Gradient twist composite structure yarn and fabric

Abstract

The utility model discloses a gradient twist composite structure yarn and fabric, the gradient twist composite structure yarn comprises a core layer, a middle layer and an outer layer; the middle layer wraps the outer surface of the core layer in a spiral structure opposite to the twisting direction of the core layer, and a plurality of micro-channels are formed between the middle layer and the core layer; the outer layer wraps the surface of the middle layer in a spiral structure; the twist degrees of the core layer, the middle layer and the outer layer are gradually increased in sequence. The yarn with the composite structure is formed in the mode of reverse spiral wrapping and gradient twist from inside to outside, and the purposes of moisture absorption and quick drying of the yarn are achieved.

Description

Technical Field

[0001] This utility model relates to the field of yarn technology, and in particular to gradient twist composite structure yarns and fabrics. Background Technology

[0002] Currently, most moisture-wicking and quick-drying yarns on the market are made of synthetic fibers. However, moisture-wicking and quick-drying fabrics made of synthetic fibers mainly use irregularly shaped yarns to increase moisture wicking, requiring the addition of a large amount of hydrophilic additives to enhance hydrophilicity, thereby achieving the moisture-wicking and quick-drying function. Quick-drying clothing made from these materials has poor skin-friendliness and breathability, making it less comfortable to wear. Cotton fibers have a natural hollow structure, providing excellent breathability and moisture absorption. However, precisely because pure cotton fabric absorbs water so well, it is not easy to dry, leading to problems such as stickiness when sweating excessively and mold growth in damp environments.

[0003] In view of this, the purpose of this utility model is to provide a new technical solution to solve the existing technical problems. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides a gradient twist composite structure yarn, which solves the problem of poor moisture absorption and quick-drying performance of cotton fabrics.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A gradient twist composite structure yarn includes a core layer, an intermediate layer, and an outer layer;

[0007] The intermediate layer is wrapped around the outer surface of the core layer in a spiral structure opposite to the twisting direction of the core layer, and a number of microchannels are formed between the intermediate layer and the core layer;

[0008] The outer layer is spirally wrapped around the surface of the middle layer;

[0009] The twist of the core layer, the middle layer, and the outer layer increases sequentially.

[0010] In the above structure, the core layer is a low-twist cotton fiber bundle, and the twist of the core layer is 300-400 twists / meter.

[0011] In the above structure, the twist of the intermediate layer is 600-800 twists / meter.

[0012] In the above structure, the twist of the outer layer is 1200-1500 twists / meter.

[0013] In the above structure, the outer layer is wrapped around the surface of the intermediate layer with alternating Z-twist and S-twist directions.

[0014] In the above structure, the core layer, the middle layer and the outer layer are all composed of fine cotton fibers, and the average length of a single fine cotton fiber is 29 mm.

[0015] In the above structure, the core layer has 30S-40S branches, and the intermediate and outer layers have 40S-200S branches.

[0016] This utility model also provides:

[0017] A fabric made from gradient twist composite structure yarn as described above.

[0018] The beneficial effects of this utility model are as follows: This utility model provides a gradient twist composite structure yarn, which is configured as a core layer-middle layer-outer layer composite structure with gradient twist from the inside out. The core layer uses low-twist cotton fiber bundles, and the low twist retains the natural porosity of the cotton fibers, ensuring good moisture absorption capacity. The middle layer uses a reverse spiral wrapping layer with high twist; the high twist wrapping forms micropores between the core layer and the middle layer, ensuring the yarn's directional moisture-wicking ability, and the reverse twist increases structural stability. The Z / S alternating strong twist coating gives the yarn an outer surface with a high-density structure, which is beneficial for accelerating the diffusion of surface moisture, and the alternating twist effectively improves the yarn's tensile strength. Clothing made from fabric using this yarn has moisture-wicking and quick-drying functions, making it ideal for sports and leisure products. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the core layer structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the intermediate layer and core layer structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the outer layer wrapping structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the yarn performance test results of this utility model.

[0024] Reference numerals: 1. Core layer; 2. Intermediate layer; 3. Outer layer. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-4 The present invention will be further described below.

[0026] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0027] Reference Figures 1 to 3 This utility model provides a gradient twist composite structure yarn, including a core layer 1, an intermediate layer 2 and an outer layer 3. The intermediate layer 2 is disposed between the core layer 1 and the outer layer 3, and the intermediate layer 2 is wrapped around the outer surface of the core layer 1 in a spiral structure opposite to the twisting direction of the core layer 1, forming a plurality of microchannels between the intermediate layer 2 and the core layer 1. The outer layer 3 is wrapped around the surface of the intermediate layer 2 in a spiral structure. The twist of the core layer 1, the intermediate layer 2 and the outer layer 3 is arranged in ascending order.

[0028] The core layer 1, middle layer 2, and outer layer 3 have a gradient twist, with the twist increasing from low to high from the inside out, forming different structural layers. Specifically, the core layer 1 uses a lower twist, making the fibers relatively fluffy and retaining some internal gaps, which enhances the wicking effect and facilitates subsequent moisture absorption. At the same time, the cohesion between fibers is relatively small at low twist, providing specific support and moisture storage in the overall composite structure. The middle layer 2 is wrapped around the outer surface of the core layer 1 in a helical structure with the twisting direction opposite to that of the core layer 1. The helical wrapping creates several micropores between the middle layer 2 and the core layer 1, which have a directional moisture-guiding function, facilitating quick drying. The reverse twist wrapping creates a tight and orderly structure on the outside of the core layer 1, enhancing the overall stability of the yarn. This wrapping method, combined with the twist difference, protects and restrains the core layer 1, preventing the fibers from excessively spreading or being damaged by external factors during subsequent processing and use. The outer layer 3 wraps around the middle layer 2 with a higher twist, forming a tight structure on the outermost layer of the yarn. This makes the yarn surface more compact, smooth, and elastic, which is beneficial for achieving moisture absorption and wicking functions. The gradient twist composite structure yarn provided by this invention achieves excellent moisture absorption and quick-drying effects through a purely physical structure / process, without adding any moisture-absorbing or quick-drying additives.

[0029] Furthermore, the core layer 1 is a low-twist cotton fiber bundle, and the twist of the core layer 1 is 300-400 twists / meter; the twist of the middle layer 2 is 600-800 twists / meter; and the twist of the outer layer 3 is 1200-1500 twists / meter.

[0030] Reference Figure 3 In some embodiments, the outer layer 3 is wrapped around the surface of the middle layer 2 with alternating Z-twist and S-twist directions. The outer layer 3 employs alternating Z / S strong twist coating, resulting in a high-density structure on the outermost layer of the yarn, which effectively accelerates the diffusion of surface moisture, thus achieving a quick-drying effect. Furthermore, the alternating Z / S strong twist coating creates a unique mechanical and structural property on the outermost layer of the yarn, enhancing its abrasion resistance and anti-pilling properties to a certain extent, thus extending its service life. The gradient twist, combined with the reverse spiral and alternating twist coating, significantly improves the yarn's moisture absorption, wicking, and quick-drying capabilities.

[0031] In some embodiments, the core layer 1, the middle layer 2, and the outer layer 3 are all composed of fine cotton fibers, that is, the yarn is 100% cotton yarn. The average length of a single fine cotton fiber is 25-32 mm; specifically, in this embodiment, fine cotton with an average length of 29 mm is used.

[0032] Cotton fibers have a natural central structure, offering excellent breathability and moisture absorption. Using 100% cotton is also safer and more environmentally friendly. Fine cotton possesses certain strength, length, and flexibility, which facilitates gradient twisting. Utilizing the properties of cotton fibers, combined with reverse wrapping, alternating Z / S twist, and gradient twist, the yarn's moisture absorption and quick-drying effects are effectively achieved.

[0033] In actual production, ring spinning can be used to produce the core layer 1, the middle layer 2, and the outer layer 3. For example, ring spinning can be used to spin fine cotton fibers into low-twist cotton fiber bundles as the core layer 1, with the twist controlled at 300-400 twists / meter.

[0034] In some implementations, the core layer 1 has 30-40S strands, and the intermediate layer 2 and outer layer 3 have 40S-200S strands.

[0035] The core layer has a low count and large gaps between cotton fibers, resulting in fast moisture absorption; the middle layer 2 and outer layer 3 have high counts, forming a compact structure that can accelerate moisture evaporation through capillary effect, thereby achieving the yarn's moisture absorption and quick-drying effect.

[0036] This utility model also provides:

[0037] A fabric made from gradient twist composite yarns as described above. This fabric can be used in sports and leisure products.

[0038] The gradient twist composite structure yarn and fabric of this invention are prepared using the following method:

[0039] Step S1: Select cotton fiber, using fine cotton;

[0040] Step S2, Core layer 1 spinning: Grey yarn spinning, using ring spinning to spin fine cotton into low-twist cotton fiber bundles, which serve as core layer 1;

[0041] Step S3, spinning the intermediate layer 2: the core layer 1 is spirally wound in the opposite direction using ring spinning to form the intermediate layer 2;

[0042] Step S4, outer layer 3 spinning: The core layer 1 and the middle layer 2 are wrapped with strong twist by alternating Z / S twist using ring spinning to form the outer layer 3, thereby obtaining a gradient twist composite structure yarn for later use.

[0043] Step S5, fabric weaving: Gradient twist composite structure yarn is selected and woven by a circular knitting machine to form the fabric.

[0044] Step S6, singeing: Use a singeing machine to singe both sides of the fabric to burn off the fuzz on the surface of the fabric and make the fabric smooth.

[0045] Step S7, boiling and bleaching: The singed fabric is placed in a container containing a refining agent for boiling, followed by bleaching with caustic soda and hydrogen peroxide, and then washed and dried.

[0046] Step S8, dyeing: Immerse the scalded and bleached fabric in a dyeing vat for dyeing treatment, using reactive dyes.

[0047] Step S9, segmented heat setting: The dyed fabric is immersed in the setting solution, and then the fabric is heat set in segments using a gradient temperature increase of 80℃-120℃-150℃, thereby obtaining a fabric with full moisture absorption and quick-drying properties.

[0048] The segmented heat setting process involves gradually heating the fabric at different temperature stages to induce thermoplastic changes and stabilize the fiber and / or yarn structure. The gradient heating method allows the internal structure of the fabric to gradually adapt to temperature changes, forming a stable microporous structure. These micropores facilitate the realization of moisture absorption and wicking functions. When human sweat and other moisture come into contact with the fabric, they can be quickly transferred and diffused through these micropores, thereby achieving the effect of moisture absorption and quick drying. At the same time, heat setting can also improve the fabric's dimensional stability, hand feel, and other performance characteristics, so that the fabric ultimately meets the various performance index requirements of gradient twist composite structure fabrics.

[0049] According to the requirements for quick-drying performance in GB-T 21655.2-2019, the moisture absorption and quick-drying properties of the plain weave fabric woven from the gradient twist composite structure yarn of this utility model were tested. The data are as follows: Figure 4 As shown in the chart, the test data presented in the chart shows that the gradient twist composite structure yarn has good moisture absorption and quick-drying properties.

[0050] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A gradient twist composite structure yarn, characterized in that: It includes the core layer, the intermediate layer, and the outer layer; The intermediate layer is wrapped around the outer surface of the core layer in a spiral structure opposite to the twisting direction of the core layer, and a number of microchannels are formed between the intermediate layer and the core layer; The outer layer is spirally wrapped around the surface of the middle layer; The twist of the core layer, the middle layer, and the outer layer increases sequentially.

2. The gradient twist composite structure yarn according to claim 1, characterized in that: The core layer is a low-twist cotton fiber bundle with a twist of 300-400 twists / meter.

3. The gradient twist composite structure yarn according to claim 1, characterized in that: The twist of the intermediate layer is 600-800 twists / meter.

4. The gradient twist composite structure yarn according to claim 1, characterized in that: The outer layer has a twist of 1200-1500 twists / meter.

5. The gradient twist composite structure yarn according to claim 1, characterized in that: The outer layer is wrapped around the surface of the intermediate layer with alternating Z-twist and S-twist directions.

6. The gradient twist composite structure yarn according to claim 1, characterized in that: The core layer, middle layer and outer layer are all composed of fine cotton fibers, and the average length of a single fine cotton fiber is 29 mm.

7. The gradient twist composite structure yarn according to claim 1, characterized in that: The core layer has 30S-40S branches, and the intermediate and outer layers have 40S-200S branches.

8. A fabric, characterized in that: It is made from a gradient twist composite structure yarn as described in any one of claims 1-7.

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