CN104404636A - Polylactic acid and colour master batch injection type blend spinning system - Google Patents
Polylactic acid and colour master batch injection type blend spinning system Download PDFInfo
- Publication number
- CN104404636A CN104404636A CN201410599601.9A CN201410599601A CN104404636A CN 104404636 A CN104404636 A CN 104404636A CN 201410599601 A CN201410599601 A CN 201410599601A CN 104404636 A CN104404636 A CN 104404636A
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- melt
- masterbatch
- polylactic acid
- pla
- screw extruder
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/04—Melting filament-forming substances
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/06—Feeding liquid to the spinning head
- D01D1/09—Control of pressure, temperature or feeding rate
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/04—Pigments
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention provides a polylactic acid and colour master batch injection type blend spinning system, comprising a polylactic acid dry slice conveying pipeline, a polylactic acid screw extruder, a colour master batch stock bin, a colour master batch screw extruder, a colour master batch metering pump and a spinning manifold, wherein a polylactic acid melt distributor, a colour master batch melt extrusion distribution head, a melt metering pump, a spinning component and a spinneret plate are arranged in the spinning manifold. The system is rational in design, novel in structure and high in spinning efficiency; polylactic acid and colour master batch are distributed and mixed uniformly; an original production line can just be improved, so that the production of polylactic acid colour silks in multiple colours by one machine is realized.
Description
Technical field
The invention belongs to chemical fibre spinning technical field, be specifically related to a kind of PLA and the pouring-in blend spinning system of Masterbatch.
Background technology
Chemical fibre spinning comprises the preparation of spinning melt or solution, fibre forming and winding and last handling process.Last handling process then has the stretching of as-spun fibre, heat setting to series of processes such as finished product packings.
Existing spinning process has melt spinning and solution-polymerized SBR two class.Usually the fibre-forming polymer not occurring in the molten state significantly to decompose adopts melt spinning, such as polyester fiber, polyamide fiber etc.Melt spinning process is simple, and spinning speed is high.The fibre-forming polymer that solution spinning will decompose when being applicable to melting, dissolves the spinning solution of obtained thickness in a solvent, then carries out spinning by fibre-forming polymer.By the solidification mode of the spinning solution thread extruded from capillary spinneret orifice, solution-polymerized SBR is divided into again wet spinning and dry spinning two kinds.It is lower that solution-polymerized SBR spins speed, especially wet spinning.For improving spinning capability, the spinning head that hole count is a lot of need be adopted.Spinning of dry spinning is fast higher than wet spinning, but far below melt spinning.
Existing PLA Masterbatch spining technology has used for reference chemical fibre Masterbatch spining technology; Masterbatch section is adopted quantitatively to send into screw extruder slices synthesis method pipeline by Masterbatch machine; be about to the Masterbatch that quantitatively exports and fall into solid slice to the motion of screw rod direction by Masterbatch deadweight, mixture homogeneity is not high enough.Existing Masterbatch spinning equipment structure is comparatively simple, article one, screw extruder can only produce a kind of look silk of color, melt pipe look melt injection technique can realize a spinning pump and produce a kind of look silk, and a general screw extruder configures the spinning pump of about 6.
Summary of the invention
The present invention, in order to solve weak point of the prior art, provides a kind of mixture homogeneity is good, production efficiency is high PLA and the pouring-in blend spinning system of Masterbatch.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: PLA and the pouring-in blend spinning system of Masterbatch, comprise the dry slices synthesis method pipeline of PLA, PLA screw extruder, Masterbatch feed bin, Masterbatch screw extruder, Masterbatch measuring pump and spinning manifold, in spinning manifold, be provided with polylactic acid melt distributor, Masterbatch melt extrusion dispensing head, melt metering pump, filament spinning component and spinnerets;
The outlet of the dry slices synthesis method pipeline of PLA is connected with the import of PLA screw extruder, the outlet of PLA screw extruder is connected by the import of the first pipeline with polylactic acid melt distributor, the outlet of polylactic acid melt distributor is connected with the import of melt metering pump by melt pipe, melt-stoichiometry delivery side of pump is connected with the import of filament spinning component by the 3rd pipeline, and the outlet of filament spinning component is connected with the import of spinnerets; The outlet of Masterbatch feed bin is connected with the import of Masterbatch screw extruder, the outlet of Masterbatch screw extruder is connected with the import of Masterbatch measuring pump, Masterbatch metering delivery side of pump is connected by the import of second pipe with Masterbatch melt extrusion dispensing head, and Masterbatch melt extrusion dispensing head is located at melt pipe inside; Be provided with static blender in melt pipe, static blender is between Masterbatch melt extrusion dispensing head and melt metering pump.
Described static blender comprises melt pipe body, is provided with batch mixing unit in melt pipe body; Batch mixing unit comprises the first helical baffle and the second helical baffle, melt pipe body is separated into the first semi-circular tube helical duct and the second semi-circular tube helical duct by the first helical baffle, melt pipe body is separated into the 3rd semi-circular tube helical duct and the 4th semi-circular tube helical duct by the second helical baffle, all the arranging along melt pipe body radial direction with one side of the second helical baffle and mutual to be vertically connected of the first helical baffle.
The both sides of described first helical baffle all to be arranged and mutually vertical along melt pipe body radial direction, and the both sides of the second helical baffle all to be arranged and mutually vertical along melt pipe body radial direction.
The quantity of described batch mixing unit is more than or equal to two groups, being connected with the helical baffle of adjacent one group of batch mixing unit is mutually vertical on one side of the helical baffle of one group of batch mixing unit.
Adopt technique scheme, the dry section of PLA enters in the middle of PLA screw extruder by the dry slices synthesis method pipeline of PLA, PLA is done section and is melted into polylactic acid melt by PLA screw extruder, and discharge pressure is provided, polylactic acid melt enters into polylactic acid melt distributor by the first pipeline, polylactic acid melt is sent in melt pipe by polylactic acid melt distributor again, meanwhile, Masterbatch falls into Masterbatch screw extruder from Masterbatch feed bin by deadweight, Masterbatch is melted into Masterbatch melt by Masterbatch screw extruder, and discharge pressure is provided, by Masterbatch measuring pump in certain proportion (Masterbatch section and the charge proportion of polylactic acid slice) Masterbatch melt is squeezed in melt pipe, Masterbatch melt is extruded from Masterbatch melt extrusion dispensing head, polylactic acid melt mixing in melt pipe, become coloured melt, Masterbatch melt and polylactic acid melt in melt pipe course of conveying by the mixing of static blender, by melt metering pump, mixed melt is sent in filament spinning component, finally sprayed by spinnerets and make look silk.
By a Masterbatch melt extrusion dispensing head release melt when Masterbatch melt enters in melt pipe, Masterbatch melt extrusion dispensing head is extruded in Masterbatch melt by one group of micropore, and Masterbatch melt can be evenly distributed in polylactic acid melt.
For making Masterbatch melt and polylactic acid melt mixing evenly, in melt pipe, add the static blender of array.Coloured melt in melt pipe by entering melt metering pump after the mixing of static blender, and by the spinnerets pore extrusion molding in filament spinning component, becomes PLA colored fibre after air cooling.Masterbatch measuring pump is contained in Masterbatch screw extruder discharge end, can maintain easily maintenance like this.
Because polylactic acid melt and Masterbatch melt mix not too even in melt pipe, therefore static blender is set again in melt pipe.The mixing principle of static blender is as follows: assuming that A melt and B melt are when mixing, A melt enters the first semi-circular tube helical duct, B melt enters the second semi-circular tube helical duct, when A melt and B melt enter into the second helical baffle by the first helical baffle, due to the first helical baffle while all arrange along melt pipe body radial direction with one side of the second helical baffle and mutual to be vertically connected, a part for a part for A melt and B melt is so just made to enter in the 3rd semi-circular tube helical duct, another part of A melt and another part of B melt enter in the 4th semi-circular tube helical duct.After the mixing of first group of batch mixing unit, then enter into second group of batch mixing unit, after some groups of batch mixing unit, A melt and B melt mixed evenly after directly enter into next process.
The present invention is reasonable in design, novel structure, spinning efficiency are high, and PLA and Masterbatch distribution mix, and can improve at original production line, achieves a machine polychrome sample and produces PLA look silk.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of the static blender in Fig. 1 with one group of batch mixing unit;
Fig. 3 is the explosive view of Fig. 2.
Detailed description of the invention
As shown in Figure 1, Figure 2 and Figure 3, PLA of the present invention and the pouring-in blend spinning system of Masterbatch, comprise the dry slices synthesis method pipeline 12 of PLA, PLA screw extruder 13, Masterbatch feed bin 14, Masterbatch screw extruder 15, Masterbatch measuring pump 16 and spinning manifold 17, in spinning manifold 17, be provided with polylactic acid melt distributor 18, Masterbatch melt extrusion dispensing head 19, melt metering pump 20, filament spinning component 10 and spinnerets 11;
The outlet of the dry slices synthesis method pipeline 12 of PLA is connected with the import of PLA screw extruder 13, the outlet of PLA screw extruder 13 is connected with the import of polylactic acid melt distributor 18 by the first pipeline 21, the outlet of polylactic acid melt distributor 18 is connected by the import of melt pipe 22 with melt metering pump 20, the outlet of melt metering pump 20 is connected with the import of filament spinning component 10 by the 3rd pipeline 23, and the outlet of filament spinning component 10 is connected with the import of spinnerets 11; The outlet of Masterbatch feed bin 14 is connected with the import of Masterbatch screw extruder 15, the outlet of Masterbatch screw extruder 15 is connected with the import of Masterbatch measuring pump 16, the outlet of Masterbatch measuring pump 16 is connected by the import of second pipe 24 with Masterbatch melt extrusion dispensing head 19, and it is inner that Masterbatch melt extrusion dispensing head 19 is located at melt pipe 22; Be provided with static blender 25 in melt pipe 22, static blender 25 is between Masterbatch melt extrusion dispensing head 19 and melt metering pump 20.
Static blender 25 comprises melt pipe body 1, is provided with batch mixing unit in melt pipe body 1; Batch mixing unit comprises the first helical baffle 2 and the second helical baffle 3, melt pipe body 1 is separated into the first semi-circular tube helical duct 4 and the second semi-circular tube helical duct 5 by the first helical baffle 2, what melt pipe body 1 was separated into the 3rd semi-circular tube helical duct 6 and the 4th semi-circular tube helical duct 7, first helical baffle 2 by the second helical baffle 3 all arranges along melt pipe body 1 radial direction with one side of the second helical baffle 3 and mutual to be vertically connected.
The both sides of the first helical baffle 2 all to be arranged and mutually vertical along melt pipe body 1 radial direction, and the both sides of the second helical baffle 3 all to be arranged and mutually vertical along melt pipe body 1 radial direction.
In order to improve the uniformity of mixing, the quantity that can arrange batch mixing unit is more than or equal to two groups, being connected with the helical baffle of adjacent one group of batch mixing unit is mutually vertical on one side of the helical baffle of one group of batch mixing unit.
PLA screw extruder 13 in the middle of the present invention, Masterbatch screw extruder 15, Masterbatch measuring pump 16, polylactic acid melt distributor 18, melt metering pump 20, filament spinning component 10 and spinnerets 11 are existing mature technology, and concrete structure repeats no more.
Specific works process of the present invention is as follows: the dry section of PLA enters in the middle of PLA screw extruder 13 by the dry slices synthesis method pipeline 12 of PLA, PLA is done section and is melted into polylactic acid melt by PLA screw extruder 13, and discharge pressure is provided, polylactic acid melt enters into polylactic acid melt distributor by the first pipeline 21, polylactic acid melt is sent in melt pipe 22 by polylactic acid melt distributor again, meanwhile, Masterbatch falls into Masterbatch screw extruder from Masterbatch feed bin 14 by deadweight, Masterbatch is melted into Masterbatch melt by Masterbatch screw extruder 15, and discharge pressure is provided, by Masterbatch measuring pump 16 in certain proportion (Masterbatch section and the charge proportion of polylactic acid slice) Masterbatch melt is squeezed in melt pipe 22, Masterbatch melt is extruded from Masterbatch melt extrusion dispensing head 19, polylactic acid melt mixing in melt pipe 22, become coloured melt, Masterbatch melt and polylactic acid melt in melt pipe 22 course of conveying by the mixing of static blender 25, by melt metering pump 20, mixed melt is sent in filament spinning component 10, finally sprayed by spinnerets 11 and make look silk.
Melt is discharged by a Masterbatch melt extrusion dispensing head 19 when Masterbatch melt enters in melt pipe 22, Masterbatch melt extrusion dispensing head 19 is extruded in Masterbatch melt by one group of micropore, and Masterbatch melt can be evenly distributed in polylactic acid melt.
For making Masterbatch melt and polylactic acid melt mixing evenly, in melt pipe 22, add the static blender 25 of array.Coloured melt in melt pipe 22 by entering melt metering pump 20 after the mixing of static blender 25, and by the spinnerets 11 pore extrusion molding in filament spinning component 10, becomes PLA colored fibre after air cooling.Masterbatch measuring pump 16 is contained in Masterbatch screw extruder 15 discharge end, can maintain easily maintenance like this.
Because polylactic acid melt and Masterbatch melt mix not too even in melt pipe 22, therefore static blender 25 is set in melt pipe 22 again.The mixing principle of static blender 25 is as follows: assuming that A melt and B melt are when mixing, A melt enters the first semi-circular tube helical duct 4, B melt enters the second semi-circular tube helical duct 5, when A melt and B melt enter into the second helical baffle 3 by the first helical baffle 2, due to the first helical baffle 2 while all arrange along melt pipe body 1 radial direction with one side of the second helical baffle 3 and mutual to be vertically connected, a part for a part for A melt and B melt is so just made to enter in the 3rd semi-circular tube helical duct 6, another part of A melt and another part of B melt enter in the 4th semi-circular tube helical duct 7.After the mixing of first group of batch mixing unit, then enter into second group of batch mixing unit, after some groups of batch mixing unit, A melt and B melt mixed evenly after directly enter into next process.
Above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: still can modify to the present invention or equivalent replacement, and not departing from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (4)
1. PLA and the pouring-in blend spinning system of Masterbatch, it is characterized in that: comprise the dry slices synthesis method pipeline of PLA, PLA screw extruder, Masterbatch feed bin, Masterbatch screw extruder, Masterbatch measuring pump and spinning manifold, in spinning manifold, be provided with polylactic acid melt distributor, Masterbatch melt extrusion dispensing head, melt metering pump, filament spinning component and spinnerets;
The outlet of the dry slices synthesis method pipeline of PLA is connected with the import of PLA screw extruder, the outlet of PLA screw extruder is connected by the import of the first pipeline with polylactic acid melt distributor, the outlet of polylactic acid melt distributor is connected with the import of melt metering pump by melt pipe, melt-stoichiometry delivery side of pump is connected with the import of filament spinning component by the 3rd pipeline, and the outlet of filament spinning component is connected with the import of spinnerets; The outlet of Masterbatch feed bin is connected with the import of Masterbatch screw extruder, the outlet of Masterbatch screw extruder is connected with the import of Masterbatch measuring pump, Masterbatch metering delivery side of pump is connected by the import of second pipe with Masterbatch melt extrusion dispensing head, and Masterbatch melt extrusion dispensing head is located at melt pipe inside; Be provided with static blender in melt pipe, static blender is between Masterbatch melt extrusion dispensing head and melt metering pump.
2. PLA according to claim 1 and the pouring-in blend spinning system of Masterbatch, is characterized in that: described static blender comprises melt pipe body, is provided with batch mixing unit in melt pipe body; Batch mixing unit comprises the first helical baffle and the second helical baffle, melt pipe body is separated into the first semi-circular tube helical duct and the second semi-circular tube helical duct by the first helical baffle, melt pipe body is separated into the 3rd semi-circular tube helical duct and the 4th semi-circular tube helical duct by the second helical baffle, all the arranging along melt pipe body radial direction with one side of the second helical baffle and mutual to be vertically connected of the first helical baffle.
3. PLA according to claim 2 and the pouring-in blend spinning system of Masterbatch, it is characterized in that: the both sides of described first helical baffle all to be arranged and mutually vertical along melt pipe body radial direction, the both sides of the second helical baffle all to be arranged and mutually vertical along melt pipe body radial direction.
4. PLA according to claim 3 and the pouring-in blend spinning system of Masterbatch, it is characterized in that: the quantity of described batch mixing unit is more than or equal to two groups, being connected with the helical baffle of adjacent one group of batch mixing unit is mutually vertical on one side of the helical baffle of one group of batch mixing unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410599601.9A CN104404636B (en) | 2014-10-31 | 2014-10-31 | Polylactic acid and the pouring-in blend spinning system of Masterbatch |
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| CN201410599601.9A CN104404636B (en) | 2014-10-31 | 2014-10-31 | Polylactic acid and the pouring-in blend spinning system of Masterbatch |
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| CN104404636A true CN104404636A (en) | 2015-03-11 |
| CN104404636B CN104404636B (en) | 2016-07-13 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104862809A (en) * | 2015-05-21 | 2015-08-26 | 苏州富莱克斯氨纶有限公司 | Preparation method of colored melt-spun spandex |
| CN105525369A (en) * | 2016-01-30 | 2016-04-27 | 河南省龙都生物科技有限公司 | System for producing fibers from bamboo charcoal micro powder and polylactic acid slices |
| CN105543992A (en) * | 2016-01-30 | 2016-05-04 | 河南省龙都生物科技有限公司 | Bamboo charcoal polylactic acid particle spinning system |
| CN105603551A (en) * | 2016-01-30 | 2016-05-25 | 河南省龙都生物科技有限公司 | Production system for bamboo charcoal and polylactic acid chips |
| CN105603550A (en) * | 2016-01-30 | 2016-05-25 | 河南省龙都生物科技有限公司 | Direct spinning system for mixed melt of bamboo charcoal and polylactic acid |
| CN105714391A (en) * | 2016-04-15 | 2016-06-29 | 河南省龙都生物科技有限公司 | Polylactic acid double-component composite fiber spinning process |
| CN105734701A (en) * | 2016-04-15 | 2016-07-06 | 河南省龙都生物科技有限公司 | Extinction spinning production process for polylactic acid slice with titanium dioxide |
| CN105734702A (en) * | 2016-04-15 | 2016-07-06 | 河南省龙都生物科技有限公司 | Direct spinning system for polylactic acid extinction fiber |
| CN105803565A (en) * | 2016-04-15 | 2016-07-27 | 河南省龙都生物科技有限公司 | Polylactic acid delustering fiber direct spinning production technology |
| CN109629029A (en) * | 2018-12-21 | 2019-04-16 | 张家港市科达化纤有限公司 | A kind of production method of water repellent anti-pollution type METHOD FOR POLYPROPYLENE BCF long filament |
| CN110922613A (en) * | 2019-11-29 | 2020-03-27 | 安徽丰原福泰来聚乳酸有限公司 | Colored polylactic acid particles and preparation method thereof |
| CN111321482A (en) * | 2020-02-28 | 2020-06-23 | 青岛叒米科技有限公司 | Production process and device of colored polylactic acid filament yarn |
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| CN102995151A (en) * | 2012-12-17 | 2013-03-27 | 浙江华欣新材料股份有限公司 | Method for producing color composite polyester yarn through one step |
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| CN2612677Y (en) * | 2003-03-20 | 2004-04-21 | 江苏南黄海实业股份有限公司 | Melt extrusion spandex dismounting type spinning box |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104862809A (en) * | 2015-05-21 | 2015-08-26 | 苏州富莱克斯氨纶有限公司 | Preparation method of colored melt-spun spandex |
| CN105525369B (en) * | 2016-01-30 | 2018-01-30 | 河南省龙都生物科技有限公司 | Bamboo charcoal micropowder polylactic acid slice produces fiber system |
| CN105603550B (en) * | 2016-01-30 | 2017-11-10 | 河南省龙都生物科技有限公司 | Bamboo charcoal PLA blend melt direct fabrics system |
| CN105603551A (en) * | 2016-01-30 | 2016-05-25 | 河南省龙都生物科技有限公司 | Production system for bamboo charcoal and polylactic acid chips |
| CN105603550A (en) * | 2016-01-30 | 2016-05-25 | 河南省龙都生物科技有限公司 | Direct spinning system for mixed melt of bamboo charcoal and polylactic acid |
| CN105525369A (en) * | 2016-01-30 | 2016-04-27 | 河南省龙都生物科技有限公司 | System for producing fibers from bamboo charcoal micro powder and polylactic acid slices |
| CN105603551B (en) * | 2016-01-30 | 2017-11-14 | 河南省龙都生物科技有限公司 | Bamboo charcoal polylactic acid slice manufacturing system |
| CN105543992A (en) * | 2016-01-30 | 2016-05-04 | 河南省龙都生物科技有限公司 | Bamboo charcoal polylactic acid particle spinning system |
| CN105734702B (en) * | 2016-04-15 | 2017-11-10 | 河南省龙都生物科技有限公司 | PLA delustering fibre direct fabrics system |
| CN105714391A (en) * | 2016-04-15 | 2016-06-29 | 河南省龙都生物科技有限公司 | Polylactic acid double-component composite fiber spinning process |
| CN105734702A (en) * | 2016-04-15 | 2016-07-06 | 河南省龙都生物科技有限公司 | Direct spinning system for polylactic acid extinction fiber |
| CN105734701A (en) * | 2016-04-15 | 2016-07-06 | 河南省龙都生物科技有限公司 | Extinction spinning production process for polylactic acid slice with titanium dioxide |
| CN105803565A (en) * | 2016-04-15 | 2016-07-27 | 河南省龙都生物科技有限公司 | Polylactic acid delustering fiber direct spinning production technology |
| CN105803565B (en) * | 2016-04-15 | 2018-02-16 | 河南省龙都生物科技有限公司 | PLA delustering fibre direct fabrics production technology |
| CN109629029A (en) * | 2018-12-21 | 2019-04-16 | 张家港市科达化纤有限公司 | A kind of production method of water repellent anti-pollution type METHOD FOR POLYPROPYLENE BCF long filament |
| CN110922613A (en) * | 2019-11-29 | 2020-03-27 | 安徽丰原福泰来聚乳酸有限公司 | Colored polylactic acid particles and preparation method thereof |
| CN111321482A (en) * | 2020-02-28 | 2020-06-23 | 青岛叒米科技有限公司 | Production process and device of colored polylactic acid filament yarn |
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| CN104404636B (en) | 2016-07-13 |
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