Elastic vortex spun core-spun yarn and production method thereof

Abstract

The present invention provides an elastic vortex core-spun yarn and a production method thereof; the elastic vortex core-spun yarn is produced by using an outer wrapped whisker and a core yarn raw material through a vortex core-spun yarn spinning device, the elastic vortex core-spun yarn spinning device comprising a vortex spinning machine and a core yarn guide device arranged on the upper part of the vortex spinning machine; the vortex spinning machine comprises a front roller and a front leather roller (7) and a spindle (8) matched with the front roller; along the processing direction of the core yarn raw material, the core yarn guide device comprises a core yarn guide frame, a core yarn tension disk (16), a core yarn guide hook (15), a core yarn tension control part (14), and a core yarn airflow guide part (13) in sequence. The yarn produced by the method of the present invention can retain the excellent characteristics of high vortex spinning efficiency, smooth fabric surface, and good anti-pilling performance; by changing the type of the core yarn of the vortex core-spun yarn, the yarn also has the characteristics of good elasticity, good elastic recovery performance, soft and comfortable hand feeling, and high yarn strength.

Description

Technical Field

[0001] The invention relates to the field of spinning, in particular to an elastic vortex-spun core-spun yarn. Background Art

[0002] Vortex spinning is a method of using air vortex to condense and twist the fibers that have been loosened into a single state into yarn. Since the vortex replaces the mechanical twisting and condensation and does not require rotating parts, the structure is simple and the spinning speed is high, generally 6 to 7 times higher than ring spinning.

[0003] As a relatively mature new spinning technology, vortex spinning has a short production process, high production efficiency, and low labor. Its products have smooth surface, less hairiness, and good anti-pilling performance, and are favored by textile companies. In recent years, vortex spinning core-spun yarn varieties have been gradually developed to improve the strength and shape retention of ordinary vortex spinning yarns. However, the market generally reflects that vortex spinning yarns have a large modulus, a stiff feel, poor elasticity, and many weak yarn strength nodes. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide an elastic vortex-spun core-spun yarn and a production method thereof, so as to solve the problems in the prior art.

[0005] To achieve the above objectives and other related objectives, the present invention is achieved through the following technical solutions.

[0006] The present invention provides a method for producing an elastic vortex-spun core-spun yarn, which uses outer-wrapped whiskers and core yarn raw materials to produce the elastic vortex-spun core-spun yarn through a vortex-spun core-spun yarn spinning device.

[0007] The elastic vortex spinning core-spun yarn spinning device comprises a vortex spinning machine platform and a core yarn guide device arranged on the upper part of the vortex spinning machine platform;

[0008] The vortex spinning machine comprises a front roller, a front leather roller matched with the front roller, and a spindle;

[0009] Along the processing direction of the core wire raw material, the core wire guiding device includes a core wire guiding frame, a core wire tension disk, a core wire guiding hook, a core wire tension control component, and a core wire airflow guiding component in sequence;

[0010] The core wire raw material is hung on the core wire guide frame, and the core wire guide device is used to feed the core wire raw material into the front roller of the vortex spinning machine and the front leather roller matched with the front roller, and collect it together with the outer wrapped whisk strips after stretching on the vortex spinning machine and enter the spindle, and form elastic vortex spinning core-spun yarn under the action of airflow; the outer wrapped whisk strips are fiber ends including short fibers, and the core wire is an elastic composite wire with spandex fiber as the inner core and wrapped with synthetic fiber filaments.

[0011] According to the technical solution of the present invention, along the processing direction of the yarn, the vortex spinning machine includes a guide frame, a trumpet head guide, a drafting rear roller and a rear leather roller cooperating with the rear roller, a second roller and a second leather roller cooperating with the second roller, a third roller and a third leather roller cooperating with the third roller, a front roller and a front leather roller cooperating with the front roller, a spindle, an output roller and an output leather roller cooperating with the output roller, a yarn clearer assembly and a tension roller.

[0012] According to the technical solution of the present invention, the outer wrapped strands are fiber strands formed by blending one or more fibers selected from cotton, viscose, tencel, modal, polyester and nylon.

[0013] According to the technical solution of the present invention, the outer covering whiskers are of a single color or of two or more colors.

[0014] According to the technical solution of the present invention, in the core yarn raw material, the spandex fiber accounts for 3wt% to 40wt%, the denier of the core yarn raw material is 20D to 200D; and the elongation of the core yarn raw material is 10% to 200%.

[0015] According to the technical solution of the present invention, the core wire tension control component includes a core wire tension roller and a core wire guide roller that cooperates with the core wire tension roller to hold the core wire. The core wire tension control component controls the core wire tension by controlling the rotation speed of the core wire tension roller through a servo motor.

[0016] According to the technical solution of the present invention, the core yarn airflow guide member is used to adjust the relative position of the core yarn and the outer wrapped yarn strip to achieve different yarn styles.

[0017] According to the technical solution of the present invention, the spinning speed of vortex spinning is 200m / min to 450m / min.

[0018] According to the technical solution of the present invention, the jet pressure of the airflow in vortex spinning is 0.20MPa to 0.65MPa.

[0019] According to the technical solution of the present invention, the basis weight of the outer wrapped strands is 10 g / 5 m to 25 g / 5 m.

[0020] An elastic vortex-spun core-spun yarn produced by the above method.

[0021] According to the technical solution of the present invention, the count of the elastic vortex-spun core-spun yarn is 10Tex to 40Tex.

[0022] The beneficial effects of the technical solution of the present invention are:

[0023] In the present invention, the outer fiber strands are fed through the vortex spinning machine, and the core yarn raw material is fed through the core yarn guide device. The two meet at the front roller and the front roller matched with the front roller and enter the spindle together.

[0024] The yarn produced by the method of the present invention can retain the excellent characteristics of high vortex spinning efficiency, smooth surface, and good anti-pilling performance; by changing the type of core yarn of the vortex spinning core-spun yarn, the yarn also has the characteristics of good elasticity, good elastic recovery performance, soft and comfortable hand feel, and high yarn strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram showing the production process of the elastic vortex spun core-spun yarn of the present invention.

[0026] Figure 1 Component number description

[0027] A is the outer fiber strand; B is the core fiber raw material, i.e., the elastic composite fiber;

[0028] 1 is a sliver drum for wrapping the strands; 2 is a sliver guide frame; 3 is a trumpet head sliver guide; 4 is a rear roller for drafting and a rear leather roller matched with the rear roller; 5 is a second roller and a second leather roller matched with the second roller; 6 is a third roller and a third leather roller matched with the third roller; 7 is a front roller and a front leather roller matched with the front roller; 8 is a spindle; 9 is an output roller and an output leather roller matched with the output roller; 10 is a yarn clearer assembly; 11 is a tension roller; 12 is a bobbin yarn; 13 is a core yarn airflow guide; 14 is a core yarn tension control component; 15 is a core yarn guide hook; 16 is a core yarn tension disk; 17 is an elastic composite yarn drum

[0029] Figure 2 The diagram shows the structure of the elastic vortex spun core-spun yarn of the present invention.

[0030] C is the outer short fiber

[0031] D is elastic composite filament

[0032] E is spandex filament DETAILED DESCRIPTION

[0033] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0034] Before further describing the specific embodiments of the present invention, it should be understood that the scope of protection of the present invention is not limited to the specific embodiments described below; it should also be understood that the terms used in the examples of the present invention are intended to describe specific embodiments, rather than to limit the scope of protection of the present invention. The test methods in the following examples without specifying specific conditions are generally carried out under conventional conditions or under conditions recommended by the manufacturers.

[0035] When the embodiments give numerical ranges, it should be understood that, unless otherwise specified in the present invention, both endpoints of each numerical range and any numerical value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as those generally understood by those skilled in the art. In addition to the specific methods, equipment, and materials used in the embodiments, according to the grasp of the prior art by those skilled in the art and the record of the present invention, any methods, equipment, and materials of the prior art similar or equivalent to the methods, equipment, and materials described in the embodiments of the present invention can also be used to realize the present invention.

[0036] Example 1

[0037] The present application discloses a method for producing elastic vortex spun core-spun yarn by using Figure 1 The vortex spinning core-spun yarn spinning device shown in the figure; the elastic vortex spinning core-spun yarn spinning device comprises a vortex spinning machine platform and a core yarn guide device arranged on the upper part of the vortex spinning machine platform;

[0038] Along the processing direction of the core wire raw material, the core wire guiding device includes a core wire guiding frame, a core wire tension disk 16, a core wire guiding hook 15, a core wire tension control component 14, and a core wire airflow guiding component 13 in sequence;

[0039] Along the processing direction of the yarn, the vortex spinning machine includes a guide frame 2, a trumpet head guide 3, a drafting rear roller and a rear leather roller 4 cooperating with the rear roller, a second roller and a second leather roller 5 cooperating with the second roller, a third roller and a third leather roller 6 cooperating with the third roller, a front roller and a front leather roller 7 cooperating with the front roller, a spindle 8, an output roller and an output leather roller 9 cooperating with the output roller, a yarn clearer assembly 10 and a tension roller 11.

[0040] The core wire tension control member 14 comprises a core wire tension roller and a core wire guide roller that cooperates with the core wire tension roller to hold the core wire. The core wire tension control member 14 controls the core wire tension by controlling the rotation speed of the core wire tension roller through a servo motor.

[0041] The outer wrapped strand A is placed in the outer wrapped strand barrel 1, and passes through the strand guide frame 2, the trumpet head strand guide 3, the drafting rear roller and the rear leather roller 4 matched with the rear roller, the second roller and the second leather roller 5 matched with the second roller, the third roller and the third leather roller 6 matched with the third roller to the front roller and the front leather roller 7 matched with the front roller;

[0042] The core wire material B is hung on the elastic composite wire drum, and the core wire material enters the front roller and the front leather roller 7 matched with the front roller through the core wire tension disk 16, the core wire guide hook 15, the core wire tension control component 14, and the core wire air flow guide component 13;

[0043] The core yarn B and the outer fiber A meet at the front roller and the front roller 7 matched with the front roller and enter the spindle 8 together, and are made into elastic vortex spun core yarn under the action of airflow, and are formed into cone yarn 12 through the output roller and the output roller 9 matched with the output roller, the yarn clearer assembly 10, and the tension roller 11. The yarn clearer assembly includes an electronic yarn clearer and scissors, which are used to cut and clear defects in the yarn.

[0044] Example 2

[0045] The outer wrapped sliver in the present application is an undrawn sliver prepared by the processes of cleaning, carding, pre-drawing, sliver rolling, combing and drawing.

[0046] The natural cotton is subjected to the processes of blowing, carding, pre-combining, sliver rolling, combing and sliver drawing to produce natural pure cotton sliver with a sliver weight of 13.5g / 5m.

[0047] The core yarn is made of 75D white T400 filament and 70D spandex empty bag composite stretch yarn, the spandex pre-stretching multiple is 3.5 times, and the composite stretch yarn spandex accounts for 22%.

[0048] On the pure cotton vortex spinning machine, the natural pure cotton strands pass through the trumpet head guide and are drawn by four pairs of rollers, with a total drawing multiple of 101.6 times; the composite elastic yarn is unwound from the yarn tube and passes through the tension disk and stainless steel wire guide hook, and then passes through the tension control device composed of the tension roller controlled by the servo motor and the tension roller. The pre-drawing multiple of the core yarn is set to 1.03 times, and is guided by the wire drawing device to the front jaw to gather with the natural pure cotton strands after drawing. The core yarn and the strands are collected into the spindle through the nozzle. Under the action of high-speed airflow, the natural cotton fiber is evenly wrapped around the composite elastic core yarn, and finally made into 36.9TEX natural pure cotton vortex spinning elastic core-spun yarn. Its structure is as follows Figure 2 shown.

[0049] This yarn can be used in woven products, with a single yarn breaking strength of 14.5CN / DTEX, a minimum breaking strength of 11.5CN / DTEX, and an Uster hairiness index (H) of 0.5. The finished fabric anti-pilling GB / T 4802.2 standard test: front side 4, back side 4, finished fabric FZ / T 01034 standard test: elastic elongation 55%, elastic recovery 97%. High strength, good weavability, soft and comfortable feel, smooth surface, good elasticity and elastic recovery performance. This product retains the characteristics of pure cotton varieties, and is endowed with the excellent characteristics of vortex spinning and elastic core yarn, and is very popular in the market.

[0050] Example 3

[0051] 70% black polyester staple fiber and 30% black viscose staple fiber are respectively subjected to the processes of blending, cleaning, carding, pre-drawing and drawing to produce black TR final drawing, and the sliver weight is 13.5g / 5m.

[0052] The core yarn is made of 30D black polyester DTY filament and 20D spandex empty bag composite stretch yarn. The spandex pre-stretching multiple is 2.5 times, and the composite stretch yarn spandex accounts for 21%.

[0053] On the vortex spinning machine, the black TR final drawing passes through the trumpet head guide and is drawn by four pairs of rollers, with a total drawing multiple of 193.8 times; the composite elastic yarn is unwound from the yarn tube and passes through the tension disk and stainless steel wire guide hook, and then passes through the tension control device composed of the tension roller controlled by the servo motor and the tension roller. The pre-drawing multiple of the core yarn is set to 1.02 times, and is guided by the wire drawing device to the front jaw to gather with the black TR whiskers after drawing. The core yarn and whisker assembly enter the spindle through the nozzle. Under the action of high-speed airflow, the black TR fiber is evenly wrapped around the composite elastic core yarn, and finally made into 18.4TEX black TR vortex spinning elastic core-spun yarn. Its structure is as follows Figure 2 shown.

[0054] The yarn can be used in knitted products, with a single yarn breaking strength of 18.3CN / DTEX, a minimum breaking strength of 14.5CN / DTEX, and an Uster hairiness index (H) of 0.3. The finished fabric anti-pilling GB / T 4802.2 standard test: front side 4, back side 4, finished fabric FZ / T 70006 standard test: elastic elongation 60%, elastic recovery 96%. The yarn is strong, the surface is smooth, the fabric has good elasticity and elastic recovery performance, and the product has excellent shape retention.

[0055] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A method for producing elastic vortex spun core-spun yarn, characterized in that: The elastic vortex spinning core-spun yarn is produced by using the outer whisker and core yarn raw materials through the elastic vortex spinning core-spun yarn spinning device. The elastic vortex spinning core-spun yarn spinning device comprises a vortex spinning machine platform and a core yarn guide device arranged on the upper part of the vortex spinning machine platform; The vortex spinning machine comprises a front roller, a front leather roller (7) cooperating with the front roller, and a spindle (8); Along the processing direction of the core wire raw material, the core wire guiding device comprises in sequence a core wire guiding frame, a core wire tension disk (16), a core wire guiding hook (15), a core wire tension control component (14), and a core wire airflow guiding component (13); The core yarn raw material is hung on the core yarn guide frame, fed into the front roller of the vortex spinning machine and the front leather roller (7) matched with the front roller through the core yarn guide device, and collected together with the outer wrapped whisker after being drawn on the vortex spinning machine and enters the spindle (8), and is made into elastic vortex spinning core-spun yarn under the action of airflow; the outer wrapped whisker is a fiber end-drawn yarn including short fibers, and the core yarn is an elastic composite yarn with spandex fiber as the inner core and wrapped with synthetic fiber filaments; The core wire tension control member (14) comprises a core wire tension roller and a core wire guide roller that cooperates with the core wire tension roller and is used to hold the core wire. The core wire tension control member (14) controls the core wire tension by controlling the rotation speed of the core wire tension roller through a servo motor. The core yarn airflow guide member (13) is used to adjust the relative position of the core yarn and the outer fiber strands to achieve different yarn styles; In the core yarn raw material, spandex fiber accounts for 3wt%~40wt%, the denier of the core yarn raw material is 20D~200D; the elongation of the core yarn raw material is 10%~200%; The jet pressure of the airflow in vortex spinning is 0.20MPa~0.65MPa.

2. The production method according to claim 1, characterized in that Along the processing direction of the yarn, the vortex spinning machine comprises a yarn guide frame (2), a trumpet head yarn guide (3), a drafting rear roller and a rear leather roller (4) cooperating with the rear roller, a second roller and a second leather roller (5) cooperating with the second roller, a third roller and a third leather roller (6) cooperating with the third roller, a front roller and a front leather roller (7) cooperating with the front roller, a spindle (8), an output roller and an output leather roller (9) cooperating with the output roller, a yarn clearer assembly (10) and a tension roller (11).

3. The production method according to claim 1, characterized in that The basis weight of the outer wrapped strands is 10 g / 5m to 25 g / 5m.

4. The production method according to claim 1, characterized in that The outer covering sliver is made of pure cotton, viscose, tencel, modal, polyester, nylon or a blend of several fibers.

5. The production method according to claim 1, characterized in that: The outer covering whiskers are of a single color or of two or more colors.

6. An elastic vortex spun core-spun yarn produced by the production method according to any one of claims 1 to 5.

7. The elastic vortex spun core-spun yarn according to claim 6, characterized in that: The elastic vortex-spun core-spun yarn has a count of 10Tex to 40Tex.

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