CN111691007A - Preparation process of bi-component superfine composite fiber - Google Patents
Preparation process of bi-component superfine composite fiber Download PDFInfo
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- CN111691007A CN111691007A CN202010446226.XA CN202010446226A CN111691007A CN 111691007 A CN111691007 A CN 111691007A CN 202010446226 A CN202010446226 A CN 202010446226A CN 111691007 A CN111691007 A CN 111691007A
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- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/06—Washing or drying
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
-
- 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
- D01F1/103—Agents inhibiting growth of microorganisms
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- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
Abstract
The invention discloses a preparation process of bi-component superfine composite fiber, which comprises the following steps of 1) mixing and drying PET slices and antibacterial master batches; 2) drying the semi-dull PA6 slices; 3) PET slices and antibacterial master batches are melted; 4) PA 6; 5) spinning at high speed; 6) drawing and winding, and disclosing specific production parameters in the process in detail. The preparation process of the bi-component superfine composite fiber is convenient to implement, the addition ratio of the antibacterial agent is obtained through a plurality of tests, the optimal specific parameters of the bi-component superfine composite fiber after the antibacterial agent is added are increased, the reject ratio of the antibacterial superfine fiber is reduced, and the production efficiency is improved.
Description
Technical Field
The invention relates to the field of fiber material preparation, in particular to a preparation process of a bi-component superfine composite fiber.
Background
With the continuous improvement of living conditions, the requirements of people on home textiles, fabrics and the like are higher and higher, the output of traditional high-quality fibers such as silk and hemp cannot meet the demand, the price is always high, and chemical fibers have great advantages in production, high output and low cost. The chemical fiber fabric needs to break through in the aspects of comfort and softness, the differential production of synthetic fibers becomes the main research direction in recent years, the lower the linear density of the fiber is, the more excellent the performance is, the superfine fiber is generally obtained by fiber opening and cracking after the forming of bicomponent fiber, and meanwhile, the property of resisting mildew and deodorization is also continuously researched, because the addition of the antibacterial agent has influence on the dissolution temperature, the filament outlet temperature and the like of fiber granules, the requirement of a given production process needs to be correspondingly and uncertainly changed, and great difficulty is brought to the production and processing.
The invention aims to provide a preparation process of a bi-component superfine composite fiber, which aims to solve the problems in the background technology.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects, the invention aims to provide a preparation process of the bi-component superfine composite fiber, which is convenient to implement, obtains the addition ratio of the antibacterial agent through a plurality of tests, increases the optimal specific parameters of the bi-component composite fiber after the antibacterial agent is added, reduces the fraction defective of the antibacterial superfine fiber and improves the production efficiency.
The technical scheme is as follows: in order to achieve the above object, the present invention provides a process for preparing a bicomponent superfine composite fiber, comprising the steps of:
1) uniformly mixing 5-8% of antibacterial master batch by mass into the PET slices, and drying by using a vacuum drum;
2) drying the PA6 semi-dull slice by using a vacuum drum;
3) feeding the mixture dried in the step 1 into a first screw extruder, and performing melt extrusion and filtration to obtain a No. 1 metering pump;
4) conveying the PA6 slices dried in the step 2 into a second screw extruder, and carrying out melt extrusion and filtration to a No. 2 metering pump;
5) regulating the supply amount of the No. 1 metering pump and the No. 2 metering pump, pumping the molten slurry into a biphenyl spinning box, mixing and extruding on a spinneret plate to form protofilaments;
6) and (5) carrying out side air blowing cooling, drafting and shaping, oiling, winding and shaping on the protofilament obtained in the step (5).
Further, in the preparation process of the bi-component superfine composite fiber, the antibacterial master batch in the step 1 is a micron-sized mixture of titanium dioxide and silver zirconium phosphate, the specific gravity of the titanium dioxide and the silver zirconium phosphate is 4:1, an antibacterial agent which is safe, environment-friendly and harmless to a human body is selected, the silver ion content is ensured in a safe range through proper proportion, and the composite antibacterial effect is improved.
Further, in the preparation process of the bi-component superfine composite fiber, the drying in the step 1 is divided into two times of drying, the first time of drying is carried out at the temperature of 120 +/-5 ℃ for 5 hours, then the temperature is adjusted to 170 ℃ for 8 hours, so that the water content is less than 30PPM, and the step 2 of drying is carried out at the temperature of 95 ℃ for 6 hours, so that the water content is less than 80PPM, thereby ensuring the spinning quality.
Further, in the preparation process of the bi-component superfine composite fiber, in the step 3, the temperature of each interval of the first screw extruder is between 272 ℃ and 284 ℃; in the step 4, the temperature of each interval of the second screw extruder is between 260 and 275 ℃, and the optimal melting parameter is tested according to the material hot melting performance and the influence of the antibacterial agent on the material hot melting performance.
Further, in the preparation process of the bi-component superfine composite fiber, the filtering in the step 3 is performed twice by three layers of 400-mesh metal nets, and due to the addition of the antibacterial agent, the filtering times are increased, so that the uneven fiber structure caused by impurities is further avoided.
Further, in the preparation process of the bi-component superfine composite fiber, in the step 5, the pressure of the No. 1 metering pump and the pressure of the No. 2 metering pump are respectively 5.8MPa and 5.2MPa, and the mass ratio of the input molten slurry amount is 2.2:1, so that the cross section of the formed fiber has the best quality, the subsequent fiber opening treatment is facilitated, the broken ends are reduced, and the quality of the superfine fiber is improved.
Further, in the preparation process of the bicomponent superfine composite fiber, a spinneret plate shaped like a Chinese character 'mi' is selected in the step 5, and the temperature of the spinneret plate is 287 ℃.
Further, in the preparation process of the bi-component superfine composite fiber, in the step 6, the cross air blow cooling temperature is 18-20 ℃, the air speed is 0.5m/s, and the relative humidity is 75-80%, so that the two components are prevented from being split in advance, and the internal heat is dissipated as fast as possible.
Further, in the preparation process of the bi-component superfine composite fiber, the drafting and shaping temperature in the step 6 is 155 ℃, the drafting ratio is 9:1, the winding and shaping winding speed in the step 6 is 3100r/min, and the production efficiency is improved on the premise of ensuring the spinning quality.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the preparation process of the bi-component superfine composite fiber, the antibacterial agent is added in the fiber slice, so that the superfine single fiber formed after the splitting of the bi-component composite fiber has lasting antibacterial performance.
2. According to the preparation process of the bi-component superfine composite fiber, the influence of the antibacterial agent on the composite fiber forming is researched through experiments, important parameters in the composite fiber forming are obtained through multiple experiments, the production parameters are adjusted, the qualification rate of the composite fiber is improved, and the breakage and the cracking in advance are prevented.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The invention is further elucidated with reference to the drawings and the embodiments.
Example one
The preparation process of the bicomponent superfine composite fiber shown in figure 1 comprises the following steps:
1) uniformly mixing 6% of antibacterial master batch by mass into the PET slices, and drying by using a vacuum drum;
2) drying the PA6 semi-dull slice by using a vacuum drum;
3) feeding the mixture dried in the step 1 into a first screw extruder, and performing melt extrusion and filtration to obtain a No. 1 metering pump;
4) conveying the PA6 slices dried in the step 2 into a second screw extruder, and carrying out melt extrusion and filtration to a No. 2 metering pump;
5) regulating the supply amount of the No. 1 metering pump and the No. 2 metering pump, pumping the molten slurry into a biphenyl spinning box, mixing and extruding on a spinneret plate to form protofilaments;
6) and (5) carrying out side air blowing cooling, drafting and shaping, oiling, winding and shaping on the protofilament obtained in the step (5).
Further, in the preparation process of the bi-component superfine composite fiber, the antibacterial master batch in the step 1 is a micron-sized mixture of titanium dioxide and silver zirconium phosphate, and the specific gravity of the titanium dioxide and the silver zirconium phosphate is 4: 1.
Further, in the preparation process of the bi-component superfine composite fiber, the drying in the step 1 is divided into two times of drying, the first time of drying is carried out at the temperature of 120 ℃ for 5 hours, then the temperature is adjusted to 170 ℃ for 8 hours, and the water content is measured to be 28PPM, and the step 2 of drying is carried out at the temperature of 95 ℃ for 6 hours, and the water content is measured to be 72 PPM.
Further, in the preparation process of the bi-component superfine composite fiber, in the step 3, the temperature of each interval of the first screw extruder is 276 ℃; the temperature of each zone of the second screw extruder in the step 4 is 268 ℃.
Further, in the preparation process of the bi-component superfine composite fiber, the filtering in the step 3 is three-layer 400-mesh metal net twice filtering.
Further, in the preparation process of the bi-component superfine composite fiber, in the step 5, the pressure of the No. 1 metering pump and the pressure of the No. 2 metering pump are respectively 5.8MPa and 5.2MPa, and the mass ratio of the input molten slurry amount is 2.2: 1.
Further, in the preparation process of the bicomponent superfine composite fiber, the temperature of the spinneret plate shaped like a Chinese character 'mi' in the step 5 is 287 ℃.
Further, in the preparation process of the bi-component superfine composite fiber, in the step 6, the cooling temperature of the cross air blow is 20 ℃, the air speed is 0.5m/s, and the relative humidity is 80%.
Further, in the preparation process of the bi-component superfine composite fiber, the drafting and shaping temperature in the step 6 is 155 ℃, the drafting ratio is 9:1, and the winding and shaping winding rotating speed in the step 6 is 3100 r/min.
The composite yarn obtained by the method has the breaking strength of more than 0.28cN/dtex, the breaking strength variation coefficient of 2.03, the breaking elongation of more than 148 percent, the breaking elongation variation coefficient of 3.25, the linear density of 249.3 dtex and the linear density variation coefficient of 0.21, and the antibacterial effect of the composite yarn reaches the SEK orange standard.
Example two
The preparation process of the bicomponent superfine composite fiber shown in figure 1 comprises the following steps:
1) uniformly mixing 8% of antibacterial master batch in the PET slices, and drying by using a vacuum drum;
2) drying the PA6 semi-dull slice by using a vacuum drum;
3) feeding the mixture dried in the step 1 into a first screw extruder, and performing melt extrusion and filtration to obtain a No. 1 metering pump;
4) conveying the PA6 slices dried in the step 2 into a second screw extruder, and carrying out melt extrusion and filtration to a No. 2 metering pump;
5) regulating the supply amount of the No. 1 metering pump and the No. 2 metering pump, pumping the molten slurry into a biphenyl spinning box, mixing and extruding on a spinneret plate to form protofilaments;
6) and (5) carrying out side air blowing cooling, drafting and shaping, oiling, winding and shaping on the protofilament obtained in the step (5).
Further, in the preparation process of the bi-component superfine composite fiber, the antibacterial master batch in the step 1 is a micron-sized mixture of titanium dioxide and silver zirconium phosphate, and the specific gravity of the titanium dioxide and the silver zirconium phosphate is 4: 1.
Further, in the preparation process of the bi-component superfine composite fiber, the drying in the step 1 is divided into two times of drying, the first time of drying is carried out at the temperature of 125 ℃ for 5 hours, then the temperature is adjusted to 170 ℃ for 8 hours, and the water content is measured to be 27PPM, and the step 2 of drying is carried out at the temperature of 95 ℃ for 6 hours, and the water content is measured to be 72 PPM.
Further, in the preparation process of the bi-component superfine composite fiber, in the step 3, the temperature of each interval of the first screw extruder is 281 ℃; the temperature of each section of the second screw extruder in the step 4 is 273 ℃.
Further, in the preparation process of the bi-component superfine composite fiber, the filtering in the step 3 is three-layer 400-mesh metal net twice filtering.
Further, in the preparation process of the bi-component superfine composite fiber, in the step 5, the pressure of the No. 1 metering pump and the pressure of the No. 2 metering pump are respectively 5.8MPa and 5.2MPa, and the mass ratio of the input molten slurry amount is 2.2: 1.
Further, in the preparation process of the bicomponent superfine composite fiber, the temperature of the spinneret plate shaped like a Chinese character 'mi' in the step 5 is 287 ℃.
Further, in the preparation process of the bi-component superfine composite fiber, in the step 6, the cooling temperature of the cross air blow is 20 ℃, the air speed is 0.5m/s, and the relative humidity is 75%.
Further, in the preparation process of the bi-component superfine composite fiber, the drafting and shaping temperature in the step 6 is 155 ℃, the drafting ratio is 9:1, and the winding and shaping winding rotating speed in the step 6 is 3100 r/min.
The composite yarn obtained by the method has the breaking strength of more than 0.28cN/dtex, the breaking strength variation coefficient of 2.04, the breaking elongation of more than 147 percent, the breaking elongation variation coefficient of 3.25, the linear density of 249.3 dtex and the linear density variation coefficient of 0.21, and the antibacterial effect reaches the SEK orange standard.
The technical principles of the present invention have been described above in connection with specific embodiments, which are intended to explain the principles of the present invention and should not be construed as limiting the scope of the present invention in any way. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (9)
1. The preparation process of the bi-component superfine composite fiber is characterized by comprising the following steps:
1) uniformly mixing 5-8% of antibacterial master batch by mass into the PET slices, and drying by using a vacuum drum;
2) drying the PA6 semi-dull slice by using a vacuum drum;
3) feeding the mixture dried in the step 1 into a first screw extruder, and performing melt extrusion and filtration to obtain a No. 1 metering pump;
4) conveying the PA6 slices dried in the step 2 into a second screw extruder, and carrying out melt extrusion and filtration to a No. 2 metering pump;
5) regulating the supply amount of the No. 1 metering pump and the No. 2 metering pump, pumping the molten slurry into a biphenyl spinning box, mixing and extruding on a spinneret plate to form protofilaments;
6) and (5) carrying out side air blowing cooling, drafting and shaping, oiling, winding and shaping on the protofilament obtained in the step (5).
2. The process for preparing bicomponent ultrafine composite fiber according to claim 1, wherein: the antibacterial master batch in the step 1 is a micron-sized mixture of titanium dioxide and silver zirconium phosphate, and the specific gravity of the titanium dioxide and the silver zirconium phosphate is 4: 1.
3. The process for preparing bicomponent ultrafine composite fiber according to claim 1, wherein: the drying in the step 1 is divided into two times of drying, the temperature of the first time of drying is 120 +/-5 ℃ and lasts for 5 hours, then the temperature is adjusted to 170 ℃ and lasts for 8 hours, so that the water content is less than 30PPM, and the temperature of the drying in the step 2 is 95 ℃ and lasts for 6 hours, so that the water content is less than 80 PPM.
4. The process for preparing bicomponent ultrafine composite fiber according to claim 1, wherein: the temperature of each interval of the first screw extruder in the step 3 is between 272 and 284 ℃; the temperature of each interval of the second screw extruder in the step 4 is between 260 and 275 ℃.
5. The process for preparing bicomponent ultrafine composite fiber according to claim 1, wherein: the filtering in the step 3 is twice filtering by three layers of metal nets with 400 meshes.
6. The process for preparing bicomponent ultrafine composite fiber according to claim 1, wherein: in the step 5, the pressure of the No. 1 metering pump and the pressure of the No. 2 metering pump are respectively 5.8MPa and 5.2MPa, and the mass ratio of the input molten slurry amount is 2.2: 1.
7. The process for preparing bicomponent ultrafine composite fiber according to claim 1, wherein: and (5) selecting a spinneret plate shaped like a Chinese character 'mi', wherein the temperature of the spinneret plate is 287 ℃.
8. The process for preparing bicomponent ultrafine composite fiber according to claim 1, wherein: in the step 6, the cooling temperature of the cross air blow is 18-20 ℃, the air speed is 0.5m/s, and the relative humidity is 75-80%.
9. The process for preparing bicomponent ultrafine composite fiber according to claim 1, wherein: the drafting and shaping temperature in the step 6 is 155 ℃, the drafting ratio is 9:1, and the rotating speed of the winding and shaping bobbin in the step 6 is 3100 r/min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113181714A (en) * | 2021-04-06 | 2021-07-30 | 陈琳 | Bi-component filter cotton, and manufacturing method and application thereof |
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| CN105442088A (en) * | 2016-01-20 | 2016-03-30 | 段宏伟 | Superfine functional fiber, manufacturing method, super-soft functional towel manufactured by means of superfine functional fiber and method |
| CN107780038A (en) * | 2017-09-19 | 2018-03-09 | 江南大学 | A kind of antibacterial cooling function fabric and preparation method thereof |
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| CN113181714A (en) * | 2021-04-06 | 2021-07-30 | 陈琳 | Bi-component filter cotton, and manufacturing method and application thereof |
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