CN212741646U

CN212741646U - Multi-core covering yarn structure for increasing covering stability

Info

Publication number: CN212741646U
Application number: CN202020915454.2U
Authority: CN
Inventors: 何英杰
Original assignee: Keystone Textile Co ltd
Current assignee: Keystone Textile Co ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2021-03-19
Anticipated expiration: 2030-05-26

Abstract

The utility model belongs to the technical field of multicore covering yarn technique and specifically relates to an increase multicore covering yarn structure of covering core stability. The multi-core covering yarn comprises at least two core yarns and two covering yarns, wherein the covering yarns are wrapped outside the core yarns, at least one core yarn is made of hard filaments, at least one core yarn is made of chemical fiber filaments with the breaking elongation of less than 50% and the retraction elasticity of 10% -30%, and the hard filaments and the chemical fiber filaments are mutually wound. The utility model discloses an adopt the chemical fiber filament that accords with certain requirement to carry out the buffer protection to stereoplasm filament, solved stereoplasm filament and not had the problem of back easy fracture of contracting after the performance or tensile, also controlled the emergence probability of the naked problem of core yarn.

Description

Multi-core covering yarn structure for increasing covering stability

Technical Field

The utility model belongs to the technical field of multicore covering yarn technique and specifically relates to an increase multicore covering yarn structure of covering core stability.

Background

The core-spun yarn is a very important composite yarn, and has two components, one is core yarn and the other is short fiber of the outer package, and the core-spun yarn and the short fiber are made into yarn with obvious core yarn structure by a core-spun process, so that the characteristics of the core yarn and the outer package fiber are exerted, and the finished yarn has the yarn performance of combining the core yarn and the outer package fiber.

Hard filaments such as single or multiple glass filaments/metal filaments/basalt filaments are often used as core yarns in the prior art, for example, the utility model with the current authorization publication number of CN206127534U discloses a multi-core-spun yarn and its two-for-one twisted yarn, core-spun yarn, and gloves and fabrics woven by the same. The core-spun yarn is a patent of the applicant applied earlier, and adopts the technical means that the multi-core-spun yarn comprises a core layer and an outer cladding layer, the core layer comprises two or more core yarns, the core yarn is a hard core yarn with the breaking elongation of less than 50 percent determined by an ISO2062 method, and the core yarn adopts one or more of glass filaments, metal filaments or basalt filaments.

The technical scheme changes the traditional core-spun structure of one core yarn into the core-spun structure of a plurality of fine core yarns, wherein the core yarn adopts one or more of glass filaments, metal filaments or basalt filaments. These core yarn filaments are generally classified into two types, metallic type filaments and mineral type filaments. Metal filaments, such as steel wires, generally have no elastic recovery after drawing. Mineral filaments such as basalt filaments are brittle and easily break after drawing. These core yarns, while having elongation properties, still have poor retractive properties after elongation. The core yarn is repeatedly warped and drawn after protective articles such as gloves and sleeves are repeatedly put on and taken off, and the actual condition of the core yarn is basically that the core yarn can not be retracted to the original state. Based on this, the problem of core yarn exposure caused by the above-mentioned reasons is also urgently required to be solved.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, one of the purposes of the utility model is to provide an increase multicore covering yarn structure of covering core stability.

The above object of the present invention is achieved by the following technical solution: the utility model provides an increase multicore covering yarn structure of covering core stability, includes core yarn and package yarn, the core yarn has two at least, the package yarn parcel is outside at the core yarn, at least one adopts hard filament, and at least one adopts elongation at break to be less than 50% and the chemical fiber filament that contracts elasticity and is 10% ~ 30%, hard filament and chemical fiber filament intertwine.

By adopting the technical scheme, one of the core yarns is wound by adopting the chemical fiber filament with the extension capability and the retraction capability and the hard filament, and the chemical fiber filament can wrap the hard filament to replace the hard filament to provide the deformation capability, so that the extension performance is provided for the glove woven by the multi-core covering yarn. If the hard filaments are metal filaments, the hard filaments do not have retraction performance after being stretched, and the excessive parts after being stretched can be wound with the chemical fiber filaments, so that the arched parts on a single spiral ring are very few, and the problem that the exposed metal filaments are arched and exposed is not easy to occur. If the hard filament is basalt filament, when the fracture condition occurs under severe conditions, the core yarn is still relatively stable, and the chemical fiber filament is wound for protection, so that the condition that the direct long section of the fractured hard filament is exposed outside is avoided. In this way, the chemical fiber filaments constitute a buffer protection member when the hard filaments are arched or broken, and together with the hard filaments, the chemical fiber filaments constitute a core yarn having a buffer function.

The chemical fiber filament with the elongation-break rate of more than 50 percent has overlarge deformation range and is generally thicker than a single thread body. The chemical fiber filament with retraction elasticity less than 10 percent has poor retraction performance and can not meet the use requirement of ductility of the glove. The chemical fiber filament with the retraction elasticity of more than 30 percent has over-strong retraction performance, and easily causes the problem that the hard filament is extruded and arched.

The present invention may be further configured in a preferred embodiment as: the retraction elasticity is according to the formula

The process comprises the steps of obtaining a mixture of, in the formula,

(ii) a RLII is the retraction of the chemical fiber filament after stretching in percentage; li is the total length of the chemical fiber filament after stretching, and the unit is mm; lii is the total length of the stretched filaments in mm when they return to a fixed state after they are unwound.

By adopting the technical scheme, the retraction elasticity calculation of the chemical fiber filament is limited, and not all the fibers are suitable for being used as the buffer protection piece of the hard filament.

The present invention may be further configured in a preferred embodiment as: the covering yarn is short fiber, and a plurality of short fibers are gathered on the surface layer of the core yarn to form the multi-core covering yarn.

By adopting the technical scheme, the multi-core covering yarn and the textile thereof are soft and have good hand feeling.

The present invention may be further configured in a preferred embodiment as: the short fiber comprises one or more of polyethylene short fiber, aramid short fiber, terylene, chinlon, viscose, tencel, modal, polypropylene fiber, cotton and acrylic fiber.

By adopting the technical scheme, the short fibers can be made of the same material or different materials, and the comprehensive performance of the textile can be improved when different materials are used.

The materials can be multi-core-spun yarns, and the performance of the multi-core-spun yarns is further enhanced after the core yarns have the cutting resistance and the buffering protection capability. The polyethylene staple fibers can improve the strength, cut resistance and abrasion resistance of the textile. The aramid staple fiber can increase strength, cut resistance and flame retardant properties. The terylene and the chinlon can improve the strength and the comfort. The textile prepared from the viscose staple fibers has the advantages of smoothness, coolness, air permeability, static resistance, ultraviolet resistance, gorgeous color and good dyeing fastness. The use of tencel helps the finished textile feel smooth. The textile made of the modal has good moisture absorption, sweat releasing and air permeability. The textile made of the polypropylene short fiber has the advantages of being not only light-resistant and anti-cutting, but also obvious in moisture absorption effect and soft in hand feeling.

The present invention may be further configured in a preferred embodiment as: the length of the short fiber is 20mm-75 mm.

By adopting the technical scheme, the connection gap is small if the short fiber is too long, and further the air gap is small, the air degree is not high, and further the flexibility is not high. If the short fibers are too short, the wrapping process cannot be finished by lap joint. The short fibers in the range are suitable for being mutually dragged and lapped, and the requirements of process manufacturing and product flexibility can be met.

The present invention may be further configured in a preferred embodiment as: the thickness of the short fiber is 0.8D-3.5D.

By adopting the technical scheme, the thickness is proper, and the core-spun yarn woven by the selected staple fibers has softness and strength.

The present invention may be further configured in a preferred embodiment as: the chemical fiber filament is at least one of polyester filament, polyethylene filament and aramid 1414 filament.

By adopting the technical scheme, the polyester filament yarns, the polyethylene filament yarns and the aramid 1414 filament yarns have good strength, wear resistance and elasticity.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the hard filament is buffered and protected by the chemical fiber filament which meets certain requirements, so that the problem that the hard filament does not have retraction performance or is easy to break after being stretched is solved, and the problem of core yarn exposure is also controlled;

2. the reasonable formula provides basis for the selection of the chemical fiber filaments, so that the suitable chemical fiber filaments can be more accurately selected.

Drawings

FIG. 1 is a schematic structural view of example 1.

Fig. 2 is a block flow diagram of embodiment 1.

FIG. 3 is a schematic structural view of embodiment 2.

FIG. 1, covering yarn; 2. hard filaments; 3. chemical fiber filament.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1:

as shown in figure 1, a multi-core-spun yarn structure for increasing the core-spun stability comprises a core yarn and a covering yarn 1, wherein the number of the core yarn is at least two, and the covering yarn 1 is covered outside the core yarn.

The covering yarn 1 is preferably short fiber, a plurality of short fibers are gathered on the surface layer of the core yarn to form the multi-core covering yarn, and the short fiber comprises one or more of polyethylene short fiber, aramid short fiber, terylene, chinlon, viscose, tencel, modal, polypropylene, cotton and acrylic fiber. The length of the short fiber is controlled to be 20mm-75mm, and the thickness of the short fiber is controlled to be 0.8D-3.5D.

At least one of the core yarns is made of hard filaments 2, at least one of the core yarns is made of chemical fiber filaments 3 with the breaking elongation of less than 50% and the retraction elasticity of 10% -30%, and the hard filaments 2 and the chemical fiber filaments 3 are mutually wound.

Wherein, the hard filament 2 can be one of metal wire, glass fiber filament and basalt filament. The hard filaments 2 are preferably drawn, vibrated, and wound, and the hard filaments 2 are subjected to pretreatment so that the amount of deformation of the woven or knitted product produced in the later stage is small.

Wherein the retractive elasticity is obtained according to the formula RLII = Δ L/Li × 100;

wherein Δ L = Li-Lii;

RLII is the retraction of the chemical fiber filament 3 after stretching in percentage;

li is the total length of the chemical fiber filament 3 after stretching, and the unit is mm;

lii is the total length of the stretched chemical fiber filament 3 in mm when it is returned to a fixed state after being loosened.

The exact value of the retractive elasticity can be obtained by the above formula, so that the preferred suitable chemical fiber filament 3 is obtained. The chemical fiber filaments 3 can be some types of polyester filaments, polyethylene filaments, aramid 1414 filaments.

As shown in fig. 2, a process for manufacturing a multi-core-spun yarn structure for increasing the core-spun stability includes the following steps:

step one, material selection: the hard filament 2 can be one of metal wire, glass fiber filament and basalt filament; the chemical fiber filament 3 is selected from fibers with the breaking elongation of less than 50% and the retraction elasticity of 10% -30%, and the value of the retraction elasticity can be obtained by calculation according to RLII = delta L/Li multiplied by 100, wherein the delta L = Li-Lii.

The calculated value of retraction elasticity was obtained as follows: taking a section of the chemical fiber filament to be selected as a sample, wherein the length of each sample is equal, and any one of the samples is designated as a rated length in the range of 100-500mm, and the length is taken as an original length L0; stretching the samples by using a stretching instrument, wherein the stretching distance of each sample is the same, and the total length of the stretched sample is Li; loosening the tension of the sample, and measuring the total length of the sample in a stable state without deformation, wherein the length is Lii; and finally, calculating the retraction elasticity through the three numerical values, and selecting the chemical fiber filament.

Step two: the core yarn material is pretreated by the following method: the hard filaments 2 are subjected to drawing, vibration, and winding processes. The drawing treatment is a drawing treatment in which the hard filaments 2 are drawn by passing them at least once through a tension roll by a carrying roll. The vibration treatment is a treatment of fixing both ends of one section of the hard filament 2 in the process of pulling and conveying the hard filament 2, and swinging the hard filament 2 up and down through manpower or equipment with a swing arm to generate vibration. During swinging, the hard filaments are swung up and down, and the hard filaments deform a little, so that deformation quantity is generated in advance, and the deformation quantity of the glove product manufactured in the later period is reduced. The winding treatment refers to a process that the hard filament 2 is wound at least once before being twisted with the chemical fiber filament 3 for two times so as to improve the deformation adaptability of the hard filament 2. The hard filaments are deformed to some extent, so that the problem of excessive deformation caused by too long stretching in later use can be solved, and the problem of bare core yarns is solved.

Step three, twisting for two times: and (3) mutually winding the hard filaments 2 and the chemical fiber filaments 3 in the Z direction or the S direction by adopting a two-for-one twister to obtain the core yarn.

Step four, packaging: and (3) making the covering yarn and the core yarn into the multi-core covering yarn through a covering process. Wherein, ring spinning, vortex spinning or friction spinning can be adopted to obtain the staple fiber covered yarn.

Example 2:

the difference from the embodiment 1 is that: as shown in fig. 3, the hard filaments 2 are arranged in parallel with the cushion core yarn 3. The hard filaments 2 and the cushion core yarn 3 are arranged in parallel by a doubling machine to obtain the core yarn. The core yarn arranged in parallel is subjected to most of the stretching force by the cushion core yarn as the cushion yarn when the yarn is stretched in the longitudinal direction, and the other hard filament is subjected to a smaller stretching force and thus is not broken and is not elongated much.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A multicore covering yarn structure of increase covering stability, includes core yarn and package yarn (1), the core yarn has two at least, package yarn (1) parcel is outside the core yarn, its characterized in that: at least one core yarn adopts hard filaments (2), at least one core yarn adopts chemical fiber filaments (3) with the breaking elongation of less than 50% and the retraction elasticity of 10% -30%, and the hard filaments (2) and the chemical fiber filaments (3) are mutually wound.

2. The multi-core-spun yarn structure of claim 1, wherein: the covering yarn (1) is short fibers, and a plurality of short fibers are gathered on the surface layer of the core yarn to form the multi-core covering yarn.

3. A multiple core spun yarn structure of claim 2 having increased core stability, wherein: the short fiber is one of polyethylene short fiber, aramid short fiber, terylene, chinlon, viscose, tencel, modal, polypropylene fiber, cotton and acrylic fiber.

4. A multiple core spun yarn structure of claim 2 having increased core stability, wherein: the length of the short fiber is 20mm-75 mm.

5. A multiple core spun yarn structure of claim 2 having increased core stability, wherein: the thickness of the short fiber is 0.8D-3.5D.

6. The multi-core-spun yarn structure of claim 1, wherein: the chemical fiber filament (3) is one of polyester filament, polyethylene filament and aramid 1414 filament.