Three-layer composite core-spun linen yarn and application thereof

Abstract

The invention provides a three-layer composite core-spun linen yarn and application thereof, and relates to the technical field of fabric spinning. The three-layer composite core-spun linen yarn comprises a core-spun linen yarn and two winding filaments which are interlaced, wound and twisted outside the core-spun linen yarn; the core-spun linen yarn is composed of a core yarn and a sheath yarn layer, and the sheath yarn layer is formed by winding a plurality of sheath yarns outside the core yarn; the core yarn is a fine denier filament, the sheath yarn is a linen yarn, and the winding filament is a functional chemical fiber filament; the three-layer composite core-spun linen yarn is used for spinning and preparing high-quality and low-defect fabric. The defects in the prior art are overcome, the designed three-layer composite core-spun linen yarn can effectively reduce the problem that hairiness is exposed out of the core-spun linen yarn, the quality of fabric prepared through subsequent spinning is improved, the defect rate is reduced, and the economic benefits of production are improved.

Description

Technical Field

[0001] The invention relates to the technical field of fabric textiles, and in particular to a three-layer composite core-spun linen yarn and applications thereof. Background Art

[0002] Hemp fiber is a bundle of fibers with short fiber length and high stiffness. Unlike natural fibers such as cotton or wool, which are separated into single fibers, it is difficult to spin into a high-proportion yarn with uniform yarn length and smooth appearance. Core-spun hemp yarn is stronger and has better uniform yarn length than ordinary ring-spun hemp yarn, and can be spun finer. Therefore, many fabrics at this stage use core-spun hemp yarn for weaving.

[0003] Existing core-spun linen yarn has the problem of more exposed hairiness. In the actual textile process, when this core-spun linen yarn is used to weave full-width weft-inserted warp knitted fabrics, the weft-laying mechanism behind the machine will lay 18 or 24 weft yarns at the same time (depending on the recent model and the time of manufacture, generally 18 wefts are laid simultaneously for old models, and 24 wefts are laid simultaneously for new models). The spacing between each weft yarn is about 1 cm. Due to the wide width of the weft-inserted warp knitting machine, the slight shaking when laying the weft yarn and the static electricity generated by the friction between the weft yarn and the machine parts will cause the adjacent two weft yarns to partially stick together through the hairiness, causing double weft yarns to enter the weaving area at a certain weft yarn position when sending the weft, and no weft yarns to enter the weaving area at the next weft yarn position, resulting in serious weaving defects. There is currently no better solution to this defect. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a three-layer composite core-spun linen yarn and application thereof. The designed three-layer composite core-spun linen yarn can effectively reduce the problem of exposed hairiness of the core-spun linen yarn, improve the quality of subsequent textile preparation of fabrics, reduce the defect rate, and improve the economic benefits of production.

[0005] To achieve the above objectives, the technical solution of the present invention is implemented through the following technical solutions:

[0006] A three-layer composite core-spun linen yarn comprises a core-spun linen yarn and two winding filaments interlaced and twisted outside the core-spun linen yarn; the core-spun linen yarn consists of a core yarn and a sheath yarn layer, the core yarn is formed by a plurality of sheath yarns wrapped around the outside to form a sheath yarn layer; the core yarn is a fine-denier filament, the sheath yarn is a linen yarn, and the winding filament is a functional chemical fiber filament.

[0007] Preferably, the fineness of the core yarn is 30-75D; the yarn count of the core-spun linen yarn is 10S-40S; and the fineness of the filament is 15-80D.

[0008] Preferably, the angle between the two interlaced and twisted winding filaments on the outside of the core-spun linen yarn is 30-60°.

[0009] Preferably, the linen yarn is any one of pure flax fiber or pure hemp fiber and fibers mixed with staple fibers, and the linen yarn contains more than 50% hemp.

[0010] The three-layer composite core-spun linen yarn is used for weaving and preparing high-quality and low-defect fabrics, and the application method is any one of the following steps:

[0011] S1. Select elastic polyester FDY filament as core yarn and water-soluble fiber as winding filament to prepare three-layer composite core-spun linen yarn, then weave it into fabric, and then use alkaline solution or water to wash the water-soluble fiber to obtain high-quality and low-defect fabric;

[0012] S2. Select functional fiber as core yarn and high-density polyethylene fiber filament as winding filament to prepare three-layer composite core-spun linen yarn, and then weave it into high-quality and low-defect fabric.

[0013] Preferably, the water-soluble fiber used in step S1 is any one of alkali-soluble polyester filaments or PVA filaments.

[0014] Preferably, the elastic polyester FDY filament in step S1 is any one of T400, T8, PTT, and PBT, and the F number is 12-48F.

[0015] Preferably, the functional fiber in step S2 is nylon-based graphene fiber, and the F number is 12-48F.

[0016] The present invention provides a three-layer composite core-spun linen yarn and application thereof, which has the following advantages compared with the prior art:

[0017] (1) The present invention wraps the water-soluble fine denier filaments around the core-spun linen yarn prepared from the linen yarn, and wraps the exposed hairiness of the original core-spun linen yarn inside the yarn body, greatly reducing the problem of fabric adhesion and weaving defects caused by the exposed hairiness. After the grey cloth is woven, the two water-soluble silks wrapped outside are removed cleanly under appropriate conditions (such as alkaline aqueous solution and heat treatment with appropriate auxiliaries) before the subsequent dyeing and finishing treatment. The processed cloth surface can retain the natural style of the linen fabric formed by the high linen content, and reduce the appearance of defects, which is conducive to improving the quality and grade of the fabric;

[0018] (2) The present invention uses nylon-based graphene fiber as the core yarn, which has a relatively high heat transfer coefficient among fiber materials and a relatively strong cool feeling. The far-infrared health care function and antibacterial function of the graphene fiber have a better health care effect on the skin. Therefore, as the core yarn, it helps the hemp fiber to transfer moisture and heat and enhance the antibacterial health care ability. On this basis, nylon-based graphene fiber is used as the core yarn, and hemp fiber is used to make core-spun hemp yarn, which is then wrapped with two high-density polyethylene yarns on the outside, which greatly reduces the itching feeling of the exposed hair of the hemp fiber when it contacts the skin, and also further increases the contact coolness of the hemp fabric, retains the high moisture absorption, antibacterial and dry characteristics of the hemp fiber, and finally improves the quality of the textile fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the three-layer composite core-spun linen yarn of the present invention;

[0020] Figure 2 A detailed schematic diagram of the core-spun linen yarn prepared in Experimental Group 3 in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of defects in the grey cloth prepared in Experimental Group 3 in an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the grey cloth prepared in Experimental Group 1 in the embodiment of the present invention;

[0023] In the figure: 1, core-spun linen yarn; 11, core yarn; 12, sheath yarn layer; 2, winding filament. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention is clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Embodiment 1:

[0026] Preparation of three-layer composite core-spun linen yarn:

[0027] Preparation Figure 1The three-layer composite core-spun linen yarn of the structure shown, wherein the core yarn 11 of the core-spun linen yarn 1 is T400 filament fiber with a fineness of 55D and an F number of 35F; the sheath yarn layer 12 wrapped around the core filament 11 is made of hemp fiber, and the hemp fiber and T400 filament fiber are core-spun on a spinning machine to prepare a core-spun linen yarn 1 with a yarn count of 20S; two 35D PVA filaments are selected as the winding filaments 2, which are staggered and wound around the outside of the core-spun linen yarn 1 at an angle of 30-60° to prepare a three-layer composite core-spun linen yarn A.

[0028] Embodiment 2:

[0029] Preparation of three-layer composite core-spun linen yarn:

[0030] Preparation Figure 1 The three-layer composite core-spun linen yarn of the structure shown, wherein the core yarn 11 of the core-spun linen yarn 1 is 1 / 1000 nylon 6-based graphene fiber, the fineness is 50D, and the F number is 36F; the sheath yarn layer 12 wrapped around the core yarn 11 is made of hemp fiber, and the hemp fiber and 1 / 1000 nylon 6-based graphene fiber are core-spun on a spinning machine to prepare a core-spun linen yarn 1 with a yarn count of 21S; two 75D / 24F HDPE (high-density polyethylene) filaments are selected as the winding filaments 2, and are staggered and wound at an angle of 30-60° on the outside of the core-spun linen yarn 1 to prepare a three-layer composite core-spun linen yarn B.

[0031] Embodiment 3:

[0032] Grey fabric weaving:

[0033] 24-needle RS full-width weft insertion warp knitting machine, 230-inch opening (194.4cm x 3 width = 11 warps x 501 threads); the width of the grey fabric on the machine is 194.4cm, the width of the finished product is 186cm including the needle edge, and the theoretical yield of dyeing and finishing is 88.5%;

[0034] GB1: 10 / 10PA6 Hengshen FDY 45D / 12F half-gloss full penetration 4.36x

[0035] Warp let-off 1350mm / rack=4.36

[0036] GB2: 01 / 01PA6 Hengshen FDY 45D / 12F half-gloss full penetration 4.36x

[0037] Warp let-off 1350mm / rack = 4.36x

[0038] Weft yarn: linen yarn

[0039] Weft density on the machine: 15.5 yarns / cm;

[0040] Experimental groups 1-3 were set up according to the above grey fabric weaving method, wherein the weft yarns used in the experimental groups 1-3 are shown in Table 1 below:

[0041] Table 1

[0042] Group Experimental Group 1 Experimental Group 2 Experimental Group 3 Weft Three-layer composite core-spun linen yarn A Three-layer composite core-spun linen yarn B Core spun yarn

[0043] The core-spun hemp yarn is: the core yarn is T400 filament fiber, the fineness is 55D, and the F number is 35F; the sheath yarn layer wrapped around the core yarn is made of hemp fiber, and the hemp fiber and the T400 filament fiber are core-spun on a spinning frame to prepare a core-spun hemp yarn with a yarn count of 20S (such as Figure 2 As shown, there is more hairiness, and the two yarns will stick together during weaving).

[0044] The grey fabrics prepared in the experimental groups 1-3 were stirred and washed in warm water at 50-60°C for 3 hours, then rinsed repeatedly with clean water and dried. After that, the grey fabrics prepared in the experimental group 3 were observed to have certain defects (such as Figure 3 ), the grey cloth of experimental group 1 is basically flawless and has high overall flatness (such as Figure 4 ).

[0045] The grey fabric prepared in Experimental Group 3 is soft to the touch and has a high cool feeling, and can be used as a summer mat or bed sheet, or clothing fabric.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A three-layer composite core-spun linen yarn, characterized in that: The three-layer composite core-spun linen yarn comprises a core-spun linen yarn (1) and two winding filaments (2) interlaced and twisted outside the core-spun linen yarn (1); The core-spun linen yarn (1) is composed of a core yarn (11) and a sheath yarn layer (12), wherein the core yarn (11) is wrapped with a plurality of sheath yarns to form the sheath yarn layer (12); The core yarn (11) is a fine denier filament, the sheath yarn is a linen yarn, and the winding filament (2) is a functional chemical fiber filament.

2. The three-layer composite core-spun linen yarn according to claim 1, characterized in that: The fineness of the core yarn (11) is 30-75D; the yarn count of the core-spun linen yarn (1) is 10S-40S; and the fineness of the filament (2) is 15-80D.

3. The three-layer composite core-spun linen yarn according to claim 1, characterized in that: The angle between the two interlaced winding filaments (2) on the outside of the core-spun linen yarn (1) is 30-60°.

4. The three-layer composite core-spun linen yarn according to claim 1, characterized in that: The linen yarn is any one of pure flax fiber or pure hemp fiber and fibers mixed with short fibers, and the linen yarn contains more than 50% of hemp.

5. A three-layer composite core-spun linen yarn as claimed in any one of claims 1 to 4 is used for weaving and preparing high-quality and low-defect fabrics, characterized in that: The application method is any one of the following steps: S1, selecting elastic polyester FDY filament as core yarn (11) and water-soluble fiber as winding filament (2) to prepare three-layer composite core-spun linen yarn, then weaving it into fabric, and then washing the water-soluble fiber with alkaline solution or water to obtain high-quality and low-defect fabric; S2, selecting functional fiber as core yarn (11), selecting high-density polyethylene fiber filament as winding filament (2) to prepare three-layer composite core-spun linen yarn, and then weaving it into a fabric with high quality and low defects.

6. The use according to claim 5, characterized in that: The water-soluble fiber used in step S1 is either alkali-soluble polyester filament or PVA filament.

7. The use according to claim 5, characterized in that: In the step S1, the elastic polyester FDY filament is any one of T400, T8, PTT, and PBT, and the F number is 12-48F.

8. The use according to claim 5, characterized in that: In the step S2, the functional fiber is a nylon-based graphene fiber, and the F number is 12-48F.

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