CN101760796A - Preparing method of PBT false-twist textured yarns - Google Patents
Preparing method of PBT false-twist textured yarns Download PDFInfo
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- CN101760796A CN101760796A CN200910262863A CN200910262863A CN101760796A CN 101760796 A CN101760796 A CN 101760796A CN 200910262863 A CN200910262863 A CN 200910262863A CN 200910262863 A CN200910262863 A CN 200910262863A CN 101760796 A CN101760796 A CN 101760796A
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Abstract
The present invention relates to a preparing method of PBT false-twist textured yarns, which comprises the following steps: 1. material is crystallized in advance, and the material is PBT cutting sheets, and hot air is dried to crystallize in advance; 2. the material is fed in a screw rod type: the PBT cutting sheets are fed into a screw rod extruding press from a feeding machine; 3. filtration: a mixture extruded by the screw rod extruding press is filtered, and the continuous production of spinning and the constant of pressure of the screw rod extruding press are ensured when in filtration; 4. spinning: the mixture out of a filter enters a spinning component, and is sprayed from a spinneret plate through the spinning component; 5. PBT yarns passing through a section of a hot plate in a false twister is deformed into a screw ring shape by once heating to become the PBT false-twist textured yarns. The PBT false-twist textured yarns prepared by the method of the present invention has the advantages of thin and thick solid curl, predominant rebound resilience, soft hand feeling and good dyeing property, and are ideal wool and eiderdown simulating raw material.
Description
Technical field
The present invention relates to a kind of preparation method of PBT silk, particularly a kind of preparation method of PBT false-twist textured yarn.
Background technology
The PBT fiber is the abbreviation of poly fiber (butylene terephthalate fiber), is the favourite son of engineering plastics.Japanese Supreme Being people company had at first released the PBT fibre in 1979.Along with the development of fibre in differentiation, PBT just progressively is familiar with by people as the use value of fiber.PBT is by high purity terephthalic acid (TPA) or dimethyl terephthalate (DMT) (DMT) linear polymer with 1,4 butanediol esterification aftercondensated, through melt spinning make fiber, belong to a kind of of polyester fiber.Normal dimethyl terephthalate (DMT) and 1,4 butanediol of adopting be by ester exchange in the production, and under higher temperature and vacuum, is that catalyst carries out polycondensation reaction with organic titanium or stannide and butyl titanate, makes the PBT fiber through melt spinning again.240～280 ℃ of spinning temperatures should adopt medium velocity or high speed spinning, about 80 ℃ heat dish or 120 ℃ hot plate stretching.The intensity of this fiber is 30.91～35.52cN/tex, and percentage elongation 30%～60%, fusing point are 223 ℃, and its crystallization speed has fabulous elasticity of elongation response rate and soft chromatophilous characteristics than poly-to dibenzoic acid second diester fast 10 times.Also can with polyethylene terephthalate, polypropylene carry out composite spinning or with polyester, polyamide, polypropene blended spinning, fibre strength 2.7～4.5cN/dtex.
Do not see at present the relevant report of the preparation method of PBT false-twist textured yarn.
Summary of the invention
Technical problem solved by the invention is to provide a kind of preparation method with curling, the superior elastic PBT false-twist textured yarn of thin and close solid.
The technical solution that realizes the object of the invention is: a kind of preparation method of PBT false-twist textured yarn may further comprise the steps:
Step 1, material is carried out pre-crystallization, described material is the PBT section; The concrete heated drying air that adopts is carried out pre-crystallization;
Step 2, the feeding of material screw: in PBT (polybutylene terephthalate) section feeding machine feeding screw extruder;
Step 3, filtration are filtered the mixture after the extruder extruding, guarantee the constant of continuous production spinning and screw extruder pressure when filtering;
Step 4, spinning, the mixture after coming out from filter enters filament spinning component, sprays from spinnerets by filament spinning component;
Step 5, with the PBT silk through one section hot plate in the false twister, become spiral coil shape through heating distortion once, promptly form the PBT false-twist textured yarn.
The present invention compared with prior art, its remarkable advantage: 1) having that thin and close solid is curled, a superior resilience, soft and good dyeability, is desirable simulate wool, and the down-like raw material is worn comfortable; 2) have, heat resistance better, light resistance, strong, the quick-drying washable characteristics of corrosion resistance than general terylene fracture strength and elastic modelling quantity height, HEAT SETTING excellence, rebound performance; 3) have that bulkiness height, thermal insulation are good, comfortable feel, characteristics that gloss is soft; 4) have characteristics such as flow process is short, efficient is high, quality is good; 5) quality is also very soft, and is simultaneously also more frivolous; 6) have good dyeability, available common DISPERSE DYES is carried out boiling dyeing at normal pressure, and need not carrier.Dye to such an extent that fiber is bright in luster, COLOR FASTNESS and chlorine resistance are good.
The specific embodiment
The object of the present invention is to provide a kind of technology simple, the preparation method of the fast PBT false-twist textured yarn of speed that is shaped.The processing step of this method mainly is divided into two parts: first, it is ready earlier PBT to be cut into slices, with the suction instrument PBT is sucked the wet feed storehouse, with the PBT intensive drying of cutting into slices, is the situation of 380V under at voltage by drying bed, and the PBT section that has been dried is through strong high temperature melt, carry out spinning through spinning head again, tow enters the predraft of predraft machine through the blowing cooling, reels through winding head again, promptly obtains the PBT silk.
The second, the PBT silk through one section hot plate in the false twister, is become spiral coil shape through once heating distortion, promptly form the PBT false-twist textured yarn.Above-mentioned steps is specially:
Step 1, material is carried out pre-crystallization, described material is the PBT section; The concrete heated drying air that adopts is carried out pre-crystallization; When material was carried out pre-crystallization, pre-crystallization temperature was 120～125 ℃, and the temperature of heated drying air is 130～135 ℃, and air dew point is smaller or equal to-60 ℃, and material moisture is 30ppm, and be 8～10 hours drying time.
Step 2, the feeding of material screw: in PBT (polybutylene terephthalate) section feeding machine feeding screw extruder;
Step 3, filtration are filtered the mixture after the extruder extruding, guarantee the constant of continuous production spinning and screw extruder pressure when filtering; Pressure is smaller or equal to 16Mpa before filter during filtration, and constant compression force is 8.5Mpa in the filter process, and the screen pack of filter device therefor is 20 microns during filtration.
Step 4, spinning, the mixture after coming out from filter enters filament spinning component, sprays from spinnerets by filament spinning component; The spinneret orifice that sprays silk is circular spinneret orifice, the spinneret orifice draw ratio is 1: 3.5, described filament spinning component is 30/120/150/400/250/400/250/400 purpose screen pack, temperature during spinning is 260～280 ℃, spinning speed be 2700～2900 meters minute, the wind speed of cooling quench is 0.4～0.6m/s, and wind-warm syndrome is 23～25 ℃, and relative humidity is 70～80%.
Step 5, with the PBT silk through one section hot plate in the false twister, become spiral coil shape through heating distortion once, promptly form the PBT false-twist textured yarn.
The polymerization of PBT fiber, spinning, machining deformation production process route and ordinary polyester are basic identical, as long as transform a little, just can use the device fabrication PBT fiber of producing terylene.And the elasticity of PBT fiber is mainly determined by crimp shrinkage rate performance indications, the elasticity height that shrinkage factor is high, on the contrary elasticity is low, and what elasticity was high is false-twist textured yarn, and what elasticity was low then is low-stretch yarn.The present invention can be applicable to polyamide fibre or polypropylene fibre stretch shirt trousers, stretch socks, stretch swimming suit etc.
Below in conjunction with embodiment the present invention is done and to describe in further detail:
Embodiment 1
A kind of preparation method of PBT false-twist textured yarn may further comprise the steps:
Step 1, material is carried out pre-crystallization, described material is the PBT section; The concrete heated drying air that adopts is carried out pre-crystallization; When material was carried out pre-crystallization, pre-crystallization temperature was 120 ℃, and the temperature of heated drying air is 130 ℃, and air dew point is-60 ℃, and material moisture is 30ppm, and be 8 hours drying time.
Step 2, the feeding of material screw: in PBT (polybutylene terephthalate) section feeding machine feeding screw extruder;
Step 3, filtration are filtered the mixture after the extruder extruding, guarantee the constant of continuous production spinning and screw extruder pressure when filtering; Pressure is 16Mpa before filter during filtration, and constant compression force is 8.5Mpa in the filter process, and the screen pack of filter device therefor is 20 microns during filtration.
Step 4, spinning, the mixture after coming out from filter enters filament spinning component, sprays from spinnerets by filament spinning component; The spinneret orifice that sprays silk is circular spinneret orifice, the spinneret orifice draw ratio is 1: 3.5, described filament spinning component is 30/120/150/400/250/400/250/400 purpose screen pack, temperature during spinning is 260 ℃, spinning speed be 2700 meters minute, the wind speed of cooling quench is 0.4m/s, and wind-warm syndrome is 23 ℃, and relative humidity is 70%.
Step 5, with the PBT silk through one section hot plate in the false twister, become spiral coil shape through heating distortion once, promptly form the PBT false-twist textured yarn.
Embodiment 2
The preparation method of a kind of PBT false-twist textured yarn of the present invention may further comprise the steps:
Step 1, material is carried out pre-crystallization, described material is the PBT section; The concrete heated drying air that adopts is carried out pre-crystallization; When material was carried out pre-crystallization, pre-crystallization temperature was 125 ℃, and the temperature of heated drying air is 135 ℃, and air dew point is-55 ℃, and material moisture is 30ppm, and be 10 hours drying time.
Step 2, the feeding of material screw: in PBT (polybutylene terephthalate) section feeding machine feeding screw extruder;
Step 3, filtration are filtered the mixture after the extruder extruding, guarantee the constant of continuous production spinning and screw extruder pressure when filtering; Pressure is 15Mpa before filter during filtration, and constant compression force is 8.5Mpa in the filter process, and the screen pack of filter device therefor is 20 microns during filtration.
Step 4, spinning, the mixture after coming out from filter enters filament spinning component, sprays from spinnerets by filament spinning component; The spinneret orifice that sprays silk is circular spinneret orifice, the spinneret orifice draw ratio is 1: 3.5, described filament spinning component is 30/120/150/400/250/400/250/400 purpose screen pack, temperature during spinning is 280 ℃, spinning speed be 2900 meters minute, the wind speed of cooling quench is 0.6m/s, and wind-warm syndrome is 25 ℃, and relative humidity is 80%.
Step 5, with the PBT silk through one section hot plate in the false twister, become spiral coil shape through heating distortion once, promptly form the PBT false-twist textured yarn.
Embodiment 3
The preparation method of a kind of PBT false-twist textured yarn of the present invention may further comprise the steps:
Step 1, material is carried out pre-crystallization, described material is the PBT section; The concrete heated drying air that adopts is carried out pre-crystallization; When material was carried out pre-crystallization, pre-crystallization temperature was 123 ℃, and the temperature of heated drying air is 133 ℃, and air dew point is-58 ℃, and material moisture is 30ppm, and be 9 hours drying time.
Step 2, the feeding of material screw: in PBT (polybutylene terephthalate) section feeding machine feeding screw extruder;
Step 3, filtration are filtered the mixture after the extruder extruding, guarantee the constant of continuous production spinning and screw extruder pressure when filtering; Pressure is 13Mpa before filter during filtration, and constant compression force is 8.5Mpa in the filter process, and the screen pack of filter device therefor is 20 microns during filtration.
Step 4, spinning, the mixture after coming out from filter enters filament spinning component, sprays from spinnerets by filament spinning component; The spinneret orifice that sprays silk is circular spinneret orifice, the spinneret orifice draw ratio is 1: 3.5, described filament spinning component is 30/120/150/400/250/400/250/400 purpose screen pack, temperature during spinning is 270 ℃, spinning speed be 2800 meters minute, the wind speed of cooling quench is 0.5m/s, and wind-warm syndrome is 24 ℃, and relative humidity is 75%.
Step 5, with the PBT silk through one section hot plate in the false twister, become spiral coil shape through heating distortion once, promptly form the PBT false-twist textured yarn.
Claims (4)
1. the preparation method of a PBT false-twist textured yarn is characterized in that, may further comprise the steps:
Step 1, material is carried out pre-crystallization, described material is the PBT section; The concrete heated drying air that adopts is carried out pre-crystallization;
Step 2, material screw feeding: PBT is cut into slices in the feeding machine feeding screw extruder;
Step 3, filtration are filtered the mixture after the extruder extruding, guarantee the constant of continuous production spinning and screw extruder pressure when filtering;
Step 4, spinning, the mixture after coming out from filter enters filament spinning component, sprays from spinnerets by filament spinning component;
Step 5, with the PBT silk through one section hot plate in the false twister, become spiral coil shape through heating distortion once, promptly form the PBT false-twist textured yarn.
2. the preparation method of PBT false-twist textured yarn according to claim 1, it is characterized in that, when step 1 is carried out pre-crystallization with material, pre-crystallization temperature is 120～125 ℃, the temperature of heated drying air is 130～135 ℃, air dew point is smaller or equal to-60 ℃, and material moisture is 30ppm, and be 8～10 hours drying time.
3. the preparation method of PBT false-twist textured yarn according to claim 1 is characterized in that, pressure is smaller or equal to 16Mpa before the filter when step 3 is filtered, and constant compression force is 8.5Mpa in the filter process, and the screen pack of filter device therefor is 20 microns during filtration.
4. the preparation method of PBT false-twist textured yarn according to claim 1, it is characterized in that, the spinneret orifice that step 4 is sprayed silk is circular spinneret orifice, the spinneret orifice draw ratio is 1: 3.5, and described filament spinning component is 30/120/150/400/250/400/250/400 purpose screen pack, and the temperature during spinning is 260～280 ℃, spinning speed be 2700～2900 meters minute, the wind speed of cooling quench is 0.4～0.6m/s, and wind-warm syndrome is 23～25 ℃, and relative humidity is 70～80%.
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| CN200910262863A CN101760796A (en) | 2009-12-11 | 2009-12-11 | Preparing method of PBT false-twist textured yarns |
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| CN200910262863A CN101760796A (en) | 2009-12-11 | 2009-12-11 | Preparing method of PBT false-twist textured yarns |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104195653A (en) * | 2014-07-29 | 2014-12-10 | 中国石油化工股份有限公司 | PBT fiber manufacturing method based on high speed one-step method |
| CN104264251A (en) * | 2014-08-26 | 2015-01-07 | 江苏巨鸿超细纤维制造有限公司 | Dacron and chinlon composite spinning device |
| CN104824861A (en) * | 2015-05-12 | 2015-08-12 | 徐云友 | Health-care socks |
| CN105088390A (en) * | 2015-09-02 | 2015-11-25 | 太仓市宏亿化纤有限公司 | Preparation method of uniformly dyed PBT high stretch yarn |
| CN105088383A (en) * | 2015-09-02 | 2015-11-25 | 太仓市宏亿化纤有限公司 | PBT (polybutylene terephthalate) fiber production technology |
| CN105155005A (en) * | 2015-08-12 | 2015-12-16 | 张家港欣阳化纤有限公司 | Spinning screw rod extruder with filter |
| CN106498517A (en) * | 2015-09-07 | 2017-03-15 | 中国石化仪征化纤有限责任公司 | A kind of production method of PBT chopped fibers |
| CN108560080A (en) * | 2018-06-06 | 2018-09-21 | 杭州昌翔化纤新材料有限公司 | A kind of super-elasticity polyamide fibre core-skin fibre and its preparation and application |
| CN112064177A (en) * | 2020-08-28 | 2020-12-11 | 佛山市智布互联纺织有限公司 | Elastic double-sanitary-wear fabric and processing technology thereof |
-
2009
- 2009-12-11 CN CN200910262863A patent/CN101760796A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104195653A (en) * | 2014-07-29 | 2014-12-10 | 中国石油化工股份有限公司 | PBT fiber manufacturing method based on high speed one-step method |
| CN104264251A (en) * | 2014-08-26 | 2015-01-07 | 江苏巨鸿超细纤维制造有限公司 | Dacron and chinlon composite spinning device |
| CN104824861A (en) * | 2015-05-12 | 2015-08-12 | 徐云友 | Health-care socks |
| CN105155005A (en) * | 2015-08-12 | 2015-12-16 | 张家港欣阳化纤有限公司 | Spinning screw rod extruder with filter |
| CN105088390A (en) * | 2015-09-02 | 2015-11-25 | 太仓市宏亿化纤有限公司 | Preparation method of uniformly dyed PBT high stretch yarn |
| CN105088383A (en) * | 2015-09-02 | 2015-11-25 | 太仓市宏亿化纤有限公司 | PBT (polybutylene terephthalate) fiber production technology |
| CN106498517A (en) * | 2015-09-07 | 2017-03-15 | 中国石化仪征化纤有限责任公司 | A kind of production method of PBT chopped fibers |
| CN108560080A (en) * | 2018-06-06 | 2018-09-21 | 杭州昌翔化纤新材料有限公司 | A kind of super-elasticity polyamide fibre core-skin fibre and its preparation and application |
| CN112064177A (en) * | 2020-08-28 | 2020-12-11 | 佛山市智布互联纺织有限公司 | Elastic double-sanitary-wear fabric and processing technology thereof |
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Application publication date: 20100630 |