CN105350097B - A kind of method that the super thick flat recycled polyester long filament of denier is produced using regenerative piece of polyester bottle - Google Patents
A kind of method that the super thick flat recycled polyester long filament of denier is produced using regenerative piece of polyester bottle Download PDFInfo
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- CN105350097B CN105350097B CN201510636590.1A CN201510636590A CN105350097B CN 105350097 B CN105350097 B CN 105350097B CN 201510636590 A CN201510636590 A CN 201510636590A CN 105350097 B CN105350097 B CN 105350097B
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D13/00—Complete machines for producing artificial threads
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/06—Feeding liquid to the spinning head
- D01D1/09—Control of pressure, temperature or feeding rate
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
- D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
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- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
Abstract
The present invention relates to a kind of method that the super thick flat recycled polyester long filament of denier is produced using regenerative piece of polyester bottle.There is presently no a kind of production method that super thick denier recycled polyester FDY flat filaments are produced using regenerative piece of polyester bottle.It is characteristic of the invention that：Step is as follows：1）The discarded regenerative polyester bottle of recovery is pre-processed to obtain polyester bottle slice；2）Polyester bottle slice by pretreatment is handled by low-temperature vacuum drying；3）Dried polyester bottle slice is oiled by screw rod melt extruded, primary filter, secondary filtration, measuring pump, spinning manifold, filament spinning component, ring wind quenching, boundling successively, drafting forming and winding doffing, obtain finished product.The present invention solves the technical bottleneck that super thick denier recycled polyester FDY flat filaments are produced using regenerative piece of polyester bottle, and the super thick flat recycled polyester long filament of denier for producing to obtain using regenerative piece of polyester bottle has the performances such as superior bulkiness, anti pilling, easy dyeing.
Description
Technical field
The present invention relates to a kind of method that the super thick flat recycled polyester long filament of denier is produced using regenerative piece of polyester bottle, belong to spinning
Knit chemical fibre field.
Background technology
Polyethylene terephthalate（Abbreviation polyester, PET）It is a kind of hemicrystalline high polymer material, available for weaving
With the field such as plastics, because of its good physical and mechanical properties and ripe processing technology, therefore PET has turned into the world using most
Extensively, the maximum high polymer material of yield.The product such as serial bottle, film, implements made from bottle-grade polyester chip is raw material has
There are intensity height, good brightness, in light weight, transparency is good, is easy to many advantages, such as processing, dimensionally stable etc., therefore global demand amount
Increase year by year.With a large amount of uses of the products such as polyester bottles class, waste polyester bottle also becomes one because it is not biodegradable
Individual serious global problem of environmental pollution.The developed countries and regions such as Europe, the U.S., Japan are ground since the 1960s is
Study carefully the recycling problem of waste polyester, still remain technological precedence or even monopoly position so far.China's Eleventh Five-Year Plan system
Also the objectives and tasks of Devoting Major Efforts To Developing PET bottle recovery and reutilization technology have clearly been proposed since fixed.
How preferably to handle and rationally recycle discarded regenerative polyester bottle to have become polyester industrial sustainable development
Key issue.At present, polyester recovery main application have regenerated fiber, regeneration bottle, chemical recovering method raw material, engineering plastics,
Plastic-steel belt, film, sheet material etc..Only so that polyester regenerates spinning as an example, compared with primary polyester fiber, 1 ton of recycled polyester is often produced
Fiber, 3 tons of oil can be saved, reduce by 21 tons of CO2 emissions, it is seen that Waste Polyester is reclaimed and reprocessed to energy-saving and emission-reduction
Effect is very considerable.Although people carry out the exploitation progress of spinning using waste and old polyester bottle through regeneration treatment in recent years
Also relatively success, but be also limited only to the product of some low side types is obtained, such as the polyester bottle sheet material of recovery is utilized traditional
Technique changes into the not harsh short fine, conventional fibre of use condition and spunbond product etc.；And for example publication date is 09 month 2010 15
Day, in Publication No. CN101831149A Chinese patent, disclose a kind of recycled polyester for being used to produce textile filament raw material
The preparation method of bottle piece, raw material preparations, sorting, label removing, once shearing, crushing, steaming, clearly are included the step of the preparation method
Wash, dehydrate, separating twice and sieving, the preparation method can make the content of the impurity of the regenerative piece of polyester bottle in prior art
0.02% is dropped to less than by 2%, and does not contain polyester powder, so as to avoid breaking end in spinning process and avoid knitting
There is stiff silk and cross road in thing, and product is also only used in the product of some low side types made from the preparation method.
But in fibre in differentiation field, it is flat to produce the especially super thick denier of Speciality Pet Fiber using reclaiming bottle piece
Technical bottleneck also be present in fiber.Flat filament is one kind in fibre in differentiation, has resistant and anti pilling, is easier to dye, can
The unique style of fabric and excellent performance are assigned, by the welcome of consumer.Flatness is weigh flat yarn quality one
Important indicator, refer to the length-width ratio of fibre section, flatness is too big, and the fabric woven feels like jelly；Flatness is too small, can reduce molten
Flow velocity of the body in duct, easily make single wire fracture, produce head, increase broken end and lousiness.The technique for influenceing product flatness
Condition mainly includes specification, the spinning body temperature of spinneret（Spinning temperature）Design and control, cooling condition set
Meter and control, the design of spinning speed and control, the selection of gather position etc..Ultra-coarse denier polyester filament yarn at present（Circular section）
（CN101831718A）, super thick denier chinlon filament（Circular section）（CN103184549A）, super thick denier viscose flat filament（Imitative fiber crops）
（CN101135067A）Production technology it has been reported that still to produce super thick denier recycled polyester FDY using regenerative piece of polyester bottle flat
Technical bottleneck also be present in terms of the production of flat long filament, be also seen in report without corresponding preparation method.
The content of the invention
The invention aims to solve to produce super thick denier recycled polyester FDY flat filaments using regenerative piece of polyester bottle
Technical bottleneck, and provide a kind of super using regenerative piece of polyester bottle production with performances such as superior bulkiness, anti pilling, easy dyeings
The method of the flat recycled polyester long filament of thick denier.The present invention is to current ultra-coarse denier polyester filament yarn（Circular cross-section）Process conditions are carried out
Optimal improvements, and using regenerative piece of polyester bottle through special process develop meet after road user require, the super thick denier of function admirable
Recycled polyester FDY flat filaments products.
Technical scheme is used by the present invention solves the above problems：This is flat using the super thick denier of regenerative piece of polyester bottle production
The characteristics of method of recycled polyester long filament, is：The step of methods described, is as follows：
1）The discarded regenerative polyester bottle of recovery is pre-processed to obtain polyester bottle slice；
2）Polyester bottle slice by pretreatment is handled by low-temperature vacuum drying；
3）By dried polyester bottle slice successively by screw rod melt extruded, primary filter, secondary filtration, measuring pump, spinning
Silk casing, filament spinning component, ring wind quenching, boundling oil, drafting forming and winding doffing, step 3）It is specific as follows：
Polyester bottle slice through drying process is obtained into polyester bottle slice melt through screw rod melt extruded, screw rod during screw rod melt extruded
The temperature control in each area is between 260 DEG C~320 DEG C；Improving screw rod, polyester bottle slice is not of uniform size and plot ratio is obvious not to overcome
The problem of being same as normal polyester section raw material, the draw ratio of screw rod is 25~35, and screw head is provided with for increasing mixing effect
The torpedo head or pin of energy, screw rod head Stress control is in 12~20Mpa；Polyester bottle slice melt filters into primary filter,
The screen pack precision of primary filter is 60~150 mesh, and filtration temperature is 255 DEG C~310 DEG C；Polyester bottles after primary filter
Piece melt filters into secondary filter, and the screen pack precision of secondary filter be 100~250 mesh, filtration temperature for 260 DEG C~
300 DEG C, the filtering gross area of secondary filter is 4.0~8.0m2；
Measuring pump of the polyester bottle slice melt through supercharging after filtering enters the spinning manifold with filament spinning component, spinning manifold
Preceding pressure is maintained at 4Mpa~6Mpa, and the temperature of spinning manifold is maintained at into 255 DEG C~300 DEG C；Filament spinning component include screen pack,
Sea sand, distribution plate, deflector, packing ring and the spinneret of different thicknesses, the spinneret orifice on spinneret are " one " character form structure, spinneret
The hole sectional dimension in hole is 1.5mm × 0.15mm~5.0mm × 0.40mm, and the hole depth of spinneret orifice is 0.5mm~1.5mm, spinneret
The number in hole is 8~24；Polyester bottle slice melt after spinneret sprays through ring wind quenching, the wind speed of ring blowing for 0.5~
1.5m/s, the temperature of ring blowing is 15~35 DEG C, and ring is dried by the way of outer-ring ventilation, using outer-ring ventilation to control fiber
Bar do, it is good to make that tow cooling is uniform, bar does homogeneous and dyeability；Collection spot oil apart from spinneret 120cm~200cm,
Boundling obtains tow after oiling；
The tow after boundling that oils carries out hot gas spring sizing, tow after the first hot-rolling and the second hot-rolling drawing-off, sizing, then
Enter network nozzle through the 3rd deflector roll, the temperature of the first hot-rolling and the second hot-rolling is respectively 90~120 DEG C and 170~190 DEG C, is led
Stretch than being 1.6~2.2；Tow after drafting forming is wound shaping, the winding speed of coiling and molding for 3000~
4500m/min, obtain the flat recycled polyester long filament of super thick denier.
The above-mentioned technical characteristic of the present invention forms an impartible entirety, it is impossible to by the above-mentioned technical characteristic of the present invention
Several parts are isolated into completely to treat, and the present invention is realized using the entire combination of these technical characteristics and utilizes recycled polyester simultaneously
The purpose of the super thick flat recycled polyester long filament of denier is made in bottle piece production, and the obtained super thick flat recycled polyester long filament of denier has
The performance of excellent bulkiness, anti-pilling and easy dyeing etc., the filament number of super thick denier recycled polyester flat silk fiber are
8dtex~20dtex, the flatness of fiber is 4.0~9.0, and the bar evenness of fiber is 1.0~2.0%, fibrous fracture intensity
For 3.8~5.0cN/dtex, elongation at break is 25%~40%.
Preferably, step 1 of the present invention）In, pretreatment is carried out including to regenerative polyester bottle to the regenerative polyester bottle of recovery
Sorted, crushed, being cleaned and rinsing process, wherein sorting process is that bottle is transported at sorting device, the sorting device
It is different according to the spectral signal of unlike material bottle, irradiated using infrared spectrum light beam and carry out sorting processing；Polyester after sorting
Bottle is crushed into disintegrating apparatus, obtains polyester bottle slice；Matting selects different cleaning sides according to the source of polyester bottles
Formula：For oil bottle, need to be cleaned repeatedly with stronger alkaline warm water；For beverage bottle, carried out using weak alkaline aqueous solution anti-
Multiple cleaning；Cleaned polyester bottle slice carries out predrying after rinsing again.
Preferably, step 2 of the present invention）In, action will be entered in predrying good polyester bottle slice input vacuum drying rotary drum
The capacity of state low temperature drying, wherein rotary drum is 2~6 tons；Logical steam or admittance deep fat in rotary drum chuck, 100 DEG C of temperature holding~
180℃；Rotary drum slowly runs and vacuumized simultaneously, 6~12 hours drying times, the moisture control of dried polyester bottle slice
System is in below 80ppm.
Preferably, step 3 of the present invention）In, each area's temperature control of screw rod during screw rod melt extruded 270 DEG C~
300 DEG C, the filtration temperature of primary filter is 260 DEG C~300 DEG C, and the filtration temperature of secondary filter is 265 DEG C~290 DEG C,
The temperature of spinning manifold is maintained at 265 DEG C~290 DEG C.
Preferably, step 3 of the present invention）In, the plate face internal diameter of spinneret is 70mm.
Preferably, step 3 of the present invention）In, because fiber is flat and relatively thick, it is dense that the finish that boundling oils need to be increased
Degree, causes fiber surface to damage, oil concentration 8-20%, the percentage is weight percentage to reduce friction.Oil concentration is
Refer in the finish emulsion that finish is configured to distilled water, finish accounts for the percentage of emulsion gross weight.Finish can be polyester FDY oil
Agent.
Preferably, the filament number of super thick denier recycled polyester flat silk fiber of the present invention is 8dtex~20dtex,
The flatness of fiber is 4.0~9.0, and the bar evenness of fiber is 1.0~2.0%, and fibrous fracture intensity is 3.8~5.0cN/
Dtex, elongation at break are 25%~40%.
Preferably, leading to steam or admittance deep fat in rotary drum chuck of the present invention, temperature is kept for 120 DEG C~170 DEG C.
Preferably, each area's temperature control of screw rod during screw rod melt extruded of the present invention is at 270 DEG C~285 DEG C, primary mistake
The filtration temperature of filter is 270 DEG C~280 DEG C, and the filtration temperature of secondary filter is 275 DEG C~285 DEG C, the temperature of spinning manifold
Degree is maintained at 270 DEG C~285 DEG C.
A kind of super thick flat recycled polyester long filament of denier, its feature are：It is made using method of the present invention.
The present invention compared with prior art, has advantages below and effect：1st, equipment is improved：Cut different from normal polyester
Piece, the sheet stock of the polyester bottle slice of regeneration is not of uniform size and bulk density is small, using usual manner charging can exist feed it is unstable,
The problems such as screw rod ring knot, efficiency is low, the present invention is improved to screw rod, including screw feed section（Spiral groove depth, pitch increase
Deng）, the improvement of the part such as melt zone, back-mixing section and draw ratio, the wherein draw ratio of screw rod is are increased to 25~35, and screw rod
Head increases torpedo head or pin, increase mixing efficiency so that spinnability is improved.2nd, the present invention is dried using ring
Technique, and solve the problems, such as that super coarse denier fiber is also easy to produce " skin-core " structure in spinning process by process modification.Due to list
Silk size is up to more than 8dtex, and melt is difficult to quickly cool down, and conventional air regulator cooling length can not meet super-thick denier polyester long filament
Spinning demand：If one-sided increase cooling wind speed, reduce wind-warm syndrome, super-thick denier polyester filament fiber can be cooled down because of surface it is fast,
Internal cooling is slow and produces " skin-core " structure, causes dry ribbon, dyeing, stretches the series of problems such as big that makes a variation by force, and due to interior
Outer cooling is irregular, causes super thick denier flat fiber length and width to shrink irregular, has a strong impact on the flatness and its uniformity of fiber, cause
The problems such as product quality declines and following process difficulty is big.Therefore, chilling temperature, cooling wind speed and boundling on oil drop selection
It is particularly critical.3rd, stable production process of the present invention, good product quality, domestic super thick denier recycled polyester FDY flat filaments be compensate for
The deficiency of production technology, improve the scientific and technological content and added value of China's recycled polyester raw material spinning.
Brief description of the drawings
Fig. 1 is the method for producing the super thick flat recycled polyester long filament of denier in the embodiment of the present invention using regenerative piece of polyester bottle
Process flow diagram.
Embodiment
Below in conjunction with the accompanying drawings and by embodiment, present disclosure is further illustrated.It should be appreciated that the reality of the present invention
Apply and be not limited to the following examples, any formal accommodation and/or change made to the present invention fall within this hair
Bright protection domain.In the present invention, if not refering in particular to, all equipment and raw material etc. are commercially available or the industry is commonly used
's.Method in following embodiments, it is the conventional method of this area unless otherwise instructed.
Embodiment 1.
As shown in figure 1, the method for the super thick flat recycled polyester long filament of denier is produced in the present embodiment using regenerative piece of polyester bottle
The step of it is as follows：By regenerative polyester bottle is sorted, broken, cleaning, after rinsing and the processing such as predrying, puts into vacuum drum,
130 DEG C of rotary drum temperature, dry 12h.Dried regenerative piece of polyester bottle is put into screw rod afterwards, screw slenderness ratio 25, spiral shell
The temperature of bar first to SECTOR-SEVEN is respectively 260 DEG C, 270 DEG C, 280 DEG C, 280 DEG C, 280 DEG C, 280 DEG C, 278 DEG C and 275 DEG C, spiral shell
Bar head pressure is 18Mpa.By polyester bottle slice melt through primary filter（Filtration temperature is 270 DEG C, and screen pack precision is 80 mesh）
Enter secondary filter afterwards, the wherein screen pack precision of secondary filter is 120 mesh, and filtration temperature is 280 DEG C, the mistake of filter
The filter gross area is 4.0m2.Polyester bottle slice melt after filtering enters spinning manifold through positive battery metering pump, and spinning body temperature is
283℃；Polyester bottle slice melt is through spinneret（Plate face internal diameter 70mm）On spinneret orifice extrusion, wherein spinneret orifice is shaped as " one "
Font, its mesopore section 1.5mm × 0.25mm, hole depth 0.5mm, i.e. spinneret orifice are flat rectangular-shape structure, spinneret orifice
Number is 24.The tow of spinneret orifice extrusion is cooled down by outer-ring ventilation, and the wind speed of ring blowing is 0.8m/s, and the temperature of ring blowing is
29℃.Tow carries out drawing-off winding after boundling oils, and the collection spot that oils is apart from spinneret 130cm, oil concentration 9%, the percentage
Than being weight percentage.Tow enters network nozzle through the 3rd deflector roll again through the first hot-rolling and the second hot-rolling drawing-off, sizing, and first
The temperature of hot-rolling and the second hot-rolling is respectively 90 DEG C and 170 DEG C.Draw ratio is 2.2；Winding speed is 3700m/min, is wound into
The flat recycled polyester long filament of super thick denier is obtained after type.After tested, the filament number of super thick denier recycled polyester FDY flat filaments is
9dtex, the flatness of fiber is 5.0, and the bar evenness of fiber is 1.5%, and fibrous fracture intensity is 3.6cN/dtex, fracture
Elongation is 22%.
Embodiment 2.
As shown in figure 1, the method for the super thick flat recycled polyester long filament of denier is produced in the present embodiment using regenerative piece of polyester bottle
The step of it is as follows：By regenerative polyester bottle is sorted, broken, cleaning, rinsing, after the processing such as predrying, puts into vacuum drum, turns
145 DEG C of temperature of drum, dries 10h.Dried regenerative piece of polyester bottle is put into screw rod afterwards, screw slenderness ratio 30, screw rod
First to the temperature of SECTOR-SEVEN be respectively 263 DEG C, 273 DEG C, 282 DEG C, 282 DEG C, 282 DEG C, 282 DEG C, 280 DEG C and 277 DEG C, screw rod
Head pressure is 17Mpa.By polyester bottle slice melt through primary filter（Filtration temperature is 272 DEG C, and screen pack precision is 100 mesh）Afterwards
Into secondary filter, the wherein screen pack precision of secondary filter is 170 mesh, and filtration temperature is 278 DEG C, the filtering of filter
The gross area is 5.0m2.Polyester bottle slice melt after filtering enters spinning manifold, spinning body temperature 280 through positive battery metering pump
℃；Polyester bottle slice melt is through spinneret（Plate face internal diameter 70mm）On spinneret orifice extrusion, wherein spinneret orifice is " one " font, wherein
Hole section 2.0mm × 0.25mm, hole depth 0.7mm, i.e. spinneret orifice are flat rectangular-shape structure, and the number of spinneret orifice is 16
It is individual.The tow of spinneret orifice extrusion is cooled down by outer-ring ventilation, and the wind speed of ring blowing is 1.0m/s, and the temperature of ring blowing is 25 DEG C.Silk
Beam carries out drawing-off winding after boundling oils, and the collection spot that oils is attached most importance to apart from spinneret 150cm, oil concentration 11%, the percentage
Measure percentage.Tow enters network nozzle, first, second hot-rolling temperature through the 3rd deflector roll again through first, second hot-rolling drawing-off, sizing
Degree is respectively 100 DEG C, 175 DEG C.Draw ratio is 1.8；Winding speed is 4000m/min, and it is flat that super thick denier is obtained after coiling and molding
Recycled polyester long filament.After tested, the filament number of super thick denier recycled polyester FDY flat filaments is 12dtex；The flatness of fiber
For 6.8；The bar evenness of fiber is 1.4%；Fibrous fracture intensity is 3.6cN/dtex；Elongation at break is 25%.
Embodiment 3.
As shown in figure 1, the method for the super thick flat recycled polyester long filament of denier is produced in the present embodiment using regenerative piece of polyester bottle
The step of it is as follows：By regenerative polyester bottle is sorted, broken, cleaning, rinsing, after the processing such as predrying, puts into vacuum drum, turns
160 DEG C of temperature of drum, dries 10h.Dried regenerative piece of polyester bottle is put into screw rod afterwards, screw slenderness ratio 30, screw rod
First to the temperature of SECTOR-SEVEN be respectively 265 DEG C, 275 DEG C, 284 DEG C, 284 DEG C, 284 DEG C, 284 DEG C, 282 DEG C and 280 DEG C, screw rod
Head pressure is 15Mpa, obtains polyester bottle slice melt.By polyester bottle slice melt through primary filter（Filtration temperature is 275 DEG C, mistake
Filter screen precision is 120 mesh）Enter secondary filter afterwards, the wherein screen pack precision of secondary filter is 200 mesh, and filtration temperature is
277 DEG C, the filtering gross area of filter is 7.0m2.Polyester bottle slice melt after filtering enters spinning manifold through positive battery metering pump,
Spinning body temperature is 276 DEG C；Polyester bottle slice melt is through spinneret（Plate face internal diameter 70mm）On spinneret orifice extrusion, wherein spinneret
Hole is " one " font, and its mesopore section 3.0mm × 0.30mm, hole depth 0.9mm, i.e. spinneret orifice are flat rectangular-shape structure,
The number of spinneret orifice is 12.The tow of spinneret orifice extrusion is cooled down by outer-ring ventilation, and the wind speed of ring blowing is 1.2m/s, and ring is dried
Temperature be 22 DEG C.Tow carries out drawing-off winding after boundling oils, and the collection spot that oils is apart from spinneret 175cm, i.e., by boundling
Upper oil drop is displaced downwardly between winding, and oil concentration 12%, the percentage is weight percentage.Tow through first, second hot-rolling drawing-off,
Sizing enters network nozzle through the 3rd deflector roll again, and first, second heat roller temperature is respectively 110 DEG C, 180 DEG C.Draw ratio is 1.6；
Winding speed is 4300m/min, and the flat recycled polyester long filament of super thick denier is obtained after coiling and molding.After tested, super thick denier regeneration is poly-
The filament number of ester FDY flat filaments is 16dtex；The flatness of fiber is 8.7；The bar evenness of fiber is 1.5%；Fiber
Fracture strength is 3.4cN/dtex；Elongation at break is 26%.
Embodiment 4.
As shown in figure 1, the method for the super thick flat recycled polyester long filament of denier is produced in the present embodiment using regenerative piece of polyester bottle
The step of it is as follows：By regenerative polyester bottle is sorted, broken, cleaning, rinsing, after the processing such as predrying, puts into vacuum drum, turns
170 DEG C of temperature of drum, dries 8h.Dried regenerative piece of polyester bottle is put into screw rod afterwards, screw slenderness ratio 35, screw rod
One to the temperature of SECTOR-SEVEN be respectively 265 DEG C, 275 DEG C, 285 DEG C, 285 DEG C, 285 DEG C, 285 DEG C, 282 DEG C and 280 DEG C, screw machine
Head pressure is 13Mpa.By polyester bottle slice melt through primary filter（Filtration temperature is 277 DEG C, and screen pack precision is 120 mesh）It is laggard
Enter secondary filter, the wherein screen pack precision of secondary filter is 250 mesh, and filtration temperature is 276 DEG C, and the filtering of filter is total
Area is 8.0m2.Polyester bottle slice melt after filtering enters spinning manifold through positive battery metering pump, and spinning body temperature is 274 DEG C；
Polyester bottle slice melt is through spinneret（Plate face internal diameter 70mm）On spinneret orifice extrusion, wherein spinneret orifice is " one " font, its mesopore
Section 4.0mm × 0.4mm, hole depth 1.2mm, i.e. spinneret orifice are flat rectangular-shape structure, and the number of spinneret orifice is 8.Spray
The tow of silk hole extrusion is cooled down by outer-ring ventilation, and the wind speed of ring blowing is 1.5m/s, and the temperature of ring blowing is 18 DEG C.Tow is through collection
Beam carries out drawing-off winding after oiling, and the collection spot that oils is weight percent apart from spinneret 200cm, oil concentration 13%, the percentage
Than.Tow enters network nozzle, first, second heat roller temperature difference through the 3rd deflector roll again through first, second hot-rolling drawing-off, sizing
For 120 DEG C, 190 DEG C.Draw ratio is 1.2；Winding speed is 4400m/min, and it is poly- that the flat regeneration of super thick denier is obtained after coiling and molding
Ester long filament.After tested, the filament number of super thick denier recycled polyester FDY flat filaments is 20dtex；The flatness of fiber is 8.1；
The bar evenness of fiber is 1.9%；Fibrous fracture intensity is 3.3cN/dtex；Elongation at break is 27%.
Embodiment 5.
As shown in figure 1, the method for the super thick flat recycled polyester long filament of denier is produced in the present embodiment using regenerative piece of polyester bottle
The step of it is as follows.
1）Raw materials for production used are discarded polyester bottles and/or bottle chips resin, to the discarded regenerative polyester bottle of recovery
And/or bottle chips resin is pre-processed.
2）Polyester bottle slice by pretreatment is handled by low-temperature vacuum drying.
3）By dried polyester bottle slice through screw rod melt extruded, primary filter, secondary filtration, measuring pump, spinning manifold,
Filament spinning component, ring wind quenching, boundling oil, drafting forming, winding doffing, obtain finished product.
Step 1）In, pretreatment is carried out including being sorted, being crushed, clearly to regenerative polyester bottle to the regenerative polyester bottle of recovery
The process such as wash, rinse, wherein sorting process is that bottle is transported at sorting device, the sorting device is according to unlike material bottle
Spectral signal is different, is irradiated using infrared spectrum light beam and carries out sorting processing；Polyester bottles after sorting are entered into disintegrating apparatus
Row crushes；Matting selects different cleaning ways according to the source of bottle：For oil bottle, need to be entered with stronger alkaline warm water
Row cleans repeatedly；For beverage bottle, cleaned repeatedly using weak alkaline aqueous solution.Cleaned bottle piece is laggard by rinsing again
Row is predrying.
Step 2）In, by predrying good bottle piece input vacuum drying rotary drum, enter Mobile state low temperature drying, wherein rotary drum
2~6 tons of capacity；Logical steam or admittance deep fat in rotary drum chuck, 100 DEG C~180 DEG C of temperature holding, preferably 120 DEG C~170
DEG C, more preferably 130 DEG C~160 DEG C；Rotary drum slowly runs and vacuumized simultaneously, 6~12 hours drying times, dried poly-
Ester bottle chips moisture is controlled in below 80ppm.
Step 3）In, the polyester bottle sheet material through drying process is existed through each area's temperature control of screw rod during screw rod melt extruded
Between 260 DEG C~320 DEG C, preferably 270 DEG C~300 DEG C, more preferably 270 DEG C~285 DEG C；In view of bottle chips it is not of uniform size and
Plot ratio differs markedly from conventional section raw material, and screw rod is improved, including feed zone（Spiral groove depth, pitch etc.）, melting
The part such as section, back-mixing section and draw ratio improves, and wherein the draw ratio of screw rod is 25~35, and screw head increase torpedo head or
Pin, increase mixing efficiency；Screw rod head Stress control is in 12~20Mpa.Regenerative piece of polyester bottle melt enters primary filter
Filtering, the screen pack precision of filter be 60~150 mesh, and filtration temperature is 255 DEG C~310 DEG C, preferably 260 DEG C~300 DEG C,
More preferably 270 DEG C~280 DEG C.Melt through primary filter filters into secondary filter, and the screen pack precision of filter is
100~250 mesh, filtration temperature are 260 DEG C~300 DEG C, preferably 265 DEG C~290 DEG C, more preferably 275 DEG C~285 DEG C；Cross
The filtering gross area of filter is 4.0~8.0m2。
Step 3）In, the melt after filtering enters spinning manifold through positive battery metering pump, and pressure is maintained at before spinning manifold
4Mpa~6Mpa, because filament number is up to more than 8dtex, melt is difficult to quickly cool down, so spinning temperature and ring need to be reduced
The temperature difference of border temperature, i.e., it need to suitably reduce spinning temperature.Spinning body temperature be maintained at 255 DEG C~300 DEG C, preferably 265
DEG C~290 DEG C, more preferably 270 DEG C~285 DEG C；Other filament spinning component includes different thicknesses sea sand, screen pack, distribution plate, led
Flowing plate, packing ring and spinneret, wherein the spinneret（Plate face internal diameter 70mm）On shape of spinneret be " one " font, wherein
Hole section 1.5mm~5.0mm × 0.15mm~0.40mm, hole depth 0.5mm~1.5mm, spinneret hole count 8~24.Melt is through spray
Filament plate blows after spraying through ring wind quenching, ring blowing for outer shroud, can preferably control the bar of fiber to do, so that tow cooling is equal
Even, bar does that homogeneous, dyeability is good.Because filament number is up to more than 8dtex, melt is difficult to quickly cool down, conventional air regulator
Cooling length can not meet the spinning demand of super-thick denier polyester long filament：If one-sided increase cooling wind speed, reduce wind-warm syndrome, super thick
Denier PFY fiber can cool down fast, internal cooling because of surface and produce " skin-core " structure slowly, cause ribbon to do, dye, be strong
Stretch variation and wait series of problems greatly, and because inside and outside cooling is irregular, cause super thick denier flat fiber length and width to shrink irregular, serious shadow
Ring fiber flatness and its uniformity, cause product quality decline and following process difficulty it is big the problems such as.Therefore, cooling temperature
The selection of oil drop is particularly critical on degree, cooling wind speed and boundling.Therefore, the present embodiment by ring blowing speed be preferably 0.5~
1.5m/s, ring blowing temperature is preferably 15~35 DEG C；Between oil drop is displaced downwardly to winding on boundling, that is, the collection spot that oils is apart from spinneret
Plate 120cm~200cm；And fiber is flat and relatively thick, need to increase oil concentration, reduces friction and causes fiber surface to damage.
Step 3）In, the tow after the boundling that oils carries out hot gas spring sizing, and tow is through first, second hot-rolling drawing-off, sizing
Enter network nozzle through the 3rd deflector roll again, first, second heat roller temperature is respectively 90~120 DEG C, 170~190 DEG C.Draw ratio is
1.6~2.2.The winding speed of coiling and molding is 3000~4500m/min.Obtained super thick denier recycled polyester flat silk fiber
Filament number is 8dtex~20dtex；The flatness of fiber is 4.0~9.0；The bar evenness of fiber is 1.0~2.0%；It is fine
Dimension fracture strength is 3.8~5.0cN/dtex；Elongation at break is 25%~40%.
The purpose of the present embodiment is to solve to produce super thick denier recycled polyester FDY flat filaments using regenerative piece of polyester bottle
Technical bottleneck, there is provided a kind of super thick denier recycled polyester FDY with the performance such as superior bulkiness, anti pilling, easy dyeing is flat
The manufacture method of flat long filament.The present embodiment is to current ultra-coarse denier polyester filament yarn（Circular cross-section）Process conditions, which optimize, to be changed
Enter, and using regenerative piece of polyester bottle, road user requires after special process develops satisfaction, the super thick denier of function admirable regenerates and gathered
Ester FDY flat filaments products.Its production process is more stable, and the super thick denier recycled polyester FDY flat filaments product matter produced
Measure, road processing request after the flatness of product, fracture strength, elongation at break, outward appearance, oil content etc. can meet, be one
Kind is with the high recycled polyester fibre in differentiation of added value.
Embodiment 6.
As shown in figure 1, the method for the super thick flat recycled polyester long filament of denier is produced in the present embodiment using regenerative piece of polyester bottle
The step of it is as follows.
1）The discarded regenerative polyester bottle of recovery is pre-processed to obtain polyester bottle slice.
Pretreatment is carried out including being sorted, crushing, cleaning and being rinsed to regenerative polyester bottle to the regenerative polyester bottle of recovery
Process, wherein sorting process is that bottle is transported at sorting device, the sorting device is according to the spectral signal of unlike material bottle
Difference, irradiated using infrared spectrum light beam and carry out sorting processing；Polyester bottles after sorting are crushed into disintegrating apparatus, are obtained
To polyester bottle slice；Matting selects different cleaning ways according to the source of polyester bottles：For oil bottle, stronger alkalescence need to be used
Warm water is cleaned repeatedly；For beverage bottle, cleaned repeatedly using weak alkaline aqueous solution；Cleaned polyester bottle slice passes through again
Cross rinsing after carry out it is predrying.
2）Polyester bottle slice by pretreatment is handled by low-temperature vacuum drying.
The capacity of Mobile state low temperature drying, wherein rotary drum will be entered in predrying good polyester bottle slice input vacuum drying rotary drum
For 2~6 tons；Lead to steam or admittance deep fat in rotary drum chuck, temperature is kept for 100 DEG C~180 DEG C, preferably 120 DEG C~170 DEG C；Together
When rotary drum slowly run and vacuumize, 6~12 hours drying times, dried polyester bottle slice moisture control exists
Below 80ppm.
3）By dried polyester bottle slice successively by screw rod melt extruded, primary filter, secondary filtration, measuring pump, spinning
Silk casing, filament spinning component, ring wind quenching, boundling oil, drafting forming and winding doffing, step 3）It is specific as follows.
A, the polyester bottle slice through drying process is obtained into polyester bottle slice melt through screw rod melt extruded, spiral shell during screw rod melt extruded
The temperature control in Gan Ge areas is preferably controlled in 270 DEG C~300 DEG C between 260 DEG C~320 DEG C, more preferably control 270 DEG C~
285℃；Improve screw rod with overcome polyester bottle slice not of uniform size and plot ratio differ markedly from normal polyester section raw material the problem of,
The draw ratio of screw rod is 25~35, and screw head is provided with torpedo head or pin for increasing mixing efficiency, screw rod head pressure
Power is controlled in 12~20Mpa；Polyester bottle slice melt filters into primary filter, the screen pack precision of primary filter for 60~
150 mesh, filtration temperature are 255 DEG C~310 DEG C, preferably 260 DEG C~300 DEG C, more preferably 270 DEG C~280 DEG C；Through primary mistake
Polyester bottle slice melt after filter filters into secondary filter, and the screen pack precision of secondary filter is 100~250 mesh, filtering
Temperature is 260 DEG C~300 DEG C, and preferably 265 DEG C~290 DEG C, more preferably 275 DEG C~285 DEG C, the filtering of secondary filter is total
Area is 4.0~8.0m2。
B, measuring pump of the polyester bottle slice melt through supercharging after filtering enters the spinning manifold with filament spinning component, manifold
Pressure is maintained at 4Mpa~6Mpa before body, and the temperature of spinning manifold is maintained at into 255 DEG C~300 DEG C, preferably remain in 265 DEG C~
290 DEG C, more preferably it is maintained at 270 DEG C~285 DEG C；Filament spinning component includes screen pack, the sea sand of different thicknesses, distribution plate, water conservancy diversion
Plate, packing ring and spinneret, the spinneret orifice on spinneret are " one " character form structure, the hole sectional dimension of spinneret orifice for 1.5mm ×
0.15mm~5.0mm × 0.40mm, the hole depth of spinneret orifice is 0.5mm~1.5mm, i.e., spinneret orifice is flat rectangular-shape knot
Structure, the number of spinneret orifice is 8~24；The plate face internal diameter of spinneret is usually 70mm.Polyester bottle slice melt sprays through spinneret
By ring wind quenching, the wind speed of ring blowing is 0.5~1.5m/s, and the temperature of ring blowing is 15~35 DEG C, and ring blowing uses outer
The mode of ring blowing, using outer-ring ventilation to control the bar of fiber to do, make that tow cooling is uniform, bar does homogeneous and dyeability
It is good；Collection spot oil apart from spinneret 120cm~200cm, boundling obtains tow after oiling.Because fiber is flat and relatively thick, need
The oil concentration that increasing boundling oils, causes fiber surface to damage to reduce friction, oil concentration 8-20%, and the percentage is
Percentage by weight.
C, the tow after boundling that oils carries out hot gas spring sizing, tow after the first hot-rolling and the second hot-rolling drawing-off, sizing,
Entering network nozzle through the 3rd deflector roll again, the temperature of the first hot-rolling and the second hot-rolling is respectively 90~120 DEG C and 170~190 DEG C,
Draw ratio is 1.6~2.2；Tow after drafting forming is wound shaping, and the winding speed of coiling and molding is 3000
~4500m/min, obtain the flat recycled polyester long filament of super thick denier.
Use the filament number of the super thick flat recycled polyester long filament of denier made from the method in the present embodiment for 8dtex~
20dtex, the flatness of fiber are 4.0~9.0, and the bar evenness of fiber is 1.0~2.0%, fibrous fracture intensity is 3.8~
5.0cN/dtex, elongation at break are 25%~40%.
By foregoing description, those skilled in the art can implement the present invention.
Above preferred embodiment is only intended to description and interpretation present disclosure, does not form the limit to present invention
System.Although inventor has done to the present invention and enumerated in more detail, those skilled in the art is according to the content of the invention
Content disclosed in part and embodiment, various modifications or/and supplement can be made to described specific embodiment or is adopted
To substitute it is obvious with similar mode, and the technique effect of the present invention can be realized, therefore, no longer repeats one by one herein.This
The term occurred in invention is used for elaboration and understanding to technical solution of the present invention, is not construed as limiting the invention.
Claims (6)
- A kind of 1. method that the super thick flat recycled polyester long filament of denier is produced using regenerative piece of polyester bottle, it is characterised in that：The side The step of method, is as follows：1）The discarded regenerative polyester bottle of recovery is pre-processed to obtain polyester bottle slice；2）Polyester bottle slice by pretreatment is handled by low-temperature vacuum drying；3）By dried polyester bottle slice successively by screw rod melt extruded, primary filter, secondary filtration, measuring pump, manifold Body, filament spinning component, ring wind quenching, boundling oil, drafting forming and winding doffing, step 3）It is specific as follows：Polyester bottle slice through drying process is obtained into polyester bottle slice melt through screw rod melt extruded, each area of screw rod during screw rod melt extruded Temperature control between 260 DEG C~320 DEG C；Screw rod is improved to overcome polyester bottle slice not of uniform size and plot ratio differs markedly from The problem of normal polyester section raw material, the draw ratio of screw rod is 25~35, and screw head is provided with for increasing mixing efficiency Torpedo head or pin, screw rod head Stress control is in 12~20Mpa；Polyester bottle slice melt filters into primary filter, primary The screen pack precision of filter is 60~150 mesh, and filtration temperature is 272 DEG C；Polyester bottle slice melt after primary filter enters Secondary filter filters, and the screen pack precision of secondary filter is 100~250 mesh, and filtration temperature is 278 DEG C, secondary filter The filtering gross area be 4.0~8.0m2；Measuring pump of the polyester bottle slice melt through supercharging after filtering enters the spinning manifold with filament spinning component, is pressed before spinning manifold Power is maintained at 4Mpa~6Mpa, and the temperature of spinning manifold is maintained at into 280 DEG C；Filament spinning component includes screen pack, different thicknesses Sea sand, distribution plate, deflector, packing ring and spinneret, the spinneret orifice on spinneret are " one " character form structure, its mesopore section 2.0mm × 0.25mm, hole depth 0.7mm, i.e. spinneret orifice are flat rectangular-shape structure, and the number of spinneret orifice is 16；Polyester Bottle piece melt is through ring wind quenching after spinneret sprays, and the wind speed of ring blowing is 1.5m/s, and the temperature of ring blowing is 35 DEG C, ring Blowing is by the way of outer-ring ventilation, using outer-ring ventilation to control the bar of fiber to do, make tow cooling is uniform, bar do it is homogeneous and Dyeability is good；Collection spot oil apart from spinneret 120cm~200cm, boundling obtains tow after oiling；The tow after boundling that oils carries out hot gas spring sizing, and tow is after the first hot-rolling and the second hot-rolling drawing-off, sizing, then through the Three deflector rolls enter network nozzle, and the temperature of the first hot-rolling and the second hot-rolling is respectively 120 DEG C and 190 DEG C, and draw ratio is 1.6~ 2.2；Tow after drafting forming is wound shaping, and the winding speed of coiling and molding is 4000m/min, obtains super thick denier Flat recycled polyester long filament；The draw ratio of screw rod is 25~35, and screw head increase torpedo head or pin, increase mixing efficiency so that spinnability obtains To improving；Step 2）In, the polyester bottle slice pre-processed is put into vacuum drying rotary drum and enters Mobile state low temperature drying, wherein rotary drum Capacity be 2~6 tons；Lead to steam or admittance deep fat in rotary drum chuck, temperature is kept for 100 DEG C~180 DEG C；Rotary drum low speed rotation simultaneously Move and vacuumize, 6~12 hours drying times, the moisture of dried polyester bottle slice is controlled in below 80ppm；The filament number of the super thick flat recycled polyester long filament of denier is 8dtex~20dtex, the flatness of long filament for 4.0~ 9.0, the bar evenness of long filament is 1.0~2.0%, and filament breakage intensity is 3.8~5.0cN/dtex, elongation at break 25% ~40%.
- 2. the method according to claim 1 that the super thick flat recycled polyester long filament of denier is produced using regenerative piece of polyester bottle, its It is characterised by：Step 1）In, the regenerative polyester bottle of recovery is carried out pretreatment include sorting regenerative polyester bottle, crush, Cleaning and rinsing process, wherein sorting process is that bottle is transported at sorting device, the sorting device is according to unlike material bottle Spectral signal it is different, irradiated using infrared spectrum light beam and carry out sorting processing；Polyester bottles after sorting enter disintegrating apparatus Crushed, obtain polyester bottle slice；Matting selects different cleaning ways according to the source of polyester bottles：For oil bottle, need Cleaned repeatedly with stronger alkaline warm water；For beverage bottle, cleaned repeatedly using weak alkaline aqueous solution；Cleaned Polyester bottle slice carries out predrying after rinsing again.
- 3. the method according to claim 1 or 2 that the super thick flat recycled polyester long filament of denier is produced using regenerative piece of polyester bottle, It is characterized in that：The step 3）In, the plate face internal diameter of spinneret is 70mm.
- 4. the method according to claim 1 or 2 that the super thick flat recycled polyester long filament of denier is produced using regenerative piece of polyester bottle, It is characterized in that：The step 3）In, because fiber is flat and relatively thick, the oil concentration that boundling oils need to be increased, is rubbed with reducing Wiping causes fiber surface to damage, and oil concentration 8-20%, the percentage is weight percentage.
- 5. the method according to claim 1 that the super thick flat recycled polyester long filament of denier is produced using regenerative piece of polyester bottle, its It is characterised by：Lead to steam or admittance deep fat in rotary drum chuck, temperature is kept for 120 DEG C~170 DEG C.
- A kind of 6. super thick flat recycled polyester long filament of denier, it is characterised in that：Using as described in claim 1-5 any claims Method be made.
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| CN111155196A (en) * | 2020-01-03 | 2020-05-15 | 浙江颖诺泰材料科技有限公司 | Luminescent fiber based on recycled polyester material and preparation method thereof |
| US11268212B2 (en) | 2020-02-13 | 2022-03-08 | Arun Agarwal | Partially oriented yarn (POY) generation using polyethylene terephthalate (PET) bottle flakes |
| CN111254505B (en) * | 2020-02-19 | 2021-10-08 | 江苏恒科新材料有限公司 | Super bright polyester fiber, spinneret plate for spinning same and preparation method thereof |
| 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 |
| CN113308758A (en) * | 2021-07-12 | 2021-08-27 | 苏州贤辉新纺织科技有限公司 | 8tex colored polyester staple fiber spinning recovery regeneration process method |
| CN114959942B (en) * | 2022-07-15 | 2023-02-28 | 浙江桐昆新材料研究院有限公司 | Antistatic anti-pilling moisture permeable heavy denier polyester drawn yarn and preparation method thereof |
| CN115961382B (en) * | 2022-12-30 | 2024-02-20 | 上海德福伦新材料科技有限公司 | Preparation method of cationic dye normal-pressure deep-dyeable heavy denier flat regenerated polyester fiber |
| CN115976667A (en) * | 2022-12-30 | 2023-04-18 | 上海德福伦新材料科技有限公司 | Preparation method of coarse-denier curl-free dumbbell-shaped full-dull polyester staple fiber |
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| CN101435113B (en) * | 2007-11-14 | 2010-10-13 | 山东阳信龙福生态科技有限公司 | Method for producing terylene POY filament in scale by recycling PET bottle sheet material |
| CN101503832A (en) * | 2008-09-16 | 2009-08-12 | 江苏盛虹化纤有限公司 | Processing method of high-shrinkage superfine denier polyester staple fibers |
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