Rain boot leg structure, preparation method thereof and rain boots

Abstract

The invention relates to the technical field of rain boots, in particular to a boot leg structure of a rain boot, a preparation method of the boot leg structure and the rain boot, and the boot leg structure of the rain boot sequentially comprises a polyester peach skin mesh cloth layer, a PVC waterproof film layer and a hexagonal mesh cloth layer from outside to inside; the thickness of the PVC waterproof film is 0.25-0.40 mm, and the hydrostatic pressure is larger than or equal to 10 kPa. The novel rain boot leg structure has the beneficial effects that compared with a traditional PVC film / mesh cloth / PVC film structure, the novel rain boot leg structure provided by the invention is improved as follows: the outer layer material is changed, and the polyester peach skin mesh cloth is compact in suede surface, soft in hand feeling, capable of refracting sediment impact and wear-resistant. The middle functional layer is changed, the PVC film is moved to the middle layer, only the waterproof effect is achieved, the direct effect of external force is avoided, and the piercing risk is reduced. The inner-layer material is changed into the macroporous hexagonal mesh cloth, so that the integrity of the watertight depression bar is kept, and sweat can be quickly led out at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of rain boots, and in particular to a rain boot shaft structure and a preparation method thereof, and the rain boots. Background Art

[0002] In agricultural water-related operations (such as rice transplanting), the shafts of rain boots (commonly known as "rice transplanting boots") must not only prevent external mud and water from seeping in, but also must promptly discharge internal sweat to avoid long-term stuffy feet leading to skin diseases or decreased physical strength.

[0003] The typical structure of traditional rice transplanting boots is a three-layer composite of PVC film / mesh / PVC film. The outer PVC film is responsible for water insulation; the middle mesh layer only serves as a reinforcement framework; and the inner PVC film is further water-insulating, resulting in extremely poor overall air permeability. Although this structure is simple and low-cost, it has the following obvious drawbacks in actual use: (1) The two layers of continuous PVC film completely block the moisture channel. The water vapor generated by the worker's feet cannot be discharged in time. The humidity inside the boots rises rapidly, and the feeling of stuffiness is severe. Long-term work can easily induce problems such as eczema and athlete's foot.

[0004] (2) The outer surface of the traditional structure is a smooth PVC film, which is easily scratched and punctured when encountering sand, straw, and fertilizer crystals in paddy fields. It is also difficult to clean mud stains after they adhere, affecting the appearance and service life.

[0005] (3) The middle mesh is mostly made of ordinary polyester or nylon woven fabric with small pore size and poor resilience. It only provides mechanical strength and does not contribute to moisture permeability, wear resistance, and dirt resistance. At the same time, during the bonding process with the PVC film, if the tension and temperature are not properly controlled, the mesh is prone to shrinkage and deformation, resulting in pore closure, further weakening the breathability. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a waterproof, breathable and wear-resistant rain boot shaft structure and a preparation method thereof, as well as rain boots.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a rain boot shaft structure, which includes, from the outside to the inside: a peach skin mesh layer, PVC waterproof membrane layer and hexagonal mesh fabric layer; The PVC waterproof membrane has a thickness of 0.25-0.40 mm and a hydrostatic pressure of ≥10 kPa.

[0008] Another technical solution provided by the present invention is to provide a method for preparing the above-mentioned rain boot shaft structure, comprising the following steps: (1) Use dot hot melt adhesive to coat both sides of the PVC waterproof membrane with a coating amount of 10-30 g / m 2 ; (2) The peach skin surface layer, the hexagonal mesh cloth and the PVC waterproof membrane obtained in step (1) are laminated in three layers at once through a hot pressing process, with the hot pressing temperature controlled at 160-175° C., the pressure at 20-30 kg, and the time at 15-45 seconds to obtain a rain boot shaft structure.

[0009] Another technical solution of the present invention is to provide a rain boot, wherein the boot shaft thereof is a rain boot shaft structure manufactured by the above-mentioned method for preparing the rain boot shaft structure.

[0010] The beneficial effects of the present invention are as follows: the rain boot shaft structure and preparation method thereof and the rain boots of the present invention are improved as follows compared to the traditional "PVC film / mesh / PVC film" structure: the outer layer material is "changed" to peach skin mesh - the suede surface is dense, soft to the touch, can reflect the impact of mud and sand, is dirt-resistant, and has good wear resistance. The middle functional layer is "replaced" to move the PVC film inward to the middle layer, which only plays a water-isolating role, avoids direct external force, and reduces the risk of puncture. The inner layer material is "ventilated" to a large-pore hexagonal mesh cloth, which can quickly drain out sweat while maintaining the integrity of the watertight strip.

[0011] The resulting rain boot shaft structure, while maintaining impermeability at 10 kPa hydrostatic pressure, boasts over three times the moisture permeability of traditional double-layer PVC structures. In actual wear scenarios (32°C, 70% RH, continuous operation for 2 hours), the relative humidity inside the boots decreased by 40%, significantly reducing the feeling of stuffiness. DETAILED DESCRIPTION

[0012] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following describes them in conjunction with the implementation methods.

[0013] The present invention provides a rain boot shaft structure, which comprises, from outside to inside, a peach skin mesh layer, PVC waterproof membrane layer and hexagonal mesh fabric layer; The PVC waterproof membrane has a thickness of 0.25-0.40 mm and a hydrostatic pressure of ≥10 kPa.

[0014] Furthermore, in the above-mentioned rain boot shaft structure, PUR hot melt adhesive is provided between the peach skin mesh layer, the PVC waterproof membrane layer and the hexagonal mesh fabric layer for bonding.

[0015] Furthermore, in the above-mentioned rain boot shaft structure, the hexagonal mesh cloth is a polyester filament warp-knitted hexagonal mesh with a pore size of 1.0-1.4 mm.

[0016] Furthermore, in the above-mentioned rain boot shaft structure, the peach skin mesh is woven from polyester filaments, and the surface is sanded to form 0.05-0.15 mm fluff.

[0017] Another technical solution provided by the present invention is to provide a method for preparing the above-mentioned rain boot shaft structure, comprising the following steps: (1) Use dot hot melt adhesive to coat both sides of the PVC waterproof membrane with a coating amount of 10-30 g / m 2 ; (2) The peach skin surface layer, the hexagonal mesh cloth and the PVC waterproof membrane obtained in step (1) are laminated in three layers at once through a hot pressing process, with the hot pressing temperature controlled at 160-175° C., the pressure at 20-30 kg, and the time at 15-45 seconds to obtain a rain boot shaft structure.

[0018] Furthermore, in the preparation method of the above-mentioned rain boot shaft structure, the gluing process is to use point-shaped PUR hot melt adhesive coating with a coating amount of 30 g / m 2 .

[0019] Furthermore, in the above-mentioned method for preparing the rain boot shaft structure, the dot-shaped PUR hot melt adhesive is applied to form a grid distribution, the diameter of the dot-shaped PUR hot melt adhesive is 0.8 mm, and the distance between the dot-shaped PUR hot melt adhesive is 5 mm.

[0020] From the above description, it can be seen that the dot-shaped glue grid distribution can reduce the blockage of the mesh by the glue layer while ensuring the bonding strength, thereby further improving the air permeability.

[0021] Another technical solution of the present invention is to provide a rain boot, wherein the boot shaft thereof is a rain boot shaft structure manufactured by the above-mentioned method for preparing the rain boot shaft structure.

[0022] Furthermore, in the above-mentioned rain boots, an elastic diving cloth lining is provided at the upper opening of the boot shaft.

[0023] Example 1 A rain boot shaft structure, comprising, from outside to inside, a) an outer peach skin mesh layer; b) an intermediate PVC waterproof membrane layer; c) an inner hexagonal mesh layer; The PVC waterproof membrane is formed by calendering, with a thickness of 0.25-0.40 mm and a hydrostatic pressure of ≥10 kPa / 30 min; The peach skin mesh is woven from 50D / 36f high-elastic polyester 66 filaments, and the surface is sanded to form 0.1mm fluff, with a wear resistance level of ≥25,000 revolutions and a water resistance level of ≥4. The hexagonal mesh fabric is a 50D / 48f high-elastic polyester 66 filament warp-knitted hexagonal mesh with a pore size of 1.2±0.1mm, a rebound rate of ≥95%, and an air permeability of ≥350 mm / s.

[0024] The method for preparing the above-mentioned rain boot shaft structure comprises the following steps: S1 raw material preparation: PVC resin powder, plasticizer, stabilizer and lubricant were mixed in a mass ratio of 100:55:2.5:1.5, and the mixture was rolled out on a four-roll calender to obtain a PVC waterproof membrane with a thickness of 0.25 mm. After high-elastic polyester 66 filaments are woven, sanded, dyed and shaped to produce peach skin mesh fabric; High-elastic polyester 66 filaments were warp-knitted into hexagonal mesh fabrics and heat-set at 190°C for 30 seconds to eliminate internal stress; S2 uses dot-shaped PUR hot melt adhesive (melting point 125°C) to coat both sides of the PVC waterproof membrane with a coating amount of 30 g / m 2 The point-shaped PUR hot melt adhesive is coated to form a grid distribution, the point-shaped PUR hot melt adhesive has a diameter of 0.8 mm and a point-shaped PUR hot melt adhesive spacing of 5 mm; The peach skin surface layer, the hexagonal mesh cloth and the PVC waterproof membrane obtained in step (1) are laminated in three layers at once by a hot pressing process, with the hot pressing temperature controlled at 160-175°C, the pressure at 20-30kg, and the time at 15-45 seconds. The laminated composite sheet is shaped by a 25°C cooling roller and rolled up; S3 boot molding: Cut the composite sheet into boot pieces and weld the sides with high-frequency hot pressing; The upper part of the boot is lined with 15mm wide elastic diving fabric to prevent foot rubbing; The lower end of the boot shaft is connected to the rubber outsole by cold gluing or injection molding to produce the rain boots.

[0025] The rain boots obtained by the present invention have the following performance indicators: Impermeable to water for 30 minutes under 10 kPa hydrostatic pressure, with a moisture permeability of ≥6 mg / cm 2 h, air permeability ≥350 mm / s, achieving "water blocking outside and moisture removal inside"; Improved wear and stain resistance: The outer peach skin mesh fabric has no damage after the 25,000-turn Martindale test, and the surface water repellency level is level 4, which is easy to wipe clean; Anti-deformation: Through tension closed-loop control, the hexagonal mesh shrinkage rate is <5%, maintaining long-term breathability.

[0026] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention specification, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A rain boot shaft structure, characterized in that: From outside to inside, it includes: peach skin mesh layer, PVC waterproof membrane layer and hexagonal mesh fabric layer; The PVC waterproof membrane has a thickness of 0.25-0.40 mm and a hydrostatic pressure of ≥10 kPa.

2. The rain boot shaft structure according to claim 1, characterized in that: PUR hot melt adhesive is provided between the peach skin mesh layer, the PVC waterproof membrane layer and the hexagonal mesh fabric layer for bonding.

3. The rain boot shaft structure according to claim 1, characterized in that: The hexagonal mesh cloth is a polyester filament warp-knitted hexagonal mesh with a pore size of 1.0-1.4 mm.

4. The rain boot shaft structure according to claim 1, characterized in that: The peach skin mesh is woven from polyester filaments, and the surface is sanded to form 0.05-0.15 mm pile.

5. The method for preparing the rain boot shaft structure according to any one of claims 1 to 4, characterized in that: The steps include: (1) Use dot hot melt adhesive to coat both sides of the PVC waterproof membrane with a coating amount of 10-30 g / m 2 ; (2) The peach skin surface layer, the hexagonal mesh cloth and the PVC waterproof membrane obtained in step (1) are laminated in three layers at once through a hot pressing process, with the hot pressing temperature controlled at 160-175° C., the pressure at 20-30 kg, and the time at 15-45 seconds to obtain a rain boot shaft structure.

6. The method for preparing the rain boot shaft structure according to claim 5, characterized in that: The gluing process is to use dot-shaped PUR hot melt adhesive coating with a coating amount of 30 g / m 2 .

7. The method for preparing the rain boot shaft structure according to claim 6, characterized in that: The dot-shaped PUR hot melt adhesive is coated to form a grid distribution, the diameter of the dot-shaped PUR hot melt adhesive is 0.8 mm, and the distance between the dot-shaped PUR hot melt adhesive is 5 mm.

8. A rain boot, characterized in that: The boot shaft is a rain boot shaft structure made by the method for preparing the rain boot shaft structure according to any one of claims 6 to 7.

9. The rain boots according to claim 8, characterized in that: The upper opening of the boot shaft of the rain boot is provided with an elastic diving cloth lining.