CN111304787B - Production and processing technology of recycled regenerated cotton - Google Patents
Production and processing technology of recycled regenerated cotton Download PDFInfo
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- CN111304787B CN111304787B CN202010058705.4A CN202010058705A CN111304787B CN 111304787 B CN111304787 B CN 111304787B CN 202010058705 A CN202010058705 A CN 202010058705A CN 111304787 B CN111304787 B CN 111304787B
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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
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/13—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen using inorganic agents
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/30—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using reducing agents
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/70—Multi-step processes
- D06L4/75—Multi-step processes combined with cleaning or washing
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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
Abstract
The invention discloses a production and processing technology of recycled regenerated cotton, which relates to the technical field of regenerated cotton processing; the sorting is to roughly sort the types of yarn and cloth, color and colorless, pulp and pulp-free, pure cotton, chemical fiber and mixed fiber, thereby determining the decoloring process; the cake making is a compressed round cake with certain density and permeable stripping and flushing; a loose fiber cake press is adopted; the cutting is to cut the material to be processed into a length of about 45mm for opening; the carding and opening is to manually pave and feed the materials into regenerated fiber carding equipment and adopt two-roller saw-stabbing carding needles for coarse opening; fine combing and opening are carried out by finely loosening the cotton into single fibers by adopting six rollers with different card wire densities and fully mixing the single fibers, and a multi-bin cotton mixing box and multi-roller fiber carding equipment are adopted; the production path adopts a compact spinning mode, so that the single yarn strength is ensured, the production efficiency of subsequent weaving is ensured, and the defects in the prior art are overcome.
Description
Technical Field
The invention belongs to the technical field of regenerated cotton processing, and particularly relates to a production and processing technology of recycled regenerated cotton.
Background
The regenerated cotton spinning is a fiber material prepared by classifying, recovering and reprocessing various waste yarns, waste selvage yarns, leftover materials or waste cloth materials and the like generated in the cotton spinning process and is used for continuous spinning. Forming a production mode of environmental protection cycle.
China is a large textile production country, and a large amount of leftovers can be produced every day; china is also a large population country and is in short supply of textile resources. At present, some leftovers are treated as garbage and even used as fuel for production. Not only causes serious waste, but also pollutes the environment and harms the health of people. In order to reduce the emission of waste and carbon in the production process and carry forward the production mode recycling of environment-friendly circulation of the poplar, the regenerated cotton is produced by utilizing the circulation of sorting, fading, opening and re-spinning; however, the regenerated yarn is pure cotton, blended by chemical fiber, and spun yarn is also filament yarn.
The currently adopted process flow is sorting → opening → cake making → fading → drying → packaging. The experimental process finds that the following problems can not occur in the process flow of opening firstly and then fading, and the opened raw materials can not be produced:
(1) the fibers which are loosened are all grey black, and simultaneously, the fibers internally contain chemical fiber components, so that the fibers cannot be used and produced in a classified mode;
(2) the loose fibers are fluffy and serious, the cake making progress is difficult, and meanwhile, in the fading process, the finally faded fibers are all grey blue, the wet fibers cannot be dried, and the finally faded fibers are all in a small cake shape and cannot be produced.
Disclosure of Invention
Aiming at solving the problems in the prior art; the invention aims to provide a production and processing technology of recycled regenerated cotton.
The invention relates to a production and processing technology of recycled regenerated cotton, which comprises the following process flows:
1. sorting, namely sorting the recovered fibers according to fiber attributes, coloring degrees and fluorescence;
2. a material net cylinder is manually and continuously placed, automatically runs clockwise to spray water, and is compressed and hammered into a hollow cake with the inner diameter of 860mm, the outer diameter of 1860mm, the height of 300mm and the weight of 400 kg; the color stripping dryer is matched with the size of the color stripping dryer, and three cakes are transported and hoisted into the color stripping machine in a group.
3. Stripping, namely, moving into a high-pressure crane for fading and washing after caging;
4. drying, namely drying the mixture for multiple times by using drying equipment and cooling the mixture at normal temperature;
5. fine picking, namely conveying the material subjected to color stripping and drying through a vibrating cotton box fan to pass through a picking platform, manually sorting and then dividing raw cotton, chemical fiber or special fiber of each grade;
6. and (3) cutting, namely uniformly spreading the raw materials on a conveyor belt, conveying the raw materials to an inlet of the conveyor belt by the conveyor belt, tightly extruding the raw materials by a roller and sending the raw materials to the front of a movable knife roller, and cutting the raw materials by shearing a movable knife and a fixed knife. The cut materials are conveyed out through a conveyer belt;
7. carding and opening, wherein impurities in cotton spinning are removed by mechanical centrifugal force generated by high-speed operation of a nail roller and torn to be loosened by a plurality of rollers; adopting two roller saw-stabbing carding needles for coarse opening;
8. combing, fine opening, removing impurities in the cotton textile by mechanical centrifugal force generated by high-speed operation of the nail roller, tearing the cotton textile and loosening the cotton textile by a multi-roller; finely loosening the fibers into single fibers by adopting six rollers with different card wire densities and fully mixing the single fibers;
9. and (5) packaging, namely packaging the processed regenerated cotton by a packaging device.
Preferably, the sorting in step 1 has the following sorting conditions:
11. according to the classification of raw yarn components, the yarn is divided into four major varieties of pure cotton, polyester cotton, cotton-containing fiber and other mixed fiber;
12. classifying the recycled materials into natural colors and colored colors according to the color classification of the recycled materials;
13. determining classification according to an internal dyeing process, and classifying the classification into fluorescence and non-fluorescence;
14. according to the category of fading process, the method is divided into pulp-free type and pulp-containing type.
Preferably, the cake making in the step 2 is a round cake which is compressed by a loose fiber cake press and has certain density and is permeable to stripping and washing.
Preferably, the stripping in step 3 is divided into the following steps:
31. first water: reusing water, adding caustic soda and sodium hydrosulfite, raising the temperature to 100 ℃ for 30 minutes, and directly discharging;
32. the second water: washing with recycled water at normal temperature for 7 minutes, and discharging;
33. and (3) third water: adding alkali and hydrogen peroxide into the reuse water, raising the temperature to 105 ℃ for 30min, and directly discharging;
34. fourth water: adding glacial acetic acid into cold water at normal temperature, washing for 10 minutes, and discharging;
35. fifth water: washing with cold water and normal temperature water for 7 minutes, and discharging;
preferably, the step 4 of drying mainly adopts gradual temperature rise in different periods to perform drying in different degrees, and the specific steps are as follows:
41. firstly squeezing water twice for 80 seconds each time;
42. then 10 minutes at 50 ℃;
43. then 85 ℃ for 30 minutes;
44. then drying at 105 ℃ for 90 minutes; cooling to 85 ℃ after drying, discharging, and naturally cooling and discharging.
Preferably, the fine sorting in the step 5 is as follows: the fine picking mode of the dyed yarns and the dyed cloth and the fine picking mode of the natural yarns and the natural cloth.
Preferably, the cutting operation of step 6 is carried out by sequential conveying, and the length of each cut is about 45 mm.
Preferably, the material processed by the cutting machine is cut into pieces smaller than 450mm, the pieces are uniformly supplied to a feeding belt manually and enter a group of openers, and then the pieces are fed into a group of openers through an improved pipeline for continuous processing.
Preferably, the carding opening in the step 7 adopts two-roller saw-stabbed carding needle for coarse opening, and the specific operations are as follows:
71. the material is evenly supplied to the feeding belt manually, and is extruded by the roller and sent to the front of the carding roller, the material is combed by the hook of the carding roller, wherein, the impurities are thrown away along the tangential direction of the carding roller under the centrifugal force action of the carding roller, the fiber after carding enters a material transfer dust removal system to enter the next process, and the dust and the short fiber enter a dust collection system through a dust centralized recovery processing system.
72. The material processed by the NSX-FS600 series fiber carding machine is fed into the inlet of the roller in the next process by the material transfer system, is extruded by the roller and is sent to the front of the carding roller, and is loosened by the hook of the carding roller. Wherein, the impurities are thrown away along the tangential direction of the carding roller under the centrifugal force action of the carding roller, and the fiber materials are further carded. The carded fiber enters the next procedure from the material transfer system, and is repeatedly carded by the carding roller to obtain the standard fiber-like material
Preferably, the combing fine opening in the step 8 is to finely loosen the cotton into single fibers by adopting six rollers with different card wire densities and fully mix the single fibers, and a multi-bin cotton mixing box and multi-roller fiber carding equipment are adopted, and the specific operation is as follows:
81. the materials are uniformly supplied to the feeding belt manually, and are extruded by the roller and sent to the front of the carding roller, the materials are combed by the hook of the carding roller, wherein impurities are thrown away along the tangential direction of the carding roller under the action of the centrifugal force of the carding roller, the combed fibers enter a material transfer dust removal system and enter the next process, and dust and short fibers enter a dust collection system through a dust centralized recovery processing system;
82. feeding the material processed by the NSX-FS3150 series fiber carding machine into the inlet of a roller in the next process by a material transfer system, extruding the material by the roller and sending the extruded material to the front of a carding roller, and loosening the extruded material by the hook of the carding roller; wherein, the impurities are thrown away along the tangential direction of the carding roller under the centrifugal force action of the carding roller, and the fiber materials are further carded; and the carded fibers enter the next procedure from the material transfer system, and are repeatedly carded by the carding roller to obtain the standard fibrous material.
Compared with the prior art, the invention has the beneficial effects that: the invention mainly tries to spin various air spinning, 50S and above combings, semi-combings, carding and the like; the regenerated cotton variety of 40S or above is produced, the production path is in a compact spinning mode, the single yarn strength is ensured, the production efficiency of subsequent weaving is ensured, the defects in the prior art are avoided, and the method is convenient to popularize and apply.
Drawings
For ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a process diagram of stripping in the present invention
Detailed Description
In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the scheme according to the present invention are shown in the drawings, and other details not so relevant to the present invention are omitted.
As shown in fig. 1, the process of the recycling cotton production process of the present embodiment includes: sorting → cake beating → stripping → fine picking → cutting segment → opening of the coarse comb → fine opening of the combing → baling.
Wherein, the sorting is to determine the decoloring process by the types of roughly sorted yarns and cloth, the colors and colorlessness, the pulp carrying and pulp carrying, the pure cotton, the chemical fiber and the mixed fiber;
the cake making is a compressed round cake with certain density and permeable stripping and flushing; a loose fiber cake press is adopted;
the color stripping adopts a decoloring cleaning machine, and the material is hoisted into the machine to be distributed, fed, heated and cleaned;
the drying is to gradually raise the temperature in different periods to carry out drying in different degrees;
the fine picking is to select the faded residual colored yarn or colored cloth, the fluorescent mixed fiber yarn or cloth, the fluorescent pure cotton raw material without fluorescence;
the cutting is to cut the material to be processed into a length of about 45mm for opening;
the carding and opening is to manually pave and feed the materials into regenerated fiber carding equipment and adopt two-roller saw-stabbing carding needles for coarse opening;
fine combing and opening are carried out by finely loosening the cotton into single fibers by adopting six rollers with different card wire densities and fully mixing the single fibers, and a multi-bin cotton mixing box and multi-roller fiber carding equipment are adopted;
and finally, compressing the mixture into a rectangular package by a packaging machine.
Further, the air conditioner is provided with a fan,
the production process of the natural color yarn and the natural color cloth regenerated cotton without pulp comprises the following steps:
the grey yarn contains no size: sorting → cutting segment → opening of the card comb → fine opening of the combing → baling.
The production process of the natural color yarn and the natural color cloth pulp-containing regenerated cotton comprises the following steps:
the natural color contains pulp: sorting → cake beating → desizing → drying → cutting stage → opening of the card → fine opening of the combing → baling.
Further: the sorting has the following sorting conditions:
11. according to the classification of raw yarn components, the yarn is divided into four major varieties of pure cotton, polyester cotton, cotton-containing fiber and other mixed fiber;
12. classifying the recycled materials into natural colors and colored colors according to the color classification of the recycled materials;
13. determining classification according to an internal dyeing process, and classifying the classification into fluorescence and non-fluorescence;
14. according to the category of fading process, the method is divided into pulp-free type and pulp-containing type.
Table 1 is a classification table finally formed by sorting classification.
Further, the color stripping is divided into the following steps (as shown in fig. 2):
first water: reusing water, adding caustic soda and sodium hydrosulfite, raising the temperature to 100 ℃ for 30 minutes, and directly discharging;
the second water: washing with recycled water at normal temperature for 7 minutes, and discharging;
and (3) third water: adding alkali and hydrogen peroxide into the reuse water, raising the temperature to 105 ℃ for 30min, and directly discharging;
fourth water: adding glacial acetic acid into cold water at normal temperature, washing for 10 minutes, and discharging;
fifth water: washing with cold water and normal temperature water for 7 minutes, and discharging;
further, the fine picking operation method is divided into the following two forms:
5.1 Fine picking mode of dyed yarn and dyed cloth
5.1.1 in each process production of yarn dyed, according to the order characteristics process use raw yarn classify, divide into pure cotton colored yarn, pure cotton colored cloth, unify and put into appointed storage area turnover case.
And 5.1.2, recovering the pure cotton colored yarns and the colored cloth in each area after work attendance every day.
5.1.3 simply picking up the recycled dyed yarns and dyed fabrics and cleaning up the internal sundries and the like.
And 5.1.4, loading the selected colored yarns and colored cloth into a cake making machine, and arranging cake making.
5.1.5 the dyed yarn and the dyed cloth are discoloured and dried after being patted, the discoloured yarn and the dyed cloth are washed clearly after being dried, and the rest is qualified regenerated cotton raw material.
5.2 Fine picking mode of natural color yarn and natural color cloth
5.2.1 in the production process of each printing and dyeing process, the raw yarns used in the process are classified according to the characteristics of orders, are divided into pure cotton natural color yarns and natural color cloth, and are uniformly put into a turnover box in a specified storage area.
And 5.2.2, recovering the pure cotton natural color yarns and the pure cotton natural color cloth in each area after work attendance every day.
5.2.3 simply picking up the recycled dyed yarns and dyed fabrics and cleaning up the internal sundries and the like.
5.2.4 the selected natural color yarn and the natural color cloth enter a purple light lamp dark room for fine slivering, and the fluorescence is selected out.
The rest is qualified pure cotton natural color type regenerated cotton raw material.
Further, the sources before sorting are: waste yarn produced by spinning, waste silk, yarn dyed and printed fabric produced in the processes of producing the printed fabric, waste selvage yarn, leftover materials and waste cloth.
Further, the specific operation of combing fine opening is as follows:
the materials are uniformly supplied to the feeding belt manually, and are extruded by the roller and sent to the front of the carding roller, the materials are combed by the hook of the carding roller, wherein impurities are thrown away along the tangential direction of the carding roller under the action of the centrifugal force of the carding roller, the combed fibers enter a material transfer dust removal system and enter the next process, and dust and short fibers enter a dust collection system through a dust centralized recovery processing system;
the material processed by the NSX-FS600 series fiber carding machine is fed into the inlet of the roller in the next process by the material transfer system, is extruded by the roller and is sent to the front of the carding roller, and is loosened by the hook of the carding roller. Wherein, the impurities are thrown away along the tangential direction of the carding roller under the centrifugal force action of the carding roller, and the fiber materials are further carded. And the carded fibers enter the next procedure from the material transfer system, and are repeatedly carded by the carding roller to obtain the standard fibrous material.
The material processed by the cutting machine (NSX-QD350) is cut into pieces smaller than 450mm and is manually and uniformly supplied to a feeding belt to enter a group of NSX-FS600 openers, and then a pipeline is fed to a group of NSX-FS600 openers for continuous processing.
The types of the relevant devices in the present embodiment are: cutting machine (NSX-QD350), feeding box (NSX-SL1500), multi-bin cotton mixing box (NXS-FX-6)
The device comprises a regenerated fiber carding machine 1(NSX-FS600-2), a regenerated fiber carding machine 2(NSX-FS600-6), a dust removal chamber (NSX-JC5000), a gold fire detector (NSX-JHF), a bridge type magnet-cylinder dust cage-fan-loose fiber cake press (IBAL266LIANFA. PDF) -a dryer (IBALLIANFA (1), PDF) -NSX-YD2-30T type double-station hydraulic baler (the application of the device in each section of process is a technology which is mastered by a person skilled in the art, and the description is omitted here).
Processing fading damages the strength of the fiber, the fiber length is reduced by opening in the process, in order to ensure the yarn quality of the regenerated cotton yarn and the spinnability in the spinning process, the various opened fibers are analyzed by combining domestic and foreign models, so that a large amount of data are acquired by multiple comparison, and spinning test detection and weaving are carried out to establish the standard for processing the regenerated cotton (as shown in table 2):
table 2 compares 8 split cotton samples and combed noils using the aft instrument from the UST company.
Because of the influence of residual light color and high short fiber content, the spinning test passes 16S-50S data accumulation according to the textile spinnability requirement, the proportion is considered to be controlled to be 30-40%, 40S-50S needs to go through the combing and compact spinning process, the fibers are classified into the types of fibers with or without fluorescence, dyeable and bleachable according to the types of the color fibers, and the basic yarn forming standard of the fibers for the renewable cotton yarns is established as shown in Table 3:
table 3 is a basic yarn formation standard for fibers for renewable cotton yarn.
Currently, the staple fiber regenerated yarns are classified: the cotton type fiber yarn is made of waste leftover materials and the like, and the polyester staple fiber yarn is made of bottle chips through melting and spinning. Because the nature or structure of the fiber is the same as that of natural fiber or chemical fiber, the quality and serviceability of the produced yarn and fabric are not affected.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The production and processing technology of the recycled regenerated cotton is characterized in that: the process flow is as follows:
(1) sorting, namely sorting the recovered fibers according to fiber attributes, coloring degrees and fluorescence;
(2) the cake making process includes the steps of manually and continuously placing a material net barrel, automatically rotating clockwise to spray water, compressing and hammering into hollow cakes with the inner diameter of 860mm, the outer diameter of 1860mm, the height of 300mm and the weight of 400 kg; the matched stripping dryer is large and small, and three cakes are transported and hoisted into the stripping machine in a group;
(3) stripping, and moving into a high-pressure crane for fading and washing after caging;
(4) drying, drying for several times by drying equipment, and cooling at normal temperature;
(5) fine picking, namely conveying the material subjected to color stripping and drying through a vibrating cotton box fan, passing through a picking platform, manually sorting and then dividing raw cotton, chemical fiber or special fiber of each grade;
(6) the raw materials are uniformly spread on a conveying belt, the conveying belt conveys the raw materials to an inlet of the conveying roller, a roller tightly extrudes the raw materials to the front of a movable knife roller, and the raw materials are cut into sections through the shearing of a movable knife and a fixed knife; the cut materials are conveyed out through a conveyer belt;
(7) carding and opening, removing impurities in the cotton spinning material by mechanical centrifugal force generated by high-speed operation of the nail roller, tearing the cotton spinning material and loosening the cotton spinning material by a multi-roller; adopting two roller saw-stabbing carding needles for coarse opening;
(8) combing, fine opening, removing impurities in the cotton textile by mechanical centrifugal force generated by high-speed operation of the nail roller, tearing the cotton textile and loosening the cotton textile by a multi-roller; finely loosening the fibers into single fibers by adopting six rollers with different card wire densities and fully mixing the single fibers;
(9) and packaging, namely packaging the processed regenerated cotton by packaging equipment.
2. The production and processing technology of the recycled regenerated cotton as claimed in claim 1, characterized in that: the sorting in the step (1) has the following sorting conditions:
(11) classifying the raw yarns according to the components of the raw yarns, and classifying the raw yarns into four types of pure cotton, polyester cotton, cotton-containing fiber and other mixed fiber;
(12) classifying the recovered substances into a natural color class and a colored class according to the color of the recovered substances;
(13) determining classification according to an internal dyeing process, and classifying the classification into fluorescence and non-fluorescence;
(14) and classifying the materials into pulp-free and pulp-containing types according to fading processes.
3. The production and processing technology of the recycled regenerated cotton as claimed in claim 1, characterized in that: and (3) the cake making in the step (2) is a round cake which is compressed by a loose fiber cake press and has certain density and can be subjected to color stripping and flushing.
4. The production and processing technology of the recycled regenerated cotton as claimed in claim 1, characterized in that: the color stripping in the step (3) comprises the following steps:
(31) and first water: reusing water, adding caustic soda and sodium hydrosulfite, raising the temperature to 100 ℃ for 30 minutes, and directly discharging;
(32) and the second water: washing with recycled water at normal temperature for 7 minutes, and discharging;
(33) and the third water: adding alkali and hydrogen peroxide into the reuse water, raising the temperature to 105 ℃ for 30min, and directly discharging;
(34) and fourth water: adding glacial acetic acid into cold water at normal temperature, washing for 10 minutes, and discharging;
(35) and fifth water: washing with cold water and normal temperature water for 7 minutes, and discharging;
5. the production and processing technology of the recycled regenerated cotton as claimed in claim 1, characterized in that: the drying in the step (4) mainly adopts the step-by-step temperature rise in different periods to carry out drying in different degrees, and the specific steps are as follows:
(41) firstly squeezing water twice for 80 seconds each time;
(42) then 10 minutes at 50 ℃;
(43) then 85 ℃ for 30 minutes;
(44) then drying at 105 ℃ for 90 minutes; cooling to 85 ℃ after drying, discharging, and naturally cooling and discharging.
6. The production and processing technology of the recycled regenerated cotton as claimed in claim 1, characterized in that: the fine sorting in the step (5) comprises the following steps: the fine picking mode of the dyed yarns and the dyed cloth and the fine picking mode of the natural yarns and the natural cloth.
7. The production and processing technology of the recycled regenerated cotton as claimed in claim 1, characterized in that: and (4) the cutting operation of the step (6) is carried out in sequence, and the length of each cutting is about 45 mm.
8. The production and processing technology of the recycled regenerated cotton as claimed in claim 1, characterized in that: the coarse opening of the step (7) adopts two-roller saw-stabbed carding needle coarse opening, and the specific operation is as follows:
(71) the materials are uniformly supplied to the feeding belt manually, and are extruded by the roller and sent to the front of the carding roller, the materials are combed by the hook of the carding roller, wherein impurities are thrown away along the tangential direction of the carding roller under the action of the centrifugal force of the carding roller, the combed fibers enter a material transfer dust removal system and enter the next process, and dust and short fibers enter a dust collection system through a dust centralized recovery processing system;
(72) feeding the material processed by the NSX-FS600 series fiber carding machine into the inlet of a roller in the next process by a material transfer system, extruding the material by the roller and sending the extruded material to the front of a carding roller, and loosening the extruded material by the hook of the carding roller; the impurities are thrown away along the tangential direction of the carding roller under the action of the centrifugal force of the carding roller, the fiber materials are further carded, the carded fibers enter the next procedure through a material transfer system, and the fiber materials meeting the standard are obtained after being repeatedly carded by the carding roller.
9. The production and processing technology of the recycled regenerated cotton as claimed in claim 1, characterized in that: the fine combing and opening in the step (8) is to finely loosen six rollers with different card wire densities into single fibers to be fully mixed, and to adopt a multi-bin cotton mixing box and multi-roller fiber carding equipment, the specific operation is as follows:
(81) the materials are uniformly supplied to the feeding belt manually, and are extruded by the roller and sent to the front of the carding roller, the materials are combed by the hook of the carding roller, wherein impurities are thrown away along the tangential direction of the carding roller under the action of the centrifugal force of the carding roller, the combed fibers enter a material transfer dust removal system and enter the next process, and dust and short fibers enter a dust collection system through a dust centralized recovery processing system;
(82) feeding the material processed by the NSX-FS3150 series fiber carding machine into the inlet of a roller in the next working procedure by a material transfer system, extruding the material by the roller and sending the extruded material to the front of a carding roller, and loosening the extruded material by the hook of the carding roller; wherein, the impurities are thrown away along the tangential direction of the carding roller under the centrifugal force action of the carding roller, and the fiber materials are further carded; and the carded fibers enter the next procedure from the material transfer system, and are repeatedly carded by the carding roller to obtain the standard fibrous material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010058705.4A CN111304787B (en) | 2020-01-18 | 2020-01-18 | Production and processing technology of recycled regenerated cotton |
Applications Claiming Priority (1)
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| CN112430873B (en) * | 2020-11-12 | 2023-01-13 | 浙江华孚色纺有限公司 | Recycled cotton raw material, preparation method thereof, and yarn and fabric formed by same |
| CN114000236A (en) * | 2021-11-12 | 2022-02-01 | 张家港市光明毛纺织有限公司 | Production method of colored straight-strip wool-spraying fancy yarn |
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| JP3159787B2 (en) * | 1992-06-24 | 2001-04-23 | ユニチカ株式会社 | Manufacturing method of recycled cotton nonwoven fabric |
| DE19704183A1 (en) * | 1997-02-05 | 1998-08-06 | Voith Sulzer Stoffaufbereitung | Bleaching fibres from recycled paper |
| WO2001031096A1 (en) * | 1999-10-26 | 2001-05-03 | Stellamcor, Gmbh | A fully automated textile waste processing system and method for the purpose of opening, cleaning, and bit elimination |
| KR20120111224A (en) * | 2011-03-31 | 2012-10-10 | 임창민 | Manufacturing method of recycled nonwoven |
| WO2013048948A1 (en) * | 2011-09-26 | 2013-04-04 | Tintoria Piana Us, Inc. | Recycling cotton fiber from old mattresses |
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| CN107237011B (en) * | 2017-03-09 | 2019-04-30 | 林雁 | General life clothing waste textile fabric regenerates fiber-spinnable production line |
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