CN1031727A - Process for manufacturing of polyvinyl alcohol filaments - Google Patents
Process for manufacturing of polyvinyl alcohol filaments Download PDFInfo
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- CN1031727A CN1031727A CN 87107213 CN87107213A CN1031727A CN 1031727 A CN1031727 A CN 1031727A CN 87107213 CN87107213 CN 87107213 CN 87107213 A CN87107213 A CN 87107213A CN 1031727 A CN1031727 A CN 1031727A
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Abstract
A kind of boric acid and oxirane base polymer of in stoste, adding of disclosure of the Invention, the process of the high strength of production 6～300,000 , the polyvinyl alcohol filaments of high-modulus.This process using is carried out spinning, neutralization, damp and hot drawing-off, washing and process of thermal treatment route continuously, and drawing-off is continuous high drafting.Therefore, have the advantages that technological process is short, floor space is few, production efficiency is high.
Description
The present invention relates to total
Number is 6～300,000
High strength, the production technology of modulus poly (vinyl alcohol) endless tow, and employed equipment in this production process.
Polyvinyl alcohol (being designated hereinafter simply as PVA) fiber is widely used for each industrial circle.Often require its not only intensity height, but also will have the performance that other adapts to employed environment, for example, acidproof or alkali resistance, hot water resistance etc.For production is applicable to the PVA fiber of different industrial circles, developed the method for multiple production PVA fiber.For example spin slightly with dry method
The number long filament; In other component of PVA stoste admixture, as boric acid; Other high polymer of admixture is as N-hydroxyl first melamine; Dividing two sections to carry out drawing-off, or adopt method such as melt spinning, all is the concrete grammar that improves PVA fiber product performance.Improve the technology of PVA fibre property about these, can be referring to the clear 59-43112 of Japan Patent, clear 48-29210,37-6648,73-32623 etc.
Usually, the used admixture PVA stoste of boric acid when carrying out spinning will be expected the PVA fiber of high strength and modulus, and its total draft multiple will reach 14.5 times at least.For reaching such drafting multiple, generally adopt 500～1000 hole spinning heads to be spun into the PVA long filament and carry out processing such as damp and hot drawing-off, washing, drying, dry heat drafting again, to obtain high strength fibre.
The inventor finds, in the PVA of the boric acid that contains particular range amount stoste, the oxirane base polymer of admixture particular range amount again, and then use wet spinning, the total draft multiple can both obtain the PVA fiber alkaline-resisting, that hot water resistance good, intensity is high at 12～14.0 times.
Therefore, one of purpose of the present invention provides, admixture is pressed the boric acid and 0.05～1.5% oxirane base polymer of the weight calculating 0.8～5.5% of PVA in the PVA aqueous solution, after deaeration, with a plurality of relatively large number spinning head spinning, and the long filament boundling that is spun into, then with the washing bath apparatus of tow at neutralising arrangement, immersion and the spray of particular design, with carry out various chemical treatments, physical treatment and continuous high multiple drawing-off in the annealing device respectively, prepare thus that alkali resistance, hot water resistance are good, high strength, tow is total
Number is the method for 60,000～300,000 PVA endless tow.
Two of purpose of the present invention provide with method of the present invention produce total
Number is 6～300,000 bags PVA endless tow and the final product that is processed into of endless tow thus.
Another object of the present invention provides the device of employed particular design in technical process of the present invention.
When enforcement is of the present invention, all be to carry out continuously from operations such as the later spinning of the preparation of spinning solution, neutralization, damp and hot drawing-off, washing, heat treatments, the drawing-off mode is continuous high drafting, therefore has the technological process weak point, floor space is few, characteristics such as production efficiency height.Experiment showed, the dried fracture strength of PVA fiber in the time of 20 ℃ of producing with method of the present invention can reach 11.6 grams/
, initial modulus 264 grams/
, after 80 ℃ of constant-temperature hot water are handled 24 hours, its dried fracture strength be 11.2 grams/
; NaOH solution soaking through 30% is after 24 hours, and its dried fracture strength remains unchanged substantially, illustrates that it has good alkali resistance.Such PVA fiber can be widely used in various industrial circles.Can spin various monofilament commonly used with method of the present invention in addition
The endless tow of number, thus multiple monofilament can be obtained
The fiber of number can adapt to multiple needs.
Therefore the invention provides the borated PVA spinning solution of a kind of use, cooperate alkaline saltcake aqueous coagulation bath to carry out spinning with the relatively large spinning head, dehydrated crosslinking is shaped, again through boundling and the chemistry and the physical treatment that comprise drawing-off, the method of alkaline-resisting to produce, heat-resisting water, intensity height, PVA endless tow that modulus is high is characterized in that this method comprises the steps:
(1) the preparation pH value is 3～6.5, contains 0.8～5.5% boric acid by the weight of PVA, the spinning solution of 0.05～1.5% oxirane base polymer, and wherein the content of PVA is 14～20% by weight percentage;
(2) be 10～150 grams per liters with a plurality of relatively large spinning heads at alkali content, Na
2SO
4Content is to make stoste pass through spinnerets in the aqueous coagulation bath of 200～400 grams per liters, and dehydration and crosslinked shaping are again through the draw-off godet boundling and give preliminary draft simultaneously and always becomes after following processings
Number is 6～300,000 endless tow;
(3) endless tow behind the boundling enter particular design in and in the bath apparatus, this device has two poor bodies of respectively adorning a pair of roller (one of them be initiatively roller) at least, H is housed in poor
2SO
4Concentration is 15～120 grams per liters, Na
2SO
4Concentration be 200～400 grams per liters in and body lotion, during the bottom of roller and tow are immersed in and in the body lotion, endless tow stands neutralisation treatment and 15%～30% in this device neutralization is bathed drawing-off and is handled;
(4) after the endless tow after the neutralization bath processing is again through 80～150% damp and hot drawing-off, enter the water washing device that has spray and action of soaking simultaneously, in this device, the boric acid content in the endless tow fiber is washed till by the weight of PVA and counts 0.2%～0.8%, and wash saltcake and the sulfuric acid that has in the tow simultaneously off;
(5) last, endless tow enters the annealing device of particular design, stands the dried dry heat drafting processing that time is long and temperature is lower that subregion carries out in this device, carries out 120%～200% dry heat drafting, obtains total
Number is 6～300,000 alkaline-resisting, heat-resisting water, high strength PVA endless tow.
In technical process of the present invention, the content of PVA is generally 14%～20%(weight in the PVA spinning solution of being prepared).Boric acid content in the stoste is general in 0.8～5.5% scope by the weight of PVA, and is comparatively desirable in 1.55%～1.95% scope.The amount of oxirane base polymer (by PVA) is generally 0.05%～1.5% in the stoste, and even more ideal is 0.09%～0.65%.The mean molecule quantity of oxirane base polymer is generally between 200～3000.Specifically can use ethylene oxide polymer, for example mean molecule quantity is 200～3000 polyethylene glycol, and preferably mean molecule quantity is 1500; Fatty amine ethylene oxide condensate, for example commodity modifier 1815 or 1820 etc.
As everyone knows, when spinning high-intensity PVA fiber with borated PVA stoste, its total draft multiple at least will be at 14.5 times, just can obtain intensity height, PVA fiber that degree of stretching is low.Among the present invention and since in spinning solution admixture the oxirane base polymer of specified quantitative, as long as the total draft multiple reaches 12 times～14 times, just can access the fiber of high strength and modulus, and improve spinning and heat treated stability.
In the method for the invention, adopted relatively large spinning head, for example available 2000 holes～24000 holes.So just improved single ingot productive rate.Na in the spinning coagulation bath
2SO
4Concentration be generally 200～400 grams per liters, the concentration of NaOH is generally 10～150 grams per liters.If the NaSO of coagulating bath
4With the concentration of NaOH not in above-mentioned scope, the solidifiability of body lotion descends, and influences quality of fiber.
The concentration of NaOH and Na in the coagulating bath
2SO
4The assembly ratio of concentration must be rationally.Any one is occupied an leading position and all can make the solidifiability variation among the two.Na
2SO
4When concentration is higher than 400g/l, solidifies dehydration and play a leading role, reduced the drawing-off performance, do not have difference with common PVA wet spinning; If Na
2SO
4When concentration was lower than 200g/l, the NaOH gelling was greater than Na
2SO
4The dehydration freezing action, make the filament expansion when solidifying, as-spun fibre is easily bathed curling round the roll on the poor roller in neutralization, produces to be difficult to normally carry out.If NaOH concentration is when being higher than 150g/l, the gelatification of NaOH is strong excessively, the stoste thread limited coagulating bath soak long in dehydration, solidifiability reduces, fiber is too tender and bring difficulty to neutralisation treatment and operation, with Na
2SO
4Situation when concentration is low is the same.When if NaOH concentration is lower than 10g/l, with Na
2SO
4Situation when concentration is high is the same, the drawing of fiber decreased performance.
The shaping silk that comes out from coagulating bath gives boundling after the drawing-off through 100%～150% draw-off godet.Giving drawing-off with draw-off godet is to make as-spun fibre have certain preorientated, prevents that tow from expanding in neutralization is bathed, and also created condition for obtaining higher total draft multiple at last simultaneously.Tow total
Number should make the total of final product tow
Number is 6～300,000.Then tow is delivered to particular design in and bath apparatus in.
The neutralization bath is poor bathes poor the composition by two at least, and each is equipped with a pair of roller in bathing and being pickled with grains or in wine, and every pair of roller distance of shaft centers is selected between 1.5～6 meters, has one to be the power roller in every pair of roller, and another is driven roller.In every pair of roller, the axial angle that has a roller at least is adjustable.Regulate the angle of two rollers, can regulate the distribution of tow on roller.In the practical operation,, regulate the angle of two rollers, tow is evenly distributed according to the number of turns that tow between every pair of roller is walked around.During each is bathed and all to be equipped with in poor and body lotion, contain the H of 15～120 grams per liters in the body lotion
2SO
4Na with 200～400 grams per liters
2SO
4Bathing poor body lotion concentration wherein for each can be different, generally be the direction institute that advances along with tow through bathe be pickled with grains or in wine in the concentration of body lotion raise gradually.
The effect of neutralisation treatment is very big to the performance impact of the performance of endless tow and final product fiber.In general, endless tow is total
Number is few more, obtains good neutralisation treatment effect easily more; Always
Number is big more, is not easy to obtain good neutralisation treatment effect more.Especially endless tow centre wants the neutralisation treatment effect that reaches satisfied, relatively difficulty.
Handle tow with neutralisation treatment device provided by the invention, can regulate the operation of neutralisation treatment, successfully solved the difficulty of neutralisation treatment according to total bag of number of endless tow with to the requirement of final product.Tow is total
Number is thick more, and the effect requirements that neutralization is handled is high more, to this, can strengthen the function of neutralisation treatment.Concrete measure is that (1) can increase the poor number of neutralization bath,
(2) can regulate single neutralization bathe poor in and the concentration of body lotion and bathe poor between the difference of body lotion concentration,
(3) can increase the effective immersion length of tow in single bath is poor,
(4) regulate the number of turns that tow is walked around on every pair of roller, be generally 1.5～4.5 circles, ideal with 2.5 circles.
Endless tow from and come out in the treating apparatus after, enter wet heat drafting device, the damp and hot drawing-off through 80%～150% enters and has the spray and the water washing device of action of soaking simultaneously.
Water-washing process is the Na that will have in the endless tow
2SO
4Fall with pickling, and the content of the boric acid in the long filament after handling through washing should be at 0.2%～0.8%(by PVA weight) between.This be because, boric acid and oxirane base polymer and PVA are crosslinked, endless tow mesoboric acid too high levels, the degree of cross linking is excessive, has just limited the macromolecular chain slippage of PVA, makes the dry heat drafting degradation of endless tow.Obtain the intensity height, the total draft multiple is at least 12 times PVA endless tow, needs strict control water-washing process, to guarantee the dry heat drafting performance of endless tow.In general, endless tow is total
Number is big more, is not easy to obtain satisfied washing effect more.The present invention adopts the particular design water washing device, total in endless tow
Number is 6～300,000 o'clock, has all obtained satisfied washing effect.
It is poor to have at least two washings to bathe in the used water washing device among the present invention, and each is bathed the poor distance of shaft centers that every pair of roller of a pair of roller all is housed and selects between 1.5～6 meters, in every pair of roller, has at least the axial angle of a roller adjustable.Regulate the angle between two rollers, just can regulate the distribution of tow on roller.In the practical operation,, regulate the angle between two rollers, tow is evenly distributed according to the number of turns that tow between every pair of roller is walked around.Installing spray quinoline device can directly evenly spray on the tow water directly over tow.The liquid level that washing is pickled with grains or in wine is suitable with two roller axle center absolute altitudes, and the tow above the roller is accepted spray more than liquid level; The tow of roller below is subjected to soaking and water washing.
The effect that washing is handled also can be by the poor number of washing, spray flux, and the effective immersion length of tow in single washing is poor, the number of turns that tow is walked around on every pair of roller is regulated.The number of turns of generally walking around is 2.5～5.5, and is ideal with 3.5 circles.
In a better embodiment of the present invention, it is poor to use two washings to bathe, and around 3.5 circles, successfully the content with the fiber mesoboric acid is controlled between 0.2%～0.8% 40 ± 2 ℃ of tow of water temperature on every pair of roller.
After the washing, endless tow also needs through super-dry and dry heat drafting.Dry purpose is to remove the moisture content of tow, and makes endless tow can reach the thermoplastic state in the short period of time after preheating, so that carry out 120%～200% dry heat drafting.According to the endless tow that technology of the present invention is made, its surface is without any protective layer.Therefore, in the process that it is heat-treated, to treatment temperature, the pace of silk and quite strict in technological parameters such as the number of turns requirement of roller.Temperature is too high, and silk is easy to change and easily harden into band, and temperature is too low, and the macromolecular chain slippage is obstructed, inaccessible required drafting multiple.Endless tow total
Number is high, and draft speed is fast more, is difficult to guarantee the heat that fully provides heat treatment required more, also just is difficult to the drying effect of satisfaction guaranted, and the result causes dry heat drafting insufficient easily.
The invention provides and a kind ofly adopt lower temperature in the relatively long time, subregion is to endless tow heat-treating process step.Like this, adopt electric heating heating type Equipment for Heating Processing, just can successfully make total
Number is that 6～300,000 endless tow obtains satisfied heat treatment.Its technology and major parameter are as follows.
After the washing, tow at first enters predrying Equipment for Heating Processing, stands the pre-dried of lower temperature.In predrying process, along with tow advances, treatment temperature gradually or staged raise, generally temperature is controlled between 100 ℃～160 ℃ in this process.Through after predrying, tow enters and carries out intensive drying, baking temperature in the equipment for drying of higher temperature generally between 160 °～200 ℃, with about 170 ℃ ideal.Drying time is minimum to be 6 minutes.Tow is answered intensive drying, otherwise can influence the effect of dry heat drafting.Drying effect and tow total
Number is relevant with the distribution situation in the predrying equipment in drying with tow.In general total
Number is big more, and tow arrangement is thick more, should prolong predrying more and time dried.Time dry and pre-dried can be regulated by the length and the number of drier.
Tow through intensive drying enters the dry heat drafting device at once.In this device, at first tow is heated to the thermoplasticity state, general heating-up temperature is 220 ℃～300 ℃, is preferably in 255 ℃～265 ℃; Carry out 120%～200% dry heat drafting then.Behind dry heat drafting, carry out conventional setting again and handle, promptly obtain 60,000～300,000
Endless tow.
The tow alkali resistance of Zhi Zaoing like this, hot water resistance is all fine, and the intensity height, after cutting off, the staple fibre that available can be good.
Accompanying drawing is the schematic diagram of technological process of the present invention.
Import neutralisation treatment device I from come out integrated endless tow 7 of coagulating bath. This device has the neutralization more than two to bathe poor (1) and (2), and the roller in the grains is bathed in 2 expression neutralizations, and with the body lotion face, tow is at two rollers, 2 spaced windings, 1.5～4.5 circles in 3 expressions, and two roller axis angles are adjustable. After neutralisation treatment, tow is processed through the wet heat drafting device II. Import then the water washing device III, this device also has two liquid grains (1) and (2) at least, 3 expression liquid levels in the water washing device, 2 expression rollers, 5 expression shower waters. After washing, tow enters the annealing device IV, and heater (3) is wherein arranged, dry heat drafting device (4). Last tow is processed V through setting, imports coiling operation 6.
Following example can be described more specifically the present invention.
Example 1:
Use DP1750250, the PVA solution that the PVA of alcoholysis degree 99.9% makes, interpolation is to PVA weight 1.95% boric acid and 0.25% polyethylene glycol, being adjusted to PH with acetic acid is 4.5, make spinning PVA solution, with 3000 hole spinning head spinning more than 10, clamp-on with 470c.c/ minute discharge-amount and to contain 380g/lNa
2SO
4Solidify dehydration, crosslinked shaping in the coagulating bath of forming with 35g/lNaOH, the spinning bath temperature is 45 ℃.As-spun fibre after the spinning is drawing-off 100% between draw-off godet, and integrated subsequently 7.5 ten thousand
Above fibre bundle enters 395g/lNa
2SO
4And 85g/lH
2SO
4In forming and bath apparatus carry out neutralisation treatment, in and bath temperature be 50 ± 2 ℃, fiber is bathed poor two roller spaced windings, 2.5 circles in single neutralization, bathes through 2 neutralizations and poorly handles and give 15%～30% neutralization and bathe drawing-off.Then fibre bundle enters and contains 300g/lNa
2SO
4And H
2SO
4The temperature of concentration 15～50g/l is that 100% damp and hot drawing-off is finished in 88 ± 2 ℃ damp and hot drawing-off bath, then entering the water washing device with immersion and spray effect fully washs, washing temperature is 40 ± 2 ℃, fiber is at the poor two roller spaced windings of single washing 3.5 circles, after poor washing was bathed in 2 washings, fiber mesoboric acid content can be controlled at 0.2%～0.8%.Fiber after the washing enters electric heating heating type annealing device and carries out 140 ℃～170 ℃ the drying more than 6 minutes, it is further heating in 260 ℃ the baking oven that fiber after intensive drying enters temperature, make fiber reach the thermoplasticity state, finish the dry heat drafting more than 150%.Fiber behind the dry heat drafting promptly is wound into axle after heat-treating typing again, thereby makes total
Number is 7.5 ten thousand
Alkali resistance, the high strength PVA endless tow of excellent in resistance to boiling water.13 times of the total draw ratios of fiber.Fiber is done fracture strength 11.6g/d, initial modulus 264g/d, degree of stretching 7.7% in the time of 20 ℃; Handle after 24 hours in 80 ℃ of constant-temperature hot water, the dried fracture strength of fiber is 11.2g/d.
Example 2:
With DP1750 ± 50, the PVA solution that the PVA of alcoholysis degree 99.9% makes, interpolation is to PVA weight 1.85% boric acid and 0.35% polyethylene glycol, being adjusted to PH with acetic acid is 4.5, make spinning PVA solution, with 3000 hole spinning head spinning more than 10, clamp-on with the discharge-amount of 470c.c/min and to contain 380g/lNa
2SO
4Solidifying dehydration, crosslinked shaping, spinning bath temperature in the coagulating bath of forming with 35g/lNaOH is 45 ℃.As-spun fibre after the spinning is drawing-off 100% between draw-off godet, and integrated subsequently 7.5 ten thousand
Above fibre bundle enters 395g/lNa
2SO
4And 85g/lH
2SO
4In forming and bath apparatus carry out neutralisation treatment, in and bath temperature be 50 ± 2 ℃, fiber is bathed poor two roller spaced windings, 2.5 circles in single neutralization, bathes through the neutralization more than 2 and poorly handles and give 15%～30% neutralization and bathe drawing-off.Then fibre bundle enters with Na
2SO
4The temperature that contains certain acidity for main body is that 88 ± 2 ℃ damp and hot drawing-off is bathed and finished 100% damp and hot drawing-off, then entering the water washing device with immersion and spray effect fully washs, washing temperature is 40 ± 2 ℃, fiber is at the poor two roller spaced windings of single washing 3.5 circles, after poor washing was bathed in washing more than 2, fiber mesoboric acid content can be controlled at 0.2～0.8%.Fiber after the washing enters electric heating heating type annealing device and carries out 140～170 ℃ the drying more than 6 minutes, it is further heating in 260 ℃ the baking oven that fiber after intensive drying enters temperature, make fiber reach the thermoplasticity state, finish the dry heat drafting more than 150%.Fiber behind the dry heat drafting promptly is wound into axle after heat-treating typing again, thereby makes total
Number is 7.5 ten thousand
Alkali resistance, the high strength PVA endless tow of excellent in resistance to boiling water.13 times of the total draw ratios of fiber.Fiber is done fracture strength in the time of 20 ℃ be 12.5g/d, soaks 24 hours (normal temperature) in 30%NaOH solution, does fracture strength 12.43g/d, and intensity is almost constant; At Ca(OH)
2Soak 28 days (normal temperature) in (PH=11～13) aqueous solution, dry strength 12.42g/d, intensity is almost constant; Soaked 28 days in the normal temperature cement grout, do fracture strength 11.73g/d, heating 6 hours in 80 ℃ of cement liquid is after cooling continues to soak 28 days again, and dried fracture strength is 11.65g/d, and intensity decreases is considerably less.
(the continuous page or leaf of going up)
After the preceding revisal of the capable revisal of file name page or leaf
Claims 27 ... poly(ethylene oxide) class height ... the ethylene oxide high polymer
10 polymers
Specification 8 11 ... can be by drier ... can be by drying device
96 use DP175250, with DP1750 ± 50,
Claims (6)
1, add boric acid and other high polymer in polyvinyl alcohol stoste, improve fibre property, produce alkaline-resisting, heat-resisting water and intensity height, the total draft multiple is the process of 12～14.0 polyvinyl alcohol filaments, the method is characterized in that to comprise the steps:
(1) the preparation pH value is 3～6.5, contains 14～20% polyvinyl alcohol by gross weight, contains 0.8～5.5% boric acid and 0.05～1.5% ethylene oxide polymer spun silk stock solution by the weight of polyvinyl alcohol;
(2) be 10～150 grams per liters at alkali content, Na
2SO
4Content is in the aqueous coagulation bath of 200～400 grams per liters, uses the stoste spinning of a plurality of large-scale spinning heads with preparation, and dehydrated crosslinking is shaped, and makes as-spun fibre through the draw-off godet boundling again, and being given drawing-off simultaneously becomes after the processing of following step total
Number is 6～300,000 endless tow;
(3) endless tow is imported the neutralisation treatment device, in two neutralization baths of order were poor, tow around 1.5～4.5 circles, stood to contain the H of 15～120 grams per liters on the poor a pair of roller of each bath at least
2SO
4Na with 200～400 grams per liters
2SO
4In and the neutralization of the effect of body lotion and 15%～30% bathe the drawing-off effect, tow damp and hot drawing-off through 80%～150% in damp and hot drawing-off is bathed is handled then;
(4) then, tow is imported in the water washing device that has spray and action of soaking simultaneously, at least in the washing that two orders are arranged is bathed, tow encloses around 2.5～5.5 on a pair of roller that each washing is bathed, tow above the roller stands spray washing, tow below the roller stands water logging washing, with tow be washed till by pure polyvinyl alcohol weight boronic acid containing 0.2～0.8% and wash off simultaneously in the tow with Na
2SO
4And H
2SO
4
(5) last, tow is imported annealing device, in this device, tow at first carries out 100 ℃～160 ℃ pre-dried, carry out 160 ℃～200 ℃ dried again, drying time is minimum to be 6 minutes, carries out 120%～200% dry heat drafting processing at 220 ℃～300 ℃ at last, after the setting of routine was handled, obtaining total bag number was 6～300,000
Polyvinyl alcohol filaments.
2, the method for the described production polyvinyl alcohol filaments of claim 1 is characterized in that, contained poly(ethylene oxide) class high polymer is that mean molecule quantity is 200～3000 polyethylene glycol in the stoste of preparation in step (1).
3, the method for the described production polyvinyl alcohol filaments of claim 1 is characterized in that, contained poly(ethylene oxide) class high polymer is the fatty amine ethylene oxide condensate in the stoste of preparation in step (1).
4, the method for the described production polyvinyl alcohol filaments of claim 3 is characterized in that, wherein said fatty amine ethylene oxide condensate is commodity modifier 1815 or 1820.
5, each described process in the claim 1～4 is characterized in that, it is continuous high drafting that spinning in this technical process, neutralization, damp and hot drawing-off, washing, heat treatment are mode, the drawing-off carried out continuously.
6, employed neutralisation treatment device and water washing device in the process that claim 1～4 limited, it is characterized in that, these two kinds of devices are all formed by two body lotions are poor at least, during each body lotion is poor a pair of roller is housed all, every pair of roller distance of shaft centers is selected between 1.5～6 meters, all has the adjustable angle of a roller at axis direction in every pair of roller at least; And, there is one to be the power roller in every pair of roller in the neutralisation treatment device, can play the drawing-off effect to tow; Washing handle to be bathed poor top and is provided with spray equipment, and the tow in this is poor above the roller is subjected to spray washing, and the tow below the roller stands washing by soaking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87107213.0A CN1003872B (en) | 1987-10-30 | 1987-10-30 | 6-30 ten thousand bags polyvinyl alcohol filament bundle production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87107213.0A CN1003872B (en) | 1987-10-30 | 1987-10-30 | 6-30 ten thousand bags polyvinyl alcohol filament bundle production process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1031727A true CN1031727A (en) | 1989-03-15 |
| CN1003872B CN1003872B (en) | 1989-04-12 |
Family
ID=4816013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87107213.0A Expired CN1003872B (en) | 1987-10-30 | 1987-10-30 | 6-30 ten thousand bags polyvinyl alcohol filament bundle production process |
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| Country | Link |
|---|---|
| CN (1) | CN1003872B (en) |
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| CN103388189A (en) * | 2012-05-10 | 2013-11-13 | 中国石油化工集团公司 | Fine-denier or superfine-denier polyvinyl alcohol fiber and preparation method thereof |
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| CN106757403A (en) * | 2015-11-19 | 2017-05-31 | 张家港市宏盛贸易有限公司 | Spinning equipment before water-soluble fibre |
| CN111101219A (en) * | 2018-10-26 | 2020-05-05 | 中国石油化工股份有限公司 | High-strength high-modulus polyvinyl alcohol filament and preparation method thereof |
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-
1987
- 1987-10-30 CN CN87107213.0A patent/CN1003872B/en not_active Expired
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1309882C (en) * | 2001-08-08 | 2007-04-11 | 国家科研中心 | Composite fibre reforming method and uses |
| CN100390333C (en) * | 2006-01-17 | 2008-05-28 | 中国石化集团资产经营管理有限公司重庆天然气化工分公司 | Process and apparatus for manufacturing vinylon filament |
| CN101824715B (en) * | 2010-01-22 | 2012-05-16 | 中国人民解放军总后勤部军需装备研究所 | Method and device for rinsing and softening fiber bundles |
| CN103388189A (en) * | 2012-05-10 | 2013-11-13 | 中国石油化工集团公司 | Fine-denier or superfine-denier polyvinyl alcohol fiber and preparation method thereof |
| CN103388189B (en) * | 2012-05-10 | 2015-09-30 | 中国石油化工集团公司 | A kind of thin dawn or superfine-denier polyvinyl alcohol fiber and preparation method thereof |
| CN103774266A (en) * | 2012-10-26 | 2014-05-07 | 中国石油化工集团公司 | Preparation method of polyvinyl formal fiber |
| CN103255486B (en) * | 2013-05-09 | 2016-06-29 | 内蒙古双欣环保材料股份有限公司 | Heat treatment process method in the manufacture of polyvinyl alcohol high-strength high-modulus fibre |
| CN103255486A (en) * | 2013-05-09 | 2013-08-21 | 内蒙古双欣环保材料股份有限公司 | Heat treatment processing method in manufacturing of high-strength and high-modulus poval fibers |
| CN104103346A (en) * | 2014-07-30 | 2014-10-15 | 青岛华凯海洋科技有限公司 | Umbilical cable |
| CN106757403A (en) * | 2015-11-19 | 2017-05-31 | 张家港市宏盛贸易有限公司 | Spinning equipment before water-soluble fibre |
| WO2017086997A1 (en) * | 2015-11-20 | 2017-05-26 | General Electric Company | A polyvinyl alcohol porous support and method |
| CN111101219A (en) * | 2018-10-26 | 2020-05-05 | 中国石油化工股份有限公司 | High-strength high-modulus polyvinyl alcohol filament and preparation method thereof |
| CN111101219B (en) * | 2018-10-26 | 2022-08-12 | 中国石油化工股份有限公司 | High-strength high-modulus polyvinyl alcohol filament and preparation method thereof |
| CN113186611A (en) * | 2021-04-30 | 2021-07-30 | 成都新晨新材科技有限公司 | PBO filament continuous washing device and method |
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