CN103572391A - Spun polyester pre-oriented yarn production method using recycled polyester bottle chips - Google Patents
Spun polyester pre-oriented yarn production method using recycled polyester bottle chips Download PDFInfo
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Abstract
Disclosed is a spun polyester pre-oriented yarn production method using recycled polyester bottle chips. The method is characterized by including 1, breaking bottles; 2, washing bottle chips; 3, drying the bottle chips; 4, extruding through an exhaust screw and vacuumizing, namely feeding dried bottle chips into an exhaust screw port, controlling the heating temperature between 292 DEG C to 300 DEG C from 7 to 9 regions; allowing the bottle chips to produce vapor and PVC oil gas after being extruded and melted, vacuumizing at an opening in the middle segment of the screw, allowing the degree of vacuum to be smaller than 100 Pa, and performing secondary filtering; spinning; winding to form the spun polyester pre-oriented yarn. Through the application of the exhaust screw adaptable to the polyester pre-oriented yarn spun through bottle chips, on the basis of an original physical spinning method, influences on spinning by impurities such as moisture, PVC and oil can be eliminated; color yarns which have multiple ends and fine denier and which are porous are produced, quality and color are similar to those in native sliced spinning, and investment and operating cost are low; the method is initiative for polyester pre-oriented yarn spun using recycled polyester bottle chips worldwide, economical and applicable prospect is promising, and the entire process is more reasonable and practical.
Description
Technical field
The present invention relates to a kind of production method of spinning polyester preoriented yarn by reusing polyester bottle chip.
Background technology
China's reclaiming bottle piece spinning terylene pre-oriented fiber, mainly taking method is two kinds, i.e. Physical and chemical method.
Its Physical is that bottle sheet is directly used screw rod melt spinning after super-dry, the method is backward in technique, returnable bottle sheet institute's water content and PVC impurity cannot be removed in process of production, cannot make high-quality terylene pre-oriented fiber and bottle tablet quality and lot number are required to height, the high-end product difficulty such as look silk processed cannot be carried out greatly.
Chemical method is for alcoholysis polymerization, make strand evenly degree of spinning reach consistent requirement, and can remove in bottle sheet the impurity such as institute's water content and PVC, oils spinning is had to change, but its time of staying is long, color and luster is partially yellow, spin that the high-end product difficulty such as Se Si and thin dawn of porous bull are large and investment is large, equipment operating cost is highly difficult large.
The Chinese patent that is 200710071271.6 as the patent No. discloses a kind of utilization and has reclaimed the method that polyester bottles is produced terylene pre-tropism continuous yarn, and it at least comprises the following steps: 1) make polyester bottles bottle sheet; 2) bottle sheet is through pre-crystallizer and drying tower continuous crystallisation, dry; 3) the bottle sheet being dried directly enters screw extruder, by spinning screw, is melt extruded; 4) the polyester material of melting passes through the fondant filter continuous filtration of one-level or the large filter area of two-stage again, enters spinning manifold; 5) strand is cooling through lateral blowing, reels and forms pre-tropism continuous yarn.It is because adopt general screw extruder, so certainly will there is the defect of above-mentioned introduction;
Similar Problems also exists in 200610152509.3 Chinese patent.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of production method of spinning polyester preoriented yarn by reusing polyester bottle chip, it is on the basis of original logos spinning, can remove the impacts of impurity on spinning such as moisture content, PVC, oils, making Se Si and thin dawn of porous bull, quality and color and luster are very close with former raw slicers spinning, and it is low to invest little operating cost, economical and have a extensive future.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of production method of spinning polyester preoriented yarn by reusing polyester bottle chip, is characterized in that step is followed successively by:
(1) bottle brick is broken;
(2) bottle sheet cleans;
(3) bottle sheet is dry;
(4) steam discharge screw extruding and aspiration vacuum; Dried bottle sheet adds steam discharge screw rod mouth, and totally 7th～9 district (preferably 8th district) heating and temperature control is 292 ℃ ~ 300 ℃, and bottle sheet, after extrusion molten, produces steam and PVC oils gas, and in screw rod stage casing opening part aspiration vacuum, vacuum is less than 100Pa;
(5) cascade filtration;
(6) spinning;
(7) coiling and molding.
As preferably, in described spinning step, in manifold, through spinnerets, be extruded into silk, through side-blown bellows, the cooling tow dress that oils into; Spin manifold temperature is 285～295 ℃, and joining side blowing temperature is 20～24 ℃, and blowing temperature is 75～85 ℃, and oil applying rate is 0.3～0.4%, and wind speed is 0.4m/s ~ 0.6m/s, blowing length 1100～1300m.
Preferred again, in described spinning step, spin manifold temperature is 290 ℃, and joining side blowing temperature is 22 ℃, and blowing temperature is 80 ℃, and oil applying rate is 0.34%, and wind speed is 0.5m/s, blowing length 1200m.
As improvement, in described bottle sheet cleaning step, need to be heated to 85～95 ℃ of temperature, with the cleaning fluid containing NaOH sheet alkali, clean, then centrifugal dehydration and potcher processing.
As improvement, in described bottle sheet drying steps, adopt the continuous pre-crystallized bed of boiling type, crystallization temperature is 160 ℃ ~ 175 ℃, and the time of staying is about 15～25 minutes, to drying tower baking temperature, is 160 ℃ ~ 175 ℃, the time of staying is 5～7 hours, makes water content be less than 30PPM.
As preferably, in described cascade filtration step, the melt of melting is 60u ~ 80u(micron through filtering accuracy) screen pack filtration, remove impurity through booster pump, guarantee that the front pressure of measuring pump is 3MPa, to filtering accuracy, be 30u ~ 40u(micron) screen pack, remove the large molecular impurity be unfavorable for spinning;
As preferably, in described coiling and molding step, with automatic switchover up-coiler, guarantee surely to reset long and coiling and molding and make terylene pre-oriented fiber, winding speed is 3000m/min ~ 3300m/min.
Compared with prior art, the invention has the advantages that: owing to adopting the steam discharge screw rod that is applicable to bottle sheet spinning terylene pre-oriented fiber, on the basis of original logos spinning, can remove the impacts of impurity on spinning such as moisture content, PVC, oils, make Se Si and thin dawn of porous bull, quality and color and luster are very close with former raw slicers spinning, and it is low to invest little operating cost, belonging to the world, to spin reclaiming bottle piece spinning terylene pre-oriented fiber pioneering, economical and have a extensive future, and whole technique is more reasonable and practical.
Accompanying drawing explanation
Fig. 1 is flow chart of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
Examples of implementation 1
A production method for spinning polyester preoriented yarn by reusing polyester bottle chip, its step is followed successively by:
1, bottle sheet is broken
1., bottle brick is opened to bag through helical feed, in the removal of impurity (non-PET bottle) of getting on of sorting platform.
2., through label removing machine, remove label paper.
3., send to disintegrating machine through spiral transferring, be broken into the size that size is applicable to spinning.
2, bottle sheet cleans
1., by broken bottle sheet process high speed centrifugation Water Extraction Machinery, removal bottle sheet moisture content and part mud.
2., alkali cleaning pot is heated to 90 ℃ of left and right, add the cleaning fluid of NaOH sheet alkali and autogamy, clean about one hour.
3., through high speed centrifugation dehydration part, remove moisture content and a part alkali lye, in removing residual alkali lye and wilfully remain in through secondary bipacking-auger potcher, density is less than the plastic contaminant of water.
4., through high speed centrifugation Water Extraction Machinery, remove moisture content and label paper, through spiral transferring, send to feed bin packing, guarantee moisture content be less than the impurity such as 4/1000ths, PVC and be less than ten thousand/.
3, bottle sheet is dry
Bottle sheet is delivered to high hopper through transport wind, and to the continuous pre-crystallized bed of BM boiling type, crystallization temperature is 170 ℃, and the time of staying was about about 20 minutes, to drying tower baking temperature, was 170 ℃, and the time of staying is 6 hours, makes water content be less than 30PPM.
4, steam discharge screw extruding and aspiration vacuum technique
It is 292 ℃ ~ 300 ℃ left and right that dried bottle sheet adds steam discharge screw rod Kou，Gong 8 district's heating and temperature control, and bottle sheet is after extrusion molten, produce steam and PVC oils gas, in screw rod stage casing opening part aspiration vacuum, vacuum is less than 100Pa, affecting spinning rough sledding, eliminates.
5, cascade filtration
The suitable process of the melt filtering accuracy of melting is that 60u ~ 80u screen pack filters, and removes impurity through booster pump, guarantees that the front pressure of measuring pump is greater than 3MPa, and the screen pack that is 30u ~ 40u to filtering accuracy, removes the large molecular impurity that is unfavorable for spinning.
6, spinning
In manifold position, through measuring pump, arrive assembly, spinnerets is extruded into silk, through side-blown bellows, and the cooling tow dress that oils into.Spin manifold temperature is 290 ℃ of left and right.Joining side blowing temperature is 22 ℃, and blowing humidity is 80%, and oil applying rate is 0.35%, and wind speed is 0.5m/s, blowing length 1200m.
7, coiling and molding
With automatic switchover up-coiler, guarantee surely to reset long and coiling and molding is made quality and former raw slicers spins close terylene pre-oriented fiber.Winding speed is 3000m/min ~ 3300m/min.
Examples of implementation 2
A production method for spinning polyester preoriented yarn by reusing polyester bottle chip, its step is followed successively by:
1, bottle sheet is broken
1., bottle brick is opened to bag through helical feed, in the removal of impurity (non-PET bottle) of getting on of sorting platform.
2., through label removing machine, remove label paper.
3., send to disintegrating machine through spiral transferring, be broken into the size that size is applicable to spinning.
2, bottle sheet cleans
1., by broken bottle sheet process high speed centrifugation Water Extraction Machinery, removal bottle sheet moisture content and part mud.
2., alkali cleaning pot is heated to 90 ℃ of left and right, add the cleaning fluid of NaOH sheet alkali and autogamy, clean about one hour.
3., through high speed centrifugation dehydration part, remove moisture content and a part alkali lye, in removing residual alkali lye and wilfully remain in through secondary bipacking-auger potcher, density is less than the plastic contaminant of water.
4., through high speed centrifugation Water Extraction Machinery, remove moisture content and label paper, through spiral transferring, send to feed bin packing, guarantee moisture content be less than the impurity such as 4/1000ths, PVC and be less than ten thousand/.
3, bottle sheet is dry
Bottle sheet is delivered to high hopper through transport wind, and to the continuous pre-crystallized bed of BM boiling type, crystallization temperature is 175 ℃, and the time of staying was about about 20 minutes, to drying tower baking temperature, was 175 ℃, and the time of staying is 6 hours, makes water content be less than 30PPM.
4, vapour screw extruding and aspiration vacuum technique
It is 292 ℃ ~ 300 ℃ left and right that dried bottle sheet adds steam discharge screw rod Kou，Gong 8 district's heating and temperature control, and bottle sheet is after extrusion molten, produce steam and PVC oils gas, in screw rod stage casing opening part aspiration vacuum, vacuum is less than 100Pa, affecting spinning rough sledding, eliminates.
5, cascade filtration
The suitable process of the melt filtering accuracy of melting is that 60u ~ 80u screen pack filters, and removes impurity through booster pump, guarantees that the front pressure of measuring pump is greater than 3MPa, and the screen pack that is 30u ~ 40u to filtering accuracy, removes the large molecular impurity that is unfavorable for spinning.
6, spinning
In manifold position, through measuring pump, arrive assembly, spinnerets is extruded into silk, through side-blown bellows, and the cooling tow dress that oils into.Spin manifold temperature is 295 ℃ of left and right.Joining side blowing temperature is 24 ℃, and blowing humidity is 80%, and oil applying rate is 0.4%, and wind speed is 0.6m/s, blowing length 1300m.
7, coiling and molding
With automatic switchover up-coiler, guarantee surely to reset long and coiling and molding is made quality and former raw slicers spins close terylene pre-oriented fiber.Winding speed is 3000m/min ~ 3300m/min.
Examples of implementation 3
A production method for spinning polyester preoriented yarn by reusing polyester bottle chip, its step is followed successively by:
1, bottle sheet is broken
1., bottle brick is opened to bag through helical feed, in the removal of impurity (non-PET bottle) of getting on of sorting platform.
2., through label removing machine, remove label paper.
3., send to disintegrating machine through spiral transferring, be broken into the size that size is applicable to spinning.
2, bottle sheet cleans
1., by broken bottle sheet process high speed centrifugation Water Extraction Machinery, removal bottle sheet moisture content and part mud.
2., alkali cleaning pot is heated to 90 ℃ of left and right, add the cleaning fluid of NaOH sheet alkali and autogamy, clean about one hour.
3., through high speed centrifugation dehydration part, remove moisture content and a part alkali lye, in removing residual alkali lye and wilfully remain in through secondary bipacking-auger potcher, density is less than the plastic contaminant of water.
4., through high speed centrifugation Water Extraction Machinery, remove moisture content and label paper, through spiral transferring, send to feed bin packing, guarantee moisture content be less than the impurity such as 4/1000ths, PVC and be less than ten thousand/.
3, bottle sheet is dry
Bottle sheet is delivered to high hopper through transport wind, and to the continuous pre-crystallized bed of BM boiling type, crystallization temperature is 160 ℃, and the time of staying was about about 20 minutes, to drying tower baking temperature, was 160 ℃, and the time of staying is 6 hours, makes water content be less than 30PPM.
4, steam discharge screw extruding and aspiration vacuum technique
It is 292 ℃ ~ 300 ℃ left and right that dried bottle sheet adds steam discharge screw rod Kou，Gong 8 district's heating and temperature control, and bottle sheet is after extrusion molten, produce steam and PVC oils gas, in screw rod stage casing opening part aspiration vacuum, vacuum is less than 100Pa, affecting spinning rough sledding, eliminates.
5, cascade filtration
The suitable process of the melt filtering accuracy of melting is that 60u ~ 80u screen pack filters, and removes impurity through booster pump, guarantees that the front pressure of measuring pump is greater than 3MPa, and the screen pack that is 30u ~ 40u to filtering accuracy, removes the large molecular impurity that is unfavorable for spinning.
6, spinning
In manifold position, through measuring pump, arrive assembly, spinnerets is extruded into silk, through side-blown bellows, and the cooling tow dress that oils into.Spin manifold temperature is 285 ℃ of left and right.Joining side blowing temperature is 20 ℃, and blowing humidity is 75%, and oil applying rate is 0.3%, and wind speed is 0.4m/s, blowing length 1100m.
7, coiling and molding
With automatic switchover up-coiler, guarantee surely to reset long and coiling and molding is made quality and former raw slicers spins close terylene pre-oriented fiber.Winding speed is 3000m/min ~ 3300m/min.
With this Physical, make regeneration POY polyester filament color and luster good, its strength and elongation and the coefficient of variation and former raw slicers are very nearly the same.Can Bao Sejia bullet and make high-grade wearing fabric.
The technical indicator of regenerated terylene pre-oriented yarn is:
1, appearance requirement
Outward appearance is all with visual method check, needs one by one bobbin to determine etc., is divided into certified products and off grade product.
Appearance index is divided into that lousiness, fracture of wire, oiled threads, tail silk, stiff silk, line, moulding are bad, bobbin and bobbin net weight, and wherein most important is lousiness and two indexs of color and luster.Appearance requirement lousiness, broken end, greasy dirt, stiff silk, line and the bad nothing that is of moulding, tail silk is wanted normal winding, and color and luster is normal, and consistent each color and luster of ectonexine color and luster is consistent.
2, product classificatin
Regenerated terylene pre-oriented yarn product is divided into high-class product (AA level), Grade A (A level), certified products (B level) Three Estate, lower than certified products, is off grade product (C level).
3, performance project and desired value
The physical property project of regenerated terylene pre-oriented yarn and desired value are in Table 1.
Table 1 regenerated terylene pre-oriented yarn physical property and index
Its every outward appearance, physical property and index are consistent with former raw slicers terylene pre-oriented fiber;
Visible, the production method of spinning polyester preoriented yarn by reusing polyester bottle chip of the present invention obtains the technique effect of expection.
Claims (7)
1. a production method for spinning polyester preoriented yarn by reusing polyester bottle chip, is characterized in that step is followed successively by:
(1) bottle is broken;
(2) bottle sheet cleans;
(3) bottle sheet is dry;
(4) steam discharge screw extruding and aspiration vacuum; Dried bottle sheet adds steam discharge screw rod mouth, and totally 7～9 district's heating and temperature control are 292 ℃ ~ 300 ℃, and bottle sheet, after extrusion molten, produces steam and PVC oils gas, and in screw rod stage casing opening part aspiration vacuum, vacuum is less than 100Pa,
(5) cascade filtration;
(6) spinning;
(7) coiling and molding.
2. production method according to claim 1, is characterized in that in spinning step, in manifold, through spinnerets, is extruded into silk, through side-blown bellows, and the cooling tow dress that oils into; Spin manifold temperature is 285～295 ℃, and joining side blowing temperature is 20～24 ℃, and blowing temperature is 75～85 ℃, and oil applying rate is 0.3～0.4%, and wind speed is 0.4m/s ~ 0.6m/s, blowing length 1100～1300m.
3. production method according to claim 2, is characterized in that in spinning step, and spin manifold temperature is 290 ℃, and joining side blowing temperature is 22 ℃, and blowing humidity is 80%, and oil applying rate is 0.34%, and wind speed is 0.5m/s, blowing length 1200m.
4. production method according to claim 1, is characterized in that, in bottle sheet cleaning step, need to being heated to 85～95 ℃ of temperature, with the cleaning fluid containing NaOH sheet alkali, clean, then centrifugal dehydration and potcher processing.
5. production method according to claim 1, it is characterized in that in bottle sheet drying steps, adopt the continuous pre-crystallized bed of boiling type, crystallization temperature is 160 ℃ ~ 175 ℃, the time of staying is about 15～25 minutes, to drying tower baking temperature, be 160 ℃ ~ 175 ℃, the time of staying is 5～7 hours, makes water content be less than 30PPM.
6. production method according to claim 1, it is characterized in that in cascade filtration step, the melt of melting is 60u ~ 80u(micron through filtering accuracy) screen pack filtration, remove impurity through booster pump, guarantee that the front pressure of measuring pump is 3MPa, to filtering accuracy, be 30u ~ 40u(micron) screen pack, remove the large molecular impurity be unfavorable for spinning.
7. production method according to claim 1, is characterized in that in coiling and molding step, guarantees surely to reset long and coiling and molding make terylene pre-oriented fiber with automatic switchover up-coiler, and winding speed is 3000m/min～3300m/min.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104264270A (en) * | 2014-10-13 | 2015-01-07 | 张家港市安顺科技发展有限公司 | Carbon nano tube regenerated polyester staple fiber production method |
| CN104894657A (en) * | 2015-05-27 | 2015-09-09 | 微山县南四湖再生资源利用有限公司 | Large-scale polyester staple fiber production method utilizing PET bottle flakes |
| CN108505216A (en) * | 2018-03-01 | 2018-09-07 | 盘锦禹王无纺布有限责任公司 | The manufacturing method of polyester filament spun-bonded non-woven fabrics |
| CN110014581A (en) * | 2017-11-13 | 2019-07-16 | 无锡市兴盛新材料科技有限公司 | A kind of novel reclamation set of PBT waste material |
| CN111235649A (en) * | 2020-03-30 | 2020-06-05 | 江苏志成新材料科技有限公司 | Process method for spinning regenerated polyester filament yarn by utilizing recycled polyester bottle flakes |
| US11268212B2 (en) | 2020-02-13 | 2022-03-08 | Arun Agarwal | Partially oriented yarn (POY) generation using polyethylene terephthalate (PET) bottle flakes |
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| CN104264270A (en) * | 2014-10-13 | 2015-01-07 | 张家港市安顺科技发展有限公司 | Carbon nano tube regenerated polyester staple fiber production method |
| CN104894657A (en) * | 2015-05-27 | 2015-09-09 | 微山县南四湖再生资源利用有限公司 | Large-scale polyester staple fiber production method utilizing PET bottle flakes |
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| US11268212B2 (en) | 2020-02-13 | 2022-03-08 | Arun Agarwal | Partially oriented yarn (POY) generation using polyethylene terephthalate (PET) bottle flakes |
| CN111235649A (en) * | 2020-03-30 | 2020-06-05 | 江苏志成新材料科技有限公司 | Process method for spinning regenerated polyester filament yarn by utilizing recycled polyester bottle flakes |
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