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CN1544720A - Three-leaves viscose, its making process and spinneret assembly thereof - Google Patents

Three-leaves viscose, its making process and spinneret assembly thereof Download PDF

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Publication number
CN1544720A
CN1544720A CNA2003101071345A CN200310107134A CN1544720A CN 1544720 A CN1544720 A CN 1544720A CN A2003101071345 A CNA2003101071345 A CN A2003101071345A CN 200310107134 A CN200310107134 A CN 200310107134A CN 1544720 A CN1544720 A CN 1544720A
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China
Prior art keywords
leaf
spinning
viscose
viscose filament
hole
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CNA2003101071345A
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CN1302161C (en
Inventor
佟维力
鹿红岩
田文智
许凤文
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Baoding Swan Fiber Co Ltd
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Baoding Swan Co Ltd
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Abstract

The invention is a three-leaf long viscoce silk, its preparing method and its spinneret components. The section of the viscoce silk shows three crossed bar branches and leaves, which are distributed in T or Y shape, length-width ratio of each leaf is 4-10 : 1. According to special-shaped long viscoce silk's special requirements and change raw of viscoce streamlet formed by ejection from orifices, the preparing method designs the corresponding technical conditions, cooperates with the reasonable size of orifices and pore canals to make the three-leaf spinning head produce 333.3dtex/18f long viscoce silk. The fabric made by spinning the viscoce silk has strong elastic feel, good permeability, strong sense of light, etc, namely an ideal raw material used in high-grade shell fabrics and knit ready-made clothes.

Description

A kind of three leaf viscose filament yarns, preparation method and spinneret assembly thereof
Technical field
The present invention relates to the preparation method of a kind of new textile raw material, this raw material and produce the used specific purpose tool of this raw material, belong to textile technology field.
Background technology
Viscose filament yarn is a kind of colory textile raw material, it have moisture absorption, ventilative, beautiful, dangle, antistatic, be easy to characteristics such as processing, be subjected to liking of consumers in general deeply.Its production technology is developed rapidly in recent years, and product quality has had significant progress.Along with the fierceness day by day of market competition and the raising of consumer demand, viscose filament yarn wants sustainable development, increase occupation rate of market just must break the situation of product unification, to seriation, differential, functionalization aspect development.The production process of viscose filament yarn is that cellulose is generated alkali cellulose through after the basification, generates sodium cellulose xanthate with the CS2 reaction again, makes viscose through dissolving, obtains viscose filament yarn through spinning again under the effect of acid bath.According to present technical merit, based on the common viscose filament yarn of production circular cross-section, and the exploitation of differential viscose filament yarn is slow, only reports the viscose filament yarn of developing the flat cross section and puts into production.In general, differential viscose filament yarn is meant cross section special-shapedization of silk, and this alienation can make viscose filament yarn show distinguished characteristic, is the fabric of raw material with it, all than routine bigger variation is arranged on gloss, feel and style.Exploitation viscose filament yarn differentiated product is for the use value that improves the viscose filament yarn fabric, improve added value of product, expand its Application Areas, enlarge occupation rate of market and all have positive promote significance.
Summary of the invention
The present invention is used to overcome the structural limitation of existing product and a kind of three leaf viscose filament yarn and preparation methods with imitative T shape or y-shaped cross-section is provided, and the spinneret assembly that can produce above-mentioned three leaf viscose filament yarns is provided.
The alleged problem of the present invention is solved by following technical scheme:
A kind of three leaf viscose filament yarns, its special feature is: the cross section of described viscose filament yarn presents three strip branches and leaves of bifurcated, the T-shaped or Y shape of branches and leaves distribution, the length-width ratio of every leaf is 4~10: 1.
The preparation method of above-mentioned three leaf viscose filament yarns, it carries out according to following operation:
A. soak, pressure, powder: after the pulp that will prepare viscose glue stoste floods, through squeezing, pulverize, make alkali cellulose in aqueous slkali; B. yellow: with alkali cellulose and CS 2Carry out the yellow reaction and obtain cellulose xanthate; C. the liposoluble of cellulose yellow acid is separated: adding dissolving alkali and water are made viscose glue in cellulose yellow acid fat; D.. viscose glue after filtration, maturation, deaeration form spinning glue; E. in acid bath, be spun into viscose filament yarn; After post processing, obtain the finished product viscose filament yarn again.It is characterized in that: affiliated spinning process adopts the spinning head of three leaf hole shapes, and the breadth length ratio of every leaf size is 1: 4~10;
The preparation method of above-mentioned three leaf viscose filament yarns, the technological parameter that adopts in the described spinning process is spinning speed: 71~76m/min; Spinning head stretching value: 50~90%.
The preparation method of above-mentioned three leaf viscose filament yarns, described spinning glue contains first fibre 7.7~8.5%, and NaOH 5.7~6.0%, and S 2.15~2.35%; Viscosity: 30~40 seconds; Degree of ripeness: 8.0~10.5ml.
The preparation method of above-mentioned three leaf viscose filament yarns, described spinning acid bath consists of, H 2SO 4: 128~142g/l; ZnSO 4: 10~13g/l; Na 2SO 4: 248~290g/l; Bathe temperature: 50~60 ℃.
A kind of three leaf hole spinneret assemblies that prepare above-mentioned viscose filament yarn, it is made up of spinneret cap 3, spinning head 1, filter cloth 8 and pad 4, wherein, spinning head, filter cloth and pad are assembled in the spinneret cap successively, the cross sectional shape of spinning head is thin-walled " п " shape, uniform spinneret orifice on the concave surface, its special feature is: the cross sectional shape of described spinneret orifice is trilobal, and the breadth length ratio of the every leaf size in the exit in hole is 1: 4~10.
Above-mentioned three leaf hole spinneret assemblies, described spinneret orifice divide two circles to be evenly distributed on the spinning head 4~10 of inner ring hole counts, 10~20 of outer ring hole counts.
Above-mentioned three leaf hole spinneret assemblies, three leaves of described spinneret orifice are 120 ° of distributions, and the top of leaf is a circular curve, each leaf connecting portion smooth transition of the porch in hole.
Above-mentioned three leaf hole spinneret assemblies, 30 ° at the importing angle of described spinneret orifice duct lead-in portion, long 0.32 millimeter of the exit leaf in hole, leaf is wide 0.04 millimeter.
Three leaf viscose filament yarns provided by the invention have the odd-shaped cross section of imitative T shape or Y shape, it has also circulated rigidity when keeping common viscose filament yarn flexibility, with its fabric that is woven into wrinkle sense of touch, elastic sensation is strong, feel sand is refreshing, fluffy insulation, moisture transported permeable is good, the mercerising sense is strong, imitative fiber crops are remarkably productive, have the composite effect of cotton, fiber crops, silk, hair.In addition, because the rough form of fiber surface makes light form random scattering on three leaves, making that fabric colourity is dark, vividness is high, is the desirable feedstock that is used for high-grade fabric and knitwear.The present invention also provides the method for preparing three leaf viscose filament yarns, it sprays the Changing Pattern that the back forms the viscose glue thread according to the specific (special) requirements and the viscose glue of viscose filament with abnormal section by the aperture, design corresponding technological conditions, and rational aperture of fit structure and duct size, make three leaf hole spinnerette go out the viscose filament yarn of 333.3dtex/18f.After testing, the physical and chemical indexes of three leaf viscose filament yarns reaches the level of suitable national standard, and the technology stability of three leaf viscose filament yarns and section morphology all reach the internal class level.
Description of drawings
Fig. 1 is the structural representation (the microscopically cross section is amplified 600 times) of viscose filament yarn of the present invention;
Fig. 2 is the spinneret assembly structural representation;
Fig. 3 is the spinning head structural representation;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is the hole shape figure in three leaf holes;
Fig. 6 is the A-A profile of Fig. 4;
The specific embodiment
Referring to Fig. 1, the cross sectional shape of the present invention's three leaf viscose filament yarns is approximate T shape or Y shape under nature.
The entire production process of three leaf viscose filament yarns is: pulpboard → dipping, squeezing, pulverizing → alkali cellulose → experienced → yellow, dissolving → viscose glue → back dissolving → filtration → deaeration, maturation → spinning glue → spinning → spinning cake → drip washing → oven dry → one-tenth tube.The master operation that forms three leaf viscose filament yarns in above-mentioned technical process is a spinning process, and the process of this operation is as follows: spinning glue → viscose glue measuring pump → filter → three leaf spinning head → acid baths → three leaves silk → drawing-off dish → coagulating bath roller → acid removing roller → washing → funnel → tophan box → spinning cake.The stretching of design of spinning head hole shape and spinning head is a key problem in technology of producing three leaf viscose filament yarns in spinning process.
Referring to Fig. 2, spinneret assembly of the present invention is made up of spinneret cap 3, spinning head 1, filter cloth 8 and pad 4.Referring to Fig. 3, Fig. 4, the cross sectional shape of spinning head 1 is thin-walled " п " shape, and concave bottom surfaces is provided with equally distributed spinneret orifice 2.In the spinning process that viscose glue is produced, spinning head is installed in the spinneret assembly, viscose glue is transported to spinning head accurately through measuring pump, spray with certain speed through the trilobal duct 2 on the spinning head 1, the viscose glue thread that the cross section is trilobal solidifies in the coagulating bath operation, decomposition reaction, the regeneration cellulose strand of coming into being by the drawing-off of spinning disc and spinning roller, is spun into three leaf cross sectional shapes with design, meets the viscose filament yarn that national corresponding mark requires.The design of the hole shape of spinning head is a key technology in said process.Viscose glue is subjected to shearing force when entering spinneret orifice population under pressure state effect produces entry-end effect, the viscose glue volume reduces, the elastic energy that is produced is stored in the viscose glue, elastic energy discharges and the generation resilience when viscose glue ejection aperture, produce the aperture effect that swells, viscose glue swells 2.5~3.5 times during than the duct, and bigger difference takes place for its body and former design shape.Be head it off, the trilobal spinneret orifice has adopted the when rational duct of bigger length and width size, shape and has imported angle, make the viscose glue thread of ejection have higher stretching value, cooperate the reasonable drawing-off of spinning disc, be spun into satisfactory three leaf viscose filament yarns.
Figure 5 shows that the shape of trefoil hole on the spinning head, Figure 6 shows that the duct shape.The larger-size one side in duct is the population 6 of viscose glue as seen from Figure 6, and size less one side in duct is viscose glue outlet 7.
The reference dimension of spinning head is as follows: 12 millimeters of spinning head recess diameters, 18 millimeters of maximum diameters, 0.25 millimeter of spinning head thickness, long 0.32 millimeter of spinneret orifice outlet position leaf; Leaf is wide 0.04 millimeter, 0.17 millimeter of duct lead-in portion length; The duct imports 30 ° of angles.
In the moulding of viscose glue thread, spinning head stretching value plays an important role, and stability, finished silk section morphology and the inherent quality of spinning all had a significant impact.The percentage of the difference of the draw speed of viscose glue thread and spouting velocity and spouting velocity is called the spinning head stretching.For the viscose filament yarn of circular cross-section, the general requirement of its spinning head stretching value is controlled between-10~5%.And for the viscose filament yarn of odd-shaped cross section, degree of deformation when going out the duct for swell effect and the viscose glue thread that reduces viscose glue thread aperture, under the prerequisite that process conditions allow, should suitably increase the difference of stretching of viscose glue thread and spouting velocity, promptly regularly at draw speed one, reduce the spouting velocity of viscose glue thread,, make shaping strand cross section possess intrinsic effect to reach higher stretching value.When selecting the stretching value, should be taken into account that also the molecularly oriented and the degree of crystallinity that make spinning head stretching value and as-spun fibre adapt.Through repetition test, produce three leaf viscose filament yarns and select for use 50~90% higher on the occasion of stretching.
The production of three leaf viscose filament yarns except that key problem in technology such as above-mentioned nozzle design and stretching value, also should be selected rational viscose glue physical and chemical indexes (viscosity, degree of ripeness), coagulation bath condition (H 2SO 4, ZnSO 4, Na 2SO 4, bathe temperature) and the process combination of spinning condition (spinning speed, drawing-off) could obtain good stability of spinning process of three leaf viscose filament yarns and qualified finished silk quality.
The embodiment that produces 333.3dtex/18f three leaf viscose filament yarns is provided below:
1. equipment:
Alkali cellulose is made: classic dipping press, group slimer;
Viscose glue is made: dissolving machine, blender, plate and frame filter press, deaerator are mediated in yellow;
Spinning: HKZ02005/I type semi-continuous centrifugal formula spinning machine;
Post processing processing: leaching machine, Water Extraction Machinery, dryer, bobbin winder.
Process conditions:
Spinning adhesive tape part: first fibre: 8.3 ± 0.1%; NaOH: 5.8 ± 0.1%; Sulphur: 2.3 ± 0.05%; Viscosity: 30 ± 5 seconds (20 ℃ of falling spheres); Degree of ripeness: 8.5~9.0ml.
Coagulation bath condition: H 2SO 4: 134 ± 1.0g/l; ZnSO 4: 12 ± 0.5g/l; Na 2SO 4: 280 ± 5g/l, bathe temperature: 54 ± 1 ℃.
Spinning condition: spinning head specification: three leaf hole shapes, the breadth length ratio of every leaf size are 1: 10; Spinning speed: 72.9m/mim; Spinning head stretching: on the occasion of 73%; Drawing-off: 25% and 4.12%.
Spinning cake drip washing condition:
Desulfurization: concentration NaOH 5.0 ± 0.2g/I; Temperature: 75 ± 2 ℃; Time: 120min;
Pickling: concentration HCL 5.0 ± 0.2g/I; Temperature: normal temperature; Time: 40min;
Oil: concentration 1.2 ± 0.2g/I; Temperature: 40 ± 2 ℃; Time: 40min;
Washing together: temperature: 50 ± 2 ℃; Time: 50min;
Two roads washing: temperature: 40 ± 2 ℃; Time: 40min;
Three roads washing: temperature: 35 ± 2 ℃; Time: 40min;
Four roads washing: temperature: 35 ± 2 ℃; Time: 40min.

Claims (9)

1. leaf viscose filament yarn, it is characterized in that: the cross section of described viscose filament yarn presents three strip branches and leaves of bifurcated, the branches and leaves T-shaped or Y shape that distributes, the length-width ratio of every leaf is 4~10: 1.
2. according to the preparation method of the described three leaf viscose filament yarns of claim 1, it carries out according to following operation:
A. soak, pressure, powder: after the pulp of preparation viscose glue stoste flood,, make alkali cellulose through squeezing, pulverizing in aqueous slkali; B. yellow: with alkali cellulose and CS 2Carry out the yellow reaction and obtain cellulose xanthate; C. the liposoluble of cellulose yellow acid is separated: adding dissolving alkali and water are made viscose glue in cellulose yellow acid fat; D.. viscose glue after filtration, maturation, deaeration form spinning glue; E. in acid bath, be spun into viscose filament yarn; After post processing, obtain the finished product viscose filament yarn again.It is characterized in that: affiliated spinning process adopts the spinning head of three leaf hole shapes, and the breadth length ratio of every leaf size is 1: 4~10;
3. the preparation method of three leaf viscose filament yarns according to claim 2 is characterized in that, the technological parameter that adopts in the described spinning process is spinning speed: 71~76m/min; Spinning head stretching value: 50~90%.
4. the preparation method of three leaf viscose filament yarns according to claim 3 is characterized in that: described spinning glue contains methylcellulose 7.7~8.5%, and NaOH 5.7~6.0%, and S 2.15~2.35%; Viscosity: 30~40 seconds; Degree of ripeness: 8.0~10.5ml.
5. the preparation method of three leaf viscose filament yarns according to claim 4 is characterized in that: described spinning acid bath consists of, H 2SO 4: 128~142g/1; ZnSO 4: 10~13g/l; Na 2SO 4: 248~290g/l; Bathe temperature: 50~60 ℃.
6. three leaf hole spinneret assemblies that prepare as viscose filament yarn as described in the claim 1,2,3,4 or 5, it is made up of spinneret cap (3), spinning head (1), filter cloth (8) and pad (4), wherein, spinning head, filter cloth and pad are assembled in the spinneret cap successively, the cross sectional shape of spinning head is thin-walled " Π " shape, uniform spinneret orifice on the concave surface is characterized in that: the cross sectional shape of described spinneret orifice (2) is trilobal, and the breadth length ratio of the every leaf size in the exit in hole is 1: 4~10.
7. three leaf hole spinneret assemblies according to claim 6 is characterized in that: described spinneret orifice divides two circles to be evenly distributed on the spinning head 4~10 of inner ring hole counts, 10~20 of outer ring hole counts.
8. three leaf hole spinneret assemblies according to claim 7, it is characterized in that: three leaves of described spinneret orifice are 120 ° of distributions, and the top of leaf is a circular curve, the porch in hole (6) each leaf connecting portion smooth transition.
9. three leaf hole spinneret assemblies according to claim 8, it is characterized in that: the importing angle of described spinneret orifice duct lead-in portion (5) is 30 °, long 0.32 millimeter of the exit in hole (7) leaf, leaf is wide 0.04 millimeter.
CNB2003101071345A 2003-11-26 2003-11-26 Three-leaves viscose, its making process and spinneret assembly thereof Expired - Fee Related CN1302161C (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100402712C (en) * 2005-04-11 2008-07-16 保定天鹅股份有限公司 Viscose filament with abnormal section, preparation method thereof and spinneret assembly
CN101343791B (en) * 2008-08-27 2010-12-29 卢新荣 Method for manufacturing polyester fibre changed throwing
CN102443864A (en) * 2011-08-11 2012-05-09 赛得利(江西)化纤有限公司 Three-leaf fiber production process and fiber spinning nozzle thereof
CN101831720B (en) * 2009-03-13 2013-09-18 中国纺织科学研究院 Profiled fiber and spinneret plate and preparation method thereof
CN105908272A (en) * 2016-07-01 2016-08-31 苏州甫电子科技有限公司 Ultrafine profiled spinning nozzle in composite structure and manufacturing method of ultrafine profiled spinning nozzle

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8527752D0 (en) * 1984-11-21 1985-12-18 Mitsubishi Rayon Co Acrylic fiber
JPS61113812A (en) * 1985-09-25 1986-05-31 Asahi Chem Ind Co Ltd Bulky viscose rayon filament
JPS63295709A (en) * 1987-05-27 1988-12-02 Mitsubishi Rayon Co Ltd Spinneret for melt spinning
GB2208277B (en) * 1987-07-30 1991-11-13 Courtaulds Plc Cellulosic fibre
JPH02277808A (en) * 1989-04-17 1990-11-14 Teijin Ltd Spinneret
JPH07172708A (en) * 1993-12-16 1995-07-11 Tanizawa Seisakusho:Kk Reel
GB9424612D0 (en) * 1994-12-07 1995-01-25 Courtaulds Fibres Holdings Ltd Fibres production
CN1085749C (en) * 1999-09-29 2002-05-29 吉林化纤股份有限公司 Viscose special-shaped short fiber, manufacturing method thereof and spinning jet
CN1173081C (en) * 2000-12-06 2004-10-27 宜宾丝丽雅股份有限公司 Flat viscose fibre and process for preparing it by one-step coagulating bath
CN2666933Y (en) * 2003-11-26 2004-12-29 保定天鹅股份有限公司 Viscose filament yarn deformed hole spinnerette packs

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100402712C (en) * 2005-04-11 2008-07-16 保定天鹅股份有限公司 Viscose filament with abnormal section, preparation method thereof and spinneret assembly
CN101343791B (en) * 2008-08-27 2010-12-29 卢新荣 Method for manufacturing polyester fibre changed throwing
CN101831720B (en) * 2009-03-13 2013-09-18 中国纺织科学研究院 Profiled fiber and spinneret plate and preparation method thereof
CN102443864A (en) * 2011-08-11 2012-05-09 赛得利(江西)化纤有限公司 Three-leaf fiber production process and fiber spinning nozzle thereof
CN105908272A (en) * 2016-07-01 2016-08-31 苏州甫电子科技有限公司 Ultrafine profiled spinning nozzle in composite structure and manufacturing method of ultrafine profiled spinning nozzle

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Address after: 071055, 1369 West Hing Shing Road, Xinshi District, Hebei, Baoding

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