CN114717671A - Preparation method of biodegradable regenerated polyester staple fiber - Google Patents
Preparation method of biodegradable regenerated polyester staple fiber Download PDFInfo
- Publication number
- CN114717671A CN114717671A CN202110007825.6A CN202110007825A CN114717671A CN 114717671 A CN114717671 A CN 114717671A CN 202110007825 A CN202110007825 A CN 202110007825A CN 114717671 A CN114717671 A CN 114717671A
- Authority
- CN
- China
- Prior art keywords
- polyester staple
- temperature
- regenerated polyester
- staple fiber
- pet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
-
- 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
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
-
- 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
- D01D5/096—Humidity control, or oiling, of filaments, threads or the like, leaving the spinnerettes
-
- 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
- D01D5/12—Stretch-spinning methods
- D01D5/14—Stretch-spinning methods with flowing liquid or gaseous stretching media, e.g. solution-blowing
-
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Abstract
The invention belongs to the field of polyester staple fiber preparation, and discloses a preparation method of biodegradable regenerated polyester staple fiber, which comprises the following steps: 1) primarily cleaning a recycled PET plastic bottle, and cutting the PET plastic bottle into PET slices; 2) and drying the prepared PET slices by a vacuum rotary drum, putting the dried PET slices into a spinning bin, adding the biodegradable master batch, the bubble material, the slurry and other recovered PET materials, and uniformly mixing. According to the scheme, the recycled PET plastic bottles are subjected to cleaning slicing, drying, melting, spinning, cooling, oiling and winding, silk receiving of the silk containing barrel, bundling, and time-lapse balancing of the constant temperature and humidity chamber, and then are subjected to water bath drafting, steam drafting, curling, relaxation heat setting, and finally cutting and packaging to prepare biodegradable regenerated polyester staple fibers, so that the problem of environmental pollution caused by the waste PET plastic bottles can be solved, and limited resources can be reused.
Description
Technical Field
The invention relates to the technical field of polyester staple fiber preparation, in particular to a preparation method of biodegradable regenerated polyester staple fiber.
Background
From ancient times to the present, clothes and household textiles are the most basic requirements of human beings, and among various clothes and household textiles, polyester products are favored by more consumers due to the advantages of good wrinkle resistance, shape retention, easiness in washing and quick drying, good washing and wearing performance and the like. Therefore, the polyester staple fiber becomes an essential production raw material in the production of clothes and household textiles.
While the aromatic polyester represented by PET is widely applied to the chemical fiber and packaging industries due to the excellent chemical stability, better mechanical property, sanitary property, transparency and the like of the aromatic polyester, but the waste PET plastic bottles are difficult to naturally degrade in nature, the performance of the waste PET plastic bottles is only 50% lost in the environment with the humidity of 45% -100% and the temperature of 20 ℃ for 30-40 years, so that a great amount of PET waste brings huge pressure to the environment,
in order to respond to the social call for the recycling economy and sustainable development, the waste PET plastic bottles are effectively utilized to solve the problem of environmental pollution caused by the waste PET plastic bottles, and limited resources can be reused, so that the preparation method of the biodegradable regenerated polyester staple fibers is provided, the waste PET is recycled, the problem of environmental pollution can be solved, and the resources can be fully utilized.
Disclosure of Invention
Technical problem to be solved
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a preparation method of biodegradable regenerated polyester staple fibers, and solves the problems.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme:
a preparation method of biodegradable regenerated polyester staple fibers comprises the following steps:
1) primarily cleaning a recycled PET plastic bottle, and cutting the PET plastic bottle into PET slices;
2) drying the prepared PET slices by a vacuum rotary drum, putting the dried PET slices into a spinning bin, adding the biodegradable master batch, the bubble material, the slurry and other PET reclaimed materials, and uniformly mixing;
3) extruding and melting by a screw extruder, filtering by a filter, conveying to a spinning box after filtering, distributing in a metering pump, conveying the material distributed in the metering pump in a molten state to a spinneret plate for spinning to obtain nascent fiber;
4) cooling and forming, namely blowing and cooling the spun yarns sprayed from the spinneret plate by using a circular blowing device to form the spun yarns to obtain nascent fibers;
5) and sequentially performing oiling winding, yarn receiving in a yarn containing barrel, bundling, time balancing in a constant temperature and humidity chamber, water bath drafting, steam drafting, curling, relaxation heat setting, cutting and packaging to obtain the biodegradable regenerated polyester staple fiber.
Preferably, the recycled PET plastic bottles of step 1) are classified according to type and color, and labels and bottle caps are removed.
Preferably, the drying temperature in the vacuum drum drying of the step 2) is 90-110 ℃, the vacuum degree is more than 0.098MPa, and the saturation drying time is 5-8 hours.
Preferably, the temperature at the spinneret in step 2) is 270-300 ℃.
Preferably, the circular blowing temperature of the circular blowing device is 14-20 ℃, the wind pressure is 1200-1800Pa, and the rheumatism is 70-75%.
Preferably, the nascent fiber tows are immersed in oil by a composite oil agent with the temperature of 75 ℃ and the concentration of 3-5 wt% for 70-100min during oiling and winding.
Preferably, the screw temperature of the screw extruder is 260-275 ℃, and the temperature of the discharge head is 265-273 ℃.
Preferably, the water bath drafting multiple is 2.9, and the water bath drafting temperature is controlled to be 62-68 ℃; the steam drawing multiple is 1.3, and the drawing temperature is controlled to be 110-120 ℃.
Preferably, the relaxation heat setting is carried out by a relaxation heat setting oven, the relaxation heat setting oven is divided into 6 heating zones, the temperature is controlled to be 110-140 ℃, and the drying time is 30-40 min.
(III) advantageous effects
Compared with the prior art, the invention provides a preparation method of biodegradable regenerated polyester staple fiber, which has the following beneficial effects:
(1) according to the scheme, the recycled PET plastic bottles are subjected to cleaning slicing, drying, melting, spinning, cooling, oiling winding, filament receiving of the filament containing barrel, bundling and time-lapse balancing of the constant temperature and humidity chamber, and then subjected to water bath drafting, steam drafting, curling, relaxation heat setting, cutting and packaging to prepare biodegradable regenerated polyester staple fibers, so that the problem of environmental pollution caused by the waste PET plastic bottles can be solved, and limited resources can be reused.
(2) After the service life of the prepared fiber is finished, in the environment rich in microorganisms such as a refuse landfill or a composting site and the like, because the added biodegradable master batch reduces the compactness and the crystallinity of the fiber molecular chain structure, enzymes secreted by the microorganisms can easily invade the surface of the fiber to generate intermediate products with water solubility and relatively low molecular mass, and the intermediate products can be easily metabolized and absorbed by the microorganisms to finally generate carbon dioxide and water, return to the nature and realize the biological degradation in the true sense.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
a preparation method of biodegradable regenerated polyester staple fibers comprises the following steps:
1) classifying the recycled PET plastic bottles according to types and colors, removing labels and bottle caps, and cutting the PET plastic bottles into PET slices after primary cleaning;
2) drying the prepared PET slices by a vacuum drum at the drying temperature of 90 ℃, the vacuum degree of more than 0.098MPa, and the saturation drying time of 8 hours, putting the dried PET slices into a spinning bin, adding the biodegradable master batch, the bubble material, the slurry and other PET reclaimed materials, and uniformly mixing;
3) extruding and melting by a screw extruder, wherein the screw temperature of the screw extruder is 260 ℃, the temperature of a discharge head is set to be 265 ℃, filtering by a filter, conveying to a spinning box after filtering, distributing in a metering pump, conveying the material distributed in the metering pump in a molten state to a spinneret plate for spinning, and the temperature of the spinneret plate is 270 ℃ to obtain nascent fiber;
4) cooling and forming, namely blowing and cooling the spun yarns sprayed from the spinneret plate by using a circular blowing device to form the spun yarns to obtain nascent fibers, wherein the circular blowing temperature of the circular blowing device is 14 ℃, and the wind pressure is 1200Pa and the wind speed is 70%;
5) sequentially performing oiling winding, yarn receiving in a yarn containing barrel, bundling, time balancing in a constant temperature and humidity chamber, water bath drafting, steam drafting, curling, relaxation heat setting, cutting and packaging to obtain biodegradable regenerated polyester staple fibers;
preferably, the nascent fiber tow during oiling and winding is immersed in composite oil with the temperature of 75 ℃ and the concentration of 3 wt%, and the oil immersion time is 70 min.
Preferably, the water bath drafting multiple is 2.9, and the water bath drafting temperature is controlled to be 6 ℃; the steam drafting multiple is 1.3, and the drafting temperature is controlled to be 110 ℃.
Preferably, the relaxation heat setting is carried out by a relaxation heat setting oven which is divided into 6 heating zones, the temperature is controlled to be 110 ℃, and the drying time is 30 min.
Example two:
a preparation method of biodegradable regenerated polyester staple fibers comprises the following steps:
1) classifying the recycled PET plastic bottles according to types and colors, removing labels and bottle caps, and cutting the PET plastic bottles into PET slices after primary cleaning;
2) drying the prepared PET slices by a vacuum drum at the drying temperature of 100 ℃, the vacuum degree of more than 0.098MPa and the saturation drying time of 6.5 hours, putting the dried PET slices into a spinning bin, adding the biodegradable master batch, the bubble material, the slurry and other PET reclaimed materials, and uniformly mixing;
3) extruding and melting by a screw extruder, wherein the temperature of a screw of the screw extruder is 270 ℃, the temperature of a discharge head is set to 269 ℃, filtering by a filter, conveying into a spinning box after filtering, distributing in a metering pump, conveying the material distributed in the metering pump in a molten state to a spinneret plate for spinning, and the temperature of the spinneret plate is 285 ℃ to obtain nascent fiber;
4) cooling and forming, namely blowing and cooling the spun yarns sprayed from the spinneret plate by using a circular blowing device to form the spun yarns to obtain nascent fibers, wherein the circular blowing temperature of the circular blowing device is 17 ℃, the wind pressure is 1600Pa, and the wind dampness is 72.5%;
5) sequentially performing oiling winding, yarn receiving in a yarn containing barrel, bundling, time balancing in a constant temperature and humidity chamber, water bath drafting, steam drafting, curling, relaxation heat setting, cutting and packaging to obtain biodegradable regenerated polyester staple fibers;
preferably, the nascent fiber tows are immersed in oil by a composite oil agent with the temperature of 75 ℃ and the concentration of 4 wt% during oiling winding, and the oil immersion time is 85 min.
Preferably, the water bath drafting multiple is 2.9, and the water bath drafting temperature is controlled to be 65 ℃; the steam draft multiple is 1.3, and the draft temperature is controlled to be 115 ℃.
Preferably, the relaxation heat setting is carried out by a relaxation heat setting oven which is divided into 6 heating zones, the temperature is controlled to be 125 ℃, and the drying time is 35 min.
Example three:
a preparation method of biodegradable regenerated polyester staple fibers comprises the following steps:
1) classifying the recycled PET plastic bottles according to types and colors, removing labels and bottle caps, and cutting the PET plastic bottles into PET slices after primary cleaning;
2) drying the prepared PET slices by a vacuum drum at the drying temperature of 110 ℃, the vacuum degree of more than 0.098MPa, and the saturation drying time of 5 hours, putting the dried PET slices into a spinning bin, adding the biodegradable master batch, the bubble material, the slurry and other PET reclaimed materials, and uniformly mixing;
3) extruding and melting by a screw extruder, wherein the temperature of a screw of the screw extruder is 275 ℃, the temperature of a discharge head is set to be 273 ℃, filtering by a filter, conveying into a spinning box after filtering, distributing in a metering pump, conveying the material distributed in the metering pump in a molten state to a spinneret plate for spinning, and the temperature of the spinneret plate is 300 ℃ to obtain nascent fiber;
4) cooling and forming, namely blowing and cooling the spun yarns sprayed from the spinneret plate by using a circular blowing device to form the spun yarns to obtain nascent fibers, wherein the circular blowing temperature of the circular blowing device is 20 ℃, the wind pressure is 1800Pa, and the wind speed is 75%;
5) sequentially performing oiling winding, yarn receiving in a yarn containing barrel, bundling, time balancing in a constant temperature and humidity chamber, water bath drafting, steam drafting, curling, relaxation heat setting, cutting and packaging to obtain biodegradable regenerated polyester staple fibers;
further, the nascent fiber tows are immersed in oil by a composite oil agent with the temperature of 75 ℃ and the concentration of 5 wt% for 100min during oiling and winding.
Further, the water bath drafting multiple is 2.9, and the water bath drafting temperature is controlled to be 68 ℃; the steam drafting multiple is 1.3, and the drafting temperature is controlled to be 120 ℃.
Further, the relaxation heat setting is carried out by a relaxation heat setting oven which is divided into 6 heating zones, the temperature is controlled to be 140 ℃, and the drying time is 40 min.
In summary, the following steps: the scheme is that the recycled PET plastic bottles are cleaned, sliced, dried, melted, spun, cooled, oiled and wound, the filaments are collected by a filament containing barrel, bunched, and subjected to time-balanced constant temperature and humidity chamber, water bath drafting, steam drafting, curling, relaxation heat setting, cutting and packaging to prepare the biodegradable regenerated polyester staple fibers, the waste PET plastic bottles are effectively utilized, the problem of environmental pollution caused by the waste PET plastic bottles can be solved, limited resources can be reused, after the service life of the prepared fibers is finished, in the environment rich in microorganisms such as a garbage landfill or a composting site and the like, due to the addition of the biodegradable master batches, the fiber molecular chain structure compactness and the crystallinity are reduced, enzymes secreted by the microorganisms easily invade the fiber surface, intermediate products with water solubility and relatively low molecular mass are generated, and the intermediate products are easily absorbed by the metabolism of the microorganisms and finally generate carbon dioxide and water, returning to nature and realizing the biological degradation in the real sense.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (9)
1. A preparation method of biodegradable regenerated polyester staple fiber is characterized by comprising the following steps: the method comprises the following steps:
1) primarily cleaning a recycled PET plastic bottle, and cutting the PET plastic bottle into PET slices;
2) drying the prepared PET slices by a vacuum rotary drum, putting the dried PET slices into a spinning bin, adding the biodegradable master batch, the bubble material, the slurry and other PET reclaimed materials, and uniformly mixing;
3) extruding and melting by a screw extruder, filtering by a filter, conveying to a spinning box after filtering, distributing in a metering pump, conveying the material distributed in the metering pump in a molten state to a spinneret plate for spinning to obtain nascent fiber;
4) cooling and forming, namely blowing and cooling the spun yarns sprayed from the spinneret plate by using a circular blowing device to form the spun yarns to obtain nascent fibers;
5) and sequentially performing oiling winding, yarn receiving in a yarn containing barrel, bundling, time balancing in a constant temperature and humidity chamber, water bath drafting, steam drafting, curling, relaxation heat setting, cutting and packaging to obtain the biodegradable regenerated polyester staple fiber.
2. The method for preparing biodegradable regenerated polyester staple fiber according to claim 1, characterized in that: the recycled PET plastic bottles in the step 1) are classified according to types and colors, and labels and bottle caps are removed.
3. The method for preparing biodegradable regenerated polyester staple fiber according to claim 1, characterized in that: and 2) drying in the vacuum drum drying process at the drying temperature of 90-110 ℃, the vacuum degree of more than 0.098MPa, and the saturated drying time of 5-8 hours.
4. The method for preparing biodegradable regenerated polyester staple fiber according to claim 1, characterized in that: the temperature of the spinneret plate in the step 2) is 270-300 ℃.
5. The method for preparing biodegradable regenerated polyester staple fiber according to claim 1, characterized in that: the circular blowing temperature of the circular blowing device is 14-20 ℃, the wind pressure is 1200-1800Pa, and the rheumatism is 70-75%.
6. The method for preparing biodegradable regenerated polyester staple fiber according to claim 1, characterized in that: and during oiling and winding, the nascent fiber tows are immersed in composite oil with the temperature of 75 ℃ and the concentration of 3-5 wt% for 70-100 min.
7. The method for preparing biodegradable regenerated polyester staple fiber according to claim 1, characterized in that: the screw temperature of the screw extruder is 260-275 ℃, and the temperature of the discharge head is 265-273 ℃.
8. The method for preparing biodegradable regenerated polyester staple fiber according to claim 1, characterized in that: the water bath drafting multiple is 2.9, and the water bath drafting temperature is controlled to be 62-68 ℃; the steam drafting multiple is 1.3, and the drafting temperature is controlled to be 110-120 ℃.
9. The method for preparing biodegradable regenerated polyester staple fiber according to claim 1, characterized in that: the relaxation heat setting is carried out by a relaxation heat setting oven which is divided into 6 heating zones, the temperature is controlled to be 110-140 ℃, and the drying time is 30-40 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110007825.6A CN114717671A (en) | 2021-01-05 | 2021-01-05 | Preparation method of biodegradable regenerated polyester staple fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110007825.6A CN114717671A (en) | 2021-01-05 | 2021-01-05 | Preparation method of biodegradable regenerated polyester staple fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114717671A true CN114717671A (en) | 2022-07-08 |
Family
ID=82234878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110007825.6A Pending CN114717671A (en) | 2021-01-05 | 2021-01-05 | Preparation method of biodegradable regenerated polyester staple fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114717671A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030111171A1 (en) * | 2002-09-09 | 2003-06-19 | Casey Paul Karol | Poly(trimethylene) terephthalate texile staple production |
| CN102828276A (en) * | 2012-09-04 | 2012-12-19 | 福建鑫华股份有限公司 | Preparation method of biodegradable regenerated polyester staple fibers |
| CN105887232A (en) * | 2016-06-27 | 2016-08-24 | 福建鑫华股份有限公司 | Method for preparing special black polyester short fiber for wire harness material |
-
2021
- 2021-01-05 CN CN202110007825.6A patent/CN114717671A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030111171A1 (en) * | 2002-09-09 | 2003-06-19 | Casey Paul Karol | Poly(trimethylene) terephthalate texile staple production |
| CN102828276A (en) * | 2012-09-04 | 2012-12-19 | 福建鑫华股份有限公司 | Preparation method of biodegradable regenerated polyester staple fibers |
| CN105887232A (en) * | 2016-06-27 | 2016-08-24 | 福建鑫华股份有限公司 | Method for preparing special black polyester short fiber for wire harness material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102586933B (en) | Method for preparing polyester staple fibers by using waste polyester raw material | |
| CN103305960B (en) | Method for manufacturing polyester staple fibers through recycled polyester bottles | |
| CN101857981B (en) | Process for producing nanometer bamboo carbon fiber by adopting polylactic acid group | |
| CN105525375A (en) | Method for preparing polyester staple fibers from waste polyester fibers | |
| CN104532387A (en) | Low-melting-point colored special-shaped polyester filament and preparation method thereof | |
| CN102899729A (en) | Method for processing regenerated polyester staple fiber by using waste polyester textile | |
| CN102071509A (en) | Regeneration technique for jean cotton cloth | |
| CN102926024A (en) | Degradable polylactic acid fiber for wig and production process for polylactic acid fiber | |
| CN102995160A (en) | PLA (Poly Lactic Acid) and PHBV (Poly Hydroxyl Butyrate Valerate) blending modification polyester filament and preparation method thereof | |
| CN113930864A (en) | Regenerated colored polyester staple fiber produced by waste polyester foam chemical method | |
| CN107447521A (en) | A kind of renovation process of waste and old linen-cotton cloth | |
| CN104928930B (en) | A kind of method utilizing waste plastic bottle to prepare super cotton like fabric | |
| CN112176461A (en) | Preparation method of recycled cotton fibers and preparation method of yarns thereof | |
| CN103882534A (en) | Production process for utilizing waste bottle chips to produce high-grade core materials for textile use | |
| CN111235688A (en) | Biodegradable polyester fiber and preparation method thereof | |
| CN102912461A (en) | Method for producing antibacterial fire-resistant polyester filaments by utilizing recycled polyester bottle chips | |
| CN113062006B (en) | Environment-friendly composite textile material and preparation method thereof | |
| CN114717671A (en) | Preparation method of biodegradable regenerated polyester staple fiber | |
| CN101130901A (en) | Method for producing two/three-dimensional spatial fibre using reprocessed plastic | |
| CN216639734U (en) | Preparation equipment for regenerated parallel composite down-like polyester fiber | |
| CN102534844B (en) | Production technology of non-fluorescence down-like polyester staple fibers | |
| CN112458566A (en) | Manufacturing method of antibacterial polyester staple fiber | |
| CN113550036A (en) | Bulked yarn and preparation method thereof | |
| CN113846387A (en) | Preparation process of waste cloth head foam spun monofilament 100D black polyester staple fiber | |
| CN113957555A (en) | Preparation method and equipment of regenerated parallel composite down-like polyester fiber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |