Lightweight foamed support upper

Abstract

The utility model relates to the technical field of vamp, concretely relates to a light weight foaming support vamp, including vamp body and the integrated mould with the vamp body and be located human body heel position's entrance, the vamp body side and the palm position on sewing fixed with the support surface layer that is by high strength yarn through low density weaves and forms by weaves, a plurality of support sheets are fixed on the support surface layer through hot-pressing.

Description

Technical Field

[0001] This utility model relates to the field of shoe upper technology, specifically to a lightweight foam support shoe upper. Background Technology

[0002] Shoes are a type of clothing accessory whose function is to protect and cover the user's feet. They are basically composed of a sole and an upper. The sole is the lower part that contacts the ground, while the upper is the upper part that is located on top of the sole. The upper covers the user's foot and connects with the sole to fix the sole to the user's foot, preventing the sole from falling off. The design of the upper can effectively improve the integration of the shoe and foot, and make the shoe more protective of the foot and provide better warmth.

[0003] While the aforementioned existing technologies can solve the corresponding technical problems, they still have certain drawbacks: In order to achieve a higher support effect and make the upper three-dimensional and not collapse, existing shoe uppers often use higher density yarns and TPU film for heat pressing and shaping. However, this often leads to a significant increase in the hardness of the upper. In reinforced areas, the high hardness can cause difficulty in bending and foot pinching. It also significantly increases the weight of the upper, resulting in poor lightweighting. At the same time, the high density yarns and TPU film make it difficult for air to pass through the upper, which greatly reduces the overall breathability of the upper and seriously reduces the comfort of wearing it. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a lightweight foam support upper that offers good support and is lightweight.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a lightweight foam support upper, comprising an upper body and an integrally formed entry point located at the heel of the human foot. A support surface layer woven from high-strength yarn using a low-density weaving method is sewn and fixed to the side and forefoot of the upper body. Several support pieces are fixed to the support surface layer by heat pressing.

[0006] A further improvement is that a heel reinforcement film is fixed to the heel of the foot via heat pressing, and a heel stabilizing piece is also bonded to the heel reinforcement film.

[0007] A further improvement is that a forefoot reinforcement film is fixed to the forefoot edge of the shoe upper body by heat pressing, and a suede layer is sewn onto the forefoot reinforcement film.

[0008] A further improvement is that a reinforcing membrane for the insertion opening is also fixed to the edge of the shoe upper body by heat pressing.

[0009] A further improvement is that the shoe upper body has side reinforcement layers on both sides, which are formed by high-density yarn using a high-density weaving method.

[0010] A further improvement is that the support sheet is a sheet-like structure formed by foaming polymer particles.

[0011] A further improvement is that the upper surface of the support plate has several corrugated deformation grooves.

[0012] After adopting the above technical solution, the beneficial effects of this utility model are as follows: During the wearing process, the support layer woven from high-strength yarn using a low-density weaving method prevents the shoe upper from collapsing. Simultaneously, a large number of support sheets are adhered and fixed to the support layer. These support sheets are sheet-like structures formed by foaming polymer particles, possessing a certain strength. There are gaps between multiple support sheets, and the foamed support sheets contain numerous pores, making them lightweight. Thus, while achieving lightweighting, their own strength supports the support layer from collapsing and resists pressure applied to the support layer, preventing excessive deformation. Furthermore, when external force acts on the support sheets, the pores within them allow for compression and disperse the impact force. Therefore, when the foot is hit by outdoor gravel or other objects, pressure is effectively reduced, protecting the foot. This results in a shoe upper that is both highly protective and lightweight. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a top view of the structure of the shoe upper of this utility model after it has been unfolded; Figure 2 This is a three-dimensional structural diagram of the support sheet of this utility model. Detailed Implementation

[0015] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0016] See Figure 1-2As shown, the technical solution adopted in this specific embodiment is: a lightweight foamed support upper, including an upper body 1 and an integrally formed insertion port 2 located at the heel of the human foot. A support layer 5, woven from high-strength yarn using a low-density weaving method, is sewn and fixed to the sides and forefoot of the upper body 1. Several support sheets 6 are fixed to the support layer 5 by hot pressing. The support sheets 6 are sheet-like structures formed by foaming high-molecular particles. During molding, the fabric used for the upper body 1 is first woven from yarn, then the fabric is cut to form the shape of the upper body 1. The insertion port 2 is then cut into the upper body 1, followed by the molding of the support layer 5. The support layer 5 is woven from high-density yarn using a low-density weaving method, resulting in high porosity and low hardness. Specifically, the gap between the warp and weft yarns is significantly larger than the yarn diameter, for example, the gap width is between 0.5mm and 2.0mm. This belongs to the field of technology. Technicians can make conventional selections based on the required balance between support and breathability. High-density yarn provides excellent support, and a fixed support layer 5 is sewn onto both sides of the upper body 1 and the forefoot area. The high-density yarn of the support layer 5 supports the upper body 1, preventing collapse. Subsequently, the support piece 6 is foamed using polymer particles, preferably ethylene-vinyl acetate copolymer or thermoplastic polyurethane particles. The apparent density of the foamed support piece is between 0.15 g / cm³ and 0.35 g / cm³, a density range that effectively balances lightweighting and structural strength. These particles are then cut into small blocks of support piece 6, and multiple support pieces 6 are adhered to the support layer 5 using an adhesive. Typical parameters for this fixing process are: temperature 160℃±10℃, pressure 0.3MPa to 0.8MPa, and hot-pressing time 15 to 30 seconds. The adhesive used can be a polyurethane hot melt adhesive.This process ensures that the support sheet 6 is firmly bonded to the support surface layer 5 without damaging its foam structure. Preferably, a large number of support sheets 6 are adhered to the side of the support surface layer 5 on the upper body 1, while a small number of support sheets 6 are adhered to the forefoot position of the support surface layer 5 on the upper body 1. The molded upper can then be sewn into the midsole of the shoe. The shoelaces are inserted through the opening 2, and the foot is then put into the shoe through the opening 2. During wear, the support surface layer 5, woven with high-strength yarn using a low-density weaving method, prevents the upper body 1 from collapsing. Simultaneously, a large number of support sheets 6, formed from high-polymer particle foam, are adhered and fixed to the support surface layer 5. The sheet-like structure has a certain strength, and there are gaps between multiple support sheets 6. The foamed support sheets 6 have a large number of pores inside, making them lightweight. Thus, while achieving lightweighting, they support the support surface layer 5 without collapsing through their own strength, and can resist the pressure applied to the support surface layer 6. This holds the support surface layer 6 in place so that it does not deform excessively. When external force is applied to the support sheet 6, the pores inside the support sheet 6 can support the compression of the support sheet 6 under pressure and disperse the impact force. Therefore, when the foot is hit by outdoor gravel, etc., it can fully decompress and protect the foot, thus making the shoe upper achieve the effect of good protection and lightweighting. The upper body 1 is located at the heel of the human foot and is also fixed with a heel reinforcement film 3 by heat pressing. A heel stabilizing piece 4 is also glued and fixed on the heel reinforcement film 3. This makes the heel position of the upper body 1 stronger and less prone to deformation by combining the heel reinforcement film 3 with the heel stabilizing piece 4. This can better lock the heel of the foot and prevent lateral swing during exercise, thus reducing the risk of sports injuries. A forefoot reinforcement film 9 is fixed to the forefoot edge of the upper body 1 by heat pressing. A suede layer 10 is sewn onto the forefoot reinforcement film 9. This helps to improve the strength of the upper body 1 at the position of the upper body 1 through the forefoot reinforcement film 9, preventing cracking. At the same time, the suede layer 10 improves abrasion resistance. When the upper body 1 comes into direct contact with rough surfaces such as the ground during outdoor sports, the upper body 1 is less likely to be damaged, thus extending the service life of the upper. The upper body 1 is also fixed with a reinforcing membrane 8 at the edge of the insertion opening 2 by heat pressing, which helps to improve the strength of the upper body 1 around the insertion opening 2 and prevents it from cracking after being tightened by the shoelaces. The shoe upper body 1 is also provided with side reinforcement layers 7 on both sides. The side reinforcement layers 7 are formed by high-density yarn and high-density weaving method, which helps to improve the strength of the sides of the shoe upper body 1. In this way, the side reinforcement layers 7 can prevent the sides of the shoe upper body 1 from deforming excessively when the foot moves laterally, thus further improving the safety during exercise. The upper surface of the support piece 6 has several corrugated deformation grooves 62. Since the support piece 6 is a low-density foam and has deformation grooves 62 on its surface, when subjected to external impact, the groove structure can guide the stress distribution and preferentially undergo elastic deformation. At the same time, the pore structure in the foam can cooperate to compress, thereby efficiently absorbing and dispersing the impact energy. This makes it easier for the support piece 6 to deform through the deformation grooves 62. As a result, when the foot is hit by outdoor gravel, etc., the pressure can be fully reduced, protecting the foot. This makes the shoe upper achieve the effect of good protection and lightweight.

[0017] To verify the actual technical effect of the lightweight foam support upper described in this utility model, the following comparative experiment was conducted.

[0018] 1. Sample preparation for testing: Example Group: Shoe upper samples were prepared according to the specific embodiments of this utility model. The support layer is made of high-strength polyester yarn, woven with a low-density weave of approximately 1.0 mm between warp and weft yarns. The support sheet is made of ethylene-vinyl acetate copolymer (EVA) foamed to a density of 0.25 g / cm³, and fixed to a specific position on the support layer by hot pressing (temperature 170℃, pressure 0.5MPa, time 20 seconds).

[0019] Comparison Group 1 (Traditional TPU Reinforced Upper): The upper body uses the same substrate, and a whole piece of thermoplastic polyurethane (TPU) film is heat-pressed and laminated on the sides and forefoot for reinforcement.

[0020] Comparison Group 2 (Traditional High-Density Woven Upper): High-strength fabric with high-density weaving (warp and weft yarn gap <0.3mm) is used directly as the main body of the upper, without a separate foam support piece.

[0021] 2. Test methods and results: The following performance tests were conducted on the three groups of samples, and the results were taken as the average of the three tests, which are summarized in Table 1.

[0022] Table 1: Comparative Test Results of Lightweight Foam Support Upper Performance

[0023] 3. Results Analysis: Lightweighting: The weight per unit area of ​​the example group was significantly lower than that of the two control groups (approximately 30.5% and 25% lighter, respectively), mainly due to the use of low-density woven structure and lightweight foam support sheet, which achieved effective weight reduction.

[0024] Balance between support and flexibility: The static support stiffness of the example group is between that of the control group 1 (too stiff) and the control group 2 (too soft), indicating that it provides sufficient structural support to prevent the upper from collapsing, while avoiding the bending and foot-clamping problems caused by too stiff materials, thus achieving a good balance between support and wearing comfort.

[0025] Impact resistance: The example group showed the highest impact attenuation rate (up to 35%), significantly better than traditional TPU films and high-density woven structures. This confirms that the porous structure inside the foam support sheet and its surface deformation grooves can effectively compress and deform upon impact, thereby dispersing and absorbing energy and providing better protection for the feet.

[0026] Breathability: The breathability of the example group was much higher than that of the two control groups, mainly due to the low-density woven support layer and the high-porosity foam support sheet structure, which together formed a good air circulation channel and effectively solved the problem of poor breathability mentioned in the background art.

[0027] Conclusion: The above experimental data fully demonstrate that the lightweight foam support upper provided by this utility model, through the synergistic combination design of "low-density woven support surface layer" and "lightweight foam support sheet", comprehensively achieves significant lightweight, excellent impact protection and good breathability while ensuring sufficient structural support, effectively overcoming the technical problem of difficulty in balancing support, weight and breathability in the prior art.

[0028] The working principle of this utility model is as follows: First, the fabric used for the upper body 1 is woven from yarn. Then, the fabric is cut to form the shape of the upper body 1. Next, an opening 2 is cut into the upper body 1. Then, a support layer 5 is formed. The support layer 5 is woven from high-density yarn using a low-density weaving method, resulting in high porosity and low hardness. Simultaneously, the high-density yarn provides excellent support. The support layer 5 is sewn and fixed onto both sides and the forefoot area of ​​the upper body 1, allowing the high-density yarn of the support layer 5 to support the upper body 1 and prevent collapse. Then, the material used for the support pieces 6 is foamed from polymer particles and cut into small pieces. Multiple support pieces 6 are adhered to the support layer 5 using adhesive. Preferably, a large number of support pieces 6 are adhered to the sides of the support layer 5 located on the upper body 1, while a small number of support pieces 6 are adhered to the forefoot area of ​​the support layer 5. Finally, the formed upper is sewn into the shoe. The midsole is fitted with laces at the front of the entry point 2, through which the foot is inserted into the shoe. During wear, a support layer 5, woven from high-strength yarn using a low-density weaving method, prevents the upper body 1 from collapsing. Numerous support sheets 6 are adhered and fixed to the support layer 5. These support sheets 6 are sheet-like structures formed by high-molecular-weight foaming, possessing a certain strength. There are gaps between multiple support sheets 6, and the foamed support sheets 6 contain numerous pores, making them lightweight. Thus, while achieving lightweight design, their own strength supports the support layer 5, preventing it from collapsing and resisting pressure applied to it. This holds the support layer 6 in place, preventing excessive deformation. When external force is applied to the support sheets 6, the pores within them allow for compression and distribute the impact force. Therefore, when the foot is hit by outdoor gravel or other objects, the pressure is effectively reduced, protecting the foot. This results in a shoe upper that is both protective and lightweight.

[0029] This utility model aims to protect the structure of the product. The model numbers of the components are not the focus of this utility model's protection, as they are common technology. Any component on the market that can achieve the functions described above can be used as an option. Therefore, the model numbers and other parameters of the components are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the various components.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A lightweight foam support upper, comprising an upper body (1) and an opening (2) integrally formed with the upper body (1) at the heel of the human foot, characterized in that: The upper body (1) has a support surface layer (5) made of high-strength yarn woven by low-density weaving on the side and forefoot. Several support pieces (6) are fixed on the support surface layer (5) by hot pressing.

2. The lightweight foam support upper according to claim 1, characterized in that: The upper body (1) is located on the heel of the human foot and is also fixed with a heel reinforcement film (3) by hot pressing. A heel stabilizing piece (4) is also bonded and fixed on the heel reinforcement film (3).

3. The lightweight foam support upper according to claim 1, characterized in that: The forefoot reinforcement film (9) is fixed to the forefoot edge of the upper body (1) by heat pressing, and a suede layer (10) is sewn onto the forefoot reinforcement film (9).

4. The lightweight foam support upper according to claim 1, characterized in that: The upper body (1) is also fixed with a reinforcing membrane (8) at the edge of the inlet (2) by heat pressing.

5. The lightweight foam support upper according to claim 1, characterized in that: The shoe upper body (1) is also provided with side reinforcement layers (7) on both sides of the edge, and the side reinforcement layers (7) are formed by high-density yarn and high-density weaving method.

6. The lightweight foam support upper according to claim 1, characterized in that: The support sheet (6) is a sheet structure formed by foaming polymer particles.

7. A lightweight foam support upper according to claim 1 or 6, characterized in that: The upper surface of the support piece (6) has several corrugated deformation grooves (62).

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