Multi-layer composite EVA (Ethylene Vinyl Acetate) insole structure
By introducing a breathable structure and bamboo charcoal fiber into the EVA midsole, the problem of poor breathability of traditional EVA midsoles is solved, enabling air circulation and odor absorption, thus improving the comfort and cleanliness of the shoes.
Patent Information
- Application Number
- CN202520565944.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Traditional EVA midsole structures lack ventilation space, resulting in poor breathability and the development of odors after prolonged wear, affecting comfort.
A multi-layer composite EVA midsole structure was designed, comprising a breathable structure, expanded polytetrafluoroethylene mesh, and bamboo charcoal fiber. Air circulation is achieved through pores and ventilation holes, while the bamboo charcoal fiber is used to absorb odors.
It improves breathability and cleanliness inside the shoe, reduces odor, enhances comfort, and prevents external moisture from entering.
Smart Images
Figure CN223730820U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of shoe sole, concretely to a multilayer composite EVA insole structure. BACKGROUND
[0002] The general shoe sole includes the three -layer structure of insole, shoe insole and shoe outsole, the shoe outsole sets in the lowermost layer of shoe sole, is used to contact with ground, and the insole sets in the uppermost layer of shoe sole, is used to contact with the sole of user's foot, and the shoe insole sets in the middle layer of shoe sole, and one side is connected with shoe outsole, the other side is connected with insole, plays the role of shock attenuation and support, and EVA material has the advantages such as light, good elasticity, good flexibility and is widely used in insole making, and the traditional insole lacks ventilation space, and the ventilation effect is general, and the overall breathability is poor, and long -time wearing can cause foot odor, and can influence wearing comfort. SUMMARY
[0003] The utility model discloses a multilayer composite EVA insole structure to solve the problems in the background art.
[0004] To achieve the above object, the utility model provides the following technical scheme:
[0005] A multilayer composite EVA insole structure, including eva insole main part and surface layer, the bottom of surface layer is connected with the top of eva insole main part through adhesive bonding, and the surface layer is provided with a ventilation structure between eva insole main part;
[0006] The ventilation structure includes through -hole set up in the top of surface layer both sides, the inner chamber top of eva insole main part is provided with a reserved cavity, and the reserved cavity is communicated with the outside through the through -hole, and the front and rear sides of eva insole main part are provided with air vent at one end, the total number of air vent is nine, and the inside of nine air vent is provided with the expanded polytetrafluoroethylene net, the inside of reserved cavity is also communicated with the outside through air vent, and the inside of reserved cavity is filled with bamboo charcoal fiber.
[0007] As the preferred scheme of the utility model, the surface layer includes sponge layer and bamboo fiber fabric layer, the top of sponge layer is fixedly connected with the bottom of bamboo fiber fabric layer, and the top of surface layer is fixedly connected with massage pad on both sides.
[0008] As the preferred scheme of the utility model, the top of two massage pads is uniformly provided with massage convex block, the diameter of massage convex block is 2-3mm, and the height of massage convex block is 2-3mm.
[0009] The inside of the reserved cavity is provided with an air bag, the top of the air bag is in contact with the bottom of the surface layer, and the inner cavity of the eva midsole body is sequentially provided with a buffer layer, a hard plastic plate and a waterproof layer from top to bottom.
[0010] The top of the buffer layer is in contact with the bottom of the air bag, and the buffer layer is made of TPO foamed microsphere particle material.
[0011] The bottom of the buffer layer and the top of the hard plastic plate are connected through adhesive bonding, the bottom of the hard plastic plate and the top of the waterproof layer are also connected through adhesive bonding, and the waterproof layer is made of TPU material.
[0012] Compared with the prior art, the utility model has the advantages that:
[0013] 1、The utility model discloses a shoe body is provided with a plurality of through -holes and air -vent, and the inside of the shoe body is in air circulation with outside, this design not only helps to keep the dry of foot, can effectively reduce the peculiar smell of the generation of long -time wearing simultaneously, and bamboo charcoal fiber can adsorb peculiar smell, further improve the clean and comfortable of shoe, and the polytetrafluoroethylene net of swelling body has the characteristics of waterproof and air -permeable, can avoid the external moisture and enter the inside of the reserved cavity through the air -vent. ACCURACY OF DRAWINGS
[0014] Figure 1 It is the structural schematic diagram of the utility model;
[0015] Figure 2 It is the enlarged structural schematic diagram of the utility model A place;
[0016] Figure 3 It is the section structure schematic diagram of the surface layer of the utility model;
[0017] Figure 4 It is the inside structure schematic diagram of the utility model eva midsole body.
[0018] In the drawing: 1, eva midsole body;2, surface layer;201, sponge layer;202, bamboo fiber fabric layer;3, massage pad;4, massage convex block;5, air -permeable structure;501, through -hole;502, air -vent;503, polytetrafluoroethylene net of swelling body;504, reserved cavity;505, bamboo charcoal fiber;6, air bag;7, buffer layer;8, hard plastic plate;9, waterproof layer. DETAILED DESCRIPTION
[0019] Clearly and completely describe the technical scheme in the embodiments of the utility model with the embodiments of the utility model below, obviously, the described embodiments are only some of the embodiments of the utility model, not all the embodiments, based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the scope of protection of the utility model.
[0020] In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings, several embodiments of the utility model are given, however, the utility model can be realized in many different forms, and is not limited to the embodiments described herein, on the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.
[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be an intervening element, and when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be an intervening element, the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.
[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs, the terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model, the term "and / or" used herein includes any and all combinations of one or more of the associated listed items.
[0023] Embodiments, please refer to Figure 1 、 Figure 2 、 Figure 4 The utility model provides a technical scheme:
[0024] A multilayer composite EVA midsole structure, including eva midsole main part 1 and surface layer 2, the bottom of surface layer 2 and the top of eva midsole main part 1 are connected by adhesive bonding, and a breathable structure 5 is arranged between surface layer 2 and eva midsole main part 1, the breathable structure 5 includes through holes 501 opened on both sides of the top of surface layer 2, a reserved cavity 504 is arranged at the top of the inner cavity of eva midsole main part 1, the reserved cavity 504 is communicated with the outside through the through holes 501, air vents 502 are arranged at one end of the front and rear sides of eva midsole main part 1, the total number of air vents 502 is nine, the inner side of the nine air vents 502 is provided with expanded polytetrafluoroethylene net 503, the inside of the reserved cavity 504 is also communicated with the outside through the air vents 502, and the inside of the reserved cavity 504 is filled with bamboo charcoal fiber 505.
[0025] As Figure 1 , Figure 3 shown, the surface layer 2 includes sponge layer 201 and bamboo fiber fabric layer 202, the top of the sponge layer 201 and the bottom of the bamboo fiber fabric layer 202 are fixedly connected, the two sides of the top of the surface layer 2 are fixedly connected with massage pads 3, the top of the two massage pads 3 is uniformly provided with massage bumps 4, the diameter of the massage bump 4 is 2-3mm, the height of the massage bump 4 is 2-3mm.
[0026] As Figure 4 shown, the inside of the reserved cavity 504 is provided with an air bag 6, the top of the air bag 6 and the bottom of the surface layer 2 are in contact with each other, the inner cavity of the eva midsole body 1 is sequentially provided with a buffer layer 7, a hard plastic plate 8 and a waterproof layer 9 from top to bottom, the top of the buffer layer 7 and the bottom of the air bag 6 are in contact, the buffer layer 7 is made of TPO foamed microspheres material, the bottom of the buffer layer 7 and the top of the hard plastic plate 8 are connected by adhesive, the bottom of the hard plastic plate 8 and the top of the waterproof layer 9 are also connected by adhesive, the waterproof layer 9 is made of TPU material.
[0027] The working process of the utility model: when using, the massage bump 4 arranged at the front and rear instep of the surface layer 2 can massage the wearer's foot, relieve the fatigue of standing or walking for a long time, at the same time, the air bag 6 and the buffer layer 7 can enhance the comfort of the eva midsole body 1, the hard plastic plate 8 arranged below the buffer layer 7 can avoid sharp objects piercing the sole and causing harm to the wearer, in the process of wearing, the air in the shoe, the reserved cavity 504 and the outside can flow between each other through the through hole 501 and the air vent 502, which helps to keep the feet dry, also can effectively reduce the peculiar smell caused by long-term wearing, at the same time, the bamboo charcoal fiber 505 can adsorb peculiar smell, further improve the cleanliness and comfort of the shoe, the expanded polytetrafluoroethylene net 503 has the characteristics of waterproof and breathable, can avoid external moisture entering the inside of the reserved cavity 504 through the air vent 502.
[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A multi-layer composite EVA midsole structure comprising an eva midsole body (1) and a skin layer (2), characterized in that: The bottom of the surface layer (2) is connected with the top of the eva midsole body (1) by adhesive bonding, and a breathable structure (5) is arranged between the surface layer (2) and the eva midsole body (1). The breathable structure (5) includes through holes (501) opened on both sides of the top of the surface layer (2), the top of the inner cavity of the eva midsole body (1) is provided with a reserved cavity (504), the reserved cavity (504) is communicated with the outside through the through hole (501), and one end of the front and rear sides of the eva midsole body (1) is provided with a ventilation port (502), the total number of the ventilation ports (502) is nine, and the inner sides of the nine ventilation ports (502) are provided with expanded polytetrafluoroethylene nets (503), the inside of the reserved cavity (504) is also communicated with the outside through the ventilation port (502), and the inside of the reserved cavity (504) is filled with bamboo charcoal fibers (505).
2. A multi-layered composite EVA midsole structure according to claim 1, wherein: The surface layer (2) includes a sponge layer (201) and a bamboo fiber fabric layer (202), the top of the sponge layer (201) is fixedly connected with the bottom of the bamboo fiber fabric layer (202), and the top of the surface layer (2) is fixedly connected with the massage pad (3) on both sides.
3. A multi-layered composite EVA midsole structure according to claim 2, wherein: The top of the two massage pads (3) is uniformly provided with massage bumps (4), the diameter of the massage bumps (4) is 2-3mm, and the height of the massage bumps (4) is 2-3mm.
4. The multi-layered composite EVA midsole structure of claim 1, wherein: The inside of the reserved cavity (504) is provided with an air bag (6), the top of the air bag (6) is in contact with the bottom of the surface layer (2), and the inner cavity of the eva midsole body (1) is sequentially provided with a buffer layer (7), a hard plastic plate (8) and a waterproof layer (9) from top to bottom.
5. A multi-layered composite EVA midsole structure according to claim 4, wherein: The top of the buffer layer (7) is in contact with the bottom of the air bag (6), and the buffer layer (7) is made of TPO foaming microsphere particle material.
6. A multi-layered composite EVA midsole structure according to claim 5, wherein: The bottom of the buffer layer (7) is connected with the top of the hard plastic plate (8) by adhesive bonding, the bottom of the hard plastic plate (8) is also connected with the top of the waterproof layer (9) by adhesive bonding, and the waterproof layer (9) is made of TPU material. The bottom of the buffer layer (7) is connected with the top of the hard plastic plate (8) by adhesive bonding, the bottom of the hard plastic plate (8) is also connected with the top of the waterproof layer (9) by adhesive bonding, and the waterproof layer (9) is made of TPU material.