Shoe upper waterproof breathable fabric, processing method thereof and needling device for processing fabric

Abstract

The invention discloses an upper waterproof breathable fabric and a processing method and a needling device.The fabric comprises a breathable surface layer and a breathable lining, the inner side of the breathable surface layer is coated with a liquid rubber coating, a composite layer of the breathable surface layer and the liquid rubber coating is punctured from inside to outside to form densely-distributed cone-like micropores, and the breathable lining is made of polyester fibers. The sectional areas of the cone-like micropores are gradually reduced from inside to outside, and the breathable surface layer with the liquid rubber coating is adhered to the breathable lining by adopting glue. Due to the fact that the cone-like micropores are formed in the liquid rubber coating, the cone-like micropores are in a closed state under the elastic extrusion of the liquid rubber coating in a natural state, and only when the waterproof breathable fabric of the upper face is made into the fabric of clothes or shoes, gas inside the fabric expands to generate pressure on the openings inside the cone-like micropores, so that the waterproof breathable fabric of the upper face is made into the fabric of the clothes or the shoes. Pressure formed at the opening of the cone-like micropore is conducted to the front end to form strong air pressure, and the front end of the cone-like micropore is pressed to be opened. On the contrary, the liquid cannot enter from the front ends of the cone-like micropores, so that an efficient waterproof and breathable effect is formed.

Description

Technical Field

[0001] The present invention relates to a waterproof and breathable fabric for shoe uppers, a processing method thereof, and a needling device for processing the fabric. Background Art

[0002] The invention patent with the publication number CN112297575A discloses a waterproof and breathable fabric for shoe uppers and a preparation method thereof. The waterproof and breathable fabric for shoe uppers includes an inner layer and an outer layer. The inner layer is a chemical fiber blended fabric, and the outer layer is a breathable fabric. The inner layer and the outer layer are adhesively connected by an adhesive, and the yarns of the outer layer are treated by padding with a waterproof and breathable coating; the waterproof and breathable coating is prepared from polyethylene oxide, mica powder, and magnesium lauryl sulfate; the preparation method of the waterproof and breathable fabric for shoe uppers is: treating the breathable fabric with the waterproof and breathable coating, and then thinly coating an adhesive on one side of the chemical fiber blended fabric, and thermally fusing and bonding the breathable fabric and the chemical fiber blended fabric by using a hot stamping device. The fabric of this application has relatively high waterproof and breathable properties at the same time. The waterproof and breathable function of this waterproof and breathable fabric for shoe uppers is mainly formed by treating the yarns of the outer layer by padding with a waterproof and breathable coating. However, the air permeability of this waterproof and breathable fabric for shoe uppers is small, and it cannot block the entry of the vast majority of moisture in rainy weather with a large amount of rainfall. Summary of the Invention

[0003] In view of the deficiencies of the background art, the technical problems to be solved by the present invention are to provide a waterproof and breathable fabric for shoe uppers with a larger air permeability and a better waterproof effect. The technical problems to be solved by the present invention also include providing a processing method for the above-mentioned waterproof and breathable fabric for shoe uppers.

[0004] To this end, the present invention is implemented by the following technical solutions: Preferably, the waterproof and breathable fabric for shoe uppers includes a breathable surface layer and a breathable lining. The characteristics are: a liquid rubber coating is coated on the inner side of the breathable surface layer, and the composite layer of the breathable surface layer and the liquid rubber coating is punctured from the inside to the outside to form densely distributed conical micro-holes. The cross-sectional area of the conical micro-holes gradually decreases from the inside to the outside. The breathable surface layer with the liquid rubber coating is adhesively bonded to the breathable lining by glue, and the liquid rubber coating is adhered to the breathable lining.

[0005] Preferably, the conical micro-holes are conical holes.

[0006] Preferably, the conical micro-holes are multi-pyramidal holes.

[0007] Preferably, the breathable lining is a thin layer of waterproof and breathable fabric for shoe uppers.

[0008] Preferably, the breathable lining is formed by blending spandex and polyester and padding with a waterproof material.

[0009] Preferably, the conical micro-holes include a conical part at the front and an expanding part at the back, and the expanding part opens backward in an arc shape.

[0010] Preferably, the included angle at the lower end of the conical axial section of the conical micro-holes is 20°-30°, and the height of the conical micro-holes is 0.8-1.2 cm.

[0011] Preferably, the included angle at the lower end of the conical axial section of the conical micro-holes is 28°, and the height of the conical micro-holes is 1 cm.

[0012] A processing method of the above-mentioned waterproof and breathable fabric for the shoe upper surface provided by the present invention includes the following steps: First, a liquid rubber coating is applied to the inner side of the breathable surface layer fabric by a coating mechanism, and the liquid rubber coating is allowed to solidify and stabilize. Secondly, the liquid rubber coating is punctured downward by a needle-punching method to form conical micro-holes. Then, the breathable surface layer fabric is turned over, and glue is applied to the liquid rubber coating and adhered to the breathable lining fabric. Finally, wait for air drying or drying.

[0013] The present invention provides a needle-punching device for processing the above-mentioned waterproof and breathable fabric for the shoe upper surface, including a base body, a puncturing needle head is provided on the base body, the front end of the puncturing needle head is a conical part matching the conical micro-holes, and the rear part is an arc-shaped enlarged part matching the enlarged part, and the arc-shaped enlarged part is fixed on the base body.

[0014] After adopting the above technical solutions, the beneficial effects are as follows: Since the conical micro-holes are opened in the liquid rubber coating, the conical micro-holes are in a closed state under the elastic extrusion of the liquid rubber coating in the natural state. Only when the waterproof and breathable fabric for the shoe upper surface is made into a shoe fabric, the gas inside it is squeezed or heated and expanded to generate pressure on the inner opening of the conical micro-holes. The pressure formed at the opening of the conical micro-holes is conducted to the front end to form a strong air pressure. At this time, the front end of the conical micro-holes is pressed open and the internal gas is discharged. On the contrary, the liquid cannot enter from the front end of the conical micro-holes, so an efficient waterproof and breathable effect is formed, and the exhaust volume is larger.

[0015] The conical micro-holes opened in the liquid rubber coating of the present application have a better waterproof effect for larger rainfall, but for the penetration of moisture, the addition of a breathable lining fabric is required. The breathable lining fabric in the present application is a thin waterproof and breathable fabric for the shoe upper surface. This waterproof and breathable fabric for the shoe upper surface is formed by padding with a waterproof agent developed by the application and a self-developed method, which can better prevent moisture from entering. Thus, two waterproof and breathable layers inside and outside are formed to achieve a better waterproof effect while maintaining a large exhaust volume.

[0016] The conical micropores of the application include a conical part at the front and an expanded part at the rear. The expanded part opens in an arc shape backward, and the diameter of the expanded part is larger than the diameter of the corresponding position of the conical part extended backward. This structure is beneficial to forming a larger pressure difference from the inner end to the outer end, increasing the pressure to discharge the internal gas.

[0017] The lower included angle of the conical axis section of the conical micropores is 20° - 30°, and the height of the conical micropores is 0.8 - 1.2 cm. This structure is beneficial to making the formed conical micropores maintain both good exhaust effect and good waterproof effect. Especially when the lower included angle of the conical axis section of the rotating conical micropores is 28° and the height is 1 cm, the effect is the best. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention has the following drawings: Figure 1 It is a schematic plan view of the structure of the waterproof and breathable fabric for the shoe upper provided by the present invention.

[0019] Figure 2 It is Figure 1 a partially enlarged schematic view at A in

[0020] Figure 3 It is Figure 2 a partially enlarged schematic cross-sectional view of the local structure of

[0021] Figure 4 It is a partially enlarged schematic side view of the needle punching device.

[0022] Figure 5 It is a partially enlarged schematic cross-sectional view of the local structure of the waterproof and breathable fabric for the shoe upper provided in Embodiment 2 of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in combination with the drawings and preferred embodiments, details the specific implementation manners, structures, features and their effects according to the present invention as follows.

[0024] Referring to Figures 1-4 As shown, the waterproof and breathable fabric for the shoe upper provided in Embodiment 1 of the present invention includes a breathable surface layer 1 and a breathable lining 2. A liquid rubber coating 3 is coated on the inner side of the breathable surface layer 1. 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. In this embodiment, the conical micropores 4 are conical holes. The breathable surface layer 1 with the liquid rubber coating 3 and the breathable lining 2 are adhered by glue, and the liquid rubber coating 3 is adhered to the breathable lining 2.

[0025] As shown in the figure, in order to improve the anti-seepage performance and maintain good air permeability, the breathable inner lining 2 is a thin-layer waterproof and breathable fabric for the shoe upper, and the breathable inner lining 2 is formed by blending spandex and polyester and impregnating and rolling a waterproof material.

[0026] Referring to Figure 2 、 Figure 3 As shown, in order to increase the air pressure at the rear end of the conical micro-hole 4 relative to the front end, the conical micro-hole includes a front conical portion 41 and a rear expansion portion 42. The expansion portion 42 opens backward in an arc shape, and the diameter of the expansion portion 42 is larger than the diameter of the corresponding position of the conical portion 41 extended backward.

[0027] Referring to Figure 2 、 Figure 3 As shown, in order to maintain both the air permeability and the waterproof performance of the conical micro-hole, the lower angle 43 of the conical axis section of the conical micro-hole 4 is 20°-30°, and the height of the conical micro-hole 4 is 0.8-1.2 cm. In this embodiment, preferably, the lower angle 43 of the conical axis section of the conical micro-hole 4 is 28°, and the height of the conical micro-hole 4 is 1 cm.

[0028] Referring to Figures 1-4 As shown, a processing method for the above-mentioned waterproof and breathable fabric for the shoe upper provided by the present invention includes the following steps: First, use a coating mechanism to coat a liquid rubber coating 3 on the inner side of the breathable surface layer fabric, and wait for the liquid rubber coating to solidify and stabilize; Secondly, use a needle-punching method to pierce downward from the liquid rubber coating 3 to form conical micro-holes 4; Then, turn over the breathable surface layer 1 fabric, apply glue on the liquid rubber coating 3 and stick and bond it with the breathable inner lining 2; Finally, wait for air drying or drying.

[0029] The present invention provides a needle-punching device 5 for processing the above-mentioned waterproof and breathable fabric for the shoe upper, which includes a base body 51. The base body 51 is provided with a puncture needle 52. The front end of the puncture needle 52 is a conical portion 53 matching the conical micro-hole 4, and the rear portion is an arc-shaped enlarged portion 54 matching the expansion portion 42. The arc-shaped enlarged portion 54 is fixed on the base body 51. The needle-punching device 5 has two forms. One form has a base body 51 made of a metal plate and is provided with a puncture needle 52, and the other form has a base body 51 in the shape of a cylinder with a puncture needle 52 on the surface of the cylinder. Currently, the mainly used base body is in the shape of a cylinder, and it is provided with 120,000 puncture needles 52.

[0030] Referring to Figure 5As shown, Embodiment 2 of the present invention is basically the same as Embodiment 1, with the only difference being that the conical micropores 4 are multi-pyramidal holes. In this embodiment, the conical micropores 4 are selected as triangular pyramidal holes. The multi-pyramidal micropores are divided into multiple equal valves, and the valves form a closing seam 45 after self-closing. The closing seam 45 is opened when the air pressure inside the fabric is increased or when it is squeezed, for exhaust, and its effect of self-closing and opening for exhaust is better.

[0031] There are still various modifications and deformations to the above embodiments. Therefore, the above description should not be regarded as completely restrictive, but only as a preferred example. Those skilled in the art can implement other structural solutions without departing from the scope and spirit of the present application. In addition, those skilled in the art can also make other modifications within the scope and spirit of the appended features and advantages.

Claims

1. A waterproof and breathable fabric for shoe upper, comprising a breathable surface layer and a breathable lining, characterized in that: A liquid rubber coating is applied to the inner side of the breathable surface layer. 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. The breathable surface layer with the liquid rubber coating is adhered to the breathable lining cloth with glue, and the liquid rubber coating is adhered to the breathable lining cloth.

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

3. The waterproof and breathable fabric for the upper of the shoe according to claim 1, wherein: The conical micropores are multi-pyramidal holes.

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

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

6. The waterproof and breathable fabric for shoe upper according to claim 1 or 2 or 3, characterized in that: The conical micropores include a conical part at the front and an expanding part at the back, and the expanding part opens backward in an arc shape.

7. The waterproof and breathable fabric for shoe upper according to claim 6, characterized in that: The lower angle of the conical cross-section of the conical micropores is 20°-30°, and the height of the conical micropores is 0.8-1.2 cm.

8. The waterproof and breathable fabric for shoe upper according to claim 7, wherein: The lower angle of the conical cross-section of the conical micropores is 28°, and the height of the conical micropores is 1 cm.

9. A processing method of the waterproof and breathable fabric for the shoe upper surface described in claim 1, characterized in that: It includes the following steps: First, use a coating mechanism to apply a liquid rubber coating to the inner side of the breathable surface layer fabric, and wait for the liquid rubber coating to solidify and stabilize. Secondly, use a needle-punching method to pierce downward from the liquid rubber coating to form conical micropores. Then, turn the breathable surface layer fabric over, apply glue on the liquid rubber coating and adhere it to the breathable lining cloth. Finally, wait for it to dry or be dried.

10. A needling device for processing the waterproof and breathable fabric of the shoe upper surface described in claim 6, characterized in that: It includes a substrate, on which a puncture needle head is provided. The front end of the puncture needle head is a conical part matching the conical micropores, and the rear part is an arc-shaped enlarged part matching the expanding part. The arc-shaped enlarged part is fixed on the substrate.

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