CN108914304B - Preparation process of low-twist cotton-nylon covered yarn - Google Patents

Preparation process of low-twist cotton-nylon covered yarn Download PDF

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CN108914304B
CN108914304B CN201810784686.6A CN201810784686A CN108914304B CN 108914304 B CN108914304 B CN 108914304B CN 201810784686 A CN201810784686 A CN 201810784686A CN 108914304 B CN108914304 B CN 108914304B
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yarn
twist
yarns
twisting
same
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CN108914304A (en
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潘俊品
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Zhangjiagang Longli Spandex Yarn Factory
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Zhangjiagang Longli Spandex Yarn Factory
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    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/38Threads in which fibres, filaments, or yarns are wound with other yarns or filaments, e.g. wrap yarns, i.e. strands of filaments or staple fibres are wrapped by a helically wound binder yarn
    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/04Blended or other yarns or threads containing components made from different materials
    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/26Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2201/00Cellulose-based fibres, e.g. vegetable fibres
    • D10B2201/01Natural vegetable fibres
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2201/00Cellulose-based fibres, e.g. vegetable fibres
    • D10B2201/01Natural vegetable fibres
    • D10B2201/02Cotton
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2201/00Cellulose-based fibres, e.g. vegetable fibres
    • D10B2201/20Cellulose-derived artificial fibres
    • D10B2201/22Cellulose-derived artificial fibres made from cellulose solutions
    • D10B2201/24Viscose
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/02Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04Fibres 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]

Abstract

The invention relates to the production field of low-twist cotton-nylon covered yarns, in particular to a preparation process of low-twist cotton-nylon covered yarns, which comprises the following steps: (1) preparing yarn: preparing two single yarns of fibers such as cotton, viscose, tencel, hemp and the like, twisting in the same direction, and combining two strands into a folded yarn (2) to prepare a core yarn: the nylon yarn with the same thickness adopts one S twist and one Z twist to be crossed and wound together with the same twist, and the same thickness and the same twist are opposite in rotating direction, so that the double-strand yarn is untwisted (3) to be coated and twisted: the mechanical covering machine is used for covering and twisting, the core wire passes through the middle of the spindle, and the pre-twisted yarn of the yarn tube of the mechanical covering machine rotates around the core wire to be twisted, wherein the twisting direction is opposite to that of the single yarn. The invention mainly solves the problems that the warp and weft yarns of the burnt-patterned clothes are used for producing the low-twist cotton-nylon covered yarns, the core silk-nylon yarns are crossed and wound together by adopting a method of winding 2 same-thickness same-twist yarns without twisting, so that the friction force is increased among the core silks exposed out of the burnt-patterned part of the clothes, the slippage phenomenon among the silks is greatly reduced, and the clothes are more beautiful.

Description

Preparation process of low-twist cotton-nylon covered yarn
Technical Field
The invention relates to the production field of low-twist cotton-nylon covered yarns, in particular to a preparation process of low-twist cotton-nylon covered yarns.
Background
The traditional coating production is that cotton yarn core yarn is twisted, the twist is higher, the lowest twist is more than two and three hundred, the core yarn is spandex, if the cotton yarn and chinlon are combined firstly and then twisted by a two-for-one twister, the core yarn and chinlon participate in twisting, and the coating yarn processed by the method has the following defects: 1. the nylon core yarn has higher twist, and can be mutually wound when being used as the denim warp yarn and subjected to warp drafting and size dyeing, the warp dividing is difficult, the broken ends are increased, the warp drafting and size dyeing speed is seriously influenced, the warp loosing phenomenon is greatly increased, and the fabric yield is seriously influenced; 2. the nylon yarn has higher twist, the burnt-flower garment is in a relaxed state, the core yarn exposed out of the burnt-flower part generates a twisting and sliding phenomenon, the attractiveness of the garment is seriously influenced, and the low-twist covered yarn without cotton and low-F-number nylon core yarn is available in the market at present; due to the reasons, the burnt-out jean fabric and the clothes cannot be produced in batch.
Disclosure of Invention
The invention mainly solves the problem that the warp and weft yarns of the burnt-pattern clothes are used for producing low-twist cotton-nylon coated yarns, the core silk-nylon yarns are formed by adopting a processing method that 2 pieces of core silk yarns with the same thickness and twist are twisted in opposite directions in a crossed manner, the core silk produced by the method is untwisted, the friction force is increased among the core silk exposed out of the burnt-pattern part of the clothes, the slippage phenomenon among the silk yarns is greatly reduced, and the clothes are more attractive.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a preparation process of low-twist cotton-nylon covered yarns comprises the following steps:
(1) preparing yarn: preparing two single yarns of cotton, viscose, tencel, hemp and other fibers, twisting in the same direction, and combining the two yarns into a folded yarn;
(2) preparing a core wire: the nylon yarns with the same thickness are crossly wound together by adopting S twist and Z twist, and double-strand yarns have no twist because of the same thickness and twist and opposite rotation directions;
(3) coating and twisting: the mechanical covering machine is used for covering and twisting, the core wire passes through the middle of the spindle, and the pre-twisted yarn of the yarn tube of the mechanical covering machine rotates around the core wire to be twisted, wherein the twisting direction is opposite to that of the single yarn.
As an improvement, the process of the step (1) is as follows:
1) preparing yarn: preparing two single yarns, wherein the single yarns are made of cotton, viscose, tencel, hemp and other fibers, the count is 12-80, the twist is any twist covered by the count of the yarns, the twist directions of the two single yarns are the same, the two single yarns can be made of the same material and the same count, can also be made of the same material and different counts, can be made of different materials and the same count, and can be made of different materials and different counts;
2) and (3) doubling: two single yarns adopt ring spinning in the same twisting direction, and are doubled on a double-doubling frame;
3) pre-twisting: pre-twisting on a two-for-one twister, wherein the pre-twisting direction can be the same as or opposite to that of single yarn;
4) yarn pouring: and (4) rewinding the pre-twisted yarn on a bobbin of a mechanical covering machine in a short fiber high-speed bobbin winder.
As an improvement, the step (1) adopts ring spinning single yarn with the sum of two single yarns, namely, the yarns are poured onto the yarn tube of the mechanical covering machine on a high-speed bobbin winder.
As an improvement, the process of the step (2) is as follows: the nylon yarns with the same thickness are twisted by S and Z between 30D and 70D and between 1F and 24F, and are crossly wound together with the same twist, or the nylon yarns from 1F to 24F and from 60D to 100D are directly used as core yarns without processing.
As an improvement, when the pre-twisting direction in the step 3) is the same as the single yarn twisting direction, the value of the twisting twist minus the quarter of the sum of the pre-twisting twist and the two single yarn twists is close to or equal to each other; and when the pre-twisting direction in the step 3) is opposite to the single yarn twisting direction, the number of the coating twisting twists plus one fourth of the sum of the pre-twisting twist and the two single yarn twists is close to or equal to each other.
As an improvement, the nylon yarns in the step (2) can be replaced by polyester yarns.
As an improvement, in the step (3), the core yarn is untwisted, and the cladding yarn is low-twisted or untwisted.
The invention has the beneficial effects that: the core yarn of the invention does not participate in twisting, the process method that two strands of cotton in the same twisting direction and single yarn of cotton twist in opposite directions ensures that the finished folded yarn is twisted in low twist or no twist, ensures that the core yarn is untwisted, avoids the phenomenon that the folded yarn is twisted with each other in the warp direction in the sizing and dyeing process when being used as warp, greatly reduces the broken end rate in warp drawing and splitting, ensures that the exposed core yarn does not slide in the loose state of the burnt garment, increases the attractive appearance of the garment, adopts the method that 2 pieces of silk brocade yarns are twisted together in the opposite crossing directions with the same thickness and the same twist, has no twist, increases the friction force between the core yarns exposed from the burnt part of the garment, greatly lightens the sliding phenomenon between the yarns, makes the garment more attractive, and can realize the mass production of burnt-out jean fabric and garments because of the process improvement method.
Detailed Description
The invention is illustrated below by means of specific examples, without being restricted thereto.
Example one
1. Preparing yarn: preparing 32 count 850 twist/m Z twist all cotton ring spinning single yarn
A. And (3) doubling: two Z-twisted yarns with 850 twists/m of 32 counts are adopted for double-ply combination on a double-doubling machine, namely N1 is 850, and N2 is 850;
B. pre-twisting: pre-Z-twisting 100 twists on a short fiber two-for-one twister, wherein the twist direction is the same as that of a single yarn, and the negative value is n1 which is-100;
C. yarn pouring: and (4) rewinding the pre-twisted yarn on a bobbin of a mechanical covering machine in a short fiber high-speed bobbin winder.
2. Spare core silk
A. Silk rewinding: pouring 40D1F nylon bright yarns on a high-speed winder onto an aluminum pipe of a mechanical coating machine;
B. twisting: respectively twisting an upper layer and a lower layer of two filaments on the same spindle position by 500 twists in opposite directions;
the same thickness, same twist and opposite direction of twist, so the whole core yarn has no twist.
3. Coating of
Coating and twisting on an upper mechanical coating machine: the core wire passes through the middle of the spindle, the pre-twisted yarn rotates around the core wire to be twisted for 525, the S twisting direction takes a positive value, namely n2 is 525, and the core wire does not participate in twisting;
A. (N1+ N2)/4 ═ 850+850)/4 ═ 425, Z twist direction;
B. n1+ n 2-100 + 525-425, S twist direction;
a and B are equal in value and opposite in twisting direction, so that the outer wrapping cotton is not twisted theoretically, the core yarn is not twisted, and the wrapping yarn is not twisted theoretically.
Example two
1. Preparing yarn: preparing 32 counts of 850 twists/m Z and 40 counts of 1000 twists/m Z for CR ring spun single yarns, wherein the CR ratio is 60/40;
A. and (3) doubling: double-strand combination is carried out on a double-parallel machine, namely N1 is 850, and N2 is 1000;
B. pre-twisting: pre-Z-twisting 100 twists on a short fiber two-for-one twister, wherein the twist direction is the same as that of a single yarn, and the negative value is n1 which is-100;
C. yarn pouring: and (4) rewinding the pre-twisted yarn on a bobbin of a mechanical covering machine in a short fiber high-speed bobbin winder.
2. Spare core silk
A. Silk rewinding: pouring 50D1F nylon bright yarns on a high-speed winder onto an aluminum pipe of a mechanical coating machine;
B. twisting: respectively twisting an upper layer and a lower layer of two filaments on the same spindle position by 500 twists in opposite directions;
the same thickness, same twist and opposite direction of twist, so the whole core yarn has no twist.
3. Coating of
Coating and twisting on an upper mechanical coating machine: the core wire passes through the middle of the spindle, the pre-twisted yarn rotates around the core wire, 562 is added to twist, and the S twist direction takes a positive value, namely n2 is 562. The core yarn does not participate in twisting;
A. (N1+ N2)/4 ═ 850+1000)/4 ═ 462.5, Z twist direction;
B. n1+ n 2-100 + 562-462, S twist;
a and B are similar in value, and the twisting directions are opposite, so that the wrapping yarn is theoretically low-twisted due to the fact that the cotton is wrapped outside, and the core yarn is untwisted, and therefore the wrapping yarn is theoretically low-twisted.
EXAMPLE III
1. Preparing yarn: preparing 32 count 850 twist/m Z twist cotton and 32 count 750 twist/m Z twist ramie ring spinning single yarn
A. And (3) doubling: double-strand combination is carried out on a double-parallel machine, namely N1 is 850, and N2 is 750;
B. pre-twisting: pre-twisting 100 twists on a short fiber two-for-one twister, wherein the twist direction of the short fiber two-for-one twister is opposite to that of a single yarn, and the positive value is n1 equal to 100;
C. yarn pouring: and (4) rewinding the pre-twisted yarn on a bobbin of a mechanical covering machine in a short fiber high-speed bobbin winder.
2. Spare core silk
A. Silk rewinding: pouring 50D1F nylon bright yarns on a high-speed winder onto an aluminum pipe of a mechanical coating machine;
B. twisting: respectively twisting an upper layer and a lower layer of two filaments on the same spindle position by 500 twists in opposite directions;
the same thickness, same twist and opposite direction of twist, so the whole core yarn has no twist.
3. Coating of
Coating and twisting on an upper mechanical coating machine: the core wire passes through the middle of the spindle, the pre-twisted yarn rotates around the core wire and is twisted by 300, and the S twisting direction takes a positive value, namely n2 is 300. The core yarn does not participate in twisting;
A. (N1+ N2)/4 ═ 400 (850+750)/4, Z twist direction;
B. n1+ n2 is 100+300 is 400, S twist direction;
a and B are equal in value and opposite in twisting direction, so that the outer wrapping cotton is not twisted theoretically, the core yarn is not twisted, and the wrapping yarn is not twisted theoretically.
Example four
1. Preparing yarn: preparing 32 count 850 twist/m Z twist tencel ring spinning single yarn
A. And (3) doubling: double-strand combination is carried out on a double-parallel machine, namely N1 is 850, and N2 is 850;
B. pre-twisting: pre-Z-twisting 100 twists on a short fiber two-for-one twister, wherein the twist direction is the same as that of a single yarn, and the negative value is n1 which is-100;
C. yarn pouring: and (4) rewinding the pre-twisted yarn on a bobbin of a mechanical covering machine in a short fiber high-speed bobbin winder.
2. Spare core silk
The 100D terylene single 2F nylon yarn is directly used as a core yarn to enter the next process.
3. Coating of
Coating and twisting on an upper mechanical coating machine: the 100D single 2F core yarn passes through the middle of the spindle, the pre-twisted yarn rotates around the core yarn to be twisted for 525, the S twisting direction takes positive value, namely n2 is 525. The core yarn does not participate in twisting;
A. (N1+ N2)/4 ═ 850+850)/4 ═ 425, Z twist direction;
B. n1+ n 2-100 + 525-425, S twist direction;
a and B are equal in value and opposite in twisting direction, so that the outer wrapping cotton is not twisted theoretically, the core yarn is not twisted, and the wrapping yarn is not twisted theoretically.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (4)

1. A preparation process of low-twist cotton-nylon covered yarns for burnt-on clothes is characterized by comprising the following steps:
(1) preparing yarn: preparing two single yarns, wherein the single yarns comprise cotton, viscose, tencel and fibrilia, the count is 12-80, the twist is any twist covered by the count of the yarns, the twist directions of the two single yarns are the same, and the two single yarns are made of one of the same material, the same count, different counts, different materials and the same count or different counts;
and (3) doubling: two single yarns adopt ring spinning in the same twisting direction, and are doubled on a double-doubling frame;
pre-twisting: pre-twisting on a two-for-one twister, wherein the pre-twisting direction is the same as or opposite to that of the single yarn;
yarn pouring: the pre-twisted yarn is reversely twisted on a yarn tube of a mechanical covering machine in a short fiber high-speed bobbin winder;
(2) preparing a core wire: the nylon yarns with the same thickness are crossly wound together by adopting S twist and Z twist, and double-strand yarns have no twist because of the same thickness and twist and opposite rotation directions;
(3) coating and twisting: the mechanical covering machine is used for covering and twisting, the core wire passes through the middle of the spindle, and the pre-twisted yarn of the yarn tube of the mechanical covering machine rotates around the core wire to be twisted, wherein the twisting direction is opposite to that of the single yarn.
2. The process for preparing the low-twist cotton-and-nylon covered yarn for the burnt flower clothes according to claim 1, wherein the pre-twist direction is the same as the single-yarn twist direction, and the number of the covered twist minus the quarter of the sum of the pre-twist and the two single-yarn twists is close to or equal to one quarter; when the pre-twist direction is opposite to the single yarn twist direction, the number of the pre-twist is close to or equal to the sum of the two single yarn twists and the sum of the pre-twist and the two single yarn twists.
3. The preparation process of the low-twist cotton-nylon covered yarn for the burnt-on clothes according to claim 1, wherein the nylon yarn in the step (2) is replaced by polyester yarn.
4. The process for preparing the low-twist cotton-and-nylon covered yarn for the burnt-on clothes according to claim 1, wherein in the step (3), the core yarn is untwisted, and the covered yarn is low-twisted or untwisted.
CN201810784686.6A 2018-07-17 2018-07-17 Preparation process of low-twist cotton-nylon covered yarn Active CN108914304B (en)

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CN109468727A (en) * 2018-12-20 2019-03-15 杭州新天元织造有限公司 The wear-resisting ventilative shell fabric of one kind and its production technology
CN110257997A (en) * 2019-05-22 2019-09-20 苏州卫炜纺织有限公司 Functional fiber dyed yarn, fabric and preparation method thereof
CN113062029A (en) * 2021-03-17 2021-07-02 四川意龙科纺集团有限公司 Production process of bidirectional cotton bale brocade fabric
CN113265740A (en) * 2021-05-31 2021-08-17 鲁泰纺织股份有限公司 Pure cotton georgette yarn woven fabric and production method thereof

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