A shoe pad capable of efficiently permeating water and preventing puncture
By using a three-dimensional interwoven structure of aramid 1414 and nylon 6 fibers and polystyrene reinforcement, the problems of insufficient water permeability and puncture resistance of the insole are solved, achieving high efficiency in water permeability, puncture resistance and improved durability.
Patent Information
- Application Number
- CN202423294428.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing insoles are insufficient in terms of water permeability and puncture resistance, making it difficult to simultaneously achieve comfort and safety, and their durability and applicability are also limited.
The fiber felt, made of aramid 1414 and nylon 6 fibers, is three-dimensionally interwoven through vertical and oblique needle punching structures, combined with polystyrene reinforcement materials to form a highly efficient, water-permeable, and puncture-resistant insole structure.
It achieves a combination of high water permeability and puncture resistance, improving comfort and safety while also enhancing the durability and applicability of the insole.
Smart Images
Figure CN223600932U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of shoemaking, and particularly relates to a shoe pad with efficient water permeability and puncture resistance. BACKGROUND
[0002] In daily life and various work scenarios, as an article directly contacting with people's feet, the importance of the performance of shoe pads is increasingly prominent. At present, there are various types of shoe pads on the market, and their materials and structures are different, but there are still deficiencies in efficient water permeability and puncture resistance.
[0003] The prior art closest to the utility model creation mainly includes the following types of shoe pads:
[0004] Traditional cotton shoe pad: this type of shoe pad is usually made of natural fibers such as cotton, has certain moisture absorption and softness, and is comfortable to wear. However, its water permeability is limited, and when the feet sweat a lot, it is difficult to quickly discharge water, which can easily cause the feet to be wet and breed bacteria. At the same time, the puncture resistance of the cotton shoe pad is very poor, and it is almost impossible to provide effective protection for the feet to prevent damage from sharp objects.
[0005] Ordinary rubber shoe pad: rubber shoe pads have good elasticity and wear resistance and can provide a certain buffering effect. However, the air permeability of rubber shoe pads is not good, and the water permeability is also poor, which can easily make the feet hot and humid. Moreover, the puncture resistance of the rubber material itself is limited, and the protection effect for sharp objects is not ideal.
[0006] Some functional shoe pads: there are also some shoe pads on the market that claim to have water permeability or puncture resistance. For example, some shoe pads made of special breathable materials, although they improve the air permeability to some extent, the water permeability still needs to be improved, and the puncture resistance function is often insufficient. Some puncture-resistant shoe pads usually use harder materials or add metal sheets to achieve puncture resistance, but this will greatly reduce the comfort and air permeability of the shoe pad.
[0007] Insufficient water permeability: traditional cotton shoe pads and ordinary rubber shoe pads are difficult to quickly and effectively discharge the sweat and water from the feet, which can easily make the feet in a humid state, not only uncomfortable, but also increase the risk of bacterial growth and cause foot diseases. Even some shoe pads that claim to have water permeability, their water permeability effect cannot meet the needs of people in high-intensity sports, humid environments, etc.
[0008] Poor puncture resistance: most existing shoe pads perform poorly in puncture resistance. Cotton shoe pads have almost no puncture resistance, and ordinary rubber shoe pads and some functional shoe pads have improved to some extent, but the protection effect for sharp objects is still limited. In some special environments, such as construction sites, the wild, etc., it is impossible to provide sufficient safety protection for the feet.
[0009] Performance is difficult to balance: in the prior art, it is often difficult to achieve high water permeability and good puncture resistance at the same time. Some insoles sacrifice breathability and comfort in order to improve puncture resistance, or reduce puncture resistance in order to pursue breathability. In addition, the selection of materials and the design of the structure of the existing insoles also have limitations, which cannot fully utilize the advantages of various materials and achieve the optimization of performance.
[0010] Durability problem: some insoles are prone to wear and deformation after a period of use, resulting in performance degradation. Especially in frequent use or harsh environment, its durability cannot meet people's needs.
[0011] Limited scope of application: the existing insoles are often designed for specific use scenarios or groups, with a narrow scope of application. For example, some sports insoles may perform well during sports, but may not be suitable for daily work or other occasions. While some work insoles may lack in comfort and aesthetics, making them unsuitable for daily wear.
[0012] In the prior art, the needle-punched fiber is generally a loose fiber mat that is vertically needle-punched to form a vertical fiber structure to pull the fiber mat in the upward and downward directions, increase the structural strength, and then compressed after processing. The vertical needle-punched fiber holes are not directional when compressed and tightly packed, the hole structure disappears, leaving only the vertical fiber pulling structure, and the water permeability depends only on the small gaps of the fiber itself, with poor effect. The utility model discloses a kind of high-efficiency water-permeable and puncture-resistant insoles.
[0013] To solve the above problems, the utility model provides a kind of high-efficiency water-permeable and puncture-resistant insole.
[0014] The utility model discloses the following mode is realized: a kind of high-efficiency water-permeable and puncture-resistant insole, including insole 1 body, the insole 1 is made of fiber mat compression, vertical needle-punched fiber structure 2 is provided in the insole 1, vertical needle-punched fiber structure 2 is interval setting in the insole 1, oblique needle-punched fiber structure 3 is also interval setting in the insole 1, oblique needle-punched fiber structure 3 and insole 1 surface form angle α, 0 < α ≤ 4 °, oblique needle-punched fiber structure 3 forms inclined channel structure in the insole 1;Vertical needle-punched fiber structure 2 and oblique needle-punched fiber structure 3 intersect or do not intersect in the insole 1.
[0015] Further, the thickness of the insole 1 is 1.5mm~4mm.
[0016] Further, the material of the insole 1 is one of aramid 1414 and nylon 6 fiber.
[0017] Further, the insole 1 is impregnated with a reinforcing material, and the reinforcing material is polystyrene.
[0018] Further, on the same layer plane of the insole 1, the density of the vertical needled fiber structure 2 is 50-60 per square centimeter, and the density of the oblique needled fiber structure 3 is 60-70 per square centimeter.
[0019] Compared with the prior art, the utility model includes the vertical needled fiber structure of the prior art to ensure the pulling strength in the vertical direction, and further, the oblique needled fiber structure is further arranged, which further interweaves the fibers in different directions, increases the entanglement degree between the fibers, forms a more stable three-dimensional structure, and simultaneously, the oblique needled structure can form a channel beneficial to drainage and ventilation in the fibers. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 is the structure schematic view when the fiber felt is needled;
[0021] Figure 2 is the structure schematic view when the fiber felt is laid and pressed in multiple layers;
[0022] Figure 3 is the structure schematic view of the insole after processing.
[0023] Among them, the insole 1, the vertical needled fiber structure 2, the oblique needled fiber structure 3 and the fiber felt 4. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0025] In the utility model, unless otherwise explicitly specified and limited, the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0026] A method for preparing a high-efficiency water-permeable and puncture-resistant shoe pad, the method comprising:
[0027] S1, preparing a fiber material, and outputting the fiber material through a carding machine to form a fiber mat 4 with a thickness of 20-60 mm; preferably, the prepared fiber material includes at least one of aramid 1414 fibers and nylon 6 fibers.
[0028] Aramid 1414: It is a high-performance synthetic fiber with characteristics such as high strength, high modulus, high temperature resistance, and corrosion resistance. Its chemical name is poly-p-phenylene terephthalamide. It has excellent mechanical properties, including high strength and high modulus. High strength means it can withstand greater tension without easily breaking, providing a good basis for puncture resistance for shoe pads. High modulus indicates that it has relatively small deformation under stress, maintaining the stability of the shoe pad structure and ensuring that the shoe pad does not deform excessively under pressure, effectively protecting the feet. In addition, it also has the characteristics of high temperature resistance and corrosion resistance, allowing it to maintain stable performance in various complex environments, such as not decreasing in strength due to temperature rise in high temperature environments, and not easily corroded when contacting chemicals in sweat, thereby prolonging the service life of the shoe pad.
[0029] Nylon 6 series: It has flexibility and wear resistance, which can increase the comfort and durability of the shoe pad. It is a type of polyamide fiber that contains amide bonds in its molecular chain. This makes nylon 6 series fibers have good wear resistance, and even if the shoe pad is frequently rubbed by the feet during daily use, it can still maintain good performance. At the same time, it also has flexibility, which allows the shoe pad to better conform to the shape of the foot, making it more comfortable to wear. Moreover, it can also provide a certain degree of strength to help the shoe pad withstand the pressure of the feet.
[0030] Depending on different usage requirements, one type of fiber can be used alone or in combination.
[0031] S2, as shown in the accompanying Figure 1 illustration, passing the fiber mat 4 through a needle punching machine, and the needles of the needle punching machine are vertically inserted into the fiber layer of the fiber mat 4; preferably, the needle punching depth is 5-7 mm, and the needle punching density is 50-60 needles per square centimeter.
[0032] Non-woven fabric needle punching machine: It is a device used to manufacture non-woven fabric. Non-woven fabric is a type of non-woven cloth made from oriented or random fibers through friction, cohesion, or bonding methods. Vertical needle punching: When using a non-woven fabric needle punching machine, vertical needle punching refers to the direction in which the needles are inserted perpendicular to the fiber layer. This needle punching method allows the fibers to interweave in the vertical direction, making the fiber layer initially compact, laying the foundation for subsequent processing and the strength of the shoe pad
[0033] S3, passing the fiber mat 4 through a needle punching machine, the needles of the needle punching machine are inserted into the fiber layers of the fiber mat 4 at an angle relative to the fiber mat 4; preferably, the insertion direction of the needles forms an angle of 50-70 degrees, preferably 60 degrees, with the surface of the fiber mat 4, the needle punching depth is 5-7 mm, and the needle punching density is 60-70 needles per square centimeter.
[0034] These parameters determine the way fibers are intertwined and the internal structure formed, directly affecting the strength, breathability, and drainage performance of the insole. For example, the specific combination of needle punching depth, density, angle, and other factors is optimized through experiments.
[0035] S4, as shown in the accompanying Figure 2 The fiber mat 4 after needle punching is laid in multiple layers, and the multi-layer laid fiber mat 4 is pressed and formed by a press machine; preferably, the multi-layer laying is 2-6 layers, the press machine pressure is set to 8-10 megapascals, the pressing time is 15-20 minutes, the thickness of the pressed and formed fiber mat 4 is 1.5-4 mm, and preferably it is pressed from 150 mm total thickness to 2 mm. A professional press machine is used to press and form the multi-layer material. The material is placed in the mold of the press machine, a certain pressure is applied to make the material tightly combined, and the press machine should have enough pressure and precision to apply pressure uniformly. During the laying process, the flatness and alignment of each layer of material should be ensured to avoid misalignment or wrinkles. These parameters are the key parameters of this process. They not only relate to the thickness and weight of the insole, but also affect the strength and comfort of the insole.
[0036] S5, preparing a polystyrene solution, and immersing the pressed and formed fiber mat 4 in the polystyrene solution; preferably, the polystyrene solution concentration is 15%-18%, the temperature is 55-60 degrees Celsius, and the soaking time is 45-60 minutes. These parameters determine the penetration degree and reinforcement effect of polystyrene in the insole.
[0037] The impregnation process is a processing method that penetrates liquid material, which is polystyrene solution in this patent, into the internal structure of solid material, the fiber structure of the insole. In this process, the insole is soaked in the polystyrene solution, and the solution will gradually fill the gaps between the fibers under the influence of factors such as capillary action. After drying and other subsequent treatments, polystyrene will form a reinforcing phase inside the insole, uniformly distributed between the fibers, further strengthening the structure of the insole, just like filling reinforcing materials in the frame structure of a building.
[0038] Polystyrene is a common thermoplastic. In this patent, it is mainly used to increase the strength of the insole. The close arrangement of polystyrene molecular chains gives it high strength and hardness. When combined with fiber materials, it can fill the gaps between fibers, strengthen the connection between fibers, and tightly bond the fibers together like "glue", thereby improving the overall strength and puncture resistance of the insole.
[0039] S6. Remove the fiber mat 4 from the polystyrene solution and dry it to solidify the polystyrene solution in the fiber mat 4. Preferably, the drying method is hot air drying or infrared drying, the drying temperature is 85-95 degrees Celsius, and the drying time is 2.5-3 hours.
[0040] S7. The dried fiber mat 4 is ironed by a high-temperature ironing machine; preferably, the ironing temperature of the high-temperature ironing machine is 180-190 degrees Celsius, and the ironing time is 1.5-2 minutes. These process parameters can ensure the appearance quality, size accuracy and overall performance of the insole.
[0041] S8. The fiber mat 4 is shaped into an insole 1 by a mold.
[0042] An insole prepared by the above preparation method, comprising an insole 1 body, the insole 1 is pressed from a fiber mat, the insole 1 is provided with a vertical needle-punched fiber structure 2 perpendicular to the surface of the insole 1, the vertical needle-punched fiber structure 2 is arranged at intervals in the insole 1, the insole 1 is also provided with an inclined needle-punched fiber structure 3, the inclined needle-punched fiber structure 3 forms an angle α with the surface of the insole 1, 0 < α ≤ 4°, the inclined needle-punched fiber structure 3 forms an inclined channel structure in the insole 1; the vertical needle-punched fiber structure 2 and the inclined needle-punched fiber structure 3 intersect or do not intersect in the insole 1, the structure strength is higher when the vertical needle-punched fiber structure 2 intersects with the inclined needle-punched fiber structure 3, according to the above preparation method, the density of the vertical needle-punched fiber structure 2 is 50-60 per square centimeter, and the density of the inclined needle-punched fiber structure 3 is 60-70 per square centimeter on the same plane of the insole 1.
[0043] Structurally:
[0044] 1. Cotton felt-like structure: The insole 1 has a structure similar to cotton felt, which brings softness, comfort and good air permeability, which are important characteristics of the product.
[0045] 2. Sponge-like drainage structure: The sponge-like drainage structure is the key to the high-efficiency water permeability of the insole 1. This includes the formation of internal micro-pores, the connectivity between the pores, etc.
[0046] Puncture resistance: In addition to the combination of fibers and polystyrene mentioned in the above utility model for improving puncture resistance, the existing technology is also exploring other materials and structures to achieve better puncture resistance. For example, using a multi-layer composite material structure, combining high-strength fibers with materials such as metal sheets, or adding special anti-puncture coatings to insoles. These technologies have certain applications in military, industrial protective shoes, etc. But the cost is relatively high, and the promotion in the market of ordinary insoles for civilian use is limited.
[0047] Water permeability: In terms of water permeability, the market commonly uses physical methods such as punching and grooving to increase the water permeability of insoles, but this method can easily affect the overall strength and service life of the insole. There are relatively few products that use similar sponge-like drainage structures to achieve high-efficiency water permeability in the utility model. Some high-end sports insole brands may use similar principles to manufacture insoles with good water permeability through special fiber weaving or foaming processes, but the popularity and cost-effectiveness need to be improved.
[0048] I. Practical application in sports field
[0049] 1. Sports insoles: In sports shoes, this high-efficiency water-permeable and puncture-resistant insole can greatly improve the experience of athletes. For example, in basketball, athletes frequently jump, stop and turn, and their feet will produce a lot of sweat. The high-efficiency water permeability of this insole can quickly drain sweat, keeping the feet dry and reducing the discomfort and risk of slipping caused by wet feet. At the same time, players in basketball may accidentally step on other players' feet or sharp objects on the court, and the puncture-resistant function can effectively protect the feet from injury. In football, tennis, running and other sports, this insole can also have the same advantages, improving the comfort and safety of sports.
[0050] 2. Sports equipment expansion: In addition to the insole itself, this technology can also be applied to sports protective gear. For example, in football shin guards, similar material combinations and structural designs are used to provide better puncture resistance and breathability, providing more comprehensive protection for athletes.
[0051] II. Practical application in outdoor field
[0052] 1. Outdoor sports insoles: For hiking, mountaineering and other outdoor activities, this insole is an ideal choice. During long periods of hiking, feet tend to sweat, and the outdoor environment is complex, with thorns, stones and other sharp objects. The water permeability and puncture resistance of this insole can handle these situations well, ensuring the comfort and safety of the feet. In hiking shoes, the insole can also adapt to different terrains and pressures, providing good support for the feet.
[0053] 2. Outdoor equipment expansion: This technology can be applied to the shoe parts of outdoor tents. Some high-end tents have a separate "shoe compartment" in this area, which is made of this material with puncture resistance and water permeability, preventing users from being injured by sharp objects on the ground when entering and exiting the tent, while keeping the inside of the shoe compartment dry.
[0054] III. Practical applications in the field of work protection
[0055] 1. Work shoe insole: In workplaces such as construction sites and factories, employees need to stand or walk for a long time and may come into contact with various sharp tools and objects. This insole can be applied to work shoes to provide employees with a comfortable wearing experience and reliable puncture protection. For example, on a construction site, if a worker accidentally steps on a nail or other sharp object, the insole can effectively prevent foot injuries. At the same time, the efficient water permeability can keep the feet dry even after a long time of work.
[0056] 2. Work equipment expansion: In some work scenarios that require hand protection, such as gardening, gloves can draw on the materials and structures of the insole. Similar material combinations are used in the palm and finger parts of the gloves to enhance the puncture resistance of the gloves, while a special knitting structure design allows the gloves to have good air permeability to prevent excessive sweating of the hands.
[0057] IV. Potential applications in the military field
[0058] 1. Military boot insole: In military operations, the health and safety of soldiers' feet are of great importance. This insole can be applied to military boots to adapt to various complex terrains and combat environments. In situations such as field marches and combat drills, the efficient water permeability can keep soldiers' feet dry, reducing the decline in combat effectiveness caused by foot problems. The puncture-resistant function can resist sharp objects such as bamboo sticks and metal fragments that may be encountered on the battlefield, protecting the safety of soldiers' feet.
[0059] 2. Military equipment expansion: The bottom of the military backpack or the contact part of the bearing system can be made of similar materials to prevent sharp objects from piercing the bottom of the backpack, while having good air permeability to extend the service life of the equipment.
[0060] V. Potential applications in the field of medical rehabilitation
[0061] 1. Rehabilitation shoe insole: For patients with foot injuries or foot diseases such as diabetic foot, the puncture-resistant function of this insole can prevent the condition from worsening due to accidental puncture. At the same time, the water permeability helps to keep the feet clean and dry, which is beneficial to wound healing. Using this insole in rehabilitation shoes can provide a comfortable rehabilitation environment for patients.
[0062] 2. Medical equipment expansion: In some medical equipment, such as the foot support part of the leg rehabilitation trainer, the use of this material can make the patient feel more comfortable when using the equipment, and prevent the equipment from causing damage to the feet.
[0063] The above only describes the preferred embodiments of the present application, and it should be pointed out that for those skilled in the art, without departing from the overall concept of the present application, some changes and improvements can be made, which should also be considered as the protection range of the present application.
Claims
1. A highly permeable and puncture-resistant insole, comprising an insole (1) body, wherein the insole (1) is formed by pressing fiber felt, and wherein the insole (1) is provided with vertically needled fiber structures (2) perpendicular to the surface of the insole (1), the vertically needled fiber structures (2) being spaced apart within the insole (1), characterized in that: The insole (1) is further provided with a slanting needled fiber structure (3) at intervals, the slanting needled fiber structure (3) forms an angle α with the surface of the insole (1), 0 < α ≤ 4°, the slanting needled fiber structure (3) forms an inclined channel structure in the insole (1); the vertical needled fiber structure (2) intersects or does not intersect with the slanting needled fiber structure (3) in the insole (1).
2. The high water permeable and puncture resistant insole according to claim 1, wherein: The thickness of the insole (1) is 1.5mm-4mm.
3. The high water permeable and puncture resistant insole of claim 1, wherein: The material of the insole (1) is one of aramid 1414 and nylon 6 fiber.
4. The high water permeable and puncture resistant insole as claimed in claim 1, wherein: The insole (1) is impregnated with a reinforcing material, and the reinforcing material is polystyrene.
5. The high water permeable and puncture resistant insole as claimed in claim 1, wherein: On the same layer plane of the insole (1), the density of the vertical needled fiber structure (2) is 50-60 per square centimeter, and the density of the slanting needled fiber structure (3) is 60-70 per square centimeter.