiments, other additives may include a flow aid and/or an antioxidant, but the present disclosure is not limited thereto. In some embodiments, the first particles may be made by subjecting the first mixture to a mixing process and a pelletizing process. The midsole foam 1033 can be made by subjecting the first particles to a chemical foaming process or a physical foaming process. The chemical foaming process or the physical foaming process can include an injection foaming process, a chemical extrusion foaming process, a molding foaming process, an impregnation foaming process, other suitable foaming processes, or any combination of the aforementioned processes.

In some embodiments, the outsole 1031 has an abrasion resistance of about 50-250 mg and a wet anti-slip coefficient of about 0.2-0.45. In some embodiments, the outsole 1031 includes a dynamically cross-linked elastomer. The outsole 1031 is made by the dynamically cross-linked elastomer through an injection molding process, an extrusion molding process, a hot pressing process, or any combination of the aforementioned processes.

The dynamically cross-linked elastomer may include rubber particles, a second thermoplastic elastomer, and an interface compatible resin, but the present disclosure is not limited thereto. In some embodiments, the content of the rubber particles is greater than the content of the second thermoplastic elastomer, and the rubber particles are dispersed in the second thermoplastic elastomer in the form of spherical particles with a particle size of about 0.5 to 10 μm. In some embodiments, the rubber particles are dispersed in the second thermoplastic elastomer in the form of spherical particles with a particle size of about 0.5 to 5 μm. In some embodiments, the dynamically cross-linked elastomer may include about 100 parts by weight of rubber particles, about 40-90 parts by weight of the second thermoplastic elastomer, and about 5-15 parts by weight of an interface compatible resin (i.e., based on 100 parts by weight of rubber, about 40-90 parts by weight of the second thermoplastic elastomer and about 5-15 parts by weight of the interface compatible resin). In some embodiments, the dynamically cross-linked elastomer may include 100 parts by weight of rubber particles, about 50-80 parts by weight of the second thermoplastic elastomer, and about 8-12 parts by weight of an interface compatible resin (i.e., based on 100 parts by weight of rubber, about 50-80 parts by weight of the second thermoplastic elastomer and about 8-12 parts by weight of the interface compatible resin).

In some embodiments, the second thermoplastic elastomer may have a Shore A hardness of about 45-70 and an intrinsic viscosity of about 0.8-1.9 dL/g. In some embodiments, the second thermoplastic elastomer may include a thermoplastic polyester elastomer (TPEE). In some embodiments, the second thermoplastic elastomer includes a second recycled thermoplastic elastomer. In some embodiments, the second recycled thermoplastic elastomer may come from discarded sports shoes or other thermoplastic waste.

In some embodiments, the rubber particles can be prepared by subjecting the second mixture to a mixing process, a kneading process, and a pelletizing process after preparing the second mixture. The second mixture can include a styrene copolymer rubber, a crosslinking agent, and a crosslinking aid, but the present disclosure is not limited thereto.

The crosslinking agent may include 2,5-dimethyl-2,5-di(tert-butylperoxy)-2,5-dimethylhexane, dicumyl peroxide (DCP), benzoyl peroxide, di-tert-butyl peroxide, or any combination thereof, but the present disclosure is not limited thereto.

The crosslinking aid may include one of trimethylolpropane trimethacrylate (TMPTMA), triallyl isocyanurate (TAIC), trimethylolpropane triacrylate (TMPTA), triallyl cyanurate (TAC), triallyl phosphite (TAP) and triallyl borate (TAB) or any combination thereof, but the present disclosure is not limited thereto.

The styrene copolymer rubber may be any copolymer including a styrene group. In some embodiments, the styrene copolymer rubber may include a cross-linked styrene copolymer having high anti-slip properties. In some embodiments, the styrene copolymer rubber may include a solution polystyrene-butadiene rubber (SSBR), an emulsion polystyrene-butadiene rubber (ESBR), a styrene-ethylene-butylene-styrene (SEBS) rubber, a styrene-ethylene-propylene-styrene (SEPS) rubber, a styrene-butadiene (SB) rubber, a styrene-isoprene-styrene (SIS) rubber, a styrene-butadiene-styrene (SBS) rubber, or any combination thereof, but the present disclosure is not limited thereto.

In some embodiments, the second mixture may further include non-aromatic rubber. The non-aromatic rubber is a rubber that does not include an aromatic group. In some embodiments, the non-aromatic rubber may include one of butadiene rubber (BR), butyl rubber (IIR), brominated butyl rubber (BIIR), natural rubber (NR) or any combination thereof, but the present disclosure is not limited thereto. Non-aromatic rubber can further improve the wear resistance, weather resistance and compression deformation resistance. In some embodiments, the second mixture may include about 100 to 80 parts by weight of styrene copolymer rubber and about 0 to 20 parts by weight of non-aromatic rubber (i.e., the weight ratio of styrene copolymer rubber: non-aromatic rubber is 10 to 8: 0 to 2). In some embodiments, the second mixture may further include other additives. Other additives may include reinforcing additives, antioxidants, plasticizers, and silane coupling agents, or any combination thereof, but the present disclosure is not limited thereto.

The interface compatible resin may include any resin that can make the rubber particles compatible with the interface compatible resin. In some embodiments, the interface compatible resin may include a maleic anhydride grafted polymer, but the present disclosure is not limited thereto.

Examples of maleic anhydride grafted polymers may include, but are not limited to, maleic anhydride grafted polyethylene (PE-MAH), maleic anhydride grafted ethylene-vinyl acetate copolymer (EVA-MAH), maleic anhydride grafted polyolefin elastomer (POE-MAH), maleic anhydride grafted ethylene propylene diene rubber (EPDM-MAH), maleic anhydride grafted styrene-ethylene-butylene-styrene rubber (SEBS-MAH), and styrene maleic anhydride (SMA), but the present disclosure is not limited thereto.

In some embodiments, the grafting rate of the maleic anhydride grafted polymer is about 0.3-2.0%. When the grafting rate of the maleic anhydride grafted polymer is lower than about 0.3%, the second thermoplastic elastomer may not be able to smoothly undergo a complete grafting reaction, and the compatibility of the second thermoplastic elastomer with the rubber particles may not be improved. When the grafting rate of the maleic anhydride grafted polymer is higher than about 2.0%, the rubber particles and the second thermoplastic elastomer may be overly compatible, affecting the subsequent dynamic crosslinking phase reversal behavior.

In some embodiments, the outsole 1031 can be connected to the midsole foam 1033 by polyester hot melt adhesive, but the present disclosure is not limited thereto. In some embodiments, the outsole 1031 can be injected into the midsole foam 1033 by injection molding process, and directly hot melt bonded to the midsole foam 1033 by the high temperature during the injection process without using other connecting agents.

In some embodiments, the sole 103 may further include a reinforcing balancing sheet 1035 disposed between the upper 101 and the midsole foam 1033. The reinforcing balancing sheet 1035 may enhance the anti-bending strength of the sole 103 and improve the comfort of the arch when worn. The reinforcing balancing sheet 1035 may include a third thermoplastic elastomer. In some embodiments, the third thermoplastic elastomer may have an intrinsic viscosity of about 0.8-1.5 dL/g and a Shore D hardness of about 40-60. In some embodiments, the third thermoplastic elastomer may include thermoplastic polyester elastomer (TPEE). In some embodiments, the third thermoplastic elastomer may come from discarded sports shoes or other thermoplastic waste. In some embodiments, the reinforcing balancing sheet 1035 can be made of the third thermoplastic elastomer by an injection molding process, an extrusion molding process, a hot pressing process, or any combination of the aforementioned processes.

In some embodiments, the sole 103 may further include an insole 1037 disposed between the reinforcing balancing sheet 1035 and the upper 101. The insole 1037 may be a foam body, which has high softness to improve comfort. In some embodiments, the insole 1037 may include thermoplastic polyester elastomer (TPEE). In some embodiments, the insole 1037 may include recycled materials from discarded sports shoes or other thermoplastic waste.

The upper 101 includes a fabric component 1011, and the fabric component 1011 may include thermoplastic polyester fiber. In some embodiments, the thermoplastic polyester fiber may be recycled thermoplastic polyester fiber from discarded sports shoes or other thermoplastic waste. In some embodiments, the thermoplastic polyester fiber may be about 50-150 denier and have an intrinsic viscosity of about 0.4-0.8 dL/g. The fabric component 1011 may be a woven component, a knitted component, a nonwoven component, a woven component, or any combination thereof made of thermoplastic polyester fiber, but the present disclosure is not limited thereto. In some embodiments, the fabric component 1011 may further include a fourth thermoplastic elastomer. In some embodiments, the fourth thermoplastic elastomer may be about 50-150 denier and have a Shore D hardness of about 50-90. In some embodiments, the fourth thermoplastic elastomer may include thermoplastic polyester elastomer (TPEE). In some embodiments, the weight ratio of the fourth thermoplastic elastomer to the thermoplastic polyester fiber is 1:4-3:2. In some embodiments, in some embodiments, the fourth thermoplastic elastomer may come from discarded sports shoes or other thermoplastic waste. The fabric component 1011 may be a woven component, a knitted component, a nonwoven component, a textile component, or any combination thereof made of thermoplastic polyester fiber and the fourth thermoplastic elastomer.

The upper 101 may further include a reinforcing component 1013 disposed at the edge of the fabric component 1011, and the reinforcing component 1013 may improve the overall strength of the upper 101 and reduce the possibility of damage to the upper 101. In some embodiments, the reinforcing component 1013 may include a fifth thermoplastic elastomer. The fifth thermoplastic elastomer may have an intrinsic viscosity of about 0.8-1.5 dL/g and a Shore A hardness of about 80-95 or a Shore D hardness of about 40-60. In some embodiments, the fifth thermoplastic elastomer may include a thermoplastic polyester elastomer (TPEE). In some embodiments, the fifth thermoplastic elastomer may come from discarded sports shoes or other thermoplastic waste.

The upper 101 and the sole 103 can be made separately. In some embodiments, the upper 101 and the sole 103 can be connected by polyester hot melt adhesive, but the present disclosure is not limited thereto. In some embodiments, the upper 101 and the sole 103 can be connected by melting the interface of the upper 101 and the sole 103 through a heating connection process. By making all the components of the sports shoe 10 include polyester materials, the sports shoe 10 of the present disclosure can be directly subjected to a physical crushing recycling process without first undergoing a separation process of separating the components of the sports shoe.

The advantages of the present disclosure are described below by providing specific embodiments.

Embodiment 1

1. Upper preparation

Polyethylene terephthalate fiber or recycled polyethylene terephthalate fiber (purchased from Nan Ya Plastics Co., Ltd.) with a fiber specification of about 50-150 denier and an intrinsic viscosity of about 0.4-0.8 dL/g and thermoplastic polyester elastomer fiber (purchased from Litai International Co., Ltd.) with a fiber specification of about 50-150 denier and a Shore D hardness of about 60-80 are made into textile parts using a weaving method.

A thermoplastic polyester elastomer (purchased from DuPont) having an intrinsic viscosity of about 0.8-1.5 dL/g and a Shore A hardness of about 80-95 or a Shore D hardness of about 40-60 is formed into a reinforcing component by film (sheet) extrusion processing, and the reinforcing component is connected to the edge of the above-mentioned textile component by hot pressing bonding to complete the preparation of the shoe upper.

2.Sole preparation

Thermoplastic polyester elastomer particles (purchased from DSM) with a hardness range of about 60-95 Shore A hardness and an intrinsic viscosity of about 0.8-1.9 dL/g are pre-dried at about 60-80° C. for about 3-4 hours. About 0.5 parts by weight of an antioxidant formula (0.25 parts by weight each of hindered phenol antioxidant AO1010 and phosphite antioxidant A168), about 0.5 parts by weight of a cell nucleating agent formula (nano calcium carbonate), about 2.0 parts by weight of a cell stabilizer formula (multifunctional chain expander ADR-4370), and about 1.0 parts by weight of a flow aid formula (stearate) are mixed with about 100 parts by weight of the dried thermoplastic polyester elastomer particles to obtain a midsole mixture. The midsole mixture is fed into a twin-screw extruder (25ψ, L/D=45) by weightless feeding for mixing (screw temperature is about 170~200°C, and rotation speed is about 150~300 rpm). The mixed midsole mixture is subjected to a pelletizing process to obtain midsole particles. The midsole particles are dried at about 80~100°C for about 6~8 hours. Finally, a shoe midsole foam is obtained from the midsole particles by chemical or physical foaming.

About 100 parts by weight of SSBR (purchased from Taiwan Rubber Corporation, model number TAIPOL 1453), about 0.45 parts by weight of dicumyl peroxide (DCP, used as a crosslinking agent, purchased from Grow Yuan Industrial Co., Ltd., model number GY-DCP), about 2 parts by weight of hydroxymethylpropane trimethacrylate (TMPTMA, used as a crosslinking aid, purchased from Double Key Chemical Co., Ltd., model number DOUBLEMER TMPTMA), about 1.45 parts by weight of an antioxidant (AO1050, purchased from Anfeng Industrial Co., Ltd.), about 15 parts by weight of wax oil (purchased from Emperor One Chemical, model number EP wax oil) and about 30 parts by weight of white carbon black were put into a compactor to obtain a rubber mixture. The rubber mixture is kneaded and pelletized at about 60-80°C and a screw speed of about 50-100 rpm to obtain rubber particles with a particle size of about 2-3 mm. Thermoplastic polyester elastomer particles (purchased from DSM, with a hardness range of about 45-70 Shore A hardness, and an intrinsic viscosity of about 0.8-1.9 dL/g) are pre-dried at about 80°C for about 3-4 hours. About 75 parts by weight of dried thermoplastic polyester elastomer particles, about 100 parts by weight of rubber particles, and about 9.2 parts by weight of styrene maleic anhydride (SMA, used as an interfacial compatible resin, purchased from Yuan Hong Co., Ltd., model SMA1000) were fed into a twin-screw extruder (26ψ, L/D=60) for dynamic crosslinking reaction (screw temperature of about 170~200°C, rotation speed of about 150~300 rpm) to obtain a dynamically crosslinked elastomer, at which time the rubber particles were dispersed in the thermoplastic polyester elastomer in the form of spherical particles with a particle size of 0.5~10μm. The dynamically crosslinked elastomer was pelletized to obtain large bottom particles. The outsole particles are dried at about 80-100°C for about 6-8 hours and then injection molded to produce the outsole.

The balance sheet is manufactured by injection molding using thermoplastic polyester elastomer particles (purchased from DSM) with a hardness range of about 40~60 Shore D. The balance sheet is directly injected and hot-melted onto the midsole foam through the injection molding process.

The shoe midsole foam body is bonded to the shoe outsole with polyester hot melt adhesive, or the shoe outsole is directly bonded to the shoe midsole foam body by hot melt injection molding.

3. Sports shoe preparation and performance testing

The upper and the sole are bonded together by polyester hot melt adhesive, or the upper and the sole are connected after melting the interface between the upper and the sole by a heating connection process.

TPE EL250 of DSM of the Netherlands was used as comparative example 1 and TPEE P30BP30B of Toyo of Japan was used as comparative example 2. The wear resistance of the shoe outsole of the embodiment of the present disclosure and comparative examples 1 and 2 was measured by DIN 53516, the anti-slip performance of the shoe outsole of the embodiment of the present disclosure and comparative examples 1 and 2 was measured by ASTM F489, and the hardness of the shoe outsole of the embodiment of the present disclosure and comparative examples 1 and 2 was measured by ASTM D2240. The measurement results are shown in Table 1 below. Table 1 Embodiment Comparison Example 1 Comparison Example 2 Hardness(Shore A) 68 69 70 Wear resistance(mg) 85 100 95 Wet anti-slip coefficient 0.40 0.22 0.20

The specific gravity of the midsole foam measured by ASTM D297 is about 0.1~0.4g/mL, the resilience is about 50~70% and the surface hardness is about 30~60 Shore C hardness.

From the results in Table 1, it can be seen that the sports shoes disclosed in the present invention have good wear resistance and wet anti-skid performance. In addition, from the measurement results of the midsole foam, it can be seen that the sports shoes disclosed in the present invention have the characteristics of high cushioning, high rebound and high comfort. When all parts of the sports shoes disclosed in the present invention are made of thermoplastic polyester material and/or polyester elastomer, they can simultaneously maintain good wear resistance, wet anti-skid performance, high cushioning, high rebound and/or high comfort.

In addition, since all parts of the sports shoes disclosed in the present invention are made of thermoplastic polyester material and/or polyester elastomer, the sports shoes disclosed in the present invention can be directly recycled and reused without first going through a separation process of separating the parts of the sports shoes. After recycling, the sports shoes disclosed in the present invention can be directly melt-processed into various shoe parts, such as shoe outsoles, shoe midsoles or reinforcing balance sheets.

The features of the above embodiments are helpful for those with ordinary knowledge in the art to understand the present invention. Those with ordinary knowledge in the art should understand that the present invention can be used as a basis to design and change other processes and structures to achieve the same purpose and/or the same advantages of the above embodiments. Those with ordinary knowledge in the art should also understand that these equivalent substitutions do not deviate from the spirit and scope of the present invention, and can be changed, replaced, or modified without departing from the spirit and scope of the present invention.

10: Sports shoes 101: Upper 1011: Fabric parts 1013: Reinforcement parts 103: Soles 1031: Outsoles 1033: Midsole foam 1035: Reinforcement balance sheet 1037: Insoles

The present disclosure will be more fully described with reference to the drawings showing exemplary embodiments of the present disclosure, wherein: FIG. 1 is an exploded view of a sports shoe according to an embodiment of the present disclosure.

10: Sports shoes 101: Upper 1011: Fabric parts 1013: Reinforcement parts 103: Soles 1031: Outsoles 1033: Midsole foam 1035: Reinforcement balance sheet 1037: Insoles

Claims (10)

A sports shoe comprises: an upper, wherein the upper comprises a fabric component, wherein the fabric component comprises a thermoplastic polyester fiber; a sole connected to the upper, wherein the sole comprises: a shoe outsole; and a shoe midsole foam body, wherein the shoe midsole foam body comprises a first thermoplastic elastic body, wherein the shoe midsole foam body is arranged between the shoe outsole and the upper; wherein the shoe outsole comprises a dynamically cross-linked elastic body, wherein the dynamic cross-linked elastic body The cross-linked elastomer includes: 100 parts by weight of rubber particles; 40-90 parts by weight of a second thermoplastic elastomer; and 5-15 parts by weight of an interface compatible resin; wherein in the dynamically cross-linked elastomer, the content of the rubber particles is greater than the content of the second thermoplastic elastomer, and the rubber particles are dispersed in the second thermoplastic elastomer in the form of spherical particles with a particle size of 0.5-10 μm. As in claim 1, the sports shoes, wherein the rubber particles include 100-80 parts by weight of styrene copolymer rubber and 0-20 parts by weight of non-aromatic rubber. For example, the sports shoes of claim 1, wherein the outsole has a wear resistance of 50~250mg and a wet anti-slip coefficient of 0.2~0.45. As in claim 1, the sports shoes, wherein the midsole foam has a specific gravity of 0.1-0.4 g/mL, a resilience of 50-70%, and a surface hardness of 30-60 Shore C hardness. As in claim 1, the first thermoplastic elastomer comprises thermoplastic polyester elastomer (TPEE). As in claim 1, the sole further comprises a reinforcing balancing sheet between the upper and the midsole foam, the reinforcing balancing sheet comprises a third thermoplastic elastomer, the third thermoplastic elastomer has an intrinsic viscosity of 0.8-1.5 dL/g and a Shore D hardness of 40-60. As in claim 1, the fabric component further comprises a fourth thermoplastic elastomer, and the fourth thermoplastic elastomer has a Shore D hardness of 50 to 90, and the weight ratio of the fourth thermoplastic elastomer to the thermoplastic polyester fiber is 1:4 to 3:2. As in claim 1, the upper further comprises a reinforcing component at the edge of the fabric component, the reinforcing component comprises a fifth thermoplastic polyester elastomer, the fifth thermoplastic polyester elastomer has an intrinsic viscosity of 0.8-1.5 dL/g and a Shore A hardness of 80-95 or a Shore D hardness of 40-60. As in claim 1, the first thermoplastic elastomer is made from polyethylene terephthalate (r-PET) through a chemical depolymerization process and a copolymerization process, and the first thermoplastic elastomer has an intrinsic viscosity of 0.8-1.9 dL/g and a Shore A hardness of 45-95. As in claim 1, the sports shoe, wherein the second thermoplastic elastomer comprises a thermoplastic polyester elastomer (TPEE).

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