CN1403638A - Hot-pipe spinning process of producing composite Dacron filament with special shape and different shrinkage - Google Patents
Hot-pipe spinning process of producing composite Dacron filament with special shape and different shrinkage Download PDFInfo
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- CN1403638A CN1403638A CN 01126744 CN01126744A CN1403638A CN 1403638 A CN1403638 A CN 1403638A CN 01126744 CN01126744 CN 01126744 CN 01126744 A CN01126744 A CN 01126744A CN 1403638 A CN1403638 A CN 1403638A
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Abstract
The heat pipe spinning technological process is used in producing composite Dacron filament with special shape and different shrinkage. Polyester melt is spun via a jetting board assembly with both specially shaped and circular jetting holes to obtain tow containing two kinds of corresponding raw filament and the two is produced into the composite Dacron filament product with special shape and different shrinkage through drafting in the heat pipes, networking and winding. The specially shaped filament has monofilament titer smaller than that of the circular one, the specially shaped filament has a heteromorphism of y=20-55%, the heat pipe has temperature controlled in 110-160 deg.c and length of 1000-2000 mm, and the spinning winding speed is 3500-5300 m/min.
Description
Technical field
The present invention relates to the manufacture method of polyester filament, particularly the manufacture method of composite Dacron filament with special shape and different shrinkage.
Background technology
Composite Dacron filament with special shape and different shrinkage is a kind ofly to comprise two kinds of terylene threads of odd-shaped cross section and circular cross-section and both have different hot water shrinkages' compound polyester filament, and shaped filaments is shunk for low usually, and circular wire be high contraction.This polyester composite filament is when the heat treatment such as road dyeing and finishing processing of back, and because of circular wire produces more the contraction than shaped filaments, shaped filaments produces the trickle natural curling tow surface that floats on, and the tow cross section presents multi-level fluffy structure, produces the disorder of appropriateness.Its fabric has plentiful appearance style, the soft heavy feel of hanging down, good resilience and desirable dyeability.In addition, the cross sectional shape of general shaped filaments has triangle or trilobal and cross etc., wherein the silk of triangle or trilobal can be given fabric gloss preferably, be usually used in spinning silk fabric, and criss-cross silk has moisture absorption preferably and hydrofuge performance, and is present also very popular as a kind of functional fiber.
In existing composite Dacron filament with special shape and different shrinkage manufacturing technique, the silk that obtain odd-shaped cross section generally is to adopt the spinneret component with respective shapes spinneret orifice to carry out spinning.And in order to make abnormity have different shrinkage factors with circular wire, usually need to adopt the spinning material of the polyester of different qualities viscosity for both, when the drawing-off of tow, can adopt identical or different drafting multiple, it is poor to adopt different drafting multiples can obtain bigger different contraction.Also can adopt identical polyester in addition is spinning material, just obtains different hot water shrinkages by the drawing-off of carrying out different multiples.Usually the drawing-off that two kinds of tow are carried out different multiples is to adopt different technology to carry out respectively on each comfortable draft apparatus, the whole like this journey more complicated that just seems of spinning, adopt two kinds of polyester raw materials then to need two and overlap the system that polyester fondant is provided to spinning part separately, this has increased the manufacturing cost of product undoubtedly significantly.
Summary of the invention
Technical problem to be solved by this invention provides a kind of simple relatively method and makes composite Dacron filament with special shape and different shrinkage, it adopts single polyester raw material of planting, and the drafting process of two kinds of hot water shrinkage's silks and not separated carrying out, the different contraction difference that makes bicomponent filament yarn can reach 10%～40%.
The manufacture method of composite Dacron filament with special shape and different shrinkage provided by the invention presents by following technical proposals:
Polyester fondant has spinneret component spinning special-shaped and two kinds of shape spinneret orifices of circle by one, obtains containing the tow of two kinds of corresponding spun filament, and tow carries out drawing-off by heat pipe, obtains the composite Dacron filament with special shape and different shrinkage product through network and coiling then.The filament number of shaped filaments wherein is less than the filament number of circular wire, degree of profile y=20～55% of shaped filaments, the temperature of heat pipe are controlled at 110～160 ℃, and heat pipe length is 1000～2000mm, spinning silk winding speed is 3500～5300 meters/minute, and described degree of profile is expressed from the next:
Wherein r is a shaped filaments cross section inscribed circle radius, and R is a circumradius.
Above-mentioned special-shaped spinneret orifice shape can be triangle or trilobal, perhaps is cross; The degree of profile y of shaped filaments is preferably 40～50%; Heat pipe length is preferably 1000～1400mm; Spinning silk winding speed is preferably 4000～4500 meters/minute; Shaped filaments is mixed fine than generally being 1.0～4.0 with circular wire.
In the prior art, hot-pipe spinning process is applied to the suitability for industrialized production of terylene maturely, is proved to be a kind of advanced person's terylene spinning production technology in recent years.From the whole journey of spinning, general hot-pipe spinning process roughly comprises two parts: the polyester fondant thread goes out spinnerets after air-cooled solidification forming is a spun filament; Spun filament directly enters heat pipe then, because tow is subjected to the effect of static and fluffy, the whole zone in heat pipe is by the effect of air, and tow produces stepless continuous drafting.Therefore the heat pipe drawing-off is different from the hot-rolling drawing-off, is a kind of even, soft drawing-off.
The mechanism of heat pipe drawing-off is unique, and tow is realized hot-stretch by means of the resistance of air, so the drafting multiple that tow is realized in heat pipe depends on the air drag that tow is subjected to, and the size of air drag depends on the size of monofilament specific surface to a great extent.Even when filament number is identical, shaped filaments has bigger specific surface than circular wire, and the heal specific surface of big silk of degree of profile is bigger, and the corresponding air drag that is subjected to of tow is also bigger, causes drafting multiple also big.The present invention has utilized this unique mechanism of heat pipe drawing-off dexterously, and two kinds of different spun filament of cross sectional shape are carried out the heat pipe drawing-off in same heat pipe, because two kinds of tow are subjected to different air drag, just can finish the drawing-off of different multiples.Finish degree of molecular orientation height in the silk of higher multiple drawing-off, have higher degree of crystallinity after the cooling, the hot water of silk shrinks just relatively little, final like this make just contain in the tow abnormity and circular two kinds of different cross section shapes and different hot water shrinkages thread.The contraction difference that it has been generally acknowledged that two kinds of silks in the composite Dacron filament with special shape and different shrinkage is 10%～40%, and is suitable, difference in shrinkage contractive effect less than 10% will be difficult to embody, and be higher than at 40% o'clock, and the tow after thermal contraction is too fluffy, and the yarn shape of making is also with variation.The inventor finds that through a large amount of experiments when the degree of profile of shaped filaments was 20～55%, the contraction difference of two kinds of silks can reach 10%～40% in the composite Dacron filament with special shape and different shrinkage.
Compared with the prior art, composite Dacron filament with special shape and different shrinkage manufacture method provided by the invention not only different hot water shrinkages' silk adopts a kind of polyester raw material spinning, and in same heat pipe, finish drawing-off, whole technical process and normal polyester long filament hot-pipe spinning process are basic identical, make the composite Dacron filament with special shape and different shrinkage manufacturing technique become very easy, the relative normal polyester long filament of manufacturing cost does not almost increase, and product has higher added value.
The specific embodiment
Embodiment 1～16:
Adopt screw extruder, polyester fondant is had spinneret component spinning special-shaped and two kinds of shape spinneret orifices of circle by one, obtain containing the tow of two kinds of corresponding spun filament, tow carries out drawing-off by heat pipe, obtains the composite Dacron filament with special shape and different shrinkage product through network and coiling then.Each embodiment spinnerets specification and relevant spinning process condition see Table 1, and product index sees Table 2.Table 1.
Annotate:
| Circular port (mm * mm * f) | Irregularly-shaped hole | Heat pipe length (mm) | Heat pipe temperature (℃) | Winding speed (rice/minute) | |
| Embodiment 1 | ??0.19×0.38×13 | Trilobal | ????1100 | ????125 | ????4000 |
| Embodiment 2 | ??0.19×0.38×13 | Cross | ????1100 | ????125 | ????4000 |
| Embodiment 3 | ??0.19×0.38×13 | Triangle | ????1100 | ????125 | ????4000 |
| Embodiment 4 | ??0.19×0.38×13 | Trilobal | ????1100 | ????125 | ????4000 |
| Embodiment 5 | ??0.19×0.38×13 | Trilobal | ????1100 | ????125 | ????4000 |
| Embodiment 6 | ??0.19×0.38×13 | Trilobal | ????1100 | ????125 | ????4300 |
| Embodiment 7 | ??0.19×0.38×13 | Trilobal | ????1100 | ????110 | ????4600 |
| Embodiment 8 | ??0.19×0.38×13 | Trilobal | ????1100 | ????140 | ????4200 |
| Embodiment 9 | ??0.19×0.38×13 | Trilobal | ????1100 | ????160 | ????4200 |
| Embodiment 10 | ??0.19×0.38×13 | Trilobal | ????1100 | ????125 | ????3400 |
| Embodiment 11 | ??0.19×0.38×13 | Trilobal | ????1100 | ????125 | ????3700 |
| Embodiment 12 | ??0.19×0.38×13 | Trilobal | ????1100 | ????125 | ????4300 |
| Embodiment 13 | ??0.19×0.38×13 | Trilobal | ????1100 | ????125 | ????4600 |
| Embodiment 14 | ??0.19×0.38×13 | Trilobal | ????1100 | ????125 | ????4000 |
| Embodiment 15 | ??0.19×0.38×13 | Trilobal | ????1100 | ????125 | ????4000 |
| Embodiment 16 | ??0.19×0.38×13 | Trilobal | ????1100 | ????125 | ????4000 |
1, irregularly-shaped hole specification: trilobal * 0.5 * 39f; Cross * 0.5 * 39f; Triangle * 0.5 * 39f.
2, abnormity and circular spinneret orifice are in respectively on alternately the concentric circles.Table 2.
| Total fiber number (dtex/f) | Profiled filament degree of profile (%) | Fracture strength (cN/dtex) | Extension at break (%) | Hot water shrinks poor (%) | |
| Embodiment 1 | ??83/52 | ????48 | ????3.90 | ????31.4 | ????21.2 |
| Embodiment 2 | ??83/52 | ????37 | ????3.86 | ????33.8 | ????18.0 |
| Embodiment 3 | ??83/52 | ????32 | ????3.81 | ????34.2 | ????16.3 |
| Embodiment 4 | ??83/52 | ????52 | ????3.92 | ????30.9 | ????23.6 |
| Embodiment 5 | ??83/52 | ????42 | ????3.84 | ????33.0 | ????20.5 |
| Embodiment 6 | ??83/52 | ????34 | ????3.79 | ????35.6 | ????16.5 |
| Embodiment 7 | ??83/52 | ????48 | ????3.76 | ????39.3 | ????23.8 |
| Embodiment 8 | ??83/52 | ????48 | ????3.85 | ????36.4 | ????22.0 |
| Embodiment 9 | ??83/52 | ????48 | ????3.91 | ????32.7 | ????17.8 |
| Embodiment 10 | ??83/52 | ????48 | ????3.94 | ????30.1 | ????24.2 |
| Embodiment 11 | ??83/52 | ????48 | ????3.53 | ????40.5 | ????11.5 |
| Embodiment 12 | ??83/52 | ????48 | ????3.89 | ????31.7 | ????6.7 |
| Embodiment 13 | ??83/52 | ????48 | ????3.93 | ????31.1 | ????3.9 |
| Embodiment 14 | ??111/52 | ????48 | ????3.82 | ????38.9 | ????27.1 |
| Embodiment 15 | ??132/52 | ????48 | ????3.78 | ????41.3 | ????26.4 |
| Embodiment 16 | ??167/52 | ????48 | ????3.73 | ????42.6 | ????24.8 |
In the table 2, total fiber number is formed: the low shaped filaments+height that shrinks shrinks circular wire; Shaped filaments and circular wire is mixed fine than being 3.0 among all embodiment.
Fracture strength is the average fracture strength of special-shaped different contraction combined yarn, and method of testing is according to " GB/T 14344-93 synthetic fiber filament and textured filament ultimate strength and extension at break test method ".
Hot water shrinks the boiling water shrinkage difference of difference for high constriction and low constriction in the special-shaped different contraction combined yarn, and the boiling water shrinkage method of testing is according to " GB 6505-86 synthetic fiber filament and textured filament boiling water shrinkage test method ".
Claims (8)
1, a kind of method of making composite Dacron filament with special shape and different shrinkage, it is characterized in that polyester fondant has spinneret component spinning special-shaped and two kinds of shape spinneret orifices of circle by one, obtain containing the tow of two kinds of corresponding spun filament, tow carries out drawing-off by heat pipe, obtain the composite Dacron filament with special shape and different shrinkage product through network and coiling then, the filament number of shaped filaments wherein is less than the filament number of circular wire, degree of profile y=20～55% of shaped filaments, the temperature of heat pipe is controlled at 110～160 ℃, heat pipe length is 1000～2000mm, spinning silk winding speed is 3500～5300 meters/minute, and described degree of profile is expressed from the next:
Wherein r is a shaped filaments cross section inscribed circle radius, and R is a circumradius.
2,, it is characterized in that described special-shaped spinneret orifice is shaped as triangle or trilobal according to the method for the described manufacturing composite Dacron filament with special shape and different shrinkage of claim 1.
3,, it is characterized in that described special-shaped spinneret orifice is shaped as cross according to the method for the described manufacturing composite Dacron filament with special shape and different shrinkage of claim 1.
4,, it is characterized in that degree of profile y=40～50% of described shaped filaments according to the method for claim 1,2 or 3 described manufacturing composite Dacron filament with special shape and different shrinkage.
5,, it is characterized in that described heat pipe length is 1000～1400mm according to the method for claim 1,2 or 3 described manufacturing composite Dacron filament with special shape and different shrinkage.
6,, it is characterized in that described spinning silk winding speed is 4000～4500 meters/minute according to the method for claim 1,2 or 3 described manufacturing composite Dacron filament with special shape and different shrinkage.
7, according to the method for claim 1,2 or 3 described manufacturing composite Dacron filament with special shape and different shrinkage, what it is characterized in that shaped filaments and circular wire in the described composite Dacron filament with special shape and different shrinkage product is mixed fine than being 1.0～4.0.
8,, it is characterized in that the filament number of silk in the described composite Dacron filament with special shape and different shrinkage product is 0.8～4.5dtex according to the method for claim 1,2 or 3 described manufacturing composite Dacron filament with special shape and different shrinkage.
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| CN 01126744 CN1403638A (en) | 2001-09-13 | 2001-09-13 | Hot-pipe spinning process of producing composite Dacron filament with special shape and different shrinkage |
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| CN 01126744 CN1403638A (en) | 2001-09-13 | 2001-09-13 | Hot-pipe spinning process of producing composite Dacron filament with special shape and different shrinkage |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162143A (en) * | 2011-03-30 | 2011-08-24 | 仪征市中兴涤纶纤维厂 | Preparation method of environment-friendly ultra-supple and ultra-elastic PTT (polytrimethylene terephthalate) fully drawn combined filament yarns by coloring nano-powder before melting |
| CN102181950A (en) * | 2011-03-30 | 2011-09-14 | 仪征市中兴涤纶纤维厂 | Preparation method of super-bright and showy special polyester fully-drawn mixed fiber filament for fabric tape |
| CN102797063A (en) * | 2012-07-04 | 2012-11-28 | 江南大学 | Preparation method of low-melting-point high-strength dacron composite monofilament |
| CN107345319A (en) * | 2017-06-15 | 2017-11-14 | 佛山市南海德耀纺织实业有限公司 | The preparation method of fiber with yarn identification function and recognition methods |
| US20190003081A1 (en) * | 2017-06-30 | 2019-01-03 | Yaoheng LIANG | Method of preparing a fiber filament capable of being identified, and a method of identifying the fiber filament |
-
2001
- 2001-09-13 CN CN 01126744 patent/CN1403638A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162143A (en) * | 2011-03-30 | 2011-08-24 | 仪征市中兴涤纶纤维厂 | Preparation method of environment-friendly ultra-supple and ultra-elastic PTT (polytrimethylene terephthalate) fully drawn combined filament yarns by coloring nano-powder before melting |
| CN102181950A (en) * | 2011-03-30 | 2011-09-14 | 仪征市中兴涤纶纤维厂 | Preparation method of super-bright and showy special polyester fully-drawn mixed fiber filament for fabric tape |
| CN102797063A (en) * | 2012-07-04 | 2012-11-28 | 江南大学 | Preparation method of low-melting-point high-strength dacron composite monofilament |
| CN107345319A (en) * | 2017-06-15 | 2017-11-14 | 佛山市南海德耀纺织实业有限公司 | The preparation method of fiber with yarn identification function and recognition methods |
| US20190003081A1 (en) * | 2017-06-30 | 2019-01-03 | Yaoheng LIANG | Method of preparing a fiber filament capable of being identified, and a method of identifying the fiber filament |
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