CN102505182B - Method for preparing functional ultraviolet-resistant polyester staple fiber from waste renewable polyester bottle chips - Google Patents
Method for preparing functional ultraviolet-resistant polyester staple fiber from waste renewable polyester bottle chips Download PDFInfo
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- CN102505182B CN102505182B CN2011102937509A CN201110293750A CN102505182B CN 102505182 B CN102505182 B CN 102505182B CN 2011102937509 A CN2011102937509 A CN 2011102937509A CN 201110293750 A CN201110293750 A CN 201110293750A CN 102505182 B CN102505182 B CN 102505182B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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Abstract
The invention discloses a method for preparing functional ultraviolet-resistant polyester staple fiber from waste renewable polyester bottle chips. The method comprises the following steps of: pre-treating and drying recovered waste renewable polyester bottle chips; drying ultraviolet-resistant polyester master batch; conveying the dried polyester bottle chips and ultraviolet-resistant polyester master batch into a special metering feeder to quantitatively feed and mix the polyester bottle chips and the ultraviolet-resistant polyester master batch to obtain a mixture; performing screw fusion extrusion on the mixed mixture with a certain concentration to obtain melt; filtering the melt, metering and spinning, cooling through circular blowing, winding and oiling, drawing and feeding, and holding filaments and falling into a barrel; bundling the filaments in the barrel; and performing oil water bath drawing and steam drawing, tense thermal forming, oiling, filament lamination, curling, loose thermal forming, cutting and packing to obtain an ultraviolet-resistant polyester staple fiber product. The method has the advantages of rational preparation process and high operability; and the product has lower cost than a new material and has good economic benefit and social benefit.
Description
technical field
The invention belongs to resource regeneration field and chemical fibre technology and manufacture field, specifically a kind of method of preparing functional ultraviolet-resistant polyester staple fiber from waste renewable polyester bottle chips.
background technology
The current world economy high speed development, the serious problems such as environmental pollution have also been brought, particularly the destruction of ozone layer is on the rise, the uitraviolet intensity that arrives ground obviously increases, ultraviolet ray is also just increasing to the injury of human body, long-term acceptance ultraviolet ray is irradiated, can reduce the organic molecule life-span, immune function of human body is descended, not only damage skin and cause the diseases such as dermatitis, freckle, erythema, and can promote eye illness, cause cataract, even cause the diseases such as cutaneum carcinoma, therefore how solving ultraviolet injury has become our problem demanding prompt solution.Raising along with living standards of the people, the textile application field is more and more extensive, and society is also more and more higher to the requirement of textiles, so improve the anti-ultraviolet property of textiles, to guaranteeing the health of people living safety, reduce the ultraviolet injury to human body and have great significance.
The uvioresistant fiber provided in the market is mainly to adopt general fibre to do surperficial uvioresistant processing to process, or adopting polyester fondant or polyester slice to add ultraviolet screening mother granule makes fiber, though the former is uvioresistant temporarily, but the time one is long, or can lose the uvioresistant effect after washing, and latter's uvioresistant effect is very good, belong to permanent ultraviolet protection, but because manufacturing cost is higher, affect significantly promoting the use of of this product, seriously restricted the application and development of uvioresistant polyester staple fiber in textile industry.
With bottle-grade polyester chip be that the products such as the serial bottle that makes of raw material, film, implements have that intensity is high, good brightness, lightweight, transparency good, be convenient to processing, dimensionally stable etc. plurality of advantages, therefore the global demand amount increases year by year, a large amount of uses along with products such as polyester bottles classes, because nearly all polyester bottles is all not biodegradable, their discarded object has become a large problem of environmental pollution that the whole world is serious.How Devoting Major Efforts To Developing PET bottle recovery and reutilization technology, process and rationally recycle the key issue that discarded regenerative polyester bottle has become the polyester industrial sustainable development better.Although people have also developed the method for some recyclings in recent years, also only be confined to the product of some low side types, such as the polyester bottle sheet material reclaiming, utilize traditional technique to change into the not harsh fiber-filled material of service condition, spunbond product etc.Be applied in uvioresistant requirement aspect reclaiming discarded regenerative piece of polyester bottle at present: such as all there is not report the aspects such as Work Clothes, outdoor travel articles for use, hospital's radiation protection, tent, parasol and commercial Application.
Summary of the invention
For addressing the above problem, a kind of method that the purpose of this invention is to provide preparing functional ultraviolet-resistant polyester staple fiber from waste renewable polyester bottle chips, the method has solved and has reclaimed discarded regenerative piece of polyester bottle because of the difficult problem that impurity is many, can't produce high-end fiber product, and this fiber has very excellent Study On The Radioprotective simultaneously.The method preparation technology is reasonable, workable, is easy to industrializing implementation; Alleviate the harm of discarded object to environment simultaneously, solved environmental protection problem, there is good economic benefit and social benefit.
The objective of the invention is to be achieved through the following technical solutions:
A kind of method of preparing functional ultraviolet-resistant polyester staple fiber from waste renewable polyester bottle chips is characterized in that the method comprises the following steps:
1) the discarded regenerative piece of polyester bottle reclaimed is carried out to preliminary treatment; The discarded regenerative piece of polyester bottle reclaimed is carried out to preliminary treatment to be comprised discarded regenerative piece of polyester bottle is sorted, pulverizes, cleans and dry, drying is that the bottle chips that will clean drops into the rotary-drum vacuum drying machine, logical 3～5kg steam or admittance deep fat in the rotary drum chuck, rotary drum slowly runs simultaneously, temperature keeps 130～160 ℃, start vavuum pump vacuumizes simultaneously, vacuum keep is at 0.06～0.10Mpa, 8～12 hours drying times, dried polyester bottle sheet material moisture is controlled at below 100PPm.
2) the uvioresistant dacron master grain being carried out to drying processes; The uvioresistant dacron master grain is carried out to drying to be processed, that the uvioresistant dacron master grain is put in seal silo, bin bottom passes into dried hot-air, temperature keeps 120～140 ℃, 10～12 hours drying times, dried uvioresistant dacron master grain moisture is controlled at below 60PPm.
3) will send into the metering feeding machine with the uvioresistant dacron master grain of processing through super-dry through pretreated polyester bottle slice and carry out weight feed and make it to mix mutually, obtain compound; Wherein the uvioresistant dacron master grain accounts for 3～8% of mixture total concentration; The pretreated polyester bottle sheet material of process is from metering feeding machine A aperture mistake, and the uvioresistant dacron master grain of processing through super-dry is from metering feeding machine B aperture mistake, quantitatively control by adjusting rotating speed, guarantee that the uvioresistant dacron master grain accounts for 3～8% of both mixture total concentrations.
4) compound mixed is carried out to the screw rod melt extruded, obtain melt, melt after filtration, metering spinning, ring quenching, reeling oils, draws feeding, contain the bucket that thread falls; When uvioresistant dacron master grain bottle chips enters the screw rod melt extruded, each district's temperature of screw rod is controlled between 260～310 ℃, the screw rod head pressure is controlled at 10～18Mpa, anti-ultraviolet polyester melt after melting enters fondant filter, the screen pack precision of filter is 120～250 orders, and the filtration gross area of filter is 4.5～12m
2, filter temperature is controlled at 260～290 ℃.
Melt is metered into spinning manifold through measuring pump from filter out, from spinnerets, extrudes precursor, and before spinning manifold, pressure remains on 4Mpa～6Mpa, and spinning body temperature remains on 260～290 ℃; The temperature of ring blowing is 15～32 ℃, and wind speed is 0.6～2 meter per second; Winding speed is 800～1200 m/mins.
5) silk in bucket is carried out to the boundling processing, through oil bath drawing-off and steam drafting, nervous HEAT SETTING, oil, folded silk, curling, relaxation heat setting, cut-out, packing, obtain uvioresistant polyester staple fiber product.Wherein, the tow by the gross after bucketful, passes through oil bath drawing-off bath, steam drafting, nervous HEAT SETTING, oils, folds silk, curling, relaxation heat setting according to the production requirement repiece at cluster area, cuts into the staple fibre of 38mm, 51mm, 65mm or 76mm length; Oil bath drawing-off bath temperature is 60～80 ℃, and the steam chest temperature is 90～120 ℃, and nervous heat setting temperature is 130～160 ℃, and the relaxation heat setting temperature is 120～150 ℃, and the time is 15～30 minutes.
In the present invention, obtain uvioresistant polyester staple fiber product
Make eventually and send into the special measuring feeding machine and carry out weight feed and make it to mix mutually, obtain compound, the total multiplying power of its first break draft is controlled at 3.5～4.5 times, and the fibre number of production is 2.6～2.8dtex, ultimate strength>=5.1cN/dtex
-1, elongation at break is 25～36%, average length is 38mm, 51mm, 65mm or 76mm, crispation number 10～13(.25mm
-1), oil content is 0.13～0.20%, 180 ℃ of dry-hot shrinkage≤6.5%, rate of ultraviolet shield>=90%, and the rate of ultraviolet shield of the uvioresistant polyester staple fiber of making, more than 90%, has excellent anti-ultraviolet function.
By above-mentioned technological process and method, adopt the method for preparing functional ultraviolet-resistant polyester staple fiber from waste renewable polyester bottle chips, the fiber product quality index that it spins out meets or exceeds the index of the former raw material of domestic and international polyester of the same trade, and therefore can substitute with the former raw material of polyester is the uvioresistant polyester staple fiber product that main raw material is produced by adding the uvioresistant dacron master grain.
Compared with prior art, because raw material of the present invention has adopted the recovery of wide material sources more than 90%, discard regenerative piece of polyester bottle, not only be conducive to environmental protection, also reduced production cost; And due to the viscosity of polyester bottle slice far above polyester fondant and section, the cost performance of its product is improved greatly, indices can not only reach the normal polyester fused mass directly spinning or polyester slice spins index, some indexs have also surpassed the former raw material spinning of normal polyester index.The present invention has good economic benefit and social benefit.
Preparation technology of the present invention is reasonable, workable, is easy to industrializing implementation; The product price is cheap, has promoted significantly promoting the use of in ultraviolet protection Xia road User Exploitation, has promoted the development of uvioresistant polyester staple fiber in weaving, clothes and industrial trade; Alleviate again in addition the harm of discarded object to environment, solved environmental protection problem, there is good economic benefit and social benefit.
The accompanying drawing explanation
Fig. 1 is process chart of the present invention.
The specific embodiment
A kind of method of preparing functional ultraviolet-resistant polyester staple fiber from waste renewable polyester bottle chips of the present invention, be shown in Fig. 1, at first to reclaiming discarded regenerative piece of polyester bottle, carries out preliminary treatment and drying.Preliminary treatment comprise to discarded regenerative piece of polyester bottle sorted, pulverized, after a series of raw material preparation such as cleaning, again the bottle chips of having cleaned is dropped into to the rotary-drum vacuum drying machine, after throwing honest material, logical 3～5kg steam or admittance deep fat in the rotary drum chuck, the rotary drum that simultaneously slowly runs, temperature keeps 130～160 ℃, start vavuum pump vacuumizes simultaneously, vacuum keep is at 0.06～0.10Mpa, and 8～12 hours drying times, dried bottle sheet moisture is controlled at below 100PPm.
The uvioresistant dacron master grain is carried out to drying processes simultaneously, that the uvioresistant dacron master grain is dropped in a large seal silo, bin bottom passes into dried hot-air, temperature keeps 120～140 ℃, 10～12 hours drying times, dried uvioresistant dacron master grain moisture is controlled at below 60PPm.
Afterwards dried polyester bottle sheet material and uvioresistant dacron master grain are sent into to the mixing of metering feeding machine, wherein by dried polyester bottle slice from special measuring feeding machine A aperture mistake, and dried uvioresistant dacron master grain is from special measuring feeding machine B aperture mistake, quantitatively control by adjusting rotating speed, guarantee that uvioresistant dacron master grain active ingredient accounts for 3～8% of both mixture total concentrations.
Again by drying with mix and there is certain density uvioresistant dacron master grain bottle chips and push fusing by screw extruder, give certain pressure simultaneously, obtain melt, each district's temperature of screw rod is controlled between 260～310 ℃, the screw rod head pressure is controlled at 10～18Mpa, polyester fondant after melting enters fondant filter, the screen pack precision of filter is 120～250 orders, and the filtration gross area of filter is 4.5～12m
2, filter temperature is controlled at 260～290 ℃.Polyester fondant after filtration enters spinning manifold again, by the measuring pump weight feed, keeps certain pressure simultaneously, enter assembly, then extrude precursor from spinnerets, the precursor of being extruded by spinnerets through the ring quenching, reel oil, draw feeding,
Contain the silk bucket that falls.
Finally the precursor in bucket is carried out the boundling processing, through profit bathe drawing-off and secondary steam drawing-off, nervous HEAT SETTING,
Oil, folded silk, curling, relaxation heat setting, cut-out, packing, can produce uvioresistant polyester staple fiber finished product.
Wherein, when implementing spinning process, must strictly control temperature and pressure: the spinning melt temperature remains on 260～290 ℃; Before spinning manifold, pressure remains on 4Mpa～6Mpa; The temperature of ring blowing is 15～32 ℃, and wind speed is 0.6～2 meter per second; Winding speed is 800～1200 m/mins; And after enforcement, spin in operation, oil bath drawing-off bath temperature is 60～80 ℃, and the steam chest temperature is 90～120 ℃, and nervous heat setting temperature is 130～160 ℃; The laxation shaping temperature is 120～150 ℃, and the time is 15～30 minutes; The staple fibre that shearing length is 38mm, 51mm, 65mm or 76mm.
The staple fibre of producing according to the present embodiment method spins thereafter the total multiplying power of drawing-off and is controlled at 3.5～4.5 times, and the fibre number of production is 2.6～2.8dtex, ultimate strength>=5.1cN/dtex
-1, elongation at break is 25～36%, average length is 38mm, 51mm, 65mm or 76mm, crispation number 10～13(.25mm
-1), oil content is 0.13～0.20%, 180 ℃ of dry-hot shrinkage≤6.5%, rate of ultraviolet shield>=90%, meet quality of finished product standard fully.
The rate of ultraviolet shield of the uvioresistant polyester staple fiber of finally making, more than 90%, has excellent anti-ultraviolet function.The product price that adopts the present invention to produce is cheap, does not have influence on again production, processing and the use of lower road consumer products, and has alleviated the harm of discarded object to environment, has solved environmental protection problem simultaneously.
Claims (1)
1. the method for a preparing functional ultraviolet-resistant polyester staple fiber from waste renewable polyester bottle chips is characterized in that the method comprises the following steps:
(1) carry out preliminary treatment to reclaiming the waste polyester bottle sheet:
Carry out preliminary treatment and comprise the waste polyester bottle sheet is sorted, pulverizes, cleans and dry reclaiming the waste polyester bottle sheet, described drying, that the bottle sheet of having cleaned is dropped into to the rotary-drum vacuum drying machine, after throwing honest material, logical 3～5kg steam or admittance deep fat in the rotary drum chuck, rotary drum slowly runs simultaneously, temperature keeps 130～160 ℃, starts vavuum pump simultaneously and vacuumizes, and vacuum keep is at 0.06～0.10MPa, 8～12 hours drying times, dried bottle sheet moisture is controlled at below 100ppm;
(2) the uvioresistant dacron master grain being carried out to drying processes:
The uvioresistant dacron master grain is carried out to drying to be processed, that the uvioresistant dacron master grain is dropped in seal silo, bin bottom passes into dried hot-air, temperature keeps 120～140 ℃, 10～12 hours drying times, dried uvioresistant dacron master grain moisture is controlled at below 60ppm;
(3) polyester bottle slice and uvioresistant dacron master grain that dried moisture is controlled at below 100ppm are sent into to the mixing of metering feeding machine, carry out weight feed, obtain compound, wherein the uvioresistant dacron master grain accounts for 3～8% of compound total concentration;
In step (3), dried polyester bottle slice is from metering feeding machine A aperture mistake, and dried uvioresistant dacron master grain is quantitatively controlled by adjusting rotating speed from metering feeding machine B aperture mistake, guarantee that uvioresistant dacron master grain active ingredient accounts for 3～8% of compound total concentration;
(4) compound mixed is carried out to the screw rod melt extruded and obtains melt, melt through filtering, metering spinning, ring quenching, reeling oils, draws feeding, contains the bucket that thread falls; When uvioresistant dacron master grain bottle chips enters the screw rod melt extruded, each district's temperature of screw rod is controlled between 260～310 ℃, the screw rod head pressure is controlled at 10～18MPa, anti-ultraviolet polyester melt after melting enters fondant filter, the screen pack precision of filter is 120～250 orders, and the filtration gross area of filter is 4.5～12m
2, filter temperature is controlled at 260～290 ℃; Melt is metered into spinning manifold through measuring pump from filter out, from spinnerets, extrudes precursor, and before spinning manifold, pressure remains on 4MPa～6MPa, and spinning body temperature remains on 260～290 ℃; The temperature of ring blowing is 15～32 ℃, and wind speed is 0.6～2 meter per second; Winding speed is 800～1200 m/mins;
(5) silk in bucket is carried out to the boundling processing, through oil bath drawing-off, steam drafting, nervous HEAT SETTING, oil, folded silk, curling, relaxation heat setting, cut-out, packing, obtain uvioresistant polyester staple fiber product;
In step (5), tow by the gross after bucketful at cluster area according to the production requirement repiece, oil bath drawing-off bath temperature is 60～80 ℃, the steam chest temperature is 90～120 ℃, nervous heat setting temperature is 130～160 ℃, the relaxation heat setting temperature is 120～150 ℃, and the relaxation heat setting time is 15～30 minutes, finally cuts into the staple fibre of 38mm, 51mm, 65mm or 76mm length.
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| CN2011102937509A CN102505182B (en) | 2011-09-28 | 2011-09-28 | Method for preparing functional ultraviolet-resistant polyester staple fiber from waste renewable polyester bottle chips |
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| CN2011102937509A CN102505182B (en) | 2011-09-28 | 2011-09-28 | Method for preparing functional ultraviolet-resistant polyester staple fiber from waste renewable polyester bottle chips |
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Effective date of registration: 20170522 Address after: 523525, Guangdong, Dongguan province Shiqiao Town Bridge Chang Road (continent section) No. 456 Patentee after: Dongguan Guangdong fiber products Co., Ltd. Address before: 210016 East Zhongshan Road, Jiangsu, Nanjing, China, 532-2 Patentee before: Nanjing Institute of Industry Technology |
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