CN100359050C - High whiteness and strength adhesive short fiber and process for making same - Google Patents
High whiteness and strength adhesive short fiber and process for making same Download PDFInfo
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Abstract
The present invention relates to a high white strength fine denier viscose staple fibre and a production technique thereof, which belongs to the viscose staple fibre of textile spinning industry and nonwoven industry and the production method. Raw materials comprise 86.7 to 92 wp% of cellulose fiber, 7.7 to 13 wp% of water and 0.15 to 0.30 wp% of oil agent. The raw materials are impregnated, squeezed, yellowed, spun, drawn, bundled, refined, secondarily bleached by oxydol and dried to prepare a finished product. Because a product of the present invention has the advantages of fine fineness, high intensity, high manufactured product yarn count and high manufactured product intensity, a garment material has the advantages of high intensity, strong abrasive resistance, fine hand feel, fold resistance, many-time deformation resistance, etc., and is beyond a garment material processed by a common viscose staple fiber through the same technique. A material of a fine count manufactured product is thinner; gram weight is low; the area of the material processed by a raw material of the same weight is increased; cost ls lowered.
Description
Technical field
The present invention relates to a kind of viscose staple fibre and production method of weave spinning industry and non-weaving cloth industry, particularly relate to a kind of high white powerful fine denier viscose staple fibre and production technology thereof.
Background technology
About so far 100 years history of common viscose staple fibre development, its quality index requires and the method for inspection is seen GB/T14463-1993 " viscose staple fibre " standard.Because its quality index determines it can only be mainly used in the traditional textile spinning.12 of its quality index, intensity, whiteness are lower, and cleanliness factor is poor, and the goods yarn strength is low, yam count is common, and is fair, and ABRASION RESISTANCE and anti-repeatedly morphotropism are relatively poor, can only be used for mill run production.
Summary of the invention
The purpose of this invention is to provide a kind of high white powerful fine denier viscose staple fibre and production technology thereof, it is main raw material with the cellulose fibre, the similar natural cotton of its properties of product.Fabric with its processing has good hygroscopicity, gas permeability, and is comfortable and easy to wear.Its technology is to adopt secondary clorox, hydrogen peroxide bleaching to improve product whiteness; Improve adhesive-preparing technology and improve the suitable spinning fine denier filament of spinnability; Improve spinning technique and carry high-speed spinning, draw ratio raising product strength; Improve refining process and reduce the product residual sulfur content, improve cleanliness factor etc.,
The technical scheme that realizes the foregoing invention purpose is: raw material of the present invention and weight percent content are: cellulose fibre 86.7-92%, water 7.7-13%, finish 0.15-0.30%.
The production method of high white powerful fine denier viscose staple fibre, it comprises the following steps
A, dipping: raw material is put into temperature: 49 ℃, the time:, the concentration of alkali: 220g/L: V-32 consumption: 0.5% (first fibre)
B, squeezing: raw material is pulverized with the squeezer squeezing, and its constant volume heavily is the 130-140 grams per liter;
C, experienced: sticking with experienced outlet copper, the raw material after pulverizing is experienced, and temperature 49-51 ℃, viscosity is 48mp;
D,, yellow: carbon disulfide is to the fine addition 32% of first, and the yellow time is 24-28 minute, temperature 18-35.8 ℃;
E,, spinning:
Acid bath: use the spinning bath acid bath, acid bath. temperature: 48-50 ℃, acid bath drop: 6g/L, the acid bath time is 1.9 seconds;
Two bathe: temperature 65-70 ℃, two bath times were 10-19 second;
F, drawing-off, boundling
Use the drawing machine drawing-off, total draft: 2.7 times, spinneret draft: 1.6 times;
G, concise:
99 ℃ of fine hair groove boiling temperatures, 80 ℃ of pickling temperatures, 80 ℃ of washings, 75 ℃ of alkali cleaning temperature, alkali concn 2.5g/L, 70 ℃ of two washing temperature,
H, the bleaching of hydrogen peroxide secondary, first step sodium hypochlorite bleaching is arranged in bleachery, bleaches clorox concentration 0.9g/L for the first time, 60 ℃ of temperature, 70 ℃ of pH value 10.0, three four washing temperature, three washing pH values 6.0,70 ℃ of oil bath concentration 5.gg/L, temperature, the second step hydrogen peroxide bleaching is arranged in the workshop section that oils, secondary bleaching hydrogen peroxide concentration 1.0g/L, 70 ℃ of temperature, pH value 8.0, the concise time: 10 minutes;
G, oven dry: Tumble Dry, bake out temperature is 60-130 ℃, after the oven dry, with the smart shredding of finished product, packing.
Owing to adopted technique scheme, remarkable advantage of the present invention is, this invention product is different with common viscose staple fibre performance indications, common viscose staple fibre is pressed the GB/T14463-1993 standard, totally 12 of quality index, this product is compared with mill run, and every index surpasses common viscose staple fibre, except that common 12 quality index, increase quality index appearance again newly with raw material at non-woven.
Filamentary fiber number is very big for the quality influence of goods, and is thinner with the kind filament, then the fiberizing process more evenly, fiber and the goods soft gloss of healing more is in harmonious proportion, elasticity and anti-repeatedly deformation stability are also higher.Product of the present invention is thin because of its fiber number, intensity is high, and goods yam count height, intensity height, garment material have the intensity height, ABRASION RESISTANCE is strong, feel is fine and smooth, anti-fold, anti-repeatedly distortion all surpass with the common viscose staple fibre of technology and process advantages such as garment material.High grade yarn goods lining is thinner, and grammes per square metre is low, and with the area increase of weight raw material processing lining, cost reduces.
0.90-1.40dtex * 32,38,51 millimeters viscoses belong to the clothes raw material, be fit to pure spin or with fiber blend such as terylene, make the high-grade clothing lining.Its goods yarn, lining price all improve than mill run.Demand constantly increased in recent years, and market is widely arranged especially abroad, and supply falls short of demand, belonged to high value added product.Product of the present invention not only has good hygroscopicity, gas permeability, comfortable and easy to wear, because of characteristics such as its whiteness height, cleanliness factor height, sulfur content are lower, meet directly textiles requirement of wearing clothes next to the shin, be suitable for being directly used in and make senior underwear, shirt, infant-wear.The high white powerful fine denier viscose staple fibre that my company produces is best in quality, this launch products obtains extensive favorable comment, success exports to states such as the U.S., Switzerland, Italy, Turkey in a large number, the moon, sales volume hundreds of ton was to last kiloton, for high added value clothes industry provides abundant raw material, promote large-scale production development with clothing items such as senior underwear, shirts.Along with improving constantly of people's living standard, the demand of this senior textile raw material constantly increases, and vast market prospect is at home and abroad arranged.
The specific embodiment
A, products material embodiment
Cellulose fibre of the present invention is a main matter of the present invention, is used for the processing of being spinned.Raw material components and percentage by weight are: cellulose fibre 86.7-92%, water 7.7-13%, finish 0.15-0.30%.
Raw material components and weight percent content embodiment:
1, cellulose fibre 86.7, water 13, finish 0.3..
2, cellulose fibre 92, water 7.7, finish 0.3..
3, cellulose fibre 88, water 11.85, finish 0.15..
4, cellulose fibre 90, water 9.8, finish 0.2.
The effect of three kinds of raw materials is:
Water, fiber are placed the nature moisture regain naturally, impossible over dry, and fiber product contains certain water when being produced can be antistatic.
Finish, lubricated, antistatic property have been processed in weaving, and make fiber have certain friction, and the fortifying fibre spinnability is easy to processing.
B, process invention
1. the capital equipment of Cai Yonging (seeing the following form)
| Sequence number | Title | Model | Country origin |
| 1 | Squeezer | AB72 * | Austria Lenzing company |
| 2 | Xanthating machine | SUMA27 | Austria Lenzing company |
| 3 | The viscose filtration machine | KKF18 | Austria Lenzing company |
| 4 | Spinning machine | SM80/800 | Austria Lenzing company |
| 5 | Drawing machine | Austria Lenzing company | |
| 6 | Refiner | Austria Lenzing company | |
| 7 | Dryer | U.S. PROCTOR company | |
| 8 | 11 imitate flash distillation | Germany Eboer company | |
| 9 | 4 grades of crystallizers | Germany Eboer company |
2. technological process
The present invention adopts the technological process in the technical scheme to be:
(1), with raw material feed the dregs of rice in proportion, dipping is pulverized with the squeezing of AB72 type squeezer, its constant volume heavily is the 130-140 grams per liter;
(2), experienced: sticking with experienced outlet copper, the raw material after pulverizing is experienced, and temperature 49-51 ℃, viscosity is 48mp;
(3), yellow: carbon disulfide is to the fine addition 32% of first, and the yellow time is 24-28 minute, temperature 18-35.8 ℃
(4), spinning:
Acid bath: use the spinning bath acid bath, acid bath. temperature: 48-50 ℃, acid bath drop: 6g/L, the acid bath time is 1.9 seconds
Two bathe: temperature 65-70 ℃, two bath times were 10-19 second
(5) drawing-off, boundling
Use the drawing machine drawing-off, total draft: 2.7 times, spinneret draft: 1-6 doubly
(6) concise:
99 ℃ of fine hair groove boiling temperatures, 80 ℃ of pickling temperatures, 80 ℃ of washings, 75 ℃ of alkali cleaning temperature, alkali concn 2.5g/L, 70 ℃ of two washing temperature,
The bleaching of hydrogen peroxide secondary, first step sodium hypochlorite bleaching is arranged in bleachery, bleaches clorox concentration 0.9g/L for the first time, 60 ℃ of temperature, 70 ℃ of pH value 10.0, three four washing temperature, three washing pH values 6.0,70 ℃ of oil bath concentration 5-8g/L, temperature, the second step hydrogen peroxide bleaching is arranged in the workshop section that oils, secondary bleaching hydrogen peroxide concentration 1.0g/L, 70 ℃ of temperature, pH value 8.0, the concise time: 10 minutes;
(7) oven dry: Tumble Dry, bake out temperature is 60-130 ℃, after the oven dry, with the smart shredding of finished product, packing.
3. main technologic parameters
| The technology title | Unit | Numerical value | Control accuracy |
| The proofing liquid temp | ℃ | 48-50 | |
| Proofing liquid concentration | g/l | 220 | ±1 |
| V-32 consumption (to the first fibre) | ％ | 0.05-0.1 | |
| Alkali is fine to be formed: the fine alkali of first | ％ ％ | 31 16 | ±1 ±1 |
| Experienced outlet copper is sticking | mp | 55 | ±5 |
| CS2 addition (to the first fibre) | ％ | 32 | |
| Spinning glue is formed: the fine alkali of first | ％ ％ | 8.8 5.2 | ±0.1 ±0.1 |
| The spinning adhesiveness | S | 55 | ±7 |
| Spinning glue degree of ripeness | H | 16 | ±1.5 |
| Two bathe: the sulfuric acid concentration temperature | g/l ℃ | 50-60 70 | |
| I road degree of draft | ％ | 65-75 | |
| II road degree of draft | ％ | -1 | |
| The NaOH temperature is bathed in desulfurization | g/l ℃ | 2-3 80 | |
| Bleaching bath: NaClO concentration-temperature pH value | g/l ℃ | 0.6-1.2 60 9.8 | ? ? ±0.5 |
| Oil bath: oil concentration H 2O 2The concentration-temperature pH value | g/l g/l ℃ | 5-7 0.5-1.5 70 8.0 | ? ? ? ±0.5 |
| Bao Chong | Kg | 220 | ±10 |
| Acid bath is formed: sulfate sulfatase sodium zinc sulfate | g/l g/l g/l | 118 350 10 | ±2 ±10 ±0.5 |
| The acid bath temperature | ℃ | 48-49 | ±1 |
| The acid bath drop | g/l | ≤7 |
Four, key problem in technology
Because of to the having relatively high expectations of several finished product important technology indexs such as the fiber number of this fiber, intensity, length, require to produce and to keep stable.Ripe explained hereafter condition be positioned 96 ingots, 65-75 rice/minute spin speed, both guaranteed the stable of end product quality, reached highly efficient and productive purpose again.Compare with common viscose staple fibre and to have special technology and quality requirement, we have taked following concrete measure:
1, this fiber is compared with general fibre, at first, specific (special) requirements is arranged on length.Increased by 32 millimeters, 40 millimeters, 51 millimeters by simple 38 millimeters, and control accuracy is more strict than mill run, the length of fiber is stabilized in ± and 1.5 millimeters, control accuracy has improved 50%.
2, the fiber number of this fiber has reduced by 20.1% than general fibre, and single wire fracture takes place in the spinning process easily, and this just need adjust many important preceding spinning technique indexs that reach of spinning.The viscosity of spinning glue was brought up to 50 ± 5 seconds by former 45 ± 5 seconds, and the fine content of the first in the spinning glue brings up to 8.8% by original 8.5%, and control accuracy has improved 20%; Improved spinning head and changed a frequency, the fiber number fiber number of fiber has been controlled at firmly ± the very narrow scope of 0.04dtex in.
3, fiber of the present invention is thinner because of its filament, and strong to doing, the wet important indicator that influences spinnability such as strong has higher requirement.For improving the intensity of goods yarn, require raw fiber intensity higher.The present invention improves from production technology in many ways for improving intensity, improves spinning glue degree of ripeness, contains alkali, reduces the spinning bath sulfuric acid concentration, carries high-speed spinning, improves spinning one degree of draft, improves fiberizing, and fibre strength improves.At first perfect whole wood pulp production technology, use import high-quality wood pulp, the approaching pulp raw material of degree of polymerization scope is used in strictness, stablizes every index of spinning glue, make the fluctuation of fibrous finished product intensity dwindle 20%, spinning glue degree of ripeness is brought up to more than 14 by former 12; Secondly, adjusted the major control index of spinning bath, sulfuric acid concentration was brought up to 118 ± 1 grams per liters by 116 ± 2 former grams per liters in the spinning bath.Zinc sulfate concentration was brought up to 10 ± 0.5 grams per liters by 9.8 ± 0.5 former grams per liters.In addition, improved spinning technique one degree of draft greatly, made the condition of molding of fiber obtain improving completely, dried, the wet strength of fiber obviously improve.Doing of finished fiber to be strong, wet has been controlled at 2.5CN/dtex by force respectively, more than the 1.20CN/dtex, satisfied the requirement of spinning, weaving fully.
4, this fibre whiteness requires more than 85%, the sodium hypochlorite bleaching technology that prior art adopts, and whiteness can only maintain between the 82-84%, for improving the finished product whiteness, must adopt the bleaching of hydrogen peroxide secondary.First step sodium hypochlorite bleaching is arranged in bleachery, and the second step hydrogen peroxide bleaching is arranged in the workshop section that oils.Hydrogen peroxide bleaching and sodium hypochlorite bleaching process conditions difference are very big, and the series adjustment by pH value, concentration, circular flow etc. has reached more than 85% the finished product whiteness.When producing this fiber in addition, we use the higher pulp of whiteness as far as possible, to avoid because of pulp cause influence finished product whiteness.
5, the GB high-class product require product residual sulphur below 14mg/100g, be to improve postorder user yarn product quality, the residual sulphur control of the product of my company is generally about 6-10mg/100g.For this reason, we improve emphasis technology, at first adjust fine hair forming tank temperature, make the more abundant evaporation of fiber carbon disulfide.Newly gone up four acid bath filters, improved the acid bath filtration yield, the important indicator-acid bath transparency integral body that influence the residual sulphur of finished product has improved about 20%, and simultaneously, we hour bring up to 1.3 cubes of/ton silks hour to 1.1 cubes of/ton silks of internal circulating load of desulfurization bath again.The 6-10mg/100g that controlled to the residual sulfur content success of this fiber.
6, high white powerful fine denier viscose staple fibre has strict requirement because of the particularity of its purposes to the impurity contents such as stain in the finished product.On former viscose staple fibre basis, increased the appearance items check for this reason.In order to reduce the impurity content in the finished product, technical staff's repetition test is groped, and existing equipment has been carried out a large amount of transformations.Go into the place at former slop feeding and install capping additional, dryer is changed the novel seal bar, makes the postprocessing working procedures of product be in full closeding state, has stopped to leak the pollution of hair and outer bound pair fiber.Newly-increased millipore filter has been realized the whole filtrations to two baths, acid water, desulphurization circulating working solution, has stopped the source of impurity in the fiber substantially.Impurity content in the finished product reduces significantly, and the product cleanliness factor has surpassed domestic standard, has reached the international standard requirement substantially.
7,, formulated product company standard " high white powerful fine denier viscose staple fibre " with reference to international and domestic current standard.
Six, embodiment
1, dipping:
Temperature: 49 ℃, the time:, the concentration of alkali: 220g/L: V-32 consumption: 0.5% (first fibre)
2, experienced:
Temperature: 51 ℃, viscosity 48mp
3, yellow:
Carbon disulfide is to the fine addition 32% of first, the yellow time: 26 minutes, and 18 ℃ of initial temperature, temperature eventually: 35.8 ℃
4, back dissolving: 19 ℃ of temperature, time: 55 minutes
5, spinning
Acid bath: sulfuric acid concentration: 118g/L, sodium sulfate concentration:: 348g/L, zinc sulfate concentration: 10.1g/L, temperature: 49 ℃, acid bath drop: 6g/L
Two bathe: 70 ℃ of temperature, sulfuric acid concentration: 55g/L, sodium sulfate concentration: 120g/L.
6, drawing-off, boundling
Total draft: 2.7 times, spinneret draft: 1.6 times
7, concise:
99 ℃ of fine hair groove boiling temperatures, 80 ℃ of pickling temperatures, 80 ℃ of washings, 75 ℃ of alkali cleaning temperature, alkali concn 2.5g/L, 70 ℃ of two washing temperature, once bleach clorox concentration 0.9g/L, 60 ℃ of temperature, pH value 10.0,70 ℃ of three or four washing temperature, three washing pH values 6.0,70 ℃ of oil bath concentration 5.8g/L, temperature, secondary bleaching hydrogen peroxide concentration 1.0g/L, 70 ℃ of temperature, pH value 8.0, concise time: 10 minutes.
8, oven dry: temperature 60-130 ℃
9, end product quality:
Outward appearance: no color differnece, color spot, stain, dirt, peculiar smell
Do fracture strength: 2.69CN/dtex
Wet breaking strength: 1.40CN/dtex
Dried elongation at break: 19.3%
Line density deviation ratio: 0.75%
Length variation rate :-1.3%
Overcut fibre: 0.1%
Over-length fibre: 0.04mg/100g
Residual sulfur content: 8.6mg/100g
Fault: 1.3mg/100g
Greasy dirt yellowish fiber: 0mg/100g
Do the strong coefficient of variation: 13.00%
Whiteness: 86.0%
Oil content: 0.25%
Regain: 10.95%
Grade: high-class product.
Claims (3)
1, a kind of high white powerful fine denier viscose staple fibre, its raw material and weight percent content are: cellulose fibre 86.7-92%, water 7.7-13%, finish 0.15-0.30%, its fibre length comprises 38,40,51 millimeters, it is characterized in that, its whiteness greater than 85%, fiber number 0.90-1.40dtex, 32 millimeters of length, do powerful in equaling 2.5CN/dtex, wet powerful in equaling 1.20CN/dtex.
2, a kind of production method of making the white powerful fine denier viscose staple fibre of claims 1 described height is characterized in that it comprises the following steps
A, dipping: raw material is put into temperature: 49 ℃, the concentration of alkali: 220g/L: the consumption of the fine weight percent concentration of the relative first of V-32 denaturant: 0.5%;
B, squeezing: raw material is pulverized the heavy 130-140 grams per liter of constant volume with the squeezer squeezing; Experienced: sticking with experienced outlet copper, the raw material after pulverizing is experienced, and temperature 49-51 ℃, viscosity is 48mp;
C, yellow: carbon disulfide is to the fine addition 32% of first, and the yellow time is 24-28 minute, temperature 18-35.8 ℃;
D, spinning:
Acid bath: use the spinning bath acid bath, acid bath. temperature: 48-50 ℃, acid bath drop: 6g/L, the acid bath time is 1.9 seconds;
Two bathe: temperature 65-70 ℃, two bath times were 10-19 second;
E, drawing-off, boundling
Use the drawing machine drawing-off, total draft: 2.7 times, spinneret draft: 1.6 times;
F, concise:
99 ℃ of fine hair groove boiling temperatures, 80 ℃ of pickling temperatures, 80 ℃ of washings, 75 ℃ of alkali cleaning temperature, alkali concn 2.5g/L, 70 ℃ of two washing temperature;
G, by adjusting pH value, concentration, the circular flow of hydrogen peroxide, with the bleaching of hydrogen peroxide secondary, first step sodium hypochlorite bleaching is arranged in bleachery, bleach for the first time clorox concentration 0.9g/L, 60 ℃ of temperature, 70 ℃ of pH value 10.0, three four washing temperature, three washing pH values 6.0,70 ℃ of oil bath concentration 5-8g/L, temperature, the second step hydrogen peroxide bleaching is arranged in the workshop section that oils, secondary bleaching hydrogen peroxide concentration 1.0g/L, 70 ℃ of temperature, pH value 8.0;
The concise time: 10 minutes;
H, oven dry: Tumble Dry, bake out temperature is 60-130 ℃, after the oven dry, with the smart shredding of finished product, packing.
3, the production technology of the white powerful fine denier viscose staple fibre of height according to claim 2, the sulfuric acid concentration of described acid bath spinning bath: 118g/L, sodium sulfate concentration: 348g/L, zinc sulfate concentration: 10 ± 0.5g/L, two bathe the sulfuric acid concentration of spinning bath: 55g/L, sodium sulfate concentration: 120g/L.
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| CN100417764C (en) * | 2006-09-08 | 2008-09-10 | 唐山三友集团化纤有限公司 | Ultrashort viscose fiber in paper making, and manufacturing method |
| CN102251299A (en) * | 2011-05-20 | 2011-11-23 | 新乡化纤股份有限公司 | Fine denier cellulose filament fiber and manufacture method thereof |
| CN102251300B (en) * | 2011-05-20 | 2012-11-07 | 新乡化纤股份有限公司 | Superfine-denier cellulose filament fiber and manufacturing method thereof |
| CN102251301B (en) * | 2011-06-30 | 2013-05-15 | 龙达（江西）差别化化学纤维有限公司 | Production process of ultrafine-denier high-strength viscose fibers |
| CN103290671B (en) * | 2013-06-17 | 2015-07-01 | 宜宾丝丽雅股份有限公司 | High-brightness viscose staple fiber refining bleaching technology |
| CN103305939B (en) * | 2013-06-29 | 2016-01-20 | 宜宾丝丽雅股份有限公司 | A kind of production technology of fine denier viscose staple fiber |
| CN103774262B (en) * | 2014-01-24 | 2017-04-19 | 阜宁澳洋科技有限责任公司 | Superfine ultrashort viscose staple fiber for environment-friendly filtering material and preparation method thereof |
| CN104790053A (en) * | 2015-04-21 | 2015-07-22 | 常熟市翔鹰特纤有限公司 | Method for manufacturing superfine denier viscose fibers |
| CN105133077B (en) * | 2015-07-30 | 2017-07-28 | 恒天海龙（潍坊）新材料有限责任公司 | A kind of fine count fiber cellulose fiber and preparation method thereof |
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