Vortex spun polyester yarn

Abstract

The utility model discloses a vortex spinning polyester yarn belongs to vortex yarn technical field, including yarn body, yarn body includes core yarn and ring yarn, and ring yarn is wound on core yarn, and along the axis direction of ring yarn from the self -winding of several distribution of the loop of core yarn periphery, the outer surface of yarn body is intermittently wound several short fibers along the axis direction of yarn body, to along the axis direction of yarn body alternately forms the restraint area of winding short fiber and the elastic area of not winding short fiber. The utility model discloses a vortex spinning polyester yarn, and the setting of restraint area makes the twist of polyester yarn part position higher, improves the overall structural strength of polyester yarn, guarantees still to have the loop of restraint area position, and the ring yarn of spandex fiber can effectively improve the structure elasticity of loop replacement terry, simultaneously, spandex fiber also easily forms the loop of self -winding in vortex field.

Description

Technical Field

[0001] This utility model relates to the field of vortex yarn technology, specifically to vortex-spun polyester yarn. Background Technology

[0002] Terry fabrics are typically knitted fabrics with looped loops on one or both sides, and these fabrics are mostly woven from terry fancy yarns.

[0003] Existing terry yarns typically consist of a core yarn and a loop yarn. The loop yarn is wound by a twisting machine and then introduced into a twisting machine with the core yarn to form terry yarns. The yarn has a complete loop shape.

[0004] However, when terry yarns are twisted in this way, as the twist of the core yarn and the loop yarn increases, the surface area of ​​the loops bending and adhering to the core yarn also increases. As the strength of the yarn increases, the overall softness of the loops on the yarn surface weakens, and the softness of the fabric supporting it decreases. Utility Model Content

[0005] The purpose of this invention is to solve the problems in the prior art by proposing vortex-spun polyester yarn.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: vortex-spun polyester yarn, comprising a yarn body, the yarn body comprising a core yarn and loop yarn, the loop yarn being wound around the core yarn and self-wound along the axial direction of the loop yarn to form several loops distributed around the core yarn, the outer surface of the yarn body being intermittently wound with several short fibers along the axial direction of the yarn body, so as to alternately form a binding area with wound short fibers and an elastic area without wound short fibers along the axial direction of the yarn body.

[0007] The present invention is further configured such that the length of the binding zone along the yarn axis is less than or equal to the length of the elastic zone in the same direction.

[0008] The present invention is further configured such that: the loop yarn, the core yarn, and several short fibers are spun together by feeding them into the vortex field of the vortex spinning process; the feeding speed of the loop yarn is greater than the yarn drawing speed of the vortex spinning process; and the speed direction of the loop yarn and the short fibers fed into the core yarn is opposite to the speed direction of the core yarn in the same plane when it is guided by the airflow in the vortex field to rotate.

[0009] The present invention is further configured such that the core yarn is thicker than the loop yarn, and the core yarn is 25-50 tex.

[0010] The present invention is further configured such that: the short fiber is polyester short fiber, the core yarn is made of multiple polyester long fibers with a twist of less than 100, and the twist between the core yarn and the short fiber is 650-300.

[0011] The present invention is further configured such that the loop yarn is made of multiple spandex fibers with a twist of not less than 100.

[0012] In summary, the present invention has the following beneficial effects: the setting of the binding zone makes the twist of the polyester yarn in some positions higher, which improves the overall structural strength of the polyester yarn while ensuring that there are still loops in the binding zone. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 This mainly reflects the production principle of this utility model.

[0014] In the diagram: 1. Core yarn; 2. Loop yarn; 21. Loop; 3. Staple fiber; 4. Binding zone; 5. Elastic zone. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Vortex-spun polyester yarn, such as Figure 1 As shown, the yarn body includes a core yarn 1 and a loop yarn 2. The loop yarn 2 is wound around the core yarn 1 and self-wound along the axial direction of the loop yarn 2 to form several loops 21 distributed around the core yarn 1. Several short fibers 3 are intermittently wound around the outer surface of the yarn body along the axial direction of the yarn body to alternately form a binding area 4 with the short fibers 3 wound around and an elastic area 5 without the short fibers 3 wound around. The several loops 21 around the core yarn 1 are equivalent to the loop structure on the loop yarn. The elastic area 5 ensures the softness of the loops on the surface of the fabric woven by the loop yarn 2 and the core yarn 1 at a small twist. In addition, since the binding area 4 is formed by short fibers 3, the position where the short fibers 3 are wound is mainly the part of the core yarn 1 and the loop yarn 2 that has not formed loops 21, so that the loops 21 covered by the binding area 4 can partially pass through between the short fibers 3. The setting of the binding area 4 makes the twist of some parts of the polyester yarn higher, which improves the overall structural strength of the polyester yarn while ensuring that there are still loops 21 at the binding area 4. In order to make the fabric woven from the polyester yarn in this embodiment have high softness, the length of the binding area 4 along the yarn axis is less than or equal to the length of the elastic area 5 in the same direction, that is, the proportion of the elastic area 5 on the yarn body needs to be guaranteed.

[0017] like Figure 2 As shown, in the weaving of this embodiment, the loop yarn 2, core yarn 1, and several short fibers 3 are spun together by being fed into the vortex field of the vortex spinning process. The feeding speed of the loop yarn 2 is greater than the yarn drawing speed of the vortex spinning process. The speed direction of the loop yarn 2 and the short fibers 3 fed into the core yarn 1 is opposite to the speed direction of the core yarn 1 in the same plane when it is guided by the airflow in the vortex field to rotate. See details below. Figure 2 In the vortex tube used in vortex spinning, the core yarn 1 is introduced into the vortex tube from bottom to top. Under the influence of negative pressure airflow, the core yarn 1 rotates. The yarn feeding rate of the core yarn 1 is fixed. Then, loop yarn 2 and several short fibers 3 are introduced into the vortex tube in sequence. The feeding of short fibers 3 is spaced. The core yarn 1 and loop yarn 2 before the vortex tube, as well as the finished polyester yarn drawn out from the vortex tube, are all controlled by the tensioning action of the tensioning roller to control the tension. To make it easier for the loop yarn 2 to wind onto the core yarn 1, the core yarn 1 can be made of 25-50 tex. At the same time, the core yarn 1 is thicker than the loop yarn 2. The short fiber 3 is made of polyester fiber. The core yarn 1 is made of multiple polyester long fibers with a twist of less than 100, that is, the core yarn 1 can be loosened under the influence of the airflow in the vortex field, so that the short fiber 3 can be twisted on later. In order to ensure that the loop yarn 2 is not easy to loosen in the vortex field, the loop yarn 2 is made of multiple spandex fibers with a twist of not less than 100. The spandex fiber loop yarn 2 can effectively improve the structural elasticity of replacing the loop with loop 21. At the same time, the spandex fiber is also easy to self-wrap to form loop 21 in the vortex field. In order to ensure the structural strength of the binding area 4, the twist between the core yarn 1 and the short fiber 3 is 650-300, that is, the value of this twist is negatively correlated with the diameter of the core yarn 1.

[0018] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0019] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vortex spun polyester yarn comprising a yarn body, the yarn body comprising a core yarn (1) and a loop yarn (2), characterised in that: The loop yarn (2) is wound around the core yarn (1) and self-wound along the axial direction of the loop yarn (2) to form several loops (21) distributed around the core yarn (1). The outer surface of the yarn is intermittently wound with several short fibers (3) along the axial direction of the yarn to alternately form a binding area (4) of the wound short fibers (3) and an elastic area (5) of the unwound short fibers (3) along the axial direction of the yarn.

2. The vortex spun polyester yarn according to claim 1, wherein: The length of the binding zone (4) along the yarn axis is less than or equal to the length of the elastic zone (5) in the same direction.

3. The vortex-spun polyester yarn according to any one of claims 1 to 2, characterized in that: The loop yarn (2), core yarn (1) and several short fibers (3) are spun together by feeding them into the vortex field of the vortex spinning. The feeding speed of the loop yarn (2) is greater than the yarn drawing speed of the vortex spinning. The speed direction of the loop yarn (2) and the short fibers (3) when feeding into the core yarn (1) is opposite to the speed direction in the same plane when the core yarn (1) is guided by the airflow in the vortex field to rotate.

4. The vortex spun polyester yarn according to claim 3, wherein: The core yarn (1) is thicker than the loop yarn (2), and the core yarn (1) is 25-50 tex.

5. The vortex spun polyester yarn of claim 4, wherein: The short fiber (3) is polyester short fiber (3), and the core yarn (1) is made of multiple polyester long fibers with a twist of less than 100. The twist between the core yarn (1) and the short fiber (3) is 650-300.

6. The vortex spun polyester yarn of claim 4, wherein: The loop yarn (2) is made of multiple spandex fibers with a twist of not less than 100.

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