CN101928992A - Method for preparing recycled polyester fully drawn yarn - Google Patents
Method for preparing recycled polyester fully drawn yarn Download PDFInfo
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- CN101928992A CN101928992A CN2010102167379A CN201010216737A CN101928992A CN 101928992 A CN101928992 A CN 101928992A CN 2010102167379 A CN2010102167379 A CN 2010102167379A CN 201010216737 A CN201010216737 A CN 201010216737A CN 101928992 A CN101928992 A CN 101928992A
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Abstract
The invention relates to a method for preparing recycled polyester fully drawn yarn and belongs to the field of textile chemical fibers. The method comprises the following steps of: drying recycled polyester bottle flakes; spinning; cooling by horizontally blowing; applying oil and beaming to form a pre-network; winding to obtain a finished product; dyeing, physically examining and classifying; and packaging and warehousing. The method for preparing the recycled polyester fully drawn yarn has the advantages of reasonable process design and equipment configuration, stable product quality, reliable spinning performance and long life cycle of spinning assemblies.
Description
Technical field
The present invention relates to a kind of preparation method of recycled polyester fully drawn yarn, belong to the textile chemical fiber field.
Background technology
In recent years, the recycling of recycled polyester is confined to utilize recycled polyester to produce various staple fibres substantially, this is because the inherent viscosity of recycled polyester material is irregular, PVC composition, impurity content are many, with the technological level and the process of present routine, if be used for spinning filament, can't be successful, spun product quality does not reach standard, and the production cost height, and productivity effect is low.Therefore, can only spin the staple fibre of low side, what caused the recycled polyester reclaimed materials utilizes level not high, and resource can not get more efficient use, can not reduce the production of primary polyester, and environment, the destruction Of resources are big.
Summary of the invention
Technical problem to be solved by this invention provide a kind of technological design rationally, the equipment configuration rationally, the preparation method of constant product quality, spinning properties is reliable, the filament spinning component life cycle is long recycled polyester fully drawn yarn.
The present invention solves the problems of the technologies described above the preparation method that the technical scheme that is adopted is this recycled polyester fully drawn yarn, and its making step is:
A, bottle chips is transported to the storage bin of drying crystalline device top, by the control of the operated pneumatic valve on storage bin blanking pipeline blanking quantity, discharges to crystallizer, the crystallization wind-warm syndrome of bottle sheet just is controlled at 120 degree according to bottle sheet water content---160 degree;
B, bottle sheet by crystallization after,---6 hours is 150 with temperature---170 degree that are transported to drying tower drying 4, dew point carry out drying at the above dry air of negative 80 degree, the moisture content of bottle sheet is controlled at 30 after the drying---40PPM;
C, employing one secondary fine filtering apparatus, filter area is PF, and---4T---12---7 is provided with the melt booster pump between one-level and the secondary, the employing draw ratio is 1: 30 a screw rod, the screw rod homogeneous heating is divided into 7 districts, temperature is set at: the district's temperature height in the middle of being positioned at, and district's temperature at two ends is low, and the screw rod melt pressure is 110 kilograms, booster pump pressure is double centner, booster pump temperature 295 degree, condition of spinning manifold temperature 295 degree make the melt thread spray from spinnerets;
After d, the ejection of melt thread, adopt the wide air regulator of 1400*1400mm to carry out horizontal blowing cooling, wind speed is that 0.6m/s-0.8m/s, wind-warm syndrome are 28 ± 1 degree;
E, then a bundle fiber is divided into two by two groups of atomizer oil suctions, allows to reconsolidate after the full and uniform oil suction of fiber be a bundle fiber again; Specifically be that a bundle fiber is divided into two by two groups of atomizer oil suctions, allows and merge into a bundle fiber after the full and uniform oil suction of fiber.The principle that oils is with conventional identical.On equipment, install the light network equipment of a cover additional, improve the cohesive force of tow
F, employing full-automatic accurate up-coiler equipment are reeled; The full-automatic accurate up-coiler is that beautiful system machine engineering company makes in Beijing.
G, adopt the one-step method production process flow process of spinning and drawing-off associating or adopt the large package list ingot position of independent temperature completely to roll up silk 180 an ingots lengthening drawing machine then, be under 1000 meters/minute the condition at draft speed, heat coiling 10 circles, cold dish is around 5 circles, adopt the typing of indirect touch hot plate then, temperature of heat plate is 80---100 degree, and hot plate temperature is 140---190 degree, obtain finished silk, finish the making of recycled polyester fully drawn yarn; The up-coiler model that is adopted is BWA860.The HEAT SETTING effect of contact hot plate is better than conventional contactless hot plate, is fit to the thick denier filament drafting process of recycled polyester and heats.
As preferably, 7 district's temperature of screw rod heating of the present invention are respectively: a district 275 degree, two districts, 285 degree, three districts, 295 degree, four districts 305 are spent, five districts 305 are spent, six districts 295 are spent, seven districts 295 are spent.
As preferably, among the step e of the present invention, oil concentration is controlled at 12%, and the precursor oil content is controlled at 1%.
As preferably, among the step f of the present invention, spinning silk winding speed be 3000--4500 rice/minute, every spinning cake 7.5--15 kilogram.
As preferably, bottle chips of the present invention is the high-quality filament-grade bottle chips through screening.
The present invention compares with existing technology, has the following advantages and characteristics:
By comprehensive technology, equipment improvement, making the recycled polyester material produce long filament becomes possibility, and concrete advantage applies exists:
1, considers that from the bulk properties of bottle chips emphasis carries out the draw ratio innovation to screw rod and improves, solve bottle chips and the difference of cutting into slices and expecting, the slice spinning screw slenderness ratio is 1: 25, the bottle sheet spins and is improved to 1: 30, improve the compression factor of screw rod, made the fusion fully in screw rod of bottle sheet after the draw ratio of change screw rod, improved the flowability of melt, solved the pressure oscillation of screw rod, spinnability improves and improves.
2, the filter efficiency of improved filter and capacity, improve the degree of purity of melt, at the many difficult problems of bottle sheet impurity, we have designed and have added booster pump in the middle of the secondary one different size high capacity filter and stablize melt pressure, strengthen filter area, improve filtering accuracy, make the basic standard of degree of purity of recycled polyester melt, improve the spinning property of recycled polyester raw material once more near primary polyester slice.
3, improve the filament spinning component assembly structure, design has strengthened the capacity of assembly filtrate, and filtrate is increased to 130 grams from 100 grams, and the specification of filter screen has also been done to improve and changed 7 layers of net into from 9 layers of net and reduce component pressure effectively, has prolonged the life cycle of assembly.
4, reach the standard of primary textile product for the physical index that makes the special-shaped many F full-drawn yarn in recycled polyester cross section, we also the special concern melt form cooling behind the melt thread from porous spinnerets ejection, oil, the improvement of boundling process, we change the wind speed and the wind-warm syndrome of horizontal blowing on technology, emphasis improves the finish oiling device, the melt thread that allows spinnerets spray is through obtaining evenly after the horizontal blowing cooling.Quantitatively oil suction fully impels the tow crystal inside to generate.We adopt tow to divide the fibre method that oils, atomizer that improvement atomizer frame doubles on original basis and one times traveller, the melt thread of a spinnerets ejection is assigned to 2 atomizers divides fibre to oil, satisfy the condition that fiber basis weight fully absorbs finish, improved the uniformity that oils, improve the stable generation of tow crystal inside, help back road modification or drawing-off, reduce problems such as lousiness and broken end.In order to solve boundling better, below the path, install together pre-Network device above the up-coiler additional and further improve the boundling effect.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment, and following examples are explanation of the invention and the present invention is not limited to following examples.
Embodiment 1:
Present embodiment has been described a kind of preparation method of recycled polyester fully drawn yarn, adopts following technology successively:
The drying process of regenerative piece of polyester bottle: the filament-grade bottle chips of choosing is transported to the storage bin of drying crystalline device top,, discharges to crystallizer by the control of the operated pneumatic valve on storage bin blanking pipeline blanking quantity.The crystallization wind-warm syndrome of bottle sheet just is controlled at 120 degree according to bottle sheet water content---160 degree, the bottle sheet is transported to drying tower drying 4 after by crystallization---and 6 hours, bearing more than 80 degree with dry air, dew point, temperature is controlled at 150---170 degree, final moisture content according to the bottle sheet just comes to determine, the moisture content that dry back bottle sheet meets spinning requirement is controlled at 30---and 40PPM, can satisfy spinning requirement.
Melt-spinning technology: adopting the draw ratio aim at regenerative piece of polyester bottle spinning design is that 1: 30 special-purpose bottle sheet spins screw rod (the screw rod specification is determined according to spinning output), the screw rod heating divides 7 districts, and relative temperature is set at: a district 275 degree, two districts, 285 degree, three districts, 295 degree, four districts, 305 degree, five districts, 305 degree, six districts, 295 degree, seven districts, 295 degree.110 kilograms of screw rod melt pressures,, booster pump pressure double centner, booster pump temperature 295 degree, condition of spinning manifold temperature 295 degree.Adopt that the one secondary is smart to be filtered, filter area is PF---4T---12---7.Install the melt booster pump between one-level and the secondary additional, guarantee that the cascade filtration melt pressure is stable.Filter temperature and spinning body temperature balance.
Horizontal blowing technology: adopt the wide air regulator of 1400*1400mm, wind speed 0.6m/s-0.8m/s, wind-warm syndrome 28 ± 1 degree are guaranteed the melt thread after the spinnerets ejection, the cooling effect of but being worked as.
Boundling technology oils: adopt to divide the fibre method that oils, the tow oil suction is evenly abundant, installs the light network equipment of a cover before the coiling finished product additional, improves the cohesive force of tow, improves the boundling effect, for drawing-off guarantees former yarn quality.Oil concentration is controlled at 12%, and the precursor oil content is controlled at 1%.Divide fibre to oil to refer to a bundle fiber be divided into two by two groups of atomizer oil suctions, allow and merge into a bundle fiber after the full and uniform oil suction of fiber.The principle that oils is with conventional identical.
Coiling finished product technology: 3000 meters/minute of spinning silk winding speed, adopt full-automatic accurate up-coiler equipment and technology, finished silk can reach the fixed great package of fixed length, and 15 kilograms of every spinning cakes effectively improve the board production capacity, reduce waste silk and produce.
Full draft process: adopt FDY equipment or adopt large package list ingot position completely to roll up silk 180 ingots lengthening drawing machine independent temperature, 1000 meters/minute of draft speeds, heat coiling 10 circles, cold dish are around 5 circles, the typing of indirect touch hot plate, temperature of heat plate 80---100 degree, hot plate temperature 140---190 degree are all determined according to different size.
Dyeing, quality testing, grading technology: adopt footwear machine that every finished silk is made into suspenders, 10 centimeters dye tests in normal temperature of length, reaching ash card 4 grade standards is Grade A, is lower than 4 grades and is certified products, physical examination is checked according to product standard.Visual grading is by the product appearance standard, and not reaching Grade A and be certified products, not reach certified products be off grade product.
Appropriate measures are effective because above-mentioned innovation is improved one's methods, the equipment technology and the technology of the cross section special-shaped many F full-drawn yarn product of regenerative polyester bottle sheet stock influence spinning have been solved targetedly, changed the spinning property of regenerative polyester bottle sheet stock melt spinning, it is completely successful to make the special-shaped many F full-drawn yarn in regenerative polyester bottle sheet stock production cross section obtain the garden, product detects through Zhejiang Province's examination of fibers office, and product quality meets standard.
We research and develop the cross section special-shaped many F full-drawn yarn of recycled polyester product purpose is exactly fully to excavate the social new resources of recycled polyester, further widen recycled polyester and use the field, creating recycled polyester is new function, make it to have primary function and the value of spinning terylene fully drawn yarn, make the value maximization of recycled polyester.
The cross section special-shaped many F full-drawn yarn of the recycled polyester product of our research and development, its performance and product quality indicator reach the high-grade polyester filament product standard of the primary PET of spinning of country, as garment material, high gear trimming cloth, also can be used as the computer embroidery silk thread, avoid the market competition of popular recycled polyester product and common continuous yarn product, to the high-end product infiltration and development.
This project regenerative piece of polyester bottle spins the research and development success of cross section special-shaped many F full-drawn yarn product in sum, and our main innovation has been invented the achievement of five aspects:
1, the draw ratio of screw extruder is changed into 1: 30 from 1: 25 of routine, is to improve and solve the important breakthrough that recycled polyester is produced full-drawn yarn.
2, one secondary filter strengthens filter area, improves filtering accuracy, has improved the degree of purity of recycled polyester melt greatly, has made innovation on recycled polyester melt filtration method.Improved the package assembly of filament spinning component simultaneously, the assembly cycle obtains prolonging.
3, improve boundling and oil, install light Network device additional, improve FDY silk or POY silk cohesive force, played tangible effect improving product quality.
4, coiling finished product technology is optimized, and adopts full-automatic accurate coiling technology domestic initiation, has improved the grade and the quality of the special-shaped many F full-drawn yarn in recycled polyester cross section greatly.
5, broken through the conventional products field on product variety, development and Design is innovated the special-shaped many F full-drawn yarn in recycled polyester cross section, technology, added value of product height, economic results in society height voluntarily.This product was listed in Zhejiang Province's trial production of new products plan in 2007, be subjected to Zhejiang Province Science and Technology Department to entrust tissue to check and accept this product item on January 24th, 2010 by sea salt science and technology office.The examination group to this product evaluation is: enterprise adopts oneself special-shaped many F polyester filament in research and development recycled polyester production cross section, material consumption and energy consumption are low, economize on resources, reduce pollution, environmental protection, meet the requirement of national development low-carbon economy, the examination group thinks that this product development is successful, has finished the requirement of provincial trial production of new products plan, agrees by checking and accepting.
In addition, need to prove, the specific embodiment described in this specification, its prescription, title that technology is named etc. can be different.Allly conceive equivalence or the simple change that described structure, feature and principle are done, be included in the protection domain of patent of the present invention according to patent of the present invention.The technical staff of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present invention or surmount the defined scope of these claims, all should belong to protection scope of the present invention.
Though the present invention with embodiment openly as above; but it is not in order to limit protection scope of the present invention; any technical staff who is familiar with this technology, change and the retouching done in not breaking away from design of the present invention and scope all should belong to protection scope of the present invention.
Claims (5)
1. the preparation method of a recycled polyester fully drawn yarn, its making step is:
A, bottle chips is transported to the storage bin of drying crystalline device top, by the control of the operated pneumatic valve on storage bin blanking pipeline blanking quantity, discharges to crystallizer, the crystallization wind-warm syndrome of bottle sheet just is controlled at 120 degree according to bottle sheet water content---160 degree;
B, bottle sheet by crystallization after,---6 hours is 150 with temperature---170 degree that are transported to drying tower drying 4, dew point carry out drying at the above dry air of negative 80 degree, the moisture content of bottle sheet is controlled at 30 after the drying---40PPM;
C, employing one secondary fine filtering apparatus, filter area is PF, and---4T---12---7 is provided with the melt booster pump between one-level and the secondary, the employing draw ratio is 1: 30 a screw rod, the screw rod homogeneous heating is divided into 7 districts, temperature is set at: the district's temperature height in the middle of being positioned at, and district's temperature at two ends is low, and the screw rod melt pressure is 110 kilograms, booster pump pressure is double centner, booster pump temperature 295 degree, condition of spinning manifold temperature 295 degree make the melt thread spray from spinnerets;
After d, the ejection of melt thread, adopt the wide air regulator of 1400*1400mm to carry out horizontal blowing cooling, wind speed is that 0.6m/s-0.8m/s, wind-warm syndrome are 28 ± 1 degree;
E, then a bundle fiber is divided into two by two groups of atomizer oil suctions, allows to reconsolidate after the full and uniform oil suction of fiber be a bundle fiber again;
F, employing full-automatic accurate up-coiler equipment are reeled;
G, adopt the one-step method production process flow process of spinning and drawing-off associating or adopt the large package list ingot position of independent temperature completely to roll up silk 180 an ingots lengthening drawing machine then, be under 1000 meters/minute the condition at draft speed, heat coiling 10 circles, cold dish is around 5 circles, adopt the typing of indirect touch hot plate then, temperature of heat plate is 80---100 degree, and hot plate temperature is 140---190 degree, obtain finished silk, finish the making of recycled polyester fully drawn yarn;
2. the preparation method of recycled polyester fully drawn yarn according to claim 1 is characterized in that: 7 district's temperature of described screw rod heating are respectively: a district 275 degree, two districts, 285 degree, three districts, 295 degree, four districts 305 are spent, five districts 305 are spent, six districts 295 are spent, seven districts 295 are spent.
3. the preparation method of recycled polyester fully drawn yarn according to claim 1, it is characterized in that: among the described step e, oil concentration is controlled at 12%, and the precursor oil content is controlled at 1%.
4. the preparation method of recycled polyester fully drawn yarn according to claim 1 is characterized in that: among the described step f, spinning silk winding speed be 3000--4500 rice/minute, every spinning cake 7.5--15 kilogram.
5. the preparation method of recycled polyester fully drawn yarn according to claim 1 is characterized in that: the high-quality bottle chips that described bottle chips screens for process.
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| CN2010102167379A CN101928992A (en) | 2010-07-02 | 2010-07-02 | Method for preparing recycled polyester fully drawn yarn |
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| CN2010102167379A CN101928992A (en) | 2010-07-02 | 2010-07-02 | Method for preparing recycled polyester fully drawn yarn |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162145A (en) * | 2011-03-30 | 2011-08-24 | 仪征市中兴涤纶纤维厂 | Method for preparing reclaimed polyester bottle chip spun fine denier moisture absorption and sweat release FDY polyester filament fibers |
| CN102277655A (en) * | 2011-08-10 | 2011-12-14 | 天津工业大学 | Manufacturing method of biodegradable starch-based fiber |
| CN102443860A (en) * | 2011-09-14 | 2012-05-09 | 泉州市盛欣纤维制品有限公司 | Production technology of polyester fiber |
| CN105177743A (en) * | 2015-09-30 | 2015-12-23 | 海盐海利环保纤维有限公司 | Method for producing fine denier and micro-fine denier flat regenerated polyester filaments by means of regenerated polyester bottle pieces |
| CN108707984A (en) * | 2018-06-28 | 2018-10-26 | 陈育龙 | Cooling means for producing terylene spinning |
| CN112011894A (en) * | 2020-09-04 | 2020-12-01 | 嘉兴学院 | Method for recycling waste polyester yarns |
| CN112176434A (en) * | 2020-09-30 | 2021-01-05 | 福建凯邦锦纶科技有限公司 | Production method of side-blown nylon filaments with diameter of more than 5dpf |
| WO2021074753A1 (en) * | 2019-10-18 | 2021-04-22 | Surendra Bhagirathmal Jiwrajka | A method of manufacturing polyester yarn from polyester waste |
| 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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2010
- 2010-07-02 CN CN2010102167379A patent/CN101928992A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162145A (en) * | 2011-03-30 | 2011-08-24 | 仪征市中兴涤纶纤维厂 | Method for preparing reclaimed polyester bottle chip spun fine denier moisture absorption and sweat release FDY polyester filament fibers |
| CN102162145B (en) * | 2011-03-30 | 2015-05-20 | 仪征市仲兴环保科技有限公司 | Method for preparing reclaimed polyester bottle chip spun fine denier moisture absorption and sweat release FDY polyester filament fibers |
| CN102277655A (en) * | 2011-08-10 | 2011-12-14 | 天津工业大学 | Manufacturing method of biodegradable starch-based fiber |
| CN102443860A (en) * | 2011-09-14 | 2012-05-09 | 泉州市盛欣纤维制品有限公司 | Production technology of polyester fiber |
| CN105177743A (en) * | 2015-09-30 | 2015-12-23 | 海盐海利环保纤维有限公司 | Method for producing fine denier and micro-fine denier flat regenerated polyester filaments by means of regenerated polyester bottle pieces |
| CN108707984A (en) * | 2018-06-28 | 2018-10-26 | 陈育龙 | Cooling means for producing terylene spinning |
| CN108707984B (en) * | 2018-06-28 | 2020-06-26 | 浙江古纤道股份有限公司 | Cooling method for producing polyester fiber spinning |
| WO2021074753A1 (en) * | 2019-10-18 | 2021-04-22 | Surendra Bhagirathmal Jiwrajka | A method of manufacturing polyester yarn from polyester waste |
| US11268212B2 (en) | 2020-02-13 | 2022-03-08 | Arun Agarwal | Partially oriented yarn (POY) generation using polyethylene terephthalate (PET) bottle flakes |
| CN112011894A (en) * | 2020-09-04 | 2020-12-01 | 嘉兴学院 | Method for recycling waste polyester yarns |
| CN112176434A (en) * | 2020-09-30 | 2021-01-05 | 福建凯邦锦纶科技有限公司 | Production method of side-blown nylon filaments with diameter of more than 5dpf |
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Open date: 20101229 |