A kind of elastic flame-retardant vortex-spun composite yarn

Abstract

The utility model discloses an elastic flame-retardant vortex-spun composite yarn, comprising a core yarn, a first coating layer and a first wrapping layer; the core yarn is a Sorona fiber yarn, the first coating layer is vortex-spun from polyacrylonitrile preoxidized silk fibers; the first wrapping layer is an antibacterial flame-retardant nylon fiber yarn spirally wound on the outside of the first coating layer. The elastic flame-retardant vortex-spun composite yarn involved in the utility model, the Sorona fiber yarn used can provide good elasticity, improve the comfort of the fabric prepared by the yarn, the polyacrylonitrile preoxidized silk fibers used can provide good flame-retardant effect, the yarn made of the antibacterial flame-retardant nylon fibers used not only has a flame-retardant effect, but also has an antibacterial effect, and the nylon also has good skin-fitting properties, improving the comfort of the fabric.

Description

Technical Field

[0001] The utility model relates to an elastic flame-retardant vortex-spun composite yarn, belonging to the technical field of vortex-spun yarns. Background Art

[0002] Core-spun 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 wrapped 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 that have been 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-blocking piece 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 while being 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] With the development of society, people have higher and higher requirements for clothing. They should not only meet the basic requirements of clothing for warmth and covering the body, but also be elastic to improve comfort and flame retardant to protect. How to prepare a vortex spun yarn that is elastic and flame retardant has become a problem to be solved. Utility Model Content

[0004] The utility model aims to provide an elastic flame-retardant vortex-spun composite yarn, which has elasticity to improve the comfort of the prepared fabric and also has a permanent flame-retardant effect.

[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 an elastic flame-retardant vortex-spun composite yarn, comprising a core yarn, a first covering layer and a first wrapping layer;

[0007] The core yarn is Sorona fiber yarn, the first covering layer is vortex-spun from polyacrylonitrile preoxidized silk fiber; the first wrapping layer is antibacterial and flame-retardant nylon fiber yarn spirally wound on the outside of the first covering layer.

[0008] On the basis of the above solution and as a preferred solution of the above solution: flame retardant microcapsules are adhered to the surface of the Sorona fiber yarn.

[0009] On the basis of the above solution and as a preferred solution of the above solution: a radiation protection fiber layer is arranged between the first covering layer and the core yarn.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: the radiation-proof fiber layer uses flame-retardant viscose fiber with nano-silver particles attached to the surface.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme: the first wrapping layer also includes a flame retardant antistatic yarn arranged in parallel with the antibacterial and flame retardant nylon fiber yarn.

[0012] The beneficial effects of the utility model are as follows: the elastic flame-retardant vortex-spun composite yarn involved in the utility model, the Sorona fiber yarn used can provide good elasticity, improve the comfort of the fabric prepared by the yarn, the polyacrylonitrile pre-oxidized silk fiber used can provide good flame retardant effect, the yarn made of the antibacterial flame-retardant nylon fiber used not only has flame retardant effect, but also has antibacterial effect, and nylon also has good skin-fitting property, which improves the comfort of the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the elastic flame-retardant vortex-spun composite yarn involved in Example 1;

[0014] Figure 2 It is a schematic structural diagram of the elastic flame-retardant vortex-spun composite yarn involved in the second embodiment.

[0015] The markings in the figure are as follows: 1-core yarn; 2-first covering layer; 3-first wrapping layer; 4-radiation protection fiber layer. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] Embodiment 1

[0018] Combination Figure 1 The present embodiment is described in detail. The present embodiment involves an elastic flame-retardant vortex-spun composite yarn, comprising a core yarn 1 , a first covering layer 2 and a first wrapping layer 3 .

[0019] The core yarn 1 is Sorona fiber yarn. Sorona fiber is made of two main raw materials, 1,3-propylene glycol and PTA, and has high elastic recovery rate and low elastic elongation. Its elasticity is more durable than other elastic fibers. The yarn and fabric prepared from this fiber have good elasticity.

[0020] The first coating layer 2 is formed by vortex spinning of polyacrylonitrile preoxidized silk fibers; the polyacrylonitrile preoxidized silk fibers have a high limiting oxygen index and a permanent flame retardant effect, so that the yarn has a good flame retardant effect.

[0021] The first wrapping layer 3 is an antibacterial flame-retardant nylon fiber yarn spirally wound on the outside of the first coating layer 2. The antibacterial flame-retardant nylon fiber used in the antibacterial flame-retardant nylon fiber yarn is made of antibacterial components, flame-retardant components and nylon 6 slices as raw materials. The antibacterial components are stabilized inside and on the surface of the fibers by in-situ addition technology and chemical bond anchoring; the flame-retardant components are introduced into nylon 6 by in-situ polymerization technology. The antibacterial component is a core-shell structure nano silver antibacterial material, and the flame-retardant component is a halogen-free flame retardant.

[0022] Furthermore, flame retardant microcapsules are adhered to the surface of the Sorona fiber yarn. The flame retardant microcapsules used are composed of a core and a shell covering the core, the core is a flame retardant, and the shell is a natural fiber.

[0023] Embodiment 2

[0024] Combination Figure 2 , this embodiment is described in detail. The elastic flame-retardant vortex-spun composite yarn involved in this embodiment is different from that in the first embodiment in that a radiation-proof fiber layer 4 is provided between the first coating layer 2 and the core yarn 1. The radiation-proof fiber layer 4 uses flame-retardant viscose fiber with nano-silver particles attached to the surface. Nano-silver particles can not only provide radiation protection, but also have good antibacterial effect.

[0025] Another difference from the first embodiment is that the first wrapping layer 3 further includes a flame retardant antistatic yarn arranged in parallel with the antibacterial flame retardant nylon fiber yarn.

[0026] 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. An elastic flame-retardant vortex-spun composite yarn, characterized in that: It comprises a core yarn (1), a first covering layer (2) and a first wrapping layer (3); The core yarn (1) is a Sorona fiber yarn, and the first coating layer (2) is formed by vortex spinning of polyacrylonitrile preoxidized silk fibers; the first wrapping layer (3) is an antibacterial and flame-retardant nylon fiber yarn spirally wound around the outside of the first coating layer (2).

2. The elastic flame-retardant vortex-spun composite yarn according to claim 1, characterized in that: Flame-retardant microcapsules are adhered to the surface of the Sorona fiber yarn.

3. The elastic flame-retardant vortex-spun composite yarn according to claim 1, characterized in that: A radiation protection fiber layer (4) is provided between the first covering layer (2) and the core yarn (1).

4. The elastic flame-retardant vortex-spun composite yarn according to claim 3, characterized in that: The radiation-proof fiber layer (4) uses flame-retardant viscose fibers with nano-silver particles attached to the surface.

5. The elastic flame-retardant vortex-spun composite yarn according to claim 1, characterized in that: The first wrapping layer (3) also includes a flame retardant antistatic yarn arranged in parallel with the antibacterial flame retardant nylon fiber yarn.

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