An integrally formed sole

Abstract

This application relates to the technical field of shoe soles, providing a one-piece molded shoe sole, comprising a first shock-absorbing part composed of foamed particles and a second shock-absorbing part composed of foamed sheets. The second shock-absorbing part is disposed on the peripheral sidewall and / or bottom of the first shock-absorbing part, and the first and second shock-absorbing parts are integrally molded by steam forming. When the second shock-absorbing part is disposed on the peripheral sidewall of the first shock-absorbing part, it provides elastic coverage to assist in the deformation tendency of the granular shock-absorbing part, while reducing excessive deformation of the granular shock-absorbing part, improving the shock-absorbing effect of the granular shock-absorbing part, and reducing particle peeling at the wrapped area, as well as reducing the difficulty in cleaning dirt between the particles in the wrapped area. When the second shock-absorbing part is disposed at the bottom of the first shock-absorbing part, the upper and lower layers use shock-absorbing parts with different physical states, and the combination of different shock-absorbing methods in the longitudinal direction improves the overall shock-absorbing effect.

Description

Technical Field

[0001] This application relates to the technical field of shoe soles, and in particular to a one-piece molded shoe sole. Background Technology

[0002] In the footwear manufacturing industry, sole performance has always been a key factor affecting shoe quality and wearing experience. As people's demands for comfort in sports and daily activities continue to increase, the shock absorption performance of soles is receiving more and more attention. Good shock absorption not only reduces the pressure on the feet during walking or exercise, reducing fatigue, but also lowers the risk of injury, providing a safer and more comfortable walking experience. In athletic shoe design, excellent shock-absorbing soles can help athletes perform better and improve athletic results. At the same time, for ordinary consumers, soles with good shock absorption performance can also make them feel more comfortable during daily walking. Currently, to achieve the shock absorption function of soles, "popcorn" soles are used; however, most existing popcorn soles are made of ETPU foam particles. Although ETPU foam particles have excellent performance, due to their granular distribution and dispersion, they rely solely on the adhesive bonding between particles. Under frequent stress, this granular sole structure is prone to excessive deformation, thus affecting the shock absorption performance of the sole, therefore requiring further improvement. Utility Model Content

[0003] To address the above problems, this application provides a one-piece molded shoe sole.

[0004] This application provides a one-piece molded shoe sole, which adopts the following technical solution:

[0005] A one-piece molded shoe sole includes a first shock-absorbing part composed of foamed particles and a second shock-absorbing part composed of foamed sheets. The second shock-absorbing part is disposed on the peripheral sidewall and / or bottom of the first shock-absorbing part. The first shock-absorbing part and the second shock-absorbing part are integrally molded by steam forming.

[0006] By adopting the above technical solution, when the second damping part is disposed on the peripheral wall of the first damping part, the sheet-like damping part located on the periphery of the granular part can assist in providing elastic wrapping on the side. The elastic wrapping can assist in matching the deformation trend of the granular damping part, while reducing excessive deformation of the granular damping part, improving the concentrated stress state of the granular damping part, improving the damping effect of the granular damping part, and reducing the peeling of particles at the wrapped part, as well as reducing the difficulty in cleaning the gaps between particles at the wrapped part.

[0007] When the second damping part is set at the bottom of the first damping part, the upper and lower layers use damping parts with different physical states. Based on the difference in granular and sheet-like shapes, the first and second damping parts form different damping forms. The combination of different damping methods in the longitudinal direction improves the overall damping effect. The second damping part shares the damping burden with the first damping part. Compared with the existing situation where only granular damping parts are used, the risk of the first damping part being directly and completely subjected to excessive deformation is reduced.

[0008] Since the first and second damping parts are directly integrally formed by steam forming, the forming process is simple.

[0009] Preferably, the second shock-absorbing part covers the peripheral sidewall of the heel portion of the first shock-absorbing part, and the two ends of the second shock-absorbing part are located on both sides of the heel portion of the first shock-absorbing part.

[0010] By adopting the above technical solution, the second shock-absorbing part is wrapped around the heel sidewall of the first shock-absorbing part to improve the wrapping effect. The heel is usually the main stress-bearing and shock-absorbing position of the shoe sole during sports. The second shock-absorbing part mainly focuses on providing shock absorption assistance to the heel according to the stress state of the shoe sole, thereby improving the shock absorption effect of the heel.

[0011] Preferably, the second shock-absorbing portion is located at both ends of the heel portion, extending from the heel portion to the ball of the foot to form a first extension portion, and the longitudinal height of the first extension portion decreases from the heel portion to the ball of the foot.

[0012] By adopting the above technical solution, the second shock-absorbing part extends from both ends of the heel towards the ball of the foot to form the first extension part. The longitudinal height of the first extension part decreases from the heel to the ball of the foot in order to transmit force and achieve a gradual and smooth transition from the heel to the ball of the foot, reducing the possibility of force transmission discontinuity, thereby improving the wearer's comfort and subsequent relatively stable user experience.

[0013] Preferably, the lower edge of the second shock absorber can cover the bottom of the first shock absorber.

[0014] By adopting the above technical solution and increasing the coverage area, the shock absorption effect of the granular shock absorber can be further improved, and the peeling of particles in the wrapped part can be reduced, as well as the difficulty in cleaning the gaps between particles in the wrapped part.

[0015] Preferably, the second damping part is annularly wrapped around the periphery of the first damping part.

[0016] By adopting the above technical solution, the second shock absorber surrounds and wraps around the first shock absorber, further reducing the particle peeling of the first shock absorber and also reducing the difficulty in cleaning the gaps between particles.

[0017] Preferably, the second shock absorber is disposed at the bottom of the first shock absorber.

[0018] Preferably, the first shock absorber is made of colored foam particles, and the first shock absorber can be seen through the second shock absorber.

[0019] By adopting the above technical solution, the first shock-absorbing part of the one-piece molded sole is made of colored foam particles and can be seen through the second shock-absorbing part. In relatively bright areas, light can pass through to see the visual effect brought by the colored foam particles, thereby further improving the aesthetics of the sole.

[0020] Preferably, the first shock absorber is composed of fluorescent foam particles, and the first shock absorber can be seen through the second shock absorber.

[0021] By adopting the above technical solution, the first shock-absorbing part can be made of fluorescent foam particles to enhance the appearance of the sole. Since the first shock-absorbing part can be seen through the second shock-absorbing part, the fluorescent foam particles can absorb ultraviolet rays and emit a fluorescent effect in a relatively dark environment, thereby improving the aesthetic effect of the sole at night.

[0022] Preferably, the first shock-absorbing part is ETPU foam particles, and the second shock-absorbing part is TPU supercritical foam sheet.

[0023] By adopting the above technical solution, ETPU foam granules are usually also foam granules made from supercritical TPU material. Since ETPU foam granules and supercritical TPU foam sheets are essentially made from the same material and process, they can be directly and effectively integrated through steam thermoforming. They have high compatibility and good adhesion between materials, requiring no additional gluing process or adhesive. Compared with the existing technology that uses glue to bond the second shock-absorbing part, this simplifies the manufacturing process, reduces adhesive peeling, and increases service life.

[0024] Preferably, a hot melt adhesive layer may also be provided between the first damping part and the second damping part.

[0025] By adopting the above technical solution, when different foaming materials are used between the first damping part and the second damping part, i.e., when the foaming particles and the foamed sheet are different foaming materials, such as ETPU foaming particles and other supercritical foamed sheets, a hot melt adhesive layer is provided between the first damping part and the second damping part. During the steam forming process, the hot melt adhesive layer can be heated to provide an adhesive effect, thereby improving the bonding effect between the foaming particles and the foamed sheet. The hot melt adhesive layer can be a hot melt adhesive film laminated to the bonding surface of the foamed sheet for bonding with the foaming particles, or a hot melt adhesive coated on the bonding surface of the foamed sheet for bonding with the foaming particles.

[0026] In summary, this application has the following beneficial effects:

[0027] 1. The sheet-like second damping part is located around the granular first damping part, which can help provide elastic wrapping support on the side, and in accordance with the deformation trend of the first damping part, reduce its excessive deformation, improve the concentrated force state and damping effect of the first damping part;

[0028] 2. When the second damping part is set at the bottom of the first damping part, the upper and lower layers use damping parts with different physical states. Based on the difference in morphology between granular and sheet-like, the first damping part and the second damping part form different damping forms. The combination of different damping methods in the longitudinal direction improves the overall damping effect.

[0029] 3. The second shock absorber is wrapped in a ring around the first shock absorber, which can reduce the peeling of particles from the first shock absorber and also reduce the difficulty of cleaning the gaps between particles. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application;

[0031] Figure 2 This is a schematic diagram of a partial cut-open structure of the heel in Embodiment 1 of this application;

[0032] Figure 3 This is a schematic diagram of the actual structure of the heel after it has been cut open in Embodiment 1 of this application;

[0033] Figure 4 This is a schematic diagram of the structure of the second extension in Embodiment 1 of this application;

[0034] Figure 5 This is a schematic diagram of the structure in Embodiment 2 of this application, where the second shock-absorbing part is arranged in a ring shape;

[0035] Figure 6 This is a schematic diagram of the structure in Embodiment 3 of this application, in which the second shock absorber is disposed at the bottom of the first shock absorber.

[0036] Explanation of reference numerals in the attached drawings: 1. First damping part; 2. Second damping part; 21. First extension part; 22. Second extension part. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1 -Appendix Figure 6 This application will be described in further detail below.

[0038] This application discloses a one-piece molded shoe sole.

[0039] Example 1:

[0040] A one-piece molded sole, as shown in the reference Figure 1 , Figure 2 The sole includes a first shock-absorbing part 1 composed of foamed particles and a second shock-absorbing part 2 composed of foamed sheets. The first shock-absorbing part 1 is specifically ETPU foamed particles, which act as a shock-absorbing pad. The second shock-absorbing part 2 is specifically TPU supercritical foamed sheets, which provide elastic coverage. The TPU supercritical foamed sheets can be obtained by cutting TPU supercritical foamed sheets along their thickness direction. It should be noted that since both ETPU foamed particles and TPU supercritical foamed sheets are essentially TPU materials, the first shock-absorbing part 1 and the second shock-absorbing part 2 can be directly integrally formed using steam molding. Specifically, before steam molding, the foamed sheet of the second shock-absorbing part is fixed in the molding cavity of the steam molding mold, and then the foamed particles of the first shock-absorbing part are filled into the molding cavity. Steam molding is then performed to obtain the integrally molded sole.

[0041] In this embodiment, the thickness of the second damping part 2 is 1 to 10 mm, and the specific thickness is set according to the requirements.

[0042] The second shock-absorbing part 2 is disposed on the peripheral sidewall and / or bottom of the first shock-absorbing part 1. In this embodiment, the second shock-absorbing part 2 is disposed on the peripheral sidewall of the first shock-absorbing part 1 located at the heel. Specifically, it can be disposed only on both sides of the heel, or it can cover the peripheral sidewall of the heel of the first shock-absorbing part 1. The latter is shown in the figure, and the corresponding physical diagram is as follows. Figure 3 As shown.

[0043] Furthermore, to reduce the possibility of abrupt breaks in the force transmission process as it transitions from the heel to the forefoot along the second shock-absorbing part 2, in this embodiment, the second shock-absorbing part 2 is located at both ends of the heel, extending from the heel to the forefoot to form a first extension 21. The longitudinal height of the first extension 21 decreases from the heel to the forefoot. This design allows the second shock-absorbing part 2 to provide appropriate support and shock absorption based on the force applied to different parts of the sole.

[0044] Reference Figure 4 Furthermore, to improve the coverage effect of the second shock-absorbing part 2 on the first shock-absorbing part 1, the lower edge of the second shock-absorbing part 2 can be extended to the bottom of the first shock-absorbing part 1 to form a second extension 22, covering the bottom of the first shock-absorbing part 1. This further enhances the overall stability and shock absorption effect of the sole, allowing the first shock-absorbing part 1 and the second shock-absorbing part 2 to work together better. It also reduces the peeling of particles from the covered area and minimizes the difficulty in cleaning the gaps between particles in the covered area.

[0045] The implementation principle of the one-piece molded shoe sole in this application embodiment is as follows: When the second shock-absorbing part 2 is disposed on the peripheral side wall of the first shock-absorbing part 1, the sheet-like shock-absorbing part located on the periphery of the granular part can assist in providing elastic wrapping on the side. The elastic wrapping can assist in matching the deformation trend of the granular shock-absorbing part, while reducing excessive deformation of the granular shock-absorbing part, improving the concentrated force state of the granular shock-absorbing part, improving the shock absorption effect of the granular shock-absorbing part, and reducing the peeling of particles at the wrapped part, as well as reducing the situation where the gaps between particles at the wrapped part are easy to get dirty and difficult to clean.

[0046] Example 2:

[0047] Reference Figure 5 The difference from Embodiment 1 is that in this embodiment, the second shock absorber 2 is wrapped around the periphery of the first shock absorber 1 in a ring shape. The second shock absorber 2 surrounds the first shock absorber 1, which further reduces the peeling of particles from the first shock absorber 1 and also reduces the difficulty of cleaning the gaps between particles.

[0048] It should be noted that the lower edge of the second shock absorber 2 can also extend to the bottom of the first shock absorber 1.

[0049] Example 3:

[0050] Reference Figure 6 The difference from Embodiment 1 is that in this embodiment, the second damping part 2 is disposed at the bottom of the first damping part 1. When the second damping part 2 is disposed at the bottom of the first damping part 1, the upper and lower layers use damping parts with different physical states. Based on the difference in morphology between granular and sheet-like, the first damping part 1 and the second damping part 2 form different damping forms. The combination of different damping methods in the longitudinal direction improves the overall damping effect.

[0051] It should be noted that this embodiment can be used together with embodiment 1 or embodiment 2, depending on the specific requirements.

[0052] Example 4:

[0053] The difference from Embodiment 1 is that the first shock-absorbing part 1 is composed of colored foam particles. In this embodiment, the thickness of the second shock-absorbing part 2 is 1-3 mm, which is relatively small. The second shock-absorbing part is white, and its small thickness allows for greater light transmission and visibility. The color difference between the colored foam particles in the first shock-absorbing part and the white color in the second shock-absorbing part is prominent, allowing the colored first shock-absorbing part 1 to be seen through the second shock-absorbing part 2. The second shock-absorbing part forms a fogged visible layer to enhance the color visual effect of the sole. In another embodiment, fluorescent foam particles can be used, which can achieve a unique visual effect in dark environments.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A one-piece molded shoe sole, characterized in that: It includes a first damping part (1) composed of foamed particles and a second damping part (2) composed of foamed sheets. The second damping part (2) is disposed on the peripheral sidewall and / or bottom of the first damping part (1). The first damping part (1) and the second damping part (2) are integrally formed by steam forming.

2. The one-piece molded shoe sole according to claim 1, characterized in that: The second shock absorber (2) covers the peripheral wall of the heel portion of the first shock absorber (1), and the two ends of the second shock absorber are located on both sides of the heel portion of the first shock absorber.

3. The one-piece molded shoe sole according to claim 2, characterized in that: The second shock absorber (2) is located at both ends of the heel of the first shock absorber (1), and extends from the heel to the toe to form the first extension (21). The longitudinal height of the first extension (21) decreases from the heel to the toe.

4. A one-piece molded shoe sole according to claim 2 or 3, characterized in that: The lower edge of the second shock absorber (2) can cover the bottom of the first shock absorber (1).

5. The one-piece molded shoe sole according to claim 1, characterized in that: The second shock absorber (2) is annularly wrapped around the periphery of the first shock absorber (1).

6. The one-piece molded shoe sole according to claim 1, characterized in that: The second shock absorber (2) is disposed at the bottom of the first shock absorber (1).

7. The one-piece molded shoe sole according to claim 1, characterized in that: The first shock absorber (1) is made of colored foam particles and can be seen through the second shock absorber (2).

8. The one-piece molded shoe sole according to claim 1, characterized in that: The first shock absorber (1) is made of fluorescent foam particles and can be seen through the second shock absorber (2).

9. The one-piece molded shoe sole according to claim 1, characterized in that: The first shock-absorbing part (1) is ETPU foam particles, and the second shock-absorbing part (2) is TPU supercritical foam sheet.

10. The one-piece molded shoe sole according to claim 1, characterized in that: A hot melt adhesive layer is provided between the first damping part and the second damping part.

Images