Waterproof and breathable fabric for shoe upper, processing method thereof, and acupuncture device for processing the fabric

Abstract

The present invention discloses a waterproof, breathable fabric for a shoe upper, a processing method, and a needle-punching device. The fabric includes a breathable surface layer and a breathable lining. The inner side of the breathable surface layer is coated with a liquid rubber coating. The composite layer of the breathable surface layer and the liquid rubber coating is punctured from the inside out to form densely distributed, quasi-conical micropores. The cross-sectional area of the quasi-conical micropores gradually decreases from the inside out. The breathable surface layer with the liquid rubber coating and the breathable lining are bonded together using glue. Because the quasi-conical micropores are formed in the liquid rubber coating, the quasi-conical micropores are naturally closed under the elastic compression of the liquid rubber coating. Only when the waterproof, breathable fabric for the shoe upper is made into clothing or shoe fabric does the internal gas expand and exert pressure on the inner openings of the quasi-conical micropores. The pressure generated at the quasi-conical micropores is transmitted to the front end, forming a strong air pressure, which opens the front end of the quasi-conical micropores. Otherwise, liquid cannot enter through the front end of the quasi-conical micropores, thus achieving a highly effective waterproof and breathable effect.

Description

Technical Field

[0001] The invention relates to a waterproof and breathable fabric for a shoe upper, a processing method thereof, and a needle punching device for processing the fabric. Background Art

[0002] Patent publication number CN112297575A discloses a waterproof, breathable fabric for a shoe upper and a method for preparing the same. The waterproof, breathable fabric for the shoe upper comprises an inner layer and an outer layer, wherein the inner layer is a chemical fiber blended fabric and the outer layer is a breathable fabric. The inner and outer layers are bonded together using an adhesive, and the yarns of the outer layer are treated with a waterproof, breathable coating. The waterproof, breathable coating is prepared from polyethylene oxide, mica powder, and magnesium lauryl sulfate. The method for preparing the waterproof, breathable fabric for the shoe upper comprises the following steps: treating the breathable fabric with the waterproof, breathable coating, then thinly coating one side of the chemical fiber blended fabric with an adhesive, and hot-melt-bonding the breathable fabric and the chemical fiber blended fabric using a hot-melt device. The fabric of this application also has high waterproof and breathable properties. The waterproof, breathable fabric for the shoe upper primarily relies on the outer layer's yarns being treated with a waterproof, breathable coating to achieve its waterproof and breathable properties. However, the air permeability of the waterproof, breathable fabric for the shoe upper is low, and it cannot block most moisture from entering during heavy rainfall. Summary of the Invention

[0003] In view of the shortcomings of the background technology, the technical problem to be solved by the present invention is to provide a waterproof and breathable fabric for shoe uppers with greater air permeability and better waterproof effect. The technical problem to be solved by the present invention also includes providing a processing method for the waterproof and breathable fabric for shoe uppers.

[0004] To this end, the present invention is achieved by adopting the following technical solutions:

[0005] Preferably, the waterproof and breathable fabric for the upper comprises a breathable surface layer and a breathable lining, and is characterized in that: the inner side of the breathable surface layer is coated with a liquid rubber coating, and the composite layer of the breathable surface layer and the liquid rubber coating is punctured from the inside out to form densely distributed conical micropores, the cross-sectional area of the conical micropores gradually decreases from the inside out, and the breathable surface layer with the liquid rubber coating and the breathable lining are bonded with glue, wherein the liquid rubber coating and the breathable lining are bonded.

[0006] Preferably, the cone-like micropores are conical holes.

[0007] Preferably, the cone-like micropores are polygonal pyramidal pores.

[0008] Preferably, the breathable lining is a thin layer of waterproof and breathable fabric for the upper surface.

[0009] Preferably, the breathable lining is formed by blending spandex and polyester and impregnating with waterproof material.

[0010] Preferably, the conical microhole includes a conical portion at the front and an expansion portion at the rear, and the expansion portion opens in an arc shape backward.

[0011] Preferably, the angle of the lower end of the cone axis section of the cone-shaped micropore is 20°-30°, and the height of the cone-shaped micropore is 0.8-1.2 cm.

[0012] Preferably, the angle of the lower end of the cone axis section of the cone-like microhole is 28°, and the height of the cone-like microhole is 1 cm.

[0013] The present invention provides a method for processing the above-mentioned waterproof and breathable fabric for the upper surface, comprising the following steps:

[0014] First, a coating mechanism is used to apply a liquid rubber coating on the inner side of the breathable surface fabric, and the liquid rubber coating is allowed to solidify and stabilize;

[0015] Secondly, a needle is used to pierce downward from the liquid rubber coating to form cone-shaped micropores;

[0016] Then, turn the breathable surface fabric over, apply glue on the liquid rubber coating, and adhere it to the breathable lining fabric;

[0017] Finally, wait to dry or tumble dry.

[0018] The present invention provides a needle puncture device for processing the above-mentioned waterproof and breathable fabric of the shoe upper, comprising a base body with a puncture needle head, the front end of the puncture needle head being a conical portion matching the said conical micropore, the rear end being an arc-shaped enlarged portion matching the said expansion portion, and the said arc-shaped enlarged portion being fixed on the said base body.

[0019] After adopting the above technical solution, the beneficial effects are as follows:

[0020] Because the conical micropores are created within the liquid rubber coating, they remain closed in their natural state due to the elastic compression of the liquid rubber coating. Only when the upper is made of waterproof, breathable fabric does the internal gas, squeezed or heated to expand, exert pressure on the inner openings of the conical micropores. This pressure is then transmitted to the front, creating a strong air pressure. This pressure forces the front of the conical micropores to open, allowing the gas inside to escape. Conversely, liquid cannot enter through the front of the conical micropores, resulting in highly effective waterproof and breathable properties and greater air displacement.

[0021] The conical micropores opened in the liquid rubber coating of this application have better waterproof effect for larger rainfall, but the addition of breathable lining is required to prevent water penetration. The breathable lining in this application is a thin layer of waterproof and breathable fabric for the upper surface. The waterproof and breathable fabric for the upper surface is formed by impregnation with a waterproof agent with a self-developed formula and a self-developed method, which can better prevent water from entering, thereby forming two waterproof and breathable layers inside and outside, achieving better waterproof effect while maintaining a larger exhaust volume.

[0022] The applied-for conical micropore includes a conical portion in the front and an expansion portion in the rear. The expansion portion opens in an arc shape backward, and the diameter of the expansion portion is larger than the diameter of the corresponding position of the backward extension of the conical portion. This structure is conducive to forming a larger pressure difference from the inner end to the outer end, thereby increasing the pressure to discharge the internal gas.

[0023] The angle of the lower end of the conical axis section of the conical micropore is 20°-30°, and the height of the conical micropore is 0.8-1.2 cm. This structure is conducive to ensuring that the formed conical micropores maintain both good exhaust effect and good waterproof effect. In particular, the effect is best when the angle of the lower end of the conical axis section of the rotating conical micropore is 28° and the height is 1 cm. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention has the following accompanying drawings:

[0025] Figure 1 This is a schematic structural plan view of the waterproof and breathable fabric for the upper surface of the shoe provided by the present invention.

[0026] Figure 2 for Figure 1 A local enlarged schematic diagram of point A in the figure.

[0027] Figure 3 for Figure 2 An enlarged schematic diagram of the local structure section.

[0028] Figure 4 It is a partial enlarged side view of the acupuncture device.

[0029] Figure 5 This is an enlarged schematic cross-sectional view of the local structure of the waterproof and breathable fabric for the upper provided in Example 2 of the present invention. DETAILED DESCRIPTION

[0030] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0031] Reference Figure 1-4As shown, the waterproof and breathable fabric for the upper provided in the first embodiment of the present invention includes a breathable surface layer 1 and a breathable lining 2. The inner side of the breathable surface layer 1 is coated with a liquid rubber coating 3. The composite layer of the breathable surface layer 1 and the liquid rubber coating 3 is punctured from the inside to the outside to form densely distributed conical micropores 4. The cross-sectional area of the conical micropores 4 gradually decreases from the inside to the outside. The conical micropores 4 in this embodiment are conical holes. The breathable surface layer 1 with the liquid rubber coating 3 and the breathable lining 2 are bonded by glue, wherein the liquid rubber coating 3 and the breathable lining 2 are bonded.

[0032] As shown in the figure, in order to improve the anti-seepage performance and maintain good breathability, the breathable lining 2 is a thin layer of waterproof and breathable fabric on the upper surface. The breathable lining 2 is formed by blending spandex and polyester and impregnating with waterproof material.

[0033] Reference Figure 2 、 Figure 3 As shown, in order to increase the air pressure at the rear end of the conical micropore 4 to the front end, the conical micropore includes a conical portion 41 at the front and an expansion portion 42 at the rear. The expansion portion 42 opens in an arc shape backward, and the diameter of the expansion portion 42 is larger than the diameter of the corresponding position of the backward extension of the conical portion 41.

[0034] Reference Figure 2 、 Figure 3 As shown, to maintain both air permeability and waterproof performance of the conical micropores, the angle 43 of the lower end of the cone axis section of the conical micropores 4 is 20°-30°, and the height of the conical micropores 4 is 0.8-1.2 cm. In this embodiment, the angle 43 of the lower end of the cone axis section of the conical micropores 4 is preferably 28°, and the height of the conical micropores 4 is 1 cm.

[0035] Reference Figure 1-4 As shown, the present invention provides a method for processing the above-mentioned waterproof and breathable fabric for the upper surface, comprising the following steps:

[0036] First, a coating mechanism is used to apply a liquid rubber coating 3 to the inner side of the breathable surface fabric, and the liquid rubber coating is allowed to solidify and stabilize;

[0037] Secondly, a needle is used to pierce downward from the liquid rubber coating 3 to form cone-shaped micropores 4;

[0038] Then, turn the breathable surface layer 1 over, apply glue on the liquid rubber coating 3 and adhere it to the breathable lining 2;

[0039] Finally, wait to dry or tumble dry.

[0040] The present invention provides a needling device 5 for processing the aforementioned waterproof and breathable fabric for the upper surface. The device comprises a base 51, on which are mounted puncture needles 52. The front end of the puncture needles 52 comprises a conical portion 53 that matches the quasi-conical micropores 4, and the rear end comprises an arcuate enlarged portion 54 that matches the expanded portion 42. The arcuate enlarged portion 54 is fixed to the base 51. The needling device 5 comes in two forms: one in which the base 51 is a metal plate and carries the puncture needles 52, and another in which the base 51 is a cylinder with the puncture needles 52 mounted on its surface. Currently, the cylindrical base is the most commonly used, carrying 120,000 puncture needles 52.

[0041] Reference Figure 5 As shown, the second embodiment of the present invention is basically the same as the first embodiment, and the only difference is that the conical micropores 4 are polygonal pyramidal holes. In this embodiment, the conical micropores 4 are triangular pyramidal holes, and the polygonal pyramidal micropores are divided into a plurality of equal valves. The valves form a closed seam 45 after self-closing. The closed seam 45 is squeezed open when the air pressure inside the fabric is increased or when it is squeezed open for exhaust, and the self-closing and opening exhaust effects are better.

[0042] The above embodiments are subject to numerous modifications and variations. Therefore, the above description should not be considered as limiting, but rather as preferred examples. Those skilled in the art may implement other configurations without departing from the scope and spirit of this application. Furthermore, those skilled in the art may also make other modifications within the scope and spirit of the features and advantages described.

Claims

1. A waterproof and breathable fabric for a shoe upper, comprising a breathable surface layer and a breathable lining, characterized by: The inner side of the breathable surface layer is coated with a liquid rubber coating, and the composite layer of the breathable surface layer and the liquid rubber coating is punctured from the inside out to form densely distributed conical micropores, and the cross-sectional area of the conical micropores gradually decreases from the inside out. The breathable surface layer with the liquid rubber coating and the breathable lining are bonded with glue, wherein the liquid rubber coating and the breathable lining are bonded; the conical micropores include a conical portion at the front and an expansion portion at the rear, and the expansion portion opens in an arc shape backward.

2. The waterproof and breathable fabric for the upper surface of a shoe according to claim 1, characterized in that: The cone-like micropores are conical holes.

3. The waterproof and breathable fabric for the upper surface of a shoe according to claim 1, characterized in that: The cone-like micropores are polygonal pyramidal holes.

4. The waterproof and breathable fabric for the upper surface of a shoe according to claim 1, 2 or 3, characterized in that: The breathable lining is a thin layer of waterproof and breathable fabric.

5. The waterproof and breathable fabric for the upper surface of a shoe according to claim 4, characterized in that: The breathable lining is formed by blending spandex and polyester and impregnating with waterproof material.

6. The waterproof and breathable fabric for the upper surface of a shoe according to claim 1, characterized in that: The angle of the lower end of the cone axis section of the cone-like micropore is 20°-30°, and the height of the cone-like micropore is 0.8-1.2 cm.

7. The waterproof and breathable fabric for the upper surface of a shoe according to claim 6, characterized in that: The angle of the lower end of the cone axis section of the cone-like micropore is 28°, and the height of the cone-like micropore is 1 cm.

8. A method for processing the waterproof and breathable upper fabric according to claim 1, characterized in that: The following steps are involved: First, a coating mechanism is used to apply a liquid rubber coating on the inner side of the breathable surface fabric, and the liquid rubber coating is allowed to solidify and stabilize; Secondly, a needle is used to pierce downward from the liquid rubber coating to form cone-shaped micropores; Then, turn the breathable surface fabric over, apply glue on the liquid rubber coating, and adhere it to the breathable lining fabric; Finally, wait to dry or tumble dry.

9. A needle punching device for processing the waterproof and breathable fabric for the upper surface of claim 1, characterized in that: It includes a base with a puncture needle on it. The front end of the puncture needle is a conical part matching the conical microhole, and the rear end is an arc-shaped expansion part matching the expansion part. The arc-shaped expansion part is fixed on the base. The base is cylindrical and the surface of the cylinder is densely covered with puncture needles.

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