CN109594248B - Preparation method of pure-spinning regenerated cellulose fiber raw sliver - Google Patents
Preparation method of pure-spinning regenerated cellulose fiber raw sliver Download PDFInfo
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- CN109594248B CN109594248B CN201811434978.3A CN201811434978A CN109594248B CN 109594248 B CN109594248 B CN 109594248B CN 201811434978 A CN201811434978 A CN 201811434978A CN 109594248 B CN109594248 B CN 109594248B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
- D06B1/02—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by spraying or projecting
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
- D06M11/54—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur dioxide; with sulfurous acid or its salts
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
- D06M11/55—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
- D06M11/56—Sulfates or thiosulfates other than of elements of Groups 3 or 13 of the Periodic System
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/53—Polyethers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
Abstract
The invention belongs to the technical field of spinning methods, and particularly relates to a preparation method of pure-spun regenerated cellulose fiber raw sliver. The method comprises the following steps of regenerated cellulose fiber pretreatment → A002D plucker → A036B opener → A092A cotton feeder → A076C lap former → A186G carding machine → pure spinning regenerated cellulose fiber sliver, so that the difficulty of different fibers in the manufacturing of a blending process is reduced, and the industrial application range of the regenerated cellulose fibers is widened.
Description
Technical Field
The invention belongs to the technical field of spinning methods, and particularly relates to a preparation method of pure-spun regenerated cellulose fiber raw sliver.
Background
The regenerated fibers, the flax fibers, the bamboo fibers, the sisal fibers and other fibers can be made into limiting materials with different styles through a blending process, and the limiting materials can be applied to various fields, such as high-grade clothes and home textile fabrics.
CN107177917A discloses a method for producing worsted cotton flax high count yarn by cotton spinning equipment, which adopts pure cotton and flax blended high count yarn, and the cellulose fiber and cotton fiber have great difference in mixing and preparation processes, and the produced high count yarn has certain difference in performance, specifically the length difference of the cellulose fiber is great, the spinnability is low, and the tension is low, therefore, how to reduce the difficulty of different fibers in the manufacture of blended yarn by certain pretreatment process is a hot point of research from the past.
Disclosure of Invention
The invention aims to solve the technical problem of providing a preparation method of pure-spun regenerated cellulose fiber raw strips, which reduces the difficulty of different fibers in the manufacture of a blending process and improves the industrial application range of the regenerated cellulose fibers.
The invention is realized by adopting the following technical scheme:
a method for preparing pure spinning regenerated cellulose fiber raw sliver takes regenerated cellulose fiber as raw material, and the raw sliver is prepared by the following procedures in sequence: regenerated cellulose fiber pretreatment → A002D plucker → A036B opener → A092A feeder → A076C lapper → A186G carding machine → pure-spun regenerated cellulose fiber sliver.
After the regenerated cellulose fiber is pretreated by adopting the pretreatment solvent, the smoothness, the softness and the spinnability of the fiber can be increased, the friction coefficient of the fiber in the carding and spinning process is effectively reduced, meanwhile, the damage of the carding and the spinning to the regenerated cellulose fiber is reduced, the difficulty of different fibers in the manufacturing of a blending process is reduced, and the industrial application range of the regenerated cellulose fiber is improved.
In a preferred embodiment, the regenerated cellulose fiber pretreatment process comprises the following steps: carrying out pre-opening treatment on the regenerated cellulose fiber rope, spraying a pre-treatment solvent on the pre-opened regenerated cellulose fiber short rope, stewing and then carrying out steam explosion treatment. In the steam explosion treatment process, water vapor permeates into each pore of the fiber and forms a hydrogen bond with partial hydroxyl on a regenerated cellulose molecular chain, meanwhile, the conditions of high temperature, high pressure and water content can aggravate the damage to the hydrogen bond in the regenerated cellulose fiber, new hydroxyl is dissociated, the adsorption capacity of the regenerated cellulose fiber is increased, the water vapor among the pores in the regenerated cellulose fiber is instantaneously discharged into the air by instantaneous pressure release explosion, the hydrogen bond in the cellulose is broken, and the hydrogen bond among molecules is recombined, so that the hydrogen bond in a solvent molecule is broken, the cellulose is rapidly cooled to room temperature, a cellulose supermolecular structure is frozen, only a small part of the cellulose supermolecular structure is easy to enter between layers, the permeated solvent is further solvated with the cellulose macromolecular chain, the damage of the hydrogen bond in the residual molecule is caused, the motion of a glucose ring group is accelerated, and finally the complete damage of other crystal regions is caused, until the regenerated cellulose fiber is completely dissolved, the skin-friendly and soft performances of the regenerated cellulose fiber are improved through steam explosion treatment, and the method has the remarkable effects that the pretreatment time of the regenerated cellulose fiber is greatly reduced through the steam explosion treatment, the pretreatment process can be finished by using pure-spinning regenerated cellulose fiber raw strips which originally need more than 10 hours, the treatment time is shortened to less than 1 hour, and the production efficiency of enterprises is improved.
Preferably, the pre-opening treatment is specifically operated as follows: the whole roll of regenerated cellulose fiber rope is divided into short ropes with the length of 60-80 mm, the short ropes are soaked in water solution for 5-10 min, and then the short ropes are fished out and drained. Through the processes of cutting, soaking and draining, the regenerated cellulose fiber rope can realize a good opening effect, and meanwhile, the whole form of the regenerated cellulose fiber rope is basically kept as the original form, so that the regenerated cellulose fiber rope is protected during subsequent treatment.
In a preferred scheme, the pretreatment solvent comprises, by mass, 10-15 parts of polyoxyethylene, 3-5 parts of anhydrous sodium sulfate, 2-6 parts of sodium sulfite and 50-70 parts of water. The polyethylene oxide is a water-soluble and thermoplastic nonionic linear high polymer, has the properties of flocculation, thickening, slow release, lubrication, dispersion, retention, water retention and the like, is non-toxic and non-irritant, has the effects of soaking and water retention on regenerated cellulose fiber short ropes after being compounded with anhydrous sodium sulfate, sodium sulfite and water, has good spreadability and permeability on the regenerated cellulose fibers, can increase the smoothness and softness of the fibers, has high viscosity at low concentration, and can protect the morphological characteristics of the cellulose fibers during steam explosion treatment.
Because the aqueous solution of polyethylene oxide has certain viscosity, when the regenerated cellulose fiber rope is directly sprayed, the gaps in the regenerated cellulose fiber rope can be completely wetted within more than 1h of permeation time, the invention carries out pre-loosening treatment of soaking the regenerated cellulose fiber rope in the pre-aqueous solution, so that the gaps in the regenerated cellulose fiber rope are wetted by water, the total time consumption is less than 10min, the time consumed by pre-treatment solvent treatment is obviously shortened, and the processing efficiency for preparing pure-spun regenerated cellulose fiber raw strips is improved.
Preferably, the spraying amount of the pretreatment solvent is 0.2-1% of the dry weight of the regenerated cellulose fiber short rope.
In a preferable scheme, the stewing time of the regenerated cellulose fiber short rope is 20-30 min.
In a preferred scheme, the steam explosion treatment is carried out at the temperature of 150-170 ℃ for 3-5 min.
The regenerated cellulose fiber short rope is pretreated by the pretreatment solvent, the regenerated cellulose fiber short rope can expand to a certain extent, the permeation strength of water vapor during steam explosion treatment is increased, meanwhile, in the steam explosion generation process, the length of the regenerated cellulose fiber short rope is 60-80 mm, the surface of the regenerated cellulose fiber short rope is wrapped by polyethylene oxide, and only the regenerated cellulose fiber short rope is treated for 3-5 min under the steam explosion condition of 150-170 ℃, so that a good treatment effect can be obtained, the skin-friendly and soft performance of the regenerated cellulose fiber is improved, the form of the regenerated cellulose fiber is not damaged, and other properties of the product are maintained to be basically unchanged.
The invention has the beneficial effects that:
1. the pretreatment solvent adopted by the invention has good spreadability and permeability on the regenerated cellulose fiber, can increase the smoothness and the softness of the fiber, reduce the difficulty of different fibers in the manufacture of a blending process and improve the industrial application range of the regenerated cellulose fiber.
2. Polyethylene oxide is a water-soluble and thermoplastic nonionic linear high polymer, the solution of the polyethylene oxide has high viscosity under low concentration, has the properties of flocculation, thickening, slow release, lubrication, dispersion, retention, water retention and the like, is non-toxic and non-irritant, can enable regenerated cellulose fibers to expand to a certain extent through pretreatment, is favorable for increasing the permeation strength of water vapor, can obtain good treatment effect under proper steam explosion conditions because the length of a short rope of the regenerated cellulose fibers is 60-80 mm and the surface of the short rope of the regenerated cellulose fibers is coated by polyethylene oxide in the steam explosion process, can obtain good treatment effect, improves the skin-friendly and soft properties of the regenerated cellulose fibers, can not damage the short bundle form of the regenerated cellulose fibers, maintains other properties of products basically unchanged, and greatly reduces the production time by adopting a steam explosion treatment technology, the production efficiency is improved.
3. According to the method, the regenerated cellulose fiber rope is subjected to pre-loosening treatment of pre-soaking in the pre-water solution, so that the inner gap of the regenerated cellulose fiber rope is wetted by water, the total time consumption is less than 10min, the time consumed by pretreatment solvent treatment is obviously shortened, and the processing efficiency of preparing pure-spun regenerated cellulose fiber raw strips is improved.
Detailed Description
The technical solutions in the examples are clearly and completely described below. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example 1
The preparation method of the pure-spinning regenerated cellulose fiber raw sliver is characterized in that the raw sliver is prepared by taking the regenerated cellulose fiber as a raw material through the following steps in sequence:
s1, dividing the whole roll of regenerated cellulose fiber rope into short ropes with the length of 60mm, soaking the short ropes in an aqueous solution for 5min, and then fishing out and draining off water;
s2, spraying a pretreatment solvent, wherein the pretreatment solvent comprises 10 parts of polyethylene oxide, 5 parts of anhydrous sodium sulfate, 2 parts of sodium sulfite and 50 parts of water, and the spraying amount of the pretreatment solvent is 1% of the dry weight of the regenerated cellulose fiber short rope;
s3, stewing for 20 min;
s4, performing steam explosion treatment at 150 ℃, wherein the steam explosion treatment time is 3 min;
then preparing pure spinning regenerated cellulose fiber raw strips by an A002D bale plucker, an A036B cotton opener, an A092A cotton feeder, an A076C lap former and an A186G cotton carding machine in sequence.
Example 2
The preparation method of the pure-spinning regenerated cellulose fiber raw sliver is characterized in that the raw sliver is prepared by taking the regenerated cellulose fiber as a raw material through the following steps in sequence:
s1, dividing the whole roll of regenerated cellulose fiber rope into short ropes with the length of 80mm, soaking the short ropes in an aqueous solution for 10min, and then fishing out and draining off water;
s2, spraying a pretreatment solvent, wherein the pretreatment solvent comprises 15 parts of polyethylene oxide, 3 parts of anhydrous sodium sulfate, 6 parts of sodium sulfite and 70 parts of water, and the spraying amount of the pretreatment solvent is 0.2% of the dry weight of the regenerated cellulose fiber short rope;
s3, stewing for 30 min;
s4, performing steam explosion treatment at 160 ℃, wherein the steam explosion treatment time is 5 min;
then preparing pure spinning regenerated cellulose fiber raw strips by an A002D bale plucker, an A036B cotton opener, an A092A cotton feeder, an A076C lap former and an A186G cotton carding machine in sequence.
Example 3
The preparation method of the pure-spinning regenerated cellulose fiber raw sliver is characterized in that the raw sliver is prepared by taking the regenerated cellulose fiber as a raw material through the following steps in sequence:
s1, dividing the whole roll of regenerated cellulose fiber rope into short ropes with the length of 70mm, soaking the short ropes in an aqueous solution for 8min, and then fishing out and draining off water;
s2, spraying a pretreatment solvent, wherein the pretreatment solvent comprises 13 parts of polyethylene oxide, 4 parts of anhydrous sodium sulfate, 4 parts of sodium sulfite and 60 parts of water, and the spraying amount of the pretreatment solvent is 0.6% of the dry weight of the regenerated cellulose fiber short rope;
s3, stewing for 25 min;
s4, performing steam explosion treatment at 170 ℃, wherein the steam explosion treatment time is 4 min;
then preparing pure spinning regenerated cellulose fiber raw strips by an A002D bale plucker, an A036B cotton opener, an A092A cotton feeder, an A076C lap former and an A186G cotton carding machine in sequence.
Comparative example:
the regenerated cellulose cords used as the raw material in examples 1 to 3 were not subjected to any treatment.
| Detecting items | Dry breaking Strength (CN/dtex) | Elongation at break |
| Example 1 | 4.2 | 17.2％ |
| Example 2 | 4.1 | 17.4％ |
| Example 3 | 4.4 | 17.1％ |
| Comparative example | 4.7 | 16.8％ |
The present invention is illustrated by the above examples, but the present invention is not limited to the above process steps, i.e., it is not meant to imply that the present invention must rely on the above process steps to be practiced. It will be apparent to those skilled in the art that any modification of the present invention, equivalent substitutions of selected materials and additions of auxiliary components, selection of specific modes and the like, which are within the scope and disclosure of the present invention, are contemplated by the present invention.
Claims (5)
1. The preparation method of the pure-spinning regenerated cellulose fiber raw sliver is characterized in that the raw sliver is prepared by taking the regenerated cellulose fiber as a raw material through the following steps in sequence:
regenerated cellulose fiber pretreatment → A002D plucker → A036B opener → A092A feeder → A076C lapper → A186G carding machine → pure-spun regenerated cellulose fiber sliver;
the regenerated cellulose fiber pretreatment process comprises the following steps: the method comprises the steps of carrying out pre-opening treatment on a regenerated cellulose fiber rope, spraying a pre-treatment solvent on the pre-opened regenerated cellulose fiber, stewing and then carrying out steam explosion treatment, wherein the pre-treatment solvent comprises 10-15 parts of polyoxyethylene, 3-5 parts of anhydrous sodium sulfate, 2-6 parts of sodium sulfite and 50-70 parts of water.
2. A process for preparing a raw sliver of purely woven regenerated cellulose fibers according to claim 1, characterized in that the pre-opening treatment is carried out in particular by: the whole roll of regenerated cellulose fiber rope is divided into short ropes with the length of 60-80 mm, the short ropes are soaked in water solution for 5-10 min, and then the short ropes are fished out and drained.
3. The method for preparing the pure-spun regenerated cellulose fiber sliver of claim 2, wherein the spraying amount of the pretreatment solvent is 0.2-1% of the dry weight of the regenerated cellulose fiber short rope.
4. The method for preparing the pure-spun regenerated cellulose fiber raw sliver according to claim 2, wherein the stewing time of the regenerated cellulose fiber short rope is 20-30 min.
5. The method for preparing the pure-spun regenerated cellulose fiber raw sliver according to claim 1, wherein the steam explosion treatment condition is that the treatment is carried out at 150-170 ℃ for 3-5 min.
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| CN111005107B (en) * | 2019-12-25 | 2021-08-13 | 际华三五零九纺织有限公司 | High-count spun high-count yarn made of high-lun wood and production method and application thereof |
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