Heel cup, PP film laminating method thereof and shoe

Abstract

The invention discloses a heel cup, a PP film attaching method thereof and a shoe, the heel cup comprises a heel cup main body, the heel cup main body is of a three-dimensional structure, and the heel cup main body comprises an outer layer and an inner layer; the lining is arranged on the inner side of the outer layer and is a waterproof lining; and the PP film is fixed on the surface of the outer layer through fusing combination, and the surface of the PP film is provided with three-dimensional textures formed by hot pressing. According to the heel cup, the PP film attaching method thereof and the shoe, the heel cup not only has a waterproof function, but also can be tightly attached to the three-dimensional and large-area PP film, and therefore the application range of the heel cup is widened.

Description

Technical Field

[0001] The invention relates to the technical field of footwear products, and in particular to a heel cup and a PP film laminating method thereof, and a shoe. Background Art

[0002] In the field of footwear manufacturing, there are two major problems with existing heel cup technology: first, it is impossible to achieve good waterproof performance. Traditional materials and processes are difficult to effectively prevent water penetration, affecting wearing comfort and shoe life; second, it is difficult to form a three-dimensional large-area PP film coverage through secondary processing, which limits the application of heel cups in complex structural designs. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background technology, and to provide a heel cup and a PP film bonding method and a shoe. The heel cup not only has a waterproof function, but also can closely fit a three-dimensional and large-area PP film, thereby broadening its application range.

[0004] To achieve the above objectives, various embodiments of the present invention adopt the following technical solutions but are not limited to the following solutions:

[0005] The first technical solution relates to a heel cup, including a heel cup body, which is a three-dimensional structure. The heel cup body includes: an outer layer; an inner lining, which is arranged on the inner side of the outer layer and is a waterproof inner lining; and a PP film, which is fixed to the surface of the outer layer by fuse bonding, and the surface of the PP film is provided with a thermoformed three-dimensional texture.

[0006] The second technical solution is based on the first technical solution, wherein the inner lining is made of waterproof fabric.

[0007] The third technical solution is based on the first technical solution, wherein a waterproof membrane is bonded between the inner lining and the outer layer.

[0008] The fourth technical solution is based on the first technical solution, wherein the heel cup body is formed through a first fusing and forming process and a second fusing and forming process to achieve PP film covering.

[0009] The fifth technical solution is based on the fourth technical solution, wherein the PP film is fixed to the outer layer by ultrasound after the first melting.

[0010] The sixth technical solution is based on the fifth technical solution, wherein the heel cup body is reshaped and restored to its three-dimensional structure through a hot pressing mold after the second melting.

[0011] The seventh technical solution is based on the sixth technical solution, wherein the three-dimensional texture of the PP film is formed by a hot pressing mold.

[0012] The eighth technical solution is based on any one of the first to seventh technical solutions, wherein a method for laminating a heel cup PP film as mentioned above comprises the following steps: surface treating the heel cup body to enhance adhesion; melting the heel cup body for the first time, using ultrasound to fix the PP film on the heel cup body after the first melting, and completing the first shaping; melting the heel cup body to which the PP film has been laminated for a second time; fixing the heel cup body that has been melted for the second time in a hot pressing mold for a second shaping; after the second shaping is completed, performing a quality inspection and confirming whether the color effect meets the requirements.

[0013] The ninth technical solution is based on the eighth technical solution, wherein both fuse shaping processes use a fuse shaping machine.

[0014] The tenth technical solution is based on any one of the first to seventh technical solutions, wherein a shoe has a heel portion that adopts the above-mentioned heel cup.

[0015] From the above description of the various embodiments of the present invention, it can be seen that, compared with the prior art, the various embodiments of the present invention have the following advantages:

[0016] Beneficial effects:

[0017] In the first technical solution and related embodiments, the three-dimensional heel cup body adopts a waterproof lining to effectively block water penetration and keep the inside of the shoe dry. The PP film is superimposed on the outer surface through a secondary melting process to form a three-dimensional PP texture structure to enhance the bonding strength and improve the bonding strength, overall support and wrapping of the heel cup. This process achieves three-dimensional large-area PP film coverage, broadening the application of the heel cup in complex structural designs.

[0018] In the second technical solution and related embodiments, this is an embodiment of the inner lining, and waterproof fabric is directly selected as the inner lining to effectively block moisture penetration.

[0019] In the third technical solution and related embodiments, this is an inner embodiment, which forms a waterproof effect by laminating a waterproof film.

[0020] In the fourth technical solution and related embodiments, two fusing and shaping operations are performed to ensure a firm bond between the PP film and the heel cup body, thereby improving the structural strength and durability of the heel cup.

[0021] In the fifth technical solution and related embodiments, the high-frequency vibration of the ultrasonic wave can quickly and tightly combine the PP film with the heel cup body, ensuring the firmness and uniformity of the fit.

[0022] In the sixth technical solution and related embodiments, the use of a hot pressing mold ensures the accuracy and stability of the three-dimensional structure of the heel cup body.

[0023] In the seventh technical solution and related embodiments, the three-dimensional texture formed by the hot pressing mold is not only beautiful, but also enhances the bonding force between the PP film and the heel cup body, thereby improving the visual effect and durability of the heel cup.

[0024] In the eighth technical solution and related embodiments, the method ensures the close bonding between the PP film and the heel cup body and the formation of a three-dimensional texture, thereby improving the production efficiency and product quality of the heel cup.

[0025] In the ninth technical solution and related embodiments, the use of a fuse setting machine improves the accuracy and efficiency of fuse setting and ensures the consistency and stability of the heel cup.

[0026] In the tenth technical solution and related embodiments, the heel part of the shoe is combined with the support, comfort and waterproof performance of the heel cup to improve the overall quality and wearing experience of the shoe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 is a front view of the heel cup of the embodiment;

[0029] Figure 2 This is a schematic diagram of the back of the heel cup of the embodiment;

[0030] Figure 3 It is a side view of the heel cup of the embodiment. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

[0033] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present invention.

[0034] In the claims, specification and the above drawings of the present invention, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0035] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0036] like Figures 1 to 3 As shown, a heel cup includes a heel cup body, which is a three-dimensional structure, can better fit the foot shape, reduce friction and discomfort, and ensure comfort when wearing. Specifically, the heel cup uses a commercially available heel cup finished product with a three-dimensional structure. The heel cup body includes an outer layer, an inner lining and a PP film.

[0037] The outer layer is made of mesh or leather. Mesh provides breathability and lightness, and is often used in sports shoes or casual shoes; leather provides durability, comfort and aesthetics, and is often used in formal shoes or boots.

[0038] The inner lining is a waterproof inner lining. The inner lining of the commercially available heel cup is usually not waterproof. The present application achieves the waterproof function of the inner lining through the following two embodiments.

[0039] Embodiment 1

[0040] The heel cup lining on the market is usually not waterproof. In order to improve the waterproof performance of the heel cup, the lining of the heel cup is replaced with a waterproof fabric in this embodiment. In this embodiment, GORE-TEX is selected as the fabric of the waterproof lining. This fabric can effectively block water penetration while maintaining good air permeability.

[0041] Embodiment 2

[0042] A waterproof membrane is attached between the inner and outer layers. This waterproof membrane needs to have good high temperature resistance to ensure that it will not be damaged by high temperature during the subsequent production and processing. For example, a TPU film can be used to prevent moisture from penetrating through the gap in the heel cup.

[0043] The PP film is fixed to the outer surface by fusing, and the surface of the PP film is provided with a thermoformed three-dimensional texture to enhance the bonding strength, overall support and wrapping of the heel cup.

[0044] The heel cup body is formed by the first fusing and the second fusing to achieve PP film covering. The two fusing and shaping ensures a firm bond between the PP film and the heel cup body, thereby improving the structural strength and durability of the heel cup.

[0045] The PP film is fixed to the outer layer by ultrasound after the first melting. The high-frequency vibration of ultrasound can quickly and tightly combine the PP film with the heel cup body to ensure the firmness and uniformity of the fit.

[0046] After the second melting, the heel cup body is reshaped by the hot pressing mold to restore its three-dimensional structure. The three-dimensional texture of the PP film is formed by the hot pressing mold. The three-dimensional texture formed by the hot pressing mold is not only beautiful, but also enhances the bonding force between the PP film and the heel cup body, improving the visual effect and durability of the heel cup.

[0047] In this embodiment, the three-dimensional heel cup body adopts a waterproof lining to effectively block water penetration and keep the inside of the shoe dry. The PP film is superimposed on the outer surface through a secondary melting process to form a three-dimensional PP texture structure to enhance the bonding strength and improve the bonding strength, overall support and wrapping of the heel cup. This process achieves three-dimensional large-area PP film coverage, broadening the application of the heel cup in complex structural designs.

[0048] A method for laminating a PP film to a heel cup as described above, comprising the following steps: performing surface treatment on a heel cup body to enhance adhesion; fusing the heel cup body for the first time, fixing the PP film on the heel cup body after the first fusing using ultrasound, and completing the first shaping; fusing the heel cup body to which the PP film has been laminated for a second time; fixing the heel cup body after the second fusing in a hot pressing mold, and performing a second shaping; after the second shaping is completed, performing a quality inspection, and confirming whether the color effect meets the requirements.

[0049] The secondary fusing and shaping adopts the fusing and shaping machine. The use of the fusing and shaping machine improves the accuracy and efficiency of the fusing and shaping, and ensures the consistency and stability of the heel cup. The secondary fusing is divided into an upper mold and a lower mold. The upper mold and the lower mold are divided into hot pressing and cooling steps, first hot pressing and then cooling.

[0050] The specific steps are as follows:

[0051] Step 1: Surface treatment: Surface treatment is performed on the heel cup body to enhance its adhesion to the PP film. The treatment agent is applied to the surface of the heel cup body and baked to the specified temperature and time.

[0052] Step 2, first fusing and shaping: Adjust the parameters of the fusing and shaping machine, put the heel cup body into the mold for the first fusing. Use ultrasound to fix the PP film on the heel cup body to ensure a tight fit. Then perform the first shaping to make the PP film and the heel cup body tightly combined.

[0053] Among them, the hot pressing parameters for the first melting are: the upper mold setting temperature is 170±10℃, the lower mold setting temperature is 120±10℃, the hot pressing pressure is 15-30pa, and the hot pressing time is 10-15 seconds.

[0054] Cooling parameters for the first fuse: cooling pressure 10-30pa, cooling time 5-8 seconds.

[0055] First shaping process: prepare materials such as interlayer cotton, heel pads, eyelet reinforcements, etc., and assemble and position them according to design requirements. Then, put the assembled heel cup body into the mold for the first shaping. After shaping is completed, make necessary trimming and inspection.

[0056] During the first shaping, the upper mold temperature is set at 192°C, the lower mold temperature is set at 188°C, and the time is 260 seconds. The mold temperature is measured every 2 hours to prevent the temperature from being too high or too low and the quality from changing.

[0057] Step 3, Second Fusing: Perform necessary trimming and inspection on the heel cup body after the first shaping, and then send it to the fusing shaping machine for the second fusing to further consolidate the bonding force between the PP film and the heel cup body.

[0058] Among them, the hot pressing parameters for the second melting are: the upper mold setting temperature is 170±10℃, the lower mold setting temperature is 120±10℃, the hot pressing pressure is 15-30pa, and the hot pressing time is 10-15 seconds.

[0059] Cooling parameters for the second fusing: cooling pressure 10-30pa, cooling time 5-8 seconds.

[0060] Step 4: Second shaping: The heel cup body after the second melting is subjected to treatments such as spraying glue, trimming, and stitching, and then placed in a secondary mold for second shaping to form a stable three-dimensional texture structure.

[0061] During the second shaping process, the upper mold temperature was set at 188°C, the lower mold temperature was set at 185°C, and the time was 260 seconds. The mold temperature was measured every 2 hours to prevent the temperature from being too high or too low and the quality from changing.

[0062] Step 5: Quality inspection: After the second shaping is completed, check whether the heel cup body has defects such as glue overflow and skewness, and confirm whether the color effect meets the requirements. The inspection standards include no burrs, uniform color, consistent depth, and accurate pattern position.

[0063] A shoe, the heel part of which adopts the heel cup in the above embodiment. The heel part of the shoe combines the support, comfort and waterproof performance of the heel cup to improve the overall quality and wearing experience of the shoe.

[0064] The description of the above specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the enlightenment of the present invention or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent substitutions or other improvements to the embodiments of the present invention or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the present invention.

Claims

1. A heel cup, characterized in that: The invention comprises a heel cup body, which is a three-dimensional structure, and the heel cup body comprises: Outer layer; An inner lining, which is disposed inside the outer layer and is a waterproof inner lining; and The PP film is fixed to the outer layer surface by fusing, and the surface of the PP film is provided with a three-dimensional texture formed by heat pressing.

2. A heel cup as claimed in claim 1, characterized in that: The lining is made of waterproof fabric.

3. A heel cup as claimed in claim 1, characterized in that: A waterproof membrane is attached between the inner lining and the outer layer.

4. A heel cup as claimed in claim 1, characterized in that: The heel cup body is formed through a first fusing and shaping process and a second fusing and shaping process to achieve PP film covering.

5. A heel cup as claimed in claim 4, characterized in that: The PP film is fixed to the outer layer by ultrasound after the first melting.

6. A heel cup as claimed in claim 5, characterized in that: The heel cup body is reshaped and restored to its three-dimensional structure through a hot pressing mold after the second melting.

7. A heel cup as claimed in claim 6, characterized in that: The three-dimensional texture of the PP film is formed by a hot pressing mold.

8. A PP film laminating method for a heel cup as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: The heel cup body is surface treated to enhance adhesion; the heel cup body is melted for the first time, and the PP film is fixed on the heel cup body after the first melting by using ultrasound, and the first shaping is completed; the heel cup body with the PP film attached is melted for the second time; the heel cup body after the second melting is fixed in a hot pressing mold for the second shaping; after the second shaping is completed, a quality inspection is carried out to confirm whether the color effect meets the requirements.

9. A PP film laminating method for a heel cup as claimed in claim 8, characterized in that: Both fuse shaping processes are performed using a fuse shaping machine.

10. A shoe, characterized in that: The heel portion thereof adopts a heel cup as claimed in any one of claims 1 to 7.

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