CN110983535A - Antibacterial yarn and production method and application thereof - Google Patents
Antibacterial yarn and production method and application thereof Download PDFInfo
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- CN110983535A CN110983535A CN201911356201.4A CN201911356201A CN110983535A CN 110983535 A CN110983535 A CN 110983535A CN 201911356201 A CN201911356201 A CN 201911356201A CN 110983535 A CN110983535 A CN 110983535A
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 229920000742 Cotton Polymers 0.000 claims abstract description 82
- 239000000835 fiber Substances 0.000 claims abstract description 82
- 238000000034 method Methods 0.000 claims abstract description 76
- 230000008569 process Effects 0.000 claims abstract description 63
- 229910001369 Brass Inorganic materials 0.000 claims abstract description 61
- 239000010951 brass Substances 0.000 claims abstract description 61
- 229920000728 polyester Polymers 0.000 claims abstract description 56
- 238000009960 carding Methods 0.000 claims abstract description 38
- 238000009987 spinning Methods 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 238000007664 blowing Methods 0.000 claims abstract description 10
- 238000004804 winding Methods 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 230000000845 anti-microbial effect Effects 0.000 claims description 8
- 239000004599 antimicrobial Substances 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 230000003385 bacteriostatic effect Effects 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 230000002045 lasting effect Effects 0.000 abstract description 4
- 230000035699 permeability Effects 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 210000002374 sebum Anatomy 0.000 description 3
- 230000028327 secretion Effects 0.000 description 3
- 210000004243 sweat Anatomy 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 241001481760 Erethizon dorsatum Species 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 206010020112 Hirsutism Diseases 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/449—Yarns or threads with antibacterial properties
-
- 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
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
- D10B2201/02—Cotton
-
- 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]
-
- 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
- D10B2401/00—Physical properties
- D10B2401/13—Physical properties anti-allergenic or anti-bacterial
-
- 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
- D10B2501/00—Wearing apparel
- D10B2501/02—Underwear
-
- 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
- D10B2503/00—Domestic or personal
- D10B2503/06—Bed linen
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention discloses an antibacterial yarn and a production method and application thereof, wherein the antibacterial yarn is formed by blending brass polyester fiber and fine cotton in a weight ratio of 70:30, and the number of the antibacterial yarn is 14.7 tex; the production method of the antibacterial yarn comprises the following steps: processing the raw materials sequentially through a blowing process, a cotton carding process, a drawing process, a roving process, a spinning process and a winding process to obtain antibacterial yarns; wherein, in the cotton carding process, the brass polyester fiber and the fine cotton are independently treated by adopting different process parameters; the drawing process is combined by one-time pre-drawing and three-time drawing. The antibacterial yarn provided by the invention is prepared by taking brass polyester fiber and fine cotton in a weight ratio of 70:30 as raw materials and sequentially performing blowing, cotton carding, drawing, roving, spinning and spooling processes; the antibacterial yarn produced by the invention is thin and excellent in quality, has the advantages of moisture absorption, air permeability, soft hand feeling, lasting antibacterial, bactericidal and bacteriostatic effects and the like, is safe and harmless to a human body, and is suitable for manufacturing underwear and bedding.
Description
Technical Field
The invention relates to the technical field of spinning, in particular to an antibacterial yarn and a production method and application thereof.
Background
With the increasing level of human consumption, the wearing demand is also developing to higher levels and requirements. Particularly, the application field of industrial textiles is expanded, so that the demand of environment-friendly and healthy functional textile raw materials is greatly increased. The birth of the novel environment-friendly, healthy and antibacterial copper modified polyester fiber opens up a novel health-care and healthy wearing concept, so that people can integrate higher environment-friendly and healthy requirements in the pursuit of beauty and comfort, and really realize the visible health and happiness in the ground.
In the process of wearing, a lot of sweat, sebum and other various human secretions are generated, and simultaneously, the sweat, the sebum and other various human secretions can be polluted by dirt in the environment, so that the sweat, the sebum and other various human secretions become an important medium in the propagation and transmission processes of germs, and therefore, textiles capable of resisting bacteria are needed to meet the requirement of health. Therefore, the copper modified polyester fiber is produced at the same time, which changes the harmful bacteria injury to the skin of the human body caused by the pollution of the natural environment and eliminates the body harm caused by the harmful bacteria injury to the human body.
The brass polyester fiber is functional fiber with antibacterial, bactericidal and bacteriostatic effects, can be spun purely, can also be blended with natural fiber and chemical fiber, and can cover the fields of various bedding articles, household fabrics, decorative fabrics, clothes, socks and the like.
However, the brass polyester fiber has the following defects: the brass polyester fiber has poor cohesion, and the cotton carding web is not easy to form and is easy to stick to rolls. Because of the above-mentioned disadvantages, a high-count yarn with a fine yarn and excellent quality cannot be obtained by spinning a brass polyester fiber in the prior art.
Disclosure of Invention
The invention aims to overcome the technical defects, provides an antibacterial yarn and a production method and application thereof, and solves the technical problem that high-count yarn with fine yarn and excellent quality cannot be obtained when brass polyester fiber is spun in the prior art.
In order to achieve the technical purpose, the invention adopts the technical scheme that:
in a first aspect, the invention provides an antibacterial yarn, which is formed by blending brass polyester fibers and fine cotton wool according to a weight ratio of 70:30, and the number of the antibacterial yarn is 14.7 tex.
Specifically, the brass polyester fiber meets at least the following performance criteria: the specific strength is 3.89CN/dtex, the elongation at break is 36.8 percent, the linear density is 1.5D, the length is 38mm, and the moisture regain is 0.8 percent;
the fine cotton wool at least meets the following performance standards: the length of the main body is 28.7mm, the moisture regain is 7.91%, the specific strength is 2.68cN/dtex, the short fiber rate below 16mm is 17.7%, the impurity content is 1.7%, and the micronaire value is 3.8.
Because the cohesion of the brass polyester fiber is poor, in order to increase the spinnability of the subsequent process, the brass polyester fiber and the fine cotton are mixed for spinning. The fine cotton wool fiber has good hygroscopicity, soft hand feeling and good sanitary performance, and the high count yarn for underwear and bedding can be prepared by selecting the brass polyester fiber to be mixed and spun with the fine cotton wool.
In a second aspect, the present invention provides a method for producing an antimicrobial yarn, the method comprising the steps of: the raw materials are processed by a blowing process, a cotton carding process, a drawing process, a roving process, a spinning process and a winding process in sequence to obtain the antibacterial yarn provided by the first aspect of the invention; wherein, in the cotton carding procedure, the brass polyester fiber and the fine cotton are separately treated by adopting different process parameters; the drawing process is combined by one-time pre-drawing and three-time drawing.
The production method of the antibacterial yarn comprises the following steps:
a blowing procedure: the descending speed of a beater of a bale plucker is 3mm each time, the rotating speed is 960r/min, the speed of a rotary trolley is 2.8r/min, a blade extends out of a rib for 3mm, the gauge of the beater and a balance roller is 12mm, the speed of a lap roller is 12r/min, the dry weight ration of a brass polyester fiber lap is 372g/m, the length of the lap is 30.6m, the dry weight ration of a fine-pile lap is 375.5g/m, and the length of the lap is 36.5 m; wherein, because brass polyester fiber cohesion is poor, the blowing process has installed roving anti-sticking device additional.
Cotton carding process: due to the difference of the properties of the brass polyester fiber and the fine cotton, the brass polyester fiber and the fine cotton need to be treated separately by adopting different process parameters, and the specific process parameters are as follows:
brass polyester fiber: the carding machine comprises a cylinder speed of 280r/min, a licker-in speed of 580r/min, a doffer speed of 20r/min, a cover plate speed of 140mm/min, a cylinder and licker-in gauge of 7-inch, a cotton feeding plate and a licker-in gauge of 14-inch, a cylinder and doffer gauge of 4-inch, a cylinder and cover plate 5-point gauge of 10-inch, 9-inch, 8-inch, 9-inch, a dust removing knife height is flat with a machine frame, an included angle between a knife back and a horizontal plane of the machine frame is 90 degrees, and a dry cotton carding weight is 19.18 g/m; the brass polyester fibers are fluffy, the electrostatic effect is large, the cotton fleece is easy to turn upwards when the cotton carding machine is driven, the cotton fleece is not easy to form and is easy to stick and roll, and the relative humidity of the brass polyester fibers is controlled to be 55-58% by humidifying the cotton fleece through a humidifier, so that the quality of the cotton carding cotton fleece is ensured.
Fine cotton wool: cylinder speed 355r/min, licker-in speed 880r/min, doffer speed 25r/min, cover plate speed 266mm/min, 7-inch spacing between cylinder and licker-in, 14-inch spacing between cotton feeding plate and licker-in, 4-inch spacing between cylinder and doffer, 5-point spacing between cylinder and cover plate being 8-inch × 7-inch × 8-inch spacing, dust-removing knife height being flat with machine frame, angle between knife back and machine frame horizontal plane being 90 deg., dry cotton carding weight being 19.2 g/m.
Specifically, the card clothing type in the cotton carding process is: card clothing MCH32, cylinder clothing AC2030 x 01550, doffer clothing AD4030 x 01890, licker-in rack AT5610 x 06311.
The brass fibers are colored fibers, if the brass fibers are mixed in the circular table, due to the fact that the linear density difference of the two fibers is large, the circular table grabbing easily causes uneven mixing, cotton rolls are different in color depth, color difference is generated, production of a later process is affected, cotton carding is separated, and the brass fibers and the colored fibers are mixed uniformly in a subsequent drawing process; meanwhile, because the brass polyester fiber has poor cohesion, in order to ensure the quality of the cotton net and reduce fiber damage, the low speed is adopted, the length of the brass polyester fiber is longer than that of the fine cotton wool fiber, and the distance between the cylinder and the cover plate is increased, so that the fibers can be better drawn.
Drawing: pre-merging and merging the first and third paths, pre-merging 8 brass polyester fibers, merging the brass polyester fibers, quantifying the dry weight of 17.92g/5 m, setting the roller gauge to be 12mm multiplied by 20mm, mechanically drafting by 8.39 times, and drafting by 1.6 times in a rear area; combining 7 pieces of the raw materials, and distributing the combined raw materials into brass polyester fiber/fine cotton wool 5/2, wherein the dry weight basis weight is 16.6g/5 m, the roller gauge is 10mm multiplied by 18mm, the mechanical drafting is 7.64 times, and the back zone drafting is 1.6 times; combining 7 pieces of the two, wherein the dry weight ration is 16.2g/5 m, the roller gauge is 10mm multiplied by 18mm, the mechanical drafting is 7.03 times, and the back zone drafting is 1.4 times; combining 7 combined yarns, wherein the dry weight ration is 16g/5 m, the roller gauge is 10mm multiplied by 18mm, the mechanical drafting is 6.95 times, and the back zone drafting is 1.3 times; because the cohesion force of the brass fiber is poor, the cotton carding process has the phenomenon of sticking, in order to ensure the unevenness of the sliver, the brass fiber is pre-combined and then combined with the fine cotton, 7 pieces of the brass fiber and the fine cotton are combined and distributed, 5 brass polyester slivers are combined and distributed according to the proportion of the pre-combined dry weight of the brass fiber and the cotton carding dry weight of the fine cotton, 2 fine cotton slivers are distributed, and the weight uniformity of the sliver is ensured; meanwhile, the drawing process is easy to generate flower, and the channel needs to be kept clean to ensure the quality.
In the actual production process, the inventor finds that the direct drawing weight unevenness rate is 1.5 percent, the fragment difference is large, the final drawing evenness is 4.3 percent, 3-pass drawing evenness is 3.16 percent and the drawing weight unevenness rate is 0.8 percent by adopting one-pass pre-drawing and 3-pass drawing production in the process.
Roving: the twist of the roving is 4.07 twist/10 cm, the roller gauge is 26mm multiplied by 37mm, the back zone drafting is 1.2 times, the jaw gauge is 7mm, the dry weight ration of the roving is 4.87 g/10m, the mechanical drafting is 6.7 times, the rotating speed of the front roller is 230r/min, the wet weight is 5g/10m, the tex is 500tex, the twist coefficient is 91, the diameter of the front roller is 28mm, and the palm pressing winding number is 2 circles; the roving process has large gauge length, avoids the phenomenon that the fiber is not drafted and hard ends appear, influences the evenness, masters the twist coefficient on a large scale, and increases the compactness of the structure of the sliver.
Spinning: the mechanical draft multiple is 35.9 times, the roller gauge is 19mm multiplied by 36mm, the draft multiple of the rear zone is 1.18 times, the jaw gauge is 2.5mm, the diameter of the front roller is 27mm, the rotating speed of the front roller is 163r/min, the twist number is 106 twist/10 cm, the twist coefficient is 387, the model PG1-4254 for a steel collar and the model W32130 # for a steel wire ring are added with a pressure bar for pinning; in the spinning process, a smaller back zone draft multiple and a smaller jaw spacing are adopted, the twist coefficient of the spun yarn is properly increased, and an upper pin of a pressure bar is additionally arranged. Although the draft of the spun yarn is mainly concentrated in the front zone, reasonable distribution of the draft in the rear zone is also important for improving the quality of the resultant yarn. The guiding force of the back zone drafting is controlled by a back jaw formed by the upper rubber ring and the lower rubber ring, and the control force is provided by holding the back jaw formed by the back rubber roller and the back roller. The pressure rod upper pin is additionally arranged between the two jaws in the rear area, a new additional friction force boundary is established in the rear drafting area, and the rear area roving strands are reasonably controlled, so that the position of a fiber speed change point in the rear area is stabilized, the fiber motion balance is ensured, and a better drafting effect is achieved.
A spooling process: electrical clearance parameters: neps N: 400%, short and thick S: 180% × 1.8cm, length and thickness L: 40% × 35cm, detail T: 35% x 30cm, producing a single yarn of brass polyester fibre/fine staple cotton 14.7tex, which is the antimicrobial yarn provided by the first aspect of the invention. The low-speed process principle is adopted in the spooling process, so that the deterioration of the quality of the finished yarn is reduced, and the neps and the hairiness of the finished yarn are prevented from being greatly increased.
Specifically, the equipment used in the production process comprises an A002C type automatic plucker, an A036B porcupine opener, an A092A type double-hopper cotton feeder, an A076C type lap former, an A186 carding machine, an FA305 type drawing frame, an FA456 roving frame, a DTM169 spinning frame and a 21C-S bobbin winder.
In a third aspect, the present invention provides the use of an antimicrobial yarn for the manufacture of intimate apparel and bedding articles, the antimicrobial yarn being as provided in the first aspect of the invention.
Compared with the prior art, the invention has the beneficial effects that:
the antibacterial yarn provided by the invention is prepared by taking brass polyester fiber and fine cotton in a weight ratio of 70:30 as raw materials and sequentially performing blowing, cotton carding, drawing, roving, spinning and spooling processes;
the antibacterial yarn produced by the invention is thin and excellent in quality, has the advantages of moisture absorption, air permeability, soft hand feeling, lasting antibacterial, bactericidal and bacteriostatic effects and the like, is safe and harmless to a human body, and is suitable for manufacturing underwear and bedding.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to avoid redundancy, the raw materials and specific production equipment used in the following embodiments of the present invention are summarized as follows:
the brass polyester fiber meets at least the following performance standards: the specific strength is 3.89CN/dtex, the elongation at break is 36.8 percent, the linear density is 1.5D, the length is 38mm, and the moisture regain is 0.8 percent;
the fine cotton wool at least meets the following performance standards: the length of the main body is 28.7mm, the moisture regain is 7.91%, the specific strength is 2.68cN/dtex, the short fiber rate below 16mm is 17.7%, the impurity content is 1.7%, and the micronaire value is 3.8;
the equipment that the production line adopted includes: the cotton machine comprises an A002C type automatic plucker, an A036B porcupine opener, an A092A type double-cotton-box cotton feeder, an A076C type lap former, an A186 carding machine, an FA305 type drawing frame, an FA456 roving frame, a DTM169 spinning frame and a 21C-S bobbin winder;
the types of card clothing in the cotton carding process are as follows: card clothing MCH32, cylinder clothing AC2030 x 01550, doffer clothing AD4030 x 01890, licker-in rack AT5610 x 06311.
Example 1
The embodiment provides an antibacterial yarn, which is produced by taking brass polyester fiber and fine cotton wool in a weight ratio of 70:30 as raw materials through the following process steps:
(1) procedure for cleaning cotton
Because the brass polyester fiber has poor cohesion, a roving anti-sticking device is additionally arranged in the blowing process, so that sticking is prevented; the descending speed of a beater of a bale plucker is 3mm each time, the rotating speed is 960r/min, the speed of a rotary trolley is 2.8r/min, a blade extends out of a rib for 3mm, the gauge of the beater and a balance roller is 12mm, the speed of a lap roller is 12r/min, the dry weight ration of a brass polyester fiber lap is 372g/m, the length of the lap is 30.6m, the dry weight ration of a fine cotton lap is 375.5g/m, and the length of the lap is 36.5 m.
(2) Carding process
Carding was produced on an a186 card. In the cotton carding process, due to the difference of the properties of the brass polyester fiber and the fine cotton, the brass polyester fiber and the fine cotton need to be treated separately by adopting different process parameters, and the specific process parameters are as follows:
in the cotton carding process, the brass polyester fiber is treated by the following process parameters: the carding machine comprises a cylinder speed of 280r/min, a licker-in speed of 580r/min, a doffer speed of 20r/min, a cover plate speed of 140mm/min, a cylinder and licker-in gauge of 7-inch, a cotton feeding plate and a licker-in gauge of 14-inch, a cylinder and doffer gauge of 4-inch, a cylinder and cover plate 5-point gauge of 10-inch, 9-inch, 8-inch, 9-inch, a dust removing knife height is flat with a machine frame, an included angle between a knife back and a horizontal plane of the machine frame is 90 degrees, and a dry cotton carding weight is 19.18 g/m; the brass polyester fiber is poor in cohesion, so that the cotton carding web is not easy to form and easy to stick, and the brass polyester fiber is subjected to humidification treatment through a humidifier, so that the relative humidity of the brass polyester fiber is controlled to be 55-58%, and the quality of the cotton carding web is ensured;
in the cotton carding process, the following technological parameters are adopted for treating the fine cotton wool: cylinder speed 355r/min, licker-in speed 880r/min, doffer speed 25r/min, cover plate speed 266mm/min, 7-inch spacing between cylinder and licker-in, 14-inch spacing between cotton feeding plate and licker-in, 4-inch spacing between cylinder and doffer, 5-point spacing between cylinder and cover plate being 8-inch × 7-inch × 8-inch spacing, dust-removing knife height being flat with machine frame, angle between knife back and machine frame horizontal plane being 90 deg., dry cotton carding weight being 19.2 g/m.
(3) Drawing process
Drawing is produced at low speed on an FA305 drawing frame, and is subjected to one-pass pre-merging and three-pass mixing, brass polyester fiber is pre-merged into 8 pieces for merging, the dry weight ration is 17.92g/5 m, the roller gauge is 12mm multiplied by 20mm, the mechanical drafting is 8.39 times, and the back zone drafting is 1.6 times; combining 7 pieces of the raw materials, and distributing the combined raw materials into brass polyester fiber/fine cotton wool 5/2, wherein the dry weight basis weight is 16.6g/5 m, the roller gauge is 10mm multiplied by 18mm, the mechanical drafting is 7.64 times, and the back zone drafting is 1.6 times; combining 7 pieces of the two, wherein the dry weight ration is 16.2g/5 m, the roller gauge is 10mm multiplied by 18mm, the mechanical drafting is 7.03 times, and the back zone drafting is 1.4 times; combining 7 combined yarns, wherein the dry weight ration is 16g/5 m, the roller gauge is 10mm multiplied by 18mm, the mechanical drafting is 6.95 times, and the back zone drafting is 1.3 times.
(4) Roving process
The roving is produced on an FA456A roving machine, the gauge is large, and the twist factor is mastered slightly large; the specific technological parameters in the roving process are as follows: the twist of the roving is 4.07 twist/10 cm, the roller gauge is 26mm multiplied by 37mm, the back zone drafting is 1.2 times, the jaw gauge is 7mm, the dry weight ration of the roving is 4.87 g/10m, the mechanical drafting is 6.7 times, the rotating speed of the front roller is 230r/min, the wet weight is 5g/10m, the tex is 500tex, the twist coefficient is 91, the diameter of the front roller is 28mm, and the palm pressing winding number is 2 circles.
(5) Spinning process
The spun yarn is produced by adopting compact spinning on a DTM169 type spinning machine, a smaller back zone drafting multiple and a smaller jaw spacing are adopted, the twist coefficient of the spun yarn is properly increased, and a pressure bar upper pin is additionally arranged. Although the draft of the spun yarn is mainly concentrated in the front zone, reasonable distribution of the draft in the rear zone is also important for improving the quality of the resultant yarn. The guiding force of the back zone drafting is controlled by a back jaw formed by the upper rubber ring and the lower rubber ring, and the control force is provided by holding the back jaw formed by the back rubber roller and the back roller. The pressure rod upper pin is additionally arranged between the two jaws in the rear area, a new additional friction force boundary is established in the rear drafting area, and the rear area roving strands are reasonably controlled, so that the position of a fiber speed change point in the rear area is stabilized, the fiber motion balance is ensured, and a better drafting effect is achieved. The specific technological parameters in the spinning process are as follows: the mechanical draft multiple of the spun yarn is 35.9 times, the gauge of the roller is 19mm multiplied by 36mm, the draft multiple of the rear zone is 1.18 times, the gauge of the jaw is 2.5mm, the diameter of the front roller is 27mm, the rotating speed of the front roller is 163r/min, the twist number is 106 twist/10 cm, the twist coefficient is 387, the model number is PG1-4254 for a steel collar and the model number is W32130 # for a steel wire ring.
(6) Spooling process
Single yarn winding is produced on an automatic winder in Japan village, and a Uster electronic yarn cleaner and an empty twist knotless technology are adopted to ensure that yarn defects are effectively removed. Electrical clearance parameters: neps N: 400%, short and thick S: 180% × 1.8cm, length and thickness L: 40% × 35cm, detail T: 35% x 30cm, producing a single yarn of brass polyester fiber/fine cotton wool 14.7tex, which is the antibacterial yarn.
Comparative example 1
The procedure of example 1 was repeated except that 7 pieces of the yarn were combined and distributed as 6/1 Brass polyester fiber/fine cotton wool in the drawing step.
Comparative example 2
The same procedure as in example 1 was repeated except that the draft ratio in the back zone was 1.2 times in the spinning step and no pressure bar was added.
Performance testing
The antibacterial yarns produced in example 1 and comparative examples 1-2 were tested for correlation properties according to conventional methods or national standards in the textile field, and the test results are shown in the following table:
the data in the table show that the antibacterial yarn prepared by the method has good quality, and the fabric woven by the antibacterial yarn produced by the method has the advantages of moisture absorption, air permeability, soft hand feeling, lasting antibacterial, bactericidal and bacteriostatic effects, safety and harmlessness to human bodies, and is suitable for manufacturing underwear and bedding.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the brass polyester fiber and the fine cotton are blended to produce the antibacterial yarn, the antibacterial yarn is fine and has excellent quality, and the problem that high count yarn with fine and excellent quality cannot be obtained when the brass polyester fiber is spun due to poor cohesion of the brass polyester fiber, difficulty in forming of a cotton carding cotton net and easiness in rolling is solved;
the method provided by the invention takes the brass polyester fiber and the fine cotton in a weight ratio of 70:30 as raw materials, sequentially carries out blowing, cotton carding, drawing, roving, spinning and spooling processes, and produces the antibacterial yarn with 40 counts by reasonably adjusting process parameters in each process;
the antibacterial yarn produced by the invention is thin and excellent in quality, has the advantages of moisture absorption, air permeability, soft hand feeling, lasting antibacterial, bactericidal and bacteriostatic effects and the like, is safe and harmless to a human body, and is suitable for manufacturing underwear and bedding.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The antibacterial yarn is characterized by being formed by blending brass polyester fibers and fine cotton wool according to the weight ratio of 70:30, and the number of the antibacterial yarn is 14.7 tex.
2. The antimicrobial yarn of claim 1, wherein the brass polyester fiber meets at least the following performance criteria: the specific strength is 3.89CN/dtex, the elongation at break is 36.8 percent, the linear density is 1.5D, the length is 38mm, and the moisture regain is 0.8 percent;
the fine cotton wool at least meets the following performance standards: the length of the main body is 28.7mm, the moisture regain is 7.91%, the specific strength is 2.68cN/dtex, the short fiber rate below 16mm is 17.7%, the impurity content is 1.7%, and the micronaire value is 3.8.
3. A method of producing an antimicrobial yarn according to any one of claims 1 to 2, comprising the steps of: processing the raw materials by a blowing process, a carding process, a drawing process, a roving process, a spinning process and a winding process in sequence to obtain the antibacterial yarn of any one of claims 1-2; wherein,
in the cotton carding process, the brass polyester fiber and the fine cotton are independently treated by adopting different process parameters;
the drawing process is combined by one-time pre-drawing and three-time drawing.
4. The method for producing the antibacterial yarn according to claim 3, wherein the treatment of the brass polyester fiber in the carding process is: the speed of a cylinder is 280r/min, the speed of a licker-in is 580r/min, the speed of a doffer is 20r/min, the speed of a cover plate is 140mm/min, the distance between the cylinder and the licker-in is 7-inch, the distance between a cotton feeding plate and the licker-in is 14-inch, the distance between the cylinder and the doffer is 4-inch, the distance between 5 points of the cylinder and the cover plate is 10-inch multiplied by 9-inch multiplied by 8-inch multiplied by 9-inch, the height of a dust removing knife is flat with a machine frame, the included angle between the knife back and the horizontal plane of the machine frame is 90 degrees, and the dry weight ration of cotton.
5. The method for producing the antibacterial yarn according to claim 3, wherein the treatment of the fine cotton in the carding process is: cylinder speed 355r/min, licker-in speed 880r/min, doffer speed 25r/min, cover plate speed 266mm/min, 7-inch spacing between cylinder and licker-in, 14-inch spacing between cotton feeding plate and licker-in, 4-inch spacing between cylinder and doffer, 5-point spacing between cylinder and cover plate being 8-inch × 7-inch × 8-inch spacing, dust-removing knife height being flat with machine frame, angle between knife back and machine frame horizontal plane being 90 deg., dry cotton carding weight being 19.2 g/m.
6. The process for producing an antibacterial yarn according to claim 3,
the pre-merging is as follows: 8 brass polyester fibers are combined, the dry weight ration is 17.92g/5 m, the roller gauge is 12mm multiplied by 20mm, the mechanical drafting is 8.39 times, and the back zone drafting is 1.6 times;
the combination of the three merging steps is as follows: combining 7 fibers, wherein the weight of the combined fiber is 5/2, the dry weight is 16.6g/5 m, the roller gauge is 10mm multiplied by 18mm, the mechanical drafting is 7.64 times, and the back zone drafting is 1.6 times;
two in the three-way combination are as follows: combining 7 pieces, wherein the dry weight ration is 16.2g/5 m, the roller gauge is 10mm multiplied by 18mm, the mechanical drafting is 7.03 times, and the back zone drafting is 1.4 times;
the three in the three-way combination is as follows: 7 pieces are combined, the dry weight ration is 16g/5 m, the roller gauge is 10mm multiplied by 18mm, the mechanical drafting is 6.95 times, and the back zone drafting is 1.3 times.
7. The method of producing an antimicrobial yarn of claim 3, wherein the roving process comprises: the twist of the roving is 4.07 twist/10 cm, the roller gauge is 26mm multiplied by 37mm, the back zone drafting is 1.2 times, the jaw gauge is 7mm, the dry weight ration of the roving is 4.87 g/10m, the mechanical drafting is 6.7 times, the rotating speed of the front roller is 230r/min, the wet weight is 5g/10m, the tex is 500tex, the twist coefficient is 91, the diameter of the front roller is 28mm, and the palm pressing winding number is 2 circles.
8. The method of producing an antibacterial yarn according to claim 3, wherein the spinning step comprises: the mechanical draft multiple is 35.9 times, the roller gauge is 19mm multiplied by 36mm, the draft multiple in the rear zone is 1.18 times, the jaw gauge is 2.5mm, the diameter of the front roller is 27mm, the rotating speed of the front roller is 163r/min, the twist number is 106 twist/10 cm, and the twist coefficient is 387.
9. The method for producing the antibacterial yarn according to claim 3, wherein a roving anti-curl device is additionally arranged in the blowing process; in the cotton carding process, brass polyester fiber is humidified, so that the relative humidity of the brass polyester fiber reaches 55-58%; and the pressurizing rod is pinned in the spinning process.
10. Use of the antimicrobial yarn of any one of claims 1-2 for the manufacture of intimate apparel and bedding.
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