Dual-density supercritical foaming sole

Abstract

The utility model relates to the related field of shoe soles, in particular to a dual-density supercritical foaming shoe sole which comprises a shoe sole body, an outer layer, an interlayer and the like. The density of the outer layer and the density of the interlayer are different, the outer layer is low in density, the buffering performance and the abrasion resistance are improved, the high-density inner layer provides supporting, low-density materials of the outer layer are large in proportion but light in weight, and high-density materials of the inner layer are concentrated in a core supporting area, so that the whole sole is lighter than a full-high-density structure, and the service life of the sole is prolonged. And compared with a full-low-density structure, the sole has better supporting performance, the advantages of light weight and high performance are achieved, and the using effect of the sole is improved.

Description

Technical Field

[0001] This utility model relates to the field of shoe soles, and in particular to a dual-density supercritical foam shoe sole. Background Technology

[0002] Supercritical foaming is a physical foaming molding technology that uses supercritical carbon dioxide or nitrogen instead of organic foaming agents to foam under specific pressure and temperature. It is widely used in the field of shoe soles, and soles made from supercritical materials are popular due to their lightweight, flexibility, and high comfort. However, most existing supercritical foam soles are integrally molded with the same density in both the inner and outer layers. This single density makes it difficult to simultaneously meet the needs of cushioning and support. Furthermore, choosing a lighter overall material can easily sacrifice the sole's support, while choosing a heavier overall material can easily sacrifice its lightweight properties. This makes it difficult to achieve both lightweight and high performance in the sole, thus reducing its overall usability. Summary of the Invention

[0003] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides a dual-density supercritical foamed shoe sole to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a dual-density supercritical foamed shoe sole, comprising a shoe sole, wherein the shoe sole is integrally formed from an outer layer and an interlayer made of the same material, and the outer layer completely wraps the interlayer, so that the interlayer is firmly embedded in the interior of the outer layer, thereby realizing that the outer layer and the interlayer form a continuous integral structure, and the density of the outer layer is less than the density of the interlayer.

[0005] Preferably, the density of the outer layer is 0.06 g / cm³. 3 ~0.15g / cm 3 The interlayer density is 0.08 g / cm³. 3 ~0.20g / cm 3 .

[0006] Preferably, both the outer layer and the interlayer are supercritical physical foaming materials.

[0007] Preferably, the outer layer and the interlayer are made of any one of TPU, TPEE, or nylon elastomer.

[0008] Preferably, the thickness of the interlayer is one-quarter to one-third of the overall thickness of the sole.

[0009] Preferably, the bottom surface of the sole is provided with anti-slip patterns, which include two rows of first anti-slip stripes on the bottom of the sole, a second anti-slip stripe and a third anti-slip stripe on the bottom of the sole and located between the two rows of first anti-slip stripes, the third anti-slip stripe having a conical structure, and the outer sides of the two rows of first anti-slip stripes extending obliquely backward and upward to the side surface of the sole.

[0010] The beneficial effects of this utility model are:

[0011] This invention features an outer layer and a middle layer with different densities. The low-density outer layer enhances cushioning and abrasion resistance, while the high-density inner layer provides support. The outer layer has a large proportion of low-density material but is lightweight, while the inner layer has high-density material concentrated in the core support area. This makes the sole lighter than a fully high-density structure and more supportive than a fully low-density structure, achieving the advantages of both lightweight and high performance, thus improving the overall performance of the sole. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the supercritical foamed shoe sole of this utility model;

[0013] Figure 2 This is a schematic diagram of the bottom structure of the supercritical foamed shoe sole of this utility model;

[0014] Figure 3 This is a side view vertical cross-sectional structural diagram of the sole of the shoe according to this utility model;

[0015] Figure 4 This is a rear view vertical cross-sectional structural diagram of the sole of the present invention.

[0016] Among them: sole-1, outer layer-2, interlayer-3, anti-slip pattern-4, first anti-slip stripe-41, second anti-slip stripe-42, third anti-slip stripe-43. Detailed Implementation

[0017] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0018] like Figures 1 to 4 As shown, this utility model provides a dual-density supercritical foamed shoe sole, including a sole 1. The upper surface of the sole 1 is smooth. The sole 1 is integrally molded from the same material, consisting of an outer layer 2 and an interlayer 3. The outer layer 2 completely encloses the interlayer 3, so that the interlayer 3 is firmly embedded inside the outer layer 2, achieving a continuous integral structure between the outer layer 2 and the interlayer 3. This ensures a seamless connection between the outer layer 2 and the interlayer 3, enhancing the stability and durability of the sole 1. The density of the outer layer 2 is 0.02 g / cm³ less than the density of the interlayer 3. 3 ~0.03g / cm 3 ;

[0019] It should be noted that the number of interlayers 3 inside the outer layer 2 can be adjusted. In this embodiment, the number of interlayers 3 is one, but more interlayers can be set according to actual needs, which will not be elaborated here.

[0020] In this embodiment, the bottom surface of the sole is provided with anti-slip pattern 4. The anti-slip pattern 4 includes two rows of first anti-slip stripes 41 respectively provided at the left and right ends of the bottom of the sole 1, a second anti-slip stripe 42 and a third anti-slip stripe 43 provided at the bottom of the sole 1 and located between the two rows of first anti-slip stripes 41. The two rows of first anti-slip stripes 41 are symmetrically arranged. The second anti-slip stripe 42 is strip-shaped and extends along the length direction of the middle of the bottom surface of the sole 1. The third anti-slip stripe 43 is a tapered structure that gradually narrows from back to front, and the third anti-slip stripe 43 is located at the front end of the second anti-slip stripe 42. The outer sides of the two rows of first anti-slip stripes 41 extend obliquely backward and upward to the side surface of the sole 1.

[0021] The first anti-slip stripe 41, the second anti-slip stripe 42, and the third anti-slip stripe 43 are all integrally formed with the sole 1;

[0022] When in use, the first anti-slip stripe 41 provides targeted grip to the outer side of the foot, helping to generate force and stabilize body posture. When the first anti-slip stripe 41 extends to the outsole 1, it can provide protection for the side of the outsole 1, forming a wear-resistant layer and reducing wear on the side surface of the outsole 1. The second anti-slip stripe 42 enhances lateral grip and prevents lateral slippage. The third anti-slip stripe 43 has a conical structure. When the heel lands, the third anti-slip stripe 43 can increase initial stability due to its wide rear end. The front end of the third anti-slip stripe 43 is narrower, which can effectively concentrate the pressure when the forefoot pushes off the ground, enhancing the grip of the outsole 1.

[0023] In this embodiment, the density of outer layer 2 is 0.07 g / cm³. 3 The density of interlayer 3 is 0.10 g / cm³. 3 This allows the outer layer 2 and the interlayer 3 of the sole 1 to be well combined, taking into account the advantages of tear resistance and providing stable support;

[0024] In this embodiment, both the outer layer 2 and the interlayer 3 are supercritical physical foaming materials, both made of TPU material, which has excellent elasticity and good wear resistance.

[0025] In this embodiment, the thickness of the interlayer 3 is one-third of the overall thickness of the sole 1, so that the ratio of the outer layer 2 and the interlayer 3 is moderate, which makes it easy for the sole 1 to have both good tear resistance and support.

[0026] Specifically, when the sole 1 is integrally processed using supercritical foaming technology, its outer layer 2 has a lower density, which reduces the overall weight of the sole 1 while providing good cushioning and tear resistance. Meanwhile, the inner interlayer 3 has a higher density, which provides stable support for the sole 1 as a whole, thus improving the overall stability of the sole 1. This allows the sole 1 to combine the advantages of lightweight and high performance.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dual-density supercritical foamed shoe sole, characterized in that, Including the sole, the sole is made of the same material and the interlayer is molded in one piece, and the outer layer completely wraps the interlayer, so that the outer layer and the interlayer form a continuous whole structure; The density of the outer layer is less than that of the inner layer.

2. The dual-density supercritical foamed shoe sole according to claim 1, characterized in that: The density of the outer layer is 0.06 g / cm³. 3 ~0.15g / cm 3 The interlayer density is 0.08 g / cm³. 3 ~0.20g / cm 3 .

3. The dual-density supercritical foamed shoe sole according to claim 1, characterized in that: Both the outer layer and the interlayer are made of supercritical physical foaming materials.

4. The dual-density supercritical foamed shoe sole according to claim 3, characterized in that: The outer layer and the interlayer are made of any one of the following materials: TPU, TPEE, or nylon elastomer.

5. The dual-density supercritical foamed shoe sole according to claim 1, characterized in that: The thickness of the interlayer is one-quarter to one-third of the overall thickness of the sole.

6. The dual-density supercritical foamed shoe sole according to claim 1, characterized in that: The bottom surface of the sole is provided with anti-slip patterns, which include two rows of first anti-slip stripes on the bottom of the sole, a second anti-slip stripe on the bottom of the sole and located between the two rows of first anti-slip stripes, and a third anti-slip stripe. The third anti-slip stripe has a conical structure, and the outer sides of the two rows of first anti-slip stripes extend backward and upward to the side surface of the sole.

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