Heel cup, pp film laminating method therefor, and shoe

Abstract

Disclosed are a heel cup, a PP film laminating method therefor, and a shoe. The heel cup comprises a heel cup body having a three-dimensional structure. The heel cup body comprises: an outer layer; an inner lining, which is arranged on an inner side of the outer layer and is a waterproof inner lining; and a PP film, fixed to a surface of the outer layer by means of fusion bonding, a surface of the PP film being provided with a three-dimensional texture formed by means of hot pressing. The present invention provides a heel cup, a PP film laminating method therefor, and a shoe. The heel cup not only has a waterproof function, but also can be closely laminated with a three-dimensional and large-area PP film, thereby broadening the range of application range thereof.

Description

A heel cup and its PP film bonding method and shoe Technical Field

[0001] This invention relates to the field of footwear technology, specifically to a heel cup, a PP film bonding method thereon, and a shoe. Background Technology

[0002] In the footwear manufacturing industry, existing heel cup technology has two major problems: First, it cannot 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 this invention is to overcome the above-mentioned defects or problems in the prior art and to provide a heel cup, a PP film bonding method therewith, and a shoe. The heel cup not only has a waterproof function, but can also be tightly bonded to a three-dimensional and large-area PP film, thereby broadening its application range.

[0004] To achieve the above objectives, the various embodiments of the present invention employ 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 has a three-dimensional structure. The heel cup body includes: an outer layer; an inner lining, which is disposed inside the outer layer and is a waterproof lining; and a PP film, which is fixed to the surface of the outer layer by fusion bonding. The surface of the PP film is provided with a three-dimensional texture formed by hot pressing.

[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 layer and the outer layer.

[0008] The fourth technical solution is based on the first technical solution, wherein the heel cup body is formed by a first melting and shaping and a second melting and shaping to achieve PP film coverage.

[0009] The fifth technical solution is based on the fourth technical solution, in which 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 by 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 bonding a PP film to a heel cup as described above includes the following steps: performing surface treatment on the heel cup body to enhance adhesion; firstly fusing the heel cup body, using ultrasound to fix the PP film onto the heel cup body after the first fusing, and completing the first shaping; secondly fusing the heel cup body with the bonded PP film; fixing the heel cup body after the second fusing in a hot press mold for the 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, in which both melting and shaping processes use a melting and 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 cup as described above in its heel portion.

[0015] As can be seen from the above description of the various embodiments of the present invention, compared with the prior art, the various embodiments of the present invention have the following beneficial effects:

[0016] In the first technical solution and related embodiments, the three-dimensional heel cup body adopts a waterproof lining, effectively preventing water penetration and keeping the inside of the shoe dry. A PP film is superimposed on the outer surface through a secondary melting process to form a three-dimensional PP textured structure, thereby enhancing the bonding strength and improving the overall support and wrapping properties of the heel cup. This process achieves large-area three-dimensional PP film coverage, broadening the application of heel cups in complex structural designs.

[0017] In the second technical solution and related embodiments, this is one embodiment of the lining, which directly selects waterproof fabric as the lining to effectively block moisture penetration.

[0018] In the third technical solution and related embodiments, this is one embodiment of the interior, which forms a waterproof effect by bonding a waterproof membrane.

[0019] In the fourth technical solution and related embodiments, the PP film and the heel cup body are firmly bonded by two melting and shaping processes, thereby improving the structural strength and durability of the heel cup.

[0020] In the fifth technical solution and related embodiments, the high-frequency vibration of ultrasound can quickly and tightly bond the PP film to the heel cup body, ensuring the firmness and uniformity of the fit.

[0021] In the sixth technical solution and related embodiments, the use of hot pressing molds ensures the accuracy and stability of the three-dimensional structure of the heel cup body.

[0022] In the seventh technical solution and related embodiments, the three-dimensional texture formed by the hot pressing mold is not only aesthetically pleasing, 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.

[0023] In the eighth technical solution and related embodiments, the method ensures a tight bond 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.

[0024] In the ninth technical solution and related embodiments, the use of the fusing and shaping machine improves the accuracy and efficiency of fusing and shaping, and ensures the consistency and stability of the heel cup.

[0025] In the tenth technical solution and related embodiments, the heel portion 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. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments are briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 is a front view of the heel cup in the embodiment;

[0028] Figure 2 is a schematic diagram of the back of the cup in the embodiment;

[0029] Figure 3 is a schematic diagram of the side of the cup in the embodiment. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0032] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this invention, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this invention.

[0033] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.

[0034] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0035] As shown in Figures 1 to 3, a heel cup includes a heel cup body with a three-dimensional structure, which can better conform to the shape of the foot, reduce friction and discomfort, and ensure comfort when wearing. Specifically, the heel cup uses a commercially available finished heel cup with a three-dimensional structure. The heel cup body includes an outer layer, an inner lining, and a PP film.

[0036] The outer layer is made of mesh or leather. Mesh provides breathability and lightweight, and is often used in athletic or casual shoes; leather provides durability, comfort, and aesthetics, and is often used in formal shoes or boots.

[0037] The inner lining is waterproof. Commercially available heel cups typically do not have waterproof linings; this application achieves waterproof functionality through the following two embodiments. Example 1

[0038] Traditional heel cup linings typically lack waterproofing. To improve the waterproofing performance of the heel cup, this embodiment replaces the lining with a waterproof fabric. In this embodiment, GORE-TEX is selected as the waterproof lining fabric. This fabric effectively blocks water penetration while maintaining good breathability. Example 2

[0039] A waterproof membrane is bonded between the inner and outer layers. This membrane needs to have good high-temperature resistance to ensure it is not damaged by high temperatures during subsequent manufacturing processes. For example, a TPU film can be used to prevent moisture from seeping through the gaps in the heel cup.

[0040] The PP film is fixed to the outer surface by fusion bonding. The surface of the PP film has a three-dimensional texture formed by hot pressing, which enhances the bonding strength, overall support and wrapping of the heel cup.

[0041] The heel cup body is formed through a first and second melting and shaping process to achieve PP film coverage. This two-stage melting and shaping ensures a strong bond between the PP film and the heel cup body, improving the structural strength and durability of the heel cup.

[0042] After the PP film melts during the first bonding process, it is fixed to the outer layer using ultrasound. The high-frequency vibration of the ultrasound can quickly and tightly bond the PP film to the heel cup body, ensuring a firm and uniform fit.

[0043] After the heel cup body is melted a second time, it is reshaped using a hot-pressing mold to restore its three-dimensional structure. The three-dimensional texture of the PP film is formed using a hot-pressing mold. The three-dimensional texture formed by the hot-pressing mold is not only aesthetically pleasing, but also enhances the bonding strength between the PP film and the heel cup body, improving the visual effect and durability of the heel cup.

[0044] In this embodiment, the three-dimensional heel cup body uses a waterproof lining to effectively prevent water penetration and keep the inside of the shoe dry. A PP film is superimposed on the outer surface through a secondary melting process to form a three-dimensional PP textured structure, thereby enhancing the bonding strength and improving the overall support and wrapping properties of the heel cup. This process achieves large-area three-dimensional PP film coverage, broadening the application of heel cups in complex structural designs.

[0045] A method for laminating a PP film to a heel cup as described above includes the following steps: surface treatment of the heel cup body to enhance adhesion; first melting the heel cup body, using ultrasound to fix the PP film onto the heel cup body after the first melting, and completing the first shaping; second melting the heel cup body with the PP film laminated; fixing the heel cup body after the second melting in a hot press mold for a second shaping; after the second shaping is completed, performing a quality inspection and confirming whether the color effect meets the requirements.

[0046] The secondary melting and shaping process utilizes a melting and shaping machine. The use of this machine improves the accuracy and efficiency of the melting and shaping process, ensuring the consistency and stability of the heel cup. The secondary melting process involves an upper mold and a lower mold, which are further divided into hot pressing and cooling steps, with hot pressing preceding cooling.

[0047] The specific steps are as follows:

[0048] Step 1: Surface Treatment: Perform surface treatment on the heel cup body to enhance its adhesion to the PP film. Apply a treatment agent to the surface of the heel cup body and bake it to the specified temperature and time.

[0049] Step Two: First Welding and Shaping: Adjust the parameters of the welding and shaping machine, and place the heel cup body into the mold for the first welding. Use ultrasound to fix the PP film onto the heel cup body, ensuring a tight fit. Then perform the first shaping to ensure a tight bond between the PP film and the heel cup body.

[0050] The hot-pressing parameters for the first melting point are as follows: upper mold temperature set at 170±10℃, lower mold temperature set at 120±10℃, hot-pressing pressure at 15-30pa, and hot-pressing time at 10-15 seconds.

[0051] Cooling parameters for the first meltdown: cooling pressure 10-30 Pa, cooling time 5-8 seconds.

[0052] The first shaping process involves preparing materials such as interlayer cotton, heel counter, and eyelet reinforcement, and assembling and positioning them according to design requirements. Then, the assembled heel cup body is placed into the mold for the first shaping. After shaping, necessary adjustments and inspections are performed.

[0053] During the first shaping process, the upper mold temperature was set to 192℃ and the lower mold temperature to 188℃, with a time of 260 seconds. The mold temperature was measured every 2 hours to prevent excessively high or low temperatures and to prevent quality variations.

[0054] Step 3, Second Welding: After the first shaping, the heel cup body is repaired and inspected as necessary, and then sent to the welding and shaping machine for a second welding to further strengthen the bonding force between the PP film and the heel cup body.

[0055] The hot-pressing parameters for the second melting are as follows: the upper mold temperature is set at 170±10℃, the lower mold temperature is set at 120±10℃, the hot-pressing pressure is 15-30pa, and the hot-pressing time is 10-15 seconds.

[0056] Cooling parameters for the second meltdown: cooling pressure 10-30 Pa, cooling time 5-8 seconds.

[0057] Step 4, Second Shaping: After the second melting, the main body of the heel cup is treated with glue spraying, trimming, and stitching, and then placed into a secondary mold for a second shaping to form a stable three-dimensional texture structure.

[0058] During the second shaping process, the upper mold temperature was set to 188℃ and the lower mold temperature to 185℃, with a time of 260 seconds. The mold temperature was measured every 2 hours to prevent excessively high or low temperatures and to prevent quality variations.

[0059] Step 5: Quality Inspection: After the second shaping is completed, check the heel cup body for defects such as excess glue or misalignment, and confirm that the color effect meets the requirements. Inspection standards include no rough edges, uniform color, consistent shade, and accurate pattern positioning.

[0060] A shoe whose heel portion utilizes the heel cup described in the above embodiment. The heel portion of this shoe combines the support, comfort, and waterproofing properties of the heel cup, enhancing the overall quality and wearing experience of the shoe.

[0061] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this invention, but does not constitute a limitation on the scope of protection of this invention. Modifications, equivalent substitutions, or other improvements to the embodiments of this invention or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this invention or the foregoing embodiments, in conjunction with common knowledge, general technical knowledge, and / or existing technology, should all be included within the scope of protection of this invention.

Claims

1. A heel cup, characterized in that, Includes a heel cup body, which has a three-dimensional structure, and the heel cup body includes: Outer layer; The inner lining, located inside the outer layer, is waterproof; and A PP film is fixed to the outer surface by fusion bonding, and the surface of the PP film is provided with a three-dimensional texture formed by hot pressing.

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

3. A heel cup as described in claim 1, characterized in that, A waterproof membrane is bonded between the inner layer and the outer layer.

4. A heel cup as described in claim 1, characterized in that, The heel cup body is formed through a first melting and shaping process and a second melting and shaping process to achieve PP film coverage.

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

6. A heel cup as described in claim 5, characterized in that, After the heel cup body melts a second time, it is reshaped and its three-dimensional structure is restored by hot pressing mold.

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

8. A method for laminating a PP film to a heel cup as described in any one of claims 1 to 7, characterized in that, Includes the following steps: The surface of the heel cup body is treated to enhance adhesion; the heel cup body is melted for the first time, and the PP film is fixed to the heel cup body after the first melting using ultrasound, thus completing the first shaping; 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 the hot press 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 method for bonding a PP film to a heel cup as described in claim 8, characterized in that, Both melting and shaping processes were performed using a melting and shaping machine.

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

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