Low-elastic vortex composite spinning yarn

Abstract

The invention discloses a low-elasticity vortex composite yarn, the low-elasticity vortex composite yarn comprises a core yarn and an outer coating layer, the core yarn is formed by 2-3 pre-oriented PBT low-elasticity filaments which are prepared in advance through low-twist composite winding according to process requirements, and the outer coating layer is composed of various untwisted short fibers. The multiple types of untwisted short fibers are subjected to cotton grabbing, cotton blending, scutching, cotton carding and drawing to obtain corresponding types of drawn slivers; finally, the core yarn is fed into a vortex tube through a core yarn guide hole in the center of the pull-up body from a nozzle inlet of a vortex spinning machine, meanwhile, drawn slivers of corresponding types are fed into a nozzle in proportion according to process requirements, and the drawn slivers are injected into the vortex tube at a high speed through compressed air along a spraying hole; and the short fibers are driven by high-speed rotating airflow in the vortex tube to rotate and wrap the core yarn to be spun into the yarn. By means of the mode, the size stability of the yarn can be obviously improved under the condition that the weavability of the vortex composite spinning yarn is not reduced, and therefore the requirement for the contour definition of a woven pattern is met.

Description

Technical Field

[0001] The invention relates to the field of textile technology, in particular to a low-elastic vortex multi-spun yarn. Background Art

[0002] Vortex spinning uses high-speed compressed gas to rotate at high speed in a vortex tube, driving the fed short fibers to disperse and surround the core wire according to the direction of the airflow. Traditional vortex spinning yarns are fluffy in appearance, resistant to washing, and easy to color, but the yarn itself generally has poor strength and ductility, so the weavability is relatively poor. In order to improve the weavability, the current common method is to use polyester high-elastic yarn as the core wire. The use of polyester high-elastic yarn can effectively make up for the defects in strength and ductility, but the elasticity problem will cause the yarn to have poor dimensional stability during weaving. In this way, when using this type of yarn to weave specific patterns, the pattern boundary contour is not clear, which is difficult to meet the requirements of some specific customers. Summary of the invention

[0003] The main technical problem solved by the present invention is to provide a low-elastic vortex multi-spun yarn, which can improve the contour clarity of the weaving pattern without reducing the weaving performance.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a low-elastic vortex multi-spun yarn, the low-elastic vortex multi-spun yarn comprises: a core wire and an outer covering layer, the core wire is made by winding 2 to 3 PBT low-elastic filaments, and the outer covering layer is mixed by a variety of untwisted short fibers.

[0005] In a preferred embodiment of the present invention, the specification of the PBT low-elastic filament is 50-80D, and it is composed of 12-36 monofilaments.

[0006] In a preferred embodiment of the present invention, the twist number of the PBT low-elastic yarn is 1-3.

[0007] In a preferred embodiment of the present invention, the plurality of parallel untwisted staple fibers include a mixture of one or more of modal fibers, viscose fibers, cashmere fibers or nylon fibers.

[0008] Provided is a production process for low-elastic vortex multiple spinning yarn, the production process for low-elastic vortex multiple spinning yarn comprising the following steps:

[0009] The first step is to prepare pre-oriented PBT low-elastic filaments in advance, and to wind a corresponding number of PBT low-elastic filaments into core wires by low twist according to the process requirements;

[0010] The second step is to process the untwisted short fiber raw materials according to the process requirements, and obtain the corresponding types of sliver through cotton picking, cotton blending, cotton cleaning, cotton combing and cotton drawing;

[0011] In the third step, the core yarn produced in the first step is fed into the vortex tube through the core yarn guide hole in the center of the guide body at the nozzle entrance of the vortex spinning machine. At the same time, the corresponding types of cooked yarns are fed into the nozzle in proportion according to the process requirements, and are injected into the vortex tube at high speed along the spray hole through compressed air. The high-speed rotating airflow in the vortex tube drives the short fibers to rotate and wrap around the core yarn to be spun into yarn.

[0012] The twist number of the rewinding in the first step is greater than the twist number of the PBT low-elastic filament and is opposite to the winding direction of the single filament in the PBT filament.

[0013] The beneficial effect of the present invention is that the present invention adopts our company's unique PBT low-elastic yarn to replace the high-elastic polyester core wire used in the existing vortex spinning, thereby further improving the dimensional stability in the weaving process while ensuring the good weavability of the original vortex spinning yarn, thereby improving the contour clarity of the weaving pattern and meeting customer requirements. DETAILED DESCRIPTION

[0014] The preferred embodiments of the present invention are described in detail below so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0015] The embodiments of the present invention include:

[0016] Example 1

[0017] A low-elastic vortex multi-spun yarn, the low-elastic vortex multi-spun yarn comprises: a core wire and an outer covering layer, the core wire is made by winding three PBT low-elastic filaments, and the outer covering layer is mixed with a variety of untwisted short fibers. The specification of the PBT low-elastic filament is 50D / 12F, and the twist number is 2. The multiple parallel untwisted short fibers are mixed with viscose fibers and nylon fibers in a mass ratio of 72:28.

[0018] The production process of the low-elastic vortex multi-spinning yarn comprises the following steps:

[0019] The first step is to prepare pre-oriented PBT low-elastic filaments in advance, and to wind a corresponding number of PBT low-elastic filaments into a core wire according to the process requirements, wherein the number of twists is 5 and the winding direction is opposite to that of the single filaments constituting the PBT low-elastic filaments;

[0020] The second step is to process the untwisted viscose fiber and nylon fiber according to the process requirements, and obtain the viscose fiber sliver and nylon fiber sliver through cotton grabbing, cotton blending, cotton cleaning, cotton carding and cotton drawing;

[0021] In the third step, the core thread produced in the first step is fed into the vortex tube through the core thread guide hole in the center of the guide body at the nozzle entrance of the vortex spinning machine. At the same time, the corresponding viscose sliver and nylon fiber sliver are fed into the nozzle in proportion according to the process requirements, and are injected into the vortex tube at high speed along the spray hole through compressed air. The high-speed rotating airflow in the vortex tube drives the short fibers to rotate and wrap around the core thread to be spun into yarn.

[0022] Through the above method, the yarn finally obtained in this embodiment has a fluffy and smooth feel, a soft luster, excellent thermal insulation performance and good skin-friendly performance, and the overall performance is close to rabbit hair. Moreover, since the core thread adopts PBT low-elastic yarn, compared with the common vortex spinning yarn, it has better dimensional stability, the woven pattern has a clear outline, and the overall strength is relatively high, the weavability is strong, and it can adapt to a variety of textile processing techniques.

[0023] Example 2

[0024] A low-elastic vortex multi-spun yarn, the low-elastic vortex multi-spun yarn comprising: a core wire and an outer covering layer, the core wire is made by winding two PBT low-elastic filaments, and the outer covering layer is mixed with a plurality of untwisted short fibers. The specification of the PBT low-elastic filament is 80D / 28F, and the twist number is 1.5. The plurality of parallel untwisted short fibers are mixed with modal fiber, viscose fiber and cashmere fiber in a mass ratio of 10:30:7.

[0025] The production process of the low-elastic vortex multi-spinning yarn comprises the following steps:

[0026] The first step is to prepare pre-oriented PBT low-elastic filaments in advance, and to coil two PBT low-elastic filaments into a core wire according to the process requirements, wherein the number of twists is 3 and the winding direction is opposite to the winding direction of the single filaments constituting the PBT low-elastic filaments;

[0027] The second step is to process the untwisted short fiber raw materials according to the process requirements, and obtain the corresponding types of sliver through cotton picking, cotton blending, cotton cleaning, cotton combing and cotton drawing;

[0028] In the third step, the core yarn produced in the first step is fed into the vortex tube through the core yarn guide hole in the center of the guide body at the nozzle entrance of the vortex spinning machine. At the same time, the corresponding types of cooked yarns are fed into the nozzle in proportion according to the process requirements, and are injected into the vortex tube at high speed along the spray hole through compressed air. The high-speed rotating airflow in the vortex tube drives the short fibers to rotate and wrap around the core yarn to be spun into yarn.

[0029] Through the above method, the yarn surface finally obtained in this embodiment has the advantages of modal fiber, viscose fiber and cashmere fiber, and has good skin-friendly warmth retention and moisturizing ability. Moreover, since the core thread adopts PBT low-elastic yarn, the overall dimensional stability is better than that of common vortex spinning yarn, the woven pattern has a clear outline, and the overall strength is relatively high, the weavability is strong, and it can adapt to a variety of textile processing techniques.

[0030] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A low-elastic vortex multi-spun yarn, characterized in that: The low-elastic vortex multi-spun yarn comprises: a core wire and an outer covering layer, wherein the core wire is made by winding 2 to 3 PBT low-elastic filaments, and the outer covering layer is made by mixing a variety of untwisted short fibers.

2. The low-elastic vortex multiple spinning yarn according to claim 1, characterized in that: The specification of the PBT low-elastic filament is 50-80D, and it is composed of 12-36 monofilaments.

3. The low-elastic vortex multiple spinning yarn according to claim 1, characterized in that: The twist number of the PBT low-elastic yarn is 1-3.

4. The low-elastic vortex multi-spun yarn according to claim 1, characterized in that: The plurality of parallel untwisted staple fibers include a mixture of one or more of modal fibers, viscose fibers, cashmere fibers or nylon fibers.

5. A production process for the low-elastic vortex multiple spinning yarn according to any one of claims 1 to 4, characterized in that: The production process comprises the following steps: The first step is to prepare pre-oriented PBT low-elastic filaments in advance, and to wind a corresponding number of PBT low-elastic filaments into core wires by low twist according to the process requirements; The second step is to process the untwisted short fiber raw materials according to the process requirements, and obtain the corresponding types of sliver through cotton picking, cotton blending, cotton cleaning, cotton combing and cotton drawing; In the third step, the core yarn produced in the first step is fed into the vortex tube through the core yarn guide hole in the center of the guide body at the nozzle entrance of the vortex spinning machine. At the same time, the corresponding types of cooked yarns are fed into the nozzle in proportion according to the process requirements, and are injected into the vortex tube at high speed along the spray hole through compressed air. The high-speed rotating airflow in the vortex tube drives the short fibers to rotate and wrap around the core yarn to be spun into yarn.

6. The production process of low-elastic vortex multiple spinning yarn according to claim 5, characterized in that: The twist number of the rewinding in the first step is greater than the twist number of the PBT low-elastic filament and is opposite to the winding direction of the single filament in the PBT filament.