A method for manufacturing hidden waterproof shoes

Abstract

The present invention provides a method for manufacturing concealed waterproof shoes with a simple structure and comprehensive waterproofing. The method includes the following steps: Step 1: treating the upper material, eyelets, tongue piece, and other upper materials with an anti-siphoning treatment, and then cutting the upper material according to the upper shape; Step 2: fixing the eyelets, tongue piece, and cut upper material to form the upper; Step 3: hot-pressing a waterproof membrane between the lining of the upper and the upper; Step 4: sewing the ends of the upper and waterproofing the seams; Step 5: applying a lacing midsole to the upper and sealing the bottom of the upper; Step 6: marking the bottom of the upper, applying a lacing treatment agent, and then baking in an oven. Applying waterproof glue to the sole ensures a sealed sole; Step 7: activating a midsole gasket made of a hot-melt adhesive film to soften and make it sticky, and then attaching it to the lacing midsole to seal the seams. Step 8: Laminating the upper and sole to form the shoe.

Description

Technical Field

[0001] The present invention relates to the technical field of fabric technology, and in particular to a method for manufacturing hidden waterproof shoes. Background Art

[0002] Shoes are items worn on the feet to protect the feet from injury. In the early history of human civilization, most of them were straw sandals and cloth shoes. Nowadays, leather shoes and sports shoes are more common. They are made of leather, cloth, wood, grass, plastic thread, etc., and are items worn on the feet and touched the ground when walking. They are indispensable daily necessities for humans.

[0003] Shoes are essential daily necessities for people. People need shoes to protect their feet when walking. However, existing shoes are not waterproof, which makes it easy for water to seep into the shoes when people wear them in rainy days, reducing the comfort of wearing the shoes and thus reducing the practicality of the shoes.

[0004] The present invention has been developed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to address the defects and shortcomings of the existing technology and provide a method for manufacturing a hidden waterproof shoe with a simple structure and comprehensive waterproof function.

[0006] To achieve the above object, the present invention adopts the following technical solution: a method for manufacturing hidden waterproof shoes, comprising the following steps:

[0007] Step 1: Perform anti-siphon treatment on the upper material, eyelets, tongue and other upper materials to make them waterproof, and cut the upper material according to the upper shape;

[0008] Step 2: Fix the eyelets, tongue and upper material after cutting;

[0009] Step 3: Hot press a waterproof membrane between the lining and the upper material;

[0010] Step 4: Use waterproof thread to sew the two ends of the pressed upper, shape the upper front and back, and waterproof the seams;

[0011] Step 5: Lace up the midsole of the shoe upper, seal the bottom of the shoe upper, and then put the shoe upper into the shoe last to make the midsole flat;

[0012] Step 6: Mark the bottom of the shoe upper, apply the shoe upper treatment agent, then bake it in the baking oven, and apply waterproof glue on the sole to ensure the sealing of the sole;

[0013] Step 7: Activate the midsole gasket made of hot melt adhesive film to make it softened and sticky, then attach it to the pull-up midsole and seal the seams.

[0014] Step 8: Press the upper and sole together to form the shoe.

[0015] A further improvement is that the upper material and the eyelets are hot-pressed with an outer layer of water-insulating material that enhances the waterproofness of the upper and facilitates printing patterns on the upper.

[0016] A further improvement is that in step 2, the front half of the tongue piece is first sewn and fixed to the eyelet piece, and then the eyelet piece is sewn and fixed along the edge of the shoe opening so that the eyelet piece is fixed to the upper, and then the upper and the eyelet piece are hot pressed.

[0017] A further improvement is that: when the eyelet piece and the upper material are fixed by hot pressing, an isolation paper lining the eyelet piece is used to separate the inner end of the eyelet piece from the pressing of the upper material, so that the outer end of the eyelet piece is adhered to the upper material and the inner end is a free end, so that the inner end of the eyelet piece can be opened for hot pressing of the waterproof membrane.

[0018] A further improvement is that the upper and the waterproof membrane are pressed together by a hot melt adhesive film, and the upper lining and the waterproof membrane are pressed together by a hot melt adhesive film, and the hot melt adhesive film used has air holes to increase the air permeability of the upper.

[0019] Further improvements are: the upper material is gradually retracted 10mm-15mm around the upper foot, and the outer waterproof material is pressed flush with the inner lining of the upper covered with a waterproof membrane to seal the upper material so that the drawstring does not contact the upper material, ensuring that water cannot enter the shoe cavity from the upper.

[0020] A further improvement is that the upper and the eyelet are hot-pressed by a fusion hot press, and two pressing steps are performed during the hot pressing process, the first pressing step is without pressing, and the second pressing step is with pressing.

[0021] A further improvement is that the tongue and the upper are hot-pressed by a fusion hot press, and two pressing steps are performed during the hot pressing process, the first time without pressurization and the second time with pressurization.

[0022] A further improvement is that the outer layer water-proof material is a PP film.

[0023] After adopting the above technical solution, the beneficial effects of the present invention are:

[0024] The result is simple, and the shoes have waterproof function. Through this process, the upper of the shoe is fully waterproofed, so that the upper as a whole has waterproof function, thereby making the shoe as a whole have waterproof function. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1Schematic diagram of the structure of the shoe upper according to an embodiment of the present invention.

[0026] Figure 2 Schematic diagram of the structure of the upper material of an embodiment of the present invention.

[0027] Figure 3 Schematic diagram of the structure of the inward-shrinking upper material according to an embodiment of the present invention.

[0028] Figure 4 Schematic diagram of the structure of the inward-shrinking upper material according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The following embodiments are further described in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0030] like Figure 1-4 As shown, a method for manufacturing hidden waterproof shoes includes the following steps:

[0031] Step 1: Perform anti-siphon treatment on the upper material 1, the eyelet piece 7, the tongue 6 and other upper materials to make them waterproof, and cut the upper material 1 according to the shape of the upper 11.

[0032] Step 2: Fix the eyelets 7, the tongue 6 and the cut upper material 1.

[0033] Specifically, refer to Figure 2 First, the front half of the tongue 6 is sewn and fixed to the eyelet piece 7, and then the eyelet piece 7 is sewn and fixed along the inner edge of the shoe opening. In other words, the eyelet piece 7 is sewn inwardly so that the eyelet piece 7 is fixed to the upper material 1. Then, the upper material 1 and the eyelet piece 7 are heat-pressed to form a whole. The front half of the tongue 6 is sewn and fixed to the eyelet piece 7, and then the eyelet piece 7 is sewn inwardly so that the tongue 6 and the eyelet piece 7 are combined into a whole. The rear end of the tongue 6 can be freely folded, so that the tongue 6 can be adjusted when wearing. It also prevents water from flowing directly into the interior of the shoe upper 11 when it flows through the shoe opening. Water can only flow into the interior of the shoe if it submerges the sewn fixing point of the tongue 6 and the eyelet piece 7, which is beneficial to waterproofing the interior of the shoe.

[0034] Step 3: A layer of breathable waterproof membrane 2 is laminated to the upper lining 3 and the upper material 1 using suction-pressure fusing technology. The breathable waterproof membrane 2 covers the entire upper 11. A hot-melt adhesive film 4 is laminated between the upper material 1 and the breathable waterproof membrane 2, and between the upper lining and the breathable waterproof membrane 2. This ensures that the upper material 1, the breathable waterproof membrane 2, and the upper lining 3 are all bonded to each other using hot-melt adhesive 4, ensuring a thermally bonded upper 11. The hot-melt adhesive film 4 has air holes, thereby enhancing the breathability of the upper 11.

[0035] During the suction-pressure fusing of the waterproof membrane, the suction-pressure fusing upper mold temperature is 235°C, and the lower mold temperature is 135°C. A cold press is then performed for 15 seconds to flatten the upper 11, without applying pressure. A first hot press is then performed for 28 seconds to remove wrinkles from the upper 11, without applying pressure. A second press is then performed for 20 seconds to securely bond the upper 11, the waterproof membrane, and the inner lining of the upper 11. The press is then applied at a pressure of 5 kg.

[0036] Step 4: Use waterproof thread to sew the two ends of the upper 11 to shape the upper 11 front and back, and affix waterproof strips to the stitching of the upper 11 for waterproofing.

[0037] Step 5: Lace up the midsole of the upper 11, seal the bottom of the upper 11, and then put the upper 11 into the shoe last to make it flat;

[0038] Step 6: Mark the bottom of the upper 11, apply the upper 11 treatment agent to make the upper 11 better bonded to the sole, then bake in a 65°C oven, and apply waterproof glue on the sole to ensure the sealing of the sole.

[0039] Step 7: Activate the midsole gasket 5 made of the hot melt adhesive film 4 to soften it and make it sticky, then attach it to the midsole and seal the seams to further ensure the sealing of the sole.

[0040] Step 8: Press the upper 11 and the sole together to form the shoe.

[0041] In order to facilitate pattern printing on the upper 11 and to further achieve waterproofing, the upper 11 and the eyelet piece 7 are hot-pressed with a layer of PP film 8 to enhance the waterproofness of the upper 11 and facilitate pattern printing on the upper 11.

[0042] refer to Figure 3-4To further ensure comprehensive waterproofing and prevent water from seeping into the upper material 1 through the stitching holes during the lasting process, and then into the shoe's interior, the upper material 1 is gradually retracted 10-15 mm around the circumference of the shoe's foot. The PP film 8 is then flush-pressed against the upper lining 3, which is covered with a breathable waterproof membrane 2. This seals the upper material 1, preventing the lasting line from contacting the upper material 1 and preventing water from entering the shoe's interior. This indentation of the upper material 1 creates space for sewing, allowing the lasting stitches to be sewn where the PP film 8 and the upper lining 3 are pressed together, thus sealing the upper material 1 within the PP film 8 and the upper lining 3. Because the PP film 8 is waterproof and the upper lining 3 is also hot-pressed with a breathable waterproof membrane, the entire upper circumference is sealed, preventing water from seeping into the upper material 1 from the lasting line and then entering the shoe's interior.

[0043] In order to facilitate the waterproofing of the eyelet piece 7 and further make the shoe as a whole waterproof, the eyelet piece 7 and the upper material 1 are fixed by hot pressing with an inner eyelet lining paper to separate the inner end of the eyelet piece 7 from the upper material 1. This allows the outer end of the eyelet piece 7 to be fixed to the upper material 1 and the inner end to be free, so that the inner end of the eyelet piece 7 can be opened for hot pressing of the waterproof membrane. The inner eyelet lining paper can prevent the inner end of the eyelet piece 7 from being adhered to the upper material 1 during the hot pressing of the eyelet piece 7 and the upper material 1. When the breathable waterproof membrane 2 is pressed, the inner eyelet lining paper can be directly removed, and then the eyelet piece 7 can be opened, and the breathable waterproof membrane 2 can be covered and pressed. In this way, the upper material 1 and the eyelet piece 7 can play a waterproof role, making the upper 11 further waterproof as a whole.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention as claimed. The scope of protection claimed is defined by the appended claims and their equivalents. Any details not described in detail herein are well known to those skilled in the art.

Claims

1. A method for manufacturing hidden waterproof shoes, characterized in that: The following steps are involved: Step 1: Perform anti-siphon treatment on the upper material, eyelets, and tongue to make them waterproof, and cut the upper material according to the upper shape; Step 2: Fix the eyelets, tongue and upper material after cutting; Step 3: Hot press a waterproof membrane between the lining and the upper material; Step 4: Use waterproof thread to sew the two ends of the pressed upper, shape the upper front and back, and waterproof the seams; Step 5: Lace up the midsole of the shoe upper, seal the bottom of the shoe upper, and then put the shoe upper into the shoe last to make the midsole flat; Step 6: Mark the bottom of the shoe upper, apply the shoe upper treatment agent, then bake it in the baking oven, and apply waterproof glue on the sole to ensure the sealing of the sole; Step 7: Activate the midsole gasket made of hot melt adhesive film to soften it and make it sticky, then attach it to the midsole and seal the seams; Step 8: Press the upper and the sole together to form the shoe; The upper material and the eyelets are hot-pressed with an outer layer of water-insulating material that enhances the waterproofness of the upper and facilitates the printing of patterns on the upper; When the eyelet piece and the upper material are fixed by hot pressing, the inner end of the eyelet piece and the upper material are separated by the eyelet lining isolation paper, so that the outer end of the eyelet piece is fixed to the upper material and the inner end is free, so that the inner end of the eyelet piece can be opened for hot pressing of the waterproof film; The shoe upper and the waterproof membrane are pressed together by a hot melt adhesive film, and the shoe lining and the waterproof membrane are pressed together by a hot melt adhesive film. The hot melt adhesive film used has air holes to increase the air permeability of the shoe upper. The upper material is gradually retracted by 10mm-15mm around the upper foot. The outer waterproof material is pressed flush with the inner lining of the upper covered with a waterproof membrane to seal the upper material so that the draw line does not contact the upper material, ensuring that water cannot enter the shoe cavity from the upper.

2. The method for manufacturing concealed waterproof shoes according to claim 1, characterized in that: In the second step, the front half of the tongue piece is first sewn and fixed to the eyelet piece, and then the eyelet piece is sewn and fixed along the edge of the shoe opening so that the eyelet piece is fixed to the upper, and then the upper and the eyelet piece are hot pressed.

3. The method for manufacturing concealed waterproof shoes according to claim 1, characterized in that: The shoe upper and the shoe eyelet are hot-pressed by a fusion hot press, and two pressing steps are performed during the hot pressing process, the first pressing step is without pressing, and the second pressing step is with pressing.

4. The method for manufacturing concealed waterproof shoes according to claim 1, characterized in that: The tongue and upper are hot pressed by a fusion hot press, and two pressing processes are used: the first pressing is without pressure, and the second pressing is with pressure.

5. The method for manufacturing concealed waterproof shoes according to claim 1, characterized in that: The outer layer water-proof material is a PP film.

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