Degradable environment-friendly fabric

Abstract

The utility model provides a degradable environment-friendly fabric which comprises a skin layer and an outer layer which are arranged in sequence, warp yarn in the skin layer is skin-friendly yarn, warp yarn of the outer layer is PVA yarn, weft yarn of the skin layer and weft yarn of the outer layer are degradable yarn, the skin layer and the outer layer form binding points through the degradable yarn to achieve connection, and the outer layer is covered with a degradable film. According to the technical scheme, the differential capillary effect is formed by the skin layer and the outer layer, sweat on the skin surface of the human body is rapidly transferred to the outer layer, and the skin layer is formed by weaving the skin-friendly yarn and brings good wearing feeling when being worn. And the degradable film on the outermost layer has a relatively high moisture volatilization speed, so that a dry and comfortable experience is brought to a wearer. The yarns and the film used in the fabric are both degradable materials, so that the fabric is more environment-friendly and meets the future environment-friendly requirement.

Description

Technical Field

[0001] This application relates to the field of textile fabric technology, and in particular to a biodegradable and environmentally friendly fabric. Background Technology

[0002] Bio-based chemical fibers are a type of green fiber, derived from renewable resources, including natural plant and animal fibers, regenerated fibers, and synthetic fibers derived from biomass. They are considered a continuation of natural fibers from the industrial age. Due to their advantages such as sustainable sourcing and environmental friendliness, bio-based chemical fibers have naturally become a current development trend.

[0003] Currently, biodegradable fabrics have relatively poor moisture permeability, and chemical modification methods consume a lot of resources, which does not meet future environmental protection requirements. Therefore, it is of great practical significance to propose a biodegradable and environmentally friendly fabric with good moisture permeability. Utility Model Content

[0004] To address the issue of relatively poor moisture permeability in existing biodegradable fabrics, this application provides a biodegradable and environmentally friendly fabric.

[0005] The biodegradable and environmentally friendly fabric provided in this application adopts the following technical solution:

[0006] A biodegradable and environmentally friendly fabric includes a skin layer and an outer layer arranged sequentially. The warp yarns in the skin layer are skin-friendly yarns, and the warp yarns in the outer layer are PVA yarns. The weft yarns of both the skin layer and the outer layer are biodegradable yarns. The skin layer and the outer layer are connected by forming joints through the biodegradable yarns. The outer layer is covered with a biodegradable film.

[0007] Preferably, the biodegradable yarn comprises a core composed of multiple spirally wound biodegradable polyamide fibers, Tencel fibers, and soybean protein fibers.

[0008] Preferably, the skin-friendly yarn comprises multiple viscose fiber filaments spirally wound together, the fineness of the skin-friendly yarn is 14.5 tex, and the twist of the skin-friendly yarn is 2 twists / 10cm.

[0009] Preferably, the PVA yarn consists of multiple PVA nanofiber filaments spirally wound together, the fineness of the PVA yarn is 13 tex, and the twist of the PVA yarn is 6 twists / 10cm.

[0010] Preferably, the skin layer and the outer layer are woven as one piece, and the fabric structure is a bonded double-layer structure. The skin-friendly yarn is the inner weft, the PVA yarn is the outer weft, and both the outer warp and the inner warp are biodegradable yarns.

[0011] The weft weft point is set to sink, and the warp weft point is set to float. The weft repeat is set from left to right and from top to bottom as follows: float float float sink float sink float sink float float, float sink float sink sink sink sink sink sink sink sink sink, float sink float sink float float float float, sink sink sink sink sink sink sink sink sink sink sink, float sink sink float float float sink sink sink sink sink, float sink sink sink sink sink sink sink sink sink, float float float sink sink sink sink sink sink sink, float float float sink sink sink sink sink sink sink.

[0012] The beneficial effects of this utility model are as follows:

[0013] By employing the above technical solution, the differential capillary effect between the skin layer and the outer layer rapidly transfers sweat from the skin's surface to the outer layer. The skin layer, woven from skin-friendly yarns, provides a comfortable wearing experience. The outermost biodegradable film has a high moisture evaporation rate, keeping the wearer dry. Both the yarns and film used in this fabric are biodegradable, making it more environmentally friendly and compliant with future environmental requirements. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an embodiment of this application;

[0015] Figure 2 This is a cross-sectional view of the biodegradable yarn in the embodiments of this application;

[0016] Figure 3 This is a fabric structure diagram of the skin layer and the outer layer in the embodiments of this application.

[0017] Explanation of reference numerals in the attached diagram: 1. Skin layer; 11. Skin-friendly yarn; 2. Outer layer; 21. PVA yarn; 3. Biodegradable film; 4. Biodegradable yarn; 41. Yarn core; 42. Tencel fiber; 43. Soy protein fiber. Detailed Implementation

[0018] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0019] It will be understood by those skilled in the art that certain well-known structures and their descriptions may be omitted in the accompanying drawings. The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] As attached Figure 1-3The illustrated biodegradable and environmentally friendly fabric includes a skin layer 1 and an outer layer 2 arranged sequentially. The warp yarns in the skin layer 1 are skin-friendly yarns 11, and the warp yarns in the outer layer 2 are PVA yarns 21. The weft yarns of both the skin layer 1 and the outer layer 2 are biodegradable yarns 4. The skin layer 1 and the outer layer 2 are connected by joints formed by the biodegradable yarns. The outer layer 2 is covered with a biodegradable film 3. The biodegradable film 3 is fixed to the surface of the outer layer 2 by hot rolling. The biodegradable film 3 is manufactured by electrospinning after dissolving the organic branched salt TBAC in a polymer PLA solution. Compared with films made from pure PLA solution, the biodegradable film 3 of this embodiment has a higher water content due to the addition of the organic branched salt TBAC, resulting in better hydrophilicity. On the other hand, the organic branched salt TBAC gives the biodegradable film 3 a dendritic structure at the microscopic level, which has a higher specific surface area, further increasing its hydrophilicity while also increasing the rate of water evaporation.

[0021] In some embodiments, the biodegradable yarn 4 includes a yarn core 41 composed of multiple spirally wound biodegradable polyamide fibers, Tencel fibers 42, and soybean protein fibers 43. Tencel fibers 42 are primarily made from renewable beech wood, produced using renewable energy from wood pulp mills in an environmentally friendly manner, and possess excellent skin-friendly softness. Soybean protein fibers 43 are a novel regenerated plant protein fiber made from degreased soybean meal, through the extraction and synthesis of plant globulins. Soybean protein fibers 43 exhibit extremely high elasticity, strong warmth retention, excellent breathability, light weight, sweat absorption and moisture resistance, and softness and comfort. By using soybean protein fibers 43 and Tencel fibers 42 to coat the outer layer of the yarn core 41, the problems of rough hand feel and poor moisture absorption and wicking properties of biodegradable polyamide fibers are solved.

[0022] In some embodiments, the skin-friendly yarn 11 comprises multiple viscose fiber filaments spirally wound together. The fineness of the skin-friendly yarn 11 is 14.5 tex, and the twist is 2 twists / 10cm. Viscose fiber filaments have a soft hand feel and a good luster; they are as soft as cotton and as smooth as silk. Furthermore, viscose fiber filaments have good moisture absorption and breathability. The basic chemical composition of viscose fiber filaments is the same as that of cotton fiber; therefore, some of its properties are similar to cotton fiber. However, its moisture absorption and breathability are better than cotton fiber. The skin-friendly yarn 11, made by twisting viscose fiber filaments, can provide a soft and comfortable feeling when worn without causing stuffiness. Compared to cotton fiber, which has thick cell walls, viscose fiber filaments degrade faster and produce more recyclable products.

[0023] In some embodiments, multiple PVA nanofibers are spirally wound together in a PVA yarn. The fineness of the PVA yarn 21 is 13 tex, and the twist of the PVA yarn 21 is 6 twists / 10cm. The preparation method of the PVA yarn 21 is as follows:

[0024] 1. Weigh a certain amount of PVA powder and put it into a reaction vessel, then add a certain amount of deionized water, let it stand at room temperature and swell for 1 hour; then stir the solution in the reaction vessel at 95°C for 4 hours until the PVA powder is completely dissolved, and a uniform, transparent, bubble-free PVA solution with a mass fraction of 12% is obtained; finally, transfer the solution in the reaction vessel to a storage tank, let it stand at room temperature for 30 minutes, cool it, and set it aside for later use.

[0025] 2. The PVA solution in the storage tank is transported through pipelines to the multi-channel injection pump system in the electrospinning workshop. The syringe needle installed on the injection pump is connected to the positive terminal of the high-voltage power supply, and the receiving roller is grounded as the negative terminal. The distance between the syringe needle and the receiving roller is 12cm, and the high-voltage power supply voltage is set to 15KV. The electrospinning equipment is started, and the PVA solution is stretched and solidified under the action of the high-voltage electric field to form PVA nanofibers, which are then uniformly received onto the receiving roller.

[0026] 3. PVA nanofibers are twisted into PVA yarn 21 by air-jet spinning.

[0027] The breaking elongation of PVA yarn 21 is 10.17%, with an elongation of 64.34 mm, while the breaking elongation of cotton yarn is 5.6%, with an elongation of 28.06 mm. PVA yarn 21 has good elasticity and is not prone to brittle breakage. Using PVA yarn 21 can improve the overall strength of the fabric. At the same time, due to its good biodegradability, it is a green textile.

[0028] When a double-layered fabric is woven using pure synthetic fibers, coarser capillaries form between the fibers in the inner layer and finer capillaries between the fibers in the outer layer. This creates an additional pressure difference at the interface between the two layers, guiding liquid water in the fabric to automatically flow from the inner skin layer 1 to the outer outer layer 2. This results in quick-drying and moisture-wicking properties, known as the differential capillary effect. The additional pressure difference between the inner and outer layers is the condition for the differential capillary effect and the driving force for the automatic flow of liquid water from the inner skin layer 1 to the outer outer layer 2. By adjusting the twist of the skin-friendly yarn 11 and the PVA yarn 21, making the twist of the skin-friendly yarn 11 less than that of the PVA yarn 21 enhances the differential capillary effect. Furthermore, the PVA yarn 21, made of twisted PVA nanofibers, has significantly finer capillaries than the skin-friendly yarn 11, further strengthening the differential capillary effect and improving the fabric's moisture permeability.

[0029] In some embodiments, the skin layer 1 and the outer layer 2 are woven together as one piece, and the fabric structure is a bonded double-layer structure. The skin-friendly yarn 11 is the inner weft, the PVA yarn 21 is the outer weft, and both the outer warp and the inner warp are biodegradable yarns 4.

[0030] The weft weft point is set to sink, and the warp weft point is set to float. The weft repeat is set from left to right and from top to bottom as follows: float float float sink float sink float sink float float, float sink float sink sink sink sink sink sink sink sink sink, float sink float sink float float float float, sink sink sink sink sink sink sink sink sink sink sink, float sink sink float float float sink sink sink sink sink, float sink sink sink sink sink sink sink sink sink, float float float sink sink sink sink sink sink sink, float float float sink sink sink sink sink sink sink.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A biodegradable and environmentally friendly fabric, characterized in that, It includes a skin layer and an outer layer arranged sequentially. The warp yarns in the skin layer are skin-friendly yarns, the warp yarns in the outer layer are PVA yarns, and the weft yarns of both the skin layer and the outer layer are biodegradable yarns. The skin layer and the outer layer are connected by forming joints through the biodegradable yarns, and the outer layer is covered with a biodegradable film.

2. The biodegradable and environmentally friendly fabric according to claim 1, characterized in that, The biodegradable yarn comprises a core composed of multiple spirally wound biodegradable polyamide fibers, Tencel fibers, and soybean protein fibers.

3. The biodegradable and environmentally friendly fabric according to claim 1, characterized in that, The skin-friendly yarn comprises multiple viscose fiber filaments spirally wound together, the fineness of the skin-friendly yarn is 14.5 tex, and the twist of the skin-friendly yarn is 2 twists / 10cm.

4. The biodegradable and environmentally friendly fabric according to claim 1, characterized in that, The PVA yarn consists of multiple PVA nanofibers spirally wound together. The fineness of the PVA yarn is 13 tex, and the twist of the PVA yarn is 6 twists / 10cm.

5. The biodegradable and environmentally friendly fabric according to claim 1, characterized in that, The skin layer and the outer layer are woven together as one piece. The fabric structure is a bonded double-layer structure. The skin-friendly yarn is the inner weft, the PVA yarn is the outer weft, and both the outer warp and the inner warp are biodegradable yarns. The weft weft point is set to sink, and the warp weft point is set to float. The weft repeat is set from left to right and from top to bottom as follows: float float float sink float sink float sink float float, float sink float sink sink sink sink sink sink sink sink sink, float sink float sink float float float float, sink sink sink sink sink sink sink sink sink sink sink, float sink sink float float float sink sink sink sink sink, float sink sink sink sink sink sink sink sink sink, float float float sink sink sink sink sink sink sink, float float float sink sink sink sink sink sink sink.

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