Multi-density one-step molded cross-linked foaming boots

Abstract

The utility model discloses a multi-density one-time forming cross-linked foaming boot, and relates to the technical field of shoes, the multi-density one-time forming cross-linked foaming boot comprises a boot sole, a boot vamp and a boot leg, the boot sole, the boot vamp and the boot leg are all made of EVA materials and are integrally formed in the same mold cavity in a cross-linked foaming mode, and the material density of the boot sole is higher than that of the boot vamp and that of the boot leg; a plurality of vertically-arranged supporting ribs are arranged on the inner wall of the boot leg. The method has the effect of improving the wearing comfort of the cross-linked foaming boots.

Description

Technical Field

[0001] The present application relates to the technical field of shoes, and in particular to a multi-density one-step molded cross-linked foamed boot. Background Art

[0002] Rain boots are made of waterproof material, and the most common structure is a rubber soft sole plus a soft tube, which is made by gluing the rubber sole and the boot tube. However, rain boots produced in this way still have the risk of debonding and leaking.

[0003] In addition, there is also an integrated production method, but the rain boots produced in this way will not have the problem of debonding, but because the overall material is relatively hard, the comfort of wearing is poor. Especially when walking, due to the hard material and long boot shaft, the upper will bend more, making the wearing comfort worse. Utility Model Content

[0004] The purpose of the utility model of the present application is to improve the problem of poor wearing comfort of one-piece molded rain boots. The present application provides a multi-density one-time molded cross-linked foam boot.

[0005] The multi-density one-step molding cross-linked foaming boots provided in this application adopt the following technical solutions:

[0006] A multi-density one-step molding cross-linked foaming boot, comprising

[0007] The sole, upper and shaft are all made of EVA material and are cross-linked and foamed in one piece in the same mold cavity, wherein the density of the sole material is higher than that of the upper and shaft materials;

[0008] The inner wall of the boot shaft is provided with a plurality of vertically arranged reinforcing ribs.

[0009] Optionally, the toe portion of the boot comprises a first reinforcement layer, the first reinforcement layer surrounds the toe portion in a "C" shape and wraps the toe portion;

[0010] The heel part of the boot contains a second reinforcement layer, which half-wraps the heel part;

[0011] The material density of the first reinforcement layer and the second reinforcement layer is the same as the material density of the sole.

[0012] Optionally, a third reinforcement layer is provided on the sole extending toward the upper, the third reinforcement layer evenly spreads to the upper ankle, and the connection between the top of the third reinforcement layer and the upper or boot shaft material is a smooth curve.

[0013] Optionally, both sides of the top of the third reinforcement layer are bent downwards for transition.

[0014] Optionally, the hardness of the sole material after ripening and forming is 50-70 degrees, and the hardness of the upper and shaft material after ripening and forming is 30-50 degrees.

[0015] Optionally, the thickness of the boot upper is greater than the thickness of the boot shaft.

[0016] Optionally, a plurality of air grooves are formed on surfaces of the first reinforcement layer and the second reinforcement layer in the shoe cavity along edge contours.

[0017] Optionally, the upper surface of the sole is provided with grid-like grooves.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] The one-piece molding of the sole, the shaft and the upper not only improves the integrity of the waterproof boots, but also ensures the strength of the sole and the comfort of the shaft and the upper through the different densities of the materials, thereby improving the wearing comfort of the one-piece molded cross-linked foamed boots;

[0020] The different thickness settings of the boot shaft and the boot upper can effectively reduce the impact of the deformation of the boot shaft on the boot upper, further improving the wearing comfort;

[0021] The setting of the reinforcing ribs can effectively improve the support of the boot shaft while reducing the use of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the structure of Example 1 of the present application;

[0023] Figure 2 is a cross-sectional view showing a reinforcing rib in Example 1 of the present application;

[0024] Figure 3 is a partial cross-sectional view showing the sole of a boot according to Example 1 of the present application;

[0025] Figure 4 It is a structural diagram of Example 2 of the present application.

[0026] In the figure, 1, sole; 2, upper; 3, shaft; 31, reinforcing ribs; 4, first reinforcing layer; 41, air groove; 5, second reinforcing layer; 6, third reinforcing layer. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-4 This application is described in further detail.

[0028] The embodiment of the present application discloses a multi-density one-step molded cross-linked foam boot. Example

[0029] refer to Figure 1 and Figure 2The multi-density one-step molded cross-linked foamed boots include a sole 1, an upper 2 and a shaft 3. The sole 1, upper 2 and shaft 3 are all made of EVA material and are cross-linked and foamed in one piece in the same mold cavity, wherein the density of the sole 1 material is higher than that of the upper 2 and shaft 3. The hardness of part of the sole 1 material after ripening and molding is 50-70 degrees, and 60 degrees in this embodiment. The hardness of part of the upper 2 after ripening and molding is 30-50 degrees, and 45 degrees in this embodiment. The thickness of the upper 2 is greater than that of the shaft 3. A plurality of vertically arranged reinforcing ribs 3 are arranged on the inner wall of the shaft 3. Reference Figure 3 The upper surface of the sole 1 is provided with grid-like grooves.

[0030] The sole 1, the upper 2 and the shaft 3 are integrally formed, which effectively improves the integrity of the material. While ensuring the strength of the sole 1, it can also improve the comfort of wearing. At the same time, the thickness of the upper 2 and the shaft 3 is set to reduce deformation conduction and improve the comfort of the foot. The shaft 3 can also be provided with reinforcing ribs 31 to provide shape support and improve air permeability.

[0031] refer to Figure 2 The toe portion of the boot comprises a first reinforcement layer 4, which surrounds the toe portion in a "C" shape and wraps the toe portion. The heel portion of the boot comprises a second reinforcement layer 5, which half wraps the heel portion. The material density of the first reinforcement layer 4 and the second reinforcement layer 5 is the same as that of the sole 1. The surfaces of the first reinforcement layer 4 and the second reinforcement layer 5 in the boot cavity are provided with a plurality of air grooves 41 along the edge contour.

[0032] After the material of the sole 1 is completed, it continues to spread to form a first reinforcement layer 4 and a second reinforcement layer 5 to protect the toes and heels. At the same time, the air groove 41 and the groove of the sole 1 are used to improve the air permeability. Example

[0033] refer to Figure 4 The difference between Example 2 of the present application and Example 1 is that the material of the sole 1 spreads upward to the upper 2 to form a third reinforcement layer 6. The top of the third reinforcement layer 6 is located at the ankle of the upper 2, and the connection between the top of the third reinforcement layer 6 and the upper 2 or the boot shaft 3 material is a smooth curve. The two sides of the top of the third reinforcement layer 6 are bent downward to transition. This meets the customization requirements of different customers.

[0034] The implementation principle of the multi-density one-time molded cross-linked foamed boots in the embodiment of the present application is: the integrity of the rain boots is improved by integrally molding the materials of the sole 1, the upper 2 and the shaft 3 with different densities, and the wearing comfort can be improved while ensuring the hardness of the sole 1 material, especially reducing the squeezing of the foot by the bending of the upper 2 when walking, thereby improving the overall wearing comfort.

[0035] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-density one-step molding cross-linked foaming boot, characterized in that: include The sole (1), the upper (2) and the shaft (3) are all made of EVA material and are integrally formed by cross-linking and foaming in the same mold cavity, wherein the density of the sole (1) material is higher than that of the upper (2) and the shaft (3); The inner wall of the boot shaft (3) is provided with a plurality of vertically arranged reinforcing ribs (31).

2. The multi-density one-step molded cross-linked foamed boot according to claim 1, characterized in that: The toe portion of the boot contains a first reinforcement layer (4), and the first reinforcement layer (4) surrounds the toe portion of the shoe to form a "C" shape and wraps the toe portion; The heel portion of the boot contains a second reinforcement layer (5), and the second reinforcement layer (5) half-wraps the heel portion; The material density of the first reinforcement layer (4) and the second reinforcement layer (5) is the same as the material density of the sole (1).

3. The multi-density one-step molded cross-linked foaming boot according to claim 1, characterized in that: The sole (1) is provided with a third reinforcement layer (6) extending toward the upper (2); the third reinforcement layer (6) evenly spreads to the ankle of the upper (2); and the connection between the top of the third reinforcement layer (6) and the upper (2) or the boot shaft (3) material is a smooth curve.

4. The multi-density one-step molded cross-linked foaming boot according to claim 3, characterized in that: The third reinforcement layer (6) is provided with a downwardly curved transition at both sides of the top.

5. The multi-density one-step molded cross-linked foamed boot according to claim 2, characterized in that: The hardness of the boot sole (1) part after being cured and formed is 50-70 degrees, and the hardness of the boot upper (2) and the boot shaft (3) part after being cured and formed is 30-50 degrees.

6. A multi-density one-step molded cross-linked foaming boot according to any one of claims 1 to 4, characterized in that: The thickness of the boot upper (2) is greater than the thickness of the boot shaft (3).

7. The multi-density one-step molded cross-linked foamed boot according to claim 2, characterized in that: The surfaces of the first reinforcement layer (4) and the second reinforcement layer (5) in the boot cavity are provided with a plurality of air grooves (41) along the edge contour.

8. A multi-density one-step molded cross-linked foamed boot according to any one of claims 1 to 4, characterized in that: The upper surface of the boot sole (1) is provided with grid-shaped grooves.

Images