CN102864511A - Method for producing hollow colored terylene pre-oriented filament yarn through recyclable polyester bottle pieces - Google Patents
Method for producing hollow colored terylene pre-oriented filament yarn through recyclable polyester bottle pieces Download PDFInfo
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Abstract
The invention discloses a method for producing hollow colored terylene pre-oriented filament yarn through recyclable polyester bottle pieces. The method comprises the following steps of: getting the recyclable polyester bottle pieces and colored master batch as main raw materials; extruding and melting the main raw materials through a screw extruder; filtering through a melt filter; spinning through a spinning head; cooling; pumping oil; and coiling and forming, so as to obtain a product similar to the hollow colored terylene pre-oriented filament yarn produced by primary polyester chip spinning; spinning holes of the adopted spinning plate are formed by combining C-shaped holes, which are arranged as a concentric circle; the C-shaped holes are same to a single fiber in quantity, and are span through the spinning holes, and the fiber processed by follow-up processes such as stretching and cooling has a circular hollowed section, and a hollow rate is not less than 5%. The product produced by the method disclosed by the invention meets a requirement of an FZ/T54003-93 standard; and the hollow colored terylene pre-oriented filament yarn produced by primary polyester can be replaced; and the filament yarn can be widely applied to producing clothing fabric and industrial fabric after being processed via a follow-up process.
Description
Technical field
The present invention relates to the method that a kind of polyester bottle slice that utilizes recovery is produced terylene pre-tropism continuous yarn, be specifically related to utilize the method for the polyester bottle slice production hollow colored terylene pre-tropism continuous yarn of recovery.
Background technology
At present, doughnut refers to that inside has the fiber of void structure, adopts the spinnerets spinning of special-shaped spinneret orifice to make.Be solid in the middle of spinneret orifice generally adopts, two " semicircles " or " C " type hole, after full-bodied polyester fondant high pressure is extruded during spinning, in the process that forms as-spun fibre, the expanded fibre wall that makes of melt is mutually bonding, and rapidly cooling curing forms hollow, makes through drawing-off and HEAT SETTING and takes doughnut, it has the characteristics such as resilience, bulkiness and high heat-retention, all has broad application prospects in fields such as sportswear, women's dress, underwear, T-shirts.The processing but conventional shaped filaments fabric need dye usually easily to environment, thereby can not be satisfied the demand of domestic and international market.At present, state inner facing material manufacturing enterprise has higher requirement to the special-shaped continuous yarn product of reclaimed polyester bottle sheet stock spinning, comprising: the 1. special-shaped polyester filament yarn product of spinning suction, hydrophobic performance are eager to excel; 2. the special-shaped polyester filament yarn product of spinning need not to dye again, realizes environmental friendliness; 3. the special-shaped colored terylene filament material of spinning will have soft feel, capillary effect, gas permeability and the bulkiness of natural fabric, and it is large that elasticity is wanted.In addition, because reclaimed polyester bottle sheet stock volume is large, light specific gravity, the problems such as shortcut often appear in its dry run putting up a bridge, adsorbing, walk in the tower.
China spins at the polyester bottle sheet material that utilize to reclaim at present and still is in the starting stage aspect the research and development of special polyester polyester filament application technology, compares with foreign technology still to have big gap.Although the report that utilizes polyester bottle sheet material to spin the special-shaped polyester filament yarn production method was once arranged in recent years, but only be confined to some conventional products, for example adopt the polyester compound silk of the polyester bottle sheet material spinning that reclaims, and the polyester bottle sheet material that adopt to reclaim spinning ten " the special polyester pre-tropism continuous yarn in font cross section; the said goods will after dyeing is processed, could be used for the production of color-woven fabric usually.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method of utilizing polyester bottle slice production hollow colored terylene preorientation (POY) long filament of recovery, production technology of the present invention is simple, control is stable, and the product fiber resilience that makes is good, warming effect is good, quality is slim and graceful, soft.
For solving the problems of the technologies described above, a kind of method of utilizing polyester bottle slice production hollow colored terylene preorientation (POY) long filament of recovery of the present invention may further comprise the steps:
(1) adopt inherent viscosity at the after testing qualified colourless recovery polyester bottle sheet material more than 0.68 as main production raw material, will detect first qualified reclaimed polyester bottle sheet stock and carry out pre-crystallizedly, pre-crystallized temperature is at 160-180 ℃, the time is 4-16h; Afterwards the reclaimed polyester bottle sheet stock after pre-crystallized is carried out drying, baking temperature is at 160-180 ℃, and the time is 3-4h, when the moisture content of reclaimed polyester bottle sheet stock finishes dry when 60ppm is following;
(2) Masterbatch is carried out heated-air drying, baking temperature is 120-150 ℃, and be 3-5h drying time; Then by means of continuous, gageable master batch feeding machine Masterbatch is fed in the screw extruder, evenly mixed with dried reclaimed polyester bottle sheet stock; Described Masterbatch weight is the 3-12% of reclaimed polyester bottle sheet stock gross weight; The screw slenderness ratio of described screw extruder is 38-48;
(3) with the reclaimed polyester bottle sheet stock, the Masterbatch heating and melting in screw extruder that mix, the polymer melt of heating and melting is behind screw extruding, and described screw extruding head pressure is controlled at 10-14MPa, and screw rod is respectively distinguished temperature and is controlled at 280-330 ℃;
(4) melt behind screw extruding enters online changeable fondant filter, and melt is carried out secondary filter, removes the impurity in the melt; Online changeable fondant filter adopts thick, smart two filtering techniques, and the screen pack precision of coarse filtration is the 150-350 order, and smart screen pack precision of filtering is the 300-400 order, and the Temperature Setting of filter is at 280-330 ℃;
(5) melt after filtering enters filament spinning component, is squeezed into silk from " C " font spinneret orifice of spinnerets, then pre-tropism continuous yarn press the speed coiling and molding of 3000-3300m/min, obtains cross section for justifying the pre-tropism continuous yarn of hollow, degree of hollowness 〉=5%; Pressure before the spinning manifold in the described filament spinning component remains on 4-5 MPa, and the temperature of spinning manifold is 260-298 ℃; The temperature of lateral blowing is 18-28 ℃, and wind speed is 0.2-1m/s, and lateral blowing length is 800-1500mm; Lateral blowing humidity is 70-85%, and oil applying rate is 0.5-0.7%.
Preferably, Masterbatch is the polyester Masterbatch described in the step (2).
Preferably, the Temperature Setting of step (4) middle filtrator is at 280-295 ℃.
Preferably, the temperature of spinning manifold is 280-298 ℃ in the step (5), and the temperature of lateral blowing is 20-28 ℃, and the wind speed of lateral blowing is 0.3-0.8 m/s, and lateral blowing length is 1000-1400mm; The spinneret orifice of spinning jet used " C " font is concentric circles to be arranged, and the quantity of spinneret orifice is identical with fibre single thread quantity.
Compared with prior art, the present invention has following beneficial effect:
First, by equipment of the present invention and production method, and the special spinning jet production hollow colored terylene pre-tropism continuous yarn of band " C " font spinneret orifice, after melt sprays from spinnerets " C " font spinneret orifice, according to expanded principle and melt rheology principle, form doughnut, and the shape of " C " font spinneret orifice assembled arrangement is exactly the global shape of strand cross section.
Second, be the hollow colored terylene pre-tropism continuous yarn of the spinnerets spinning of " C " by shape of spinneret, meet the FZ/T54003-93 standard-required, the hollow rate of doughnut is at 20-30%, thereby resilience, the warmth retention property of fiber have greatly been improved, its fiber, fabric need not dyeing, can be widely used in the production of taking fabric and industrial fabric, can be processed into the clothing fabric of the different purposes such as jacket, motion trousers, underwear, its fabric not only quality is slim and graceful, sliding suitable, warming sensation be can give, and special processing, Machine Washable and oven dry need not.
The 3rd, adopt online changeable fondant filter to filter, guarantee the constant of the continuous production of spinning and melt pressure; Adopt 2 grades of melt filters can effectively remove the impurity of too high levels in the reclaimed polyester bottle sheet stock, improved filter quality, prolonged the assembly life cycle, guaranteed the normal operation of spinning, promoted the quality of product.
The 4th, adopt reclaimed polyester bottle sheet production hollow colored terylene pre-tropism continuous yarn, alternative primary production of polyester hollow coloured yarn, not only can increase reclaimed polyester bottle sheet (regenerative PET) in the market share in polyester filament field, replace to greatest extent the former raw material of PET, and, also can further enlarge the range of application of regenerative PET, effectively economize on resources, this not only adapts with the production structure of China labor-intensive production, and it is low to adopt reclaimed polyester bottle sheet stock production hollow colored terylene pre-tropism continuous yarn to drop into, and output is fast, and therefore good economic and social benefits and vast potential for future development are arranged.
The 5th, the equipment drying tower that adopts in the drying process, the reducing form is adopted on its profile top, its inner tip has increased by 3 leg-of-mutton cones, therefore successfully solve continuously in the bottle sheet dry run owing to put up a bridge, adsorb, walk the bad phenomenon such as shortcut in the drying tower that its bottle sheet volume is large, light specific gravity brings, strengthen drying effect, guarantee the normal stable operation of spinning.
The specific embodiment
Embodiment 1
A kind of method of utilizing polyester bottle slice production hollow colored terylene preorientation (POY) long filament of recovery may further comprise the steps:
1, pre-crystallized, dry: adopt inherent viscosity at the after testing qualified colourless recovery polyester bottle sheet material more than 0.68 as main production raw material, to detect first qualified reclaimed polyester bottle sheet stock carries out pre-crystallized, the reclaimed polyester bottle sheet stock is transported in the ebullated bed formula pre-crystallizer, the ebullated bed bottom has aperture vertically a large amount of or that tilt, heated dry air is blown into by aperture, make the boiling of reclaimed polyester bottle sheet stock reach pre-crystallized effect, pre-crystallized temperature is at 160-180 ℃, and the time is 4-16h.The reclaimed polyester bottle sheet stock is transported to drying tower after pre-crystallized, heated dry air enters at the bottom of tower, and the reclaimed polyester bottle sheet stock is carried out drying, and baking temperature is at 160-180 ℃, and the time is 3-4h.The reclaimed polyester bottle sheet stock that takes a morsel carries out moisture content and detects, and moisture content is below 60ppm, and namely drying is finished; If moisture content is more than 60ppm, subject to the foregoing, proper extension drying time is until moisture content is below 60ppm.Drying equipment for the production of above-mentioned tubular filament is reuse bottle sheet pre-crystallizer and drying tower.The reducing form is adopted on drying tower profile top, and inner tip has increased by 3 leg-of-mutton cones.
2, Masterbatch feeding: Masterbatch is carried out heated-air drying, and baking temperature is 120-150 ℃, and be 3-5h drying time; Then by means of continuous, gageable master batch feeding machine Masterbatch is fed in the screw extruder, evenly mixed with dried reclaimed polyester bottle sheet stock; Described Masterbatch weight is the 3-12% of reclaimed polyester bottle sheet stock gross weight; The screw slenderness ratio of described screw extruder is 38-48.Masterbatch is the polyester Masterbatch, buys by market.The Masterbatch that adopts and reclaimed polyester bottle sheet stock compatibility performance are fine.Can be according to the production requirement, in screw extruder feeding reclaimed polyester bottle sheet stock, by another feeding unit feeding Masterbatch.The feeding method of reclaimed polyester bottle sheet stock can be through in the special spout feeding screw extruder, and the feeding method of same Masterbatch can be by means of in continuous, the gageable machine which is fed on color grain feeding screw extruder.
3, extruding: with reclaimed polyester bottle sheet stock, the Masterbatch heating and melting in screw extruder that mixes, the polymer melt of heating and melting is behind screw extruding, described screw extruding head pressure is controlled at 10-14MPa, and screw rod is respectively distinguished temperature and is controlled at 280-330 ℃.
4, filter: the melt behind screw extruding enters online changeable fondant filter, and melt is carried out secondary filter, removes the impurity in the melt; Online changeable fondant filter adopts thick, smart two filtering techniques, and the screen pack precision of coarse filtration is the 150-350 order, and smart screen pack precision of filtering is the 300-400 order, and the Temperature Setting of filter is at 280-330 ℃.
5, spinning: the melt after the filtration enters filament spinning component, is squeezed into silk from " C " font spinneret orifice of spinnerets, then pre-tropism continuous yarn is pressed the speed coiling and molding of 3000-3300m/min, obtains cross section and is the pre-tropism continuous yarn of circle hollow, degree of hollowness 〉=5%.Pressure before the spinning manifold in the described filament spinning component remains on 4-5 MPa, and the temperature of spinning manifold is 260-298 ℃; The temperature of lateral blowing is 18-28 ℃, and wind speed is 0.2-1m/s, and lateral blowing length is 800-1500mm; Lateral blowing humidity is 70-85%, and oil applying rate is 0.5-0.7%.Completely rolling up weight is 12kg, and full-rolling rate is 92%.Device for spinning is provided with the interlocking pressure feedback system between the pressure and screw speed and feeding system after the melt filter, melt squeeze pressure fluctuation range can be controlled at ± 1.5pa within.
Preferably, the Temperature Setting of filter described in the step (4) is at 280-295 ℃.
Preferably, the temperature of spinning manifold is 280-298 ℃ described in the step (5), and the temperature of lateral blowing is 20-28 ℃, and the wind speed of lateral blowing is 0.3-0.8 m/s, and lateral blowing length is 1000-1400mm; The spinneret orifice of " C " font of described spinnerets is concentric circles to be arranged, and the quantity of spinneret orifice is identical with fibre single thread quantity.
Embodiment 2
This embodiment is for producing the production method of 278dtex/96f hollow colored terylene pre-oriented yarn, its production technology is as follows: the employing inherent viscosity is 0.7 reclaimed polyester bottle sheet stock (moisture content is at 40ppm) and polyester Masterbatch, and it is fed Φ 58mm in the lump, screw slenderness ratio (L/D) is in 48 the extruder, reclaimed polyester bottle sheet stock and the melting in screw extruder of polyester Masterbatch, (filtering accuracy is 25 μ m through the continuous filter filtration, melt pressure is 12Mpa before the filter, melt pressure is controlled at 10Mpa after the filter, melt temperature is 292 ℃) after, again through the gear pump metering, enter spinning manifold and carry out spinning, melt by " C " font spinneret orifice spinning on the spinnerets in Φ 100mm96 hole after, again through the lateral blowing cooling, the high-speed winding that oils is spun into 278dtex/96f hollow colored terylene pre-oriented yarn.The lateral blowing wind-warm syndrome is 21 ℃, and wind speed is 0.4m/s, and winding speed is 3200m/min, and the full volume weight of 278dtex/96f circle hollow colored terylene pre-oriented yarn is 12kg, and full-rolling rate is 92%, and the quality index of the hollow colored terylene pre-oriented yarn of production is:
Line density: the 278dtex/96f line density coefficient of variation: 1.05%
Fracture strength: the 2.26cN/dtex fracture strength coefficient of variation: 3.54%
Extension at break: the 124.7% extension at break coefficient of variation: 3.87%
Oil content: 0.35% degree of hollowness: 10%.
Embodiment 3
This embodiment is the production method of 268dtex/48f hollow colored terylene pre-oriented yarn kind, its production technology is as follows: the employing inherent viscosity is 0.80 reclaimed polyester bottle sheet stock (moisture content is at 50ppm) and polyester Masterbatch, and it is fed Φ 58mm in the lump, screw slenderness ratio (L/D) is in 48 the extruder, reclaimed polyester bottle sheet stock and the melting in screw extruder of polyester Masterbatch, (filtering accuracy is 25 μ m through the continuous filter filtration, melt pressure is 12Mpa before the filter, melt pressure is controlled at 10Mpa after the filter, melt temperature is 290 ℃) after, again through the gear pump metering, enter spinning manifold and carry out spinning, melt by " C " font spinneret orifice spinning on the spinnerets in Φ 100mm48 hole after, again through the lateral blowing cooling, the high-speed winding that oils is spun into 268dtex/48f hollow colored terylene pre-oriented yarn.The lateral blowing wind-warm syndrome is 20 ℃, and wind speed is 0.5m/s, and winding speed is 3000m/min, and the full volume weight of 268dtex/48f hollow colored terylene pre-oriented yarn is 12kg, and full-rolling rate is 93%, and the quality index of the round hollow colored terylene pre-oriented yarn of production is:
Line density: the 268dtex/48f line density coefficient of variation: 0.90%
Fracture strength: the 2.20cN/dtex fracture strength coefficient of variation: 3.3%
Extension at break: the 120.3% extension at break coefficient of variation: 4.12%
Oil content: 0.3% degree of hollowness: 〉=8%.
Claims (4)
1. a method of utilizing the polyester bottle slice production hollow colored terylene pre-tropism continuous yarn of recovery is characterized in that, may further comprise the steps:
(1) adopt inherent viscosity at the after testing qualified colourless recovery polyester bottle sheet material 0.68 or more as main production raw material, the qualified reclaimed polyester bottle sheet stock of detection is carried out pre-crystallized, pre-crystallized temperature is at 160-180 ℃, the pre-crystallized time is 4-16h; Afterwards the reclaimed polyester bottle sheet stock after pre-crystallized is carried out drying, baking temperature is at 160-180 ℃, and be 3-4h drying time, when the moisture content of reclaimed polyester bottle sheet stock finishes dry when 60ppm is following;
(2) Masterbatch is carried out heated-air drying, baking temperature is 120-150 ℃, and be 3-5h drying time; Then by means of continuous, gageable master batch feeding machine Masterbatch is fed in the screw extruder, evenly mixed with dried reclaimed polyester bottle sheet stock; Described Masterbatch weight is the 3-12% of reclaimed polyester bottle sheet stock gross weight; The screw slenderness ratio of described screw extruder is 38-48;
(3) with the reclaimed polyester bottle sheet stock, the Masterbatch heating and melting in screw extruder that mix, the polymer melt of heating and melting is behind screw extruding, and described screw extruding head pressure is controlled at 10-14MPa, and screw rod is respectively distinguished temperature and is controlled at 280-330 ℃;
(4) melt behind screw extruding enters online changeable fondant filter, online changeable fondant filter adopts thick, smart two filtering techniques, the screen pack precision of coarse filtration is the 150-350 order, and smart screen pack precision of filtering is the 300-400 order, and the Temperature Setting of filter is at 280-330 ℃;
(5) melt after filtering enters filament spinning component, is squeezed into silk from " C " font spinneret orifice of spinnerets, then pre-tropism continuous yarn press the speed coiling and molding of 3000-3300m/min, obtains cross section for justifying the pre-tropism continuous yarn of hollow, degree of hollowness 〉=5%; Pressure before the spinning manifold in the described filament spinning component remains on 4-5 MPa, and the temperature of spinning manifold is 260-298 ℃; The temperature of lateral blowing is 18-28 ℃, and wind speed is 0.2-1m/s, and lateral blowing length is 800-1500mm; Lateral blowing humidity is 70-85%, and oil applying rate is 0.5-0.7%.
2. the method for polyester bottle slice production hollow colored terylene preorientation (POY) long filament is reclaimed in utilization according to claim 1, and it is characterized in that: Masterbatch is the polyester Masterbatch described in the step (2).
3. the method for polyester bottle sheet material production hollow colored terylene preorientation (POY) long filament is reclaimed in utilization according to claim 1 and 2, and it is characterized in that: the Temperature Setting of filter is at 280-295 ℃ described in the step (4).
4. the method for polyester bottle slice production hollow colored terylene preorientation (POY) long filament is reclaimed in utilization according to claim 3, it is characterized in that: the temperature of spinning manifold is 280-298 ℃ described in the step (5), the temperature of lateral blowing is 20-28 ℃, the wind speed of lateral blowing is 0.3-0.8 m/s, and lateral blowing length is 1000-1400mm; The spinneret orifice of " C " font of described spinnerets is concentric circles to be arranged, and the quantity of spinneret orifice is identical with fibre single thread quantity.
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| CN103628152A (en) * | 2013-11-14 | 2014-03-12 | 苏州千色纺化纤有限公司 | Processing machine for producing textile yarns made of polyester fibers |
| CN106894161A (en) * | 2017-03-16 | 2017-06-27 | 福建省天连化纤织造有限公司 | The modified green beautiful core cloth formula of twill of one kind and preparation method |
| CN107338484A (en) * | 2016-08-25 | 2017-11-10 | 桐乡守敬应用技术研究院有限公司 | Polyester fiber melts spinning method |
| CN107904685A (en) * | 2017-12-27 | 2018-04-13 | 北京中丽制机工程技术有限公司 | A kind of spinning-drawing machine and method for producing 56 fiber of biomass polyamide |
| CN110229378A (en) * | 2019-05-20 | 2019-09-13 | 安徽东锦资源再生科技有限公司 | A kind of crystallizing and drying technique of Pillar recovery bottle chips |
| CN110670159A (en) * | 2019-09-30 | 2020-01-10 | 安徽农业大学 | Preparation process of high-moisture-absorption regenerated PET (polyethylene terephthalate) fiber filament |
| CN110983452A (en) * | 2019-12-19 | 2020-04-10 | 中山市东龙新材料有限公司 | Preparation method of black PET zipper monofilament |
| CN113122939A (en) * | 2021-03-19 | 2021-07-16 | 江苏永银化纤有限公司 | Preparation method of regenerated hollow yarn with moisture absorption and breathability and spinneret plate for production |
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| CN113122939A (en) * | 2021-03-19 | 2021-07-16 | 江苏永银化纤有限公司 | Preparation method of regenerated hollow yarn with moisture absorption and breathability and spinneret plate for production |
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Application publication date: 20130109 |