CN112251870A - Process method for regenerating flame-retardant polyester fiber by adopting recycled polyester fiber - Google Patents
Process method for regenerating flame-retardant polyester fiber by adopting recycled polyester fiber Download PDFInfo
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- CN112251870A CN112251870A CN202010930411.6A CN202010930411A CN112251870A CN 112251870 A CN112251870 A CN 112251870A CN 202010930411 A CN202010930411 A CN 202010930411A CN 112251870 A CN112251870 A CN 112251870A
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/443—Heat-resistant, fireproof or flame-retardant yarns or threads
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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
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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
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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
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G11/00—Disintegrating fibre-containing articles to obtain fibres for re-use
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G11/00—Disintegrating fibre-containing articles to obtain fibres for re-use
- D01G11/04—Opening rags to obtain fibres for re-use
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
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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
- Y02W30/66—Disintegrating fibre-containing textile articles to obtain fibres for re-use
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Artificial Filaments (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The application discloses a process method for regenerating flame-retardant polyester fibers by using recycled polyester fibers, which is used for thoroughly cleaning waste fabrics, drying the waste fabrics after cleaning to finish the cleaning work of the waste polyester fiber fabrics, cutting the cleaned fabric, crushing after cutting, crushing the polyester fiber fabric into short staple fibers, dipping the broken short fiber with organic solvent, dissolving the mixed cotton-flax short fiber in the short fiber, washing and drying the separated polyester short fiber, melt-spinning the cleaned and dried polyester short fiber, blowing for forming after spinning, spraying fire retardant on the formed polyester fiber, drying after spraying fire retardant, so that the flame retardant is attached to the surface of the polyester fiber filament, and the application provides a process method for regenerating the flame-retardant polyester fiber by adopting the recycled polyester fiber.
Description
Technical Field
The application relates to a process method for regenerating flame-retardant polyester fibers, in particular to a process method for regenerating flame-retardant polyester fibers by adopting recycled polyester fibers.
Background
The flame-retardant fiber is also called flame-retardant fiber, is a fiber which is only smoldered in flame, does not generate flame per se, leaves the flame, and is self-extinguished due to smoldering, and is widely applied to clothes, home furnishings, decoration, non-woven fabrics, fillers and the like. Compared with common fibers, the flame-retardant fibers have obviously reduced flammability, obviously slowed combustion rate in the combustion process, quick self-extinguishment after leaving a fire source and less release of toxic smoke.
At present, no proper recovery method is available for waste polyester fiber fabric, and cotton and hemp fibers are mixed in the polyester fiber fabric, so that the recovery is troublesome. Therefore, a process for regenerating flame-retardant polyester fibers by using recycled polyester fibers is proposed to solve the above problems.
Disclosure of Invention
A process for regenerating flame-retardant polyester fibers by using recycled polyester fibers, wherein a coating method of a large-gauge warp knitted fabric comprises the following steps:
(1) thoroughly cleaning the waste fabric, and drying the cleaned waste fabric to finish the cleaning work of the waste polyester fiber fabric;
(2) cutting the cleaned fabric, crushing after cutting, and crushing the polyester fiber fabric into short staple fibers;
(3) dipping the broken short fiber filaments by using an organic solvent, dissolving the cotton-hemp fiber filaments mixed in the short fiber filaments, and washing and drying the separated polyester fiber filaments again;
(4) carrying out melt spinning on the cleaned and dried polyester fiber staple fibers, and carrying out blow molding after spinning;
(5) spraying a flame retardant on the molded polyester fiber filament, and drying after spraying the flame retardant to enable the flame retardant to be attached to the surface of the polyester fiber filament;
(6) and (3) carding and finishing the polyester fiber filaments after the flame-retardant treatment, twisting the polyester fiber filaments into a thread, cutting and finishing the twisted polyester fiber filaments, and finally rolling and storing the twisted polyester fiber filaments.
Further, the waste fabric is cleaned in the step (1), the fabric is cleaned by using alkaline cleaning solution and clear water in proportion, the fabric is soaked for 30-60 minutes before being cleaned, meanwhile, foreign matters, greasy dirt, dust and the like on the surface of the waste fabric are thoroughly treated by matching with a cleaning brush, and the treated waste fabric is thoroughly dried by using an air heater.
Further, the waste fabric in the step (1) can be polyester fiber fabric, polyester fiber and cotton fiber or fibrilia blended cotton fabric, and the products of the waste fabric comprise fabric leftover materials, curtains, table plates and bed sheets.
Further, in the step (2), a fabric cutting machine is used for cutting the fabric into strips, the length of each strip is 20-40cm, the width of each strip is 5-10cm, and then the strip fabric is crushed by a fabric crusher to be crushed into short threads, wherein the length of each short thread is 5-10 cm.
Further, in the step (3), the broken short filaments are soaked by using a copper ammonia solution, the soaking time is 1-2 hours, the soaking temperature is 25-35 ℃, the copper ammonia solution reacts with cotton fibers or hemp fibers in the short filaments, the cotton fibers or the hemp fibers are dissolved, then the dissolved short filaments are filtered, soaked in clean water for cleaning, washed again after cleaning, and the short filaments are dried by blowing by using a hot air blower after washing.
Further, in the step (4), the dried short fibers are fed into a screw extruder to be heated and melted, the short fibers in the molten state are filtered by a spinning box and distributed by a metering pump, and then are spun into tows by a spinneret plate, wherein the temperatures of a screw rod of the screw extruder and a box body of the spinning box are both 270 ℃ to 280 ℃, the aperture of the spinneret plate is 0.5mm, and the number of holes is 300. And cooling and drying the sprayed filaments by cold air, wherein the temperature of the cold air is 25-30 ℃, and the wind speed of the cold air is 4.5-5.5 m/s.
Further, in the step (5), a sprayer is used for spraying the surface of the cooled and formed polyester fiber filament, the solution sprayed by the sprayer is a flame retardant solution, the flame retardant solution is a tributyl phosphate solution, the polyester fiber filament is repeatedly rotated during spraying, the surface of the polyester fiber filament is fully dissolved in the flame retardant to be contacted, and the sprayed polyester fiber filament is dried by an air heater.
Further, in the step (5), the flame retardant coating on the surface of the polyester fiber filament after spraying and drying is detected, and the thickness and the coating area of the flame retardant coating are detected.
Further, the polyester fiber filaments which are not qualified in the step (5) are processed again in the step (5), and the polyester fiber filaments which are processed again are detected again.
And (3) further, carding the polyester fiber filaments dried in the step (6), twisting into yarns after carding, cutting and molding after twisting, and finally rolling.
The beneficial effect of this application is: the application provides a process method for regenerating flame-retardant polyester fibers by adopting recycled polyester fibers.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a flow chart of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The first embodiment is as follows:
a process for regenerating flame-retardant polyester fibers by using recycled polyester fibers, wherein a coating method of a large-gauge warp knitted fabric comprises the following steps:
(1) thoroughly cleaning the waste fabric, and drying the cleaned waste fabric to finish the cleaning work of the waste polyester fiber fabric;
(2) cutting the cleaned fabric, crushing after cutting, and crushing the polyester fiber fabric into short staple fibers;
(3) dipping the broken short fiber filaments by using an organic solvent, dissolving the cotton-hemp fiber filaments mixed in the short fiber filaments, and washing and drying the separated polyester fiber filaments again;
(4) carrying out melt spinning on the cleaned and dried polyester fiber staple fibers, and carrying out blow molding after spinning;
(5) spraying a flame retardant on the molded polyester fiber filament, and drying after spraying the flame retardant to enable the flame retardant to be attached to the surface of the polyester fiber filament;
(6) and (3) carding and finishing the polyester fiber filaments after the flame-retardant treatment, twisting the polyester fiber filaments into a thread, cutting and finishing the twisted polyester fiber filaments, and finally rolling and storing the twisted polyester fiber filaments.
Further, the waste fabric is cleaned in the step (1), the fabric is cleaned by using alkaline cleaning solution and clear water in proportion, the fabric is soaked for 30-60 minutes before being cleaned, meanwhile, foreign matters, greasy dirt, dust and the like on the surface of the waste fabric are thoroughly treated by matching with a cleaning brush, and the treated waste fabric is thoroughly dried by using an air heater.
Further, the waste fabric in the step (1) can be polyester fiber fabric, polyester fiber and cotton fiber or fibrilia blended cotton fabric, and the products of the waste fabric comprise fabric leftover materials, curtains, table plates and bed sheets.
Further, in the step (2), a fabric cutting machine is used for cutting the fabric into strips, the length of each strip is 20-40cm, the width of each strip is 5-10cm, and then the strip fabric is crushed by a fabric crusher to be crushed into short threads, wherein the length of each short thread is 5-10 cm.
Further, in the step (3), the broken short filaments are soaked by using a copper ammonia solution, the soaking time is 1-2 hours, the soaking temperature is 25-35 ℃, the copper ammonia solution reacts with cotton fibers or hemp fibers in the short filaments, the cotton fibers or the hemp fibers are dissolved, then the dissolved short filaments are filtered, soaked in clean water for cleaning, washed again after cleaning, and the short filaments are dried by blowing by using a hot air blower after washing.
Further, in the step (4), the dried short fibers are fed into a screw extruder to be heated and melted, the short fibers in the molten state are filtered by a spinning box and distributed by a metering pump, and then are spun into tows by a spinneret plate, wherein the temperatures of a screw rod of the screw extruder and a box body of the spinning box are both 270 ℃ to 280 ℃, the aperture of the spinneret plate is 0.5mm, and the number of holes is 300. And cooling and drying the sprayed filaments by cold air, wherein the temperature of the cold air is 25-30 ℃, and the wind speed of the cold air is 4.5-5.5 m/s.
Further, in the step (5), a sprayer is used for spraying the surface of the cooled and formed polyester fiber filament, the solution sprayed by the sprayer is a flame retardant solution, the flame retardant solution is a tributyl phosphate solution, the polyester fiber filament is repeatedly rotated during spraying, the surface of the polyester fiber filament is fully dissolved in the flame retardant to be contacted, and the sprayed polyester fiber filament is dried by an air heater.
Further, in the step (5), the flame retardant coating on the surface of the polyester fiber filament after spraying and drying is detected, and the thickness and the coating area of the flame retardant coating are detected.
Further, the polyester fiber filaments which are not qualified in the step (5) are processed again in the step (5), and the polyester fiber filaments which are processed again are detected again.
And (3) further, carding the polyester fiber filaments dried in the step (6), twisting into yarns after carding, cutting and molding after twisting, and finally rolling.
The method is suitable for the process method for recycling the polyester fiber fabric with high cotton and linen fiber content to regenerate the flame-retardant polyester fiber.
Example two:
a process for regenerating flame-retardant polyester fibers by using recycled polyester fibers, wherein a coating method of a large-gauge warp knitted fabric comprises the following steps:
(1) thoroughly cleaning the waste fabric, and drying the cleaned waste fabric to finish the cleaning work of the waste polyester fiber fabric;
(2) cutting the cleaned fabric, crushing after cutting, and crushing the polyester fiber fabric into short staple fibers;
(3) dipping the broken short fiber filaments by using an organic solvent, dissolving the cotton-hemp fiber filaments mixed in the short fiber filaments, and washing and drying the separated polyester fiber filaments again;
(4) carrying out melt spinning on the cleaned and dried polyester fiber staple fibers, and carrying out blow molding after spinning;
(5) spraying a flame retardant on the molded polyester fiber filament, and drying after spraying the flame retardant to enable the flame retardant to be attached to the surface of the polyester fiber filament;
(6) and (3) carding and finishing the polyester fiber filaments after the flame-retardant treatment, twisting the polyester fiber filaments into a thread, cutting and finishing the twisted polyester fiber filaments, and finally rolling and storing the twisted polyester fiber filaments.
Further, the waste fabric is cleaned in the step (1), the fabric is cleaned by using alkaline cleaning solution and clear water in proportion, the fabric is soaked for 20-40 minutes before being cleaned, meanwhile, foreign matters, greasy dirt, dust and the like on the surface of the waste fabric are thoroughly treated by matching with a cleaning brush, and the treated waste fabric is thoroughly dried by using an air heater.
Further, the waste fabric in the step (1) can be polyester fiber fabric, polyester fiber and cotton fiber or fibrilia blended cotton fabric, and the products of the waste fabric comprise fabric leftover materials, curtains, table plates and bed sheets.
Further, in the step (2), a fabric cutting machine is used for cutting the fabric into strips, the length of each strip is 20-40cm, the width of each strip is 5-10cm, and then the strip fabric is crushed by a fabric crusher to be crushed into short threads, wherein the length of each short thread is 5-10 cm.
Further, in the step (3), the broken short filaments are soaked by using a cuprammonium solution, the soaking time is 0.5-1h, the soaking temperature is 25-35 ℃, the cuprammonium solution reacts with cotton fibers or hemp fibers in the short filaments, the cotton fibers or the hemp fibers are dissolved, then the dissolved short filaments are filtered, soaked in clean water for cleaning, washed again after cleaning, and dried by blowing by using a hot air blower after washing.
Further, in the step (4), the dried short fibers are fed into a screw extruder to be heated and melted, the short fibers in the molten state are filtered by a spinning box and distributed by a metering pump, and then are spun into tows by a spinneret plate, wherein the temperatures of a screw rod of the screw extruder and a box body of the spinning box are both 270 ℃ to 280 ℃, the aperture of the spinneret plate is 0.5mm, and the number of holes is 300. And cooling and drying the sprayed filaments by cold air, wherein the temperature of the cold air is 25-30 ℃, and the wind speed of the cold air is 4.5-5.5 m/s.
Further, in the step (5), a sprayer is used for spraying the surface of the cooled and formed polyester fiber filament, the solution sprayed by the sprayer is a flame retardant solution, the flame retardant solution is a tributyl phosphate solution, the polyester fiber filament is repeatedly rotated during spraying, the surface of the polyester fiber filament is fully dissolved in the flame retardant to be contacted, and the sprayed polyester fiber filament is dried by an air heater.
Further, in the step (5), the flame retardant coating on the surface of the polyester fiber filament after spraying and drying is detected, and the thickness and the coating area of the flame retardant coating are detected.
Further, the polyester fiber filaments which are not qualified in the step (5) are processed again in the step (5), and the polyester fiber filaments which are processed again are detected again.
And (3) further, carding the polyester fiber filaments dried in the step (6), twisting into yarns after carding, cutting and molding after twisting, and finally rolling.
The method is suitable for the process method for recycling the polyester fiber fabric with high cotton and linen fiber content to regenerate the flame-retardant polyester fiber.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A process method for regenerating flame-retardant polyester fibers by adopting recycled polyester fibers is characterized by comprising the following steps of: the coating method of the large-gauge warp knitting fabric comprises the following steps:
(1) thoroughly cleaning the waste fabric, and drying the cleaned waste fabric to finish the cleaning work of the waste polyester fiber fabric;
(2) cutting the cleaned fabric, crushing after cutting, and crushing the polyester fiber fabric into short staple fibers;
(3) dipping the broken short fiber filaments by using an organic solvent, dissolving the cotton-hemp fiber filaments mixed in the short fiber filaments, and washing and drying the separated polyester fiber filaments again;
(4) carrying out melt spinning on the cleaned and dried polyester fiber staple fibers, and carrying out blow molding after spinning;
(5) spraying a flame retardant on the molded polyester fiber filament, drying after spraying the flame retardant to enable the flame retardant to be attached to the surface of the polyester fiber filament, inspecting a flame retardant coating, and reprocessing the same batch of polyester fiber filament when the inspection qualified rate is lower than 85%;
(6) and (3) carding and finishing the polyester fiber filaments after the flame-retardant treatment, twisting the polyester fiber filaments into a thread, cutting and finishing the twisted polyester fiber filaments, and finally rolling and storing the twisted polyester fiber filaments.
2. The process method for regenerating flame-retardant polyester fiber by using recycled polyester fiber as claimed in claim 1, wherein the process comprises the following steps: the waste fabric is cleaned in the step (1), the fabric is cleaned by using alkaline cleaning solution and clear water in proportion, the fabric is soaked for 30-60 minutes before being cleaned, meanwhile, foreign matters, oil stains, dust and the like on the surface of the waste fabric are thoroughly treated by matching with a cleaning brush, and the treated waste fabric is thoroughly dried by using an air heater.
3. The process method for regenerating flame-retardant polyester fiber by using recycled polyester fiber as claimed in claim 1, wherein the process comprises the following steps: the waste fabric in the step (1) can be polyester fiber fabric, polyester fiber and cotton fiber or fibrilia blended cotton fabric, and the products of the waste fabric comprise fabric leftover materials, curtains, table plates and bed sheets.
4. The process method for regenerating flame-retardant polyester fiber by using recycled polyester fiber as claimed in claim 1, wherein the process comprises the following steps: and (3) cutting the fabric into strips by using a fabric cutting machine in the step (2), wherein the length of each strip is 20-40cm, the width of each strip is 5-10cm, and then crushing the strip fabric into short yarns by using a fabric crusher, wherein the length of each short yarn is 5-10 cm.
5. The process method for regenerating flame-retardant polyester fiber by using recycled polyester fiber as claimed in claim 1, wherein the process comprises the following steps: and (3) soaking the broken short filaments in a copper ammonia solution at 25-35 ℃ for 1-2h, reacting the copper ammonia solution with cotton fibers or hemp fibers in the short filaments to dissolve the cotton fibers or the hemp fibers, filtering the dissolved short filaments, soaking the filtered short filaments in clean water to clean, washing the short filaments again after cleaning, and drying the short filaments by blowing with a hot air blower after washing.
6. The process method for regenerating flame-retardant polyester fiber by using recycled polyester fiber as claimed in claim 1, wherein the process comprises the following steps: in the step (4), the dried short fibers are fed into a screw extruder to be heated and melted, the short fibers in a melting state are filtered by a spinning box and distributed by a metering pump, and then are spun into tows by a spinneret plate, the temperatures of a screw of the screw extruder and a box body of the spinning box are both 270 ℃ to 280 ℃, the aperture of the spinneret plate is 0.5mm, the number of holes is 300, the spun long fibers are cooled and dried by cold air, the temperature of the cold air is 25 ℃ to 30 ℃, and the wind speed of the cold air is 4.5m/s to 5.5 m/s.
7. The process method for regenerating flame-retardant polyester fiber by using recycled polyester fiber as claimed in claim 1, wherein the process comprises the following steps: and (5) spraying the surface of the cooled and formed polyester fiber filament by using a spraying machine, wherein the solution sprayed by the spraying machine is a flame retardant solution, the flame retardant solution is a tributyl phosphate solution, the polyester fiber filament is repeatedly rotated during spraying, so that the surface of the polyester fiber filament is fully dissolved in the flame retardant to be contacted, and the sprayed polyester fiber filament is dried by using an air heater.
8. The process method for regenerating flame-retardant polyester fiber by using recycled polyester fiber as claimed in claim 1, wherein the process comprises the following steps: and (5) detecting the flame retardant coating on the surface of the polyester fiber filament after spraying and drying, and detecting the thickness and the coating area of the flame retardant coating.
9. The process method for regenerating flame-retardant polyester fiber by using recycled polyester fiber as claimed in claim 1, wherein the process comprises the following steps: and (3) repeating the step (5) to process again the polyester fiber filaments which are detected to be unqualified in the step (5), and detecting the polyester fiber filaments after the processing again.
10. The process method for regenerating flame-retardant polyester fiber by using recycled polyester fiber as claimed in claim 1, wherein the process comprises the following steps: and (4) carding the polyester fiber filaments dried in the step (6), twisting into yarns after carding, cutting and molding after twisting, and finally rolling.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010930411.6A CN112251870A (en) | 2020-09-07 | 2020-09-07 | Process method for regenerating flame-retardant polyester fiber by adopting recycled polyester fiber |
| LU502048A LU502048B1 (en) | 2020-09-07 | 2020-09-22 | Process for regenerating flame retardant polyester fibers using recycled polyester fibers |
| PCT/CN2020/116691 WO2022047843A1 (en) | 2020-09-07 | 2020-09-22 | Technological method for regenerating flame retardant polyester fiber by recycling polyester fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010930411.6A CN112251870A (en) | 2020-09-07 | 2020-09-07 | Process method for regenerating flame-retardant polyester fiber by adopting recycled polyester fiber |
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| CN112251870A true CN112251870A (en) | 2021-01-22 |
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| CN202010930411.6A Pending CN112251870A (en) | 2020-09-07 | 2020-09-07 | Process method for regenerating flame-retardant polyester fiber by adopting recycled polyester fiber |
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| Country | Link |
|---|---|
| CN (1) | CN112251870A (en) |
| LU (1) | LU502048B1 (en) |
| WO (1) | WO2022047843A1 (en) |
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| CN112921640A (en) * | 2021-02-01 | 2021-06-08 | 石狮锦亮织带有限公司 | Preparation method of flame-retardant woven tape |
| CN113463215A (en) * | 2021-07-12 | 2021-10-01 | 苏州贤辉新纺织科技有限公司 | Process method for spinning 5tex short fiber by recycling polyester |
| CN113914103A (en) * | 2021-09-15 | 2022-01-11 | 安徽省天助纺织科技集团股份有限公司 | Production process for manufacturing flame-retardant sailcloth bag by using waste textiles |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115198425B (en) * | 2022-07-28 | 2023-09-12 | 安徽省天助纺织科技集团股份有限公司 | Method for manufacturing heat-insulating fabric by using waste textiles |
| CN117265694B (en) * | 2023-11-21 | 2024-01-30 | 上海华灏化学有限公司 | Method for preparing bio-based PTT fiber by recycling waste fabric |
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| CN113914103A (en) * | 2021-09-15 | 2022-01-11 | 安徽省天助纺织科技集团股份有限公司 | Production process for manufacturing flame-retardant sailcloth bag by using waste textiles |
| CN113914103B (en) * | 2021-09-15 | 2024-05-07 | 安徽省天助纺织科技集团股份有限公司 | Production process for manufacturing flame-retardant canvas bag by using waste textiles |
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| LU502048B1 (en) | 2022-06-13 |
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