CN107557888A - A kind of production method of PET bottle regenerated polyester fiber - Google Patents
A kind of production method of PET bottle regenerated polyester fiber Download PDFInfo
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- CN107557888A CN107557888A CN201710733911.9A CN201710733911A CN107557888A CN 107557888 A CN107557888 A CN 107557888A CN 201710733911 A CN201710733911 A CN 201710733911A CN 107557888 A CN107557888 A CN 107557888A
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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
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
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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 present invention is a kind of production method of PET bottle regenerated polyester fiber, including pretreatment, preceding spinning and drawing-off, pretreatment stage realize the cleaning of PET bottle piece after washing flow line, and then carrying out further precisely color separation by infrared device of color separation increases color separation effect；The preceding spinning stage makes the moisture content of PET bottle piece be less than 80ppm by twice drying process, the presence of hydrone can be avoided in melting process so that being broken in PET forming processes, influence spinning quality, in stretching phase by including three sections of drafting machine drawing-offs, increase the degree of draft of spinning, spinning tow advances into oil bath cylinder in second segment drawing-off, frictional force of the spinning tow in drafting process can be reduced, and the transverse crystallizing of tow can be increased, increase the surface smoothness of spinning tow, it is possible to increase the surface property of spinning tow；Its extensibility can reach 400% 500% after stretching three times.
Description
Technical field
The present invention relates to PET utilization technology fields, more particularly to a kind of producer of PET bottle regenerated polyester fiber
Method.
Background technology
Polyethylene terephthalate（PET）, there is excellent physical and mechanical properties within the scope of wider temperature,
The code name of food plastic is " 1 ", and its stable physical property and chemical property cause PET to turn into the main use of packing plastic bottle
Material, poor yet with PET degradation properties, it is in the urgent need to address as one using the recovery for the PET for being on a large scale
Problem.Present PET packages are mainly used in remanufacture textile, the recovery operation of PET bottle piece mainly include processing early stage,
Preceding spinning and drawing-off three parts.But the recovery to the non-PET materials in PET bottle in pretreatment process is more complicated, and to PET bottle
The color separation of piece is not thorough enough, influences fore-spinning below, while in preceding spinning operation process, because PET is regeneration, therefore
In order to ensure the quality of polyester fiber, and consider to need to carry out PET certain modification in the case of cost, while in drawing-off portion
Point how in the case of energy-conservation ensure Drafting quality the problems such as, be present PET regenerated polyester fibers need consider the problem of.
The content of the invention
The purpose of the present invention is to be directed to above technical problem, there is provided a kind of production method of PET bottle regenerated polyester fiber.
A kind of production method of PET bottle regenerated polyester fiber, comprises the following steps：
1）Pretreatment：PET bottle is subjected to first screening and the PET bottle piece that 18-20 millimeters are ground into after first wash, by PET bottle
Piece carries out drying and processing after washing flow line, most carries out color separation through infrared device of color separation afterwards；
2）Preceding spinning：Pretreated PET bottle piece sequentially enters heated-air drying workshop and vacuum drying workshop extremely after air channel is lifted
Water content is less than 80ppm, and dried PET bottle piece enters spinneret machine spinneret, subsequent spinning tow warp after single screw extrusion machine
Cluster tool boundling；
3）Drawing-off：Spinning tow carries out drawing-offs through three sections of drafting machines respectively, into second segment drafting machine before spinning tow by oil
Bathtub, spinning tow pass through thermal water storage tank before entering the 3rd section of drafting machine, from the 3rd section of drafting machine out after spinning tow through removing
Wet setting machine removes wet setting, subsequently into dryer plastotype, final cutting packaging.
In one of the embodiments, the step 1）Middle washing flow line is including rinse bath, the first rinse bath are three times
Hot water cleans, and the second rinse bath is caustic dip groove, and the 3rd rinse bath is clear water rinse bath.
In one of the embodiments, temperature is 70-85 DEG C in first rinse bath, pH value in second rinse bath
For 7.3-8.0, the relative density in the second rinse bath is 1.38-1.7.
In one of the embodiments, the step 2）In middle single screw extrusion machine add toner, chain extender, filler and
Modifying agent.
In one of the embodiments, the quality of the toner be PET bottle tablet quality 0.5-1%, the matter of the chain extender
Measure as the 1.2-4% of PET bottle tablet quality, the quality of the filler is the 2-3.5% of PET bottle tablet quality, the matter of the modifying agent
Measure as the 0.5-0.8% of PET bottle tablet quality.
In one of the embodiments, the step 3）The temperature of middle first paragraph drawing-off is 100-150 DEG C, second segment drawing-off
Temperature be 100-120 DEG C.
In one of the embodiments, spinning is 1 in the inlet and outlet linear velocity ratio of first paragraph drafting machine:1.5-2.2
Spinning is 1 in the inlet and outlet linear velocity ratio of second segment drafting machine:2-3.
In one of the embodiments, the step 3）In the 3rd section of drafting machine inlet and outlet linear velocity ratio be 1:
1.2-1.5。
In one of the embodiments, the step 3）Middle oil bath cylinder temperature is 70-80 DEG C, is added with and accounts in oil bath cylinder
Spinning quality 0.2-0.5% antistatic agent.
In summary, a kind of production method of PET bottle regenerated polyester fiber, including pretreatment, preceding spinning and drawing-off, pretreatment
Stage realizes the cleaning of PET bottle piece after washing flow line, then carries out further accurate point by infrared device of color separation
Color increases color separation effect；The preceding spinning stage makes the moisture content of PET bottle piece be less than 80ppm by twice drying process, can melt
During avoid the presence of hydrone so that being broken in PET forming processes, spinning quality is influenceed, in stretching phase by including three
Section drafting machine drawing-off, increases the degree of draft of spinning, and spinning tow advances into oil bath cylinder in second segment drawing-off, can reduce spinning silk
Frictional force of the beam in drafting process, and the transverse crystallizing of tow can be increased, increase the surface smoothness of spinning tow,
The surface property of spinning tow can be improved；Its extensibility can reach 400%-500% after stretching three times.
Embodiment
In order that the objects, technical solutions and advantages of the present invention become apparent from, with reference to embodiments, traveling one is entered to the present invention
Step describes in detail.It should be appreciated that specific embodiment described herein is only to more fully understand technical scheme,
It is not intended to limit the present invention.
A kind of production method of PET bottle regenerated polyester fiber, comprises the following steps：
1）Pretreatment：PET bottle is subjected to first screening and the PET bottle piece that 18-20 millimeters are ground into after first wash, by PET bottle
Piece carries out drying and processing after washing flow line, most carries out color separation through infrared device of color separation afterwards；
2）Preceding spinning：Pretreated PET bottle piece sequentially enters heated-air drying workshop and vacuum drying workshop extremely after air channel is lifted
Water content is less than 80ppm, and dried PET bottle piece enters spinneret machine spinneret, subsequent spinning tow warp after single screw extrusion machine
Cluster tool boundling；
3）Drawing-off：Spinning tow carries out drawing-offs through three sections of drafting machines respectively, into second segment drafting machine before spinning tow by oil
Bathtub, spinning tow pass through thermal water storage tank before entering the 3rd section of drafting machine, from the 3rd section of drafting machine out after spinning tow through removing
Wet setting machine removes wet setting, subsequently into dryer plastotype, final cutting packaging.Pretreatment stage is real after washing flow line
The cleaning of existing PET bottle piece, then carrying out further precisely color separation by infrared device of color separation increases color separation effect；The preceding spinning stage
The moisture content for making PET bottle piece by twice drying process is less than 80ppm, the presence of hydrone can be avoided to make in melting process
Obtain and be broken in PET forming processes, influence spinning quality, in stretching phase by including three sections of drafting machine drawing-offs, increase spinning
Degree of draft, spinning tow advance into oil bath cylinder in second segment drawing-off, can reduce frictional force of the spinning tow in drafting process,
And the transverse crystallizing of tow can be increased, increase the surface smoothness of spinning tow, it is possible to increase the surface of spinning tow
Performance；Its extensibility can reach 400%-500% after stretching three times.
In one of the embodiments, the step 1）Middle washing flow line is including rinse bath, the first rinse bath are three times
Hot water cleans, and the second rinse bath is caustic dip groove, and the 3rd rinse bath is clear water rinse bath.Major pollutants on PET sheet are
The materials such as protein, carbohydrate, such material is soluble in water at high temperature, therefore passes through HIGH TEMPERATURE PURGE, can effectively remove PET sheet
Upper most of dirt, improve cleanliness efficiency and reduce cost；The alkaline cleaner of addition can remove PET sheet surface adhesion
Adhesive, while the further residue on cleaning PET sheet；The clear water of 3rd rinse bath is needed to being come out from caustic dip groove
PET bottle piece carry out neutralization cleaning, avoid the akaline liquid of band above from having harmful effect to the spinning stage before follow-up.
In one of the embodiments, temperature is 70-85 DEG C in first rinse bath, pH value in second rinse bath
For 7.3-8.0, the relative density in the second rinse bath is 1.38-1.7.Major impurity in PET sheet comes from the bottle cap of PET bottle
Part, and covering part is PVC material, and the density of PVC bottle caps is less than the density of PET sheet, therefore adjust in the second rinse bath
Density be beneficial to PVC bottle caps is swum on the water surface, directly filter PVC bottle caps, it is possible to increase bottle cap screening efficiency and reliably
Property, and the artificial of this flow can be saved.Alkaline cleaner is added in second rinse bath, alkaline cleaner is including content
2%-5% sodium hydroxide, 1-3% salt assitant, 2%-9% surfactant and 5%-8% solvent, salt assitant is tripolyphosphate
One kind in sodium or sub- sodium metasilicate, solvent NMP, one kind greatly in anti-plain boiled water, small anti-plain boiled water and petroleum ether.Second cleaning
Vibration of ultrasonic wave device is set in groove, cleaning of the auxiliary alkaline cleaner to PET bottle piece, can be increased while cleaning rate is accelerated
Strong cleaning performance.
In one of the embodiments, the step 2）In middle single screw extrusion machine add toner, chain extender, filler and
Modifying agent.
In one of the embodiments, the quality of the toner be PET bottle tablet quality 0.5-1%, the matter of the chain extender
Measure as the 1.2-4% of PET bottle tablet quality, the quality of the filler is the 2-3.5% of PET bottle tablet quality, the matter of the modifying agent
Measure as the 0.5-0.8% of PET bottle tablet quality.
In one of the embodiments, the step 3）The temperature of middle first paragraph drawing-off is 100-150 DEG C, second segment drawing-off
Temperature be 100-120 DEG C.The temperature of first paragraph drawing-off and second segment drawing-off can improve the degree of draft of spinning tow.
In one of the embodiments, spinning is 1 in the inlet and outlet linear velocity ratio of first paragraph drafting machine:1.5-2.2
Spinning is 1 in the inlet and outlet linear velocity ratio of second segment drafting machine:2-3.Spinning tow first paragraph drafting machine and the second drawing-off
The muzzle velocity of machine is more than inlet velocity, spinning tow can be avoided to be detained in drafting process in drafting machine so that spinning
The cross section of tow is uneven, influences spinning drawing aftershaping effect, and is so beneficial to improve Draft Effect.
In one of the embodiments, the step 3）In the 3rd section of drafting machine inlet and outlet linear velocity ratio be 1:
1.2-1.5。
In one of the embodiments, the step 3）Middle oil bath cylinder temperature is 70-80 DEG C, is added with and accounts in oil bath cylinder
Spinning quality 0.2-0.5% antistatic agent.The antistatic agent added in oil bath cylinder is adhered on spinning tow, through drawing-off rear defence
Electrostatic agent enters spinning tow surface, and the product for making to finally obtain has certain anti-static effect, and spinning tow is through first
Certain temperature is carried after drafting machine drawing-off, therefore oil bath cylinder temperature is set with spinning tow close to temperature, avoids spinning silk
Shu Wendu change brings internal stress change to influence product crystallinity.
Embodiment 1
A kind of production method of PET bottle regenerated polyester fiber, comprises the following steps：
1）Pretreatment：PET bottle is subjected to first screening and the PET bottle piece that 18 millimeters are ground into after first wash, PET bottle piece is passed through
Drying and processing is carried out after over cleaning streamline, washing flow line includes rinse bath three times, and the first rinse bath cleans for hot water, and first
Temperature is 70 DEG C in rinse bath, and the second rinse bath be caustic dip groove, and pH value is 7.5 in the second rinse bath, and relative density is
1.4, the 3rd rinse bath is clear water rinse bath, most carries out color separation through infrared device of color separation afterwards；
2）Preceding spinning：Pretreated PET bottle piece sequentially enters heated-air drying workshop and vacuum drying workshop extremely after air channel is lifted
Water content 78ppm, dried PET bottle piece enter spinneret machine spinneret after single screw extrusion machine, added in single screw extrusion machine
Toner, chain extender, filler and modifying agent, the quality of toner are the 0.5% of PET bottle tablet quality, and the quality of chain extender is PET bottle
The 1.2% of tablet quality, the quality of filler are the 2% of PET bottle tablet quality, and the quality of modifying agent is the 0.5% of PET bottle tablet quality, with
Spinning tow is through cluster tool boundling afterwards；
3）Drawing-off：Spinning tow carries out drawing-offs through three sections of drafting machines respectively, and the temperature of first paragraph drawing-off is 100 DEG C, and spinning is the
The inlet and outlet linear velocity ratio of one section of drafting machine is 1:1.5, the temperature of second segment drawing-off is 100 DEG C, and spinning is led in second segment
The inlet and outlet linear velocity ratio for stretching machine is 1:2, into second segment drafting machine before spinning tow pass through oil bath cylinder, temperature in oil bath cylinder
Spend for 70 DEG C, oil bath cylinder is interior to pass through added with the antistatic agent for accounting for spinning quality 0.2%, spinning tow before entering the 3rd section of drafting machine
Water vat is overheated, the linear velocity ratio of the inlet and outlet of the 3rd section of drafting machine is 1:1.2, from the 3rd section of drafting machine come out after spinning
Tow removes wet setting through the forming machine that dehumidifies, subsequently into dryer plastotype, final cutting packaging.
Embodiment 2
A kind of production method of PET bottle regenerated polyester fiber, comprises the following steps：
1）Pretreatment：PET bottle is subjected to first screening and the PET bottle piece that 18 millimeters are ground into after first wash, PET bottle piece is passed through
Drying and processing is carried out after over cleaning streamline, washing flow line includes rinse bath three times, and the first rinse bath cleans for hot water, and first
Temperature is 73 DEG C in rinse bath, and the second rinse bath be caustic dip groove, and pH value is 7.6 in the second rinse bath, and relative density is
1.5, the 3rd rinse bath is clear water rinse bath, most carries out color separation through infrared device of color separation afterwards；
2）Preceding spinning：Pretreated PET bottle piece sequentially enters heated-air drying workshop and vacuum drying workshop extremely after air channel is lifted
Water content 76ppm, dried PET bottle piece enter spinneret machine spinneret after single screw extrusion machine, added in single screw extrusion machine
Toner, chain extender, filler and modifying agent, the quality of toner are the 0.6% of PET bottle tablet quality, and the quality of chain extender is PET bottle
The 1.6% of tablet quality, the quality of filler are the 2.5% of PET bottle tablet quality, and the quality of modifying agent is the 0.6% of PET bottle tablet quality,
Subsequent spinning tow is through cluster tool boundling；
3）Drawing-off：Spinning tow carries out drawing-offs through three sections of drafting machines respectively, and the temperature of first paragraph drawing-off is 115 DEG C, and spinning is the
The inlet and outlet linear velocity ratio of one section of drafting machine is 1:1.7, the temperature of second segment drawing-off is 105 DEG C, and spinning is led in second segment
The inlet and outlet linear velocity ratio for stretching machine is 1:2.3, into second segment drafting machine before spinning tow pass through oil bath cylinder, in oil bath cylinder
Temperature is 73 DEG C, the antistatic agent for accounting for spinning quality 0.3% is added with oil bath cylinder, before spinning tow enters the 3rd section of drafting machine
By thermal water storage tank, the linear velocity ratio of the inlet and outlet of the 3rd section of drafting machine is 1:1.2, from the 3rd section of drafting machine come out after spinning
Silk tow removes wet setting through the forming machine that dehumidifies, subsequently into dryer plastotype, final cutting packaging.
Embodiment 3
A kind of production method of PET bottle regenerated polyester fiber, comprises the following steps：
1）Pretreatment：PET bottle is subjected to first screening and the PET bottle piece that 19 millimeters are ground into after first wash, PET bottle piece is passed through
Drying and processing is carried out after over cleaning streamline, washing flow line includes rinse bath three times, and the first rinse bath cleans for hot water, and first
Temperature is 77 DEG C in rinse bath, and the second rinse bath be caustic dip groove, and pH value is 7.8 in the second rinse bath, and relative density is
1.6, the 3rd rinse bath is clear water rinse bath, most carries out color separation through infrared device of color separation afterwards；
2）Preceding spinning：Pretreated PET bottle piece sequentially enters heated-air drying workshop and vacuum drying workshop extremely after air channel is lifted
Water content 75ppm, dried PET bottle piece enter spinneret machine spinneret after single screw extrusion machine, added in single screw extrusion machine
Toner, chain extender, filler and modifying agent, the quality of toner are the 0.7% of PET bottle tablet quality, and the quality of chain extender is PET bottle
The 2% of tablet quality, the quality of filler are the 3% of PET bottle tablet quality, and the quality of modifying agent is the 0.6% of PET bottle tablet quality, then
Spinning tow is through cluster tool boundling；
3）Drawing-off：Spinning tow carries out drawing-offs through three sections of drafting machines respectively, and the temperature of first paragraph drawing-off is 130 DEG C, and spinning is the
The inlet and outlet linear velocity ratio of one section of drafting machine is 1:2, the temperature of second segment drawing-off is 110 DEG C, and spinning is in second segment drawing-off
The inlet and outlet linear velocity ratio of machine is 1:2.5, into second segment drafting machine before spinning tow pass through oil bath cylinder, temperature in oil bath cylinder
Spend for 75 DEG C, oil bath cylinder is interior to pass through added with the antistatic agent for accounting for spinning quality 0.4%, spinning tow before entering the 3rd section of drafting machine
Water vat is overheated, the linear velocity ratio of the inlet and outlet of the 3rd section of drafting machine is 1:1.3, from the 3rd section of drafting machine come out after spinning
Tow removes wet setting through the forming machine that dehumidifies, subsequently into dryer plastotype, final cutting packaging.
Embodiment 4
A kind of production method of PET bottle regenerated polyester fiber, comprises the following steps：
1）Pretreatment：PET bottle is subjected to first screening and the PET bottle piece that 20 millimeters are ground into after first wash, PET bottle piece is passed through
Drying and processing is carried out after over cleaning streamline, washing flow line includes rinse bath three times, and the first rinse bath cleans for hot water, and first
Temperature is 80 DEG C in rinse bath, and the second rinse bath be caustic dip groove, and pH value is 7.8 in the second rinse bath, and relative density is
1.7, the 3rd rinse bath is clear water rinse bath, most carries out color separation through infrared device of color separation afterwards；
2）Preceding spinning：Pretreated PET bottle piece sequentially enters heated-air drying workshop and vacuum drying workshop extremely after air channel is lifted
Water content 77ppm, dried PET bottle piece enter spinneret machine spinneret after single screw extrusion machine, added in single screw extrusion machine
Toner, chain extender, filler and modifying agent, the quality of toner are the 0.8% of PET bottle tablet quality, and the quality of chain extender is PET bottle
The 3% of tablet quality, the quality of filler are the 3.2% of PET bottle tablet quality, and the quality of modifying agent is the 0.7% of PET bottle tablet quality, with
Spinning tow is through cluster tool boundling afterwards；
3）Drawing-off：Spinning tow carries out drawing-offs through three sections of drafting machines respectively, and the temperature of first paragraph drawing-off is 140 DEG C, and spinning is the
The inlet and outlet linear velocity ratio of one section of drafting machine is 1:2.1, the temperature of second segment drawing-off is 115 DEG C, and spinning is led in second segment
The inlet and outlet linear velocity ratio for stretching machine is 1:2.8, into second segment drafting machine before spinning tow pass through oil bath cylinder, in oil bath cylinder
Temperature is 78 DEG C, the antistatic agent for accounting for spinning quality 0.4% is added with oil bath cylinder, before spinning tow enters the 3rd section of drafting machine
By thermal water storage tank, the linear velocity ratio of the inlet and outlet of the 3rd section of drafting machine is 1:1.4, from the 3rd section of drafting machine come out after spinning
Silk tow removes wet setting through the forming machine that dehumidifies, subsequently into dryer plastotype, final cutting packaging.
Embodiment 5
A kind of production method of PET bottle regenerated polyester fiber, comprises the following steps：
1）Pretreatment：PET bottle is subjected to first screening and the PET bottle piece that 20 millimeters are ground into after first wash, PET bottle piece is passed through
Drying and processing is carried out after over cleaning streamline, washing flow line includes rinse bath three times, and the first rinse bath cleans for hot water, and first
Temperature is 85 DEG C in rinse bath, and the second rinse bath be caustic dip groove, and pH value is 8.0 in the second rinse bath, and relative density is
1.7, the 3rd rinse bath is clear water rinse bath, most carries out color separation through infrared device of color separation afterwards；
2）Preceding spinning：Pretreated PET bottle piece sequentially enters heated-air drying workshop and vacuum drying workshop extremely after air channel is lifted
Water content 72ppm, dried PET bottle piece enter spinneret machine spinneret after single screw extrusion machine, added in single screw extrusion machine
Toner, chain extender, filler and modifying agent, the quality of toner are the 1% of PET bottle tablet quality, and the quality of chain extender is PET bottle piece
The 4% of quality, the quality of filler are the 3.5% of PET bottle tablet quality, and the quality of modifying agent is the 0.8% of PET bottle tablet quality, then
Spinning tow is through cluster tool boundling；
3）Drawing-off：Spinning tow carries out drawing-offs through three sections of drafting machines respectively, and the temperature of first paragraph drawing-off is 150 DEG C, and spinning is the
The inlet and outlet linear velocity ratio of one section of drafting machine is 1:2.2, the temperature of second segment drawing-off is 120 DEG C, and spinning is led in second segment
The inlet and outlet linear velocity ratio for stretching machine is 1:3, into second segment drafting machine before spinning tow pass through oil bath cylinder, in oil bath cylinder
Temperature is 80 DEG C, the antistatic agent for accounting for spinning quality 0.5% is added with oil bath cylinder, before spinning tow enters the 3rd section of drafting machine
By thermal water storage tank, the linear velocity ratio of the inlet and outlet of the 3rd section of drafting machine is 1:1.5, after the 3rd section of drafting machine comes out
Spinning tow removes wet setting through the forming machine that dehumidifies, subsequently into dryer plastotype, final cutting packaging.
Embodiment described above is only the preferred embodiment of the present invention, it is noted that for the art
Those of ordinary skill, under the premise without departing from the principles of the invention, can also make improvement and deformation, these improve and deformation
Also should be regarded as not departing from protection scope of the present invention.
Claims (9)
1. a kind of production method of PET bottle regenerated polyester fiber, it is characterised in that comprise the following steps：
1）Pretreatment：PET bottle is subjected to first screening and the PET bottle piece that 18-20 millimeters are ground into after first wash, by PET bottle
Piece carries out drying and processing after washing flow line, most carries out color separation through infrared device of color separation afterwards；
2）Preceding spinning：Pretreated PET bottle piece sequentially enters heated-air drying workshop and vacuum drying workshop extremely after air channel is lifted
Water content is less than 80ppm, and dried PET bottle piece enters spinneret machine spinneret, subsequent spinning tow warp after single screw extrusion machine
Cluster tool boundling；
3）Drawing-off：Spinning tow carries out drawing-offs through three sections of drafting machines respectively, into second segment drafting machine before spinning tow by oil
Bathtub, spinning tow pass through thermal water storage tank before entering the 3rd section of drafting machine, from the 3rd section of drafting machine out after spinning tow through removing
Wet setting machine removes wet setting, subsequently into dryer plastotype, final cutting packaging.
A kind of 2. production method of PET bottle regenerated polyester fiber according to claim 1, it is characterised in that：The step 1）
Middle washing flow line includes rinse bath three times, and the first rinse bath cleans for hot water, and the second rinse bath is caustic dip groove, and the 3rd is clear
Washing trough is clear water rinse bath.
A kind of 3. production method of PET bottle regenerated polyester fiber according to claim 2, it is characterised in that：Described first is clear
Temperature is 70-85 DEG C in washing trough, and pH value is 7.3-8.0 in second rinse bath, and the relative density in the second rinse bath is
1.38-1.7。
A kind of 4. production method of PET bottle regenerated polyester fiber according to claim 1, it is characterised in that：The step 2）
Toner, chain extender, filler and modifying agent are added in middle single screw extrusion machine.
A kind of 5. production method of PET bottle regenerated polyester fiber according to claim 4, it is characterised in that：The toner
Quality is the 0.5-1% of PET bottle tablet quality, and the quality of the chain extender is the 1.2-4% of PET bottle tablet quality, the filler
Quality is the 2-3.5% of PET bottle tablet quality, and the quality of the modifying agent is the 0.5-0.8% of PET bottle tablet quality.
A kind of 6. production method of PET bottle regenerated polyester fiber according to claim 1, it is characterised in that：The step 3）
The temperature of middle first paragraph drawing-off is 100-150 DEG C, and the temperature of second segment drawing-off is 100-120 DEG C.
A kind of 7. production method of PET bottle regenerated polyester fiber according to claim 6, it is characterised in that：Spinning is first
The inlet and outlet linear velocity ratio of section drafting machine is 1:1.5-2.2, inlet and outlet linear velocity of the spinning in second segment drafting machine
Than for 1:2-3.
A kind of 8. production method of PET bottle regenerated polyester fiber according to claim 1, it is characterised in that：The step 3）
In the 3rd section of drafting machine inlet and outlet linear velocity ratio be 1:1.2-1.5.
A kind of 9. production method of PET bottle regenerated polyester fiber according to claim 1, it is characterised in that：The step 3）
Middle oil bath cylinder temperature is 70-80 DEG C, added with the antistatic agent for accounting for spinning quality 0.2-0.5% in oil bath cylinder.
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| CN201710733911.9A CN107557888A (en) | 2017-08-24 | 2017-08-24 | A kind of production method of PET bottle regenerated polyester fiber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109629018A (en) * | 2019-01-14 | 2019-04-16 | 湖南梦洁家纺股份有限公司 | A kind of preparation method regenerating two-dimentional ten hole unstressed configuration fibers |
| CN110952155A (en) * | 2019-11-20 | 2020-04-03 | 浙江佳人新材料有限公司 | Production process of cyclic regeneration antistatic fiber |
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| CN109629018A (en) * | 2019-01-14 | 2019-04-16 | 湖南梦洁家纺股份有限公司 | A kind of preparation method regenerating two-dimentional ten hole unstressed configuration fibers |
| CN110952155A (en) * | 2019-11-20 | 2020-04-03 | 浙江佳人新材料有限公司 | Production process of cyclic regeneration antistatic fiber |
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