CN114230858B - Ocean recovery fabric and preparation method thereof - Google Patents
Ocean recovery fabric and preparation method thereof Download PDFInfo
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- CN114230858B CN114230858B CN202010939380.0A CN202010939380A CN114230858B CN 114230858 B CN114230858 B CN 114230858B CN 202010939380 A CN202010939380 A CN 202010939380A CN 114230858 B CN114230858 B CN 114230858B
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- alcoholysis
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- 239000004744 fabric Substances 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000011084 recovery Methods 0.000 title claims description 17
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 229920000728 polyester Polymers 0.000 claims abstract description 138
- 239000002699 waste material Substances 0.000 claims abstract description 91
- 238000006136 alcoholysis reaction Methods 0.000 claims abstract description 88
- 239000002994 raw material Substances 0.000 claims abstract description 48
- 239000003054 catalyst Substances 0.000 claims abstract description 43
- 239000000835 fiber Substances 0.000 claims abstract description 32
- 238000002844 melting Methods 0.000 claims abstract description 27
- 230000008018 melting Effects 0.000 claims abstract description 27
- 239000004033 plastic Substances 0.000 claims abstract description 25
- 229920003023 plastic Polymers 0.000 claims abstract description 25
- 239000000047 product Substances 0.000 claims abstract description 25
- 238000009987 spinning Methods 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 20
- 238000004040 coloring Methods 0.000 claims abstract description 20
- 229920000570 polyether Polymers 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 18
- 229920005862 polyol Polymers 0.000 claims abstract description 15
- 150000003077 polyols Chemical class 0.000 claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims abstract description 12
- 238000012216 screening Methods 0.000 claims abstract description 5
- 238000009941 weaving Methods 0.000 claims abstract description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 123
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 32
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 27
- 239000011259 mixed solution Substances 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 19
- 229910052787 antimony Inorganic materials 0.000 claims description 18
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 18
- 150000003512 tertiary amines Chemical class 0.000 claims description 18
- 238000006116 polymerization reaction Methods 0.000 claims description 16
- 239000004408 titanium dioxide Substances 0.000 claims description 16
- 239000002985 plastic film Substances 0.000 claims description 15
- 239000002002 slurry Substances 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 12
- 238000006068 polycondensation reaction Methods 0.000 claims description 12
- 239000012634 fragment Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000000155 melt Substances 0.000 claims description 11
- 239000002243 precursor Substances 0.000 claims description 9
- 239000003086 colorant Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 238000009835 boiling Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 5
- 238000002788 crimping Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 238000009998 heat setting Methods 0.000 claims description 4
- 238000010309 melting process Methods 0.000 claims description 4
- 239000008041 oiling agent Substances 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000005202 decontamination Methods 0.000 claims description 3
- 230000003588 decontaminative effect Effects 0.000 claims description 3
- 125000003827 glycol group Chemical group 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000011265 semifinished product Substances 0.000 claims description 3
- 238000012691 depolymerization reaction Methods 0.000 abstract description 4
- 239000013078 crystal Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005844 autocatalytic reaction Methods 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 17
- 238000004064 recycling Methods 0.000 description 11
- 238000009954 braiding Methods 0.000 description 8
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 description 7
- 239000004246 zinc acetate Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 238000005809 transesterification reaction Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 2
- 125000004185 ester group Chemical group 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000001488 sodium phosphate Substances 0.000 description 2
- 229910000162 sodium phosphate Inorganic materials 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000005915 ammonolysis reaction Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000001044 red dye Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
- C08J11/18—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material
- C08J11/22—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds
- C08J11/24—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds containing hydroxyl groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/82—Preparation processes characterised by the catalyst used
- C08G63/87—Non-metals or inter-compounds thereof
-
- 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
- D01F1/10—Other agents for modifying properties
-
- 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
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
- D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
- D04C1/02—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof made from particular materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
-
- 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]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
The invention provides a preparation method of ocean recovered fabric, which comprises the following steps: sorting, decontaminating, crushing and cleaning the waste marine plastics, and then removing water to obtain waste polyester raw materials; adding the waste polyester raw material into a melting device for melting to obtain molten waste polyester; the molten waste polyester, the alcoholysis agent and the alcoholysis catalyst are subjected to depolymerization reaction in an alcoholysis kettle to obtain an alcoholysis depolymerized product; and (3) performing a repolymerization reaction on the depolymerized product of alcoholysis to prepare regenerated polyester, and spinning, coloring and weaving the regenerated polyester into the fabric. According to the preparation method provided by the invention, through multiple color screening, the situation that the difference of the finally obtained yarn raw materials is relatively large is avoided, and the influence on the weaving effect of the fabric is reduced; and polyether polyol is added as an autocatalysis catalyst in the process of the repolymerization reaction, so that the crystal area of the polyester prepared by the repolymerization is enlarged, and the fiber is softer and has higher coloring rate.
Description
Technical Field
The invention relates to the textile field, in particular to ocean recovery fabric and a preparation method thereof.
Background
The regenerated polyester has been widely used in various industries, and the main source is recycled waste plastic products, so as to change waste into valuable, reduce environmental pollution and provide a polyester raw material for production. The raw materials of the regenerated polyester are mainly from waste plastic products recovered on land at present, and are more easily classified and used because of the relatively larger quantity. The patent with the application number of CN201310361191.X discloses a regenerated polyester ultra-short fiber, which is prepared by the following method: 1) Removing sundries of the waste polyester bottles; 2) Washing with neutral washing solution sodium phosphate at 40-45deg.C; 3) Crushing, steaming at 85-100deg.C, and further separating impurities; 4) Feeding the mixture into a belt-type friction washer, and adding a small amount of neutral cleaning liquid sodium phosphate for cleaning again; 5) Repeatedly rinsing, wherein the rinsing purpose is to ensure that the bottle flakes do not contain cleaning liquid and other liquid medicine; 6) Dehydrating, drying and granulating to obtain regenerated polyester bottle flakes; 7) The regenerated polyester ultra-short fiber is produced by adopting the traditional spinning process.
Ocean recycling polyester is a new concept, raw materials of the ocean recycling polyester are from waste plastic products in the ocean, the problem of ocean plastic pollution is mainly solved, and compared with land recycling, the ocean recycling polyester is more difficult to recycle and the quality is more difficult to control. The method for recycling polyester from sea mainly comprises hydrolysis, alcoholysis, ammonolysis, thermal cracking, other degradation and the like.
Patent application number CN201310277718.0 discloses a method for producing polyester staple fibers from recycled polyester waste, comprising the steps of: 1) Sorting, removing labels, primarily cleaning and crushing the recycled polyester waste into pieces; 2) The obtained fragments enter a water spraying grinding machine table through feeding machine equipment to be rubbed and decontaminated, enter a material boiling pot through a feeding machine to be steamed and decontaminated, enter a high-speed material beating machine through discharging machine equipment to be dehydrated, enter a clear water rinsing tank to be cleaned, and then are dehydrated and classified for standby; 3) Putting the obtained classified fragments into a rotary drum of a steam drying device according to a proportion, drying, pre-crystallizing and extracting water, conveying the raw materials to a screw extruder for melt extrusion, filtering impurities by a melt precision filter, feeding the raw materials into melt diversion pipelines to each spinning position metering pump, quantitatively conveying the metered melt to each spinneret assembly, extruding the melt extruded by melting and 5-10 mpa pressure through spinneret plates of different specifications to form primary fiber tows, and feeding the primary fiber tows into a yarn containing barrel for split charging by a feeder device after directional traction, air-conditioning wind speed cooling, oiling agent water cooling, static removal and enhanced cohesion to obtain semi-finished yarn tows for pre-spinning production; then, the filament sheets are regularly and uniformly guided into a relaxation drying heat setting machine for drying and setting by a filament arranging machine device; and then drying, shaping and cooling the polyester staple fibers at a constant speed through a steam heating device and a moisture dehumidifying device by a chain plate machine, then feeding the polyester staple fibers into a fixed-length cutting machine device for cutting through a traction machine device, and feeding the cut fibers into a packing machine device for packing by an air feeding device to obtain the polyester staple fibers.
The recycling of polyester is realized in the prior art, but the recycling difficulty is high, the efficiency is relatively low due to the wide division of the marine plastic garbage, and the recycling difficulty is difficult to strictly classify colors, so that the recycled marine plastic is used as a raw material, the yarn raw materials of the recycled polyester fabric prepared by the method are large in difference among different batches, the coloring rate is unstable, and the quality of the fabric is influenced.
Disclosure of Invention
In view of the above, the invention aims to provide a marine recycling fabric and a preparation method thereof, so as to solve the problems of high recycling difficulty, low efficiency, large color difference of different batches and unstable coloring rate of the marine recycling polyester fabric in the prior art.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
the preparation method of the ocean recovered fabric comprises the following steps: sorting, decontaminating, crushing and cleaning the waste marine plastics, and then removing water to obtain waste polyester raw materials; adding the waste polyester raw material into a melting device for melting to obtain molten waste polyester; the molten waste polyester, the alcoholysis agent and the alcoholysis catalyst are subjected to depolymerization reaction in an alcoholysis kettle to obtain an alcoholysis depolymerized product; and (3) performing a repolymerization reaction on the depolymerized product of alcoholysis to prepare regenerated polyester, and spinning, coloring and weaving the regenerated polyester into the fabric.
Further, an alcoholysis agent is synchronously added in the melting process of the waste polyester raw material for pre-alcoholysis, wherein the alcoholysis agent is ethylene glycol; based on the weight of the waste polyester raw material, the addition amount of the alcoholysis agent in the pre-alcoholysis process is 10ppm-1%.
Further, the alcoholysis agent in the depolymerization reaction is ethylene glycol, and the alcoholysis catalyst is at least one of potassium carbonate, zinc acetate, tertiary amine and antimony-based polyester catalyst.
Further, the alcoholysis catalyst is dissolved in ethylene glycol to prepare an ethylene glycol solution with the mass concentration of 20-60%.
Further, the alcoholysis catalyst is a tertiary amine, an antimony polyester catalyst or a mixture of the two.
Further, the process for preparing the recycled polyester by the repolymerization reaction comprises the following steps: the mixed solution of the depolymerization is kept at 120-220 ℃, and ester exchange agent, titanium dioxide slurry and self-catalyst are added into the mixed solution; then the temperature is increased to 220-260 ℃, and the pre-polycondensation reaction is carried out under the condition that the vacuum degree in the reaction kettle is smaller than 100Pa by vacuumizing; and continuously vacuumizing, and carrying out polymerization reaction at the temperature of 260-280 ℃ to obtain the regenerated polyester.
Further, the transesterification agent is methanol, and the ratio of the transesterification agent to the original waste polyester raw material is 1-3:1 by weight.
Further, the addition amount of the titanium dioxide slurry is 0-6% of the mass of the waste polyester product; the addition amount of the polyether is 0.01-5% of the mass of the waste polyester product.
Further, the self-catalytic catalyst is polyether polyol, and the addition amount of the polyether polyol is 30 ppm-500 ppm of the mass of the waste polyester product; the pre-polycondensation reaction time is 30-60 minutes.
The invention also provides the ocean recovery fabric, and the ocean recovery fabric is prepared by using the preparation method of the ocean recovery fabric.
Compared with the prior art, the ocean recovery fabric provided by the invention has the following advantages:
1. according to the invention, waste marine plastics are recycled to prepare the textile fabric, so that waste is changed into valuable, the problem of marine plastic pollution is alleviated, and raw materials are saved;
2. when waste marine plastics are recovered, different plastic products are firstly classified according to color areas, and meanwhile, color grading screening is carried out again after washing and crushing treatment, so that the situation that the difference of the finally obtained yarn raw materials is relatively large is avoided, and the influence on the weaving effect of fabrics is reduced;
3. adding an alcoholysis agent in the melting process for pre-alcoholysis, on one hand, accelerating the melting of the waste polyester raw material in melting equipment, on the other hand, enabling the waste polyester raw material to undergo partial alcoholysis reaction during melting, reducing the viscosity of the melted material, keeping the melted material in a melted state at the alcoholysis temperature after the melted material enters an alcoholysis kettle, ensuring that the mixture among the materials during the subsequent alcoholysis reaction is facilitated, ensuring that the subsequent alcoholysis reaction is carried out under homogeneous phase conditions, and fully playing the catalytic performance of the catalyst;
4. the chain length of the regenerated polyester can be regulated by regulating the type of the catalyst while ensuring smooth repolymerization reaction during alcoholysis, so that the obtained regenerated polyester fiber has better softness, and the tertiary amine and the antimony catalyst have synergistic effect, so that the softness of the regenerated polyester fiber can be effectively improved while promoting the generation of the regenerated polyester.
5. Adding titanium dioxide slurry in the process of preparing regenerated polyester by the heavy polymerization reaction, and keeping the mixed solution of depolymerization at 150-220 ℃ to ensure that the titanium dioxide slurry can be uniformly dispersed in a mixed system of the heavy polymerization reaction, thereby solving the problems that titanium dioxide is unevenly distributed and yarn breakage is easy in the spinning process due to high-temperature feeding of the conventional titanium dioxide slurry;
6. polyether polyol is adopted as an autocatalyst in the heavy polymerization reaction, so that the crystal area of the polyester prepared by the re-polymerization is enlarged, and the fiber is softer and easy to color.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of embodiments of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
The invention provides a marine recovery fabric and a preparation method thereof, which are used for converting recovered marine waste plastic products into textile raw materials, and specifically mainly comprise the following steps:
(1) Pretreatment of materials: sorting, decontaminating and crushing the waste marine plastics to obtain waste polyester raw materials;
when the ocean plastic is subjected to sorting treatment, firstly, different plastic products are separated according to color, the labels are removed, the plastic products are primarily cleaned, and then the plastic products are sent into a crusher to be crushed, so that a waste plastic sheet structure is obtained;
and (5) cleaning again: putting the crushed waste polyester materials into a sand grinder with spraying equipment for friction decontamination, conveying the crushed waste polyester materials into a boiling pot, heating the crushed waste polyester materials to be close to 100 ℃ through steam, boiling the crushed waste polyester materials for 30-60 min, cleaning the steamed waste polyester fragments with clear water through a discharging machine, and finally dewatering the waste polyester fragments through a dewatering dryer, and conveying the waste polyester fragments to the next working procedure through a feeding device.
And (3) water removal: and (3) carrying out color grading screening on the crushed and cleaned plastic sheets again, uniformly mixing the plastic sheets with the similar colors, putting the plastic sheets into a steam drying device for water removal treatment, and conveying the plastic sheets into a melting device through a feeding device.
(2) Melting and feeding: adding the waste polyester raw material into a melting device for melting to obtain molten waste polyester; adding an alcoholysis agent in the melting process of the waste polyester raw material for pre-alcoholysis, wherein the alcoholysis agent is glycol; the addition amount of the alcoholysis agent in the pre-alcoholysis process is 10ppm-1% based on the weight of the waste polyester raw material.
(3) Alcoholysis: the molten waste polyester, the alcoholysis agent and the alcoholysis catalyst are subjected to depolymerization reaction in an alcoholysis kettle to obtain alcoholysis product;
the alcoholysis agent is glycol, the addition amount of the glycol is excessive relative to the waste polyester raw material, the specific waste polyester product and the glycol are put into an alcoholysis kettle according to the molar ratio of 1:2-10, and the alcoholysis reaction temperature is 180-280 ℃.
The alcoholysis catalyst is at least one of potassium carbonate, zinc acetate, tertiary amine and antimony polyester catalyst, and is dissolved in ethylene glycol to prepare an ethylene glycol solution with the mass concentration of 20-60%, so that the polyester raw materials of the alcoholysis catalyst are convenient to mix uniformly. Preferably, the alcoholysis catalyst is a tertiary amine, an antimony-based polyester catalyst or a mixture of both.
(4) The re-polymerization reaction is carried out to prepare regenerated polyester: the mixed solution of the depolymerization is kept at 150-220 ℃, and ester exchange agent, titanium dioxide slurry and self-catalyst are added into the mixed solution; then the temperature is increased to 220-260 ℃, and the pre-polycondensation reaction is carried out under the condition that the vacuum degree in the reaction kettle is smaller than 100Pa by vacuumizing; continuously vacuumizing, and carrying out polymerization reaction at 260-280 ℃ to obtain regenerated polyester;
the transesterification agent is methanol, and the ratio of the transesterification agent to the original waste polyester raw material is 1-3:1.
The addition amount of the titanium dioxide slurry is 0-6% of the mass of the waste polyester product; the addition amount of the polyether is 0.01% -5% of the mass of the waste polyester product; the addition amount of the polyether self-catalytic catalyst is 30 ppm-500 ppm of the mass of the waste polyester product; the pre-polycondensation reaction time is 30-60 minutes.
(5) Spinning: conveying raw materials to a screw extruder for melt extrusion, filtering impurities through a melt precise filter, feeding the raw materials into a melt split flow pipeline to a spinning box body, controlling the temperature of the spinning box body to be 280-330 ℃, selecting spinneret plates with different hole numbers according to specific requirements to spin fibers with required fineness, feeding the melt into a circular blowing device for cooling after being sprayed out from the spinneret holes, controlling the air temperature to be 18-30 ℃, controlling the air speed to be 0.4-1.2 m/s, controlling the air humidity to be 60-90%, controlling the winding speed to be 800-1600 m/min, controlling the breaking strength of a precursor spun after winding and dropping to be 4.5-5.5 CN/dtex, and controlling the breaking elongation to be 180-250%, and dropping the precursor spun fibers into a filament containing barrel for split charging through a feeder device to obtain a precursor spun production semi-finished product tow;
(6) Drawing the obtained semi-finished yarn bundles produced by pre-spinning through yarn guiding equipment, drawing the semi-finished yarn bundles through drawing equipment, and immersing the semi-finished yarn bundles in oil in an oil immersion tank to remove the short-oil-content broken filaments on the surface of the yarn bundles; then traction is carried out by a two-way traction machine, and a softening water bath device with the temperature of 65-75 ℃ is carried out by a heating oiling agent water medium; traction is carried out by three tractors, and internal stress is eliminated by a steam heating preheating box device at 90-110 ℃; the short fibers are drawn by a yarn folding machine and a crimping machine, preheated by a small steam box at 75-85 ℃ and mechanically crimped, finally cut into short fibers meeting the requirements, sent into a relaxation heat setting machine for drying and setting, and finally packaged and put into storage by a packaging machine.
(7) Coloring and braiding: classifying the colors of the colored fiber yarns, distinguishing the colors according to the color shades, the spectrum bands and the like, and knitting the same batch of fabrics by using yarns with similar coloring rates according to the judged coloring conditions; for example, dark yarns cannot be used for light-colored fabrics, and green yarns are used for green fabrics.
The raw material risks are avoided from the fabric structure, such as using ocean recycled yarns for 3D, 5D air layer middle layers or connecting layers, or bottom yarns of plating structures, or interweaving structures such as Roman cloths, and the like. In short, the defects of the ocean recycled yarn are avoided according to the characteristics of the ocean recycled yarn, and the advantages are highlighted.
Example 1
The embodiment provides a marine recovery fabric, and the preparation method mainly comprises the following steps:
pretreatment of materials: firstly, different plastic products are distinguished according to color areas, after labels are removed and are primarily cleaned, the plastic products are sent into a crusher to be crushed, and a waste plastic sheet structure is obtained; putting the crushed waste polyester materials into a sand grinder with spraying equipment for friction decontamination, conveying the crushed waste polyester materials into a boiling pot, heating the crushed waste polyester materials to be close to 100 ℃ through steam, boiling the crushed waste polyester materials for 30-60 min, cleaning the steamed waste polyester fragments with clear water through a discharging machine, and finally dewatering the waste polyester fragments through a dewatering dryer, and conveying the waste polyester fragments to the next working procedure through a feeding device; and (3) carrying out color grading screening on the crushed and cleaned plastic sheets again, uniformly mixing the plastic sheets with the similar colors, putting the plastic sheets into a steam drying device for water removal treatment, and conveying the plastic sheets into a melting device through a feeding device.
And (3) melting treatment: adding the waste polyester raw material into a melting device for melting, and simultaneously adding ethylene glycol into the melting device, wherein the addition amount of the ethylene glycol is 0.6% of the weight of the waste polyester raw material, so as to obtain molten waste polyester.
Alcoholysis: adding molten waste polyester into an alcoholysis kettle, dissolving zinc acetate into ethylene glycol to prepare an ethylene glycol solution with the mass concentration of 40%, adding the zinc acetate solution into the alcoholysis kettle, and simultaneously adding ethylene glycol with the weight being 2 times that of the waste polyester raw material, wherein the reaction temperature in the alcoholysis kettle is controlled at 220-270 ℃.
The depolymerized mixed solution is kept at 150-220 ℃, and methanol (200%), titanium dioxide slurry (4%) and polyether polyol (200 ppm) are added into the mixed solution; then the temperature is increased to 220-260 ℃, and the pre-polycondensation reaction is carried out under the condition that the vacuum degree in the reaction kettle is smaller than 100Pa by vacuumizing; and continuously vacuumizing, and carrying out polymerization reaction at the temperature of 260-280 ℃ to obtain the regenerated polyester.
(5) Spinning: conveying raw materials to a screw extruder for melt extrusion, filtering impurities through a melt precise filter, feeding the raw materials into a melt split flow pipeline to a spinning box body, controlling the temperature of the spinning box body to be 280-330 ℃, selecting spinneret plates with different hole numbers according to specific requirements to spin fibers with required fineness, feeding the melt into a circular blowing device for cooling after being sprayed out from the spinneret holes, controlling the air temperature to be 18-30 ℃, controlling the air speed to be 0.4-1.2 m/s, controlling the air humidity to be 60-90%, controlling the winding speed to be 800-1600 m/min, controlling the breaking strength of a precursor spun after winding and dropping to be 4.5-5.5 CN/dtex, and controlling the breaking elongation to be 180-250%, and dropping the precursor spun fibers into a filament containing barrel for split charging through a feeder device to obtain a precursor spun production semi-finished product tow;
(6) Drawing the obtained semi-finished yarn bundles produced by pre-spinning through yarn guiding equipment, drawing the semi-finished yarn bundles through drawing equipment, and immersing the semi-finished yarn bundles in oil in an oil immersion tank to remove the short-oil-content broken filaments on the surface of the yarn bundles; then traction is carried out by a two-way traction machine, and a softening water bath device with the temperature of 65-75 ℃ is carried out by a heating oiling agent water medium; traction is carried out by three tractors, and internal stress is eliminated by a steam heating preheating box device at 90-110 ℃; the short fibers are drawn by a yarn folding machine and a crimping machine, preheated by a small steam box at 75-85 ℃ and mechanically crimped, finally cut into short fibers meeting the requirements, sent into a relaxation heat setting machine for drying and setting, and finally packaged and put into storage by a packaging machine.
(7) Coloring and braiding: the colored fiber yarn colors are classified, the colors are distinguished according to the color shades, the spectrum bands and the like, and the same batch of fabrics are woven by using the yarns with similar coloring rates according to the judged coloring conditions.
Example 2
The embodiment provides a marine recovery fabric, and the preparation method comprises the following steps:
the material pretreatment and the melting treatment were the same as in example 1.
Alcoholysis: adding molten waste polyester into an alcoholysis kettle, dissolving tertiary amine into ethylene glycol to prepare an ethylene glycol solution with the mass concentration of 40%, adding the ethylene glycol solution of the tertiary amine into the alcoholysis kettle, and simultaneously adding ethylene glycol with the weight being 2 times that of the waste polyester raw material into the alcoholysis kettle, wherein the reaction temperature in the alcoholysis kettle is controlled at 220-270 ℃.
The depolymerized mixed solution is kept at 150-220 ℃, and methanol (200%), titanium dioxide slurry (4%) and polyether polyol (200 ppm) are added into the mixed solution; then the temperature is increased to 220-260 ℃, and the pre-polycondensation reaction is carried out under the condition that the vacuum degree in the reaction kettle is smaller than 100Pa by vacuumizing; and continuously vacuumizing, and carrying out polymerization reaction at the temperature of 260-280 ℃ to obtain the regenerated polyester.
The subsequent spinning, coloring and braiding process was the same as in example 1.
Example 3
The embodiment provides a marine recovery fabric, and the preparation method comprises the following steps:
the material pretreatment and the melting treatment were the same as in example 1.
Alcoholysis: adding molten waste polyester into an alcoholysis kettle, dissolving an antimony polyester catalyst in ethylene glycol to prepare an ethylene glycol solution with the mass concentration of 40%, adding the ethylene glycol solution of the antimony polyester catalyst into the alcoholysis kettle, and simultaneously adding ethylene glycol with the weight 2 times that of the waste polyester raw material into the alcoholysis kettle, wherein the reaction temperature in the alcoholysis kettle is controlled at 220-270 ℃.
The depolymerized mixed solution is kept at 150-220 ℃, and methanol (200%), titanium dioxide slurry (4%) and polyether polyol (200 ppm) are added into the mixed solution; then the temperature is increased to 220-260 ℃, and the pre-polycondensation reaction is carried out under the condition that the vacuum degree in the reaction kettle is smaller than 100Pa by vacuumizing; and continuously vacuumizing, and carrying out polymerization reaction at the temperature of 260-280 ℃ to obtain the regenerated polyester.
The subsequent spinning, coloring and braiding process was the same as in example 1.
Example 4
The embodiment provides a marine recovery fabric, and the preparation method comprises the following steps:
the material pretreatment and the melting treatment were the same as in example 1.
Alcoholysis: adding molten waste polyester into an alcoholysis kettle, mixing and dissolving an antimony polyester catalyst and tertiary amine into ethylene glycol to prepare an ethylene glycol solution with the mass concentration of 40%, wherein the weight ratio of the antimony polyester catalyst to the tertiary amine is 1:1, adding the ethylene glycol solution of the mixed catalyst into the alcoholysis kettle, adding ethylene glycol which is 2 times of the weight of the waste polyester raw material into the alcoholysis kettle, and controlling the reaction temperature in the alcoholysis kettle to be 220-270 ℃.
The depolymerized mixed solution is kept at 150-220 ℃, and methanol (200%), titanium dioxide slurry (4%) and polyether polyol (200 ppm) are added into the mixed solution; then the temperature is increased to 220-260 ℃, and the pre-polycondensation reaction is carried out under the condition that the vacuum degree in the reaction kettle is smaller than 100Pa by vacuumizing; and continuously vacuumizing, and carrying out polymerization reaction at the temperature of 260-280 ℃ to obtain the regenerated polyester.
The subsequent spinning, coloring and braiding process was the same as in example 1.
Example 5
The embodiment provides a marine recovery fabric, and the preparation method comprises the following steps:
the material pretreatment and the melting treatment were the same as in example 1.
Alcoholysis: adding molten waste polyester into an alcoholysis kettle, mixing and dissolving an antimony polyester catalyst and tertiary amine into ethylene glycol to prepare an ethylene glycol solution with the mass concentration of 40%, wherein the weight ratio of the antimony polyester catalyst to the tertiary amine is 2:1, adding the ethylene glycol solution of the mixed catalyst into the alcoholysis kettle, adding ethylene glycol which is 2 times of the weight of the waste polyester raw material into the alcoholysis kettle, and controlling the reaction temperature in the alcoholysis kettle to be 220-270 ℃.
The depolymerized mixed solution is kept at 150-220 ℃, and methanol (200%), titanium dioxide slurry (4%) and polyether polyol (200 ppm) are added into the mixed solution; then the temperature is increased to 220-260 ℃, and the pre-polycondensation reaction is carried out under the condition that the vacuum degree in the reaction kettle is smaller than 100Pa by vacuumizing; and continuously vacuumizing, and carrying out polymerization reaction at the temperature of 260-280 ℃ to obtain the regenerated polyester.
The subsequent spinning, coloring and braiding process was the same as in example 1.
Example 6
The embodiment provides a marine recovery fabric, and the preparation method comprises the following steps:
the material pretreatment and the melting treatment were the same as in example 1.
Alcoholysis: adding molten waste polyester into an alcoholysis kettle, mixing and dissolving an antimony polyester catalyst and tertiary amine into ethylene glycol to prepare an ethylene glycol solution with the mass concentration of 40%, wherein the weight ratio of the antimony polyester catalyst to the tertiary amine is 1:2, adding the ethylene glycol solution of the mixed catalyst into the alcoholysis kettle, adding ethylene glycol which is 2 times of the weight of the waste polyester raw material into the alcoholysis kettle, and controlling the reaction temperature in the alcoholysis kettle to be 220-270 ℃.
The depolymerized mixed solution is kept at 150-220 ℃, and methanol (200%), titanium dioxide slurry (4%) and polyether polyol (200 ppm) are added into the mixed solution; then the temperature is increased to 220-260 ℃, and the pre-polycondensation reaction is carried out under the condition that the vacuum degree in the reaction kettle is smaller than 100Pa by vacuumizing; and continuously vacuumizing, and carrying out polymerization reaction at the temperature of 260-280 ℃ to obtain the regenerated polyester.
The subsequent spinning, coloring and braiding process was the same as in example 1.
Comparative example
The material pretreatment and the melting treatment were the same as in example 1.
Alcoholysis: adding molten waste polyester into an alcoholysis kettle, dissolving zinc acetate into ethylene glycol to prepare an ethylene glycol solution with the mass concentration of 40%, adding the zinc acetate solution into the alcoholysis kettle, and simultaneously adding ethylene glycol with the weight being 2 times that of the waste polyester raw material, wherein the reaction temperature in the alcoholysis kettle is controlled at 220-270 ℃.
The depolymerized mixed solution is kept at 150-220 ℃, and methanol (200%) and titanium dioxide slurry (4%) are added into the depolymerized mixed solution; then the temperature is increased to 220-260 ℃, and the pre-polycondensation reaction is carried out under the condition that the vacuum degree in the reaction kettle is smaller than 100Pa by vacuumizing; and continuously vacuumizing, and carrying out polymerization reaction at the temperature of 260-280 ℃ to obtain the regenerated polyester.
The subsequent spinning, coloring and braiding process was the same as in example 1.
Experimental example
(1) Dispersing red dye in 500ml water, mixing 20ml of dispersion liquid and 80ml of water, regulating pH with acetic acid to 4-5, dividing into 7 parts, respectively adding 2g of marine recovery fabric obtained in examples 1-6 and comparative example for dyeing, heating the dyeing bath temperature from 70 ℃ to 130 ℃ within 30min, preserving heat at 130 ℃ for 30min, cooling to 90 ℃, and sampling. Observing the color light of the sample cloth, testing the washing fastness according to GB/T3921-2008, testing the coloring rate according to GB/T9337-2009, testing the softness of the sample cloth according to GB/T8942-2002, and summarizing the test results as follows:
table 1 comparison of the color ratios of the fabrics produced in the examples
| Examples | The washing fastness is 60 DEG C | The coloring rate is% |
| 1 | 4 | 93.5 |
| 2 | 4～5 | 94.6 |
| 3 | 4～5 | 94.7 |
| 4 | 4 | 93.8 |
| 5 | 5 | 95.5 |
| 6 | 5 | 95.1 |
| Comparative example | 3 | 84.7 |
As can be seen from the comparison of the data of the examples and the comparative examples, the polyether polyol is added in the process of depolymerizing and then polymerizing, so that a large amount of polyether and polyether polyol are generated by the residual glycol in the alcoholysis reaction under the catalysis of the polyether polyol, and the polyether and polyether polyol enlarge the crystal area of the polyester prepared by the repolymerization, and the fiber is softer and is easy to color.
Table 2 softness test comparison of the fabrics made in the examples
As can be seen from the data in table 2, when the catalyst is zinc acetate, the regenerated polyester fiber has poor softness; when the catalyst is tertiary amine or antimony catalyst, the softness is slightly improved; when the catalyst is a mixture of tertiary amine and antimony catalyst and the ratio of the tertiary amine to the antimony catalyst is 1:2, the softness of the regenerated polyester fiber is good, the recycled fabric provided by the invention ensures smooth repolymerization by adding the catalyst, and the chain length of the regenerated polyester can be regulated by regulating the type of the catalyst, so that the obtained regenerated polyester fiber has better softness, and the tertiary amine and the antimony catalyst have a synergistic effect, so that the softness of the regenerated polyester fiber can be effectively improved while the generation of the regenerated polyester is promoted.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (2)
1. The preparation method of the ocean recovered fabric is characterized by comprising the following steps of:
(1) Pretreatment of materials: sorting, decontaminating, crushing and cleaning the waste marine plastics, and then removing water to obtain waste polyester raw materials; when the ocean plastic is sorted, firstly, different plastic products are separated according to color, the labels are removed, the plastic products are primarily cleaned, and then the plastic products are sent into a crusher to be crushed, so that a waste plastic sheet structure is obtained;
and (5) cleaning again: putting the crushed waste polyester materials into a sand grinder with spraying equipment for friction decontamination, conveying the crushed waste polyester materials into a boiling pot, heating the crushed waste polyester materials to be close to 100 ℃ through steam, boiling the crushed waste polyester materials for 30-60 min, cleaning the steamed waste polyester fragments with clear water through a discharging machine equipment, dewatering the waste polyester fragments through a dewatering drier equipment, conveying the waste polyester fragments to the next working procedure through a feeding device,
and (3) water removal: carrying out color grading screening on the crushed and cleaned plastic sheets again, uniformly mixing the plastic sheets with the similar colors, putting the plastic sheets into a steam drying device for water removal treatment, and then conveying the plastic sheets into a melting device through a feeding device;
(2) Melting and feeding: adding the waste polyester raw material into a melting device for melting to obtain molten waste polyester; adding an alcoholysis agent in the melting process of the waste polyester raw material for pre-alcoholysis, wherein the alcoholysis agent is glycol; taking the weight of the waste polyester raw material as a reference, the adding amount of the alcoholysis agent in the pre-alcoholysis process is 10ppm-1%;
(3) Alcoholysis: adding molten waste polyester into an alcoholysis kettle, mixing and dissolving an antimony polyester catalyst and tertiary amine into ethylene glycol to prepare an ethylene glycol solution with the mass concentration of 40%, adding the ethylene glycol solution of the mixed catalyst into the alcoholysis kettle, and simultaneously adding ethylene glycol with the weight 2 times that of the waste polyester raw material into the alcoholysis kettle, wherein the reaction temperature in the alcoholysis kettle is controlled at 220-270 ℃;
(4) The re-polymerization reaction is carried out to prepare regenerated polyester: the depolymerized mixed solution is kept at 150-220 ℃, and 200% methanol, 4% titanium dioxide slurry and 200ppm polyether polyol are added into the depolymerized mixed solution; then, the temperature is increased to 220-260 ℃, and the pre-polycondensation reaction is carried out under the condition that the vacuum degree in the reaction kettle is smaller than 100Pa by vacuumizing; continuously vacuumizing, and carrying out polymerization reaction at the temperature of 260-280 ℃ to obtain regenerated polyester;
(5) Spinning: conveying raw materials to a screw extruder for melt extrusion, filtering impurities through a melt precise filter, feeding the raw materials into a melt split flow pipeline to a spinning box body, controlling the temperature of the spinning box body to be 280-330 ℃, selecting spinneret plates with different hole numbers according to specific requirements to spin fibers with required fineness, feeding the melt into a circular blowing device for cooling after being sprayed out from the spinneret holes, controlling the air temperature to be 18-30 ℃, controlling the air speed to be 0.4-1.2 m/s, controlling the air humidity to be 60-90%, controlling the winding speed to be 800-1600 m/min, controlling the breaking strength of a precursor spun after winding and dropping to be 4.5-5.5 CN/dtex, and controlling the breaking elongation to be 180-250%, and dropping the precursor spun fibers into a filament containing barrel for split charging through a feeder device to obtain a precursor spun production semi-finished product tow;
(6) Drawing the obtained semi-finished yarn bundles produced by pre-spinning through yarn guiding equipment, drawing the semi-finished yarn bundles through drawing equipment, and immersing the semi-finished yarn bundles in oil in an oil immersion tank to remove the short-oil-content broken filaments on the surface of the yarn bundles; then traction is carried out by a two-way traction machine, and a softening water bath device with the temperature of 65-75 ℃ is carried out by a heating oiling agent water medium; traction is carried out by three tractors, and internal stress is eliminated by a steam heating preheating box device at 90-110 ℃; and (3) carrying out mechanical crimping after being preheated at 75-85 ℃ by a silk stacking machine and a crimping machine, finally cutting into short fibers meeting the requirements, sending the short fibers into a relaxation heat setting machine for drying and setting, and finally packaging and warehousing by a packaging machine, and coloring and weaving into the fabric.
2. A marine recovery fabric, characterized by being produced by the marine recovery fabric production method according to claim 1.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3488298A (en) * | 1966-12-01 | 1970-01-06 | Eastman Kodak Co | Polyester scrap recovery processes |
| KR20120128480A (en) * | 2011-05-17 | 2012-11-27 | 웅진케미칼 주식회사 | Recycled polyester using waste polyester and manufacturing method thereof |
| CN103436990A (en) * | 2013-08-16 | 2013-12-11 | 盛虹集团有限公司 | Recycled polyester sea-island fiber and preparation method thereof |
| CN109467743A (en) * | 2018-12-26 | 2019-03-15 | 李宁（中国）体育用品有限公司 | Waste and old polyester textile chemistry regeneration method, recycled polyester and polyester hot melting silk |
| CN110483279A (en) * | 2019-07-10 | 2019-11-22 | 福建赛隆科技有限公司 | A kind of recovery method of waste and old polyester material |
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2020
- 2020-09-09 CN CN202010939380.0A patent/CN114230858B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3488298A (en) * | 1966-12-01 | 1970-01-06 | Eastman Kodak Co | Polyester scrap recovery processes |
| KR20120128480A (en) * | 2011-05-17 | 2012-11-27 | 웅진케미칼 주식회사 | Recycled polyester using waste polyester and manufacturing method thereof |
| CN103436990A (en) * | 2013-08-16 | 2013-12-11 | 盛虹集团有限公司 | Recycled polyester sea-island fiber and preparation method thereof |
| CN109467743A (en) * | 2018-12-26 | 2019-03-15 | 李宁（中国）体育用品有限公司 | Waste and old polyester textile chemistry regeneration method, recycled polyester and polyester hot melting silk |
| CN110483279A (en) * | 2019-07-10 | 2019-11-22 | 福建赛隆科技有限公司 | A kind of recovery method of waste and old polyester material |
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