CN116497494B - Warm-keeping raised yarn and preparation method and device thereof - Google Patents
Warm-keeping raised yarn and preparation method and device thereof Download PDFInfo
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- CN116497494B CN116497494B CN202310789024.9A CN202310789024A CN116497494B CN 116497494 B CN116497494 B CN 116497494B CN 202310789024 A CN202310789024 A CN 202310789024A CN 116497494 B CN116497494 B CN 116497494B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 414
- 238000000034 method Methods 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 18
- 238000009826 distribution Methods 0.000 claims description 17
- 210000002268 wool Anatomy 0.000 claims description 5
- 229920000297 Rayon Polymers 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 229920004933 Terylene® Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000004744 fabric Substances 0.000 description 13
- 238000009987 spinning Methods 0.000 description 10
- 230000009471 action Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000007378 ring spinning Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
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- 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
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/34—Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/02—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by a fluid, e.g. air vortex
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention relates to a thermal raised yarn and a preparation method and a device thereof, wherein in the process that filament multifilament moves at a constant speed and sequentially passes through a fiber conveying channel III and a fiber conveying channel IV, short fibers A are continuously fed into the fiber conveying channel III through a through hole III by using high-pressure airflow I, and short fibers B are continuously fed into the fiber conveying channel IV through the through hole IV by using high-pressure airflow II, so that the thermal raised yarn is obtained; the included angles between the feeding directions of the short fibers A and the short fibers B and the conveying direction of the filament multifilament are 85-90 degrees, the central axis of the through hole III is intersected with the central axis of the fiber conveying channel III, and the central axis of the through hole IV is not intersected with the central axis of the fiber conveying channel IV; the prepared thermal raised yarn mainly comprises filament multifilament and fluff I and fluff II on the surface of the filament multifilament. The method for preparing the raised yarns is simple and has wide application range.
Description
Technical Field
The invention belongs to the technical field of spinning, and relates to a warm-keeping raised yarn and a preparation method and a device thereof.
Background
Pile fabric refers to a fabric having a napped or napped appearance on the surface. Compared with common fabrics, the raised fabrics have the advantages of plump hand feeling, strong third dimension, warm keeping, comfort, elasticity and aesthetic feeling, and are popular with consumers in autumn and winter. Pile fabrics can be largely classified into two kinds of knitted pile fabrics and woven pile fabrics, and the common pile method can be used for directly weaving pile yarns with piles on the surfaces besides electrostatic flocking or cut pile.
The method for spinning the raised yarns with the fluff on the surfaces is generally to adopt a ring spinning mode, and the raw materials are selected from the fluff or chemical fibers with longer fiber length, and the twist coefficient is smaller during spinning, so that more fluff is distributed on the surfaces of the yarns, and the raised effect is achieved. The raised yarns spun by the traditional spinning have higher requirements on raw materials, usually wool or chemical fibers with longer lengths, so the raised yarns have higher cost and high price.
The patent with application number 2022102559471 discloses a raised yarn and a preparation method and application thereof, wherein short fibers are continuously fed into a fiber conveying channel of a filament multifilament by utilizing high-pressure air flow in the uniform motion process of the filament multifilament to prepare the raised yarn, but the average length of the short fibers of the raised yarn exposed out of the surface of the outermost monofilament of the filament multifilament is 3-5 mm, the raised yarn has shorter length and single length consistency, the raised yarn has higher warmth retention property, and the raised yarn is common raised yarn without the style characteristics of fancy yarn.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a thermal raised yarn and a preparation method and a device thereof.
In order to achieve the above purpose, the invention adopts the following scheme:
In the process that filament multifilament moves at a uniform speed and sequentially passes through a fiber conveying channel III and a fiber conveying channel IV, short fibers A are continuously fed into the fiber conveying channel III through a through hole III by utilizing high-pressure airflow I, and short fibers B are continuously fed into the fiber conveying channel IV through the through hole IV by utilizing high-pressure airflow II, so that the thermal-insulation raised yarns are obtained; the short fibers A or B are fed continuously, so that the short fluff on the surface of the raised yarns is distributed continuously;
the number of filaments in the filament multifilament is 20-30;
the pressure of the high-pressure air flow I is 1-2 MPa, the length of the short fiber A is 10-15 mm, the included angle between the feeding direction of the short fiber A and the conveying direction of the filament multifilament is 85-90 degrees, and the central axis of the through hole III is intersected with the central axis of the fiber conveying channel III;
the pressure intensity of the high-pressure air flow II is 0.5-1 MPa, the length of the short fiber B is 32-38 mm, the included angle between the feeding direction of the short fiber B and the conveying direction of the filament multifilament is 85-90 degrees, the central axis of the through hole IV is not intersected with the central axis of the fiber conveying channel IV, and the distance is 1-2 mm.
When the thermal raised yarn is prepared, the short fiber A and the filament multifilament are combined under the action of the high-pressure air flow I, and the short fiber B and the filament multifilament are combined under the action of the high-pressure air flow II, so that the thermal raised yarn is formed. The key technology for realizing the warm-keeping raised yarn comprises the following three points: firstly, the fiber length difference of the short fiber A and the short fiber B is larger, so that the high-low velvet collocation effect can be formed; the angle between the feeding direction of the short fiber and the conveying direction of the filament multifilament and the relative position of the central axis of the through hole III and the central axis of the fiber conveying channel III need to meet certain conditions, so that the combination mode of the short fiber A and the filament multifilament is mainly interpenetration and entanglement, the combination mode of the short fiber B and the filament multifilament is mainly that one end of the short fiber B is wrapped on the surface of the filament multifilament, the surface length of the short fiber A on the heat insulation raised yarn is shorter, the surface length of the short fiber B on the heat insulation raised yarn is longer, the short fiber A and the filament multifilament form the characteristic of matching the short fiber with the filament staple, and the combination fastness and the distribution density of the short fiber A and the filament multifilament can be improved due to the fact that the fiber length of the short fiber A is shorter, the short fiber B is longer, one end of the short fiber B is wrapped on the surface of the filament multifilament, the combination fastness of the short fiber A and the filament multifilament can be improved; thirdly, the pressure intensity of the high-pressure air flow is reasonably controlled, and the bonding fastness of the nap of the napped yarn is ensured.
The key to forming the pile yarn is the action of the air flow, the high pressure air flow into the fiber conveying channel of the filament multifilament yarn being such that two actions are met: firstly, the monofilaments are blown off in the multifilament and entangled with each other under the action of air flow; secondly, the fed short fibers are mutually inserted with the filaments in the process of blowing off and entanglement of the filaments in the multifilament, the short fibers rotate around the central axis of the filament multifilament, and the bonding fastness of the short fibers and the filament multifilament is increased, so that the thermal raised yarns with good bonding fastness can be prepared. Therefore, the feeding direction of the short fibers, namely the angle between the air flow direction and the conveying direction of the filament multifilament, needs to meet certain conditions, the angle is too small, the penetration between the short fibers and the filament multifilament is insufficient, the quality and the bonding fastness of the formed raised yarns are insufficient, the angle is too large, the running direction of the short fibers is opposite to the moving direction of the filament multifilament, and the raising effect is difficult to achieve, so that the feeding direction of the short fibers A and the conveying direction of the filament multifilament are controlled to form an included angle of 85-90 degrees, and the feeding direction of the short fibers B and the conveying direction of the filament multifilament form an included angle of 85-90 degrees; in the same way, the pressure of the high-pressure air flow also needs to meet certain conditions, the pressure is too small, the air flow acting force of the monofilaments and the short fibers in the multifilament is small, the mutual interpenetration and entanglement are insufficient, the bonding fastness of the formed nap yarn nap is insufficient, the quality of the nap yarn is poor, and the nap effect is poor; the pressure is too large, so that energy loss is caused, energy is wasted, and the cost is not saved for enterprises. In addition, the purpose of the invention of controlling the intersection of the central axis of the through hole III and the central axis of the fiber conveying channel III is to ensure that the air flow injected through the through hole III is opposite to the filament multifilament, so that the filaments in the filament multifilament are blown off, and the short fibers A are combined with the filaments in the filament multifilament in an interpenetrating entanglement manner; the invention controls the central axis of the through hole IV and the central axis of the fiber conveying channel IV to be disjoint, the distance is 1-2 mm, and the aim is to rotate the air flow injected into the fiber conveying channel IV, so that the short fiber B is combined with the filament multifilament in a wrapping way.
When the invention is used for preparing the raised yarns, two short fibers with larger fiber length difference are respectively compounded with the filaments, the fiber length of the short fiber A is shorter, the combination mode of the short fiber A and the filament multifilament is mainly interpenetration and entanglement, the length of the short fiber B is longer, and the combination mode of the short fiber B and the filament multifilament is mainly that one end of the short fiber B is wrapped on the surface of the filament multifilament, so that the raised effect with high and low collocation is formed. The invention can solve the problems of shorter fluff length and single length consistency in the prior art, and has two main reasons: when the short fibers with different lengths (or short fibers with larger length difference) are combined with the filament multifilament in the prior art, only a simultaneous combination mode can be adopted, and the short fibers with different lengths are simultaneously combined through the action force of the same air flow, so that the combination fastness of the short fibers with different lengths and the filament multifilament cannot be unified under the action of the action force of the same air flow, and the phenomenon of wool falling is serious; secondly, in the prior art, whether the short fibers are drawn by adopting a roller drawing mode or a carding mode, the fiber flow for changing the short fibers into the single fiber state is required to have more consistent or less different length uniformity, otherwise, the quality of the fiber flow in the single fiber state is difficult to ensure.
As a preferable technical scheme:
according to the preparation method of the thermal napped yarn, the uniform motion speed is 20-40 m/min; the constant speed of the filament multifilament is related to the density of the nap yarn, the uniformity of the nap, the output of the nap yarn and other indexes, and the constant speed is controlled to be 20-40 m/min, so that the problem that the nap quality of the nap yarn is difficult to control due to the fact that the movement speed of the filament multifilament is too high can be avoided, and the problem that the output is low due to the fact that the movement speed of the filament multifilament is too low can be avoided.
According to the preparation method of the thermal napped yarn, the short fibers A are combed noil fibers; the short fiber B is combed cotton fiber, viscose fiber, terylene fiber or wool fiber.
According to the preparation method of the thermal raised yarns, the total feeding quantity of the short fibers A is 60-100 roots/s (namely the feeding quantity per second); the total feeding amount of the short fibers B is 30-50 fibers/s; the feeding quantity of the short fibers can directly influence the density of the nap yarns, so that the total feeding quantity is set, the phenomenon that the nap density of the nap yarns is too small due to the fact that the feeding quantity is small can be avoided, the nap effect is poor, and the phenomenon that the short fibers block channels due to the fact that the feeding quantity is too large can be avoided.
According to the preparation method of the thermal napping yarn, n groups of through holes III are arranged on the fiber conveying channel III at intervals along the length direction of the fiber conveying channel III, n is 4-6, each group of through holes III comprises 5-8 through holes III, the same group of through holes III are uniformly distributed around the central axis of the fiber conveying channel III, and the distance between two adjacent groups of through holes III is 15-20 mm; the reason why the distance between the two adjacent groups of through holes III is set is that in order to make the short fibers A and the filament multifilament more compact and reasonable, when the distance is too small, the short fibers A and the filament multifilament are combined, the short fibers A and the filament multifilament are subjected to larger mutual interference, the combination of part of the short fibers A and the filament multifilament is affected, the down phenomenon is caused, and when the distance is too large, the short fibers A are difficult to uniformly and tightly distribute on the surface of the filament multifilament.
According to the preparation method of the thermal raised yarns, m groups of through holes IV are arranged on the fiber conveying channel IV at intervals along the length direction of the fiber conveying channel IV, m is 4-5, each group of through holes IV comprises 5-8 through holes IV, the same group of through holes IV are uniformly distributed around the central axis of the fiber conveying channel IV, and the distance between two adjacent groups of through holes IV is 25-30 mm; the reason why the distance between the two adjacent groups of through holes IV is set is that in order to make the short fibers B and the filament multifilament more compact and reasonable, when the distance is too small, the short fibers B are combined with the filament multifilament, and are subjected to larger mutual interference, so that the combination of part of the short fibers B and the filament multifilament is affected, and the down phenomenon is caused, and when the distance is too large, the short fibers B are difficult to uniformly and compactly distribute on the surface of the filament multifilament.
The invention also provides a thermal raised yarn prepared by the preparation method of the thermal raised yarn, which mainly comprises filament multifilament and fluff I and fluff II on the surface of the filament multifilament;
fluff I refers to a staple fiber A having one end free and the other end bonded to the filament multifilament yarn by means of interpenetration, entanglement and/or entanglement;
the fluff II is a short fiber B with one end being a free end and the other end being combined with the filament multifilament and the short fiber A by wrapping;
along the length direction of the filament multifilament, the distribution density of fluff I is 90-300 fluff/m; the distribution density of the fluff II is 45-150 fluff/m.
As a preferable technical scheme:
the thermal raised yarn is measured by adopting an image method, namely, the raised yarn is subjected to photographing treatment, the length of the short fiber exposed out of the surface of the outermost monofilament of the multifilament is analyzed, the average value of the short fiber is measured, and the average length of the short fiber A exposed out of the surface of the outermost monofilament of the multifilament is 3-5 mm; short fibers B are exposed to the outermost side of the filament multifilament the average length of the surface of the monofilament is 15-20 mm.
In addition, the invention also provides a device for warming and napping yarns, which comprises a nozzle, a short fiber A conveying device, a short fiber B conveying device, a high-pressure air flow III spraying device, a high-pressure air flow IV spraying device and a filament multifilament conveying device;
The nozzle comprises a block; the block body is internally provided with a cylindrical through hole I, a cylindrical through hole II, a cylindrical barrel I, a cylindrical barrel II, a fiber conveying channel I and a fiber conveying channel II; the central axes of the cylindrical through holes I, the cylindrical through holes II, the cylindrical barrels I and the cylindrical barrels II are parallel to the left-right direction; the cylindrical through hole I is positioned at the left side of the cylindrical through hole II, and the cylindrical through hole I and the cylindrical through hole II are coaxial and are arranged at intervals;
the cylindrical barrel I is positioned in the cylindrical through hole I, the cylindrical barrel I and the cylindrical through hole I are coaxial, the outer diameter of the cylindrical barrel I is smaller than the diameter of the cylindrical through hole I, and the left end and the right end of the cylindrical barrel I are flush and are in sealing connection; the hollow part of the cylinder I is a fiber conveying channel III;
the cylindrical barrel II is positioned in the cylindrical through hole II, the cylindrical barrel II and the cylindrical through hole II are coaxial, the outer diameter of the cylindrical barrel II is smaller than the diameter of the cylindrical through hole II, and the left end and the right end of the cylindrical barrel II are flush and are in sealing connection; the hollow part of the cylinder II is the fiber conveying channel IV;
the cylindrical through hole I is communicated with the fiber conveying channel I, and the connection point of the cylindrical through hole I and the fiber conveying channel I is positioned on the hole wall of the cylindrical through hole I;
the cylindrical through hole II is communicated with the fiber conveying channel II, and the connection point of the cylindrical through hole II and the fiber conveying channel II is positioned on the hole wall of the cylindrical through hole II;
the side wall of the cylinder I is provided with n groups of through holes III, n is 4-6, and each group contains 5-8 through holes III; one end of each through hole III is intersected with the outer wall of the cylindrical barrel I, the intersection point is marked as a point p, the other end of each through hole III is intersected with the inner wall of the cylindrical barrel I, the intersection point is marked as a point q, and the point p is positioned on the left side or the same side of the point q along the length direction of the cylindrical barrel I; the 1 st to n th groups of through holes III are arranged at intervals along the length direction of the cylindrical drum I; the included angle between the central axis of each through hole III and the left-right direction is 85-90 degrees, and the central axis of each through hole III is intersected with the central axis of the cylindrical barrel I;
M groups of through holes IV are formed in the side wall of the cylinder II, m is 4-5, and each group of through holes IV contains 5-8 through holes; one end of each through hole IV is intersected with the outer wall of the cylinder II, the intersection point is marked as a point f, the other end of each through hole IV is intersected with the inner wall of the cylinder II, the intersection point is marked as a point g, and the point f is positioned on the left side or the same side of the point g along the length direction of the cylinder II; 1~m groups of through holes IV are arranged at intervals along the length direction of the cylindrical drum II; the included angle between the central axis of each through hole IV and the left-right direction is 85-90 degrees, the central axis of each through hole IV is not intersected with the central axis of the cylindrical barrel II, and the interval is 1-2 mm;
each group of through holes III are uniformly distributed around the circumference of the central axis of the cylinder I, namely, the through holes III are uniformly distributed in a radial shape; each group of through holes IV are uniformly distributed around the circumference of the central axis of the cylinder II, namely, the through holes IV are uniformly distributed in a radial shape;
n groups of through holes III are all round through holes, and the diameters of the n groups of through holes III are all 1-2 mm; the distance between the points q corresponding to two adjacent groups of through holes III in the 1 st-n th group of through holes III is 15-20 mm, the reason that the distance between the two groups of through holes III is set is that short fibers and filaments are more compact and reasonable, when the distance is too small, the short fibers are combined with the filaments, the short fibers are subjected to larger mutual interference, the combination of partial short fibers and filament multifilaments can be influenced, the fleece falling phenomenon is caused, and when the distance is too large, the short fibers are difficult to uniformly and tightly distribute on the surfaces of the filament multifilaments; the minimum distance between the point q corresponding to the through hole III and the two ends of the cylindrical drum I is 10-15 mm, and the reason that the through hole III is at a certain distance from the two ends of the cylindrical drum I is that the fiber is prevented from blocking the cylindrical drum I; the m groups of through holes IV are all round through holes, and the diameters of the m groups of through holes IV are all 1-2 mm; the distance between the points g corresponding to two adjacent groups of through holes IV in the 1~m group of through holes IV is 25-30 mm, the reason that the distance between the two groups of through holes IV is set is that in order to enable the short fibers and the filaments to be more compact and reasonable, when the distance is too small, the short fibers are combined with the filaments, the short fibers are subjected to larger mutual interference, the combination of partial short fibers and the filaments can be influenced, the fleece falling phenomenon is caused, and when the distance is too large, the short fibers are difficult to uniformly and tightly distribute on the surfaces of the filaments; the minimum distance between the point g corresponding to the through hole IV and the two ends of the cylindrical barrel II is 10-15 mm, and the reason that the through hole IV is at a certain distance from the two ends of the cylindrical barrel II is that the cylindrical barrel II is prevented from being blocked by fibers;
The short fiber A conveying device is communicated with the fiber conveying channel I; the short fiber B conveying device is communicated with a fiber conveying channel II;
the high-pressure air flow III jet device is communicated with the fiber conveying channel I and is used for providing high-pressure air flow III, and the pressure intensity of the high-pressure air flow III and the size of the nozzle are matched with each other so that the pressure intensity of the high-pressure air flow I entering the through hole III is 1-2 MPa;
the high-pressure airflow IV injection device is communicated with the fiber conveying channel II and is used for providing high-pressure airflow IV, and the pressure intensity of the high-pressure airflow IV and the size of the nozzle are matched with each other so that the pressure intensity of the high-pressure airflow II entering the through hole IV is 0.5-1 MPa;
the filament multifilament conveying device is used for conveying the filament multifilament into the fiber conveying channel III and the fiber conveying channel IV in sequence.
As a preferable technical scheme:
according to the device, the radius of the cylindrical through hole I is 20-35 mm, and the radius of the cylindrical through hole II is 65-80 mm; the radius parameters of the cylindrical through holes I and II are related to the short fibers A and B which are correspondingly fed, the sizes of the two are required to ensure that the fibers can be smoothly transferred in all through holes and all parts, and the size is too small, so that the transfer of the fibers is not facilitated, the size is too large, and the installation is not facilitated.
According to the device, the distance between the cylindrical through hole I and the cylindrical through hole II is 10-20 mm; the reason for setting the interval between the cylindrical through hole I and the cylindrical through hole II to be 10-20 mm is that when the interval between the cylindrical through hole I and the cylindrical through hole II is too small, the air flow between the cylindrical through hole I and the cylindrical through hole II can generate mutual interference to influence the napping effect, and when the interval between the cylindrical through hole I and the cylindrical through hole II is too large, the whole nozzle is too large in size and is unfavorable for installation and use.
According to the device, the inner diameter of the cylindrical barrel I is 2-4 mm, the wall thickness is 10-25 mm, and the length is 50-100 mm; the inner diameter of the cylinder II is 8-10 mm, the wall thickness is 35-40 mm, and the length is 200-300 mm; the size parameters of the cylinder I and the cylinder II are related to the short fibers A and the short fibers B which are correspondingly fed, the sizes of the short fibers A and the short fibers B need to ensure that the fibers can be smoothly transferred in all through holes and all parts, and the size is too small, so that the transfer of the fibers is not facilitated, the size is too large, and the installation is not facilitated.
In the device, the fiber conveying channel I is positioned above the cylindrical through hole I, and the included angle of the central axis of the fiber conveying channel I and the central axis of the cylindrical through hole I is 90 degrees; the fiber conveying channel II is positioned above the cylindrical through hole II, and the included angle of the central axis of the fiber conveying channel II and the central axis of the cylindrical through hole II is 90 degrees; the fiber conveying channel I and the fiber conveying channel II are of tapered funnel-shaped structures, the sizes of the fiber conveying channels are gradually decreased from top to bottom, and the reason that the fiber conveying channels are designed is that the speed of air flow in the fiber conveying channels can be accelerated, so that the fiber conveying channels are beneficial to improving the fiber speed.
According to the device, the length of the fiber conveying channel I is 10-20 mm, and the length of the fiber conveying channel II is 35-45 mm; the cross section of the fiber conveying channel I or the fiber conveying channel II is circular, the diameter of the upper end is 5-8 mm, and the diameter of the lower end is 2-3 mm; the size parameters of the fiber conveying channel I and the fiber conveying channel II are related to the short fibers A and the short fibers B which are correspondingly fed, the sizes of the short fibers A and the short fibers B need to ensure that the fibers can be smoothly transferred in all through holes and all parts, and when the sizes are too small, the fiber transfer is not facilitated, and the size is too large, and the installation is not facilitated.
The device is characterized in that the block body is of a concave structure and consists of a cuboid I positioned on the left side, a connecting part positioned in the middle and a cuboid II positioned on the right side;
the cylindrical barrel I and the cylindrical through hole I are both positioned in the cuboid I, the left ends of the cylindrical barrel I and the cylindrical through hole I are in sealing connection through the annular sealing ring I and are flush with the left side face of the cuboid I, and the right ends of the cylindrical barrel I and the cylindrical through hole I are in sealing connection through the annular sealing ring I and are flush with the right side face of the cuboid I;
cylinder section of thick bamboo II and cylinder through-hole II all are located cuboid II, and cylinder section of thick bamboo II and cylinder through-hole II's left end is through ring seal I II sealing connection and flushes with cuboid II's left surface, and cylinder section of thick bamboo II and cylinder through-hole II's right-hand member is through ring seal I V sealing connection and flushes with cuboid II's right flank.
In the device, the block is made of metal.
The mechanism of the invention is as follows:
the filaments fed from the yarn channel are mutually transferred and entangled, and after the short fibers are injected into the yarn channel from the through holes III and IV, the short fibers have a certain initial speed and are transferred together with the filaments in the multifilament under the action of air flow, and during the transfer, part of the short fibers are entangled with the filaments in the multifilament, part of the short fibers are wrapped on the surface of the multifilament, one end of the short fibers are entangled with and inserted into the filaments in the multifilament, and the other end of the short fibers are exposed out of the surface of the multifilament, so that a raised yarn is formed. The mechanism of the present invention is different from the mechanism of the prior art, the prior art napping is napping on the basis of the fabric, such as electrostatic flocking, short fibers are planted on the fabric by means of technical treatment to form napped fabric, and the cut napping is to subject the fabric to cutting napping to obtain napped fabric.
Advantageous effects
(1) According to the thermal raised yarn, the surface of the thermal raised yarn has the characteristic of high-low collocation of short piles and long piles, and the surface of the manufactured fabric can form the surface characteristic similar to animal fur, so that the thermal raised yarn has good thermal insulation performance;
(2) The preparation method of the warm-keeping raised yarn can directly spin the filament multifilament and the short fiber into the raised yarn, and is simple and wide in application range.
Drawings
FIG. 1 is a schematic view of an apparatus for producing a thermal napped yarn according to the present invention;
FIG. 2 is a schematic view of the overall structure of the nozzle of the present invention;
FIG. 3 is a schematic cross-sectional view of the nozzle of the present invention along the central axis of the cylindrical through hole I;
FIG. 4 is a schematic left-view structure of a rectangular parallelepiped I part according to the present invention;
FIG. 5 is a schematic right-view structure of a rectangular parallelepiped II part according to the present invention;
FIG. 6 is a schematic cross-sectional view of the cylinder I of the present invention along its central axis;
FIG. 7 is a schematic perspective view of a cylinder I according to the present invention;
FIG. 8 is a schematic perspective view of a cylinder II according to the present invention;
the device comprises a 1-cuboid I, a 2-cuboid II, a 3-connecting part, a 4-cylinder I, a 5-cylinder II, a 6-fiber conveying channel I, a 7-fiber conveying channel II, an 8-cylinder through hole I, a 9-cylinder through hole II, a 10-through hole III, a 11-through hole IV, a 12-short fiber A conveying device and a 13-short fiber B conveying device.
Detailed Description
The application is further described below in conjunction with the detailed description. It is to be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. Furthermore, it should be understood that various changes and modifications can be made by one skilled in the art after reading the teachings of the present application, and such equivalents are intended to fall within the scope of the application as defined in the appended claims.
The apparatus for preparing a thermal napped yarn in the following examples, as shown in fig. 1, includes a nozzle, a short fiber a transporting means 12, a short fiber B transporting means 13, a high pressure air stream III injecting means, a high pressure air stream IV injecting means, and a filament multifilament transporting means;
as shown in fig. 2, the nozzle comprises a block body, a cylindrical through hole I8, a cylindrical through hole II 9, a cylindrical barrel I4, a cylindrical barrel II 5, a fiber conveying channel I6 and a fiber conveying channel II 7;
the block body is of a concave structure made of metal and consists of a cuboid I1 positioned on the left side, a connecting part 3 positioned in the middle and a cuboid II 2 positioned on the right side;
the central axes of the cylindrical through holes I8, the cylindrical through holes II 9, the cylindrical barrels I4 and the cylindrical barrels II 5 are parallel to the left-right direction; the cylindrical through hole I8 is positioned at the left side of the cylindrical through hole II 9, and the cylindrical through hole I and the cylindrical through hole II are coaxial and have a distance of 10-20 mm;
As shown in fig. 2-4 and 6-7, the inner diameter of the cylindrical barrel I4 is 2-4 mm, the wall thickness is 10-25 mm, and the length is 50-100 mm; the side wall of the cylinder I4 is provided with n groups of circular through holes III 10 with diameters of 1-2 mm, n is 4-6, and in each group, the number of the through holes III 10 is 5-8 and is uniformly distributed around the circumference of the central axis of the cylinder I4; one end of each through hole III 10 is intersected with the outer wall of the cylindrical barrel I4, the intersection point is marked as a point p, the other end is intersected with the inner wall of the cylindrical barrel I4, the intersection point is marked as a point q, and the point p is positioned on the left side or the same side of the point q along the length direction of the cylindrical barrel I4; the 1 st to n th groups of through holes III 10 are arranged at intervals along the length direction of the cylindrical barrel I4, the distance between the point q corresponding to each two adjacent groups of through holes III 10 is 15-20 mm, and the minimum distance between the point q corresponding to each through hole III 10 and the two ends of the cylindrical barrel I4 is 10-15 mm; the included angle between the central axis of each through hole III 10 and the left-right direction is 85-90 degrees, and the central axis of each through hole III 10 is intersected with the central axis of the cylinder I4;
the cylindrical barrel I4 is positioned in the cylindrical through hole I8, the cylindrical barrel I4 and the cylindrical through hole I are coaxial, the outer diameter of the cylindrical barrel I4 is smaller than the diameter of the cylindrical through hole I8, and the radius of the cylindrical through hole I8 is 20-35 mm; the cylindrical barrel I4 and the cylindrical through hole I8 are positioned in the cuboid I1, the left ends of the cylindrical barrel I4 and the cylindrical through hole I8 are in sealing connection through the annular sealing ring I and are flush with the left side surface of the cuboid I1, and the right ends of the cylindrical barrel I4 and the cylindrical through hole I8 are in sealing connection through the annular sealing ring II and are flush with the right side surface of the cuboid I1;
As shown in fig. 2, 3, 5 and 8, the inner diameter of the cylinder II 5 is 8-10 mm, the wall thickness is 35-40 mm, and the length is 200-300 mm; the side wall of the cylinder II 5 is provided with m groups of circular through holes IV 11 with diameters of 1-2 mm, m is 4-5, and in each group, the number of the through holes IV 11 is 5-8 and is uniformly distributed around the circumference of the central axis of the cylinder II 5; one end of each through hole IV 11 is intersected with the outer wall of the cylinder II 5, the intersection point is marked as a point f, the other end of each through hole is intersected with the inner wall of the cylinder II 5, the intersection point is marked as a point g, and the point f is positioned on the left side or the same side of the point g along the length direction of the cylinder II 5; the 1~m groups of through holes IV 11 are arranged at intervals along the length direction of the cylindrical barrel II 5, the distance between the points g corresponding to the two adjacent groups of through holes IV 11 is 25-30 mm, and the minimum distance between the points g corresponding to the through holes IV 11 and the two ends of the cylindrical barrel II 5 is 10-15 mm; the included angle between the central axis of each through hole IV 11 and the left-right direction is 85-90 degrees, the central axis of each through hole IV 11 is not intersected with the central axis of the cylindrical barrel II 5, and the interval is 1-2 mm;
the cylindrical barrel II 5 is positioned in the cylindrical through hole II 9, the cylindrical barrel II and the cylindrical through hole II are coaxial, the outer diameter of the cylindrical barrel II 5 is smaller than the diameter of the cylindrical through hole II 9, and the radius of the cylindrical through hole II 9 is 65-80 mm; the cylindrical barrel II 5 and the cylindrical through hole II 9 are positioned in the cuboid II 2, the left ends of the cylindrical barrel II 5 and the cylindrical through hole II 9 are in sealing connection through the annular sealing ring III and are flush with the left side surface of the cuboid II 2, and the right ends of the cylindrical barrel II 5 and the cylindrical through hole II 9 are in sealing connection through the annular sealing ring IV and are flush with the right side surface of the cuboid II 2;
As shown in fig. 2 and 3, the fiber conveying channel I6 and the fiber conveying channel II 7 are tapered funnel structures, and have circular cross sections; the length of the fiber conveying channel I6 is 10-20 mm, the diameter of the upper end is 5-8 mm, and the diameter of the lower end is 2-3 mm; the length of the fiber conveying channel II 7 is 35-45 mm, the diameter of the upper end is 5-8 mm, and the diameter of the lower end is 2-3 mm;
the fiber conveying channel I6 is positioned in the cuboid I1 and is communicated with the cylindrical through hole I8, and the connection point of the fiber conveying channel I6 and the cylindrical through hole I8 is positioned on the hole wall of the cylindrical through hole I8; the fiber conveying channel I6 is positioned above the cylindrical through hole I8, and the included angle of the central axis of the fiber conveying channel I6 and the central axis of the cylindrical through hole I is 90 degrees;
the fiber conveying channel II 7 is positioned in the cuboid II 2 and is communicated with the cylindrical through hole II 9, and the connection point of the fiber conveying channel II and the cylindrical through hole II is positioned on the wall of the cylindrical through hole II 9; the fiber conveying channel II 7 is positioned above the cylindrical through hole II 9, and the included angle of the central axis of the fiber conveying channel II and the central axis of the cylindrical through hole II is 90 degrees;
the short fiber A conveying device 12 is communicated with the fiber conveying channel I6; the short fiber B conveying device 13 is communicated with the fiber conveying channel II 7;
the high-pressure air flow III jet device is communicated with the fiber conveying channel I6 and is used for providing high-pressure air flow III, and the pressure intensity of the high-pressure air flow III and the size of the nozzle are matched with each other so that the pressure intensity of the high-pressure air flow I entering the through hole III 10 is 1-2 MPa;
the high-pressure air flow IV injection device is communicated with the fiber conveying channel II 7 and is used for providing high-pressure air flow IV, and the pressure intensity of the high-pressure air flow IV and the size of the nozzle are matched with each other so that the pressure intensity of the high-pressure air flow II entering the through hole IV 11 is 0.5-1 MPa;
The filament multifilament conveying device is used for conveying the filament multifilament into a fiber conveying channel III (namely the hollow part of the cylinder I) and a fiber conveying channel IV (namely the hollow part of the cylinder II) in sequence.
The invention is further described in detail with specific data, and parameters affecting important indicators related to the final manufactured thermal raised yarns are given in the following examples; the other parameters not given are not particularly limited since they have little influence.
Example 1
The method for preparing the thermal raised yarns by using the device for preparing the thermal raised yarns comprises the steps of continuously feeding short fibers A into a fiber conveying channel III through a through hole III by using high-pressure airflow I and continuously feeding short fibers B into the fiber conveying channel IV through the through hole IV by using high-pressure airflow II in the process that filament multifilament moves at a uniform speed and sequentially passes through the fiber conveying channel III and the fiber conveying channel IV, so that the thermal raised yarns are obtained;
wherein the spinning parameters include: 4 groups of feeding points (namely through holes III) are arranged on the fiber conveying channel III, the distance between two adjacent groups of short fiber feeding points (namely the distance between the points q corresponding to the two adjacent groups of through holes III) is 15mm, and each group contains 5 short fiber feeding points; 4 groups of feeding points (namely through holes IV) are arranged on the fiber conveying channel IV, the distance between two adjacent groups of short fiber feeding points (namely the distance between the points g corresponding to the two adjacent groups of through holes IV) is 25mm, and each group of short fiber feeding points comprises 5 short fiber feeding points; the number of filaments in the filament multifilament is 20; the uniform motion speed is 40m/min; the short fibers A are combed noil fibers with the average length of 10mm, the total feeding quantity is 60 pieces/s, the feeding direction and the conveying direction of the filament multifilament form an included angle of 90 degrees, and the central axis of the through hole III is intersected with the central axis of the fiber conveying channel III; the short fibers B are combed cotton fibers with the average length of 32mm, the total feeding quantity is 30 pieces/s, the feeding direction and the conveying direction of the filament multifilament form an included angle of 90 degrees, the central axis of the through hole IV is not intersected with the central axis of the fiber conveying channel IV, and the interval is 1mm; the pressure of the high-pressure air flow I is 1MPa, and the pressure of the high-pressure air flow II is 0.5MPa.
The finally prepared thermal raised yarn mainly comprises filament multifilament and fluff I and fluff II which are positioned on the surface of the filament multifilament, wherein one end of the fluff I is a free end, the other end of the fluff I is a short fiber A combined with the filament multifilament in an interpenetrating, wrapping and/or intertwining mode, and the fluff II is a short fiber B with one end being a free end and the other end combined with the filament multifilament and the short fiber A in a wrapping mode; along the length direction of the filament multifilament, the distribution density of fluff I is 90 pieces/m; the distribution density of fluff II is 45 roots/m; the average length of the surface of the filament exposed out of the filament multifilament of the short fiber A is 3mm; the average length of the exposed filament surface of the staple fibers B on the outermost side of the multifilament yarn was 15mm.
Example 2
The method for preparing the thermal raised yarns by using the device for preparing the thermal raised yarns comprises the steps of continuously feeding short fibers A into a fiber conveying channel III through a through hole III by using high-pressure airflow I and continuously feeding short fibers B into the fiber conveying channel IV through the through hole IV by using high-pressure airflow II in the process that filament multifilament moves at a uniform speed and sequentially passes through the fiber conveying channel III and the fiber conveying channel IV, so that the thermal raised yarns are obtained;
wherein the spinning parameters include: 5 groups of feeding points (namely through holes III) are arranged on the fiber conveying channel III, the distance between two adjacent groups of short fiber feeding points (namely the distance between the points q corresponding to the two adjacent groups of through holes III) is 18mm, and each group of short fiber feeding points comprises 8 short fiber feeding points; the fiber conveying channel IV is provided with 5 groups of feeding points (namely through holes IV), the distance between two adjacent groups of short fiber feeding points (namely the distance between the points g corresponding to the two adjacent groups of through holes IV) is 30mm, and each group of short fiber feeding points comprises 8 short fiber feeding points; the number of filaments in the filament multifilament is 30; the uniform motion speed is 20m/min; the short fibers A are combed noil fibers with the average length of 13mm, the total feeding quantity is 100 pieces/s, the feeding direction and the conveying direction of the filament multifilament form an included angle of 88 degrees, and the central axis of the through hole III is intersected with the central axis of the fiber conveying channel III; the short fibers B are viscose fibers with the average length of 38mm, the total feeding quantity is 50 fibers/s, the feeding direction and the conveying direction of the filament multifilament form an included angle of 88 degrees, the central axis of the through hole IV is not intersected with the central axis of the fiber conveying channel IV, and the interval is 2mm; the pressure of the high-pressure air flow I is 2MPa, and the pressure of the high-pressure air flow II is 1MPa.
The finally prepared thermal raised yarn mainly comprises filament multifilament and fluff I and fluff II which are positioned on the surface of the filament multifilament, wherein one end of the fluff I is a free end, the other end of the fluff I is a short fiber A combined with the filament multifilament in an interpenetrating, wrapping and/or intertwining mode, and the fluff II is a short fiber B with one end being a free end and the other end combined with the filament multifilament and the short fiber A in a wrapping mode; along the length direction of the filament multifilament, the distribution density of fluff I is 300 fluff/m; the distribution density of fluff II is 150 roots/m; the average length of the surface of the filament exposed out of the filament multifilament of the short fiber A is 5mm; the average length of the exposed filament surface of the staple fibers B on the outermost side of the multifilament yarn was 20mm.
Example 3
The method for preparing the thermal raised yarns by using the device for preparing the thermal raised yarns comprises the steps of continuously feeding short fibers A into a fiber conveying channel III through a through hole III by using high-pressure airflow I and continuously feeding short fibers B into the fiber conveying channel IV through the through hole IV by using high-pressure airflow II in the process that filament multifilament moves at a uniform speed and sequentially passes through the fiber conveying channel III and the fiber conveying channel IV, so that the thermal raised yarns are obtained;
wherein the spinning parameters include: 4 groups of feeding points (namely through holes III) are arranged on the fiber conveying channel III, the distance between two adjacent groups of short fiber feeding points (namely the distance between the points q corresponding to the two adjacent groups of through holes III) is 16mm, and each group of short fiber feeding points comprises 6 short fiber feeding points; 4 groups of feeding points (namely through holes IV) are arranged on the fiber conveying channel IV, the distance between two adjacent groups of short fiber feeding points (namely the distance between the points g corresponding to the two adjacent groups of through holes IV) is 28mm, and each group of short fiber feeding points comprises 5 short fiber feeding points; the number of filaments in the filament multifilament is 25; the uniform motion speed is 30m/min; the short fibers A are combed noil fibers with the average length of 12mm, the total feeding quantity is 80 pieces/s, the feeding direction and the conveying direction of the filament multifilament form an included angle of 85 degrees, and the central axis of the through hole III is intersected with the central axis of the fiber conveying channel III; the short fibers B are polyester fibers with the average length of 35mm, the total feeding quantity is 40 fibers/s, the feeding direction and the conveying direction of the filament multifilament form an included angle of 87 degrees, the central axis of the through hole IV is not intersected with the central axis of the fiber conveying channel IV, and the interval is 1.5mm; the pressure of the high-pressure air flow I is 1MPa, and the pressure of the high-pressure air flow II is 0.8MPa.
The finally prepared thermal raised yarn mainly comprises filament multifilament and fluff I and fluff II which are positioned on the surface of the filament multifilament, wherein one end of the fluff I is a free end, the other end of the fluff I is a short fiber A combined with the filament multifilament in an interpenetrating, wrapping and/or intertwining mode, and the fluff II is a short fiber B with one end being a free end and the other end combined with the filament multifilament and the short fiber A in a wrapping mode; along the length direction of the filament multifilament, the distribution density of fluff I is 160 fluff/m; the distribution density of fluff II is 80 roots/m; the average length of the surface of the filament exposed out of the filament multifilament of the short fiber A is 3.5mm; the average length of the exposed filament surface of the staple fibers B on the outermost side of the multifilament yarn was 18mm.
Example 4
The method for preparing the thermal raised yarns by using the device for preparing the thermal raised yarns comprises the steps of continuously feeding short fibers A into a fiber conveying channel III through a through hole III by using high-pressure airflow I and continuously feeding short fibers B into the fiber conveying channel IV through the through hole IV by using high-pressure airflow II in the process that filament multifilament moves at a uniform speed and sequentially passes through the fiber conveying channel III and the fiber conveying channel IV, so that the thermal raised yarns are obtained;
wherein the spinning parameters include: 5 groups of feeding points (namely through holes III) are arranged on the fiber conveying channel III, the distance between two adjacent groups of short fiber feeding points (namely the distance between the points q corresponding to the two adjacent groups of through holes III) is 20mm, and each group of short fiber feeding points comprises 7 short fiber feeding points; the fiber conveying channel IV is provided with 5 groups of feeding points (namely through holes IV), the distance between two adjacent groups of short fiber feeding points (namely the distance between the points g corresponding to the two adjacent groups of through holes IV) is 30mm, and each group of short fiber feeding points comprises 6 short fiber feeding points; the number of filaments in the filament multifilament is 26; the uniform motion speed is 40m/min; the short fibers A are combed noil fibers with the average length of 15mm, the total feeding quantity is 90 pieces/s, the feeding direction and the conveying direction of the filament multifilament form an included angle of 90 degrees, and the central axis of the through hole III is intersected with the central axis of the fiber conveying channel III; the short fibers B are wool fibers with the average length of 36mm, the total feeding quantity is 45 pieces/s, the feeding direction and the conveying direction of the filament multifilament form an included angle of 85 degrees, the central axis of the through hole IV is not intersected with the central axis of the fiber conveying channel IV, and the interval is 1.3mm; the pressure of the high-pressure air flow I is 1.8MPa, and the pressure of the high-pressure air flow II is 0.9MPa.
The finally prepared thermal raised yarn mainly comprises filament multifilament and fluff I and fluff II which are positioned on the surface of the filament multifilament, wherein one end of the fluff I is a free end, the other end of the fluff I is a short fiber A combined with the filament multifilament in an interpenetrating, wrapping and/or intertwining mode, and the fluff II is a short fiber B with one end being a free end and the other end combined with the filament multifilament and the short fiber A in a wrapping mode; along the length direction of the filament multifilament, the distribution density of fluff I is 135 fluff/m; the distribution density of fluff II is 67 roots/m; the average length of the surface of the filament exposed out of the filament multifilament of the short fiber A is 5mm; the average length of the exposed filament surface of the staple fibers B on the outermost side of the multifilament yarn was 19mm.
Example 5
The method for preparing the thermal raised yarns by using the device for preparing the thermal raised yarns comprises the steps of continuously feeding short fibers A into a fiber conveying channel III through a through hole III by using high-pressure airflow I and continuously feeding short fibers B into the fiber conveying channel IV through the through hole IV by using high-pressure airflow II in the process that filament multifilament moves at a uniform speed and sequentially passes through the fiber conveying channel III and the fiber conveying channel IV, so that the thermal raised yarns are obtained;
wherein the spinning parameters include: 4 groups of feeding points (namely through holes III) are arranged on the fiber conveying channel III, the distance between two adjacent groups of short fiber feeding points (namely the distance between the points q corresponding to the two adjacent groups of through holes III) is 15mm, and each group contains 5 short fiber feeding points; 4 groups of feeding points (namely through holes IV) are arranged on the fiber conveying channel IV, the distance between two adjacent groups of short fiber feeding points (namely the distance between the points g corresponding to the two adjacent groups of through holes IV) is 26mm, and each group of short fiber feeding points comprises 7 short fiber feeding points; the number of filaments in the filament multifilament is 30; the uniform motion speed is 35m/min; the short fibers A are combed noil fibers with the average length of 10mm, the total feeding quantity is 70 pieces/s, the feeding direction and the conveying direction of the filament multifilament form an included angle of 86 degrees, and the central axis of the through hole III is intersected with the central axis of the fiber conveying channel III; the short fibers B are polyester fibers with the average length of 33mm, the total feeding quantity is 30 pieces/s, the feeding direction and the conveying direction of the filament multifilament form an included angle of 87 degrees, the central axis of the through hole IV is not intersected with the central axis of the fiber conveying channel IV, and the interval is 1.8mm; the pressure of the high-pressure air flow I is 1.2MPa, and the pressure of the high-pressure air flow II is 0.6MPa.
The finally prepared thermal raised yarn mainly comprises filament multifilament and fluff I and fluff II which are positioned on the surface of the filament multifilament, wherein one end of the fluff I is a free end, the other end of the fluff I is a short fiber A combined with the filament multifilament in an interpenetrating, wrapping and/or intertwining mode, and the fluff II is a short fiber B with one end being a free end and the other end combined with the filament multifilament and the short fiber A in a wrapping mode; along the length direction of the filament multifilament, the distribution density of fluff I is 120 fluff/m; the distribution density of fluff II is 51 roots/m; the average length of the surface of the filament exposed out of the filament multifilament of the short fiber A is 3mm; the average length of the exposed filament surface of the staple fibers B on the outermost side of the multifilament yarn was 16mm.
Example 6
The method for preparing the thermal raised yarns by using the device for preparing the thermal raised yarns comprises the steps of continuously feeding short fibers A into a fiber conveying channel III through a through hole III by using high-pressure airflow I and continuously feeding short fibers B into the fiber conveying channel IV through the through hole IV by using high-pressure airflow II in the process that filament multifilament moves at a uniform speed and sequentially passes through the fiber conveying channel III and the fiber conveying channel IV, so that the thermal raised yarns are obtained;
wherein the spinning parameters include: 5 groups of feeding points (namely through holes III) are arranged on the fiber conveying channel III, the distance between two adjacent groups of short fiber feeding points (namely the distance between the points q corresponding to the two adjacent groups of through holes III) is 17mm, and each group of short fiber feeding points comprises 8 short fiber feeding points; the fiber conveying channel IV is provided with 5 groups of feeding points (namely through holes IV), the distance between two adjacent groups of short fiber feeding points (namely the distance between the points g corresponding to the two adjacent groups of through holes IV) is 28mm, and each group of short fiber feeding points comprises 8 short fiber feeding points; the number of filaments in the filament multifilament is 30; the uniform motion speed is 25m/min; the short fibers A are combed noil fibers with the average length of 14mm, the total feeding quantity is 60 pieces/s, the feeding direction and the conveying direction of the filament multifilament form an included angle of 87 degrees, and the central axis of the through hole III is intersected with the central axis of the fiber conveying channel III; the short fibers B are viscose fibers with the average length of 34mm, the total feeding quantity is 35 pieces/s, the feeding direction and the conveying direction of the filament multifilament form an included angle of 86 degrees, the central axis of the through hole IV is not intersected with the central axis of the fiber conveying channel IV, and the interval is 1.1mm; the pressure of the high-pressure air flow I is 1.5MPa, and the pressure of the high-pressure air flow II is 0.7MPa.
The finally prepared thermal raised yarn mainly comprises filament multifilament and fluff I and fluff II which are positioned on the surface of the filament multifilament, wherein one end of the fluff I is a free end, the other end of the fluff I is a short fiber A combined with the filament multifilament in an interpenetrating, wrapping and/or intertwining mode, and the fluff II is a short fiber B with one end being a free end and the other end combined with the filament multifilament and the short fiber A in a wrapping mode; along the length direction of the filament multifilament, the distribution density of fluff I is 144 pieces/m; the distribution density of fluff II is 84 roots/m; the average length of the surface of the filament exposed out of the filament multifilament of the short fiber A is 4mm; the average length of the exposed filament surface of the staple fibers B on the outermost side of the multifilament yarn was 17mm.
Claims (8)
1. A preparation method of a thermal raised yarn is characterized in that in the process that filament multifilament moves at a constant speed and sequentially passes through a fiber conveying channel III and a fiber conveying channel IV, short fibers A are continuously fed into the fiber conveying channel III through a through hole III by using high-pressure airflow I, and short fibers B are continuously fed into the fiber conveying channel IV through the through hole IV by using high-pressure airflow II, so that the thermal raised yarn is obtained;
the fiber conveying channel III is provided with n groups of through holes III which are arranged at intervals along the length direction of the fiber conveying channel III, n is 4-6, each group of through holes III comprises 5-8 through holes III, the same group of through holes III are uniformly distributed around the central axis of the fiber conveying channel III, and the distance between two adjacent groups of through holes III is 15-20 mm;
The fiber conveying channel IV is provided with m groups of through holes IV which are arranged at intervals along the length direction of the fiber conveying channel IV, wherein m is 4-5, each group of through holes IV comprises 5-8 through holes IV, the through holes IV of the same group are uniformly distributed around the central axis of the fiber conveying channel IV, and the distance between two adjacent groups of through holes IV is 25-30 mm;
the number of filaments in the filament multifilament is 20-30;
the pressure of the high-pressure air flow I is 1-2 MPa, the length of the short fiber A is 10-15 mm, the included angle between the feeding direction of the short fiber A and the conveying direction of the filament multifilament is 85-90 degrees, and the central axis of the through hole III is intersected with the central axis of the fiber conveying channel III;
the pressure intensity of the high-pressure air flow II is 0.5-1 MPa, the length of the short fiber B is 32-38 mm, the included angle between the feeding direction of the short fiber B and the conveying direction of the filament multifilament is 85-90 degrees, the central axis of the through hole IV is not intersected with the central axis of the fiber conveying channel IV, and the distance is 1-2 mm.
2. The method for preparing the thermal raised yarns according to claim 1, wherein the uniform motion speed is 20-40 m/min.
3. The method for producing a thermal napped yarn according to claim 1, wherein the staple fiber a is a combed noil fiber; the short fiber B is combed cotton fiber, viscose fiber, terylene fiber or wool fiber.
4. The method for preparing the thermal raised yarns according to claim 1, wherein the total feeding amount of the short fibers A is 60-100 pieces/s; the total feeding amount of the short fibers B is 30-50 fibers/s.
5. The thermal raised yarn prepared by the preparation method of the thermal raised yarn according to any one of claims 1 to 4, which is characterized by mainly comprising filament multifilament and fluff I and fluff II on the surface of the filament multifilament;
fluff I refers to a staple fiber A having one end free and the other end bonded to the filament multifilament yarn by means of interpenetration, entanglement and/or entanglement;
the fluff II is a short fiber B with one end being a free end and the other end being combined with the filament multifilament and the short fiber A by wrapping;
along the length direction of the filament multifilament, the distribution density of fluff I is 90-300 fluff/m; the distribution density of the fluff II is 45-150 fluff/m.
6. The thermal napped yarn of claim 5, wherein, the average length of the surface of the filament yarn exposed out of the filament yarn multifilament of the short fiber A is 3-5 mm; short fibers B are exposed to the outermost side of the filament multifilament the average length of the surface of the monofilament is 15-20 mm.
7. A device for producing the thermal napped yarn according to claim 5 or 6, comprising a nozzle, a staple fiber a conveying device, a staple fiber B conveying device, a high pressure air stream III spraying device, a high pressure air stream IV spraying device, and a filament multifilament conveying device;
The nozzle comprises a block; the block body is internally provided with a cylindrical through hole I (8), a cylindrical through hole II (9), a cylindrical barrel I (4), a cylindrical barrel II (5), a fiber conveying channel I (6) and a fiber conveying channel II (7); the central axes of the cylindrical through holes I (8), the cylindrical through holes II (9), the cylindrical barrels I (4) and the cylindrical barrels II (5) are parallel to the left-right direction; the cylindrical through hole I (8) is positioned at the left side of the cylindrical through hole II (9), and the cylindrical through hole I and the cylindrical through hole II are coaxially arranged at intervals;
the cylindrical barrel I (4) is positioned in the cylindrical through hole I (8), the cylindrical barrel I and the cylindrical through hole I are coaxial, the outer diameter of the cylindrical barrel I (4) is smaller than the diameter of the cylindrical through hole I (8), and the left end and the right end of the cylindrical barrel I (4) and the left end and the right end of the cylindrical through hole I (8) are flush and are in sealing connection; the hollow part of the cylinder I (4) is a fiber conveying channel III;
the cylindrical barrel II (5) is positioned in the cylindrical through hole II (9), the cylindrical barrel II and the cylindrical through hole II are coaxial, the outer diameter of the cylindrical barrel II (5) is smaller than the diameter of the cylindrical through hole II (9), and the left end and the right end of the cylindrical barrel II (5) are flush and connected in a sealing manner; the hollow part of the cylinder II (5) is the fiber conveying channel IV;
the cylindrical through hole I (8) is communicated with the fiber conveying channel I (6), and the connection point of the cylindrical through hole I and the fiber conveying channel I is positioned on the hole wall of the cylindrical through hole I (8);
The cylindrical through hole II (9) is communicated with the fiber conveying channel II (7), and the connection point of the cylindrical through hole II and the fiber conveying channel II is positioned on the hole wall of the cylindrical through hole II (9);
the side wall of the cylinder I (4) is provided with n groups of through holes III (10), n is 4-6, and each group contains 5-8 through holes III (10); one end of each through hole III (10) is intersected with the outer wall of the cylindrical barrel I (4), the intersection point is marked as a point p, the other end of each through hole III is intersected with the inner wall of the cylindrical barrel I (4), the intersection point is marked as a point q, and the point p is positioned on the left side or the same side of the point q along the length direction of the cylindrical barrel I (4); the 1 st to n th groups of through holes III (10) are arranged at intervals along the length direction of the cylindrical barrel I (4); the included angle between the central axis of each through hole III (10) and the left-right direction is 85-90 degrees, and the central axis of each through hole III (10) is intersected with the central axis of the cylindrical barrel I (4);
the side wall of the cylinder II (5) is provided with m groups of through holes IV (11), m is 4-5, and each group of through holes IV (11) comprises 5-8 through holes; one end of each through hole IV (11) is intersected with the outer wall of the cylinder II (5), the intersection point is marked as a point f, the other end of each through hole IV is intersected with the inner wall of the cylinder II (5), the intersection point is marked as a point g, and the point f is positioned on the left side or the same side of the point g along the length direction of the cylinder II (5); the 1~m groups of through holes IV (11) are arranged at intervals along the length direction of the cylindrical barrel II (5); the included angle between the central axis of each through hole IV (11) and the left-right direction is 85-90 degrees, the central axis of each through hole IV (11) is not intersected with the central axis of the cylindrical barrel II (5), and the interval is 1-2 mm;
Each group of through holes III (10) are uniformly distributed around the circumference of the central axis of the cylinder I (4); each group of through holes IV (11) are uniformly distributed around the circumference of the central axis of the cylinder II (5);
n groups of through holes III (10) are all round through holes, and the diameters of the n groups of through holes III are 1-2 mm; the distance between the point q corresponding to two adjacent groups of through holes III (10) in the 1 st to n th groups of through holes III (10) is 15 to 20mm, and the minimum distance between the point q corresponding to the through holes III (10) and the two ends of the cylindrical barrel I (4) is 10 to 15mm; the m groups of through holes IV (11) are all round through holes, and the diameters of the through holes IV are 1-2 mm; the distance between the point g corresponding to two adjacent groups of through holes IV (11) in the 1~m group of through holes IV (11) is 25-30 mm, and the minimum distance between the point g corresponding to the through holes IV (11) and the two ends of the cylindrical barrel II (5) is 10-15 mm;
the short fiber A conveying device is communicated with the fiber conveying channel I (6); the short fiber B conveying device is communicated with a fiber conveying channel II (7);
the high-pressure air flow III jet device is communicated with the fiber conveying channel I (6) and is used for providing high-pressure air flow III, and the pressure intensity of the high-pressure air flow III and the size of the nozzle are matched with each other so that the pressure intensity of the high-pressure air flow I entering the through hole III (10) is 1-2 MPa;
the high-pressure air flow IV injection device is communicated with the fiber conveying channel II (7) and is used for providing high-pressure air flow IV, and the pressure intensity of the high-pressure air flow IV and the size of the nozzle are matched with each other so that the pressure intensity of the high-pressure air flow II entering the through hole IV (11) is 0.5-1 MPa;
The filament multifilament conveying device is used for conveying the filament multifilament into the fiber conveying channel III and the fiber conveying channel IV in sequence.
8. The device according to claim 7, characterized in that the radius of the cylindrical through hole I (8) is 20-35 mm and the radius of the cylindrical through hole II (9) is 65-80 mm; the inner diameter of the cylinder I (4) is 2-4 mm, the wall thickness is 10-25 mm, and the length is 50-100 mm; the inner diameter of the cylinder II (5) is 8-10 mm, the wall thickness is 35-40 mm, and the length is 200-300 mm; the length of the fiber conveying channel I (6) is 10-20 mm, and the length of the fiber conveying channel II (7) is 35-45 mm.
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| CN116497494A (en) | 2023-07-28 |
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