CN111621887A - Multi-core-spun yarn structure for increasing core-spun stability and manufacturing process thereof - Google Patents
Multi-core-spun yarn structure for increasing core-spun stability and manufacturing process thereof Download PDFInfo
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/36—Cored or coated yarns or threads
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/12—Threads containing metallic filaments or strips
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/442—Cut or abrasion resistant yarns or threads
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/443—Heat-resistant, fireproof or flame-retardant yarns or threads
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- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
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- D10B2101/00—Inorganic fibres
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- D10B2101/00—Inorganic fibres
- D10B2101/02—Inorganic fibres based on oxides or oxide ceramics, e.g. silicates
- D10B2101/06—Glass
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- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
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- D10B2101/00—Inorganic fibres
- D10B2101/20—Metallic fibres
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- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
- D10B2201/02—Cotton
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/20—Cellulose-derived artificial fibres
- D10B2201/22—Cellulose-derived artificial fibres made from cellulose solutions
- D10B2201/24—Viscose
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
- D10B2331/021—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides aromatic polyamides, e.g. aramides
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/16—Physical properties antistatic; conductive
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- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/22—Physical properties protective against sunlight or UV radiation
Abstract
The invention relates to the technical field of multi-core-spun yarns, in particular to a multi-core-spun yarn structure for improving the core-spun stability and a manufacturing process thereof. 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 buffer core yarns with the breaking elongation of less than 50% and the retraction elasticity of less than 30%, and the hard filaments and the buffer core yarns are mutually wound or arranged in parallel. The invention adopts the buffering core yarn meeting certain requirements to buffer and protect the hard filament, solves the problem that the hard filament has no retraction performance or is easy to break after being stretched, and also controls the occurrence probability of the core yarn exposure problem.
Description
Technical Field
The invention relates to the technical field of multi-core-spun yarns, in particular to a multi-core-spun yarn structure for improving the core-spun stability and a manufacturing process thereof.
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.
Disclosure of Invention
In view of the shortcomings of the prior art, one of the objectives of the present invention is to provide a multi-core-spun yarn structure with increased core-spun stability.
The above object of the present invention is achieved by the following technical solutions: the multi-core-spun yarn structure for increasing the core-spun stability comprises core yarns and covering yarns, wherein at least two core yarns are arranged, 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 buffer core yarns, the breaking elongation of the buffer core yarns is smaller than 50%, the retraction elasticity of the buffer core yarns is 10% -30%, and the hard filaments and the buffer core yarns are mutually wound or arranged in parallel.
By adopting the technical scheme, one of the core yarns is wound by the buffer core yarn with the extension capability and the retraction capability and the hard filament, and the buffer core yarn can wrap the hard filament to replace the hard filament to provide the deformation capability and provide the extensibility for the glove woven by the multi-core-spun yarn. If the hard filaments are metal filaments, the hard filaments do not have retraction performance after being stretched, and the extra parts after being stretched can be wound with the buffer core yarns, 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 filaments are basalt filaments, when the breakage condition occurs under severe conditions, the core yarn is still relatively stable, the buffer core yarn is wound for protection, and the condition that the direct long section of the broken hard filaments is exposed outside is avoided. Thus, the cushion core yarn constitutes a cushion protector in the case of arching or breaking of the hard filaments, and constitutes a core yarn having a cushion function together with the hard filaments. 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 buffer core yarn with the elongation breaking rate of more than 50 percent has overlarge deformation range and is generally thicker than a single yarn body. The retraction elasticity of the buffer core yarn is less than 10 percent, the retraction performance is poor, and the ductility use requirement of the glove cannot be met. The buffer core yarn 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 in a preferred example may be further configured to: said retractive elasticity being according to the formula QUOTE
Obtaining, in the formula, QUOTE
(ii) a RLII is the retraction of the buffer core yarn after stretching expressed in percent; li is the total length of the buffer core yarn after stretching, and the unit is mm; lii means that the stretched cushion core yarn is released and then returns to the fixed stateOverall length in mm in the state.
By adopting the technical scheme, the retraction elasticity calculation of the buffer core yarn is limited, and not all fibers are suitable for being used as the buffer protection piece of the hard filament.
The present invention in a preferred example may be further configured to: the covering yarn is 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 fibers comprise one or more of polyethylene short fibers, aramid short fibers, terylene, chinlon, viscose, tencel, modal, polypropylene fibers, cotton and acrylic fibers.
By adopting the technical scheme, the multi-core covering yarn and the textile thereof are soft and have good hand feeling. 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 in a preferred example may be further configured to: the length of the short fiber is 20mm-75mm, and the thickness of the short fiber is 0.8D-3.5D.
By adopting the technical scheme, the softness of the short fibers is higher, the short fibers are mutually bound, and the wrapping effect is good.
The present invention in a preferred example may be further configured to: the buffer core yarn 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.
The invention also aims to provide a manufacturing process of the multi-core covering yarn structure for improving the stability of covering, and the technical scheme is as follows: the method comprises the following steps:
step one, material selection: the hard filament can be one of metal wire, glass fiber filament and basalt filament; the buffer core yarn is made of fibers with the elongation at break less than 50% and the retraction elasticity of 10-30%, and the value of the retraction elasticity can be determined according to QUOTE
Obtained by calculation, in the formula, QUOTE
；
Step two, two-for-one twisting: mutually winding the hard filament yarn and the buffer core yarn in a Z direction or an S direction by adopting a two-for-one twister or a covering machine to obtain the core yarn;
step three, packaging: and (3) making the covering yarn and the core yarn into the multi-core covering yarn through a covering process.
By adopting the technical scheme, the manufacturing method of the multi-core covering yarn is provided, and compared with the traditional environment, the scheme is mainly characterized by selecting materials and selecting raw materials more particularly. The other core yarn selected in the scheme needs to meet the requirements of the elongation at break and the retraction elasticity, so that the hard filament core yarn can be protected in a buffering manner.
The present invention in a preferred example may be further configured to: in the first step, the method for obtaining the calculated value of the retraction elasticity comprises the following steps: taking a section of the buffer core yarn 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 buffering core yarn.
By adopting the technical scheme, the accurate retraction elasticity value can be obtained, so that the optimal buffering core yarn is obtained.
The invention also aims to provide a manufacturing process of the multi-core covering yarn structure for improving the stability of covering, and the technical scheme is as follows: the method comprises the following steps:
step one, material selection: the hard filament can be one of metal filament and mineral fiber filament; the buffer core yarn is selected from fibers with the breaking elongation of less than 50% and the retraction elasticity of less than 30%, and the value of the retraction elasticity can be obtained by calculating according to RLII = delta L/Li multiplied by 100, wherein, the delta L = Li-Lii;
step two, two-for-one twisting: arranging the hard filaments and the buffer core yarns in parallel by adopting a doubling machine to obtain core yarns;
step three, packaging: and (3) making the covering yarn and the core yarn into the multi-core covering yarn through a covering process.
By adopting the technical scheme, another method for manufacturing the multi-core covering yarn is provided, and the method is mainly different from the previous method in the arrangement mode of two core yarns. 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 present invention in a preferred example may be further configured to: in the first step, the method for obtaining the calculated value of the retraction elasticity comprises the following steps: taking a section of the buffer core yarn 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 buffering core yarn.
By adopting the technical scheme, the accurate retraction elasticity value can be obtained, so that the optimal buffering core yarn is obtained.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the hard filament is protected in a buffering way by the buffering core yarn 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 bare core yarn is also controlled;
2. the reasonable formula provides basis for the selection of the buffering core yarn, so that the proper buffering core yarn is selected more accurately.
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. the core yarn is buffered.
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 adopts hard filaments 2, at least one of the core yarns adopts buffer core yarns 3 with the breaking elongation of less than 50% and the retraction elasticity of 10% -30%, and the hard filaments 2 and the buffer core yarns 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 represents the retraction of the cushion core yarn 3 after stretching in percentage;
li means the overall length of the cushion core yarn 3 after drawing, in mm;
lii means the total length in mm of the stretched cushion core yarn 3 when it is released and returned to a fixed state.
An accurate value of the retractive elasticity can be obtained by the above formula, thereby obtaining a preferable proper cushion core yarn 3.
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 cushion core yarn 3 is selected from fibers having an elongation at break of less than 50% and a retractive elasticity of 10% to 30%, and the value of the retractive elasticity can be calculated from RLII = Δ L/Li × 100, where Δ L = Li — Lii.
The calculated value of retraction elasticity was obtained as follows: taking a section of the buffer core yarn 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 buffering core yarn.
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 filaments 2 are wound at least once before being twisted with the buffer core yarn 3 for two times so as to improve the deformation adaptability of the hard filaments 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: the hard filament 2 and the cushion core yarn 3 are twisted with each other in the Z direction or the S direction by 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 embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
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 buffer core yarns (3) with the breaking elongation of less than 50% and the retraction elasticity of less than 30%, and the hard filaments (2) and the buffer core yarns (3) are mutually wound or arranged in parallel.
2. The multi-core-spun yarn structure of claim 1, wherein: 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 buffer core yarn after drawing (3) in percentage; li is the total length of the buffer core yarn after stretching, and the unit is mm; lii is the total length in mm of the stretched cushion core yarn (3) when it returns to a fixed state after being released.
3. The multi-core-spun yarn structure of claim 1, wherein: the covering yarn (1) is short fibers, 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 fibers comprise one or more of polyethylene short fibers, aramid short fibers, terylene, chinlon, viscose, tencel, modal, polypropylene fibers, cotton and acrylic fibers.
4. The multi-core-spun yarn structure of claim 1, wherein: the length of the short fiber is 20mm-75mm, and the thickness of the short fiber is 0.5D-3D.
5. The multi-core-spun yarn structure of claim 1, wherein: the buffer core yarn (3) contains at least one of terylene, polyethylene, aramid fiber, nylon, polypropylene fiber and mineral fiber.
6. A manufacturing process of a multi-core covering yarn structure for increasing the stability of covering is characterized by comprising the following steps:
step one, material selection: the hard filament (2) can be one of a metal wire and a mineral fiber filament; the cushion core yarn (3) is selected from fibers having an elongation at break of less than 50% and a retractive elasticity of less than 30%, the retractive elasticity being calculated from RLII = Δ L/Li × 100, where Δ L = Li-Lii;
step two, two-for-one twisting: mutually winding the hard filament (2) and the buffer core yarn (3) in a Z direction or an S direction by adopting a two-for-one twister or a covering machine to obtain the core yarn;
step three, packaging: and (3) making the covering yarn and the core yarn into the multi-core covering yarn through a covering process.
7. The process for manufacturing the multicore covering yarn according to claim 6, wherein in the first step, the calculated value of the retractive elasticity is obtained by: taking a section of the buffer core yarn (3) 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; finally, the retraction elasticity is calculated through three numerical values, and the buffering core yarn (3) is selected.
8. A manufacturing process of a multi-core covering yarn structure for increasing the stability of covering is characterized by comprising the following steps:
step one, material selection: the hard filament (2) can be one of a metal wire and a mineral fiber filament; the cushion core yarn (3) is selected from fibers having an elongation at break of less than 50% and a retractive elasticity of less than 30%, the retractive elasticity being calculated from RLII = Δ L/Li × 100, where Δ L = Li-Lii;
step two, two-for-one twisting: arranging the hard filaments (2) and the buffer core yarns (3) in parallel by adopting a doubling machine to obtain core yarns;
step three, packaging: and (3) making the covering yarn and the core yarn into the multi-core covering yarn through a covering process.
9. The process of claim 8, wherein in the first step, the calculated value of the retractive elasticity is obtained by the following steps: taking a section of the buffer core yarn (3) 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; finally, the retraction elasticity is calculated through three numerical values, and the buffering core yarn (3) is selected.
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| CN202010457029.8A CN111621887A (en) | 2020-05-26 | 2020-05-26 | Multi-core-spun yarn structure for increasing core-spun stability and manufacturing process thereof |
| PCT/CN2021/093760 WO2021238677A1 (en) | 2020-05-26 | 2021-05-14 | Multi-core core-wrapped yarn structure capable of increasing core-wrapping stability and manufacturing process therefor |
| JP2021537702A JP7362149B2 (en) | 2020-05-26 | 2021-05-14 | Multicore core yarn structure and its production process that improves the stability of core yarn coating |
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| WO2021238677A1 (en) * | 2020-05-26 | 2021-12-02 | 常州科旭纺织有限公司 | Multi-core core-wrapped yarn structure capable of increasing core-wrapping stability and manufacturing process therefor |
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| CA1133654A (en) * | 1976-10-05 | 1982-10-19 | Robert M. Byrnes, Sr. | Protective gloves and the like and a yarn with flexible core wrapped with aramid fiber |
| US4470251A (en) * | 1978-03-30 | 1984-09-11 | Bettcher Industries, Inc. | Knittable yarn and safety apparel made therewith |
| JPS61266627A (en) * | 1985-05-21 | 1986-11-26 | 旭化成株式会社 | Composite yarn |
| JPS62153326U (en) * | 1986-03-24 | 1987-09-29 | ||
| JPH02160943A (en) * | 1988-12-14 | 1990-06-20 | Shikishima Boseki Kk | Covering yarn machine sewing thread |
| US7121077B2 (en) * | 2000-10-31 | 2006-10-17 | World Fibers, Inc. | Antimicrobial cut-resistant composite yarn and garments knitted or woven therefrom |
| US7175908B2 (en) * | 2003-06-30 | 2007-02-13 | Connolly Jr Thomas J | High temperature search line |
| US20050086924A1 (en) * | 2003-10-28 | 2005-04-28 | Supreme Elastic Corporation | Glass-wire core composite fiber and articles made therefrom |
| JP4897684B2 (en) * | 2005-08-01 | 2012-03-14 | ショーワグローブ株式会社 | Cut-resistant gloves using composite fibers |
| CN203834094U (en) * | 2014-01-17 | 2014-09-17 | 绍兴超特合纤有限公司 | High-performance composite yarn |
| CN206127533U (en) * | 2016-06-20 | 2017-04-26 | 常州科旭纺织有限公司 | Double -contracting covering yarn |
| EP3656901A4 (en) * | 2017-07-10 | 2021-06-23 | Hayashi Yarn Twisting Co., Ltd. | Covering yarn, twisted yarn, and fiber structure using same |
| CN109667012A (en) * | 2017-10-16 | 2019-04-23 | 南良实业股份有限公司 | High-tenacity cut-resistant composite yarn line and its preparation method |
| WO2019104370A1 (en) * | 2017-11-29 | 2019-06-06 | Ansell Limited | Highly cut-resistant composite yarns |
| CN111088585B (en) * | 2020-01-06 | 2021-12-28 | 常州科旭纺织有限公司 | Short fiber coated gloves and manufacturing process thereof |
| CN111621887A (en) * | 2020-05-26 | 2020-09-04 | 常州科旭纺织有限公司 | Multi-core-spun yarn structure for increasing core-spun stability and manufacturing process thereof |
| CN212741646U (en) * | 2020-05-26 | 2021-03-19 | 常州科旭纺织有限公司 | Multi-core covering yarn structure for increasing covering stability |
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| WO2021238677A1 (en) * | 2020-05-26 | 2021-12-02 | 常州科旭纺织有限公司 | Multi-core core-wrapped yarn structure capable of increasing core-wrapping stability and manufacturing process therefor |
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