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

Abstract

The utility model discloses a multi-density one-time forming cross-linked foaming shoe, and relates to the technical field of shoes, each shoe comprises a sole and a vamp, the sole and the vamp are both made of EVA materials and formed in the same mold cavity in a cross-linked foaming mode, and the density of the sole material is higher than that of the vamp material; the toe cap part comprises a first reinforcing layer, and the first reinforcing layer encircles the toe cap to form a C shape at the toe cap part and wraps the toe part; the heel part comprises a second reinforcing layer, and the heel part is semi-wrapped by the second reinforcing layer; the first reinforcing layer and the second reinforcing layer have the same material density as the sole material. The waterproof shoe has the effect of improving the wearing comfort of the waterproof shoe.

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 shoe. Background Art

[0002] Waterproof shoes are waterproof shoes, generally made of rubber material, and are molded by injection molding on a mold. Some products are molded in one piece, while others are divided into two parts, the sole and the upper, which are manufactured separately and then bonded together.

[0003] Among them, waterproof shoes produced by the split bonding method have the risk of debonding, while the one-step molding production method will cause the density of the sole and upper materials to be the same, which will cause discomfort when wearing. Utility Model Content

[0004] The purpose of the utility model of the present application is to improve the problem of discomfort in wearing waterproof shoes formed once, and the present application provides a multi-density one-time molded cross-linked foam shoe.

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

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

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

[0008] A reinforcement part is provided at the connection between the upper and the sole, and the reinforcement part is made of the same material as the sole.

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

[0010] The second reinforcement layer half-wraps the heel portion.

[0011] 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.

[0012] Optionally, the reinforcement portion spreads uniformly upward from the sole, and the top portion connected to another material is a smooth curve, with a height exceeding the height of the heel in the shoe.

[0013] Optionally, the tops of both sides of the reinforcement part are bent downwards for transition.

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

[0015] Optionally, the upper surface of the sole is provided with grid-like grooves.

[0016] Optionally, the middle positions of both sides of the top of the shoe upper are curved downward.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] The EVA materials of different densities on the upper and sole are cross-linked and foamed into one piece, which not only improves the wearing comfort, but also improves the strength of the shoe through one-piece molding, reducing the risk of cracking;

[0019] The harder material of the sole also spreads to the toe and heel, making the toe and heel harder, effectively improving the protection of the foot;

[0020] The mesh grooves on the sole and the air grooves on the toe and heel can effectively improve the air circulation effect in the shoe, thereby improving the heat dissipation effect of the waterproof shoe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the structure of Example 1 of the present application;

[0022] Figure 2 is a partial cross-sectional view showing the air slot in Example 1 of the present application;

[0023] Figure 3 is a partial cross-sectional view showing the sole of Example 1 of the present application;

[0024] Figure 4 It is a structural diagram of Example 2 of the present application.

[0025] In the figure, 1, sole; 2, upper; 3, first reinforcement layer; 31, air groove; 4, second reinforcement layer; 5, reinforcement part. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-4 This application is described in further detail.

[0027] The embodiment of the present application discloses a multi-density one-step molded cross-linked foam shoe. Example 1

[0028] refer to Figure 1 and Figure 2 The multi-density one-time molded cross-linked foamed shoes include a sole 1 and an upper 2. The sole 1 and the upper 2 are both made of EVA materials and cross-linked and foamed in the same mold cavity, wherein the density of the sole 1 material is higher than that of the upper 2 material. The hardness of the sole 1 part after ripening and molding is 50-70 degrees, and 60 degrees in this embodiment. The hardness of the upper 2 part after ripening and molding is 30-50 degrees, and 45 degrees in this embodiment. The middle position of the top two sides of the upper 2 is in a downward arc.

[0029] The upper 2 and the sole 1 are made of the same material with different density and injected into the same mold cavity, connected and then cured to form an integrated structure, thereby forming a cross-linked foamed waterproof shoe with two different hardnesses of the sole 1 and the upper 2, which ensures the strength and wear resistance of the sole 1 and can also improve the wearing comfort through the soft material of the upper 2. The arc-shaped setting on the top of the upper 2 can also match the ankle to improve the wearing comfort.

[0030] refer to Figure 2 and Figure 3 The upper 2 part extends upward from the sole 1 to form a reinforcement part 5, and the material of the reinforcement part 5 is the same as that of the sole 1. The reinforcement part 5 includes a first reinforcement layer 3 and a second reinforcement layer 4.

[0031] The first reinforcement layer 3 forms a "C" shape around the toe portion of the shoe and wraps the toe portion. The second reinforcement layer 4 half wraps the heel portion. The material density of the first reinforcement layer 3 and the second reinforcement layer 4 is the same as the material density of the sole 1, and is formed by filling the sole 1 with the sole 1 material and then spreading it. A grid-shaped groove is provided on the upper surface of the sole 1. The surfaces of the first reinforcement layer 3 and the second reinforcement layer 4 in the shoe cavity are provided with multiple air grooves 31 along the edge contour.

[0032] The first reinforcement layer 3 and the second reinforcement layer 4 formed integrally with the sole 1 can effectively strengthen the protection of the toe and the heel, which not only improves the support of the shoe, but also improves the protection effect on the foot. The air groove 31 and the mesh groove structure of the sole 1 can effectively improve the air permeability of the shoe, thereby improving the wearing comfort. Example 2

[0033] refer to Figure 4 The difference between Example 2 of the present application and Example 1 is that the reinforcement part 5 spreads upward uniformly from the sole 1, and the top is connected to another material in a smooth curve, and the height exceeds the height of the heel in the shoe. The tops of both sides of the reinforcement part 5 are bent downwardly for transition. The shape and position of the reinforcement part 5 can effectively protect and support the instep, toes and heels, and the downward bending of the reinforcement part 5 can effectively improve the comfort of the ankle.

[0034] The implementation principle of the multi-density one-time molded cross-linked foamed shoes in the embodiment of the present application is: through the integrated injection, cross-linking, foaming and maturation molding of EVA materials of different densities for the sole 1 and the upper 2, the sole 1 part and the upper 2 part are made of an integrated material of different hardness, thereby ensuring the strength of the sole 1 while also improving the wearing comfort of the upper 2, thereby improving the wearing comfort of the cross-linked foamed waterproof shoes.

[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 foam shoe, characterized in that: include The sole (1) and the upper (2) are both made of EVA material and are cross-linked and foamed in the same mold cavity, wherein the material density of the sole (1) is higher than the material density of the upper (2); A reinforcement part (5) is provided at the connection between the upper (2) and the sole (1), and the reinforcement part (5) is made of the same material as the sole (1).

2. The multi-density one-step molded cross-linked foamed shoe according to claim 1, characterized in that: The reinforcement part (5) comprises a first reinforcement layer (3) and a second reinforcement layer (4), wherein the first reinforcement layer (3) surrounds the toe portion of the shoe into a "C" shape and wraps the toe portion; The second reinforcement layer (4) half-wraps the heel portion.

3. The multi-density one-step molded cross-linked foamed shoe according to claim 2, characterized in that: The surfaces of the first reinforcement layer (3) and the second reinforcement layer (4) in the shoe cavity are provided with a plurality of air grooves (31) along the edge contours.

4. The multi-density one-step molded cross-linked foamed shoe according to claim 1, characterized in that: The reinforcement part (5) evenly spreads upward from the sole (1), and the connection between the top and another material is a smooth curve, and the height exceeds the height of the heel in the shoe.

5. The multi-density one-step molded cross-linked foamed shoe according to claim 4, characterized in that: The tops of both sides of the reinforcement part (5) are bent and transitionally arranged downwards.

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

7. The multi-density one-step molded cross-linked foamed shoe according to any one of claims 1 to 5, characterized in that: The upper surface of the sole (1) is provided with grid-shaped grooves.

8. The multi-density one-step molded cross-linked foamed shoe according to any one of claims 1 to 5, characterized in that: The middle positions of both sides of the top of the shoe upper (2) are in a downward arc.

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