CN113317584B - Comfortable foaming EVA slippers and manufacturing process - Google Patents
Comfortable foaming EVA slippers and manufacturing process Download PDFInfo
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- CN113317584B CN113317584B CN202110613247.0A CN202110613247A CN113317584B CN 113317584 B CN113317584 B CN 113317584B CN 202110613247 A CN202110613247 A CN 202110613247A CN 113317584 B CN113317584 B CN 113317584B
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
- A43B3/10—Low shoes, e.g. comprising only a front strap; Slippers
- A43B3/101—Slippers, e.g. flip-flops or thong sandals
- A43B3/102—Slippers, e.g. flip-flops or thong sandals leaving the heel of the foot bare
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/18—Resilient soles
- A43B13/20—Pneumatic soles filled with a compressible fluid, e.g. air, gas
- A43B13/203—Pneumatic soles filled with a compressible fluid, e.g. air, gas provided with a pump or valve
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
- A43B3/10—Low shoes, e.g. comprising only a front strap; Slippers
- A43B3/107—Low shoes, e.g. comprising only a front strap; Slippers characterised by the material
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
- A43B3/10—Low shoes, e.g. comprising only a front strap; Slippers
- A43B3/108—Low shoes, e.g. comprising only a front strap; Slippers characterised by the sole
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D25/00—Devices for gluing shoe parts
- A43D25/18—Devices for applying adhesives to shoe parts
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D25/00—Devices for gluing shoe parts
- A43D25/20—Arrangements for activating or for accelerating setting of adhesives, e.g. by using heat
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- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The invention discloses a comfortable foaming EVA slipper and a manufacturing process, comprising a vamp and a sole, and is characterized in that: the sole is provided with a first air cushion cavity positioned below the sole and a second air cushion cavity positioned below the heel, a third storage cavity is arranged between the first air cushion cavity and the second air cushion cavity, a plurality of sealed air bags, an air outlet channel positioned on the side wall and an air inlet channel connected with the third storage cavity are arranged in the first air cushion cavity and the second air cushion cavity, the air outlet channel and the air inlet channel are communicated with air in a unidirectional way, and a storage bag which can be detached relative to the sole is arranged in the third storage cavity; according to the slippers disclosed by the invention, the air spring, the dual air cushion cavities of the sole and the heel and the partition type air passing channel progressive layer by layer are formed by arranging the sealing air bags, so that the gravity center change in walking is reasonably utilized in each walking of a user, and the air output is high and the comfort is higher by pressure air supply.
Description
Technical Field
The invention relates to the field of application of high polymer materials, in particular to a comfortable foaming EVA slipper and a manufacturing process thereof.
Background
In order to increase the comfort and elasticity of the slippers, the midsole of the slippers is generally made of softer primary foaming EVA materials, and then the sole is bonded with the sole made of rubber, and the bonding is difficult due to the fact that the sole is made of different materials, so that heating treatment is needed when the EVA is coated with glue, but the expansion phenomenon of the EVA midsole can be caused in the treatment process, the EVA cannot be matched with the sole well, the firmness of the EVA is low, and the degumming phenomenon is easy to cause.
The sole of the foot of the person is rich in sweat glands and acupoints. Wearing leather shoes, travel shoes and fever in feet all the day. The inside of the shoe is wet, and pathogenic bacteria and peculiar smell are easy to generate. In particular, in the case of slippers having a high level of comfort in the home, particularly in the case of a very high level of comfort, sweat is still produced on the sole of the foot in a very high day, and many shoes including air bags, which are currently commercially available, are provided with elastic members, such as springs, for example, in the form of hollow air bags, so that the air bags can be inflated and deflated, and the air with the drugs can be blown to the foot by the breathing air of the air bags, but the design of such shoes requires additional elastic members to assist, so that materials having different hardness are embedded in the sole, the comfort is reduced, particularly, the metal springs have a certain risk, and the breathing air and spitting amount are small, and the comfort effect is also not high.
Disclosure of Invention
The invention aims to provide comfortable foaming EVA slippers and a manufacturing process thereof, so as to solve the problems in the background technology.
The invention provides the following technical scheme: the utility model provides a travelling comfort foaming EVA slippers, includes vamp and sole, its characterized in that: the sole is provided with a first air cushion cavity positioned below the sole and a second air cushion cavity positioned below the heel, a third storage cavity is arranged between the first air cushion cavity and the second air cushion cavity, a plurality of sealing air bags, an air outlet channel positioned on the side wall and an air inlet channel connected with the third storage cavity are arranged in the first air cushion cavity and the second air cushion cavity, the air outlet channel and the air inlet channel are all in one-way conduction with air passing, and a storage bag which can be detached relative to the sole is arranged in the third storage cavity.
Further, the third storage cavity is provided with an opening at the side opposite to the sole, the opening is used for installing and detaching the storage bag, the storage bag is matched with the inner contour of the third storage cavity, and an air outlet pipe with a one-way air valve and an air inlet valve are further arranged on the storage bag in an extending mode.
Further, the sole is arranged to be an upper layer bottom and a lower layer bottom, the sealing air bag is arranged in a sealing way through the adhesion of the upper layer bottom and the lower layer bottom, the outlet of the air outlet channel is provided with a plurality of air outlet holes, the air outlet holes are uniformly distributed on the surface of the sole and the inner side of the vamp, and the opening of the air outlet hole is opposite to the foot.
Further, the storage bag is provided with an air collecting cavity and a storage cavity positioned in the middle of the air collecting cavity, the air collecting cavity is communicated with the storage cavity, and an elastic piece for resetting the deformation of the body of the storage bag is arranged on the storage bag.
Further, a plurality of isolating layers are arranged in the first air cushion cavity and the second air cushion cavity in a grid mode, and the isolating layers are provided with one-way air valve mechanisms which are used for one-way ventilation of air in the first air cushion cavity and the second air cushion cavity.
Further, the one-way valve mechanism comprises an air flow passage and an I-shaped rubber sealing nozzle, wherein the rubber sealing nozzle is embedded on the isolating layer and realizes one-way sealing under the pressure of air.
A manufacturing process of comfortable foaming EVA slippers is characterized in that: the method comprises the following steps:
(1) Firstly, soaking the EVA lower layer bottom and the upper layer bottom which are formed by one-step foaming in a UV (ultraviolet) treatment agent for 2-5 min, sequentially conveying the EVA lower layer bottom and the upper layer bottom into an ultraviolet irradiation machine and an X-ray irradiation machine for irradiation, so that the polarity of the foamed EVA sole is enhanced, and the foamed EVA sole is easy to glue;
(2) Gluing the parts of the vamp, which need to be bonded, of the lower layer bottom, which need to be bonded with the upper layer bottom, gluing the bonding surface of the upper layer bottom, which is opposite to the sealing air bag of the lower layer bottom, conveying the glued vamp, the glued lower layer bottom and the glued upper layer bottom to a first baking machine, and baking at 50-60 ℃;
(3) Secondly, carrying out secondary gluing on the sole subjected to primary gluing according to the gluing part in the step (2), and conveying the vamp, the lower bottom and the upper bottom subjected to secondary gluing to a second baking machine for baking at 60-70 ℃;
(4) Taking out the bottom sheet of the lower layer baked by the second baking machine, and clamping the bottom sheet into a rubber sealing nozzle on an air flow channel formed and reserved for each partition layer;
(5) Bonding the vamp, the lower layer bottom and the upper layer bottom baked by the second baking machine to form a sole, conveying the sole to a third baking machine, baking at 80-90 ℃, and pressing and fixing the sole by a shoe pressing machine until cooling and bonding;
(6) Taking down and detecting the air bags to ensure the formation of sealing air bags for elastically expanding the first air cushion cavity and the second air cushion cavity, and sending the air bags to cold shaping equipment for cold shaping at the temperature of-15-10 ℃ after the detection is finished;
(7) Taking a prefabricated storage bag, placing volatile materials into a storage cavity, plugging the volatile materials into a third storage cavity from the side surface, and plugging an air outlet pipe on the storage bag into an air inlet channel of a first air cushion cavity and an air inlet channel of a second air cushion cavity;
(8) The first air cushion cavity and the second air cushion cavity are pressed to test ventilation performance, so that air is ensured to enter from the object placing bag and is discharged from the air outlet holes of the first air cushion cavity and the second air cushion cavity, and then the air is packaged.
Further, the storage cavity in the storage bag is in a net bag shape, the volatile material can be solid medicine or liquid material with a shell, and the air outlet hole is formed by bonding an upper layer bottom and a lower layer bottom and is provided with an arc opening towards the air outlet of the foot.
The invention has the beneficial effects that: compared with the prior comfort or health care slippers, the slippers of the invention are provided with double air bags at heels and soles, the third cavity between the heel and the soles, which can be used for placing medicines, is used as air intake, so that the length of a runner of air in soles is reduced, the ventilation efficiency is improved, and secondly, the air bags of the invention are internally provided with sealing air bags, the sealing air bags are formed by bonding grooves of the bottoms of the lower layers during forming and groove covers of the bottoms of the upper layers, and the air springs with elasticity are formed by the design to realize the elastic expansion of the air bags, so that the reduction of the softness and the comfort of the soles caused by filling the springs and elastic pieces in the prior art is avoided;
the air bags are internally provided with the isolating layers, each isolating layer is provided with the one-way air guide mechanism, so that air in the air bags can be sequentially guided to the air outlet holes from the air inlet channel, the problem that air flows back and forth in a single air bag to generate less air in the prior art due to sole and soft sole is avoided, the air bags of the application are provided with air flow directions from heel parts to toe parts, and sequentially feed air in a progressive manner, so that the air bags conform to the foot lifting and foot stepping gravity center shifting and force application change of the slippers in each walking of people, and compared with the existing design, the air bag sole of the application has constant and large air outlet amount and higher comfort;
secondly, because EVA heat treatment possibly causes the EVA midsole to stretch out and draw back, can't with perfect match each other, the firm degree of preparation sole is not high, causes the phenomenon problem that comes unstuck easily, this application has adopted multistage brush to glue and heating bonding mode as manufacturing process for the bonding of finished slippers is good in brushing adhesive article looks that advances layer by layer, and the matching degree of upper strata end and lower floor end is high, and bad article rate is low.
Drawings
FIG. 1 is a schematic view of a slipper according to the invention.
FIG. 2 is a schematic view of a partial structure of a separator according to the present invention.
In the figure: 1. a sole; 11. a first cushion chamber; 12. a third storage cavity; 13. a second air cushion chamber; 14. sealing the air bag; 15. an air outlet channel; 16. an air intake passage; 18. a one-way gas valve member; 2. a storage bag; 21. an air collection cavity; 22. a storage cavity; 3. a barrier layer; 31. an air flow passage; 32. rubber sealing mouth.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, the comfortable foamed EVA slippers of the present invention comprise a vamp and a sole 1, the sole 1 is provided with a first air cushion chamber 11 located below the sole and a second air cushion chamber 13 located below the heel, a third storage chamber 12 is disposed between the first air cushion chamber 11 and the second air cushion chamber 13, a plurality of sealed air bags 14, an air outlet channel 15 located on a side wall and an air inlet channel 16 connected with the third storage chamber 12 are disposed in the first air cushion chamber 11 and the second air cushion chamber 13, the air outlet channel 15 and the air inlet channel 16 are both in unidirectional conduction, and a storage bag 2 detachable with respect to the sole 1 is disposed in the third storage chamber 12.
Further, the third storage cavity 12 is opposite to the side opening of the sole 1, the opening is used for installing and detaching the storage bag 2, the storage bag 2 is arranged in a matching manner with the inner contour of the third storage cavity 12, and an air outlet pipe and an air inlet valve with a unidirectional air valve are further arranged on the storage bag in an extending manner.
Further, the sole 1 is arranged as an upper layer bottom and a lower layer bottom, the sealing air bag 14 is sealed by bonding the upper layer bottom and the lower layer bottom, the outlet of the air outlet channel 15 is provided with a plurality of air outlet holes, the air outlet holes are uniformly distributed on the surface of the sole 1 and the inner side of the vamp, and the opening of the air outlet holes is opposite to the foot.
Further, the storage bag 2 is provided with an air collection cavity 21 and a storage cavity 22 positioned in the middle of the air collection cavity 21, the air collection cavity 21 and the storage cavity 22 are communicated, and an elastic element for resetting the deformation of the storage bag 2 is arranged on the storage bag.
Furthermore, a plurality of partition layers 3 are arranged in the first air cushion cavity 11 and the second air cushion cavity in a grid mode, and the partition layers 3 are provided with one-way air valve mechanisms which are used for one-way ventilation of air in the first air cushion cavity 11 and the second air cushion cavity.
Further, the one-way valve mechanism comprises an air flow channel 31 and an I-shaped rubber sealing nozzle 32, wherein the rubber sealing nozzle 32 is embedded on the partition layer 3, and one-way sealing is realized under the pressure of air.
The rubber sealing nozzles 32 of the partition layer 3 are provided with the unidirectional air valve mechanisms for supplying air from heel to toe, and the air is sequentially supplied in a progressive manner when the air is stepped down each time through the contact mode of the heel to toe and the ground each time the foot lands, so that the air is prevented from flowing back and forth in the air bag, and the air output is kept at high efficiency.
Example 1: relates to a manufacturing process of a sole 1 of the slipper, namely a manufacturing process of a comfortable foaming EVA slipper:
(1) Firstly, soaking the EVA lower layer bottom and the upper layer bottom which are formed by one-step foaming in a UV treatment agent for 2-5 min, sequentially conveying the EVA lower layer bottom and the upper layer bottom into an ultraviolet irradiation machine and an X-ray irradiation machine for irradiation, so that the polarity of the foaming EVA sole 1 is enhanced, and the foaming EVA sole is easy to glue;
(2) Gluing the parts of the vamp, which need to be bonded, of the lower layer bottom, which need to be bonded with the upper layer bottom, gluing the bonding surface of the upper layer bottom, which is opposite to the sealing air bag 14 of the lower layer bottom, and conveying the glued vamp, the glued lower layer bottom and the glued upper layer bottom to a first baking machine, and baking at 50-60 ℃;
(3) Secondly, carrying out secondary gluing on the glued sole 1 subjected to primary gluing according to the gluing part in the step (2), and conveying the vamp, the lower bottom and the upper bottom subjected to secondary gluing to a second baking machine for baking at 60-70 ℃;
(4) Taking out the bottom sheet of the lower layer baked by the second baking machine, and clamping the bottom sheet on the air flow channel 31 formed and reserved by each partition layer 3 into a rubber sealing nozzle 32;
(5) Bonding the vamp, the lower layer bottom and the upper layer bottom baked by the second baking machine to form a sole 1, conveying the sole to a third baking machine, baking at 80-90 ℃, and pressing and fixing the sole by a shoe pressing machine until cooling and bonding;
(6) Taking down and detecting the air bags to ensure the formation of the sealed air bags 14 for elastically expanding the first air cushion chamber 11 and the second air cushion chamber, and sending the air bags to cold shaping equipment for cold shaping at the temperature of minus 15-10 ℃ after the detection is finished;
(7) Taking a prefabricated storage bag 2, placing volatile materials into a storage cavity 22, plugging the volatile materials into a third storage cavity 12 from the side surface, and plugging an air outlet pipe on the storage bag 2 into an air inlet channel 16 of a first air cushion cavity 11 and a second air cushion cavity;
(8) The first air cushion cavity 11 and the second air cushion cavity are pressed to test ventilation performance, so that air is ensured to enter from the object placing bag 2 and is discharged from the air outlet holes of the first air cushion cavity 11 and the second air cushion cavity, and then the air is packaged.
Further, the storage cavity 22 in the storage bag 2 is configured as a net bag, the volatile material can be configured as a solid medicine or a liquid material with a shell, and the air outlet hole is formed by bonding an upper layer bottom and a lower layer bottom, and is provided with an arc opening towards the air outlet of the foot.
The slippers provided by the invention are provided with the double air bags at the heels and the soles, the third cavity between the heels and the soles, which can be used for placing medicines, is used as air inlet, so that the length of a runner of air in the soles is reduced, the ventilation efficiency is improved, and the air bags are internally provided with the sealing air bags, the sealing air bags are formed by bonding the grooves of the bottoms of the lower layers during forming and the groove covers of the bottoms of the upper layers, and the elastic air springs are formed by the design to realize the elastic opening of the air bags, so that the softness and the comfort of the soles caused by filling the springs and elastic pieces in the prior art are avoided;
the air bags are internally provided with the isolating layers, each isolating layer is provided with the one-way air guide mechanism, so that air in the air bags can be sequentially guided to the air outlet holes from the air inlet channel, the problem that air flows back and forth in a single air bag to generate less air in the prior art due to sole and soft sole is avoided, the air bags of the application are provided with air flow directions from heel parts to toe parts, and sequentially feed air in a progressive manner, so that the air bags conform to the foot lifting and foot stepping gravity center shifting and force application change of the slippers in each walking of people, and compared with the existing design, the air bag sole of the application has constant and large air outlet amount and higher comfort;
secondly, because EVA heat treatment possibly causes the EVA midsole to stretch out and draw back, can't with perfect match each other, the firm degree of preparation sole is not high, causes the phenomenon problem that comes unstuck easily, this application has adopted multistage brush to glue and heating bonding mode as manufacturing process for the bonding of finished slippers is good in brushing adhesive article looks that advances layer by layer, and the matching degree of upper strata end and lower floor end is high, and bad article rate is low.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a travelling comfort foaming EVA slippers, includes vamp and sole, its characterized in that: the sole is provided with a first air cushion cavity positioned below the sole and a second air cushion cavity positioned below the heel, a third storage cavity is arranged between the first air cushion cavity and the second air cushion cavity, a plurality of sealed air bags, an air outlet channel positioned on the side wall and an air inlet channel connected with the third storage cavity are arranged in the first air cushion cavity and the second air cushion cavity, the air outlet channel and the air inlet channel are communicated with air in a unidirectional way, and a storage bag which can be detached relative to the sole is arranged in the third storage cavity; the third storage cavity is opposite to the side opening of the sole, the opening is used for mounting and dismounting a storage bag, the storage bag is matched with the inner contour of the third storage cavity, and an air outlet pipe with a one-way air valve and an air inlet valve are further arranged on the storage bag in an extending mode; the storage bag is provided with an air collection cavity and a storage cavity positioned in the middle of the air collection cavity, the air collection cavity is communicated with the storage cavity, and an elastic piece for resetting the deformation of the body of the storage bag is arranged on the storage bag; the first air cushion cavity and the second air cushion cavity are internally provided with a plurality of partition layers in a grid mode, and the partition layers are provided with one-way air valve mechanisms which are used for one-way ventilation of air in the first air cushion cavity and the second air cushion cavity; the unidirectional air valve mechanism comprises an air flow passage and an I-shaped rubber sealing nozzle, wherein the rubber sealing nozzle is embedded on the isolating layer and realizes unidirectional sealing under the pressure of air; the sole is arranged to be an upper layer bottom and a lower layer bottom, the sealing air bag is sealed through the adhesion of the upper layer bottom and the lower layer bottom, the outlet of the air outlet channel is provided with a plurality of air outlet holes, the air outlet holes are uniformly distributed on the surface of the sole and the inner side of the vamp, and the opening of the air outlet hole is opposite to the foot.
2. A manufacturing process of comfortable foaming EVA slippers is characterized in that: the method comprises the following steps:
(1) Firstly, soaking the EVA lower layer bottom and the upper layer bottom which are formed by one-step foaming in a UV (ultraviolet) treatment agent for 2-5 min, sequentially conveying the EVA lower layer bottom and the upper layer bottom into an ultraviolet irradiation machine and an X-ray irradiation machine for irradiation, so that the polarity of the foamed EVA sole is enhanced, and the foamed EVA sole is easy to glue;
(2) Gluing the parts of the vamp, which need to be bonded, of the lower layer bottom, which need to be bonded with the upper layer bottom, gluing the bonding surface of the upper layer bottom, which is opposite to the sealing air bag of the lower layer bottom, conveying the glued vamp, the glued lower layer bottom and the glued upper layer bottom to a first baking machine, and baking at 50-60 ℃;
(3) Secondly, carrying out secondary gluing on the sole subjected to primary gluing according to the gluing part in the step (2), and conveying the vamp, the lower bottom and the upper bottom subjected to secondary gluing to a second baking machine for baking at 60-70 ℃;
(4) Taking out the bottom sheet of the lower layer baked by the second baking machine, and clamping the bottom sheet into a rubber sealing nozzle on an air flow channel formed and reserved for each partition layer;
(5) Bonding the vamp, the lower layer bottom and the upper layer bottom baked by the second baking machine to form a sole, conveying the sole to a third baking machine, baking at 80-90 ℃, and pressing and fixing the sole by a shoe pressing machine until cooling and bonding;
(6) Taking down and detecting the air bags to ensure the formation of sealing air bags for elastically expanding the first air cushion cavity and the second air cushion cavity, and sending the air bags to cold shaping equipment for cold shaping at the temperature of-15-10 ℃ after the detection is finished;
(7) Taking a prefabricated storage bag, placing volatile materials into a storage cavity, plugging the volatile materials into a third storage cavity from the side surface, and plugging an air outlet pipe on the storage bag into an air inlet channel of a first air cushion cavity and an air inlet channel of a second air cushion cavity;
(8) The first air cushion cavity and the second air cushion cavity are pressed to test ventilation performance, so that air is ensured to enter from the object placing bag and is discharged from the air outlet holes of the first air cushion cavity and the second air cushion cavity, and then the air is packaged.
3. The process for manufacturing the comfortable foamed EVA slippers according to claim 2, wherein the process comprises the following steps: the storage cavity in the storage bag is in a net bag shape, the volatile materials can be solid medicines or liquid materials with shells, the air outlet holes are formed by bonding an upper layer bottom and a lower layer bottom, and the air outlet holes are provided with radian openings and face to the foot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110613247.0A CN113317584B (en) | 2021-06-02 | 2021-06-02 | Comfortable foaming EVA slippers and manufacturing process |
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| CN202110613247.0A CN113317584B (en) | 2021-06-02 | 2021-06-02 | Comfortable foaming EVA slippers and manufacturing process |
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| US11052286B2 (en) * | 2016-12-15 | 2021-07-06 | Enterprise Engineering Designs, LLC | Smart performance footwear and system |
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| CN2571207Y (en) * | 2002-09-27 | 2003-09-10 | 吴建钰 | Ventilated shoes device capable of replacing insole |
| WO2011050720A1 (en) * | 2009-10-29 | 2011-05-05 | Zheng Guohong | Mold for integral injecting upper-link ventilation shoe, midsole and producing method thereof |
| CN202340952U (en) * | 2011-11-26 | 2012-07-25 | 侯景国 | Ventilatory health-care sandal |
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| CN113317584A (en) | 2021-08-31 |
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