CN115045019A - Preparation method of efficient short-process chemical fiber fluff yarn - Google Patents
Preparation method of efficient short-process chemical fiber fluff yarn Download PDFInfo
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- CN115045019A CN115045019A CN202210850556.4A CN202210850556A CN115045019A CN 115045019 A CN115045019 A CN 115045019A CN 202210850556 A CN202210850556 A CN 202210850556A CN 115045019 A CN115045019 A CN 115045019A
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- yarn
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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
- D01H13/00—Other common constructional features, details or accessories
- D01H13/28—Heating or cooling arrangements for yarns
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/30—Moistening, sizing, oiling, waxing, colouring, or drying yarns or the like as incidental measures during spinning or twisting
- D01H13/302—Moistening, e.g. for wet spinning
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J3/00—Modifying the surface
- D02J3/02—Modifying the surface by abrading, scraping, scuffing, cutting, or nicking
Abstract
The invention relates to a preparation method of high-efficiency short-process chemical fiber fluff yarn, which is carried out on an integrated chemical fiber fluff yarn preparation device and comprises the following steps: (1) firstly, making the yarn pass through a pre-stretching roller and then pass through an input roller, a wetting device and a texturing nozzle at a certain overfeed rate to prepare air textured yarn; (2) then the prepared air textured yarn is conveyed by an output roller and is led in from a forward yarn opening of the sanding device, the yarn sequentially passes through a plurality of guide rollers which are arranged in the sanding device and can move around a rotating shaft, and two outer side surfaces of the yarn are respectively contacted with the outer side surfaces of the corresponding side grinding parts under the guide of the guide rollers, so that sanding treatment is completed; (3) and after the sanding treatment by the sanding device, finally, guiding the fluff yarn out of a rear yarn outlet of the sanding device and winding the fluff yarn on a crimping roller for collecting the yarn. The invention solves the problems of incoherent processing procedure, lower efficiency and less fluff of the prior chemical fiber fluff yarn, and the prepared fluff yarn has higher production efficiency and plump fluff.
Description
Technical Field
The invention belongs to the technical field of yarns, and particularly relates to a preparation method of efficient short-process chemical fiber fluff yarn.
Background
The fluff yarn prepared by twisting and sanding process by using chemical fiber filament as raw material can not meet the requirements of consumers on plump fluff and comfortable hand feeling because of smooth surface and less hairiness of the chemical fiber filament. Therefore, the technology for making the surface of the chemical fiber filament soft, fluffy and rich in hairiness is of great importance in the development of the future textile industry.
The air texturing technique is a technique in which compressed air is introduced into a nozzle, and the textured multifilament yarn is subjected to high-speed turbulence in the nozzle, the individual filaments are separated from each other and vigorously run in the turbulence, and at the moment when the filaments are discharged from the nozzle without tension (i.e., overfeed), a large number of loops, arcs and tangles are generated in the loosened filament bundle, and this random entangled state causes smooth filaments to become soft, bulky, and low-stretch.
The chemical fiber filaments treated by the air deformation technology become softer and more fluffy, and the surface of the chemical fiber filaments is rich in loops and arcs; the fluff yarn obtained by the sanding treatment has plump fluff and comfortable hand feeling, thus being popular with consumers.
However, the conventional chemical fiber fluff yarn is generally prepared by a two-step method through the cooperation of a twisting machine and a sanding machine, wherein the twisting machine twists a plurality of strands of smooth chemical fiber filaments into one strand, and finally, the strand is sanded by the sanding machine to obtain the fluff yarn. Because the processing procedures of the twisting machine and the sanding machine are separately carried out and are not connected, the yarns obtained after being processed by the twisting machine are plied and then enter the sanding machine again for sanding treatment, thus resulting in lower efficiency.
Therefore, the processing procedure for preparing the fluff yarn needs to be developed towards the integration direction so as to meet the application requirement of high-efficiency production.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for preparing high-efficiency short-process chemical fiber fluff yarn, solving the problems of discontinuous processing procedure, low efficiency and poor fluff of the conventional chemical fiber fluff yarn, and ensuring high production efficiency and rich fluff of the fluff yarn prepared by the method.
In order to solve the technical problems, the invention adopts a technical scheme that: the preparation method of the high-efficiency short-process chemical fiber fluff yarn is implemented on an integrated chemical fiber fluff yarn preparation device, and comprises the following steps of:
(1) two protofilaments are sequentially conveyed to a wetting device and a deformation nozzle through a pre-stretching roller and an input roller at the same speed and a certain overfeed rate;
(2) blowing out the wire loop and wire arc on the surface of the yarn through air in the texturing nozzle to prepare air textured yarn;
(3) then the prepared air textured yarn is conveyed by an output roller and is led in from a forward yarn opening of the sanding device, the yarn sequentially passes through a plurality of guide rollers which are arranged in the sanding device and can move around a rotating shaft, and two outer side surfaces of the yarn are respectively contacted with the outer side surfaces of the corresponding side grinding parts under the guide of the guide rollers, so that sanding treatment is completed;
(4) and after the sanding treatment by the sanding device, finally, guiding the fluff yarn out of a rear yarn outlet of the sanding device and winding the fluff yarn on a crimping roller for collecting the yarn.
Further, the integrated chemical fiber fluff yarn preparation device comprises a pre-stretching roller, an input roller, a wetting device, a deformation nozzle, a shaping oven, an output roller and a fluff grinder which are sequentially arranged, wherein a plurality of guide rollers capable of rotating shaft movement are arranged in the fluff grinder, the guide rollers guide yarns to be in contact with a polishing piece for sanding, and a curling roller is arranged at the output end of the fluff grinder.
Further, the two strands are selected from viscose fibers, nitrate fibers, acetate fibers, cuprammonium fibers, rayon fibers, polyamide 6 fibers, polyacrylonitrile fibers, polyester fibers, polypropylene fibers, polyvinyl formal fibers or specialty fibers.
Further, the strands are fed one or more times.
Further, the overfeed rate is 15% -20%.
Furthermore, the two strands are twisted in a doubling mode and then penetrate and wind on the pre-stretching roller.
Further, the moisture supply amount of the moisture supply device was 0.2 liter/hour.
Further, the working air pressure of the deformation nozzle is 0.9-1.35 MPa.
Further, the shaping is carried out in the shaping nozzle by a shaping oven after air deformation, and the shaping temperature of the shaping oven is 150-230 ℃.
Further, the speed of the input roller is higher than that of the output roller.
The advantages of the invention are as follows:
(1) the invention adopts two chemical fiber fluff yarns to be intertwined by doubling and twisting, so that two filaments are fully combined and are not easy to separate; after the surface is subjected to sanding treatment, the surface has better fluffy feeling and fluffy feeling, and the fluffy feeling (the feeling that fluffy is touched by the fluffy fingers) can be obviously sensed when the surface is touched by hands;
(2) the fabric woven by the chemical fiber fluff yarns has the advantages of softness, fluffiness, uniform fluff distribution, soft luster, stable size, difficulty in fluffing and pilling and the like, and the comfort of the fabric is greatly improved;
(3) in the preparation process of the air textured yarn, two chemical fiber filaments with different specifications are fed, so that the air textured yarn has different section profiles and correspondingly has different aerodynamic effects, and the chemical fiber filaments are fed into the nozzle unit at the same or approximately the same speed, so that terry with required size, density and distribution can be generated, the air textured yarn with various process requirements can be prepared, and then the air textured yarn is ground into fluff yarns with different styles;
(4) the working procedures of the air texturing mechanism and the sanding mechanism for preparing the fluff yarn by the chemical fiber filament are coherent, the fluff yarn can be prepared by a one-step method, and the method is simple and efficient, so that the production efficiency of the fluff yarn is greatly improved;
(5) the production technology is simple and efficient, saves cost, opens up a new trend of production and processing of the fluff yarn, and is suitable for large-scale industrial production.
Drawings
FIG. 1 is a schematic structural diagram of an integrated chemical fiber fluff yarn preparation device according to the present invention.
FIG. 2 is a flow chart of the preparation of the chemical fiber fluff yarn of the present invention.
FIG. 3 is a photomicrograph of a chemical fiber filament according to an embodiment of the present invention.
FIG. 4 is a photomicrograph of the chemical fiber filaments after air texturing according to the embodiment of the present invention.
FIG. 5 is a photomicrograph of a chemical fiber filament after the sanding treatment in accordance with an embodiment of the present invention.
Description of reference numerals: 1-prestretching roller, 2-input roller, 3-wetting device, 4-deformation nozzle, 5-shaping oven, 6-output roller, 7-yarn inlet, 8-guide roller, 9-grinding piece, 10-yarn outlet and 11-curling roller.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be embodied in other specific forms than those described herein, and it will be apparent to those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the present invention.
The first embodiment is as follows: a preparation method of high-efficiency short-process chemical fiber fluff yarn comprises the following steps:
(1) selecting two 300D DTY or FDY (wherein the FDY yarn has smooth appearance, relatively high tightness between fibers with no bulkiness, poor air permeability and hard hand feeling, and the DTY yarn has fibers with loose cross sections with irregularity, better air permeability than FDY and softer hand feeling than FDY) as raw yarns, passing through a pre-stretching roller 1, a feeding roller 2, a humidifying device 3 and a deforming nozzle 4 at a certain overfeed rate, wherein the moisture supply rate of the humidifying device 3 is 0.2L/h, the working air pressure of the deforming nozzle is 0.9-1.35MPa, forming is carried out in the deforming nozzle 4 by a forming oven 5 after air deformation, then leading out by an output roller 6, the forming temperature of the forming oven is 150-230 ℃, the morphological structure of the prepared air deformed yarn is shown in figure 5, and forming a wire ring on the surface of the prepared air deformed yarn, The filaments are frayed and partially broken during processing to form fuzz.
(2) The air textured yarn manufactured in the previous step is introduced into the inside of the sanding device through a yarn inlet 7, two outer side surfaces of the yarn are respectively contacted with outer side surfaces of corresponding side sanding parts 9 under the guidance of five guide rollers 8, finally, a driving motor in the sanding parts drives corresponding driving rollers to rotate, and the rotating direction of the sanding parts 9 is opposite to the advancing direction of the yarn due to the fact that the rotating direction of the driving motor is different from the feeding direction of the yarn, so that the working efficiency is greatly improved, meanwhile, a micro telescopic device can be controlled to drive a power assisting block to extrude and push the sanding parts 9 in an auxiliary groove, so that the distance between the sanding parts 9 and the yarn is changed, the requirements of yarns with different thicknesses during sanding operation are met, and the sanding quality is improved; finally, the fluff yarn is led out from a yarn outlet 10 of the sueder and wound on a crimping roller 11 for collecting the yarn.
Example two: a preparation method of high-efficiency short-process chemical fiber fluff yarn comprises the following steps:
(1) pulling out two chemical fiber filaments from a bobbin creel, and doubling and twisting the two chemical fiber filaments to prepare 730D FDY polyester filaments for facilitating subsequent processing and improving tightness; the chemical fiber filaments are firstly subjected to doubling and twisting, so that the subsequent processing treatment is facilitated, the compactness of two chemical fiber filaments is improved, gaps among the filaments are reduced, the friction force is improved, and the filaments are not easy to slip and deform; then sequentially passing through a pre-stretching roller, an input roller, a wetting device, a deformation nozzle, a shaping oven and an output roller which are wound on the device; wherein two polyester filaments are fed in by the same overfeed, before being fed into the texturing nozzle, the quality of the air textured yarn is improved by carrying out a wet texturing process through a water bath or a water supply device, the working air pressure of the texturing nozzle is 0.9-1.35MPa, the shaping temperature of a shaping hot box is 150-230 ℃, and the speed of an input roller is higher than that of an output roller;
(2) and then sanding the air textured yarn prepared in the previous step: firstly, the yarn is introduced into the interior of the sanding device through a yarn inlet 7, under the guidance of five guide rollers 8, two outer side surfaces of the yarn are respectively contacted with the outer side surfaces of corresponding side sanding parts 9, and finally, a driving motor in the sanding parts drives the corresponding driving rollers to rotate, so that the sanding processing of the yarn is realized; and finally, guiding the fluff yarn out of a rear yarn outlet of the sueding device and winding the fluff yarn on a crimping roller for collecting the yarn.
Referring to fig. 1-2, there are shown a schematic structural diagram and a flow chart of a manufacturing apparatus for manufacturing a chemical fiber fluff yarn in example 1. Firstly, two raw yarns which are doubled and twisted sequentially penetrate through a pre-stretching roller 1, an input roller 2, a wetting device 3, a deformation nozzle 4, a shaping oven 5 and an output roller 6 which are wound on a device; before the chemical fiber filaments are fed into the texturing nozzle, the chemical fiber filaments usually pass through a water bath or water supply device, the device can be installed separately from the nozzle or integrated with the nozzle, and the wet texturing process improves the quality of air textured yarns; starting the device to prepare the air textured yarn, wherein the air textured treatment is to relax the filament bundle and generate a large number of filament loops and filament arcs on the surface so that the originally smooth filaments become soft and fluffy and are convenient for subsequent sanding treatment; then leading in the prepared air textured yarn from a forward yarn opening 7 of the sanding device, sequentially winding the yarn on five guide rollers 8 which can rotate around a rotating shaft in the sanding device, and arranging corresponding five grinding devices 9 on the outer wall of the sanding device to clamp the introduced yarn together with the guide rollers; the sanding treatment is to grind and break the surface layers of various sizes of yarn loops and yarn arcs randomly distributed on the surface after the air texturing treatment and part of core yarns into fluff so as to obtain the fluff yarns with various consumption requirements; after the sanding treatment by the sanding device 9, the fluff yarn is finally led out of the rear yarn outlet 10 of the sander and wound on a crimping roller 11 for collecting the yarn.
The two protofilaments are made of artificial fibers or chemical fibers, the artificial fibers mainly comprise viscose fibers, nitrate fibers, acetate fibers, cuprammonium fibers, artificial protein fibers and the like, and the chemical fibers mainly comprise polyamide 6 fibers (also called chinlon or nylon 6), polyacrylonitrile fibers (also called acrylon), polyester fibers (also called terylene), polypropylene fibers (also called polypropylene fibers), polyvinyl formal fibers (also called vinylon) and special fibers (including fibers prepared by polymerizing tetrafluoroethylene). The protofilaments can be fed in one strand or a plurality of strands, if two protofilaments are fed in with the same overfeed, a parallel air textured yarn is formed; generally, the overfeed is low (15% -20%) and the surface yarn loops are few and dense, and are yarn-imitated type air textured yarns.
Referring to FIGS. 3 to 5, the chemical fiber fluff yarn prepared in example 1 produces dense and soft fluff due to the air texturing and sanding process. Through a microscopic image, no hairiness is seen on the surface of the initial chemical fiber filament, and the surface is smooth, compact, uniform and flat. After the air deformation treatment, a large number of yarn loops and yarn arcs are formed on the surface of the chemical fiber filament, and the yarn becomes fluffy and soft. And finally, performing hair grinding treatment, wherein part of the yarn loops are broken to form fluff, and the other part of fluffy and soft leather yarns are also ground to form a large amount of hair, so that the fluff yarns with a large amount of uniform fluffy fluff on the surface are obtained.
The above detailed description is provided for the preparation method of the high-efficiency short-run chemical fiber fluff yarn provided by the present application, and specific examples are applied herein to explain the principle and the implementation manner of the present application, and the description of the above examples is only used to help understanding the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A preparation method of high-efficiency short-process chemical fiber fluff yarn is characterized in that the chemical fiber fluff yarn is carried out on an integrated chemical fiber fluff yarn preparation device, and comprises the following steps:
(1) two protofilaments are sequentially conveyed to a wetting device and a deformation nozzle through a pre-stretching roller and an input roller at the same speed and a certain overfeed rate;
(2) blowing out the wire loop and wire arc on the surface of the yarn through air in the texturing nozzle to prepare air textured yarn;
(3) then the prepared air textured yarn is conveyed by an output roller and is led in from a forward yarn opening of the sanding device, the yarn sequentially passes through a plurality of guide rollers which are arranged in the sanding device and can move around a rotating shaft, and two outer side surfaces of the yarn are respectively contacted with the outer side surfaces of the corresponding side grinding parts under the guide of the guide rollers, so that sanding treatment is completed;
(4) and after the sanding treatment by the sanding device, finally, guiding the fluff yarn out of a rear yarn outlet of the sanding device and winding the fluff yarn on a crimping roller for collecting the yarn.
2. The method of making a high efficiency short run chemical fiber fluff yarn of claim 1, wherein: the integrated chemical fiber fluff yarn preparation device comprises a prestretching roller, an input roller, a wetting device, a deformation nozzle, a shaping oven, an output roller and a roughening device which are sequentially arranged, wherein a plurality of guide rollers capable of rotating shaft movement are arranged in the roughening device, the guide rollers guide yarns to contact with a polishing piece for roughening, and a curling roller is arranged at the output end of the roughening device.
3. The method of making a high efficiency short run chemical fiber fluff yarn of claim 1, wherein: the two protofilaments are selected from viscose fibers, nitrate fibers, acetate fibers, cuprammonium fibers, artificial protein fibers, polyamide 6 fibers, polyacrylonitrile fibers, polyester fibers, polypropylene fibers, polyvinyl formal fibers or special fibers.
4. The method of making a high efficiency short run chemical fiber fluff yarn of claim 1, wherein: the strands are fed in one or more streams.
5. The method of making a high efficiency short run chemical fiber fluff yarn of claim 1, wherein: the overfeed rate is 15% -20%.
6. The method of making a high efficiency short run chemical fiber fluff yarn of claim 1, wherein: the two protofilaments are twisted by doubling and then wound on a pre-stretching roller.
7. The method of making a high efficiency short run chemical fiber fluff yarn of claim 1, wherein: the moisture-feeding amount of the moisture-feeding device was 0.2 liter/hour.
8. The method of making a high efficiency short run chemical fiber fluff yarn of claim 1, wherein: the working air pressure of the deformation nozzle is 0.9-1.35 MPa.
9. The method of making a high efficiency short run chemical fiber fluff yarn of claim 1, wherein: and shaping the extruded material in the deformation nozzle by a shaping oven after air deformation, wherein the shaping temperature of the shaping oven is 150-230 ℃.
10. The method of making a high efficiency short run chemical fiber fluff yarn of claim 1, wherein: the speed of the input roller is higher than that of the output roller.
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| CN202210850556.4A CN115045019A (en) | 2022-07-19 | 2022-07-19 | Preparation method of efficient short-process chemical fiber fluff yarn |
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| CN202210850556.4A CN115045019A (en) | 2022-07-19 | 2022-07-19 | Preparation method of efficient short-process chemical fiber fluff yarn |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323559A (en) * | 2022-09-20 | 2022-11-11 | 江南大学 | Preparation method of skin-core structured chemical fiber fluff yarn |
| CN116497494A (en) * | 2023-06-30 | 2023-07-28 | 江苏恒力化纤股份有限公司 | Warm-keeping raised yarn and preparation method and device thereof |
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| CN116497494A (en) * | 2023-06-30 | 2023-07-28 | 江苏恒力化纤股份有限公司 | Warm-keeping raised yarn and preparation method and device thereof |
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