CN101476213B - Process for manufacturing regenerative PET spun bonded fabric - Google Patents
Process for manufacturing regenerative PET spun bonded fabric Download PDFInfo
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- CN101476213B CN101476213B CN 200910036982 CN200910036982A CN101476213B CN 101476213 B CN101476213 B CN 101476213B CN 200910036982 CN200910036982 CN 200910036982 CN 200910036982 A CN200910036982 A CN 200910036982A CN 101476213 B CN101476213 B CN 101476213B
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 230000001172 regenerating effect Effects 0.000 title claims description 4
- 239000004744 fabric Substances 0.000 title abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 23
- 238000009987 spinning Methods 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000005098 hot rolling Methods 0.000 claims abstract description 13
- 239000000428 dust Substances 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 239000004745 nonwoven fabric Substances 0.000 claims description 12
- 238000002425 crystallisation Methods 0.000 claims description 9
- 230000008025 crystallization Effects 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- 238000012856 packing Methods 0.000 claims description 8
- 230000008929 regeneration Effects 0.000 claims description 7
- 238000011069 regeneration method Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000013467 fragmentation Methods 0.000 claims description 4
- 238000006062 fragmentation reaction Methods 0.000 claims description 4
- 230000004927 fusion Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 230000029087 digestion Effects 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 abstract description 43
- 238000012545 processing Methods 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
- 230000000192 social effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 14
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 12
- 239000012634 fragment Substances 0.000 description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Landscapes
- Nonwoven Fabrics (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses a producing cloth technique by using recycled PET bottle being spunbonded hot rolled which includes steps as follows: (1) processing pre-treament to recycled PET bottle; (2) processing surface pre-crystal, removing dust by using cyclone separator and high temperature drying to the treated PET bottle; (3) feeding the dried PET bottle to a screw extruder for heating melting; (4) adjusting fused mass viscosity and melting point; (5) PET material with melt state passing through a fused mass filter and a spinning metering pump then feeding to a spinning box; (6) spinning; (7) cooling and drafting; (8) forming net hot rolling; (9) rolling cloth. The technique by using recycled waste PET rebirth for producing cloth can save in raw material cost and energy consumption in technique process, reduce productive cost of enterprise greatly, enhance rupture strength of polyester PET rebirth spunbonded hot rolled nonweaven cloth by technique control effectively; and recycle utilization of PET has important meaning for saving rare resource petroleum, and has good social effect.
Description
Technical field
The invention discloses a kind of process for manufacturing regenerative thermal-bonded spunbond nonwoven, be meant the technology of utilizing the waste PET bottle regeneration system cloth that reclaims especially.
Background technology
Polyester (PET) is that terephthalic acid (TPA) and ethylene glycol carry out the stable polymer that polymerization generates; Its molecular structure height symmetry; Has certain crystalline orientation ability; Thereby have higher film forming and become second nature, and non-degradable property is arranged, be widely used in packing, weaving, electronic apparatus shell or the like field.Because terephthalic acid (TPA) needs from oil, to refine processing, and oil belongs to non-renewable precious resources, therefore above-mentioned finished product uses new PET material manufacturing cost higher, and is unfavorable for energy conservation.
PET kind polyester material has non-degradable property, has also achieved the advantage of its reusable edible, and unnecessaryly utilizes terephthalic acid (TPA) and ethylene glycol polymerization again.Development and raising for example, utilize PET spun-bonded hot rolling non-woven fabric technology but the processing of present PET class material and recovery and utilization technology await.
Summary of the invention
Main purpose of the present invention is: 1, energy savings; Because the part composition needs from oil, to refine processing in polyester (PET) compound; And oil belongs to non-renewable precious resources; Therefore the recycling of polyester material has immeasurable effect for energy savings, has long-range economic benefit and social benefit; 2, reduce the enterprise production cost; 3, make full use of recovery polyester material characteristic, further increase the nonwoven fabric strength character that the spunbond polyester hot rolling forms through technology controlling and process.
Be the realization above-mentioned purpose, PET regeneration spun-bonded hot rolling non-woven fabric manufacture craft according to the invention, concrete steps are:
(1) the PET bottle that reclaims is handled in earlier stage, comprised and clean classification, fragmentation, thermophilic digestion, rinsing, oven dry and packing;
(2) the PET bottle sheet after the packing is transported to drying tower, continues to be blown into 160～180 ℃ heated dry air 3～4 hours, PET bottle sheet is carried out surface crystallization in advance, the dust removal of cyclonic separation method and high temperature drying;
(3) dried PET bottle sheet is sent into screw extruder, is heated to the fusion of PET bottle sheet,
(4) adopt temperature to control and add and squeeze out the PET particle after the water mode is regulated melt viscosity and fusing point;
(5) graininess PET material is dry once more through sending into spinning manifold behind fondant filter, the spinning pump;
(6) spinning;
(7) cooling drawing-off;
(8) become the net hot rolling;
(9) batching.
Concrete, surface described in the step (2) crystallization in advance adopts heated dry air being blown into from bottom to top crystallizing bed, is blown into time remaining 30～40 minutes, makes PET bottle sheet particle not stop to stir, and it is inner that temperature is able to reach bottle sheet particle.The said dry heated dry air that adopts is blown into drying tower from bottom to top, is blown into time remaining 110～130 minutes, and PET bottle sheet particle aridity requires to reach 600ppm～800ppm.Said heated dry air is 165 ℃ does not have oil, anhydrous air.
Adopt the pulsed gas flow mode of movement in the said step (2), at first further screen qualified bottle sheet and send into drying tower through reciprocating sieve.
Adopt temperature control in the said step (4) and add the water mode and regulate PET material fusing point and viscosity, the PET material viscosity after the fusion is controlled between the 0.53-0.61dl/g, and fusing point is controlled between 251 ℃-265 ℃, to guarantee the quality of finished fabric.Said screw extruder temperature is controlled at 165 ℃, and screw extruder configuration electric heater heats.Adopt the feeding amount of the high-order batch can control prime drying tower that has attemperator in the said step (3).
Spinning temperature is 320～330 ℃ in the said step (6).
Hot-rolled temperature is 250～260 ℃ in the said step (8).
The nonwoven fabric that technology according to the invention makes has high-tenacity, low-shrinkage, heat-resisting, good stability, air permeable waterproof, fire-retardant, acid and alkali-resistance, mothproof nontoxic, anti-ultraviolet excellent specific property.
The invention has the advantages that: at first whole recovery regeneration technology process does not produce any waste gas and wastes, and environment is not had any image; Moreover all accomplish from power consumption two aspects of cost of material and technical process to practice thrift, greatly reduce the production cost of enterprise; The present invention has simultaneously effectively strengthened the fracture strength of polyester (PET) regeneration spun-bonded hot rolling non-woven fabric through technology controlling and process, has optimized properties of product.
The specific embodiment
Below will combine the specific embodiment that the present invention is described in further detail for the ease of it will be appreciated by those skilled in the art that.
Nonwoven fabric manufacture craft according to the invention is to utilize the waste PET bottle that reclaims to form for the raw material processing and manufacturing, therefore, at first will handle the PET bottle that reclaims.This processing comprises cleans classification, fragmentation, thermophilic digestion, rinsing, oven dry and packing.
Cleaning the classification main purpose is that the surface impurity of bottle is removed, and such as silt, greasy dirt etc., removes its label for the bottle that label is arranged; Classification mainly is a bottle of removing the PVC material, and still the master is divided in manual work at present.At home, generally having accomplished classification work basically in salvage station, all is PET bottles more than 90% to cleaning the general of factory, here mainly is to remove some other possibly influence the foreign material of quality.
Fragmentation is divided into two parts, mainly adopts disintegrating machine to accomplish automatically.Cleaning the bottle sheet that sorted bottle breaks into 22 ~ 25mm, further be broken into the small pieces of 8 ~ 10mm after cleaning once more at first earlier.Adopt 85 ℃, the water boiling about 20 minutes of configuration washing agent then, use the clear water rinsing at last.Mainly the bottle cap of PE material is removed in the rinse cycle, the washing agent rinsing is clean, also have the clean label paper that is untreated in front on a small quantity.Fragment after the rinsing can be convenient to the back charge and discharge operations by the instructions for use packing after getting into drying machine drying.
Following process process of the present invention adopts automatic assembly line production, and the technology controlling and process of its production process is most important for the strength character of finished product nonwoven fabric.
At the automatic production line starting end; Adopt in the middle of the pulsed gas flow transport to be transported to crystallizing bed and drying tower, and in drying tower, be blown into 165 ℃ heated dry air PET bottle sheet is carried out surface crystallization in advance, the dust removal of cyclonic separation method and high temperature drying through the PET fragment of reciprocating sieve after with packing.
Said pulsed gas flow transport can clocklike be controlled delivery air, guarantees that conveyance conduit is smooth and easy, and makes the uniform particles suspension air indirect of PET bottle sheet play the effect of selecting materials.Reciprocating sieve concentrate to be removed the non-type debris particles coming of size through vibrations, and is reliable to guarantee fragment crystallization, drying process effect stability.
Said preparatory crystallization is that 165 ℃ of dry air being blown into from bottom to top through not having oil, no moisture is crystallizing bed; Debris particles coming is ceaselessly stirred; The time that is blown into approximately made temperature reach fragment inside in lasting 30～40 minutes as far as possible; Make the intermolecular marshalling of fragment consistent, for next step drying process lays the foundation.May have some dust or granule in the dry air that is blown into, these dust or granule can make the mutual adhesion of the fragment of advantages of good crystallization, are unfavorable for the removal of moisture, cause drying effect to descend.After the therefore preparatory crystallization, need to adopt the cyclonic separation blower fan that these dust or granule are removed.
Drying process is to adopt 165 ℃ of dry air that do not have oil, no moisture to be blown into drying tower from bottom to top equally; Fragment in the tower is stirred; Hot-air approximately was controlled at 110～130 minutes through the walking of the space of fragment drying time, and the moisture content of fragment is reduced between the 600ppm-800ppm.
It is screw extruder that dried PET bottle fragment is sent into next process, on the screw extruder shell, disposes electric heater, and heating makes PET bottle sheet to molten condition.Here use Electric heating to reach the purpose of energy-conserving and environment-protective.Between drying tower and screw extruder, also be provided with the high-order batch can that has attemperator, be furnished with high-order and low level level-sensing device in the batch can, be used to control the drying tower feeding amount of prime.
Described screw extruder has two-way inlet, and one for the PET fragment enters the mouth, and another is the sprue of additive such as Masterbatch.Screw extruder is divided into the multistage thermal treatment zone, can control separately for every section, and charging aperture partly is a low-temperature zone; Screw rod act as conveying, stirring and batch mixing, itself does not heat screw rod, screw jacket configuration electric heater; Heating and temperature control has preferable performance at 285 ℃ to guarantee finished fabric.
Send into spinning manifold behind the PET material process fondant filter of molten condition, the spinning pump.
The PET fragment mixes with additive; Behind the screw extruder heating and melting, become melt with certain viscosity; Need to be delivered to fondant filter and remove impurity,, increase the working time to guarantee not block in the spinning process hole of spinnerets through pipeline with heater.
The effect of spinning pump is that melt is carried at pipeline according to the pressure of technique initialization, guarantees the consistent in density of melt, thereby guarantees the steady and continuous of spinning process.
Spinning manifold is used for spinning technique.
Said box house is installed filament spinning component, and filament spinning component comprises distribution plate and spinnerets, and the aperture of spinnerets is generally 0.4mm, hole count be generally 3000～5000 holes/square metre, spinnerets length is generally 3600mm.Spinning manifold has heating function, and spinning temperature is controlled at 320～330 ℃, to guarantee the performance of finished fabric.
Melt is a molten condition through the spinnerets ejection back of spinning manifold; For needing certain wet or cold air, moulding as early as possible cools off; This operation makes air quantity, wind-warm syndrome and water capacity all blow to silk according to technique initialization through this device by a full automatic air conditioner control, makes the silk cooling.
The spun silk of above-mentioned operation receives the limited aperture of spinnerets, and is generally thicker, and about about 0.3mm, the silk that requires with system cloth differs greatly, and therefore needs further drawing-off.It is unit that system cloth standard silk adopts D, the weight in grams number that is defined as 9000 meters long filaments of D (DENIER), as 1D be exactly 9000 meters long silk weight be 1g, 2D is exactly 9000 meters long 2g, and system cloth to require thread be 1～3D.It is power that drafting system adopts the dustless anhydrous compressed air of nothing oil, and about 200 cubic metres of per minute air demand is about pressure 4bar (40,0000 handkerchief).
Becoming the net operation is that the silk after the drawing-off is adsorbed on the guipure by rule, forms lace curtaining, and aspirator and blower fan are set under the lace curtaining, is used for lace curtaining is delivered to the hot-rolling mill hot rolling.
The general pair roller hot-rolling mills that adopt of hot rolling, hot-rolled temperature is controlled between 250～260 degree.
Use lapper will roll the cloth that forms at last and roll, be convenient to follow-up transportation processing or use.
The strength character of below enumerating out waste PET material that the utilization of several kinds of different sizes the reclaims nonwoven fabric through technical process gained according to the invention and the nonwoven fabric that uses the PET virgin material to make by common technology is relatively:
In sum; The disclosed technology that must utilize the waste PET bottle regeneration system cloth of recovery of the present invention; Be that the inventor passes through the further investigation to former system cloth technology,, grope repeatedly to draw through long, lot of test; Not only energy-saving and cost-reducing; Especially in the invention key parameter data in discloseder technology controlling and process guaranteed that the finished fabric that makes has that PET virgin material or reclaimed materials use usually system cloth technology and the unexistent exceptional strength performance of nonwoven fabric, technical have an outstanding progress, should be creative.
Claims (3)
1. process for manufacturing regenerative thermal-bonded spunbond nonwoven, step is:
(1) the PET bottle that reclaims is handled in earlier stage, comprised and clean classification, fragmentation, thermophilic digestion, rinsing, oven dry and packing;
(2) the PET bottle sheet after the packing is adopted the pulsed gas flow mode of movement; At first further screen qualified bottle sheet and send into drying tower through reciprocating sieve; Continue to be blown into 160～180 ℃ heated dry air 3～4 hours, PET bottle sheet is carried out surface crystallization in advance, the dust removal of cyclonic separation method and drying; The preparatory crystallization in said surface adopts 165 ℃ nothing oil, anhydrous heated dry air being blown into from bottom to top crystallizing bed, is blown into time remaining 30～40 minutes; Said dry 165 ℃ nothing oil, the anhydrous heated dry air of adopting is blown into drying tower from bottom to top, is blown into time remaining 110～130 minutes, and PET bottle sheet particle aridity requires to reach 600ppm～800ppm;
(3) dried PET bottle sheet is sent into screw extruder, be heated to the fusion of PET bottle sheet; Wherein, adopt the high-order batch can that has attemperator to control the feeding amount of prime drying tower to screw extruder;
(4) adopt temperature control and add the water mode and regulate melt viscosity to 0.50～0.63dl/g, squeeze out the PET particle behind the fusing point to 245 ℃～265 ℃;
(5) graininess PET material is dry once more through sending into spinning manifold behind fondant filter, the spinning pump;
(6) spinning, spinning temperature are controlled at 320～330 ℃;
(7) become the net hot rolling, hot-rolled temperature is 250～260 ℃;
(8) cooling drawing-off;
(9) batching.
2. PET regeneration spun-bonded hot rolling non-woven fabric manufacture craft according to claim 1, it is characterized in that: screw extruder configuration electric heater heats in the said step (3), and heating and temperature control is at 285 ℃.
3. PET regeneration spun-bonded hot rolling non-woven fabric manufacture craft according to claim 2 is characterized in that: the PET material viscosity in the said step (4) after the fusion further is controlled between 0.53～0.61dl/g, and fusing point is controlled between 251 ℃-265 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910036982 CN101476213B (en) | 2009-01-20 | 2009-01-20 | Process for manufacturing regenerative PET spun bonded fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910036982 CN101476213B (en) | 2009-01-20 | 2009-01-20 | Process for manufacturing regenerative PET spun bonded fabric |
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| Publication Number | Publication Date |
|---|---|
| CN101476213A CN101476213A (en) | 2009-07-08 |
| CN101476213B true CN101476213B (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910036982 Expired - Fee Related CN101476213B (en) | 2009-01-20 | 2009-01-20 | Process for manufacturing regenerative PET spun bonded fabric |
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| CN101994163A (en) * | 2009-08-25 | 2011-03-30 | 扬州天富龙汽车内饰纤维有限公司 | Preparation method of regenerative colored polyester fiber |
| CN101831149A (en) * | 2010-04-26 | 2010-09-15 | 江苏新凯盛企业发展有限公司 | Preparation method of regenerative polyester bottle tablet for producing textile filament raw material |
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| CN102605558A (en) * | 2011-01-21 | 2012-07-25 | 德泛企业股份有限公司 | Non-woven Fabric Production Method Using Recycled Waste as Material |
| CN102505177B (en) * | 2011-11-09 | 2014-04-16 | 福建鑫华股份有限公司 | Method for preparing mixed regenerated polyester fibers special for non-woven material |
| JP5935327B2 (en) * | 2012-01-11 | 2016-06-15 | 東洋紡株式会社 | Non-woven for Cairo |
| CN103374791A (en) * | 2013-07-19 | 2013-10-30 | 广东树业环保科技股份有限公司 | Process for manufacturing non-woven fabric by waste PET (polyethylene terephthalate) |
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| CN106192033B (en) * | 2016-08-31 | 2018-08-21 | 杭州海科纤维有限公司 | A method of cross Porous hollow staple fiber is spinned using returnable bottle piece |
| CN106367839B (en) * | 2016-08-31 | 2018-08-21 | 杭州海科纤维有限公司 | A kind of preparation method producing flame retardant polyester fiber using returnable bottle piece |
| CN107696433A (en) * | 2017-08-21 | 2018-02-16 | 佛山华新恒丰聚酯包装有限公司 | Reworked material PET expects injection method |
| CN108570763A (en) * | 2018-05-11 | 2018-09-25 | 杨杰 | A kind of cable production Non-woven fabric offcut recycling processing technology |
| CN108611766A (en) * | 2018-06-04 | 2018-10-02 | 大连华阳新材料科技股份有限公司 | A kind of spunbond tablet non-woven cloth slit drawing-off production method |
| US11268212B2 (en) | 2020-02-13 | 2022-03-08 | Arun Agarwal | Partially oriented yarn (POY) generation using polyethylene terephthalate (PET) bottle flakes |
| CN112609446A (en) * | 2020-12-04 | 2021-04-06 | 江阴市华思诚无纺布有限公司 | A recycling system for non-woven fabrics |
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