CN119194688A

CN119194688A - Regenerated wool acrylic polyester blended velvet differentiated fiber and preparation method thereof

Info

Publication number: CN119194688A
Application number: CN202411306578.XA
Authority: CN
Inventors: 郭丽丽; 黄斐; 马协锦; 许蒋潇; 祁欢; 蒋丹; 何佳祺; 徐斐斐
Original assignee: Kuangda Automotive Accessories System Co ltd; Kuangda Fiber Technology Co ltd
Current assignee: Kuangda Automotive Accessories System Co ltd; Kuangda Fiber Technology Co ltd
Priority date: 2024-09-19
Filing date: 2024-09-19
Publication date: 2024-12-27

Abstract

The invention belongs to the technical field of fiber materials, and particularly relates to a regenerated wool acrylic polyester blended and hundred-flower velvet differential fiber and a preparation method thereof, which comprise the following steps of (1) colored polyester POY spinning, (2) colored polyester FDY spinning, (3) core yarn DTY texturing, (4) ATY air-jet texturing, wherein the regenerated wool acrylic polyester blended and hundred-flower velvet differential fiber is prepared by an FDY process, the problem that polyester long fiber cannot be combined with wool fiber is solved, meanwhile, the DTY elastic fiber and the wool acrylic A50/W50 fiber can stretch out of a leather layer and are twisted with the colored polyester FDY strong fiber to form a large terry after the skin core yarn ATY air-jet texturing, the elasticity and wear resistance of the polyester fiber are simultaneously considered while the soft and fine hand feeling of the wool fiber are possessed, the fiber is not easy to crack and pill, and the air permeability is considered simultaneously.

Description

Regenerated wool acrylic polyester blended hundred-flower velvet differential fiber and preparation method thereof

Technical Field

The invention belongs to the technical field of fiber materials, and particularly relates to regenerated wool acrylic polyester blended hundred-flower velvet differential fiber and a preparation method thereof.

Background

The fabric woven by the common polyester (polyethylene terephthalate) filaments has the advantages of good strength, smoothness, stiffness, easy washing, quick drying and the like, but also has the disadvantages of hard hand feeling, poor touch feeling, poor air permeability, poor hygroscopicity and the like.

The wool in the current market has low productivity, rare quantity and high price, and the fiber of pure wool is thin, short and low in strength, so that the manufactured fabric is easy to yellow, hole and pill.

The existing textile technology adopts polyester dyeing to realize wool-like effect, but the imitated polyester wool cannot completely achieve the real wool effect whether the dyeing effect or the real touch sense is achieved, the polyester is long fiber, the wool is short fiber, and the two can not be directly combined to obtain fiber.

Therefore, how to overcome the technical problem that terylene and wool cannot be blended due to inconsistent fiber length is needed to be solved in the field.

It should be noted that the above information disclosed in this background section is only for understanding the background of the inventive concept and therefore the above description is not to be construed as constituting prior art information.

Disclosure of Invention

The embodiment of the disclosure at least provides regenerated wool acrylic polyester blended hundred-flower velvet differential fiber and a preparation method thereof.

In a first aspect, the embodiment of the disclosure provides a method for preparing regenerated wool acrylic polyester blended hundred-flower velvet differential fibers, which comprises the following steps of (1) colored polyester POY spinning, namely respectively placing recyclable chips and color master batches into a storage bin for drying, then feeding the chips into a screw extruder for melting, feeding the chips into a mixer for mixing, feeding the chips into a first spinning box, spraying the chips from spinning holes on a spinneret plate, solidifying the chips into filaments through a first cooling side blowing system, oiling and bundling, and then carrying out winding molding to obtain colored polyester POY filaments; the method comprises (2) colored polyester FDY spinning, namely respectively placing recyclable slices and color master batches into a storage bin for drying, then feeding the color master batches into a screw extruder for melting, feeding the color master batches into a mixer for mixing, feeding the mixture into a second spinning box, spraying the mixture from a spinneret hole on a spinneret plate, solidifying the mixture through a second cooling side blowing system, carrying out stretching and shaping through a first stretching hot roller and a second stretching hot roller, oiling and bundling, carrying out winding and shaping to obtain colored polyester FDY strong fibers, (3) core yarn DTY texturing, namely stretching and false twisting the colored polyester POY yarns, feeding the color polyester POY yarns into a first hot box for heating, cooling, false twisting and untwisting the color polyester POY yarns, feeding the color polyester POY yarns into a second hot box for heating and shaping, oiling and lubricating the color polyester POY yarns, and winding and shaping to obtain DTY elastic fibers, (4) ATY air texturing, namely hanging the DTY elastic fibers, the color FDY strong fibers and wool acrylic fibers A50/W50 fibers according to a sheath-core yarn, respectively feeding the core yarn and the sheath yarn into an air-changing box, wetting the core yarn and the sheath yarn into a high-yarn compressing and air-changing high-speed air-jet spinning nozzle, and forming an air-textured yarn, and performing rolling oiling on the air-textured yarn through a main roller, an auxiliary roller and a rolling oiling roller to obtain the regenerated wool acrylic polyester blended hundred-flower velvet differential fiber.

In an alternative embodiment, the spinning temperature of the first spinning beam in the step (1) is 285 ℃, the spinning speed is 3100m/min, the temperature of the side air blowing of the first cooling side air blowing system is 25 ℃, the wind speed is 0.5m/s, the wind pressure is 50 Pa, and the oiling height is 950mm.

In an alternative embodiment, the spinning temperature of the second spinning beam in the step (2) is 286 ℃, the spinning speed is 4100m/min, the temperature of the side blowing air of the second cooling side blowing system is 25 ℃, the wind speed is 0.55m/s, the wind pressure is 50 Pa, and the oiling height is 1200mm.

In an alternative embodiment, the draw ratio in step (3) is 1.69, the D/Y ratio of the false twist is 1.7, the processing speed is 450m/min, the temperature of the first hot box is 195 ℃, and the temperature of the second hot box is 165 ℃.

In an alternative embodiment, the core filaments of the sheath-core filament in the step (4) are a DTY spandex fiber and a wool acrylic a50/W50 fiber, and the sheath filaments are colored polyester FDY strong fibers.

In an alternative embodiment, the mass percentage of the core filaments in step (4) is 56% and the mass percentage of the sheath filaments is 44%.

In an alternative embodiment, the working speed of the main roller in the step (4) is 220-260m/min, the overfeeding rate of the core yarn is 10-20%, and the overfeeding rate of the sheath yarn is 40-80%.

In an alternative embodiment, the pressure of the high-strength compressed air in the step (4) is 0.6-0.8 MPa, and the flow rate of the air stream is 500-800 m/s.

In a second aspect, the embodiment of the disclosure also provides a regenerated wool acrylic polyester blended nap differential fiber, which is prepared by adopting the method as described above.

In an alternative embodiment, the strength of the regenerated wool acrylic polyester blended nap differential fiber is greater than 1.2 cN/dtex, the elongation at break is 16% -20%, and the crimp contraction is 6% -7.5%.

The regenerated wool acrylic fiber and polyester blended hundred-flower velvet differential fiber and the preparation method thereof have the beneficial effects that the colored polyester FDY strong fiber is obtained through the FDY technology, the problem that polyester long fibers cannot be combined with the wool fiber is solved, meanwhile, the DTY elastic fiber and the wool acrylic fiber A50/W50 fiber can stretch out of the leather layer after the ATY air-textured yarn is formed through the sheath-core yarn hanging, and are twisted with the colored polyester FDY strong fiber to form a large terry, so that the fiber has soft and fine handfeel of the wool fiber, simultaneously has the elasticity and wear resistance of the polyester fiber, is not easy to break holes and pill, and also has air permeability while keeping warm.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a regenerated wool acrylic polyester blended nap differential fiber provided in an embodiment of the present disclosure;

fig. 2 is a bobbin diagram of a regenerated wool acrylic polyester blended nap differential fiber provided in an embodiment of the present disclosure;

In the figure:

1. FDY leather yarn large terry, namely colored terylene FDY strong fiber, 2 DTY elastic fiber core yarn, namely DTY elastic fiber, 3 wool acrylic fiber A50/W50 core yarn, namely wool acrylic fiber A50/W50 fiber.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that a particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Thus, a particular feature, structure, or characteristic may be included within more than one embodiment of the disclosure, such that the phrases are not necessarily referring to the same embodiment. As used herein, the terms "exemplary," "exemplary," and the like are used for purposes of illustration, example, or description. Any embodiment, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments, aspects, or designs. Rather, use of the terms "example," "exemplary," and the like are intended to present concepts in a concrete fashion.

Example embodiments of the present disclosure will be described in more detail herein with reference to the accompanying drawings. As used herein, expressions such as "at least one of a..once more, modify an entire list of elements when following a list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b and c" should be understood to include a only a, b only, c only, both a and b, both a and c, both b and c, or all of a, b and c.

The terminology used herein is for the purpose of describing particular example configurations only and is not intended to be limiting. As used herein, the singular articles "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein should not be construed as necessarily requiring their performance in the particular order discussed or illustrated, unless specifically identified as an order of performance. Additional or alternative steps may be employed.

The embodiment of the disclosure provides a preparation method of regenerated wool acrylic polyester blended hundred-flower velvet differential fibers, which comprises the following steps of (1) colored polyester POY spinning, namely respectively placing recyclable chips and color master batches into a storage bin for drying, then feeding into a screw extruder for melting, feeding into a mixer for mixing, feeding into a first spinning box body, spraying out from a spinneret hole on a spinneret plate, solidifying into filaments through a first cooling side blowing system, oiling and bundling, and then carrying out winding and forming to obtain colored polyester POY filaments; the method comprises (2) colored polyester FDY spinning, namely respectively placing recyclable slices and color master batches into a storage bin for drying, then feeding the color master batches into a screw extruder for melting, feeding the color master batches into a mixer for mixing, feeding the mixture into a second spinning box, spraying the mixture from a spinneret hole on a spinneret plate, solidifying the mixture through a second cooling side blowing system, carrying out stretching and shaping through a first stretching hot roller and a second stretching hot roller, oiling and bundling, carrying out winding and shaping to obtain colored polyester FDY strong fibers, (3) core yarn DTY texturing, namely stretching and false twisting the colored polyester POY yarns, feeding the color polyester POY yarns into a first hot box for heating, cooling, false twisting and untwisting the color polyester POY yarns, feeding the color polyester POY yarns into a second hot box for heating and shaping, oiling and lubricating the color polyester POY yarns, and winding and shaping to obtain DTY elastic fibers, (4) ATY air texturing, namely hanging the DTY elastic fibers, the color FDY strong fibers and wool acrylic fibers A50/W50 fibers according to a sheath-core yarn, respectively feeding the core yarn and the sheath yarn into an air-changing box, wetting the core yarn and the sheath yarn into a high-yarn compressing and air-changing high-speed air-jet spinning nozzle, and forming an air-textured yarn, and performing rolling oiling on the air-textured yarn through a main roller, an auxiliary roller and a rolling oiling roller to obtain the regenerated wool acrylic polyester blended hundred-flower velvet differential fiber.

In some embodiments, the FDY sheath yarn large loops may also be referred to as colored terylene FDY strong fibers or FDY strength fibers, the DTY spandex core yarns may also be referred to as DTY spandex or DTY strength fiber loop yarns, and the wool acrylic A50/W50 core yarns may also be referred to as wool acrylic A50/W50 fibers.

In some embodiments, the colored polyester POY filaments are embodied as POY pre-oriented fibers of PET, the DTY spandex is embodied as DTY spandex of PET, and the colored polyester FDY strength fibers are embodied as FDY strength fibers of PET.

In some embodiments, as shown in fig. 1, the core yarn of the sheath-core yarn is a DTY elastic fiber and a wool acrylic a50/W50 fiber, the sheath yarn is a colored polyester FDY strong fiber, the surface of the core yarn DTY strong fiber has terry threads, the surface of the wool acrylic a50/W50 fiber has wool batting, and the surface of the sheath FDY strong fiber has terry threads, wherein the terry threads of the core yarn DTY strong fiber and the wool acrylic a50/W50 fiber extend out of the sheath and are twisted with the terry threads of the FDY strong fiber.

In some embodiments, preferably, the surface of the regenerated woolen-acrylic polyester blended hundred-flower velvet differential fiber is coated with a grease layer.

In some embodiments, the temperature of drying and heating the slices is 155-165 ℃ and the temperature of drying and heating the color master batch is 125-135 ℃ when the POY fibers and the FDY fibers are spun.

In some embodiments, specifically, in the step (1), the spinning temperature of the first spinning manifold is 285 ℃, the spinning speed is 3100m/min, the temperature of the side air of the first cooling side air blowing system is 25 ℃, the wind speed is 0.5m/s, the wind pressure is 50 Pa, and the oiling height is 950mm.

In some embodiments, the oil product selected during oiling POY fibers is bamboo DELION HQ-4070 oil, and the oiling rate is 0.3% -0.5%.

In some embodiments, specifically, in the step (2), the spinning temperature of the second spinning beam is 286 ℃, the spinning speed is 4100m/min, the temperature of the side blowing air of the second cooling side blowing system is 25 ℃, the wind speed is 0.55m/s, the wind pressure is 50 Pa, and the oiling height is 1200mm.

In some embodiments, the oil product selected when the FDY fiber is oiled is bamboo DELION HQ-2039 oiling agent, and the oiling rate is 0.7% -1.3%.

In some embodiments, specifically, the draw ratio in step (3) is 1.69, the D/Y ratio of the false twist is 1.7, the processing speed is 450m/min, the temperature of the first hot box is 195 ℃, and the temperature of the second hot box is 165 ℃.

In some embodiments, specifically, the mass percentage of core filaments in step (4) is 56% and the mass percentage of sheath filaments is 44%.

In some embodiments, the filament is subjected to changes such as stretching deformation and thermal deformation under the combined action of heat action, twisting torsion force and stretching force (stretching multiple is 1.69), when the filament enters a cooling plate, the thermal deformation of the filament is fixed, the thermoplasticity of the filament is reduced, the filament has certain rigidity and is beneficial to twist transmission, the filament is twisted and untwisted through the steering of a friction disc through a false twister, so that a false twisting effect is formed, the filament is fed into a second hot box under the action of a second roller, the temperature of the hot box is 165 ℃, the shaping effect is completed through the second hot box, the internal stress of the deformed filament is eliminated, the dimensional stability of the fiber is improved, and the relative relaxation state shaping is performed through a third roller, so that the internal stress in most of deformation is eliminated, and the fiber has certain bulkiness and elasticity.

In some embodiments, the oil product selected during oiling of the DTY fiber is a 'transmissible TF-702T terylene DTY oiling agent', and the oiling rate is 2.5% -3.5%.

In some embodiments, specifically, after passing through a core filament roller and a skin filament roller, the fiber tows enter an air-textured box, after being humidified by a nozzle wetting head, the core filaments and the skin filaments penetrate into a filament inlet of a textured nozzle, a compressed air valve is opened, the fiber tows are blown open and blown out under the action of compressed air flow, so that monofilaments are separated in parallel, when leaving an outlet of a nozzle filament channel, the fiber tows strike a blocking ball to turn for 90 degrees to generate a curved arc ring, and interlacing occurs among the fiber filaments to form a certain network and a certain terry.

In some embodiments, specifically, the working speed of the main roller in the step (4) is 220-260m/min, the overfeeding rate of the core yarn is 10% -20%, and the overfeeding rate of the sheath yarn is 40% -80%.

In some embodiments, specifically, the pressure of the high-strength compressed air in step (4) is 0.6-0.8 MPa, and the flow rate of the air stream is 500-800 m/s.

In some embodiments, the oil product "ZhuBen TRICOL M-2084-ANI air-textured yarn oiling agent" selected during ATY air-textured oiling is specifically with an oiling rate of 0.5% -1.0%.

The embodiment of the disclosure also provides a regenerated wool acrylic polyester blended hundred-flower velvet differential fiber, which is prepared by adopting the method.

Examples

(1) Drying the color master batch and the slices at 155-165 ℃, enabling the dried color master batch and the dried slices to enter a screw extruder according to the adding proportion of 3-5% of the number of the slices, controlling the temperature (the temperature is 286 ℃) through a temperature sensor to enable the master batch and the slices to be molten, heating the whole melt through a biphenyl boiler to generate biphenyl for heat preservation, finally filtering the melt after reaching a spinning box through a metering pump and a spinning component, uniformly mixing the melt, distributing the melt into each spinneret (48 holes) to form uniform thin flow, spraying the uniform thin flow out of the spinneret holes, enabling the thin flow to be solidified into filaments through a cooling side blowing system (the side blowing temperature is 25 ℃, the wind speed is 0.55m/s, the wind pressure is 50 Pa), oiling and bundling (the oiling height is 1200 mm), improving the cohesiveness, the winding property and static elimination of the filament bundles, and stretching and shaping the filament bundles through a first hot roller and a second hot roller (the temperature of 1650 ℃ and the FDm/min, the temperature of the first hot roller is 1650m/min, the temperature of the second hot roller is 140 ℃ and the filament winding speed of the filament is 140 ℃ and the filament is formed at the final fiber winding speed of 0Y/m/Y/m.

(2) The color master batch and the slices in the embodiment are dried at the temperature of 155-165 ℃, the dried color master batch and the dried slices enter a screw extruder together according to the adding proportion of 3-5% of the number of the slices, the temperature is controlled by a temperature sensor (285 ℃) to melt the slices, the whole melt is heated by a biphenyl boiler to generate biphenyl for heat preservation, the melt reaches a spinning box body and is finally filtered by a metering pump and a spinning component, the melt is uniformly mixed and then distributed into each spinneret plate (36 holes of the spinneret plate) to form uniform thin flow, the thin flow is sprayed out of the spinneret holes, the thin flow is solidified and solidified into filaments by a cooling side blowing system (the lateral blowing temperature is 25 ℃, the wind speed is 0.5m/s, the wind pressure is 50 Pa), oiling and bundling (the oiling height is 950 mm) are carried out, the cohesion, the winding property and static electricity elimination of the filaments are improved, and finally, the POY fiber is obtained by winding and forming by a winding machine, and the POY fiber spinning speed is 3100m/min.

(3) After the fiber tows obtained in the two steps (2) are fed into a first roller of a DTY texturing machine, the fiber tows are stretched by a second roller (stretching multiple is 1.69), meanwhile, the fiber tows are subjected to false twisting action (D/Y ratio is 1.7) transmitted by a false twister, then enter a first hot box (the temperature of the hot box is 195 ℃), in the first hot box, under the combined action of the hot action, twisting torsion force and stretching force, the fiber tows undergo stretching deformation, thermal deformation and other changes, then enter a cooling plate, the thermal deformation of the fixed silk tows, then two silk tows enter an S twisting false twister and a Z twisting false twister respectively, the silk tows are twisted and untwisted through the steering of a friction disc, the silk tows are fed into the second hot box (the temperature of 165 ℃) to finish shaping, the internal stress of the modified silk is eliminated, the dimensional stability of the fiber is improved, then the fiber tows are subjected to shaping in a relatively relaxed state by a third roller, the internal stress in most of deformation is eliminated, the fiber tows have certain bulkiness and elasticity, the prepared DTY elastic silk is oiled by an oiling wheel (oiling rate is 2.5% and the elastic rate is 2.5% to obtain the fiber by winding speed of DTY stretch of 450/m.

(4) Feeding the fiber tows obtained in the step (3) and an outsourcing wool acrylic fiber A50/W50 fiber tows into an air-changing box from an ATY air-changing machine core yarn roller, feeding the fiber tows obtained in the step (1) into the air-changing box from an ATY air-changing machine skin yarn roller, humidifying the core yarns through a nozzle wetting head, penetrating the core yarns and the skin yarns into a yarn inlet of a deformation nozzle together, opening a compressed air valve (the pressure of compressed air is 0.6-0.8 Mpa, the flow rate of air flow is 500-800 m/s), blowing open and disordered under the action of compressed air flow, enabling monofilaments to be separated in parallel, striking the fiber tows to a baffle sphere to turn for 90 degrees when leaving a nozzle yarn channel outlet, forming a curved arc ring, interlacing between the fiber tows to form a certain network and a wool ring, rolling and oiling through the axial direction of an oil wheel, and finally winding and forming through a winding device to obtain the wool acrylic fiber polyester air-deformed yarn with blended spinning soft and fine and high hand feeling, and the air speed is 220-260 m/min.

Specifically, as shown in fig. 2, the yarn bobbin diagram of the regenerated wool acrylic polyester blended velvet differential fiber obtained in this example is shown.

In conclusion, the regenerated wool acrylic fiber and polyester blended hundred-flower velvet differential fiber and the preparation method thereof obtain the colored polyester FDY strong fiber through the FDY process, so that the problem that polyester long fibers cannot be combined with wool fibers is solved, meanwhile, the DTY elastic fiber and the wool acrylic fiber A50/W50 fiber can stretch out of the leather layer after the leather core yarn is hung by ATY air-textured and are twisted with the colored polyester FDY strong fiber to form a large terry, the soft and fine handfeel of the wool fibers is achieved, the elasticity and the wear resistance of the polyester fibers are also achieved, the hole breaking and pilling are not easy, and the air permeability is also achieved while the heat preservation is achieved.

With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.

Claims

1. A method for preparing differentiated fibers of regenerated wool, acrylic and polyester blended velvet, comprising the following steps:

(1) Spinning colored polyester POY, i.e., recyclable chips and masterbatch are placed in a silo for drying, then melted in a screw extruder, mixed in a mixer, and then sent to a first spinning box, ejected from the spinneret holes on the spinneret, solidified into filaments by a first cooling side-blowing system, and then oiled and bundled for winding to obtain colored polyester POY filaments;

(2) Spinning colored polyester FDY, i.e., recyclable chips and masterbatch are placed in a silo for drying, then melted in a screw extruder, mixed in a mixer, and then sent to a second spinning box, ejected from the spinneret holes on the spinneret, solidified by a second cooling side-blowing system, stretched and shaped by a first and second stretching hot rollers, oiled and bundled, and then wound to obtain colored polyester FDY strong fiber;

(3) core yarn DTY stretching, i.e., stretching and false twisting the colored polyester POY yarn, heating it in a first hot box, cooling it, false twisting and untwisting it, heating it in a second hot box, shaping it, lubricating it with oil, and winding it to obtain DTY elastic fiber;

(4) ATY air-changing, i.e. the DTY elastic fiber, the colored polyester FDY strong fiber and the wool acrylic A50/W50 fiber are hung in the form of core-sheath yarn, the core yarn and the sheath yarn are fed through the feeding rollers respectively, and in the air-changing box, the core yarn is first humidified by the nozzle wetting head and then enters the air-changing nozzle together with the sheath yarn, and is mixed into one strand by high-intensity compressed air injection in the air-changing nozzle to form an air-changing primary yarn, and the air-changing primary yarn is passed through the main roller, the auxiliary roller, and rolled for oiling to obtain the regenerated wool acrylic polyester blended flower velvet differentiated fiber.

2. The method for preparing the differentiated fiber of regenerated wool acrylic polyester blended velvet according to claim 1, characterized in that in step (1)

The spinning temperature of the first spinning beam is 285°C and the spinning speed is 3100 m/min;

The temperature of the side-blowing air of the first cooling side-blowing system is 25°C, the wind speed is 0.5m/s, and the wind pressure is 50 Pa;

The oiling height is 950 mm.

3. The method for preparing the differentiated fiber of regenerated wool acrylic polyester blended velvet according to claim 1, characterized in that in step (2)

The spinning temperature of the second spinning beam is 286°C and the spinning speed is 4100 m/min;

The temperature of the side-blowing wind of the second cooling side-blowing system is 25°C, the wind speed is 0.55m/s, and the wind pressure is 50 Pa;

The oiling height is 1200 mm.

4. The method for preparing the differentiated fiber of regenerated wool acrylic polyester blended velvet according to claim 1, characterized in that in step (3)

The stretching ratio is 1.69, and the D/Y ratio of the false twist is 1.7;

The processing speed is 450m/min;

The temperature of the first heat box is 195°C, and the temperature of the second heat box is 165°C.

5. The method for preparing the differentiated fiber of regenerated wool acrylic polyester blended velvet according to claim 1, characterized in that in step (4)

The core yarn of the sheath-core yarn is a DTY elastic fiber and a wool acrylic A50/W50 fiber, and the sheath yarn is a colored polyester FDY strong fiber.

6. The method for preparing the differentiated fiber of regenerated wool acrylic polyester blended velvet according to claim 1, characterized in that in step (4)

The mass percentage of the core wire is 56%, and the mass percentage of the skin wire is 44%.

7. The method for preparing the differentiated fiber of regenerated wool acrylic polyester blended velvet according to claim 1, characterized in that in step (4)

The working speed of the main roller is 220-260m/min;

The overfeed rate of the core wire is 10%-20%;

The overfeed rate of the leather wire is 40%-80%.

8. The method for preparing the differentiated fiber of regenerated wool acrylic polyester blended velvet according to claim 1, characterized in that in step (4)

The pressure of the high-strength compressed air is 0.6-0.8 MPa, and the flow rate of the air flow is 500-800 m/s.

9. A regenerated wool-acrylic-polyester blended velvet differentiated fiber, characterized in that it is prepared by the method described in any one of claims 1 to 8.

10. The regenerated wool-acrylic-polyester blended velvet differential fiber according to claim 9, characterized in that:

The strength of the regenerated wool acrylic polyester blended velvet differentiated fiber is greater than 1.2 cN/dtex, the elongation at break is 16%-20%, and the curling shrinkage is 6%-7.5%.