CN101492563A - Rubber plastic material for producing shoe pad, shoe pad and manufacturing method thereof - Google Patents
Rubber plastic material for producing shoe pad, shoe pad and manufacturing method thereof Download PDFInfo
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- CN101492563A CN101492563A CNA2009100095335A CN200910009533A CN101492563A CN 101492563 A CN101492563 A CN 101492563A CN A2009100095335 A CNA2009100095335 A CN A2009100095335A CN 200910009533 A CN200910009533 A CN 200910009533A CN 101492563 A CN101492563 A CN 101492563A
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Abstract
The invention provides a rubber and plastic material used for manufacturing insoles, which comprises copolymer A type SEBS composed of high molecular weight styrene (S)-ethylene (E) and butylene (B)-styrene (S), copolymer B type SEBS composed of middle molecular weight styrene (S)-ethylene (E) and butylene (B)-styrene (S), plasticizer, polyurethane, compatilizer, chemical inhibitor, and inorganic minerals. The invention also provides insoles, which comprises two layers which are an upper layer and a lower layer; wherein, the upper layer is a breathable cloth layer or a fur layer, and the lower layer is a rubber and plastic layer made of rubber and plastic materials. The invention manufactures the insoles by adopting the rubber and plastic materials, can obtain ideal mechanical property and fluidity, and overcomes the problem that the existing insoles loss the elasticity after being used for a period of time to give rise to the reduction of anti-seismic performance, and simultaneously the bottom of the insoles becomes smoothness after being squeezed and deformed to bring about inconvenience for users.
Description
Technical field
The present invention relates to footwear material field, in particular to a kind of rubber-plastics material that is used to make shoe-pad, shoe-pad and preparation method thereof.
Background technology
The existing shoe-pad that generally uses mainly is to be made by cloth, use for some time after amass in footwear because the sweat stain of foot stagnates, simultaneously, during walking again since the gas in the footwear can not in time be discharged to outside the footwear.
In realizing process of the present invention, the contriver finds existing shoe-pad in use for some time, and can follow the string causes anti-seismic performance to reduce, simultaneously the shoe-pad bottom also can be extruded distortion and become smooth, make troubles to the user.
Summary of the invention
The present invention aims to provide a kind of rubber-plastics material that is used to make shoe-pad, shoe-pad and preparation method thereof, can solve existing shoe-pad in use for some time, can follow the string and cause anti-seismic performance to reduce, simultaneously the shoe-pad bottom also can be extruded distortion and become smooth, the problem of making troubles to the user.
In an embodiment of the present invention, a kind of rubber-plastics material that is used to make shoe-pad is provided, has comprised: multipolymer Type B SEBS, softening agent, urethane, compatilizer, oxidation inhibitor, inorganic mineral that the copolymer A type SEBS that high-molecular weight vinylbenzene (S)-ethene (E) and butylene (B)-vinylbenzene (S) block constitutes, vinylbenzene (the S)-ethene (E) of middle molecular weight and butylene (B)-vinylbenzene (S) block constitute.
Preferably, each percentages of ingredients of above-mentioned rubber-plastics material heavily is:
10%-40%A type SEBS, 10%-40%B type SEBS, 50%-70% softening agent, 5%-15% urethane, 8%-12% compatilizer, 0.1%-0.5% oxidation inhibitor, 1%-10% inorganic mineral.
Preferably, above-mentioned softening agent is the mixture of the liquid alkane of 60-68 carbon atom.
Preferably, above-mentioned urethane is Polyurethane Thermoplastic Elastomer.
Preferably, above-mentioned compatilizer is the graftomer of SEBS grafting unsaturated acid or acid anhydrides.
Preferably, above-mentioned oxidation inhibitor is the mixture of Hinered phenols antioxidant or Hinered phenols antioxidant and phosphoric acid ester oxidation inhibitor.
Preferably, above-mentioned inorganic mineral is ultra-fine SiO particle.
In an embodiment of the present invention, also provide a kind of shoe-pad, comprised upper and lower two-layerly, wherein, the upper strata is Ventilate cloth layer or leather and fur layer, the rubber layer of lower floor for adopting rubber-plastics material to make.
Preferably, foot's front part of shoe of above-mentioned shoe-pad has installed circular and/or oval-shaped ventilative shape; The position, the middle part of the side of above-mentioned shoe-pad is provided with circular and/or square ventilative shape; The middle waist of above-mentioned shoe-pad is provided with half pack arrangement that adapts with foot bottom to the rear portion.
In an embodiment of the present invention, also provide a kind of making method of shoe-pad, may further comprise the steps:
Weight by each component of rubber-plastics material that takes by weighing is carried out proportioning;
The rubber-plastics material that is prepared is put into closed high mixing roll mix, take out after putting it into pressurization kneader melting mixing afterwards;
Rubber-plastics material behind the melting mixing is put into the screw rod machine heat, expressed water is cut granulation;
Ventilative cloth or leather and fur are cut into the shape of shoe-pad mould specification, the more ventilative cloth that is cut or leather and fur are bonded at the top of shoe-pad mould, the shoe-pad mould closes;
The rubber-plastics material for preparing is sucked in the injection barrel by air pump, inject the shoe-pad mould molding that glues ventilative cloth or leather and fur after the fusing dilution once more;
Send described shoe-pad mould the typing of to cooling tank subcooling, the cooling back is taken out shoe-pad and is pruned.
The foregoing description is made shoe-pad by adopting above-mentioned rubber-plastics material, because SEBS is combined in the thermoplastic characteristics of polystyrene and the elastomeric characteristic of ethylene-butene copolymer in the same polymkeric substance, its molecular configuration is the triblock copolymer of A-B-A type, SEBS with three such block configurations shows as on the fundamental property feature: polystyrene block is hard and strong at normal temperatures, incompatible with the intermediary elastomeric blocks, be phase-separated state; Polystyrene block form phase region be scattered in elasticity collective mutually in, and elastomeric blocks is formed the unitized construction of physical crosslinking.Because elastomeric blocks hydrogenation fully among the SEBS, so SEBS has the ageing resistance of excellence, and can at high temperature carry out machine-shaping.A type SEBS is different owing to molecular weight with Type B SEBS, two kinds of flowabilities are also different, two kinds the reasonably combined ideal mechanical property that can obtain is with mobile, overcome existing shoe-pad in use for some time, can follow the string and cause anti-seismic performance to reduce, simultaneously the shoe-pad bottom also can be extruded distortion and become smooth, the problem of making troubles to the user.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the making method schema of shoe-pad according to an embodiment of the invention.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
The rubber-plastics material that is used to make shoe-pad according to an embodiment of the invention comprises: multipolymer Type B SEBS, softening agent, urethane, compatilizer, oxidation inhibitor, inorganic mineral that the copolymer A type SEBS that high-molecular weight vinylbenzene (S)-ethene (E) and butylene (B)-vinylbenzene (S) block constitutes, vinylbenzene (the S)-ethene (E) of middle molecular weight and butylene (B)-vinylbenzene (S) block constitute.
Present embodiment is made shoe-pad by adopting above-mentioned rubber-plastics material, because SEBS is combined in the thermoplastic characteristics of polystyrene and the elastomeric characteristic of ethylene-butene copolymer in the same polymkeric substance, its molecular configuration is the triblock copolymer of A-B-A type, SEBS with three such block configurations shows as on the fundamental property feature: polystyrene block is hard and strong at normal temperatures, incompatible with the intermediary elastomeric blocks, be phase-separated state; Polystyrene block form phase region be scattered in elasticity collective mutually in, and elastomeric blocks is formed the unitized construction of physical crosslinking.Because elastomeric blocks hydrogenation fully among the SEBS, so SEBS has the ageing resistance of excellence, and can at high temperature carry out machine-shaping.A type SEBS is different owing to molecular weight with Type B SEBS, two kinds of flowabilities are also different, two kinds the reasonably combined ideal mechanical property that can obtain is with mobile, overcome existing shoe-pad in use for some time, can follow the string and cause anti-seismic performance to reduce, simultaneously the shoe-pad bottom also can be extruded distortion and become smooth, the problem of making troubles to the user.
Therefore this shoe-pad does not contain plastic cement tenderizer, Phthalates and heavy metal, has the characteristics of ventilative, tasteless, anti-skidding, antidetonation, shock-resistant, low temperature resistant, high temperature resistant, anti-complications, weathering resistance, anti-ozone and anti-dynamic fatigue.
Preferably, each percentages of ingredients of above-mentioned rubber-plastics material heavily is:
10%-40%A type SEBS, 10%-40%B type SEBS, 50%-70% softening agent, 5%-15% urethane, 8%-12% compatilizer, 0.1%-0.5% oxidation inhibitor, 1%-10% inorganic mineral.
For example, each percentages of ingredients of above-mentioned rubber-plastics material heavily is: 15%A type SEBS, 15%B type SEBS, 50% softening agent, 10% urethane, 8% compatilizer, 0.2% oxidation inhibitor, 1.8% inorganic mineral.
Preferably, above-mentioned softening agent is the mixture of the liquid alkane of 60-68 carbon atom, can improve the hardness of material, and increases the comfort level of sense of touch.
Preferably, above-mentioned urethane is Polyurethane Thermoplastic Elastomer, can prevent distortion effectively, and improves elasticity.
Preferably, above-mentioned compatilizer is the graftomer of SEBS grafting unsaturated acid or acid anhydrides, and melting index is 0.1g-5g/10min, it can the raising system in consistency and dispersiveness of each group, and improve the adhesive property of material and ABS.ABS extensively is used in various handles, toy, auto parts machinery, household electrical appliance electronic product accessory, sealing member, sports equipment, case and bag accessory, tableware, articles for daily use, medical device and the footwear material products owing to have good flowability, rigidity, drug-resistant, glossiness, high thermal resistance.For improving the feel of each based article, often adopt on its surface and coat one deck rubber, because both of ABS and rubber are incompatible, rubber just simply covers its surface, and it is insecure to bond, and easy slippage falls, and compatilizer just can address this problem.
Preferably, above-mentioned oxidation inhibitor is the mixture of Hinered phenols antioxidant or Hinered phenols antioxidant and phosphoric acid ester oxidation inhibitor, and it can improve the processing stability of material and keep secular antioxidant effect.
Preferably, above-mentioned inorganic mineral is ultra-fine SiO particle, and they can play the effect of filling, thereby saves cost, improves the wear resisting property of material.
Shoe-pad according to an embodiment of the invention comprises upper and lower two-layerly, and wherein, the upper strata is Ventilate cloth layer or leather and fur layer, the rubber layer of lower floor for adopting rubber-plastics material to make.
Present embodiment is made shoe-pad by adopting above-mentioned rubber-plastics material, because SEBS is combined in the thermoplastic characteristics of polystyrene and the elastomeric characteristic of ethylene-butene copolymer in the same polymkeric substance, its molecular configuration is the triblock copolymer of A-B-A type, SEBS with three such block configurations shows as on the fundamental property feature: polystyrene block is hard and strong at normal temperatures, incompatible with the intermediary elastomeric blocks, be phase-separated state; Polystyrene block form phase region be scattered in elasticity collective mutually in, and elastomeric blocks is formed the unitized construction of physical crosslinking.Because elastomeric blocks hydrogenation fully among the SEBS, so SEBS has the ageing resistance of excellence, and can at high temperature carry out machine-shaping.A type SEBS is different owing to molecular weight with Type B SEBS, two kinds of flowabilities are also different, two kinds the reasonably combined ideal mechanical property that can obtain is with mobile, overcome existing shoe-pad in use for some time, can follow the string and cause anti-seismic performance to reduce, simultaneously the shoe-pad bottom also can be extruded distortion and become smooth, the problem of making troubles to the user.
Simultaneously, above-mentioned shoe-pad does not contain plastic cement tenderizer, Phthalates and heavy metal, therefore the characteristics that have ventilative, tasteless, anti-skidding, antidetonation, shock-resistant, low temperature resistant, high temperature resistant, anti-complications, weathering resistance, anti-ozone and anti-dynamic fatigue, having overcome existing shoe-pad adopts cloth to be made, after using for some time, because the sweat stain of foot stagnates and amasss in footwear, simultaneously, during walking again since footwear in gas can not in time be discharged to outside the footwear, shoe-pad can produce niff, and then causes taking place problems such as sweaty feet, tinea pedis.
Preferably, foot's front part of shoe of above-mentioned shoe-pad has installed circular and/or oval-shaped ventilative shape; The position, the middle part of the side of above-mentioned shoe-pad is provided with circular and/or square ventilative shape; The middle waist of above-mentioned shoe-pad is provided with half pack arrangement that adapts with foot bottom to the rear portion.
Adopt above-mentioned shoe-pad when walking or motion, because the effect of gravity, this structure design can make insole base portion twist because of being squeezed and regular the variation taken place, thereby the foul smell of sole is discharged outside the footwear from the slit of footwear inside circumference, finally makes sole keep relative dry and comfortable and comfortable.Suppress the generation of smelly pin bifurcation and tinea pedis, embody certain health care characteristic.
Fig. 1 shows the making method schema of shoe-pad according to an embodiment of the invention, may further comprise the steps:
S102 carries out proportioning by the weight of each component of rubber-plastics material that takes by weighing;
S104 puts into closed high mixing roll with the rubber-plastics material that is prepared and mixes, and takes out after putting it into pressurization kneader melting mixing afterwards;
S106 puts into the screw rod machine with the rubber-plastics material behind the melting mixing and heats, and expressed water is cut granulation;
S108 is cut into the shape of shoe-pad mould specification with ventilative cloth or leather and fur, the more ventilative cloth that is cut or leather and fur is bonded at the top of shoe-pad mould, and the shoe-pad mould closes;
S110 sucks the rubber-plastics material for preparing in the injection barrel by air pump, injects the shoe-pad mould molding that glues ventilative cloth or leather and fur after the fusing dilution once more;
S112 sends described shoe-pad mould the typing of to cooling tank subcooling, and the cooling back is taken out shoe-pad and pruned.
Present embodiment is made shoe-pad by adopting above-mentioned rubber-plastics material, can obtain the ideal mechanical property with mobile, overcome existing shoe-pad in use for some time, can follow the string and cause anti-seismic performance to reduce, simultaneously the shoe-pad bottom also can be extruded distortion and become smooth, the problem of making troubles to the user.
Above-mentioned shoe-pad mould is made as the butterfly flip-type, bed die is given prominence to the shape the same with people's sole, face mould is the mould that carving is annotated circle, ellipse and tetragonal emergence and porous feed point, to be designed in the mould from being thinned to thick sloping type structure, what the back of bed die was drilled with a plurality of pinning fixed moulds has a tooth circular hole, is drilled with many straight-through cooling tanks in the middle of the template of face mould
For example, the making method of above-mentioned shoe-pad comprises the steps:
Weight by each component of rubber-plastics material that takes by weighing is carried out proportioning;
The rubber-plastics material that is prepared is put into closed high mixing roll mix, put it into pressurization kneader melting mixing afterwards and take out after 3 minutes, the temperature of melting mixing is 200 ℃;
Rubber-plastics material behind the melting mixing is put into the screw rod machine heat, temperature is 200 ℃, 400 rev/mins of board rotating speeds, and expressed water is cut granulation;
Mould is made as the butterfly flip-type, bed die is given prominence to the shape the same with people's sole, face mould is the mould that carving is annotated circle, ellipse and tetragonal emergence and 12 hole feed points, to be designed in the mould from being thinned to thick sloping type structure, the back of bed die be drilled with two pin fixed moulds the tooth circular hole arranged, be drilled with two straight-through cooling tanks in the middle of the template of face mould, diameter is 10mm;
Whole cloth is cut into the size of long 360mm, wide 260mm, flatly is bonded on the face of front mould closed die cloth is stretching again;
The material for preparing is sucked in the injection barrel by air pump, the dilution of fusing once more through 200 ℃, stroke is 3.5mm, injection pressure is 75.0bar, and injection speed is 95%, and the dwell time is 9.5s, dwell pressure is 95.0%, pressurize speed is 95.0%, and be 13.5s inject time, injects the mould molding that glues ventilative cloth;
After the moulding, mould is withdrawn, send cooling tank to-30 ℃ subcooling typing 90s.After the cooling, mould opened product taken out, unnecessary Ventilate cloth or leather and fur are pared off with electronic stamping-out deflasher, the trade mark heating transfer in the good shoe-pad heel position of stamping-out.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. rubber-plastics material that is used to make shoe-pad, it is characterized in that, comprising: multipolymer Type B SEBS, softening agent, urethane, compatilizer, oxidation inhibitor, inorganic mineral that the copolymer A type SEBS that high-molecular weight vinylbenzene (S)-ethene (E) and butylene (B)-vinylbenzene (S) block constitutes, vinylbenzene (the S)-ethene (E) of middle molecular weight and butylene (B)-vinylbenzene (S) block constitute.
2. rubber-plastics material according to claim 1 is characterized in that, each percentages of ingredients of described rubber-plastics material heavily is:
10%-40%A type SEBS, 10%-40%B type SEBS, 50%-70% softening agent, 5%-15% urethane, 8%-12% compatilizer, 0.1%-0.5% oxidation inhibitor, 1%-10% inorganic mineral.
3. rubber-plastics material according to claim 1 is characterized in that, described softening agent is the mixture of the liquid alkane of 60-68 carbon atom.
4. rubber-plastics material according to claim 1 is characterized in that described urethane is Polyurethane Thermoplastic Elastomer.
5. rubber-plastics material according to claim 1 is characterized in that, described compatilizer is the graftomer of SEBS grafting unsaturated acid or acid anhydrides.
6. rubber-plastics material according to claim 1 is characterized in that, described oxidation inhibitor is the mixture of Hinered phenols antioxidant or Hinered phenols antioxidant and phosphoric acid ester oxidation inhibitor.
7. rubber-plastics material according to claim 1 is characterized in that, described inorganic mineral is ultra-fine SiO particle.
8. a shoe-pad is characterized in that, comprises upper and lower two-layerly, and wherein, described upper strata is Ventilate cloth layer or leather and fur layer, the rubber layer of described lower floor for adopting the described rubber-plastics material of claim 1-2 to make.
9. shoe-pad according to claim 8 is characterized in that,
Foot's front part of shoe of described shoe-pad has installed circular and/or oval-shaped ventilative shape;
The position, the middle part of the side of described shoe-pad is provided with circular and/or square ventilative shape;
The middle waist of described shoe-pad is provided with half pack arrangement that adapts with foot bottom to the rear portion.
10. the making method of a shoe-pad is characterized in that, may further comprise the steps:
Weight by described each component of rubber-plastics material of the claim 2 that takes by weighing is carried out proportioning;
The described rubber-plastics material that is prepared is put into closed high mixing roll mix, take out after putting it into pressurization kneader melting mixing afterwards;
Described rubber-plastics material behind the melting mixing is put into the screw rod machine heat, expressed water is cut granulation;
Ventilative cloth or leather and fur are cut into the shape of shoe-pad mould specification, the more ventilative cloth that is cut or leather and fur are bonded at the top of described shoe-pad mould, described shoe-pad mould closes;
The described rubber-plastics material for preparing is sucked in the injection barrel by air pump, inject the described shoe-pad mould molding that glues ventilative cloth or leather and fur after the fusing dilution once more;
Send described shoe-pad mould the typing of to cooling tank subcooling, the cooling back is taken out shoe-pad and is pruned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100095335A CN101492563A (en) | 2009-02-18 | 2009-02-18 | Rubber plastic material for producing shoe pad, shoe pad and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100095335A CN101492563A (en) | 2009-02-18 | 2009-02-18 | Rubber plastic material for producing shoe pad, shoe pad and manufacturing method thereof |
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| CN101492563A true CN101492563A (en) | 2009-07-29 |
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| CNA2009100095335A Pending CN101492563A (en) | 2009-02-18 | 2009-02-18 | Rubber plastic material for producing shoe pad, shoe pad and manufacturing method thereof |
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Cited By (12)
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| CN105639837A (en) * | 2016-03-29 | 2016-06-08 | 丁荣誉 | Laminating popcorn polyurethane shoe material and production technology |
| CN105661751A (en) * | 2016-04-01 | 2016-06-15 | 东莞福嵘鞋材有限公司 | Insole preparation method and insole prepared by method |
| CN105795595A (en) * | 2016-03-28 | 2016-07-27 | 王天强 | High-resilience insole and manufacturing method thereof |
| CN105859984A (en) * | 2016-04-16 | 2016-08-17 | 安踏（中国）有限公司 | Composition for preparing SEBS/PP blended grafted modification material and preparation method adopting same |
| CN107674362A (en) * | 2017-10-26 | 2018-02-09 | 谢冠华 | A kind of luminous shoe material and preparation method thereof |
| CN108851341A (en) * | 2018-06-29 | 2018-11-23 | 江苏伊贝实业股份有限公司 | A kind of novel TPU massaging health-care insoles |
| CN109106002A (en) * | 2018-10-13 | 2019-01-01 | 广州市鸿峥实业有限公司 | A kind of production method of high-elastic comfortable midsole |
| CN109206767A (en) * | 2018-08-20 | 2019-01-15 | 扬州朗劲塑胶实业有限公司 | A kind of TPR flexible glue insole and its manufacturing method |
| JP2019048056A (en) * | 2017-09-11 | 2019-03-28 | パープル イノベーション，エルエルシー | Cushions and shoe insoles comprising elastomeric material and methods of forming the same |
| CN110358243A (en) * | 2019-07-15 | 2019-10-22 | 东莞市兴茂橡塑科技有限公司 | A kind of soft elastic force glue material, preparation method and application resistant to high temperature |
| WO2020000355A1 (en) * | 2018-06-29 | 2020-01-02 | 驰绿国际股份有限公司 | Method for manufacturing shoe member |
| CN113831580A (en) * | 2021-10-22 | 2021-12-24 | 中山市志捷鞋业技术服务有限公司 | Double-hardness insole and preparation method thereof |
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2009
- 2009-02-18 CN CNA2009100095335A patent/CN101492563A/en active Pending
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| CN105795595A (en) * | 2016-03-28 | 2016-07-27 | 王天强 | High-resilience insole and manufacturing method thereof |
| CN105639837A (en) * | 2016-03-29 | 2016-06-08 | 丁荣誉 | Laminating popcorn polyurethane shoe material and production technology |
| CN105661751A (en) * | 2016-04-01 | 2016-06-15 | 东莞福嵘鞋材有限公司 | Insole preparation method and insole prepared by method |
| CN105859984A (en) * | 2016-04-16 | 2016-08-17 | 安踏（中国）有限公司 | Composition for preparing SEBS/PP blended grafted modification material and preparation method adopting same |
| JP2019048056A (en) * | 2017-09-11 | 2019-03-28 | パープル イノベーション，エルエルシー | Cushions and shoe insoles comprising elastomeric material and methods of forming the same |
| JP2021020115A (en) * | 2017-09-11 | 2021-02-18 | パープル イノベーション，エルエルシー | Cushions and shoe insoles comprising elastomeric material and methods of forming same |
| CN107674362A (en) * | 2017-10-26 | 2018-02-09 | 谢冠华 | A kind of luminous shoe material and preparation method thereof |
| WO2020000355A1 (en) * | 2018-06-29 | 2020-01-02 | 驰绿国际股份有限公司 | Method for manufacturing shoe member |
| CN108851341A (en) * | 2018-06-29 | 2018-11-23 | 江苏伊贝实业股份有限公司 | A kind of novel TPU massaging health-care insoles |
| CN109206767A (en) * | 2018-08-20 | 2019-01-15 | 扬州朗劲塑胶实业有限公司 | A kind of TPR flexible glue insole and its manufacturing method |
| CN109106002A (en) * | 2018-10-13 | 2019-01-01 | 广州市鸿峥实业有限公司 | A kind of production method of high-elastic comfortable midsole |
| CN109106002B (en) * | 2018-10-13 | 2021-07-20 | 广州市鸿峥实业有限公司 | Production method of high-elastic comfortable insole |
| CN110358243A (en) * | 2019-07-15 | 2019-10-22 | 东莞市兴茂橡塑科技有限公司 | A kind of soft elastic force glue material, preparation method and application resistant to high temperature |
| CN113831580A (en) * | 2021-10-22 | 2021-12-24 | 中山市志捷鞋业技术服务有限公司 | Double-hardness insole and preparation method thereof |
| CN113831580B (en) * | 2021-10-22 | 2023-02-21 | 中山市志捷鞋业技术服务有限公司 | Double-hardness insole and preparation method thereof |
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