Waterproof shoe joint waterproof structure

Abstract

The utility model relates to the technical field of waterproof shoe structures, in particular to a waterproof structure of a waterproof shoe joint, which is structurally characterized in that a waterproof shoe comprises a vamp with a vamp net foot edge and a lapped bottom lining with a bottom lining edge, and further comprises a sole connected to the bottom of the vamp and the lapped bottom lining, a joint seam is formed between the shoe upper net foot edge and the bottom lining edge, and the joint seam is filled and blocked through hot melt adhesive fusion infiltration; or, the vamp is provided with a splicing seam, a joint seam is arranged between the edge of the net foot of the vamp and the edge of the bottom lining, and the splicing seam and the joint seam are connected through hot melt adhesive filling and plugging. The utility model provides a novel waterproof structure which can effectively prevent water permeation and is beneficial to simplifying the production and manufacturing process of waterproof shoes.

Description

Technical Field

[0001] The utility model relates to the technical field of waterproof shoe structure and production process, in particular to the waterproof structure and waterproof treatment process technology of waterproof shoes. Background Art

[0002] Waterproof shoes are a feature that consumers often hear about in recent years. However, some of the waterproof shoes currently promoted for daily wear are still relatively shallow in waterproofness. Some can only achieve instantaneous waterproof penetration on the upper. This cannot pass the relevant product waterproofing testing standards in the industry. Professional waterproof shoes must meet the standards not only in static waterproofing tests, but also in dynamic waterproofing tests.

[0003] At present, professional waterproof shoe structures usually incorporate a waterproof sock layer into the shoe during shoe production. As the name suggests, the waterproof sock layer has a sock-like structure that can wrap the entire foot and achieve a waterproof effect that prevents external water from intruding into the interior. After years of production, waterproof shoes with this waterproof structure still use this sock-like structure to achieve waterproofness. However, this sock-like waterproof structure has the following problems: 1. The waterproof sock layer achieves waterproofness of the fabric by compounding a waterproof membrane on the fabric. The waterproof membrane has a good waterproof effect, but the waterproof membrane also has poor air permeability, affecting the breathability and comfort of the shoe; 2. The waterproof membrane may be broken or punctured during use, which will directly cause the waterproof shoe to become permanently waterproof. 1. The waterproof sock layer must be pre-produced and tested for waterproofness before the waterproof shoes are manufactured, and can only be used after passing the test; 2. The waterproof sock layer is usually in the form of a sheet that needs to be partially joined and spliced ​​to form a sock structure. After the waterproof shoes are made and used, there is a possibility of leakage at the joints; 3. The dynamic waterproof test times of this sock-type waterproof shoe cannot be broken through, that is, the waterproof performance cannot be further improved; 4. The upper of the existing sock-type waterproof shoe is relatively thick, which is not suitable for the setting and application of some lightweight shoes; 5. The waterproof sock layer is usually in the form of a sheet that needs to be partially joined and spliced ​​to form a sock structure. After the waterproof shoes are made and used, there is a possibility of leakage at the joints; 6. The waterproof performance of the sock-type waterproof shoe cannot be further improved; 7. The upper of the existing sock-type waterproof shoe is relatively thick, which is not suitable for the setting and application of some lightweight shoes; 8. The waterproof sock-type waterproof shoe has many complicated production process steps, and it is difficult to improve the production efficiency and the production benefits of the enterprise.

[0004] In addition, with the development of science and technology and the research and development of new materials, some existing fabrics can also achieve waterproof effects through chemical processing. However, when such fabrics are used in shoes to make waterproof shoes, they are still not waterproof at the uppers and joints of the shoes, and cannot pass static or dynamic waterproof tests. Therefore, the above-mentioned structural method is still used to produce waterproof shoes.

[0005] In view of this, the inventor of this case has devoted himself to research and development, improvement, trial production, experimentation and testing to address the existing problems, which led to the creation of this case. Utility Model Content

[0006] The purpose of the utility model is to provide a new waterproof structure, which can effectively achieve waterproof penetration, thereby solving the existing problems of a waterproof shoe seam waterproof structure.

[0007] To achieve the above-mentioned purpose, the technical solution of the present invention is: a waterproof shoe seam waterproof structure, the waterproof shoe includes an upper with an upper mesh foot edge and a labrador lining having a lining edge joined to the upper mesh foot edge, and also includes a sole connected to the upper and the labrador lining bottom, a joint seam is provided between the upper mesh foot edge and the lining edge, the joint seam is connected to the upper and the labrador lining by hot melt adhesive melting, infiltration, filling, sealing, and infiltration and fusion; or, the upper has a splicing seam, and a joint seam is provided between the upper mesh foot edge and the lining edge, the splicing seam and the joint seam are connected to the upper and the labrador lining by hot melt adhesive melting, infiltration, filling, sealing, and infiltration and fusion.

[0008] The edges of the shoe upper and the laban bottom lining on both sides of the joint seam form a waterproof bonding edge, and the hot melt adhesive covers the waterproof bonding edge and penetrates into and melts to connect to the waterproof bonding edge; or, the edges of the shoe upper on both sides of the splicing seam form a waterproof bonding edge, and the hot melt adhesive covers the waterproof bonding edge and penetrates into and melts to connect to the waterproof bonding edge; or, the edges of the shoe upper and the laban bottom lining on both sides of the joint seam and the edges of the shoe upper on both sides of the splicing seam form a waterproof bonding edge, and the hot melt adhesive covers the waterproof bonding edge and penetrates into and melts to connect to the waterproof bonding edge.

[0009] The outer side of the shoe upper mesh foot edge and the labrador lining is further compounded with a compound layer of hot melt adhesive covered by corresponding joint seams.

[0010] A film layer is provided on one side of the composite layer facing the laban base liner.

[0011] The shoe upper is a water-repellent molecular waterproof shoe upper, and / or the laban backing is a waterproof laban backing.

[0012] By adopting the above technical solution, the beneficial effects of the present invention are as follows: the seams of waterproof shoes adopt the above structure, which has the following advantages over the prior art:

[0013] 1. There are no gaps in the seams, water will not penetrate, and the integrity of waterproof shoes will be better. It can not only easily meet the requirements of the testing standards, but also far exceed the current general testing standards of various countries.

[0014] 2. The upper can be made of new technological waterproof fabrics, which are not easy to break. Combined with the waterproof structure of the seams, the overall waterproof performance is greatly improved, which can achieve very ideal waterproof requirements.

[0015] 3. The structure and processing technology are simpler, the production and processing operations are easier, and the controllability is high, which can reduce the difficulty of waterproof shoe production and greatly simplify the entire production process of waterproof shoes.

[0016] 4. The membrane-free design has good air permeability, is environmentally friendly and harmless, and makes the shoes more comfortable to wear. There is no need to conduct waterproof testing of the components in advance.

[0017] 5. The waterproof shoes can be made lighter as a whole and can be applied to different types of waterproof shoes for people of different ages. The qualified rate of the products is high, which expands the range of waterproof shoes that can be realized.

[0018] 6. The simplified production process of the enterprise can save energy, reduce production costs, and greatly improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the expansion of the shoe upper in a waterproof shoe seam waterproof structure involved in the utility model;

[0020] Figure 2 This is a schematic diagram of the Laban bottom lining in a waterproof shoe joint waterproof structure involved in the utility model.

[0021] Figure 3 The utility model is a schematic diagram of a waterproof shoe seam waterproof structure.

[0022] In the picture:

[0023] Upper 1; upper mesh foot edge 11; splicing edge 12;

[0024] Labang base 2; base edge 21; joint seam 3;

[0025] Joint seam 4; hot melt adhesive 5; waterproof adhesive edge 6; composite layer 7. DETAILED DESCRIPTION

[0026] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0027] This embodiment discloses a waterproof shoe seam waterproof structure, such as Figure 1 、 Figure 2 and Figure 3As shown, the waterproof shoe comprises an upper 1 having a mesh foot edge 11, a lining 2 having a lining edge 21 joined to the upper mesh foot edge 11, and a sole (not shown) connected to the upper and the lining bottom. Since the sole component is not the primary improvement of the present invention, the sole structure will not be described in detail to avoid hindering a clear understanding of the technical solution by those skilled in the art. The upper 1 is placed on a suitable shoe last, and the lining 2 is sewn or sutured to the upper 1 to form a three-dimensional sock-like structure for the human foot to wear. Depending on the product design, this combination can be further processed to form a waterproof shoe product or a composite sole component to form sports shoes, casual shoes, and other footwear. Since this embodiment is a waterproof shoe product, the upper 1 can be made of an existing waterproof structure, or an upper made of some new technological waterproof fabrics, such as water-repellent molecular fabrics, which can achieve better waterproof performance and are suitable for upper applications. The laban base layer 2 can also be made of waterproof fabrics. The main improvement of this embodiment is the waterproof structure formed by some gaps formed by the upper 1 and the laban base lining 2 to form a three-dimensional upper structure.

[0028] The gaps formed by the three-dimensional upper structure formed by the fabric of the upper 1 usually include splicing seams 3 formed by the docking of the fabric sheet configurations. In addition, after the upper is configured, the bottom is enclosed to form a bottom opening, and the edge of the bottom opening is the upper mesh foot edge 11. A joint seam 4 is formed between the upper mesh foot edge 11 and the edge 21 of the lining. For some one-piece molded upper parts, there is no splicing seam 3, such as the upper products knitted in one piece by a knitting machine. As shown in the figure, the upper 1 is a sheet-like structure formed into the desired shape by splicing. After the configuration is completed, it includes a splicing seam 3 and a joint seam 4. There is a joint seam between the upper mesh foot edge and the edge of the lining. In the following description, the waterproof structure with two seams is described. If it is an upper structure without a splicing seam 3, it is relative to the waterproof structure with only a joint seam 4 shown in the figure.

[0029] As shown in the figure, the upper 1 has a splicing seam 3, and a joint seam 4 is provided between the upper mesh foot edge 11 and the lining edge 21. After the splicing or joining sewing or stitching is completed, water can directly penetrate into these seams. Therefore, waterproof processing is required for waterproof shoes. The waterproof structure of this embodiment is such that the splicing seam 3 and the joint seam 4 are melted, infiltrated, filled and sealed by hot melt adhesive 5 and are infiltrated and melted to connect to the upper 1 or the upper 1 and the laban lining 2. The hot melt adhesive 5 has the characteristics of being liquefied by heating, being able to better penetrate small holes, fill and seal gaps, and being able to better penetrate the fabric and melt and solidify, that is, it can be stably connected to the upper 1 or the upper 1 and the laban lining 2, including the intersection of the splicing seam 3 and the joint seam 4. The hot melt adhesive 5 of the splicing seam 3 and the joint seam 4 can also be melted, infiltrated, filled and sealed into the intersection. According to experimental tests, the hot melt adhesive 5 should preferably be a low-temperature hot melt adhesive, which is easy to carry out the waterproof structure operation and processing process, and can avoid conflicts with other production processes and the molding processing of other shoe parts during the production process. Preferably, the hot melt adhesive 5 is a low-temperature hot melt adhesive with a melting point of 50-100 degrees.

[0030] In this embodiment, in order to improve the structural stability of the waterproof structure and improve the testability of the waterproof effect, the edges of the upper 1 and the laban base 2 on both sides of the joint seam 4 and the edges of the upper 1 on both sides of the splicing seam 3 form a waterproof bonding edge 6, and the hot melt adhesive 5 covers the waterproof bonding edge 6 and penetrates into the fusion connection on the waterproof bonding edge 6. In this way, the hot melt adhesive 5 is extended to cover the waterproof bonding edge 6 to increase the fusion connection area, thereby effectively improving the structural stability of the waterproof structure. Under the condition of structural stability, the testability of its waterproof effect can naturally be improved.

[0031] This embodiment further features a composite layer 7 covering the hot-melt adhesive 5, specifically covering the corresponding seams. This composite layer 7 prevents the hot-melt adhesive 5 from adhering to impurities during production and processing, further facilitating subsequent waterproof shoe production operations and ensuring the stability and durability of the overall shoe structure. To facilitate smooth and secure bonding, a film layer can be provided on the side of the composite layer 7 facing the laban backing 2. This film layer can be a low-temperature non-woven film with a melting point of 50-100°C. This heat-melt-pressing and bonding process can be performed simultaneously with the hot-melt adhesive 5. Other materials that achieve the desired effect can also be used instead.

[0032] The remaining structural elements of the waterproof shoe are not improvements of this invention and will not be described in detail here. The lack of disclosure of these structural elements will not affect the clear understanding of this technical solution by those skilled in the art. The beneficial effects of the above structural arrangement and its advantages over existing structures are described in the beneficial effects section above and will not be elaborated on here.

[0033] The following discloses a waterproof treatment process for waterproof shoe seams provided by the waterproof structure of the utility model. The treatment process steps are as follows:

[0034] S1, along the upper mesh edge 11 of the upper 1 and the splicing edge 12 of the upper 1 in the waterproof section (the waterproof section to be set according to needs, such as Figure 1 As shown in the figure, a small section at the end of the splicing edge 12 does not need to be waterproofed, and the other parts are the sections that need to be waterproofed) are connected and provided with a hot melt adhesive strip 5 (which can be sewn, bundled, etc.), and a hot melt adhesive strip 5 is connected and provided along the edge 21 of the base lining of the Labang base lining 2.

[0035] In this step, after the analysis of the trial production test data, it is preferred that the thickness of the hot melt adhesive strip 5 bundled along the upper mesh foot edge 11 and / or the splicing edge 12 of the upper 1 is 10-150 filaments (for example, in the test, the thickness of the hot melt adhesive strip 5 can meet the required requirements according to the thickness of the upper and will not cause redundancy), and the width is 0.5-2.0 cm. The thickness of the hot melt adhesive strip along the lining edge of the laban lining is 10-150 filaments and the width is 0.5-2.0 cm. It can achieve the required and ideal infiltration, filling, sealing and melting effect as well as the stability of the melting connection area. Too wide and too thick may cause waste of material and redundant production of waterproof shoes. In addition, the hot melt adhesive strip should preferably be a low-temperature hot melt adhesive strip with a melting point of 50-100 degrees, which is easy to carry out the waterproof structure operation and processing process, and can avoid conflicts with other production processes and the molding and processing of other shoe parts during the production process.

[0036] S2. Splice and connect the splicing edges 12 of the upper 1 (such as sewing) to form a splicing seam, and join the upper mesh edge 11 of the upper 1 with the lining edge 21 of the laban base 2 (laban stitching) to form a joining seam (if there is no splicing edge that needs to be spliced ​​in practice, only join the upper mesh edge of the upper and the lining edge of the laban base to form a joining seam), thereby obtaining a three-dimensional upper.

[0037] S3. Place the three-dimensional upper surface of the shoe last in a suitable device (such as a molding oven) for baking, so that the hot melt adhesive strip on it is in a melted state.

[0038] S4. Place the three-dimensional upper with the hot-melt adhesive strip in a melted state in a suitable device (a cover-type press or a wall-type press) for pressing, so that the melted hot-melt adhesive strip can penetrate, fill, and seal the joint seam after the splicing is completed and can penetrate and combine with the upper; or the melted hot-melt adhesive strip can penetrate, fill, and seal the joint seam and can penetrate and combine with the upper and the laban base lining; or the melted hot-melt adhesive strip can penetrate, fill, and seal the joint seam and can penetrate and combine with the upper and the laban base lining; the hot-melt adhesive strip can also be flattened between the upper and the laban base lining to obtain a shaped upper.

[0039] Through the above steps, a waterproof upper with seams and joints that are well resistant to water penetration can be obtained. To further improve the waterproof structure of the upper and product quality and facilitate the production process, this embodiment may further include the following steps S5 and S6 after step S4, specifically:

[0040] S5. Cover the outer bottom surface of the shaped shoe upper with a film composite layer in a manner that at least covers the joint seam and the edge areas on both sides thereof. Place the shaped shoe upper covered with the film composite layer in a suitable device for heating and activation, so that the hot melt adhesive on the shaped shoe upper and the adhesive of the film composite layer are melted and combined together to obtain a composite shaped shoe upper; the film composite layer in this embodiment is a low-temperature non-woven film with a melting point of 50-100 degrees.

[0041] S6. Place the composite shaped upper in a suitable device (cover-type press or wall-type press) for pressing, which can better connect the film composite layer with the shaped upper, make the film composite layer more flatly laminated on the bottom surface of the shaped upper, and flatten the hot melt adhesive on the composite shaped upper.

[0042] The operation time from placing the shaped shoe upper covered with the film composite layer in a suitable device for heating and activation in step S5 to completing step S6 should be within 8 seconds to ensure that the hot melt adhesive in all parts is still in the melting stage during pressing, so as to be able to perform a more ideal pressing operation and perform secondary reinforcement on the above-mentioned infiltration, filling and sealing gaps.

[0043] In summary, in addition to the beneficial effects mentioned in the above beneficial effects section, the above-mentioned waterproof shoe seam waterproofing treatment process also has the following advantages: 1. Simple operation; 2. Greatly reduces and delays the risk and time of water leaking into the shoe cavity from the material interlayer after the shoe is affixed to the sole; 3. After the low-temperature hot melt adhesive is molded and heated for activation, it can well weld the seams and seal the gaps between the materials.

[0044] The utility model discloses a waterproof shoe seam waterproof structure and waterproof shoe seam waterproof treatment process, which takes the sockless waterproof process to a new level compared to the existing technology, and the entire process can be visually inspected for its effect, ensuring the qualified rate of the finished shoes. The dynamic waterproof shoes produced by traditional technology are complex and have low performance. It is difficult to significantly exceed 25,000 times in the dynamic waterproof test. The structural molding process of the utility model is combined with the waterproof upper fabric of new scientific and technological materials to effectively improve the detection value and improve production efficiency. The existing sock-type dynamic waterproof shoe molding line with a normal configuration can only produce about 1,500 pairs of finished products, while the technical solution of the utility model can produce more than 2,200 pairs on the molding production line with the same number of people. It also increases the number of dynamic detections. The number of dynamic waterproof tests can generally reach more than 50,000 times, and many shoes with different structures can reach more than 100,000 dynamic tests.

[0045] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A waterproof shoe seam waterproof structure, comprising an upper with a mesh foot edge and a labrador lining having a lining edge joined to the upper mesh foot edge, and further comprising a sole connected to the upper and the labrador lining bottom, characterized in that: A joint is provided between the edge of the upper mesh and the edge of the lining, and the joint is sealed by hot melt adhesive that is melted, infiltrated, filled, and sealed, and then melted and connected to the upper and the laban lining; Alternatively, the shoe upper has a splicing seam, and a joining seam is provided between the shoe upper mesh foot edge and the lining edge. The splicing seam and the joining seam are sealed by hot melt adhesive and are connected to the shoe upper and the laban lining through infiltration and fusion.

2. A waterproof shoe seam waterproof structure according to claim 1, characterized in that: The edges of the shoe upper and the laban bottom lining on both sides of the joint seam form a waterproof bonding edge, and the hot melt adhesive covers the waterproof bonding edge and penetrates into and melts to connect to the waterproof bonding edge; or, the edges of the shoe upper on both sides of the splicing seam form a waterproof bonding edge, and the hot melt adhesive covers the waterproof bonding edge and penetrates into and melts to connect to the waterproof bonding edge; or, the edges of the shoe upper and the laban bottom lining on both sides of the joint seam and the edges of the shoe upper on both sides of the splicing seam form a waterproof bonding edge, and the hot melt adhesive covers the waterproof bonding edge and penetrates into and melts to connect to the waterproof bonding edge.

3. A waterproof shoe seam waterproof structure according to claim 1 or 2, characterized in that: The outer side of the shoe upper mesh foot edge and the labrador lining is further compounded with a compound layer of hot melt adhesive covered by corresponding joint seams.

4. A waterproof shoe seam waterproof structure according to claim 3, characterized in that: A film layer is provided on one side of the composite layer facing the laban base liner.

5. A waterproof shoe seam waterproof structure according to claim 1 or 2, characterized in that: The shoe upper is a water-repellent molecular waterproof shoe upper, and / or the laban backing is a waterproof laban backing.

6. A waterproof shoe seam waterproof structure according to claim 4, characterized in that: The shoe upper is a water-repellent molecular waterproof shoe upper, and / or the laban backing is a waterproof laban backing.

Images