[0038] The present invention will be further described in detail below in conjunction with the drawings.
[0039] Figure 5 to Figure 9 The waterproof shoe according to an embodiment of the present invention is schematically shown. As shown in the figure, the device includes a sole 1 and a shoe body 2 fixed to the upper part of the sole 1.
[0040] Among them, the shoe body 2 is mainly composed of a waterproof shoe cover 3 and an inner lining 4.
[0041] The waterproof shoe cover 3 is composed of two or more waterproof material sheets 3a.
[0042] The waterproof material sheet 3a is composed of a waterproof membrane 32, a surface layer 31 and a nylon mesh layer 33 attached to both sides of the waterproof membrane 32, respectively.
[0043] Two or more waterproof material sheets 3a are spliced into a three-dimensional shoe cover by stitching outwards.
[0044] A professional waterproof tape 5 is also pasted at the joint between the two waterproof material sheets 3a.
[0045] The professional waterproof tape 5 is used to seal the seam between the two waterproof material sheets 3a and the needle holes of the sewing machine, so that the waterproof shoe cover 3 is completely closed except for the shoe opening 9 provided on the top, which is suitable for foot penetration.
[0046] The inner lining 4 is adapted to the inside of the waterproof shoe cover 3.
[0047] The inner layer 4 is attached to the inner side of the waterproof shoe cover 3 and is fixedly connected with the waterproof shoe cover 3 at the shoe mouth 9 by stitching.
[0048] The surface layer 31 and the inner inner layer 4 are cloth or leather, and the waterproof membrane is a polyester polyether waterproof and moisture-permeable membrane, a polytetrafluoroethylene waterproof and breathable membrane or a PU hydrophilic membrane.
[0049] Optimally, the surface layer 31 is cloth, cowhide or PU leather, and the inner layer 4 is cloth, pigskin, sheepskin, or PU leather.
[0050] The outer surface of the surface layer 31 can also be beautified and decorated or added with other functions by means of transfer printing, heat cutting, or connecting additional accessories.
[0051] In order to maintain the moisture permeability and waterproof performance of the finished material, the three layers of the waterproof material sheet 3a are glued together in dots with hot melt glue.
[0052] The professional waterproof tape 5 is stuck on the inner side of the waterproof shoe cover 3. The professional waterproof tape 5 adheres to the nylon mesh layer 33 and the waterproof membrane 32 more firmly, and there is no other material in between, and the sealing performance is better.
[0053] The waterproof shoes adopting the above technical solutions are more breathable because the waterproof membrane 32 is directly attached to the back of the surface layer 31, and water cannot enter the interlayer space between the waterproof shoe cover 3 and the inner layer 4 during the wearing process, and the shoes will not become heavy and the temperature Will not frostbite the feet after a sudden drop. The entire waterproof shoe cover 3 is sealed by stitching and professional waterproof tape 5, and the same material is used, so the joint is very flat, and the sealing performance of the professional waterproof tape 5 is recognized as safe, so the bottom of the shoe body Water resistance is very stable. Furthermore, the entire sealed waterproof shoe cover 3 can be tested, and it can be repaired if any leakage is found, so that any defective products can be prevented from making finished products.
[0054] The manufacturing method of waterproof shoes of the present invention includes the following steps:
[0055] (1) The waterproof membrane 32 is attached to the nylon mesh 33 first, and then attached to the back of the surface layer 31. The three layers of materials are combined with hot melt adhesive dots. From the outside to the inside, the surface layer 31, the waterproof membrane 32 and Nylon mesh 33;
[0056] (2) Cut the above three layers of materials into waterproof material sheets 3a according to the paper plate design;
[0057] (3) Two or more waterproof material sheets 3a are stitched together to form a three-dimensional outer shoe upper by stitching;
[0058] (4) Paste professional waterproof tape 5 on the back of all splicing positions, and seal it with a professional hot air blower to seal and waterproof the entire outer shoe upper, the inner and outer sides, and the front and back sides;
[0059] (5) According to the size of the bottom of the last, take the corresponding waterproof material sheet 3a as the bottom part, and join it with the lower edge of the outer shoe upper using universal stitching to form the waterproof shoe cover 3, and The joint is sealed with a professional hot air blower and professional waterproof tape 5 to seal the stitching hole, making the entire waterproof shoe cover 3 a 100% waterproof sealing structure except for the shoe mouth 9;
[0060] (5) Test the completed waterproof shoe cover 3 with water or air to ensure that the waterproof membrane is not damaged in the previous production process, and to ensure that the waterproof tape 5 completely seals the stitching position 100% , No leakage;
[0061] (6) Take an inner layer 4, insert it into the waterproof shoe cover 3, and fix it with stitching and glue to form a complete shoe body 2;
[0062] (7) Fix the above-mentioned shoe body 2 with the matching shoe sole 1.
[0063] In this embodiment, the waterproof shoe cover 3 uses an inflatable test device to test its tightness.
[0064] The detection conditions of the inflation test equipment are: the temperature is 25° C. to 35° C., the inflation pressure is 1.5 psi, and the waterproof shoe cover is inflated for 8-10 seconds under the above test conditions and placed in water without bubbles leaking.
[0065] When the waterproof shoe cover 3 fails the test, use a professional hot air blower and a professional waterproof tape 5 to seal the leak.
[0066] What has been described above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention.
