Shoe with aurora vamp and manufacturing method thereof

Abstract

The invention relates to the technical field of vamp decoration and shoe manufacturing, and discloses a shoe with an aurora vamp and a manufacturing method thereof.The shoe comprises a sole, a vamp body and an aurora printing layer, the vamp body is fixedly connected to the upper end face of the sole, and the outer surface of the vamp body is covered with the aurora printing layer; the aurora printing layer is formed by cross printing of four kinds of basic color printing ink, the four kinds of basic color printing ink are cyan printing ink, magenta printing ink, yellow printing ink and transparent optically variable printing ink, and the thickness of the aurora printing layer is 0.02 mm-0. 08mm. The hierarchical structure of the aurora vamp is reasonably designed, the aurora printing layer is formed by crossing specific four kinds of basic color ink, and the synergistic effect of the priming coat and the protective layer is matched, so that the gorgeous and stable aurora visual effect can be presented, the overall adhesion firmness of the vamp can be improved, the problems of falling off, cracking and the like of the aurora printing layer are avoided, and the service life of the vamp is prolonged. And the decoration and the structural stability of the product are both considered.

Description

Technical Field

[0001] This invention relates to the field of shoe upper decoration and footwear manufacturing technology, specifically to a shoe with an aurora upper and its manufacturing method. Background Technology

[0002] With the upgrading of footwear consumption, consumers are not only paying attention to the comfort and functionality of shoes, but also increasingly demanding aesthetic appeal. The aurora effect, with its vibrant colors and strong visual impact, is widely used in the design of shoe upper materials, becoming an important direction for enhancing the aesthetics and market competitiveness of footwear products. Currently, methods for achieving the aurora effect on shoe uppers mainly include aurora film hot-press lamination, direct spraying of aurora paint, and printing of aurora ink. While the aurora film hot-press lamination method can quickly create the aurora effect, it suffers from poor adhesion between the film and the shoe upper, is prone to peeling and detachment after long-term wear, and significantly reduces the breathability of the shoe upper. The problem is that the direct spraying of aurora paint, while relatively simple, results in poor film uniformity and unstable aurora effect. Furthermore, the coating lacks wear resistance and anti-aging properties, leading to fading and cracking after prolonged use. Printing aurora ink offers a more refined aurora effect compared to the previous two methods; however, current printing processes often use single-color inks, resulting in limited aurora color gradations and a less rich visual effect. Additionally, due to the varying surface characteristics of shoe upper substrates (such as polyester fiber mesh), existing technologies lack targeted substrate pretreatment processes, leading to insufficient adhesion between the printed layer and the substrate, and a tendency for the printed layer to peel off.

[0003] Furthermore, the unreasonable parameters and process design of the existing printing and subsequent curing and protection processes have led to poor molding quality stability of aurora shoe uppers. It is difficult to guarantee the consistency of aurora effect between different batches of products, and the comprehensive performance of the finished shoe uppers, such as wear resistance and UV resistance, cannot meet the needs of long-term use, which restricts the large-scale production and market promotion of aurora shoe upper footwear products. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a shoe with an aurora-like upper and a method for manufacturing the same, thus solving the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a shoe with an aurora upper, comprising a sole, an upper body, and an aurora printing layer, wherein the upper body is fixedly connected to the upper surface of the sole, and the aurora printing layer covers the outer surface of the upper body; the aurora printing layer is formed by cross-printing four basic color inks, namely cyan ink, magenta ink, yellow ink, and transparent photochromic ink, and the thickness of the aurora printing layer is 0.02mm-0.08mm.

[0006] Preferably, the upper body is made of polyester fiber mesh with a pore size of 0.1mm-0.3mm and a weight of 80g / ㎡-120g / ㎡.

[0007] Preferably, the aurora printing layer includes a first printing layer, a second printing layer, a third printing layer, and a fourth printing layer stacked sequentially. The first printing layer is formed by printing with cyan ink, the second printing layer is formed by printing with magenta ink, the third printing layer is formed by printing with yellow ink, and the fourth printing layer is formed by printing with transparent optically variable ink.

[0008] Preferably, the thickness of the first printing layer, the second printing layer, and the third printing layer is 0.005mm-0.02mm, and the thickness of the fourth printing layer is 0.005mm-0.01mm.

[0009] Preferably, a base coating layer is provided between the shoe upper body and the aurora printing layer. The base coating layer is made of polyurethane resin and has a thickness of 0.01mm-0.03mm.

[0010] Preferably, the outer surface of the aurora printing layer is further provided with a protective layer, which is made of ultraviolet-cured resin and has a thickness of 0.01mm-0.02mm.

[0011] A method for manufacturing a shoe with an aurora-like upper includes the following steps:

[0012] S1. Pretreatment of shoe upper body: The polyester fiber mesh is cleaned and dried, and then subjected to plasma surface modification treatment. The modification treatment power is 300W-500W and the treatment time is 30s-60s.

[0013] S2. Base coat application: Apply polyurethane resin base coat to the outer surface of the pretreated shoe upper. After application, dry at 60℃-80℃ for 15-30 minutes to form the base coat.

[0014] S3, Four-color cross printing: Four independent screens are used to print four basic color inks in sequence to form the first printing layer, the second printing layer, the third printing layer and the fourth printing layer. The printing layers are dried at 70℃-90℃ for 10min-20min between printing. The mesh count of the printing screen is 120-200 mesh and the printing pressure is 0.3MPa-0.5MPa.

[0015] S4. Protective Layer Coating: A UV-curable resin is coated onto the outer surface of the fourth printed layer, followed by UV curing with a wavelength of 365nm and an intensity of 80mW / cm². 2 -120mW / cm 2 The curing time is 3-5 seconds, forming a protective layer;

[0016] S5. Molding and Assembly: The printed upper body is sewn or glued to the sole to obtain a shoe with an aurora upper.

[0017] Preferably, in step S1, the cleaning is performed using a neutral detergent aqueous solution with ultrasonic cleaning at a frequency of 40kHz-60kHz, a cleaning time of 10min-15min, a drying temperature of 50℃-70℃, and a drying time of 20min-30min.

[0018] Preferably, in step S3, the ink is composed of the following components in parts by weight: 30-50 parts acrylic resin, 10-20 parts photochromic pigment, 2-5 parts dispersant, 1-3 parts defoamer, and 15-30 parts diluent.

[0019] Preferably, in step S5, if adhesive bonding is used for fixing, the adhesive used is polyurethane hot melt adhesive, the bonding temperature is 120℃-150℃, the bonding pressure is 0.2MPa-0.4MPa, and the pressure holding time is 30s-60s.

[0020] This invention provides a shoe with an aurora-like upper and a method for manufacturing the same. It offers the following advantages:

[0021] 1. This invention, through the rational design of the layered structure of the aurora upper, uses four specific base color inks to cross-form the aurora printing layer. Combined with the synergistic effect of the base layer and the protective layer, it can not only present a gorgeous and stable aurora visual effect, but also improve the overall adhesion of the upper, avoid problems such as peeling and cracking of the aurora printing layer, and take into account both the decorative and structural stability of the product.

[0022] 2. This invention uses polyester fiber mesh as the upper body and combines it with targeted pretreatment processes, so that the upper body has good breathability and can optimize the bonding effect with subsequent coatings and printing layers. At the same time, with the specific manufacturing process design, it can achieve smooth connection between each process, improve production efficiency, and reduce the defect rate in the production process.

[0023] 3. The manufacturing method of the present invention, through precise control of key processes such as shoe upper pretreatment, coating construction, printing and curing, can not only ensure the molding quality and visual consistency of the aurora shoe upper, but also enhance the overall performance of the shoe upper such as wear resistance and UV resistance, extend the product service life and improve the user experience. Attached Figure Description

[0024] Figure 1 This is the overall flowchart of the present invention. Detailed Implementation

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see the appendix Figure 1 The present invention will be further described in detail below with reference to specific embodiments. The raw materials used in this embodiment are all conventional commercial products, and the process operations not specifically described are all conventional technical means.

[0027] Example 1:

[0028] A shoe with an aurora-like upper includes a sole, an upper body, and an aurora printing layer. The upper body is made of polyester fiber mesh (0.2mm aperture, 100g / m² weight) and is fixedly connected to the upper surface of the sole. A base layer (made of polyurethane resin, 0.02mm thick) is provided between the upper body and the aurora printing layer. The aurora printing layer covers the outer surface of the base layer and is formed by cross-printing a first printing layer (cyan ink, 0.01mm thick), a second printing layer (magenta ink, 0.01mm thick), a third printing layer (yellow ink, 0.01mm thick), and a fourth printing layer (transparent photochromic ink, 0.008mm thick), with a total thickness of 0.048mm. A protective layer (made of UV-curable resin, 0.015mm thick) is provided on the outer surface of the aurora printing layer.

[0029] The manufacturing method includes the following steps: S1, Pre-treatment of the shoe upper: The polyester fiber mesh is ultrasonically cleaned with a neutral detergent aqueous solution (ultrasonic frequency 50kHz, cleaning time 12min), then dried at 60℃ for 25min, and then subjected to plasma surface modification treatment (modification power 400W, treatment time 45s); S2, Base coating application: A polyurethane resin base coating is applied to the outer surface of the pre-treated shoe upper, and after coating, it is dried at 70℃ for 22min to form the base coating; S3, Four-color cross printing: Four independent meshes are used... Four base color inks were printed on a 160-mesh plate to form the first to fourth printing layers. Adjacent layers were dried at 80°C for 15 minutes between printings, with a printing pressure of 0.4 MPa. The transparent photochromic ink consisted of the following components by weight: 40 parts acrylic resin, 15 parts photochromic pigment, 3 parts dispersant, 2 parts defoamer, and 22 parts diluent. S4, Protective Layer Coating: A UV-curable resin was coated onto the outer surface of the fourth printing layer, followed by UV curing (UV wavelength 365 nm, irradiation intensity 100 mW / cm²). 2 S5. Molding and assembly: The printed upper body and the sole are bonded together with polyurethane hot melt adhesive. The bonding temperature is 135℃, the bonding pressure is 0.3MPa, and the holding time is 45s to obtain a shoe with an aurora upper.

[0030] Example 2:

[0031] A shoe with an aurora-like upper includes a sole, an upper body, and an aurora printing layer. The upper body is made of polyester fiber mesh (0.1 mm pore size, 80 g / m² weight) and is fixedly connected to the upper surface of the sole. A base layer (made of polyurethane resin, 0.01 mm thick) is provided between the upper body and the aurora printing layer. The aurora printing layer covers the outer surface of the base layer and is formed by cross-printing of a first printing layer (cyan ink, 0.005 mm thick), a second printing layer (magenta ink, 0.005 mm thick), a third printing layer (yellow ink, 0.005 mm thick), and a fourth printing layer (transparent photochromic ink, 0.005 mm thick), with a total thickness of 0.02 mm. A protective layer (made of UV-curable resin, 0.01 mm thick) is provided on the outer surface of the aurora printing layer.

[0032] The manufacturing method includes the following steps: S1, Pre-treatment of the shoe upper: The polyester fiber mesh is ultrasonically cleaned with a neutral detergent aqueous solution (ultrasonic frequency 40kHz, cleaning time 10min), then dried at 50℃ for 20min, and then subjected to plasma surface modification treatment (modification power 300W, treatment time 30s); S2, Base coating application: A polyurethane resin base coating is applied to the outer surface of the pre-treated shoe upper, and after coating, it is dried at 60℃ for 15min to form the base coating; S3, Four-color cross printing: Four independent meshes are used... Four basic color inks were printed on a 120-mesh plate to form the first to fourth printing layers. Adjacent layers were dried at 70°C for 10 minutes between printings, with a printing pressure of 0.3 MPa. The transparent photochromic ink consisted of the following components by weight: 30 parts acrylic resin, 10 parts photochromic pigment, 2 parts dispersant, 1 part defoamer, and 15 parts diluent. S4, Protective Layer Coating: A UV-curable resin was coated onto the outer surface of the fourth printing layer, followed by UV curing (UV wavelength 365 nm, irradiation intensity 80 mW / cm²). 2 S5. Molding and assembly: The printed upper body and the sole are bonded together with polyurethane hot melt adhesive. The bonding temperature is 120℃, the bonding pressure is 0.2MPa, and the holding time is 30s to obtain a shoe with an aurora upper.

[0033] Example 3:

[0034] A shoe with an aurora-like upper includes a sole, an upper body, and an aurora printing layer. The upper body is made of polyester fiber mesh (0.3mm aperture, 120g / m² weight) and is fixedly connected to the upper surface of the sole. A base layer (made of polyurethane resin, 0.03mm thick) is provided between the upper body and the aurora printing layer. The aurora printing layer covers the outer surface of the base layer and is formed by cross-printing a first printing layer (cyan ink, 0.02mm thick), a second printing layer (magenta ink, 0.02mm thick), a third printing layer (yellow ink, 0.02mm thick), and a fourth printing layer (transparent photochromic ink, 0.01mm thick), with a total thickness of 0.08mm. A protective layer (made of UV-curable resin, 0.02mm thick) is provided on the outer surface of the aurora printing layer.

[0035] The manufacturing method includes the following steps: S1, Pre-treatment of the shoe upper: The polyester fiber mesh is ultrasonically cleaned with a neutral detergent aqueous solution (ultrasonic frequency 60kHz, cleaning time 15min), then dried at 70℃ for 30min, and then subjected to plasma surface modification treatment (modification power 500W, treatment time 60s); S2, Base coating application: A polyurethane resin base coating is applied to the outer surface of the pre-treated shoe upper, and after coating, it is dried at 80℃ for 30min to form the base coating; S3, Four-color cross printing: Four independent meshes are used... Four basic color inks were printed on a 200-mesh plate, forming the first to fourth printing layers. Adjacent layers were dried at 90°C for 20 minutes between printings, with a printing pressure of 0.5 MPa. The transparent photochromic ink consisted of the following components by weight: 50 parts acrylic resin, 20 parts photochromic pigment, 5 parts dispersant, 3 parts defoamer, and 30 parts diluent. S4, Protective Layer Coating: A UV-curable resin was coated onto the outer surface of the fourth printing layer, followed by UV curing (UV wavelength 365 nm, irradiation intensity 120 mW / cm²). 2 S5, Curing time 5s), forming a protective layer; S5, Molding and assembly: The printed upper body and the sole are fixed by sewing to obtain a shoe with an aurora upper.

[0036] Example 4:

[0037] A shoe with an aurora-like upper includes a sole, an upper body, and an aurora printing layer. The upper body is made of polyester fiber mesh (0.15mm aperture, 90g / m² weight) and is fixedly connected to the upper surface of the sole. A base layer (made of polyurethane resin, 0.015mm thick) is provided between the upper body and the aurora printing layer. The aurora printing layer covers the outer surface of the base layer and is formed by cross-printing a first printing layer (cyan ink, 0.012mm thick), a second printing layer (magenta ink, 0.012mm thick), a third printing layer (yellow ink, 0.012mm thick), and a fourth printing layer (transparent photochromic ink, 0.006mm thick), with a total thickness of 0.052mm. A protective layer (made of UV-curable resin, 0.012mm thick) is provided on the outer surface of the aurora printing layer.

[0038] The manufacturing method includes the following steps: S1, Pre-treatment of the shoe upper: The polyester fiber mesh is ultrasonically cleaned with a neutral detergent aqueous solution (ultrasonic frequency 45kHz, cleaning time 13min), then dried at 55℃ for 22min, and then subjected to plasma surface modification treatment (modification power 350W, treatment time 40s); S2, Base coating application: A polyurethane resin base coating is applied to the outer surface of the pre-treated shoe upper, and after coating, it is dried at 65℃ for 20min to form the base coating; S3, Four-color cross printing: Four independent meshes are used... Four base color inks were printed on a 150-mesh plate to form the first to fourth printing layers. Adjacent layers were dried at 75°C for 16 minutes between printings, with a printing pressure of 0.35 MPa. The transparent photochromic ink consisted of the following components by weight: 35 parts acrylic resin, 12 parts photochromic pigment, 3 parts dispersant, 2 parts defoamer, and 20 parts diluent. S4, Protective Layer Coating: A UV-curable resin was coated onto the outer surface of the fourth printing layer, followed by UV curing (UV wavelength 365 nm, irradiation intensity 90 mW / cm²). 2 S5. Molding and assembly: The printed upper body and the sole are bonded together with polyurethane hot melt adhesive. The bonding temperature is 130℃, the bonding pressure is 0.25MPa, and the holding time is 40s to obtain a shoe with an aurora upper.

[0039] Comparative Example 1 (using only a single optically variable ink, without four-color cross-printing)

[0040] A shoe with an aurora-like upper includes a sole, an upper body, and an aurora printing layer. The materials and parameters of the upper body, the bottom coating, and the protective layer are the same as in Example 1. The aurora printing layer is formed by printing with a single transparent photochromic ink and has a thickness of 0.048 mm. In the manufacturing method, except that step S3 is changed to printing with a single transparent photochromic ink (the printing parameters are the same as in Example 1), the other steps and parameters are exactly the same as in Example 1.

[0041] Comparative Example 2 (without plasma pretreatment of the shoe upper):

[0042] A shoe with an aurora-like upper has a structure and component parameters that are completely identical to those in Example 1. In the manufacturing method, step S1 only involves cleaning and drying the polyester fiber mesh, omitting the plasma surface modification treatment; the remaining steps and parameters are exactly the same as in Example 1.

[0043] Comparative Example 3 (undercoat layer omitted):

[0044] A shoe with an aurora-like upper includes a sole, an upper body, and an aurora printing layer. The materials and parameters of the upper body, the aurora printing layer, and the protective layer are the same as in Example 1. The base coat is omitted, and the aurora printing layer is directly applied to the outer surface of the upper body. In the manufacturing method, step S2 (base coat application) is omitted, and the remaining steps and parameters are exactly the same as in Example 1.

[0045] Comparative Example 4 (protective layer omitted):

[0046] A shoe with an aurora-like upper includes a sole, an upper body, and an aurora printing layer. The materials and parameters of the upper body, the sole coating, and the aurora printing layer are the same as in Example 1; the protective layer is omitted. In the manufacturing method, step S4, the protective layer coating, is omitted, while the remaining steps and parameters are exactly the same as in Example 1.

[0047] Performance tests were conducted on the aurora-patterned shoes prepared in the four embodiments and four comparative examples described above. The test items and methods are as follows: 1. Aurora visual effect: Ten professional evaluators scored the richness of the aurora colors and the visual stability of the shoe upper (out of 10 points, average score was taken); 2. Adhesion firmness: A tape peeling test was used, and the degree of printing layer peeling was observed after the test, and it was divided into 5 levels (Level 5: no peeling; Level 4: very little peeling; Level 3: little peeling; Level 2: more peeling; Level 1: a lot of peeling); 3. Abrasion resistance: A Martindale abrasion tester was used, and the test condition was 10,000 cycles of friction. The wear of the aurora layer on the shoe upper was observed, and it was divided into 5 levels (Level 5: no wear; Level 4: very slight wear; Level 3: slight wear; Level 2: significant wear; Level 1: severe wear); 4. Breathability: The air permeability of the shoe upper was tested using an air permeability tester (unit: mm / s). The test results are shown in Table 1 below.

[0048]

[0049] Table 1

[0050] The test results above show that the aurora visual effect scores of Examples 1-4 are all above 9.2 points, significantly higher than Comparative Example 1 (single optically variable ink printing), proving that the design of the aurora printing layer formed by four-color cross-printing in this invention can effectively improve the richness and visual stability of aurora colors. The adhesion strength of Examples 1-4 all reach level 5, and the wear resistance reaches level 4 or above, while the adhesion strength of Comparative Example 2 (excluding plasma pretreatment) and Comparative Example 3 (excluding the bottom coating) is only level 2-3, and the wear resistance is level 3. The wear resistance of Comparative Example 4 (excluding the protective layer) is only level 2. This proves that the present invention can significantly improve the adhesion strength and wear resistance of the shoe upper through the synergistic effect of the shoe upper body pretreatment, the bottom coating and the protective layer. At the same time, the air permeability of Examples 1-4 is all maintained above 25mm / s, with good air permeability, and there is no significant difference from the comparative examples. This shows that the technical design of the present invention improves the decorative and structural stability without sacrificing the air permeability of the shoe upper. In summary, the shoe with an aurora upper and its manufacturing method of the present invention can balance decoration, structural stability and wearing comfort, and have significant beneficial effects.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shoe with an aurora-like upper, characterized in that, The shoe includes a sole, an upper body, and an aurora printing layer. The upper body is fixedly connected to the upper surface of the sole, and the aurora printing layer covers the outer surface of the upper body. The aurora printing layer is formed by cross-printing four basic color inks, namely cyan ink, magenta ink, yellow ink, and transparent photochromic ink. The thickness of the aurora printing layer is 0.02mm-0.08mm.

2. The shoe with an aurora-like upper according to claim 1, characterized in that, The upper body is made of polyester fiber mesh with a pore size of 0.1mm-0.3mm and a weight of 80g / ㎡-120g / ㎡.

3. The shoe with an aurora-like upper according to claim 1, characterized in that, The aurora printing layer includes a first printing layer, a second printing layer, a third printing layer, and a fourth printing layer stacked sequentially. The first printing layer is formed by printing with cyan ink, the second printing layer is formed by printing with magenta ink, the third printing layer is formed by printing with yellow ink, and the fourth printing layer is formed by printing with transparent optically variable ink.

4. The shoe with an aurora-like upper according to claim 3, characterized in that, The thickness of the first, second, and third printing layers is 0.005mm-0.02mm, and the thickness of the fourth printing layer is 0.005mm-0.01mm.

5. The shoe with an aurora-like upper according to claim 1, characterized in that, A base coating is also provided between the shoe upper body and the aurora printing layer. The base coating is made of polyurethane resin and has a thickness of 0.01mm-0.03mm.

6. The shoe with an aurora-like upper according to claim 1, characterized in that, The outer surface of the aurora printing layer is also provided with a protective layer, which is made of ultraviolet-cured resin and has a thickness of 0.01mm-0.02mm.

7. A method for manufacturing a shoe with an aurora-like upper, for manufacturing the shoe with an aurora-like upper as described in any one of claims 1-6, characterized in that, Includes the following steps: S1. Pretreatment of shoe upper body: The polyester fiber mesh is cleaned and dried, and then subjected to plasma surface modification treatment. The modification treatment power is 300W-500W and the treatment time is 30s-60s. S2. Base coat application: Apply polyurethane resin base coat to the outer surface of the pretreated shoe upper. After application, dry at 60℃-80℃ for 15-30 minutes to form the base coat. S3, Four-color cross printing: Four independent screens are used to print four basic color inks in sequence to form the first printing layer, the second printing layer, the third printing layer and the fourth printing layer. The printing layers are dried at 70℃-90℃ for 10min-20min between printing. The mesh count of the printing screen is 120-200 mesh and the printing pressure is 0.3MPa-0.5MPa. S4. Protective Layer Coating: A UV-curable resin is coated onto the outer surface of the fourth printed layer, followed by UV curing with a wavelength of 365nm and an intensity of 80mW / cm². 2 -120mW / cm 2 The curing time is 3-5 seconds, forming a protective layer; S5. Molding and Assembly: The printed upper body is sewn or glued to the sole to obtain a shoe with an aurora upper.

8. The manufacturing method according to claim 7, characterized in that, In step S1, the cleaning is performed using a neutral detergent aqueous solution with ultrasonic cleaning at a frequency of 40kHz-60kHz and a cleaning time of 10min-15min. The drying temperature is 50℃-70℃ and the drying time is 20min-30min.

9. The manufacturing method according to claim 7, characterized in that, In step S3, the ink is composed of the following components by weight: 30-50 parts acrylic resin, 10-20 parts photochromic pigment, 2-5 parts dispersant, 1-3 parts defoamer, and 15-30 parts diluent.

10. The manufacturing method according to claim 7, characterized in that, In step S5, if adhesive bonding is used, the adhesive used is polyurethane hot melt adhesive, the bonding temperature is 120℃-150℃, the bonding pressure is 0.2MPa-0.4MPa, and the holding time is 30s-60s.

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