CN103060979A - Single-spinneret-plate binary skin-core-type composite-spinning multiple-different-yarn production process - Google Patents
Single-spinneret-plate binary skin-core-type composite-spinning multiple-different-yarn production process Download PDFInfo
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Abstract
The invention relates to a single-spinneret-plate binary skin-core-type composite-spinning multiple-different-yarn production process. According to the production process, a composite spinning device including two secondary box bodies and one primary box body is used. Two different components, namely semi-dull (SD) slices and cationic slices (CD), undergo drying treatment, melting and metering treatment by means of respective drying equipment, screw rod extruders and the secondary box bodies, and then enter the primary box body to undergo spinning finish by means of a composite spinneret assembly to obtain combined medium oriented yarns (MOY), and then the combined MOY undergoes winding finish and elasticity finish to obtain finished products. Due to adoption of the technical scheme, fabrics which are novel in feel (wool feeling as an most obvious feeling, fluffy, full, flexible, crease resistant, good in elasticity, strong in three-dimensional performance, firm and the like), good in thermal-wet comfort, easy to maintain and good in performance can be manufactured.
Description
Technical field
The present invention relates to the spinning fibre technical field, particularly relate to the how different yarn production technology of plate binary core-skin type Compound spinning.
Background technology
Along with economic development, the change of social consciousness and life style, people propose more, higher requirement to functionalization and the comfortableness of textile and clothing.Begun by the till now ultranatural fibroid conversion of energy of imitated natural fabric speciality.In order to satisfy these demands, the production that fiber is carried out various physics, chemical modification and function textile has become the focus of research.
Yet no matter natural fabric or chemical fibre also do not have a kind of absolute desirable fiber to occur at present, and any fiber is excellent, shortcoming and depositing all.Combined yarn occurs for head it off just, and on the one hand, its application can obtain optimum and yarn best performance for special-purpose; On the other hand, also overcome the drawback that fiber product in the past too evenly causes, for simulate wool, the exploitation of imitative silk class artificial product provide the basis and guarantee.Combined yarn has better toughness than common some fiber, the iso-fineness between compound precursor, different shrinkage character and soda acid amount process can make fabric face soft, fluffy, obtain preferably wool-like effect.
The birth of chemical fibre simulate wool technology has not only solved wool fibre shortage of resources, the difficulty such as expensive, has remedied woolen deficiency, and has opened up more wide field for the application of synthetic fiber.General long filament simulate wool mainly is to use various deformation methods long filament is carried out deformation processing, makes long filament produce more yarn circle and curling on the surface, and bulkiness is strengthened; Or the yarn of using the different contraction of different cross section iso-fineness carries out the exploitation of imitation wool product.Deformation processing method has false twist texturing processing, air-texturing processing, hot-fluid (nozzle) deformation processing and the processing of the combination multi-texturing between them.The yarn that they process respectively has its style characteristic, but all need to produce at specific board, it is a larger input that general enterprise is bought this class machinery, how to make the production process of simulate wool yarn break through the problem with researching value that has been constrained to of downstream equipment.
Therefore, many domestic and international manufacturers begin to be conceived to produce long filament simulate wool raw material from the improvement of spining technology.Representative is the Development and Production of profiled filament.Profiled filament can improve the gloss of yarn, the wax-like feel of common long filament and aurora effect have been eliminated, because the strength and elongation aspect obtains suitable reduction, so that yarn has good pilling resistance, fiber has the longitudinal groove structure simultaneously, be conducive to improve the wicking of yarn, sucting wet air permeability is good, and the comfortableness of product is improved.But use separately bulkiness not enough.One road yarn feeding device is directly installed additional at original bullet equipment that adds in some enterprise, make two kinds of yarns with different shrinkage factors resultant yarn that is incorporated into the power networks, after the fabric heat treatment process, yarn inside has been arrived in the fibre migration that shrinkage factor is large becomes heart yarn, the fiber that shrinkage factor is little then is the wavy coating of flexing on the yarn top layer, has so also reached the purpose of simulate wool.But the wool-like fabric feel still is weak.
In view of this, the inventor is in conjunction with being engaged in spinning fibre area research work experience for many years, and the defective of above-mentioned technical field is studied for a long period of time, and this case produces thus.
Summary of the invention
The object of the present invention is to provide with the how different yarn production technology of plate binary core-skin type Compound spinning, to overcome existing technological deficiency.
To achieve these goals, technical scheme of the present invention is as follows:
With the how different yarn production technology of plate binary core-skin type Compound spinning, employing comprises the composite spinning equipment of two auxiliary box bodies and a main box, two kinds of different components, SD semi-dulling chips and the section of CD CATION, after carrying out respectively drying, melting and metering and process through separately drying equipment, screw extruder and auxiliary box body, enter again main box and carry out the spinning processing by composite spinneret pack, obtain mixed fine MOY silk; Then to this mixed fine MOY silk, after comprising coiling and adding the processing of bullet, obtain finished product.
Wherein, in dry the processing, the pre-crystallized temperature of SD is that 175 ℃, baking temperature are that 165 ℃, drying time are that 4-6 hour, dry air dew point are-70 ℃; The pre-crystallized temperature of CD is that 145 ℃, baking temperature are that 150 ℃, drying time are that 5-7 hour, dry air dew point are-70 ℃; Behind the chip drying, the moisture content of SD semi-dulling chips≤0.002%, the moisture content of CD CATION section≤0.003%.
Wherein, in the melt process, screw extruder adopts the mode of multistage partition heating, and front end is with the low temperature mixing refining head, SD screw rod five district's temperature are respectively 280 ℃/283 ℃/285 ℃/288 ℃/290 ℃, and CD screw rod five district's temperature are respectively 270 ℃/275 ℃/280 ℃/285 ℃/288 ℃.
Wherein, during the metering spinning is processed, an auxiliary box body is walked the SD component, the biphenyl Temperature Setting is 288 ℃, melt pipe by oneself enters composite spinneret pack, the distribution plate of making through high accuracy makes melt be distributed in the skin of assembly, another auxiliary box body is walked the CD component, 280 ℃ of biphenyl Temperature Settings, melt pipe by oneself enters composite spinneret pack, the distribution plate of making through high accuracy makes melt be distributed in the internal layer of assembly, thereby the SD fiber coats the CD component very equably when making two components go out spinnerets, forms the mixed fine MOY silk of uniform skin-core structure; Can design the hole count of different components on the same spinnerets.Wherein, the lateral blowing temperature is 23-25 ℃, and lateral blowing humidity is 70 ℃, and the lateral blowing wind speed is 0.55m/s, and oil applying rate is 0.5%;
Wherein, reel in the processing, spinning speed is controlled at 2300-2600m/min, and Winding Tension Controlling is in the 0.05-0.10cn/dtex scope.
Wherein, add in the bullet processing, the false twister speed ratio is 1.65, (setting temperature is according to the needs of product to adopt drawing by high temperature (draft temperature is 180-200 ℃), low temperature or normal temperature typing, be set in normal temperature---100 ℃) control technology, draw ratio is between 1.3-1.8, and draw speed is between 300-500m/min; Polyester filament adds the bullet deformation hot box and adopts the Biphenyl Ether heat form, and the temperature of the first hot case is 180-200 ℃, and the second heater temperature is normal temperature---and 100 ℃.
Further, described adding in the bullet processing, intelligent pneumatic power Position servo control technology is joined in the common false twist texturing technology.
Further, described intelligent pneumatic power Position servo control technology is joined in the common false twist texturing technology, refer at FR
0(i.e. zero roller) and FR
1Install blow silk device additional between (i.e. a roller), comprise cylinder, straight-bar and hit screw mandrel, be fixedly connected with straight-bar on the piston of cylinder, hit screw mandrel with perpendicular being fixed with of straight-bar axis on the straight-bar; Cylinder is controlled by pneumatic position servo system, makes the straight-bar that is fixed on the cylinder piston do the piston motion with the piston of cylinder, and drives and hit the screw mandrel side-to-side movement, hits screw mandrel and is subjected to promote to beat mixed fine MOY silk.Like this, by the application of pneumatic servo positioning control system, so that the rhythm frequency of cylinder piston motion, time length, traverse length etc. can both be accomplished is controlled, thereby can produce the product of different-style.
Further, the described silk device that hits can be according to the processing needs at FR
0(i.e. zero roller) and FR
1Install additional one or multi-channel between (i.e. a roller); Wherein hit the quantity of screw mandrel, corresponding with mixed fine MOY silk on the machine.
Further, add during bullet processes, adopt following special silk road: mixed fine MOY silk → FR0 → thread guide → hit silk device one → thread guide → thread guide → the hit hot case → coldplate of silk device two → thread guide → FR1 → first → hot case of false twister → second roller → the nozzle of interlace → second → the 3rd roller → coiling → finished product.
Of the present invention focusing on, develop and a kind ofly have the mixed fiber yarn that two kinds of components have the different contraction of iso-fineness and fiber becomes stratiform to assemble after heat treatment the production of same filament spinning component, yarn is after heat treatment, the fiber of different material has different shrinkage factors, the fiber of different fineness also has different percent thermal shrinkages because of its orientation with the difference of degree of crystallinity, therefore fiber can distribute along the different order of yarn radial direction because of shrinkage factor, simultaneously by the special technology controlling and process of rear processing, thereby make yarn not only have the due bulking intensity of simulate wool, and the dyestuff dye-uptake of different material caused the heterochromatic effect of yarn, more strengthened the wool-like effect of yarn.Research and development by this project, can be with the different raw material of conversion, different spin pack design, produce the different cultivars of series, than additive method, direct then more economical and convenient and better effects if of the mixed fine different contractile filaments of spinning, the development and exploration that can be the simulate wool long filament hews out another path.
In use we find, there is following beneficial effect in the technical program: first, adopt the technical program, can make and have the feel novelty (feel of wool be main, fluffy, plentiful, active, crease-resistant, excellent spring, well-pressed, body bone etc. arranged), the wet fabric of the premium properties such as comfortableness is good, easy maintenance of heat; The second, adopt the technical program, the how different yarn of made Compound spinning has the characteristic of iso-fineness between precursor, and it is gentle and mashed that this characteristic can make fabric obtain, and softness is well-pressed effect again; The 3rd, adopt the technical program, the how different yarn of made Compound spinning has the characteristic of different contraction, and this characteristic can make fabric that preferably bulkiness is arranged; The 4th, adopt the technical program, the how different yarn of made Compound spinning has interfibrous multilayered structure, this characteristic can make fabric face that concave-convex sense is arranged, and obtains the feel of lint, and has good elasticity, after being subject to the external force impression, under Action of Gravity Field, can produce creep, impression is disappeared, be difficult for producing fold.
Technical scheme of the present invention the present invention is described in further detail below in conjunction with drawings and Examples in order further to explain.
Description of drawings
Fig. 1 is the how different yarn production technological process of Compound spinning, and accompanying drawing number is as follows: chip bunker 1, slicer drying tower 2, screw extruder 3, auxiliary box body 4, main box 5, upper draw-off godet 6, lower draw-off godet 7, winding bobbin 8, friction roller 9, spinning shaft 11;
Fig. 2 is composite spinneret pack profile and sectional view, and accompanying drawing number is as follows: distribution plate 1, distribution plate 2 and spinnerets.
Fig. 3 is for hitting silk device figure, and accompanying drawing number is as follows: cylinder 1, piston 11, straight-bar 2, the frame 6 of hitting screw mandrel 3, mixed fine MOY silk 4, sleeve pipe 5, elasticizer.
Fig. 4 uses schematic diagram for hitting silk device, and accompanying drawing number is as follows: FR
0(namely zero roller) 1, hit silk device 2, hit silk device 3, hit screw mandrel 33, FR
1(i.e. a roller) 4, mixed fine MOY silk 40, thread guide 50;
Fig. 5 is the how different yarn texturing craft of Compound spinning flow chart; FR
0(namely zero roller) 1, hit silk device 1, hit silk device 23, FR
1(i.e. a roller) 4, H
1(i.e. the first hot case) 5, C
P(being coldplate) 6, Nip(are false twister) 7, FR
2(i.e. the second roller) 8, Jet(are the nozzle of interlace) 9, H
2(i.e. the second hot case) 10, FR
3(i.e. the 3rd roller) 11, oil(are oil tanker) 12, WR(is Wound-up roller) 13, finished product 14.
The specific embodiment
Below in conjunction with accompanying drawing to enforcement further detailed description of the present invention.Extremely shown in Figure 5 such as Fig. 1, be the preferred embodiment of adopting production technology of the present invention.
(1) main experimental equipment and main raw material
Drying equipment: the production capacity of Beijing moral bark of official magnolia manufacturing is each one in 60kg/hr, 30kg/hr pilot scale drying equipment.
The screw machine press: Shanghai Jwell Chemical Fiber Machinery Co., Ltd makes two of JWM-45 type screw machine press, horizontal L/D=25.
Spinning equipment: one of 1 * 6 the composite spinning pilot plant that Shanghai Jwell Chemical Fiber Machinery Co., Ltd makes.
Winding apparatus: one of the 835 type automatic winding-machine that Shanghai Jwell Chemical Fiber Machinery Co., Ltd makes.
Add bullet equipment: one of Japanese Murata 33H type elasticizer.
One of the FK6-900 of Hongyuan Fly-Frame Co., Ltd., Jiangsu type elasticizer.
CATION section: the CATION section that Zhejiang Chemical-Fiber United Group Co., Ltd. produces; Inherent viscosity [h]=0.56dL/g, fusing point: 250 ℃, end carboxyl≤35mol/t, w (TiO
2)≤0.4%.
Semi-dulling chips: the semi-dulling chips that Zhejiang Chemical-Fiber United Group Co., Ltd. produces; Intrinsic viscosity [h]=0.65 dL/g, fusing point: 260 ℃, end carboxyl≤27 mol/t, w (TiO
2)≤0.4%.
(2) technological process of production
The present invention adopts at present in the world advanced person's composite spinning equipment, by high-precision spinneret design and unique technological process, has the mixed fiber yarn that two kinds of components have the different contraction of iso-fineness and fiber becomes stratiform to assemble after heat treatment the production of same filament spinning component.Technological process as shown in Figure 1, abridged table is as follows:
SD semi-dulling chips → drying → melting → metering → Fu Xiang Ti ↘
CD CATION section → drying → melting → metering → Fu Xiang Ti ↗ main box → multiple
Close spinning pack → spinning → coiling → balance → POY compound silk → add bullet → finished product
Be specially, employing comprises the composite spinning equipment of two auxiliary box bodies and a main box, two kinds of different components, SD semi-dulling chips and the section of CD CATION, after carrying out respectively drying, melting and metering and process through separately drying equipment, screw extruder and auxiliary box body, enter again main box and carry out the spinning processing by composite spinneret pack, obtain mixed fine MOY silk; Then to this mixed fine MOY silk, after comprising coiling and adding the processing of bullet, obtain finished product.
In dry the processing, the pre-crystallized temperature of SD is that 175 ℃, baking temperature are that 165 ℃, drying time are that 4-6 hour, the dry air dew point of SD are-70 ℃; The pre-crystallized temperature of CD is that 145 ℃, baking temperature are that 150 ℃, drying time are that 5-7 hour, dry air dew point are-70 ℃; Behind the chip drying, the moisture content of SD semi-dulling chips≤0.002%, the moisture content of CATION section≤0.003%.
In the melt process, screw extruder adopts the mode of multistage partition heating, front end is with the low temperature mixing refining head, and SD screw rod five district's temperature are respectively 280 ℃/283 ℃/285 ℃/288 ℃/290 ℃, and CD screw rod five district's temperature are respectively 270 ℃/275 ℃/280 ℃/285 ℃/288 ℃.
As shown in Figure 2, during the metering spinning is processed, an auxiliary box body is walked the SD component, the biphenyl Temperature Setting is 288 ℃, melt pipe by oneself enters composite spinneret pack, the distribution plate of making through high accuracy makes melt be distributed in the skin of assembly, another auxiliary box body is walked the CD component, 280 ℃ of biphenyl Temperature Settings, melt pipe by oneself enters composite spinneret pack, the distribution plate of making through high accuracy makes melt be distributed in the internal layer of assembly, thereby the SD fiber coats the CD component very equably when making two components go out spinnerets, forms the mixed fine MOY silk of uniform skin-core structure; Can design the hole count (how much can deciding according to arts demand of hole count) of different components on the same spinnerets.Wherein, the lateral blowing temperature is 23-25 ℃, and lateral blowing humidity is 70 ℃, and the lateral blowing wind speed is 0.55m/s, and oil applying rate is 0.5%;
Reel in the processing, spinning speed is controlled at 2300-2600m/min, and Winding Tension Controlling is in the 0.05-0.10cn/dtex scope.
Add in the bullet processing, the false twister speed ratio is 1.65, (setting temperature is according to the needs of product to adopt drawing by high temperature (draft temperature is 180-200 ℃), low temperature or normal temperature typing, be set in normal temperature---100 ℃) control technology, draw ratio is between 1.3-1.8, and draw speed is between 300-500m/min; Polyester filament adds the bullet deformation hot box and adopts the Biphenyl Ether heat form, and the temperature of the first hot case is 180-200 ℃, and the second heater temperature is normal temperature---and 100 ℃.
Described adding in the bullet processing, intelligent pneumatic power Position servo control technology is joined in the common false twist texturing technology.
As shown in Figure 3, intelligent pneumatic power Position servo control technology joins in the common false twist texturing technology, refers at FR
0(i.e. zero roller) and FR
1Install blow silk device additional between (i.e. a roller), comprise cylinder, straight-bar and hit screw mandrel, be fixedly connected with straight-bar 2 on the piston 11 of cylinder 1, hit screw mandrel 3 with perpendicular being fixed with of straight-bar 2 axis on the straight-bar; Cylinder 1 makes the straight-bar 2 that is fixed on cylinder 1 piston do the piston motion with the piston of cylinder 1 by pneumatic position servo system control, and drives and hit screw mandrel 3 side-to-side movements, hits screw mandrel and is subjected to promote to beat mixed fine MOY silk 4.Specifically, advanced between the adjacent strike bar during mixed fine MOY silk operation, moved to left when hitting on the strand when hitting screw mandrel, and made strand be subject to the effect of a cross force, and be equivalent to strand is stretched.Thereby the application by the pneumatic servo positioning control system so that the rhythm frequency of cylinder piston motion, time length, traverse length etc. can both be accomplished is controlled, thereby can be produced the product of different-style.In the present embodiment, when hitting the silk device use, be that cylinder is fixed on the frame of elasticizer, mixed fine MOY silk places between the adjacent strike bar because straight-bar is longer, for straight-bar indeformable in reciprocating motion, can be on frame 6 fixed sleeving 5, allow straight-bar 2 sleeves in sleeve pipe 5.
As shown in Figure 4, the described silk device that hits can be according to the processing needs at FR
0(i.e. zero roller) and FR
1Install additional one or multi-channel between (i.e. a roller); Wherein hit the quantity of screw mandrel, corresponding with mixed fine MOY silk on the machine.Must hit with regard to every rhizoid because hit silk device, that is to say how many rhizoids machine has just to add how many bars and hit screw mandrel.
As shown in Figure 5, add during bullet processes, adopt following special silk road: mixed fine MOY silk → FR0 → thread guide → hit silk device one → thread guide → thread guide → the hit hot case → coldplate of silk device two → thread guide → FR1 → first → hot case of false twister → second roller → the nozzle of interlace → second → the 3rd roller → coiling → finished product.
(3) concrete production technology (taking specification as example as 240dtex/68f)
1, spinning pack design
This problem is on the basis of original composite spinneret pack, inner five distribution plates are re-started design and produce, designing requirement according to product, the hole count of different components is designed to respectively 42f, 26f on the same spinnerets, in order to obtain optimum efficiency, we please domestic best assembly manufacturer---CHangZhou FangXing precise Mechanic Co., Ltd have designed and produced the mixed fine assembly of the present invention, as shown in Figure 2:
As seen from the figure, same spinneret component has the spinning composition of two kinds of heterogeneities, is the definition with the plate binary.Be that take specification as 240dtex/68f example, same spinneret component have respectively 168dtex/42f CATION and two kinds of different components of 148dtex/26f half delustring.
2, process conditions (seeing the following form)
3, main technique Discussion on Technology
(1) chip drying
1. chipping qualities requirement
Chip drying is the important step in the spinning, and the quality of its dry mass directly affects the spinnability of fiber and the physical property of product.The section moisture content is high, and moisture is easily vaporized in spinning process, forms " cavity filament ", causes lousiness and broken end, and curling round the roll is serious, and the intensity of finished silk is descended.When adopting the CATION slice spinning, section produces the tremie pipe clogging because the difference of internal structure is easily softened, thereby sticked together with other section under the higher temperature drying condition.Two kinds of different materials of product are spinning under identical assembly temperature, and the thermally sensitive component of raw material easily produces degraded, or its rheological characteristic large variation occurs and is unfavorable for spinning technique.
2. chip drying flow process and technological parameter
Chip bunker → pre-crystallized → dry → dried section → dried chip bunker is carried → is wet in the wet bag → screening → deironing → pulse of cutting into slices → open
Yarn take specification as 240dtex/68f is example, and SD represents half delustring, and CD represents CATION.In the dry run, the pre-crystallized temperature of SD is about 175 ℃, and the pre-crystallized temperature of CD is about 145 ℃; The baking temperature of SD is about 165 ℃, and the baking temperature of CD is about 150 ℃; Be about 4-6h the drying time of SD, be about 5-7h the drying time of CD; The dry air dew point of SD is about-70 ℃, and the dry air dew point of CD is about-70 ℃.
(2) spinning
1. spinning temperature
Being changed significantly of spinning temperature affects the surface tension of spinning solution and viscoelastic property, and the rising of melt relaxation time with temperature descends, and makes the expansion phenomenon minimizing after melt goes out spinneret orifice, and the surface tension of melt also reduces with temperature in addition.With the rising of temperature, melt viscosity descends gradually, has reduced to extrude the resistance that departs from shape of spinneret, can cause fibre forming too fierce but improve spinning temperature, and crackle or groove are easily caused in the fibre section, the brute force of impact silk.Screw extruder adopts the mode of multistage partition heating, and front end is with the low temperature mixing refining head, with the melt uniformity of guaranteeing to extrude.For improving the flexibility of production line, sub-screw extruder sleeve design adopts the bimetallic spraying technology, to adapt to the requirement of production flexibility.When using the CATION section, for the melting mixing of cutting into slices evenly, the reduction melt suitably improves the melt temperature of screw rod in the impact of pipeline middle level flow phenomenon in flowing.With, specification is that the yarn of 240dtex/68f is example, and SD represents half delustring, and CD represents CATION.In the spinning process, screw rod I district temperature, SD is about 280 ℃, and CD is about 278 ℃; Screw rod II district temperature, SD is about 283 ℃, and CD is about 280 ℃; Screw rod III district temperature, SD is about 285 ℃, and CD is about 283 ℃; Screw rod IV district temperature, SD is about 288 ℃, and CD is about 285 ℃; Screw rod V district temperature, SD is about 290 ℃, and CD is about 288 ℃; SD component biphenyl temperature is about 288 ℃, and CD component biphenyl temperature is about 280 ℃.
2. lateral blowing
Fibre bundle radially is thickness and distributes, and the cooling of lateral blowing can make the performance of how different silk produce larger difference, is conducive to the embodiment of effect, and the cooling condition of therefore suitable reinforcing fibre makes the degree of crystallinity of ectonexine fiber produce larger difference.In addition, lateral blowing filtering material (nonwoven fabric) will in time clean, and shortens the replacement cycle, with the yarn unevenness of effective reduction POY precursor.In cooling procedure, the temperature of lateral blowing and speed are very large to shaping and the performance impact of fiber, when the lateral blowing temperature is too low, strong coldly cause easily on the whole spinning threadling that outer orientation is high and sandwich layer is low, make degree of molecular orientation and the degree of crystallinity orientation of various piece on the cross section variant, thereby affect fibre strength, easily cause the side that twine is arranged during winding shaping.When the lateral blowing temperature is too high, easily cause the variation of fiber degree of profile, and institute's elongate fiber that spins is larger, there is staple the side during winding shaping.Along with the increase of airflow velocity, the molecularly oriented of fiber and crystalline orientation increase, thereby cause extension at break to descend, and intensity makes moderate progress.As long as, improve cooling velocity and can not produce large impact to spinnability only under the cold condition in the spinning head district.Yarn take specification as 240dtex/68f is example, and in the spinning process, the lateral blowing temperature is about 25 ℃, and lateral blowing humidity is about 70 ℃, and the lateral blowing wind speed is about 0.55m/s.
3. component process
Suitable component pressure can make melt mix more uniformly in assembly, is conducive to the even of fiber quality.Melt passes through in filter medium, shear action will make melt temperature that certain rising is arranged, therefore, cause for a long time larger degraded for avoiding raw material in the pipeline of higher temperature, to stop, can adopt lower spin manifold temperature, and adopt higher filter pressure, required temperature when making melt reach spinning.
4. oil
At hot stretching phase, because macromolecule thermodynamic state different (glass transition temperature is different) wants to make each root fiber percent thermal shrinkage different, same multifilament bundled coating is oiled inhomogeneous, the part fiber is oiled, the part fiber seldom oils or does not oil.Yarn take specification as 240dtex/68f is example, and in the spinning process, oil applying rate is 0.5%.
(3)
Reel
1. winding speed
Constant winding speed is to form the necessary condition of evenly reeling.The initial stage excessive velocities, silk cylinder diameter increases, and speed of gyration descends, to reach constant linear velocity.If excessive velocities forms air ring larger, easily mutually collide the appearance broken end of entwining, can take to reduce winding speed and compensate.Through test, spinning speed is controlled at 2500-2800m/min and can meets the demands.Yarn take specification as 240dtex/68f is example, and in the spinning process, the yarn winding speed is about 2600m/min.
2. winding tension
Winding tension is large, and the phase embedding occurs between the silk layer, is difficult for during unwinding withdrawing from and broken end occurs.Winding tension is too small, and knocking over occurs when unwinding and break end, even the limit of collapsing.Generally speaking, tension force control should be more bigger, to reduce the generation of knocking over.The coiling key of spinning how different silk is spinning tension, and we control the tension force of fiber by installing draw-off godet additional with the speed difference of draw-off godet and take up roll, and through test of many times, Winding Tension Controlling is comparatively desirable in the 0.05-0.10cn/dtex scope.
(4) add bullet
For the style of more perfect embodiment product, in texturing craft research, adopted unconventional texturing craft technology.
1. control program:
We design and have adopted intelligent air-flow Position servo control technology to join in the common false twist texturing technology, both have realized being different from fully the control of conventional texturing craft in conjunction with utilization, its key problem in technology is the length of the commutator pulse time in the air-flow SERVO CONTROL, size control and the control of the distance of positions, the control of silk road tension force and the relation of false-twisted texturing process and multidimensional structure Wool-Like fiber style etc. of cylinder pressure.In specific implementation process, we will by the principal element of the following several respects of comprehensive study, comprise for this reason: (A) effective use of frequency-variable closed control technology, variable program control technology, Intelligent servo positioning control technology; (B) control software is set up the relational model of properties of product and each principal element on the impact of product quality and performances and operability etc., by continuous feedback, optimizes each main artis, realizes the perfection embodiment of properties of product.Yarn take specification as 240dtex/68f is example, and the false twister speed ratio is 1.65.
2. the silk road:
This problem product adopts modified feedstock, uses the technology control feedings such as frequency-variable closed control, variable program control, Intelligent servo positioning control, thus the product of the different-style of producing.Therefore, rational silk road not only affects the operability of production but also affects the style of product, and by a large amount of tests, we adopt the silk road of special texturing craft flow chart shown in Figure 2, thereby have obtained satisfied effect.
3. temperature control:
The temperature control of this problem depends primarily on the selection of raw material, because we adopt the special material of low crystallization high orientation, so can not adopt common process temperature control, simultaneously in order to obtain excellent product style, adopt the typing of drawing by high temperature low temperature or normal temperature control technology.
4. draw ratio:
Because this problem product embodies vertically different macromolecular structure, thereby presents the different hygroscopic effect of multistage in macroscopic view, so the residual stretch multiple of product is larger than conventional products, is controlled between the 38%--70% according to different styles.Therefore in specific implementation process, will adjust according to the style of product the time.Experimental results show that general draw ratio between 1.3-1.8, can meet the demands, and keep good operability.Yarn take specification as 240dtex/68f is example, and the draw ratio of yarn is about 1.55.
5. draw speed:
In this problem process of producing product, draw speed is a very important parameter, and speed is too fast, because vertically there is high orientation fragment in fiber, easily produces the phenomenons such as lousiness, the situation that can cause broken end and can not normally produce when serious; In addition, owing to adopting the different wires feed rate of multistage speed of prediction program control, well embody for making its effect, the speed of a motor vehicle is low, otherwise broken end is many, the running difficulty.But speed is too low, affects prouctiveness, and production cost is high.Therefore, under the prerequisite that guarantees product quality, draw speed is high as much as possible.For this reason, through repetition test, finally selected draw speed can obtain good result between 300-500m/min, has guaranteed the quality of product.Yarn take specification as 240dtex/68f is example, and the silk speed of yarn is about 400m/min.
6. heating-up temperature:
Polyester filament adds the bullet deformation hot box and adopts the Biphenyl Ether heat form.In the deforming process of utilizing the how different silk of MOY precursor processing, improve the first heater temperature, but the locomitivity of fortifying fibre macromolecular chain segment, and the crystal lattice sophistication of formation is improved, under the effect of tensile force, the segment of amorphous area part, the crystal grain of crystalline region part are easy to orientation, distortion, and bulkiness improves; But excess Temperature, the molecular thermalmotion aggravation is difficult for forming crystallization, and the disorientation tendency increases, and the degree of orientation reduces, and fibre strength reduces, and easily produces lousiness and stiff silk, and crimp property descends.The effect of the second hot case be to fiber the first hot case occur distortion finalize the design, its determines crimpness and the feel of fiber.In order to obtain preferably fiber of bulkiness, find that by test the second heater temperature is slightly low than conventional products, strand outward appearance bulkiness makes moderate progress.The too high meeting of temperature causes the fiber feel more thick and stiff.Simultaneously can strengthen the typing overfeeding, the bulkiness of fiber will be further improved.Yarn take specification as 240dtex/68f is example, and the temperature of the first hot case is 180 ℃, and the second heater temperature is 100 ℃.
Combined yarn is for the deficiency that solves natural fabric and some particular aspects of chemical fibre occurs, and for obtaining optimum and yarn best performance provides possibility, has also overcome some drawbacks in the past.As above-mentioned, have with the main raw material of the how different yarn of plate binary core-skin type Compound spinning: CATION section and semi-dulling chips.Select suitable dry humiture, spinning speed, cooling condition and component process, control winding speed and winding tension well, and the texturing craft technology, thereby can obtain following beneficial effect:.
Adopt composite spinning equipment, by the selection of raw material and the adjustment of process conditions, can develop the fiber of the how different characteristics such as the different cross section of different contraction iso-fineness, help to promote the class of fabric, make fabric have more more superior performances, catered to well consumer demand.
The all raw materials that use in the present invention etc. all are conventional uses except specified otherwise, can buy from market; Miscellaneous part in employed equipment or the special installation except specified otherwise, all is the conventional well-known components in conventional equipment or the particular device, can buy from market; Employed process, as do not do special instruction, all refer to the common process method, therefore repeat no more.In the present invention, refer in particular to as non-, all amount, percentages are unit of weight.
The above is specific embodiments of the invention only, is not the restriction to this case design, and all equivalent variations of doing according to the design key of this case all fall into the protection domain of this case.
Claims (5)
1. with the how different yarn production technology of plate binary core-skin type Compound spinning, it is characterized in that: adopt the composite spinning equipment that comprises two auxiliary box bodies and a main box, two kinds of different components, SD semi-dulling chips and the section of CD CATION, after carrying out respectively drying, melting and metering and process through separately drying equipment, screw extruder and auxiliary box body, enter again main box and carry out the spinning processing by composite spinneret pack, obtain mixed fine MOY silk; Then to this mixed fine MOY silk, after comprising coiling and adding the processing of bullet, obtain finished product;
Wherein, in dry the processing, the pre-crystallized temperature of SD is that 175 ℃, baking temperature are that 165 ℃, drying time are that 4-6 hour, dry air dew point are-70 ℃; The pre-crystallized temperature of CD is that 145 ℃, baking temperature are that 150 ℃, drying time are that 5-7 hour, dry air dew point are-70 ℃; Behind the chip drying, the moisture content of SD semi-dulling chips≤0.002%, the moisture content of CD CATION section≤0.003%;
Wherein, in the melt process, screw extruder adopts the mode of multistage partition heating, and front end is with the low temperature mixing refining head, SD screw rod five district's temperature are respectively 280 ℃/283 ℃/285 ℃/288 ℃/290 ℃, and CD screw rod five district's temperature are respectively 270 ℃/275 ℃/280 ℃/285 ℃/288 ℃;
Wherein, during the metering spinning is processed, an auxiliary box body is walked the SD component, the biphenyl Temperature Setting is 288 ℃, melt pipe by oneself enters composite spinneret pack, the distribution plate of making through high accuracy makes melt be distributed in the skin of assembly, another auxiliary box body is walked the CD component, 280 ℃ of biphenyl Temperature Settings, melt pipe by oneself enters composite spinneret pack, the distribution plate of making through high accuracy makes melt be distributed in the internal layer of assembly, thereby the SD fiber coats the CD component very equably when making two components go out spinnerets, forms the mixed fine MOY silk of uniform skin-core structure; Can design the hole count of different components on the same spinnerets;
Wherein, the lateral blowing temperature is 23-25 ℃, and lateral blowing humidity is 70 ℃, and the lateral blowing wind speed is 0.55m/s, and oil applying rate is 0.5%;
Wherein, reel in the processing, spinning speed is controlled at 2300-2600m/min, and Winding Tension Controlling is in the 0.05-0.10cn/dtex scope;
Wherein, add in the bullet processing, the false twister speed ratio is 1.65, (setting temperature is according to the needs of product to adopt drawing by high temperature (draft temperature is 180-200 ℃), low temperature or normal temperature typing, be set in normal temperature---100 ℃) control technology, draw ratio is between 1.3-1.8, and draw speed is between 300-500m/min; Polyester filament adds the bullet deformation hot box and adopts the Biphenyl Ether heat form, and the temperature of the first hot case is 180-200 ℃, and the second heater temperature is normal temperature---and 100 ℃.
2. as claimed in claim 1 with the how different yarn production technology of plate binary core-skin type Compound spinning, it is characterized in that: described adding in the bullet processing, intelligent pneumatic power Position servo control technology is joined in the common false twist texturing technology.
3. as claimed in claim 2 with the how different yarn production technology of plate binary core-skin type Compound spinning, it is characterized in that: described intelligent pneumatic power Position servo control technology is joined in the common false twist texturing technology, refer at FR
0(i.e. zero roller) and FR
1Install blow silk device additional between (i.e. a roller), comprise cylinder, straight-bar and hit screw mandrel, be fixedly connected with straight-bar on the piston of cylinder, hit screw mandrel with perpendicular being fixed with of straight-bar axis on the straight-bar; Cylinder is controlled by pneumatic position servo system, makes the straight-bar that is fixed on the cylinder piston do the piston motion with the piston of cylinder, and drives and hit the screw mandrel side-to-side movement, hits screw mandrel and is subjected to promote to beat mixed fine MOY silk.
4. as claimed in claim 3 with the how different yarn production technology of plate binary core-skin type Compound spinning, it is characterized in that: the described silk device that hits, can be according to the processing needs at FR
0(i.e. zero roller) and FR
1Install additional one or multi-channel between (i.e. a roller); Wherein hit the quantity of screw mandrel, corresponding with mixed fine MOY silk on the machine.
5. as claimed in claim 3 with the how different yarn production technology of plate binary core-skin type Compound spinning, it is characterized in that: described adding during bullet processes, adopt following special silk road: mixed fine MOY silk → FR0 → thread guide → hit silk device one → thread guide → thread guide → the hit hot case → coldplate of silk device two → thread guide → FR1 → first → hot case of false twister → second roller → the nozzle of interlace → second → the 3rd roller → coiling → finished product.
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| CN104452008A (en) * | 2013-09-23 | 2015-03-25 | 上海贵达科技有限公司 | Polyester composite elastic fiber |
| CN104452009A (en) * | 2013-09-23 | 2015-03-25 | 上海贵达科技有限公司 | Soft and stiff fiber |
| CN107513788A (en) * | 2016-06-16 | 2017-12-26 | 苏州力佳新型材料有限公司 | A kind of beautiful composite filament of fat or thin pleasure and its preparation technology |
| CN110616468A (en) * | 2019-10-25 | 2019-12-27 | 无锡金通高纤股份有限公司 | Preparation method of bicomponent monofilament compositely formed under spinning box |
| CN112921423A (en) * | 2021-01-22 | 2021-06-08 | 苏州金泉新材料股份有限公司 | Double-component fiber spinning assembly |
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