Preparation method of durable vamp material

Abstract

The invention discloses a preparation method of a durable vamp material. The method comprises the following steps: S1, preparing a polyester fiber material, wherein the breaking strength of the polyester fiber material is greater than 24N, the breaking strength is greater than 7cN / dtex, the elongation at break is greater than 17.5%, and the linear density variation coefficient is less than 1.4%; s2, weaving, wherein a plain structure material is obtained on a water jet loom; s3, desizing: desizing the plain structure material obtained in the step S2, and removing the slurry on the plain structure material; s4, refining is conducted, specifically, the material treated in the S3 is subjected to refining treatment, and impurities and oil stains are removed; s5, pre-shaping: performing pre-shaping treatment on the material obtained in the step S4 to eliminate internal stress; step S6, dyeing: dyeing the material obtained in the step S5; and S7, shaping: shaping the material obtained in the step S6, and fixing the size of a finished product to obtain the vamp material. The vamp material prepared by the preparation method provided by the invention is high in strength and good in wear resistance.

Description

Technical Field

[0001] This invention relates to the field of footwear technology, and in particular to a method for preparing a durable shoe upper material. Background Technology

[0002] Currently, most shoe materials on the market are developed and produced based on ordinary yarns. For workwear or sports shoes, due to the varied usage scenarios and high susceptibility to wear and tear, the surface materials often become damaged in a short period of time and cannot be repaired, requiring replacement with new shoes. On the other hand, the more durable materials currently on the market are produced through complex coating and other processes, which are costly, increase the weight of the material itself, and are not breathable, resulting in a very poor user experience. Summary of the Invention

[0003] The purpose of this invention is to provide a method for preparing a durable shoe upper material, which results in a shoe upper material with high strength and good wear resistance.

[0004] Based on the above problems, the technical solution provided by the present invention is as follows: A method for preparing a durable shoe upper material includes the following steps; Step S1: Prepare polyester fiber material, wherein the polyester fiber material has a breaking strength greater than 24N, a breaking strength greater than 7cN / dtex, a breaking elongation greater than 17.5%, and a linear density variation coefficient less than 1.4%; Step S2: Weaving, using the polyester fiber material obtained in step S1 to obtain a plain weave structure material on a water jet loom; Step S3: Desizing. The plain weave material obtained in step S2 is desizing to remove the slurry from the plain weave material. Step S4: Refining. The material processed in step S3 is refined to remove impurities and oil stains. Step S5: Pre-forming, the material obtained in step S4 is subjected to pre-forming treatment to eliminate internal stress; Step S6: Staining, the material obtained in step S5 is stained; Step S7: Shaping. The material obtained in step S6 is shaped to fix the finished size and obtain the shoe upper material.

[0005] In some of these embodiments, step S1 includes the following steps: S11: Polyester chip pretreatment, including pre-crystallization, drying and pulverization of polyester chips; S12: Melt filtration, which involves two-stage filtration of the melt to remove impurities; S13: Melt thickening, which increases the internal resistance of the molecular chain by introducing polar groups to thicken the melt; S14: Spinning and cooling: The high-temperature melt is extruded through the spinneret and then the extruded filament is cooled. S15: Stretching, stretching the cooled filaments to a stretch ratio of 5.6 to 5.8; S16: Heat setting, heat setting of the cooled filaments at a temperature of 130℃~140℃; S17: Winding and fiber splitting, winding and splitting the heat-set material.

[0006] In some of these embodiments, step S3 involves alkali desizing, in which 15–25 g / L of alkali is added to water at 35–45°C for desizing.

[0007] In some embodiments, in step S4, refining is carried out at 70°C to 90°C for 20 to 30 minutes, and the concentration of the refining agent is 1.5 to 2.5 g / L.

[0008] In some embodiments, step S5 involves immersion in room temperature water and pre-forming in an oven at 180–200°C at a speed of 15–25 m / min.

[0009] In some embodiments, step S6 involves dyeing the material using an L-shaped overflow cylinder, with the temperature inside the overflow cylinder being 130–140°C and the dyeing time being 25–35 minutes.

[0010] In some embodiments, step S7 involves immersion in room temperature water and pre-forming in an oven at 140–160°C at a speed of 15–25 m / min.

[0011] Compared with the prior art, the advantages of the present invention are: 1. The shoe upper material made of specific polyester fiber materials has high strength, good wear resistance, and is also lighter, softer, and more comfortable; 2. Compared with the existing technology that uses coatings to enhance the wear resistance of shoe upper materials, the preparation process of this shoe upper material is green and pollution-free, and has good environmental friendliness. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. The accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 These are photographs of wear resistance tests performed on embodiments and comparative examples of the present invention; Figure 2These are photographs of the kneading resistance tests performed on embodiments and comparative examples of the present invention; Figure 3 The images show the wear resistance tests performed on the embodiments and comparative examples of the present invention. Detailed Implementation

[0014] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0015] Example

[0016] A method for preparing a durable shoe upper material includes the following steps; Step S1: Prepare polyester fiber material, wherein the polyester fiber material has a breaking strength greater than 24N, a breaking strength greater than 7cN / dtex, a breaking elongation greater than 17.5%, and a linear density variation coefficient less than 1.4%; Step S2: Weaving, using the polyester fiber material obtained in step S1 to obtain a plain weave structure material on a water jet loom; Step S3: Desizing. The plain weave material obtained in step S2 is desizing to remove the slurry from the plain weave material. Step S4: Refining. The material processed in step S3 is refined to remove impurities and oil stains. Step S5: Pre-forming, the material obtained in step S4 is subjected to pre-forming treatment to eliminate internal stress; Step S6: Staining, the material obtained in step S5 is stained; Step S7: Shaping. The material obtained in step S6 is shaped to fix the finished size and obtain the shoe upper material.

[0017] Step S1 includes the following steps: S11: Polyester chip pretreatment, including pre-crystallization, drying and pulverization of polyester chips; S12: Melt filtration, which involves two-stage filtration of the melt to remove impurities; S13: Melt thickening, which increases the internal resistance of the molecular chain by introducing polar groups to thicken the melt; S14: Spinning and cooling: The high-temperature melt is extruded through a fine spinneret and then the extruded filaments are cooled. S15: Stretching, stretching the cooled filament with a stretch ratio of 5.7; S16: Heat setting, heat setting of the cooled filaments at a temperature of 135℃; S17: Winding and fiber splitting, winding and splitting the heat-set material.

[0018] In step S3, alkali desizing is performed by adding 20 g / L of alkali to water at 40°C.

[0019] In step S4, the refining is carried out at 90°C for 30 minutes, and the concentration of the refining agent is 2 g / L.

[0020] In step S5, the machine is immersed in water at room temperature and pre-shaped in an oven at 190°C at a speed of 20 m / min.

[0021] In step S6, an L-shaped overflow cylinder is used to dye the material. The temperature inside the overflow cylinder is 135℃, and the dyeing time is 30 minutes.

[0022] In step S7, the machine is immersed in water at room temperature and pre-shaped in an oven at 150°C at a speed of 20 m / min.

[0023] Comparative Example After weaving fabric using conventional yarn (ordinary polyester filament in existing technology), the fabric undergoes desizing, refining, pre-setting, dyeing, and setting treatments. Finally, the fabric is coated with a mixture of polyurethane, brightening agents, crosslinking agents, and other materials to enhance its performance.

[0024] Sample testing (1) Abrasion resistance tests were conducted on the products of the Example and Comparative Examples respectively. The product of the Example was subjected to more than 1000 Martindale abrasions without damage to the fabric surface, while the product of the Comparative Example showed obvious wear. For details, please refer to the appendix. Figure 1 .

[0025] (2) The products of the examples and the comparative examples were subjected to a rubbing resistance test. The product of the examples was rubbed more than 100 times without damage to the fabric surface, while the product of the comparative example showed obvious wear. See the appendix for details. Figure 2 .

[0026] (3) Circular abrasion resistance tests were conducted on the products of the examples and the comparative examples. The product of the examples underwent more than 1000 circular abrasion cycles without damage to the fabric surface, while the comparative example showed obvious wear. See Appendix for details. Figure 3 .

[0027] In summary, the prepared shoe upper material has high strength and good wear resistance.

[0028] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent transformations or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A method of making a durable upper material, characterized by, The method comprises the following steps: Step S1: preparing polyester fiber material, the breaking strength of which is greater than 24N, the breaking strength is greater than 7cN / dtex, the elongation at break is greater than 17.5%, and the linear density variation coefficient is less than 1.4%; Step S2: weaving, using the polyester fiber material obtained in step S1 to obtain a plain structure material on a water-jet loom; Step S3: desizing, desizing treatment is performed on the plain structure material obtained in step S2 to remove the sizing agent on the plain structure material; Step S4: refining, refining treatment is performed on the material after step S3 to remove impurities and oil stains; Step S5: pre-setting, pre-setting treatment is performed on the material obtained in step S4 to eliminate internal stress; Step S6: dyeing, dyeing is performed on the material obtained in step S5; Step S7: setting, setting is performed on the material obtained in step S6 to fix the size of the finished product, and a shoe upper material is obtained.

2. The method of making a durable upper material of claim 1, wherein: The step S1 comprises the following steps: S11: polyester chip pretreatment, pre-crystallization, drying and crushing are performed on the polyester chip; S12: melt filtration, two-stage filtration is performed on the melt to remove impurities; S13: melt tackification, the molecular chain resistance is increased by introducing a polar group to increase the tackification of the melt; S14: spinning and cooling, the high-temperature melt is extruded through a spinneret, and then the extruded filamentous body is cooled; S15: stretching, the cooled filamentous body is stretched, and the stretching ratio is 5.6-5.8; S16: heat setting, the cooled filamentous body is heat set at a temperature of 130-140℃; S17: winding and fiber separation, the material after heat setting is wound and fiber separated.

3. The method of making a durable upper material of claim 1, wherein: In step S3, alkali desizing is adopted, and 15-25g / L alkali is added in water at 35-45℃ for desizing.

4. The method of making a durable upper material of claim 1, wherein: In step S4, refining is performed at 70-90℃ for 20-30 minutes, and the concentration of the refining agent is 1.5-2.5g / L.

5. The method of making a durable upper material of claim 1, wherein: In step S5, cold water padding is adopted, and pre-setting is performed in an oven at 180-200℃ at a speed of 15-25m / min.

6. The method of making a durable upper material of claim 1, wherein: In step S6, L-type overflow long cylinder is adopted for dyeing, the temperature in the overflow long cylinder is 130-140℃, and the dyeing time is 25-35 minutes.

7. The method of making a durable upper material of claim 1, wherein: In step S7, cold water padding is adopted, and pre-setting is performed in an oven at 140-160℃ at a speed of 15-25m / min.

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