Powerful vortex spinning covering yarn

Abstract

The utility model discloses a strong vortex spinning covering yarn which comprises a core yarn, a wrapping yarn layer and a first wrapping fiber layer which are arranged in sequence. The core yarn comprises flame-retardant polyester filament yarn and PTFE split film filament yarn which are doubled and twisted; the wrapping wire layer is made of aramid 1313 fibers; the first coating fiber layer is made of graphene flame-retardant polyamide fibers. According to the strong vortex spinning core-spun yarn, the flame-retardant polyester filaments and the PTFE split film filaments are adopted in the core yarn, so that the strong vortex spinning core-spun yarn has good strength and thermal stability and is not prone to deformation when heated, and therefore the size of a prepared flame-retardant fabric is not prone to change. And the aramid fiber 1313 fiber and the graphene flame-retardant polyamide fiber can provide a good flame-retardant effect.

Description

Technical Field

[0001] The utility model relates to a strong vortex-spun core-spun yarn, belonging to the technical field of vortex-spun yarns. Background Art

[0002] Core yarn is also called composite yarn or covered yarn. It is a kind of yarn composed of two or more fibers, including core yarn and fibers coated on the outside of the core yarn, which can take into account the characteristics of multiple fibers. The main preparation processes include ring spinning, electrostatic spinning, vortex spinning, self-twist spinning, etc. Vortex spinning is a textile process with simple process and high production efficiency. The spinning principle is that the cotton strips that have been drawn are supplied to the drafting device, and the fiber bundles after being drafted by the roller drafting device are output from the front roller jaws, and enter the spinning nozzle along the spiral fiber guide channel under the action of the axial airflow at the inlet of the spinning nozzle. A needle-shaped twist block is provided at the outlet of the spiral fiber guide channel, and the fiber bundle is bent at the needle part, so that the fiber bundle is kept in a state without twist and introduced into the vortex chamber. The front end of the fiber bundle is pulled into the yarn channel in the spindle by the drag of the formed yarn, and twisted into the newly formed yarn to become the yarn core. The tail end of the fiber remains in the fiber guide channel when it is held by the front roller jaws. When the tail end of the fiber is no longer held by the front roller jaws, it is centrifugally acted upon by the air vortex in the spinning nozzle and no longer remains in the fiber guide channel. Instead, it is radially dispersed by the rotating airflow at the spindle entrance and falls on the front cone of the spindle under the drive of the air vortex. At the same time, it rotates with the air vortex, entangles with the subsequent yarn, and is output through the yarn channel inside the spindle. The resulting yarn consists of a yarn core composed of approximately parallel untwisted fibers and spirally wrapped fibers on the periphery.

[0003] However, the core yarn of the existing vortex spun core-spun yarn is usually made of polyester or nylon. If the vortex spun core-spun yarn with flame retardant effect is produced, the core yarn and the covering fiber layer with flame retardant effect are used. If polyester or nylon with flame retardant effect is used, it will deform when heated, causing the prepared flame retardant fabric to deform. How to prepare a vortex spun core-spun yarn with high strength and not easy to deform when heated has become a problem to be solved. Utility Model Content

[0004] The utility model aims to provide a strong vortex-spun core-spun yarn. The core yarn adopts PTFE split film filaments with thermal stability, so that the vortex-spun core-spun yarn is not easy to deform when heated.

[0005] In order to solve the above technical problems, the purpose of the utility model is achieved as follows:

[0006] The utility model relates to a strong vortex spun core-spun yarn, which comprises a core yarn, a wrapping silk layer and a first covering fiber layer which are arranged in sequence;

[0007] The core yarn includes flame-retardant polyester filaments and PTFE split film filaments twisted together; the wrapping filament layer is aramid 1313 fiber; and the first coating fiber layer is graphene flame-retardant nylon fiber.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: a second covering fiber layer is arranged between the first covering fiber layer and the wrapping silk layer; the second covering fiber layer is flame-retardant gas gel fiber.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the fire-resistant gas gel fiber is aramid aerogel fiber.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: the core yarn also includes ultra-high molecular weight polyethylene filaments twisted with the flame-retardant polyester filaments.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme: a wrapping yarn layer is spirally wound around the outer side of the first covering fiber layer 3, and the wrapping yarn layer is polyacrylonitrile pre-oxidized silk yarn.

[0012] The beneficial effects of the utility model are as follows: the strong vortex spun core-spun yarn involved in the utility model adopts flame-retardant polyester filaments and PTFE split film filaments in the core yarn, which has good strength and thermal stability, making it difficult to deform when heated, so that the prepared flame-retardant fabric is not easy to change in size. And the aramid 1313 fiber and graphene flame-retardant nylon fiber used can provide good flame-retardant effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 1 is a schematic diagram of the structure of the strong vortex spun core-spun yarn involved in Example 1;

[0014] Figure 2 is a schematic structural diagram of a strong vortex spun core-spun yarn involved in Example 2;

[0015] Figure 3 It is a schematic diagram of the structure of the strong vortex spun core-spun yarn involved in the third embodiment.

[0016] The markings in the figure are as follows: 1-core yarn; 2-wrapping silk layer; 3-first covering fiber layer; 4-second covering fiber layer; 5-covering yarn layer. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] Embodiment 1

[0019] Combination Figure 1The embodiment is described in detail. A strong vortex spun core-spun yarn according to the embodiment comprises a core yarn 1, a wrapping silk layer 2 and a first covering fiber layer 3 arranged in sequence.

[0020] The core yarn 1 includes flame-retardant polyester filaments and PTFE split film filaments twisted together; the PTFE split film filaments are made of PTFE material and have good thermal stability and are not easily deformed when heated, so that the vortex spun core yarn has good thermal stability.

[0021] The wrapping silk layer 2 is aramid 1313 fiber; the first coating fiber layer 3 is graphene flame retardant nylon fiber. Aramid 1313 fiber is a filament, which can provide good flame retardant effect for the vortex spun core-spun yarn. And the graphene flame retardant nylon fiber used can also provide good flame retardancy for the vortex spun core-spun yarn.

[0022] Embodiment 2

[0023] Combination Figure 2 The embodiment is described in detail. The strong vortex spun core-spun yarn of the embodiment is different from the embodiment 1 in that a second covering fiber layer 4 is provided between the first covering fiber layer 3 and the wrapping silk layer 2; the second covering fiber layer 4 is flame-retardant gas gel fiber.

[0024] Furthermore, the flame-retardant gas gel fiber is aramid aerogel fiber. The aramid aerogel fiber used has good heat insulation and flame retardant effects, and can have high porosity and strong capillary action.

[0025] Furthermore, the difference from the first embodiment is that the core yarn 1 also includes ultra-high molecular weight polyethylene filaments twisted with the flame-retardant polyester filaments. The ultra-high molecular weight polyethylene filaments have high strength, which can make them have good cut-proof effect and prevent the prepared fabric from being cut by sharp objects.

[0026] Embodiment 3

[0027] Combination Figure 3 , this embodiment is described in detail. The strong vortex spun core-spun yarn involved in this embodiment is different from that in the second embodiment in that: the outer side of the first covering fiber layer 3 is spirally wound with a wrapping yarn layer 5, and the wrapping yarn layer 5 is a polyacrylonitrile pre-oxidized silk yarn. The polyacrylonitrile pre-oxidized silk fiber used in the polyacrylonitrile pre-oxidized silk yarn has a high limiting oxygen index and has a good flame retardant effect.

[0028] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A strong vortex spun core-spun yarn, characterized in that: It comprises a core yarn (1), a wrapping silk layer (2) and a first covering fiber layer (3) which are arranged in sequence; The core yarn (1) comprises flame-retardant polyester filaments and PTFE split film filaments twisted together; the wrapping filament layer (2) is aramid 1313 fiber; and the first covering fiber layer (3) is graphene flame-retardant nylon fiber.

2. A strong vortex spun core-spun yarn according to claim 1, characterized in that: A second covering fiber layer (4) is arranged between the first covering fiber layer (3) and the wrapping silk layer (2); the second covering fiber layer (4) is flame-retardant gas gel fiber.

3. A strong vortex spun core-spun yarn according to claim 2, characterized in that: The fire-resistant gas gel fiber is aramid aerogel fiber.

4. A strong vortex spun core-spun yarn according to claim 1, characterized in that: The core yarn (1) also includes ultra-high molecular weight polyethylene filaments twisted with flame-retardant polyester filaments.

5. A strong vortex spun core-spun yarn according to any one of claims 1 to 4, characterized in that: A wrapping yarn layer (5) is spirally wound around the outer side of the first coating fiber layer (3), and the wrapping yarn layer (5) is polyacrylonitrile pre-oxidized silk yarn.

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