A down jacket fabric with a multi-mesh structure

Abstract

This invention relates to a multi-mesh structure down jacket fabric, belonging to the field of garment fabric processing technology. Specifically, it relates to a multi-mesh structure down jacket fabric, comprising a mesh-like anti-shrinkage fabric, modified viscose fiber, and a highly breathable fiber layer. The mesh-like anti-shrinkage fabric is made of 65%-80% high-elasticity fiber, 10%-15% CoolMax fiber, and 5%-25% modified melamine-formaldehyde resin by weight ratio. In this invention, by adding modified viscose fiber to the fabric, the pore size of the modified fiber increases, the crystallinity decreases, and the fiber becomes softer, thus improving the fabric's stability, softness, and antibacterial properties. Through multiple pressurization processes during weaving of the mesh-like anti-shrinkage fabric and modified viscose fiber, the modified melamine-formaldehyde resin and viscose fiber can expand to the maximum extent, significantly improving the fluffiness and softness of the fabric fibers, thereby greatly improving the softness of the inner fiber fabric, making it easier to wash, and extending its service life.

Description

Technical Field

[0001] This invention belongs to the field of clothing fabric processing technology, and specifically relates to a down jacket fabric with a multi-mesh structure. Background Technology

[0002] Fabric is the primary material used to make clothing. As one of the three essential elements of clothing, fabric not only interprets the style and characteristics of clothing but also directly influences the color and shape of the garment. Furthermore, depending on the intended use, different requirements exist for the mechanical and chemical properties of the fabric.

[0003] Most existing down jackets have three layers of insulation: an inner layer of warm down fabric with a waterproof and breathable membrane, and another layer of functional fabric on the other side of the membrane. However, for certain groups, the inner layer of the down jacket needs to have excellent breathability. As a result, down jackets with a mesh inner layer have appeared on the market, such as sports down jackets. Athletes need to stay warm while also having good breathability during warm-up exercises. Although these down jackets have excellent breathability in specific situations, in actual use, the mesh inner layer is prone to accumulating dust, loose threads, etc., and is difficult to clean. The mesh fabric is also prone to damage after repeated washing, which is obviously inconvenient. Therefore, there is an urgent need to design a down jacket fabric with a multi-mesh structure for use when a good breathability is required in the inner layer under specific conditions. Summary of the Invention

[0004] The purpose of this invention is to provide a down jacket fabric with a multi-mesh structure, which solves the problems mentioned in the background art such as the difficulty in cleaning, poor washability, and short service life of existing breathable mesh inner down jacket fabrics.

[0005] A down jacket fabric with a multi-mesh structure includes a mesh-like shrink-resistant fabric, modified viscose fiber, and a highly breathable fiber layer; wherein the mesh-like shrink-resistant fabric is made of 65%-80% high-elasticity fiber, 10%-15% CoolMax fiber, and 5%-25% modified melamine-formaldehyde resin by weight; wherein the mesh-like shrink-resistant fabric and the modified viscose fiber need to undergo at least two compression molding processes during weaving; wherein, by weight percentage of raw materials, the modified viscose fiber accounts for 15%-30% of the total weight of the down jacket fabric.

[0006] As a further optimization of the present invention, the modified viscose fiber preparation step includes: placing cotton fibers in a sealed container, filling it with a modifying medium, pressurizing it to the modifying pressure and then releasing the pressure, removing the modifying medium, and obtaining modified viscose fibers.

[0007] As a further optimization of the present invention, the modified medium is specifically liquid ammonia or graphene.

[0008] As a further optimization of the present invention, the pressure value in the pressure molding step is 45-55 kPa, and the duration of a single pressure application is 1.5-2 h.

[0009] As a further optimization of the present invention, the modified melamine resin is prepared by modifying melamine-formaldehyde resin with organosilicon, specifically including:

[0010] Melamine, paraformaldehyde, and organosilicon were mixed and stirred. The pH of the system was adjusted to 7-8.5 using sodium hydroxide aqueous solution as a catalyst. The mixture was heated to 75-90℃ with stirring, and polyvinyl alcohol aqueous solution was added. Then, it was cured with hydrochloric acid to obtain modified melamine-formaldehyde resin.

[0011] As a further optimization of the present invention, in the above steps, the mass ratio of melamine, paraformaldehyde and organosilicon is 1:1.2:1.5.

[0012] As a further optimization of the present invention, the highly breathable fiber layer is composed of water-based silicone resin, nano-sized short fibers and compatibilizer, and is made by casting method.

[0013] As a further optimization of the present invention, the compatibilizer is either an aqueous polyurethane emulsion or a polypropylene grafted with maleic anhydride.

[0014] The beneficial effects of this invention are as follows:

[0015] 1) This invention replaces the mesh inner layer fabric in the prior art with a mesh-like anti-shrinkage fabric. In the preparation process, a blend of high-elasticity fiber and CoolMax fiber is used to make full use of the moisture-wicking properties of CoolMax fiber. A certain amount of modified melamine-formaldehyde resin is added. The melamine-formaldehyde resin modified with organosilicon reacts with the imino groups on melamine to form a block structure, allowing organosilicon to enter the macromolecule and increasing the distance between triazine rings. The introduced siloxane bonds are not only very soft, making the melamine-formaldehyde resin softer and reducing its brittleness, so that it can better fit the fabric, but also form a mesh structure with the triazine rings in the resin. The newly formed mesh structure fabric replaces the mesh fabric of the prior art, which is obviously more resistant to washing and less prone to dust adhesion.

[0016] 2) In this invention, by adding modified viscose fiber to the fabric, the fiber porosity increases, the crystallinity decreases, and the fiber becomes softer after crystallization modification, thereby improving the stability, softness, and antibacterial properties of the fabric itself.

[0017] 3) In this invention, by applying pressure multiple times during the weaving process of the mesh-like anti-shrinkage fabric and modified viscose fiber, the modified melamine-formaldehyde resin and viscose fiber can expand to the maximum extent, which greatly improves the fluffiness and softness of the fabric fibers, thereby greatly improving the softness of the inner fiber fabric, making it easier to clean and increasing its service life. Detailed Implementation

[0018] The present application will now be described in further detail. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] Example 1

[0020] A down jacket fabric with a multi-mesh structure includes a mesh-like anti-shrink fabric, modified viscose fiber, and a highly breathable fiber layer. The modified viscose fiber preparation steps include: placing cotton fibers in a sealed container, filling it with a modifying medium, pressurizing it to 45 kPa and continuing to pressurize it for 1.5 hours, then releasing the pressure and removing the modifying medium to obtain modified viscose fiber. In this embodiment, the modifying medium is liquid ammonia.

[0021] In this embodiment, the mesh-like anti-shrinkage fabric is made of 65% high-elasticity fiber, 10% CoolMax fiber, and 25% modified melamine-formaldehyde resin by mass ratio. The modified melamine resin is obtained by modifying melamine-formaldehyde resin with organosilicon. Specifically, the process involves mixing and stirring melamine, paraformaldehyde, and organosilicon, adjusting the pH of the system to 7 using sodium hydroxide aqueous solution as a catalyst, heating to 75°C with stirring, adding polyvinyl alcohol aqueous solution, and then curing with hydrochloric acid to obtain the modified melamine-formaldehyde resin. The mass ratio of melamine, paraformaldehyde, and organosilicon is 1:1.2:1.5.

[0022] In this embodiment, the highly breathable fiber layer is composed of water-based silicone resin, nano-sized short fibers, and water-based polyurethane solution, and is manufactured by casting.

[0023] In this embodiment, the mesh-like shrink-resistant fabric and the modified viscose fiber need to undergo two pressure molding processes during weaving;

[0024] In this embodiment, the modified viscose fiber accounts for 15% of the total weight of the down jacket fabric, based on the percentage of raw material weight.

[0025] Example 2

[0026] A down jacket fabric with a multi-mesh structure includes a mesh-like anti-shrink fabric, modified viscose fiber, and a highly breathable fiber layer. The modified viscose fiber preparation steps include: placing cotton fibers in a sealed container, filling it with a modifying medium, pressurizing it to 50 kPa and continuing to pressurize it for 1.8 hours, then releasing the pressure and removing the modifying medium to obtain modified viscose fiber. In this embodiment, the modifying medium is graphene.

[0027] In this embodiment, the mesh-like anti-shrinkage fabric is made of 70% high-elasticity fiber, 15% CoolMax fiber, and 15% modified melamine-formaldehyde resin by mass ratio. The modified melamine resin is obtained by modifying melamine-formaldehyde resin with organosilicon. Specifically, the process involves mixing and stirring melamine, paraformaldehyde, and organosilicon, adjusting the pH of the system to 8 using sodium hydroxide aqueous solution as a catalyst, heating to 80°C with stirring, adding polyvinyl alcohol aqueous solution, and then curing with hydrochloric acid to obtain the modified melamine-formaldehyde resin. The mass ratio of melamine, paraformaldehyde, and organosilicon is 1:1.2:1.5.

[0028] In this embodiment, the highly breathable fiber layer is composed of water-based silicone resin, nano-sized short fibers, and polypropylene grafted with maleic anhydride, and is manufactured using a casting method.

[0029] In this embodiment, the mesh-like shrink-resistant fabric and modified viscose fiber need to undergo three compression molding processes during weaving;

[0030] In this embodiment, the modified viscose fiber accounts for 20% of the total weight of the down jacket fabric, based on the percentage of raw material weight.

[0031] Example 3

[0032] A down jacket fabric with a multi-mesh structure includes a mesh-like anti-shrink fabric, modified viscose fiber, and a highly breathable fiber layer. The modified viscose fiber preparation steps include: placing cotton fibers in a sealed container, filling it with a modifying medium, pressurizing it to 55 kPa and continuing to pressurize it for 2 hours, then releasing the pressure and removing the modifying medium to obtain modified viscose fiber. In this embodiment, the modifying medium is liquid ammonia.

[0033] In this embodiment, the mesh-like anti-shrinkage fabric is made of 80% high-elasticity fiber, 10% CoolMax fiber, and 10% modified melamine-formaldehyde resin by mass ratio. The modified melamine resin is obtained by modifying melamine-formaldehyde resin with organosilicon. Specifically, the process involves mixing and stirring melamine, paraformaldehyde, and organosilicon, adjusting the pH of the system to 8.5 using sodium hydroxide aqueous solution as a catalyst, heating to 85°C with stirring, adding polyvinyl alcohol aqueous solution, and then curing with hydrochloric acid to obtain the modified melamine-formaldehyde resin. The mass ratio of melamine, paraformaldehyde, and organosilicon is 1:1.2:1.5.

[0034] In this embodiment, the highly breathable fiber layer is composed of water-based silicone resin, nano-sized short fibers, and water-based polyurethane solution, and is manufactured by casting.

[0035] In this embodiment, the mesh-like shrink-resistant fabric and modified viscose fiber need to undergo four pressure molding processes during weaving;

[0036] In this embodiment, the modified viscose fiber accounts for 25% of the total weight of the down jacket fabric, based on the percentage of raw material weight.

[0037] Example 4

[0038] A down jacket fabric with a multi-mesh structure includes a mesh-like anti-shrink fabric, modified viscose fiber, and a highly breathable fiber layer. The modified viscose fiber preparation steps include: placing cotton fibers in a sealed container, filling it with a modifying medium, pressurizing it to 55 kPa and continuing to pressurize it for 2 hours, then releasing the pressure and removing the modifying medium to obtain modified viscose fiber. In this embodiment, the modifying medium is graphene.

[0039] In this embodiment, the mesh-like anti-shrinkage fabric is made of 80% high-elasticity fiber, 15% CoolMax fiber, and 5% modified melamine-formaldehyde resin by mass ratio. The modified melamine resin is obtained by modifying melamine-formaldehyde resin with organosilicon. Specifically, the process involves mixing and stirring melamine, paraformaldehyde, and organosilicon, adjusting the pH of the system to 8.5 using sodium hydroxide aqueous solution as a catalyst, heating to 90°C with stirring, adding polyvinyl alcohol aqueous solution, and then curing with hydrochloric acid to obtain the modified melamine-formaldehyde resin. The mass ratio of melamine, paraformaldehyde, and organosilicon is 1:1.2:1.5.

[0040] In this embodiment, the highly breathable fiber layer is composed of water-based silicone resin, nano-sized short fibers, and polypropylene grafted with maleic anhydride, and is manufactured using a casting method.

[0041] In this embodiment, the mesh-like shrink-resistant fabric and modified viscose fiber need to undergo 5 compression molding processes during weaving;

[0042] In this embodiment, the modified viscose fiber accounts for 30% of the total weight of the down jacket fabric, based on the percentage of raw material weight.

[0043] Comparative Example 1

[0044] A multi-mesh structure down jacket fabric, the only difference between this comparative example and Example 1 is that the mesh-like shrink-resistant fabric is made of an equal mass ratio of unmodified melamine-formaldehyde resin; specifically:

[0045] A down jacket fabric with a multi-mesh structure includes a mesh-like anti-shrink fabric, modified viscose fiber, and a highly breathable fiber layer. The modified viscose fiber preparation steps include: placing cotton fibers in a sealed container, filling it with a modifying medium, pressurizing it to 45 kPa and continuing to pressurize it for 1.5 hours, then releasing the pressure and removing the modifying medium to obtain modified viscose fiber. In this embodiment, the modifying medium is liquid ammonia.

[0046] In this comparative example, the mesh-like anti-shrinkage fabric is made of 65% high-elasticity fiber, 10% CoolMax fiber, and 25% melamine-formaldehyde resin by mass ratio; in this embodiment, the high-breathability fiber layer is composed of water-based silicone resin, nano-sized short fibers, and water-based polyurethane solution, and is made by casting method.

[0047] In this comparative example, the mesh-like shrink-resistant fabric and the modified viscose fiber need to undergo two compression molding processes during weaving;

[0048] In this comparative example, modified viscose fiber accounts for 15% of the total weight of the down jacket fabric, based on the percentage of raw material weight.

[0049] Comparative Example 2

[0050] A multi-mesh structure down jacket fabric, the only difference between this comparative example and Example 2 is that the modified viscose fiber in the down jacket fabric is replaced with an equal mass ratio of unmodified viscose fiber; specifically:

[0051] A down jacket fabric with a multi-mesh structure includes a mesh-like shrink-resistant fabric, viscose fiber, and a highly breathable fiber layer.

[0052] In this comparative example, the mesh-like anti-shrinkage fabric is made of 70% high-elasticity fiber, 15% CoolMax fiber, and 15% modified melamine-formaldehyde resin by mass ratio. The modified melamine resin is obtained by modifying melamine-formaldehyde resin with organosilicon. Specifically, melamine, paraformaldehyde, and organosilicon are mixed and stirred, and the pH of the system is adjusted to 8 using sodium hydroxide aqueous solution as a catalyst. The mixture is then heated to 80°C with stirring, polyvinyl alcohol aqueous solution is added, and then cured with hydrochloric acid to obtain the modified melamine-formaldehyde resin. The mass ratio of melamine, paraformaldehyde, and organosilicon is 1:1.2:1.5.

[0053] In this comparative example, the highly breathable fiber layer is composed of water-based silicone resin, nano-sized short fibers, and polypropylene grafted with maleic anhydride, and is made by casting.

[0054] In this comparative example, the mesh-like shrink-resistant fabric and the modified viscose fiber need to undergo three compression molding processes during weaving.

[0055] In this comparative example, viscose fiber accounts for 20% of the total weight of the down jacket fabric, based on the percentage of raw material weight.

[0056] Comparative Example 3

[0057] A multi-mesh structure down jacket fabric, the only difference between this comparative example and Example 3 is that the mesh-like shrink-resistant fabric and modified viscose fiber are not subjected to pressure molding during weaving; specifically:

[0058] A down jacket fabric with a multi-mesh structure includes a mesh-like anti-shrink fabric, modified viscose fiber, and a highly breathable fiber layer. The modified viscose fiber preparation steps include: placing cotton fibers in a sealed container, filling it with a modifying medium, pressurizing it to 55 kPa and continuing to pressurize it for 2 hours, then releasing the pressure and removing the modifying medium to obtain modified viscose fiber. In this comparative example, the modifying medium is liquid ammonia.

[0059] In this comparative example, the mesh-like anti-shrinkage fabric is made of 80% high-elasticity fiber, 10% CoolMax fiber, and 10% modified melamine-formaldehyde resin by mass ratio. The modified melamine resin is obtained by modifying melamine-formaldehyde resin with organosilicon. Specifically, melamine, paraformaldehyde, and organosilicon are mixed and stirred, and the pH of the system is adjusted to 8.5 using sodium hydroxide aqueous solution as a catalyst. The mixture is then heated to 85°C with stirring, and polyvinyl alcohol aqueous solution is added. Finally, it is cured with hydrochloric acid to obtain the modified melamine-formaldehyde resin. The mass ratio of melamine, paraformaldehyde, and organosilicon is 1:1.2:1.5.

[0060] In this comparative example, the highly breathable fiber layer is composed of water-based silicone resin, nano-sized short fibers, and water-based polyurethane solution, and is made by casting.

[0061] In this comparative example, modified viscose fiber accounts for 25% of the total weight of the down jacket fabric, based on the percentage of raw material weight.

[0062] Comparative Example 4

[0063] A multi-mesh structure down jacket fabric, the only difference between this comparative example and Example 4 is that viscose fiber is not added to the base material of the down jacket fabric; specifically:

[0064] A down jacket fabric with a multi-mesh structure includes a mesh-like anti-shrinkage fabric and a highly breathable fiber layer. In this comparative example, the mesh-like anti-shrinkage fabric is made of 80% high-elasticity fiber, 15% CoolMax fiber, and 5% modified melamine-formaldehyde resin by mass ratio. The modified melamine resin is obtained by modifying melamine-formaldehyde resin with organosilicon, specifically by mixing and stirring melamine, paraformaldehyde, and organosilicon, adjusting the pH of the system to 8.5 using sodium hydroxide aqueous solution as a catalyst, heating to 90°C under stirring, adding polyvinyl alcohol aqueous solution, and then curing with hydrochloric acid to obtain the modified melamine-formaldehyde resin. The mass ratio of melamine, paraformaldehyde, and organosilicon is 1:1.2:1.5.

[0065] In this comparative example, the highly breathable fiber layer is composed of water-based silicone resin, nano-sized short fibers, and polypropylene grafted with maleic anhydride, and is made by casting.

[0066] In this comparative example, the mesh-like shrink-resistant fabric needs to undergo 5 compression molding processes during weaving.

[0067] To further illustrate the technological advancements of this invention, experiments are now conducted.

[0068] Eight groups of down jacket fabric samples with multi-mesh structures were prepared using the methods described in Examples 1-4 and Comparative Examples 1-4, respectively. Performance tests were then conducted on these samples, including:

[0069] (1) Breathability test: Refer to the standard GB / T5453-1997 Determination of air permeability of textile fabrics to test the air permeability of each down jacket fabric sample. The test results are expressed as air permeability (mm / s).

[0070] (2) Thermal Insulation Performance Test: The thermal insulation performance was tested according to the international standard ASTM D 1518—2014 "Method for Testing Thermal Resistance of Cotton Wadding Systems (Hot Plate Method)", which is applicable to cotton wadding and multi-layer cotton wadding / fabric assemblies that have thermal conductivity in the range of 0.1 W / m. 2 K ~ 1.5W / m 2 The test was conducted between K and 50 mm (with sample thickness not exceeding 50 mm) to assess the warmth retention of the down jacket fabric before and after washing.

[0071] The data obtained from the above experiment are shown in the table below:

[0072]

[0073] As can be seen from the table above, the down jacket fabric with the porous structure prepared in this invention exhibits significantly improved performance in all aspects, and its heat retention performance remains ≥1.22W / m² even after multiple washes. 2•K, with a breathability ≥358mm / s, and a significantly smoother feel, making it more comfortable to wear next to the skin. Comparisons of various proportions show that adding modified viscose fiber to the fabric significantly improves its breathability, feel, and breathability. Furthermore, replacing the existing mesh inner layer with a mesh-like anti-shrinkage fabric significantly enhances breathability, washability, and lifespan. Applying pressure during the weaving process of the mesh-like fabric and modified viscose fiber prevents the mesh-like fabric from detaching and aging after repeated washing, thus extending the fabric's lifespan.

[0074] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A down jacket fabric with a multi-mesh structure, characterized in that: The fabric comprises a mesh-like anti-shrinkage fabric, modified viscose fiber, and a highly breathable fiber layer. The mesh-like anti-shrinkage fabric is made of 65%-80% high-elasticity fiber, 10%-15% CoolMax fiber, and 5%-25% modified melamine-formaldehyde resin by weight. The mesh-like anti-shrinkage fabric and the modified viscose fiber undergo at least two compression molding processes during weaving. The modified viscose fiber accounts for 15%-30% of the total weight of the down jacket fabric, based on the percentage of raw materials by weight. The modified viscose fiber preparation steps include: placing cotton fibers in a sealed container, filling it with a modifying medium, pressurizing it to the modifying pressure, releasing the pressure, removing the modifying medium, and obtaining the modified viscose fiber. The modified medium is specifically graphene; The modified melamine resin is prepared by modifying melamine-formaldehyde resin with organosilicon, specifically including: Melamine, paraformaldehyde, and organosilicon were mixed and stirred. Sodium hydroxide aqueous solution was used as a catalyst to adjust the pH of the system to 7-8.

5. The system was heated to 75℃-90℃ with stirring, polyvinyl alcohol aqueous solution was added, and then cured with hydrochloric acid to obtain modified melamine-formaldehyde resin. In the above steps, the mass ratio of melamine, paraformaldehyde, and organosilicon is 1:1.2:1.5; The pressure value in the pressure molding step is 45-55 kPa, and the duration of a single pressure application is 1.5-2 hours. The highly breathable fiber layer is composed of water-based silicone resin, nano-sized short fibers, and compatibilizer, and is manufactured using a casting method.

2. The down jacket fabric with a multi-mesh structure according to claim 1, characterized in that: The compatibilizer is either an aqueous polyurethane emulsion or a polypropylene grafted with maleic anhydride.

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