CN110067059B - Production method of composite blended yarn - Google Patents
Production method of composite blended yarn Download PDFInfo
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- CN110067059B CN110067059B CN201910427777.9A CN201910427777A CN110067059B CN 110067059 B CN110067059 B CN 110067059B CN 201910427777 A CN201910427777 A CN 201910427777A CN 110067059 B CN110067059 B CN 110067059B
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- viscose
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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
- D02G3/22—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
- 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
- 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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- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
The invention discloses a production method of composite blended yarn, which comprises the steps of drafting and breaking two long tows in a roving process, covering the core of one long tow, and drafting and breaking the long tows of the covered core in a spinning process, so that three times of blending processes of long filaments and short fibers are realized, and the production of the composite blended yarn is realized.
Description
Technical Field
The invention belongs to the technical field of spinning, and relates to a novel yarn spinning method, in particular to a production method of composite blended yarn.
Background
With the development of social economy, the living standard of people is continuously improved, and for textiles for clothes, in addition to the pursuit of wearing comfort, the fashionability and functionality of the textiles for clothes are also paid more and more attention, and the pursuit of unique style and various functions such as antibacterial and antistatic functions are pursued. To meet this demand of consumers, new yarns and fabrics are continuously being developed as an important task in the textile industry. With the development of science and technology, the textile market competition is more and more intense, and each manufacturer continuously develops towards high-grade, good technical content and high added value in order to pursue the maximization of profit.
In this respect, the invention provides a method for producing a composite blended yarn, which comprises the steps of sequentially carrying out cotton grabbing and opening on viscose fibers, mixed cotton opening, porcupine cotton opening, automatic cotton feeding, cotton carding and two-pass drawing to obtain viscose drawn slivers, pressing and feeding the two viscose drawn slivers into a drafting system of a roving frame in an upper-lower structure, wherein the drafting system adopts a four-roller three-zone drafting structure, a first polyester filament bundle is positioned in the middle of the two viscose drawn slivers and is pressed into the drafting system together with the two viscose drawn slivers through a rear roller, the first polyester filament bundle is broken under the drafting action of the rear drafting system and is distributed in the stretched viscose slivers due to the resilience action after the breaking to obtain first viscose/polyester slivers, a second polyester filament bundle is positioned in the middle of the first viscose/polyester slivers and is pressed into the drafting system together with the first viscose/polyester slivers through the middle-rear roller, under the drafting action of the middle drafting zone, the second polyester filament bundle is broken and distributed in the first viscose/polyester fiber bundle thinned by drawing due to the resilience action after breaking so as to obtain a second viscose/polyester fiber bundle, the second viscose/polyester fiber bundle is finally stretched by the drafting action of the front drafting zone and slides the bent fiber in the fiber bundle and the stretched fiber so as to obtain a third viscose/polyester fiber bundle, the third polyester filament bundle is positioned in the middle of the third viscose/polyester fiber bundle and is pressed by a front roller together with the third viscose/polyester fiber bundle to output a drafting system, then under the action of twist, the outer covering roving is viscose/polyester mixed roving, the core yarn is core-covering roving of the third polyester filament bundle, and finally, under the drafting action of the drafting system of the core-covering spinning frame, the viscose/polyester fiber mixed roving in the core-covering roving is fed into the viscose/polyester fiber bundle in a bent state, the viscose staple fiber and the short fiber, The viscose staple fibers and the polyester staple fibers in the straightening state generate mutual sliding action, so that the viscose/polyester mixed roving is stretched and thinned, the longer polyester staple fibers obtained by stretch breaking are continuously stretched and broken into shorter polyester staple fibers, then viscose/polyester mixed fiber strips are obtained, third polyester filaments in the core-spun roving are stretch broken and distributed in the viscose/polyester mixed fiber strips which are synchronously stretched and thinned due to the resilience effect after the stretch breaking, and finally the final composite blended yarn is prepared under the action of twisting twist.
Disclosure of Invention
The technical problem to be solved is as follows: in order to overcome the defects of the prior art, the method realizes the three times of blending process of the filament and the short fiber by drawing and breaking two filament bundles in the roving process and core-spun of one filament bundle in the spinning process, thereby realizing the production of the composite blended yarn.
The technical scheme is as follows: the method comprises the steps of sequentially carrying out cotton grabbing, mixed cotton opening, porcupine cotton opening, automatic cotton feeding, cotton carding and two-pass drawing on viscose fibers to obtain viscose drawn slivers, pressing and feeding the two viscose drawn slivers into a drawing system of a roving frame together in an upper-lower structure, wherein the drawing system adopts a four-roller three-zone drawing structure, a first polyester filament bundle is positioned in the middle of the two viscose drawn slivers and is pressed into the drawing system together with the two viscose drawn slivers through a rear roller, the first polyester filament bundle is broken under the drawing action of a rear drawing zone and is distributed in the stretched and thinned viscose slivers due to the resilience action after being broken to obtain first viscose/polyester slivers, a second polyester filament bundle is positioned in the middle of the first viscose/polyester slivers and is pressed into the drawing system together with the first viscose/polyester slivers through the rear roller, and the second polyester filament bundle is broken under the drawing action of a middle drawing zone and is distributed in the stretched and deformed due to the resilience action after being broken The fine first viscose/polyester fiber strand is stretched in the first viscose/polyester fiber strand to obtain a second viscose/polyester fiber strand, the second viscose/polyester fiber strand is finally stretched and straightened by the drafting effect of the front drafting zone to realize the straightening and the slippage of the bent fiber in the fiber strand to obtain a third viscose/polyester fiber strand, the third polyester filament bundle is positioned in the middle of the third viscose/polyester fiber strand and is pressed by a front roller together with the third viscose/polyester fiber strand to output a drafting system, then the core-spun roving with the outer-spun roving of viscose/polyester mixed roving and the core filament of the third polyester filament bundle is prepared under the twisting twist action, finally the core-spun roving is fed into the drafting system of a spinning frame, and under the drafting effect of the drafting system, the viscose short fiber and the polyester short fiber in the bending state in the core-spun roving are straightened, and the viscose short fiber and the polyester short fiber in the straightening state mutually slippage effect are generated, so that the viscose/polyester mixed roving is stretched and thinned, The method comprises the following steps of continuously stretching and breaking long polyester staple fibers obtained by stretch breaking into short polyester staple fibers to obtain viscose/polyester mixed strands, stretch breaking third polyester filaments in core-spun roving and distributing the third polyester filaments in the viscose/polyester mixed strands which are synchronously stretched and thinned due to the resilience effect after the stretch breaking, and finally preparing final composite blended yarns under the action of twisting twist, wherein the method comprises the following steps:
the first step is as follows: cotton blending: selecting semi-refined viscose staple fiber and selecting polyester filament bundle as filament;
the second step is that: blowing and carding: the method comprises the following steps that selected viscose staple fibers are sequentially grabbed in proportion through a disc plucker, the mixed opener realizes mixing, opening and impurity removal of the grabbed viscose staple fibers, the porcupine opener realizes opening, carding and impurity removal of the viscose staple fibers, an automatic cotton supply box realizes uniform conveying of viscose staple fiber flow subjected to twice opening treatment in a fiber bundle form, a carding machine realizes fine carding and fine impurity removal of the conveyed viscose staple fiber bundle, and then viscose cotton carding strips are manufactured; the technological principles of reasonable cotton blending, multiple-package taking, frequent grabbing and less grabbing, reinforced mixing, short flow, low speed, fine cotton grabbing, gradual opening, rolling reduction, multiple carding, multiple loosening and less beating, thin feeding, light quantification, large spacing, early falling and less crushing, no damage to fibers, combing for beating and adhesion prevention are adopted in the opening process, and meanwhile, proper wetting and oil adding are carried out during material mixing to reduce the surface friction factor of the fibers; for the cotton grabbing process, according to the principle of fine cotton grabbing, the small grasping of the cotton grabbing amount of each tooth of a cotton grabbing beater blade of the disc cotton grabbing machine is ensured; for the mixed opening process, firstly, viscose fibers grabbed by a cotton grabbing machine are horizontally and horizontally tiled in layers and then vertically grabbed along the longitudinal direction of the viscose fiber layer through a first corner nail curtain, the viscose fibers grabbed along the transverse direction of the viscose fiber layer through a second corner nail curtain are horizontally grabbed to realize the mixing of various selected viscose fibers, meanwhile, the opening action of the viscose fibers is realized in the grabbing process, the viscose fibers grabbed by the first corner nail curtain and the second corner nail curtain are then recombined, so that the mixing of the viscose fibers is realized again, the mixed viscose fibers are then peeled by a cotton roller, the peeled viscose fibers are driven by the rotation of the cotton roller to separate and remove impurities through the cutting action of a dust rod on the surface of the cotton roller, in the porcupine opening process, a porcupine opening beater is arranged in the porcupine opening beater, the dust rod is arranged at the lower part of the outer circumference of the porcupine opening beater, the viscose fiber opening and impurity removing effects are completed by means of a mechanical part between a beater and a dust bar, the viscose fiber obtained by two opening effects flows through a viscose fiber bundle for opening, carding and uniform effects of a cotton box and is conveyed into a carding machine, the carding process adopts a process principle of 'high speed, tight spacing and strong carding', the carding process comprises three rotating parts, namely a licker-in, a cylinder and a doffer, wherein the licker-in, the cylinder and the doffer are arranged from back to front along the advancing direction of the fiber, the rotating speeds of the licker-in, the cylinder and the doffer are reduced in sequence, the directions of the licker-in and the cylinder are opposite, the directions of the cylinder and the doffer are opposite, so that the viscose fiber entering the carding machine is transferred from the licker-in to the cylinder and from the cylinder to the doffer in sequence, the effect of piercing and opening the corner pins of the viscose fiber is realized in the transferring process, and the directions of the pins are opposite to the directions of the cylinder and the cylinder are arranged on the upper part of the cylinder, The rotating cover plate has a rotating speed lower than that of the cylinder, so that the viscose fibers are carded under the relative rotation of the cylinder and the cover plate;
the third step: and (3) uniform drawing: adopts the process principles of proper gauge, stable holding, strong control, uniform drafting, smooth drafting, multiple combination, heavy pressurization, light quantification, large gauge, low speed and anti-winding, adopts large drafting force in the drafting process, adopts the principles of heavy pressurization, large gauge, smooth passage and anti-winding and anti-blocking in the process, the method comprises two drawing processes, wherein a drawing frame is selected in the first drawing, 8 viscose cotton carding strips prepared in the second step are jointly fed, a drawing system adopts a drawing multiple larger than 8, the fed 8 viscose cotton carding strips are drawn and attenuated by the drawing system of the drawing frame and then recombined to prepare viscose semi-finished strips, 8 viscose semi-finished strips are jointly fed in the second drawing, the drawing system adopts a drawing multiple larger than 8 and larger than that of the first drawing, and the fed 8 viscose semi-finished strips are drawn and attenuated by the drawing system of the drawing frame and then recombined to prepare viscose semi-finished strips;
the fourth step: roving: the method comprises the following steps of (1) selecting a roving frame, wherein a four-roller three-zone drafting structure is adopted for a drafting system of the roving frame, the four rollers sequentially comprise a front roller, a middle rear roller and a rear roller from front to back, a finishing zone is arranged between the front roller and the middle front roller, the holding distance is larger than the quality length of fibers, 40mm is selected as the holding distance, a main drafting zone is arranged between the middle front roller and the middle rear roller, the holding distance is equal to the length of a rubber ring frame plus the length of a free zone, 61mm is selected as the holding distance, simple roller drafting is arranged between the middle rear roller and the rear roller, and 58mm is selected as the holding distance; when in use, two viscose drawn slivers prepared in the third step are pressed and fed into a drafting system by a back roller, the two viscose drawn slivers are fed together in an up-down superposed structure, a first polyester filament bundle is positioned in the middle of the two viscose drawn slivers and enters the drafting system together with the two viscose drawn slivers through the back roller, the drafting multiple of a back drafting area is set to be 2 times that of the case that one viscose drawn sliver is fed for spinning, under the drafting action of the back drafting area, viscose staple fibers in a bent state in the fed viscose drawn slivers are stretched and straightened, and if the viscose staple fibers in a stretched state are continuously subjected to the drafting action after being stretched and straightened, the mutual sliding action is generated, so that the viscose drawn slivers are stretched and thinned to obtain viscose strands, and simultaneously the first polyester filament bundle is broken into first polyester staple fibers with certain length distribution under the drafting action, and because the rebound action distribution of the first polyester fiber after the stretch breaking makes the first polyester staple fiber obtained after the stretch breaking randomly distributed in the stretched and thinned viscose fiber strand to obtain a first viscose/polyester fiber strand, then the first viscose/polyester fiber strand enters a middle drafting zone by the pressing of a middle and back roller, meanwhile, a second polyester filament bundle is positioned in the middle of the first viscose/polyester fiber strand and is pressed into the middle drafting zone of a drafting system together with the first viscose/polyester fiber strand by the middle and back roller, under the drafting action of the middle drafting zone, the viscose staple fiber and the first polyester staple fiber in the fed first viscose/polyester fiber strand in a bending state are stretched and straightened, and if the viscose staple fiber and the first polyester staple fiber are stretched and straightened, the mutual sliding action is generated, the viscose staple fiber and the first polyester staple fiber in the straightening state are stretched and generate mutual sliding action, so that the first viscose/polyester fiber strand is stretched and thinned, the second polyester filament bundle is stretch-broken into second polyester staple fibers with certain length distribution under the action of drafting, the second polyester staple fibers obtained after stretch-breaking are randomly distributed in the first viscose/polyester fiber strand after stretch-breaking due to the distribution of the resilience of the second polyester fibers after stretch-breaking, meanwhile, the long staple fibers in the first polyester staple fibers or the filaments which are not stretch-broken in the rear drafting zone are continuously stretch-broken, the second polyester staple fibers are randomly distributed in the first viscose/polyester fiber strand after stretch-breaking under the distribution of the resilience after stretch-breaking, so that second viscose/polyester fiber strands are obtained, the second viscose/polyester fiber strands enter the front drafting zone under the pressing of the middle and front rollers, and the viscose staple fibers, the second polyester fiber strands and the second polyester fiber strands which are in a bending state are fed under the action of the drafting in the front drafting zone, The first polyester staple fiber and the second polyester staple fiber are stretched and straightened and then are continuously subjected to the drafting action to generate mutual sliding action, the viscose staple fiber, the first polyester staple fiber and the second polyester staple fiber which are in a straightened state are stretched to generate mutual sliding action, so that the second viscose/polyester fiber strip is stretched and thinned to obtain a third viscose/polyester fiber strip, the third viscose/polyester fiber strip is output from a drafting system by pressing of a front roller, meanwhile, a third polyester filament bundle is positioned in the middle of the third viscose/polyester fiber strip and is output from the drafting system together with the third viscose/polyester fiber strip by pressing of the front roller, and then the viscose staple fiber, the first polyester staple fiber and the second polyester staple fiber in the third viscose/polyester fiber strip are transferred under the action of twisting twist degree to enable the fibers to be mutually intertwined to prepare viscose/polyester mixed roving with certain strength, the third polyester filament bundle is wrapped at the center in the twisting process, so that the coated roving which is the viscose/polyester blended roving and the core yarn which is the core-spun roving of the third polyester filament bundle are prepared, and in the twisting process, the viscose staple fibers, the first polyester staple fibers and the second polyester staple fibers in the third viscose/polyester fiber strip are transferred to realize the mixing effect among the viscose staple fibers, the first polyester staple fibers and the second polyester staple fibers;
the fifth step: spinning: the method adopts the process principle of large gauge, medium twist, heavy pressurization, medium-elasticity medium-hard rubber covered rollers, medium speed, small back zone drafting, small jaw opening and proper temperature and humidity, selects a ring spinning frame, adopts a three-roller double-zone drafting structure for a drafting system of the spinning frame, and sequentially comprises a front roller, a middle roller and a back roller from front to back; during the use, the core-spun roving prepared in the fourth step is pressed by a rear roller and fed into a drafting system, under the drafting action of the drafting system, the viscose staple fibers in a bent state, the first polyester staple fibers and the second polyester staple fibers in the fed core-spun roving are stretched and straightened, and if the core-spun roving is stretched and straightened, the viscose staple fibers, the first polyester staple fibers and the second polyester staple fibers are stretched to generate mutual sliding action, so that the viscose/polyester mixed roving in the core-spun roving is stretched and thinned to obtain viscose/polyester mixed slivers, meanwhile, third polyester filament bundles in the core-spun roving are stretch-broken into third polyester staple fibers with certain length distribution under the drafting action, and the third polyester staple fibers obtained after the stretch-breaking are randomly distributed on the stretched and thinned viscose staple fibers due to the rebound action distribution of the third polyester fibers after the stretch-breaking In the polyester mixed fiber strip, the first polyester staple fiber and the second polyester staple fiber in the viscose/polyester mixed roving are continuously pulled apart, and the elastic action distribution after the stretch breaking is randomly distributed in the sticky/polyester mixed fiber strips after the stretching thinning, so as to obtain the finally required sticky/polyester composite fiber strips, the sticky/polyester composite fiber strips are pressed by a front roller and output to a drafting system, then transferring the viscose staple fibers, the first polyester staple fibers, the second polyester staple fibers and the third polyester staple fibers in the viscose/polyester composite fiber strips under the action of twisting twist to enable the fibers to be mutually intertwined so as to prepare a composite blended yarn with certain strength, and in the twisting process, the viscose staple fibers, the first polyester staple fibers, the second polyester staple fibers and the third polyester staple fibers in the viscose/polyester composite fiber strips are transferred to realize the mixing effect among the viscose staple fibers, the first polyester staple fibers, the second polyester staple fibers and the third polyester staple fibers.
Preferably, the size of the semi-refined viscose staple fiber selected in the first step is 1.3dtex multiplied by 38 mm.
Preferably, in the second step, the disc plucker is of type FA 002.
Preferably, in the second step, the mixing opener is of type A-035F.
Preferably, in the second step, the porcupine opener is of the FA106D type.
Preferably, in the second step, the automatic supply hopper is of the FA178 type.
Preferably, in the second step, the card is of the FA231C type.
Preferably, in the third step, the drawing frame is selected to be FA 320A.
Preferably, in the fourth step, the selected roving frame is THFA4423 type.
Preferably, the ring spinning frame selected in the fifth step is of FA503 type.
Has the advantages that: the production method of the composite blended yarn realizes three times of blending process of the filament and the short fiber by the drawing and the stretch breaking of two filament bundles in the roving process, the core covering of one filament bundle and the drawing and the stretch breaking of the core-covered filament bundle in the spinning process, thereby realizing the production of the composite blended yarn.
Detailed Description
The following examples further illustrate the present invention but are not to be construed as limiting the invention. Modifications and substitutions to methods, procedures, or conditions of the invention may be made without departing from the spirit and substance of the invention. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.
Example 1
To prepare a linear density of 21SThe composite blended yarn is taken as an example, and the corresponding process parameters are as follows:
(1) raw material selection and preparation
(2) Design of key process parameters
Opening and picking:
parameter setting of FA002 type disc type bale plucker
| Process parameters | Design of parameters |
| Distance of blade extending rib (mm) | 2.75 |
| Intermittent descending distance (mm/times) of cotton grabbing beater | 3.25 |
| Dolly rotation speed (r/min) | 0.85 |
| Rotational speed of cotton grab beater (r/min) | 740 |
Parameter setting of A-035F type mixed cotton opener
Parameter setting of FA106D type porcupine opener
Carding cotton:
drawing:
roving:
spinning:
Claims (10)
1. the production method of the composite blended yarn is characterized in that viscose staple fibers are sequentially subjected to cotton grabbing, mixed cotton opening, porcupine cotton opening, automatic cotton supply, cotton carding and two-pass drawing to prepare viscose drawn slivers, the two viscose drawn slivers are pressed and fed into a drafting system of a roving frame in an upper-lower structure, the drafting system adopts a four-roller three-zone drafting structure, a first polyester filament bundle is positioned in the middle of the two viscose drawn slivers and is pressed into the drafting system together with the two viscose drawn slivers through a rear roller, the first polyester filament bundle is broken under the drafting action of a rear drafting zone and is distributed in the stretched and thinned viscose slivers due to the resilience action after being broken to obtain a first viscose/polyester sliver, a second polyester filament bundle is positioned in the middle of the first viscose/polyester sliver and is pressed into the drafting system together with the first viscose/polyester sliver through the middle-rear roller, under the drafting action of the main drafting zone, the second polyester filament bundle is broken and distributed in the first viscose/polyester fiber strand thinned by drawing due to the resilience action after breaking so as to obtain a second viscose/polyester fiber strand, the second viscose/polyester fiber strand is finally stretched and the slide of the bent fibers in the fiber strand is realized by the drafting action of the finishing zone so as to obtain a third viscose/polyester fiber strand, the third polyester filament bundle is positioned in the middle of the third viscose/polyester fiber strand and is pressed together with the third viscose/polyester fiber strand by a front roller to output a drafting system, then under the action of twist, viscose/polyester mixed roving of the outer cover roving and core filament of the third polyester filament bundle are prepared, finally the core-spun roving is fed into the drafting system of a spinning frame, and under the drafting action of the drafting system, the viscose short fibers and short fiber quilt short fibers in the bent state in the viscose/polyester mixed roving in the core-spun roving are prepared, Viscose staple fibers and polyester staple fibers in a straightening state are subjected to mutual sliding action, so that viscose/polyester mixed roving is stretched and thinned, long polyester staple fibers obtained by stretch breaking are continuously stretched and broken into short polyester staple fibers, viscose/polyester mixed fiber strips are obtained, third polyester filaments in core-spun roving are stretch broken and distributed in the viscose/polyester mixed fiber strips synchronously stretched and thinned due to the resilience effect after the stretch breaking, and finally, the final composite blended yarn is prepared under the action of twisting twist, and the method comprises the following steps:
the first step is as follows: cotton blending: the viscose staple fibers are selected from semi-refined viscose staple fibers;
the second step is that: blowing and carding: the method comprises the following steps that selected viscose staple fibers are sequentially grabbed in proportion through a disc plucker, the mixed opener realizes mixing, opening and impurity removal of the grabbed viscose staple fibers, the porcupine opener realizes opening, carding and impurity removal of the viscose staple fibers, an automatic cotton supply box realizes uniform conveying of viscose staple fiber flow subjected to twice opening treatment in a fiber bundle form, a carding machine realizes fine carding and fine impurity removal of the conveyed viscose staple fiber bundle, and then viscose cotton carding strips are manufactured; the technological principles of reasonable cotton blending, multiple-package taking, frequent grabbing and less grabbing, reinforced mixing, short flow, low speed, fine cotton grabbing, gradual opening, rolling reduction, multiple carding, multiple loosening and less beating, thin feeding, light quantification, large spacing, early falling and less crushing, no damage to fibers, combing for beating and adhesion prevention are adopted in the opening process, and meanwhile, proper wetting and oil adding are carried out during material mixing to reduce the surface friction factor of the fibers; for the cotton grabbing process, according to the principle of fine cotton grabbing, the small grasping of the cotton grabbing amount of each tooth of a cotton grabbing beater blade of the disc cotton grabbing machine is ensured; for the mixed opening process, firstly, viscose staple fibers grabbed by a cotton grabbing machine are horizontally and horizontally tiled in layers and then longitudinally tiled in layers, then, the viscose staple fibers are grabbed vertically in the longitudinal direction of the viscose staple fiber layer through a first corner nail curtain, the viscose staple fibers grabbed horizontally in the transverse direction of the viscose staple fiber layer through a second corner nail curtain to realize the mixing of various selected viscose staple fibers, meanwhile, the opening action of the viscose staple fibers is realized in the grabbing process, the viscose staple fibers grabbed by the first corner nail curtain and the second corner nail curtain are then recombined, so that the mixing of the viscose staple fibers is realized again, the mixed viscose staple fibers are then peeled by a cotton roller, the peeled viscose staple fibers are driven by the rotation of the cotton roller to realize the separation and removal of impurities through the cutting action of a dust rod on the surface of the cotton roller, in the opening process of porcupines, a porcupines opening beater is arranged in the manner, a dust rod is arranged at the lower part of the outer circumference of the porcupines opening beater, the viscose staple fibers obtained by two-time opening effect are conveyed into a carding machine in the form of viscose staple fiber clusters after passing through a uniform effect of a cotton supply box, the viscose staple fibers are conveyed into the carding machine in the carding process by adopting the technological principle of high speed, tight spacing and strong carding, the carding process comprises three rotating parts, namely a licker-in, a cylinder and a doffer, wherein the licker-in, the cylinder and the doffer are arranged from back to front along the advancing direction of fibers, the rotating speeds of the licker-in, the cylinder and the doffer are sequentially reduced, the directions of the licker-in and the cylinder are opposite, the directions of the cylinder and the doffer are opposite, so that the viscose staple fibers entering the carding machine are sequentially transferred from the licker-in to the cylinder and from the cylinder to the doffer, the effect of puncturing and opening the pins of the viscose staple fibers is realized in the transferring process, and the upper part of the cylinder is provided with a rotating direction opposite to that of the cylinder, The rotating cover plate has a rotating speed lower than that of the cylinder, so that the carding effect on the viscose staple fibers is realized under the relative rotation of the cylinder and the cover plate;
the third step: and (3) uniform drawing: adopts the process principles of proper gauge, stable holding, strong control, uniform drafting, smooth drafting, multiple combination, heavy pressurization, light quantification, large gauge, low speed and anti-winding, adopts large drafting force in the drafting process, adopts the principles of heavy pressurization, large gauge, smooth passage and anti-winding and anti-blocking in the process, the method comprises two drawing processes, wherein a drawing frame is selected in the first drawing, 8 viscose cotton carding strips prepared in the second step are jointly fed, a drawing system adopts a drawing multiple larger than 8, the fed 8 viscose cotton carding strips are drawn and attenuated by the drawing system of the drawing frame and then recombined to prepare viscose semi-finished strips, 8 viscose semi-finished strips are jointly fed in the second drawing, the drawing system adopts a drawing multiple larger than 8 and larger than that of the first drawing, and the fed 8 viscose semi-finished strips are drawn and attenuated by the drawing system of the drawing frame and then recombined to prepare viscose semi-finished strips;
the fourth step: roving: the method comprises the following steps of (1) selecting a roving frame, wherein a four-roller three-zone drafting structure is adopted for a drafting system of the roving frame, the four rollers sequentially comprise a front roller, a middle rear roller and a rear roller from front to back, a finishing zone is arranged between the front roller and the middle front roller, the holding distance is larger than the quality length of fibers, 40mm is selected as the holding distance, a main drafting zone is arranged between the middle front roller and the middle rear roller, the holding distance is equal to the length of a rubber ring frame plus the length of a free zone, 61mm is selected as the holding distance, simple roller drafting is arranged between the middle rear roller and the rear roller, and 58mm is selected as the holding distance; when in use, two viscose drawn slivers prepared in the third step are pressed and fed into a drafting system by a back roller, the two viscose drawn slivers are fed together in an up-down superposed structure, a first polyester filament bundle is positioned in the middle of the two viscose drawn slivers and enters the drafting system together with the two viscose drawn slivers through the back roller, the drafting multiple of a back drafting area is set to be 2 times that of the case that one viscose drawn sliver is fed for spinning, under the drafting action of the back drafting area, viscose staple fibers in a bent state in the fed viscose drawn slivers are stretched and straightened, and if the viscose staple fibers in a stretched state are continuously subjected to the drafting action after being stretched and straightened, the mutual sliding action is generated, so that the viscose drawn slivers are stretched and thinned to obtain viscose strands, and simultaneously the first polyester filament bundle is broken into first polyester staple fibers with certain length distribution under the drafting action, and because the rebound action distribution of the first polyester staple fibers after the stretch breaking enables the first polyester staple fibers obtained after the stretch breaking to be randomly distributed in the stretched and thinned viscose fiber strands, then a first viscose/polyester fiber strand is obtained, then the first viscose/polyester fiber strand enters a main stretching area through the pressing of a middle and back roller, meanwhile, a second polyester filament bundle is positioned in the middle of the first viscose/polyester fiber strand and is pressed into the main stretching area of a stretching system together with the first viscose/polyester fiber strand through the middle and back roller, under the stretching action of the main stretching area, the viscose staple fibers and the first polyester staple fibers in the bent state in the fed first viscose/polyester fiber strand are stretched and straightened, and if the viscose staple fibers and the first polyester staple fibers are stretched and straightened, the viscose staple fibers and the first polyester staple fibers in the straightened state are further subjected to the stretching action, the mutual sliding action occurs, so that the first viscose/polyester fiber strand is stretched and thinned, the second polyester filament bundle is stretch-broken into second polyester staple fibers with certain length distribution under the action of drafting, the second polyester staple fibers obtained after stretch-breaking are randomly distributed in the first viscose/polyester fiber strand after stretch-breaking due to the distribution of the resilience of the second polyester staple fibers after stretch-breaking, meanwhile, the long staple fibers in the first polyester staple fibers or the filaments which are not stretch-broken in the back drafting zone are continuously stretch-broken, and the second polyester staple fibers are randomly distributed in the first viscose/polyester fiber strand after stretch-breaking under the distribution of the resilience after stretch-breaking, so that second viscose/polyester fiber strands are obtained, then the second viscose/polyester fiber strands enter the finishing zone through the pressing of the middle and front rollers, and the viscose staple fibers in a bending state, fed into the second viscose staple fibers in the second viscose/polyester fiber strand under the action of the finishing zone, The first polyester staple fiber and the second polyester staple fiber are stretched and straightened and then are continuously subjected to the drafting action to generate mutual sliding action, the viscose staple fiber, the first polyester staple fiber and the second polyester staple fiber which are in a straightened state are stretched to generate mutual sliding action, so that the second viscose/polyester fiber strip is stretched and thinned to obtain a third viscose/polyester fiber strip, the third viscose/polyester fiber strip is output from a drafting system by pressing of a front roller, meanwhile, a third polyester filament bundle is positioned in the middle of the third viscose/polyester fiber strip and is output from the drafting system together with the third viscose/polyester fiber strip by pressing of the front roller, and then the viscose staple fiber, the first polyester staple fiber and the second polyester staple fiber in the third viscose/polyester fiber strip are transferred under the action of twisting twist degree to enable the fibers to be mutually intertwined to prepare viscose/polyester mixed roving with certain strength, the third polyester filament bundle is wrapped at the center in the twisting process, so that the coated roving which is the viscose/polyester blended roving and the core yarn which is the core-spun roving of the third polyester filament bundle are prepared, and in the twisting process, the viscose staple fibers, the first polyester staple fibers and the second polyester staple fibers in the third viscose/polyester fiber strip are transferred to realize the mixing effect among the viscose staple fibers, the first polyester staple fibers and the second polyester staple fibers;
the fifth step: spinning: the method adopts the process principle of large gauge, medium twist, heavy pressurization, medium-elasticity medium-hard rubber covered rollers, medium speed, small back zone drafting, small jaw opening and proper temperature and humidity, selects a ring spinning frame, adopts a three-roller double-zone drafting structure for a drafting system of the spinning frame, and sequentially comprises a front roller, a middle roller and a back roller from front to back; when the drawing system is used, the core-spun roving prepared in the fourth step is fed into the drawing system through the pressing of the rear roller, under the drawing action of the drawing system, the viscose staple fibers, the first polyester staple fibers and the second polyester staple fibers in the bent state in the fed core-spun roving are stretched and straightened, and if the core-spun roving is stretched and straightened, the viscose staple fibers, the first polyester staple fibers and the second polyester staple fibers are stretched to generate mutual sliding action, so that the viscose/polyester mixed roving in the core-spun roving is stretched and thinned to obtain viscose/polyester mixed slivers, meanwhile, the third polyester filament bundles in the core-spun roving are stretch-broken into third polyester staple fibers with certain length distribution under the drawing action, and the third polyester staple fibers obtained after the stretching and thinning are randomly distributed on the viscose staple fibers after the stretching and thinning due to the rebound action distribution of the third polyester staple fibers after the stretching and thinning In the polyester mixed fiber strip, the first polyester staple fiber and the second polyester staple fiber in the viscose/polyester mixed roving are continuously pulled apart, and the elastic action distribution after the stretch breaking is randomly distributed in the sticky/polyester mixed fiber strips after the stretching thinning, so as to obtain the finally required sticky/polyester composite fiber strips, the sticky/polyester composite fiber strips are pressed by a front roller and output to a drafting system, then transferring the viscose staple fibers, the first polyester staple fibers, the second polyester staple fibers and the third polyester staple fibers in the viscose/polyester composite fiber strips under the action of twisting twist to enable the fibers to be mutually intertwined so as to prepare a composite blended yarn with certain strength, and in the twisting process, the viscose staple fibers, the first polyester staple fibers, the second polyester staple fibers and the third polyester staple fibers in the viscose/polyester composite fiber strips are transferred to realize the mixing effect among the viscose staple fibers, the first polyester staple fibers, the second polyester staple fibers and the third polyester staple fibers.
2. The method of producing a composite yarn blend of claim 1 wherein the size of the selected viscose staple fiber in the first step is 1.3dtex by 38 mm.
3. The method of producing a composite yarn blend of claim 1 wherein in the second step, the disc picker is of the type FA 002.
4. The method of producing a composite blended yarn of claim 1 wherein, in the second step, the blend opener is selected from the group consisting of types a-035F.
5. The method of producing the composite yarn blend of claim 1 wherein in the second step, the porcupine opener is FA106D type.
6. The method of producing a composite blended yarn of claim 1 wherein in the second step the automatic supply hopper is of the FA178 type.
7. The method of producing composite yarn blend of claim 1 wherein in the second step, the card is of the FA231C type.
8. The method of producing a composite yarn blend of claim 1 wherein in the third step, the draw frame selected is FA 320A.
9. The method of producing a composite blended yarn of claim 1 wherein in the fourth step, the roving frame selected is of the THFA4423 type.
10. The method of producing a composite blended yarn of claim 1 wherein the ring spinning frame selected in the fifth step is of the FA503 type.
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