JP2000239929A - False-twisted processed yarn, device for producing the same, method for producing the same and knitted or woven fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a false-twisted yarn wherein thin and thick portions due to drawing and undrawing treatments can be formed in large lengths, respectively, to largely vary the density of the yarn, to provide a device for producing the same, to provide a method for producing the same, and to provide a knitted or woven fabric using the false-twisted yarns. SOLUTION: This false twisted yarn comprises thick portions comprising long undrawn portions and short draw portions and thin portions comprising short undrawn portions and long drawn portions. The lengths of the thick portions and the thin portions apparently are at least 30 mm, preferably at least 300 mm, respectively. The device for producing the false twisted yarn is provided with a rotary drum 14 and a rubber roller which is disposed at a place facing the rotary drum 14, is rotated with the rotation of the rotary drum 14 and is used for pressing a raw yarn 22 to the surface of the rotary drum 14 to draw the raw yarn 22. On the surface of the rotary drum 14, long grooves 15 are continuously formed in the circumferential direction at short distances, and short grooves 16 are also continuously formed at places adjacent to the long grooves 15 in the circumferential direction at long distances.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a false-twisted yarn capable of forming a novel pattern with long shading when it is made into a woven or knitted fabric, an apparatus for manufacturing the same, a manufacturing method thereof, and a knitted fabric.

[0002]

2. Description of the Related Art Conventionally, as this kind of false twisted yarn,
It is known that shading portions are short and continuous, and when fabrics and knits are manufactured using the yarns, the resulting woven fabric or knitting has a fine pattern formed based on the shading portions of the yarns. .

[0003] Further, an apparatus for producing such a yarn includes a rotating drum and a rubber roller which is arranged opposite to the rotating drum to sandwich and stretch the yarn. On the surface of the rotating drum, long grooves and short grooves extending on the same circumference are randomly formed at predetermined intervals. And
When the yarn is located in the long or short groove, an unstretched portion is formed, and when the yarn is located on the rotating drum surface other than the long or short groove, a stretched portion is formed. Thereafter, the drawn yarn is false-twisted by the false-twisting mechanism to produce a false-twisted yarn.

[0004]

However, since the conventional false twisted yarn as described above has short and dark portions each connected continuously, it is formed when fabrics and knits are manufactured using the yarn. There is a problem that the pattern becomes a fine pattern, lacks sharpness of shading, and a novel appearance using shading cannot be obtained.

[0005] In a conventional apparatus for producing such false twisted yarn, a long groove and a short groove are formed on the same circumference on the surface of the rotating drum. For this reason, the length of both grooves can be slightly changed, but there is a limit, and a short light portion and a dark portion formed by a drawn portion and an undrawn portion are repeatedly formed in the same pattern in the obtained processed yarn. For this reason, a long light portion and a dark portion cannot be formed in the processed yarn in different patterns, and there has been a problem that a novel appearance having clear light and shade portions cannot be obtained.

The present invention has been made by focusing on the problems existing in the prior art as described above. An object of the present invention is to provide a false-twisted yarn in which a light portion and a dark portion can be elongated by drawing and undrawing, and a change in light and shade can be formed largely. Another object of the present invention is to provide a false twisted yarn manufacturing apparatus and a manufacturing method capable of easily manufacturing a false twisted yarn having a large change in shading with a simple configuration. It is still another object of the present invention to provide a knitted or woven fabric having a sharp pattern and a varied appearance when a woven or knitted fabric is manufactured using false twisted yarn. .

[0007]

In order to achieve the above object, the false twisted yarn according to the first aspect of the present invention comprises:
It is composed of a dark portion formed by connecting a long undrawn portion and a short drawn portion and a light portion formed by connecting a short undrawn portion and a long drawn portion, and the lengths of the dark portion and the light portion are at least respectively. 30 mm.

[0008] The false twisted yarn according to the second aspect of the present invention,
In the invention according to claim 1, the length of each of the dark portion and the light portion is at least 300 mm. The apparatus for producing false twisted yarn according to the third aspect of the invention is a rotating drum, and a rotating drum, which is disposed to face the rotating drum, rotates with the rotation of the rotating drum, and presses the yarn against the rotating drum surface to form the yarn. A rotary roller for stretching is provided, and long grooves extending in the circumferential direction are continuously formed at short intervals on the surface of the rotary drum, and short grooves extending in the circumferential direction are provided at positions adjacent to the long grooves at long intervals. It is configured such that when the yarn is located in the long groove or the short groove, an undrawn portion is formed, and when the yarn is located on the surface of the rotating drum other than the long groove or the short groove, the drawn portion is formed, Further, a false twisting mechanism is provided for false twisting the yarn on which the stretched portion or the unstretched portion is formed.

According to a fourth aspect of the present invention, in the apparatus of the third aspect, the yarn supplied to the surface of the rotary drum is freely movable.
The method for producing a false twisted yarn according to the fifth aspect of the present invention provides a method for producing a false twisted yarn, the rotating drum being disposed to face the rotating drum, rotating with the rotation of the rotating drum, and pressing the yarn against the rotating drum surface to form the yarn. A rotary roller for stretching is provided, and long grooves extending in the circumferential direction are continuously formed at short intervals on the surface of the rotary drum, and short grooves extending in the circumferential direction are provided at positions adjacent to the long grooves at long intervals. It is configured such that when the yarn is located in the long groove or the short groove, an undrawn portion is formed, and when the yarn is located on the surface of the rotating drum other than the long groove or the short groove, the drawn portion is formed, Further, in a false twisted yarn manufacturing apparatus provided with a false twisting mechanism for false twisting a yarn on which a drawn portion or an undrawn portion is formed, the yarn is supplied to the surface of a rotating drum, and a portion provided with a long groove and a short groove are provided. Between the part where is provided After pressing to stretched or unstretched the rotating drum surface yarn by rotating rollers while being reciprocated at random, it is intended to false twist by the false twist mechanism.

[0010] A woven or knitted fabric according to the invention of claim 6 is a woven or knitted fabric using the false twisted yarn of claim 1 or 2.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail. First, the false twisted yarn will be described.

As shown in FIGS. 4A and 4B, the false twisted yarn 11 has a long stretched portion 12a and a short unstretched portion 13a.
Are formed by the light portion 12 and the short extended portion 12a formed by a series of the unstretched portions 13a. The light portion 12 and the dark portion 13 are so-called thin (THIN) and thick (THICK), respectively. Each of the light portion 12 and the dark portion 13 is formed to have a length of at least 30 mm, preferably at least 300 mm. The upper limit of the length of each of the light portion 12 and the dark portion 13 is usually about 700 mm. Therefore, in the false twisted yarn 11, the light portion 12 and the dark portion 13 are each formed longer than in the prior art, and the change in light and shade is formed to be large.

Next, an apparatus for producing the false twisted yarn 11 will be described. As shown in FIGS. 1 and 6, the rotary drum 14 is formed in a cylindrical shape and is rotated at a predetermined peripheral speed. A long groove 15 extending in the circumferential direction on the same circumference, a long groove 15
The non-groove portions 14a between them have a random length and are formed at random intervals. Further, short grooves 16 extending in the circumferential direction on the same circumference and non-groove portions 14b between the short grooves 16 have random lengths at adjacent positions, respectively.
They are formed at random intervals. The rubber roller 17 as a rotating roller is disposed at a position facing the rotating drum 14, and is driven to rotate by the rotation of the rotating drum 14.

A pair of tension bars 18 and 19 are provided between the rotary drum 14 and the yarn supply package 20. The tension bars 18 and 19 pass from the yarn supply package 20 to the rotary drum 14 through the guide roller 21 and the space between the tension bars 18 and 19. A tension is applied to the supplied yarn 22. The yarn 22 supplied to the rotary drum 14 via the tension bars 18 and 19 is randomly reciprocated (traverse) between a position where the long groove 15 is located and a position where the short groove 16 is located on the outer peripheral surface of the rotary drum 14. It has become so.

The feed roller 23 is disposed at a position rearward of the rotary drum 14, and the feed roller 23 and the rubber roller 17
The thread drawn out from between is drawn out. The yarn 22 is stretched by passing the yarn 22 between the rotating drum 14 and the rubber roller 17. At this time, when the raw yarn 22 is positioned on the surface of the rotary drum 14, the raw yarn 22 is drawn to form a drawn portion 12a,
When the raw yarn 22 is located on the long groove 15 or the short groove 16, the unstretched portion 13a is formed without being stretched.

A first heater 24 as a heating device is disposed at a position behind the feed roller 23, and keeps the state of the yarn in which the stretched portion 12a and the unstretched portion 13a are formed. False Twist Spindle 25 Constituting False Twist Mechanism
Is arranged at a position behind the first heater 24, and twists the yarn drawn from the first heater 24 by the first delivery roller 26 located behind the first heater 24. The yarn is given a texture and softness.

A second heater 27 as a heating device is provided behind the first delivery roller 26, and heats the false twisted yarn drawn in by the second delivery roller 28 behind the second delivery roller 26 to fix its state. I have. Cheese 2
Numeral 9 winds the false twisted yarn by the drum 30.

Next, a method for producing a false twisted yarn will be described. Now, as shown in FIG.
When the rotary drum 14 is driven to rotate at the same time as the rotary drum 14 is driven, the raw yarn 22 passes from the yarn supply package 20 to the guide roller 21 and between the tension bars 18 and 19, and the rotary drum 14 is tensioned. Supplied to The raw yarn 22 is controlled so as to be appropriately traversed from the same circumference of the rotary drum 14 to another circumference. At this time,
As shown in FIG. 2B or FIG.
The raw yarn 22 located on the non-groove portions 14a and 14b on the four surfaces is stretched because it is pulled by the feed roller 23 in a state of being sandwiched between the rubber roller 17 and is thinly stretched.

On the other hand, as shown in FIG. 2 (a) or FIG. 3 (a), a long groove 15 or a short groove 16 is formed on the surface of the rotary drum 14, and the raw yarn 22 is formed on the grooves 15, 16. Is not applied, no tension is applied by the feed roller 23 and the sheet is not stretched. For this reason, when the raw yarn 22 is located on the peripheral surface having the long groove 15 on the surface of the rotary drum 14, the yarn having the long unstretched portion 13a and the thick portion 13 formed by the short stretched portion 12a as shown in FIG. Become. Also,
When the raw yarn 22 is located on the peripheral surface of the rotary drum 14 having the short groove 16, the yarn has a light stretched portion 12 composed of a long stretched portion 12a and a short unstretched portion 13a as shown in FIG. 4B.

Subsequently, the drawn yarn is further pulled out by a first delivery roller 26, and is heated to a first heater 24. Thereby, the drawn state or undrawn state of the yarn is maintained. Thereafter, the yarn is subjected to false twisting by twisting and untwisting by the false twisting spindle 25. By this false twist, the yarn is crimped, and elasticity and bulkiness are imparted.

Next, the false-twisted yarn is moved by the second delivery roller 28. And the second heater 2
7, and the false twisted state is maintained, and the uniformity of the yarn is achieved. Finally, the false twisted yarn 11 subjected to the false twisting process is moved by the drum 30 and wound around the cheese 29.

In this way, the raw yarn 22 is
4 Long grooves 15 or short grooves 1 formed on different circumferences of the surface
6, a portion having a dark portion 13 mainly by a long unstretched portion 13a and a light portion 1 mainly by a long stretched portion 12a
2 is obtained. That is,
In the thick portion 13, since the short stretched portion 12a is included in the long unstretched portion 13a and the short stretched portion 12a is extremely shorter than the long unstretched portion 13a, it is as if the short stretched portion 12a disappears and becomes longer. Since the unstretched portions 13a appear to be continuously connected, the extremely long unstretched portions 1
It looks like 3a.

Conversely, in the light portion 12, the long extending portion 1
There is an extremely short unstretched portion 13a in 2a, and conversely to the above, the stretched portion 12a is continuous, so that it looks like an extremely long stretched portion 12a.

The apparent unstretched portion 13a and the stretched portion 12a are each at least 30 mm or more, and at least 300 mm or more. These unstretched portions 13a and stretched portions 12a can be formed as long as about 700 mm.

A woven fabric is obtained by weaving the false twisted yarn 11 produced as described above using at least one of a warp and a weft, and a knitted fabric is obtained by knitting the false twisted yarn 11 with a knitting machine. can get. For example, as shown in FIG. 5, a false knitting yarn 11 is connected in a loop shape using a knitting machine and knitted to obtain a tubular knitted fabric 31. At this time, annular patterns having different widths formed by the dark portions 13 of the false twisted yarn 11 are formed between the light portions 12 at random intervals. FIG. 5 schematically shows a knit 31 obtained by tubular knitting.

The effects exerted by the above embodiment will be described below. According to the false twisted yarn 11 of the embodiment, the long grooves 15 and the non-groove portions 14a are continuously formed at random lengths on one circumference of the surface of the rotating drum 14, and are formed on the other circumferences. The short groove 16 and the non-groove portion 14b having a predetermined length were continuously formed at random lengths. For this reason, the light portion 12 and the dark portion 13 which are drawn and undrawn can be formed in the original yarn 22 to have a length of at least 30 mm, and the change in light and shade can be made large.

According to the false twisted yarn 11 of the embodiment, by forming a plurality of long grooves 15 and short grooves 16 on the surface of the rotary drum 14 in parallel, the length of the drawn portion of the yarn obtained by drawing and the undrawn state The lengths of the parts can be apparently formed to be at least 300 mm each. For this reason, the change in shading of the yarn obtained by drawing can be further increased and formed clearly.

According to the apparatus for manufacturing the false twisted yarn 11 of the embodiment, the long grooves 15 extending in the circumferential direction are formed at random on the surface of the rotary drum 14 at short intervals, and the long grooves 15 are formed continuously. With a simple configuration in which short grooves 16 extending in the circumferential direction are formed at adjacent positions randomly and continuously at long intervals, it is possible to manufacture a false twisted yarn having a large change in shading.

According to the apparatus for producing false twisted yarn 11 of the embodiment, the original yarn 22 is supplied from the yarn supply package 20 to the surface of the rotary drum 14 via the guide roller 21 and the tension bars 18 and 19, By supplying the yarn 22 in a freely movable manner, the raw yarn 22 can be smoothly drawn on the surface of the rotary drum 14.

According to the method for producing the false twisted yarn 11 of the embodiment, the raw yarn 22 is randomly traversed between the portion where the long groove 15 is provided and the portion where the short groove 16 is provided. After the yarn is pressed against the surface of the rotary drum 14 by the rubber roller 17 and drawn or undrawn, the yarn is false-twisted by the false-twisting spindle 25. In this step, twisting and untwisting of the yarn are performed subsequently. For this reason, the false twisted yarn 11 having a large change in shading can be easily manufactured.

According to the method for producing the false twisted yarn 11 of the embodiment, the yarn is given elasticity and bulkiness by the false twist, and the texture of the false twisted yarn 11 is improved. According to the woven or knitted fabric of the embodiment, the aforementioned false twisted yarn 1
By using 1 to form a woven or knitted fabric, for example, the annular pattern formed on the knitted fabric 31 can have a clear and colorful appearance and a varied appearance. Moreover, the woven or knitted fabric is given elasticity and bulkiness, and the texture is improved.

The above embodiment can be modified as follows. The number of the long grooves 15 or the short grooves 16 on the same circumference may be changed by changing the length of the long grooves 15 or the short grooves 16 on the surface of the rotary drum 14.

With this structure, the length of the light portion 12 and the dark portion 13 can be changed by stretching and undrawing the obtained false twisted yarn 11 so that the change in shading is different from that of the embodiment. can do.

The traverse of the yarn 22 located on the rotary drum 14 may be appropriately controlled by increasing the residence time on the long groove 15 side or increasing the residence time on the short groove 16 side. .

With this configuration, the length of the light portion 12 and the dark portion 13 of the obtained false twisted yarn 11 can be changed, and the change in the light and shade can be different from that of the embodiment.

The false twisted yarn 11 obtained as described above may be dyed in a desired color. With this configuration, the dark portion 13 of the false twisted yarn 11 becomes darker and clearer and sharper by dyeing, and the contrast with the light portion 12 can be expressed.

A portion having a long groove 15 in the circumferential direction and a portion having a short groove 16 in the circumferential direction on the surface of the rotary drum 14 are arranged in a large number of four or more rows in the axial direction of the rotary drum 14;
Control may be performed so that the yarn 22 is traversed to a predetermined position in those portions.

In this case, the false twisted yarn 1
The combination of the lengths of one light part 12 and one dark part 13 can be varied in various ways. A knit having a desired pattern may be formed by flat knitting, flat knitting, circular knitting, or the like using the false twisted yarn 11.

With such a configuration, a knitted fabric such as a sweater or a cardigan having a desired pattern can be obtained. Further, a technical idea grasped from the embodiment will be described below.

The false twisted yarn according to claim 1 or 2, wherein the unstretched portion and the stretched portion are alternately connected to each other in the dark portion and the light portion. With this configuration, the obtained false twisted yarn can be made more uniform as a whole.

The length and interval of the long groove and the short groove are each formed randomly.
3. The apparatus for producing false twisted yarn according to 1.). With such a configuration, the density of the obtained false twisted yarn can be changed.

The apparatus for producing a false twisted yarn according to claim 3 or 4, further comprising a heating device between the rotary drum and the false twisting mechanism and after the false twisting mechanism. With this configuration, the stretched state of the yarn can be reliably maintained, and false twisting (twisting and untwisting) can be reliably performed.

The apparatus for producing false twisted yarn according to claim 4, wherein the yarn supplied to the surface of the rotary drum is supplied while being tensioned by a tension bar. With this configuration, the yarn supplied to the rotating drum can be smoothly and reliably drawn.

[0044]

As described above, the present invention has the following advantages. According to the false twisted yarn according to the first aspect of the present invention, the light and dark portions of the original yarn, which are drawn and undrawn, can each be at least 30 mm in length, and the change in light and shade can be made large.

According to the false twisted yarn of the invention described in claim 2, in addition to the effect of the invention described in claim 1, the change in shading of the yarn obtained by drawing can be further increased and clearly formed. it can.

According to the apparatus for producing a false twisted yarn of the third aspect of the present invention, a false twisted yarn having a large change in shading can be produced with a simple structure. Claim 4
According to the apparatus for producing a false twisted yarn of the invention described in (1), in addition to the effect of the invention described in (3), the original yarn can be smoothly drawn on the surface of the rotating drum.

According to the method for producing a false twisted yarn of the invention described in claim 5, a false twisted yarn having a large change in shading can be easily produced. According to the woven or knitted fabric of the sixth aspect of the present invention, the pattern formed on the woven or knitted fabric can be sharp and have a varied appearance.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state where an original yarn is introduced onto a rotating drum and drawn.

FIG. 2A is a cross-sectional view showing a state in which the original yarn is located on a long groove, and FIG. 2B is a cross-sectional view showing a state in which the original yarn is located on a non-groove portion of a rotary drum.

FIG. 3A is a cross-sectional view illustrating a state in which the original yarn is located on a short groove, and FIG. 3B is a cross-sectional view illustrating a state in which the original yarn is located on a non-groove portion of a rotary drum.

FIG. 4 (a) is a partial front view showing a false twisted yarn in which a long dark portion and a short light portion are connected, and FIG. 4 (b) is a false twisted yarn in a state where a long light portion and a short dark portion are connected. FIG.

FIG. 5 is a perspective view showing a knitted fabric in a state of being knitted into a tubular shape using false twisted yarn.

FIG. 6 is a schematic view showing an apparatus for producing false twisted yarn.

[Explanation of symbols]

11: False twisted yarn, 12: Light part, 12a: Stretched part, 1
3 ... dark part, 13a ... unstretched part, 14 ... rotating drum, 14
a, 14b: non-groove portion, 15: long groove, 16: short groove, 17 ...
A rubber roller as a rotating roller, 25 a false twist spindle as a false twist mechanism, 31 a knit.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) D03D 15/00 D03D 15/00 A D04B 1/16 D04B 1/16 (72) Inventor Meshin Watanabe Gifu 544 Suga, Masaki-machi, Hashima-shi 17 Kawabo Texture Co., Ltd. F-term (reference) 4L002 AA05 AB04 AC01 AC07 BA01 EA06 FA01 4L036 AA01 MA04 PA03 PA05 PA14 RA04 UA25 4L048 AA36 AB21 AC01 AC12 BA02 CA04 CA13

Claims (6)

[Claims] 1. A thick portion formed by connecting a long undrawn portion and a short drawn portion and a light portion formed by connecting a short undrawn portion and a long drawn portion. False twisted yarns each having a length of at least 30 mm. 2. The false twisted yarn according to claim 1, wherein each of the dark portion and the light portion has a length of at least 300 mm. 3. A rotary drum, comprising: a rotary drum; and a rotary roller disposed opposite to the rotary drum, the rotary roller rotating with the rotation of the rotary drum, and pressing the yarn against the surface of the rotary drum to stretch the yarn. Long grooves extending in the circumferential direction are continuously formed on the surface at short intervals at short intervals, and short grooves extending in the circumferential direction are continuously formed at long intervals at positions adjacent to the long grooves, so that the yarn is elongated or short. An unstretched portion is formed when the yarn is located in the groove, and a stretched portion is formed when the yarn is located on the surface of the rotating drum other than the long groove or the short groove. Further, the yarn in which the stretched portion or the unstretched portion is formed For producing false twisted yarns with a false twisting mechanism for false twisting. 4. The yarn supplied to the rotating drum surface,
The apparatus for producing false twisted yarn according to claim 3, which is freely movable. 5. A rotary drum, comprising: a rotary drum; and a rotary roller disposed opposite to the rotary drum, configured to rotate with the rotation of the rotary drum, and pressing the yarn against the surface of the rotary drum to stretch the yarn. Long grooves extending in the circumferential direction are continuously formed on the surface at short intervals at short intervals, and short grooves extending in the circumferential direction are continuously formed at long intervals at positions adjacent to the long grooves, so that the yarn is elongated or short. An unstretched portion is formed when the yarn is located in the groove, and a stretched portion is formed when the yarn is located on the surface of the rotating drum other than the long groove or the short groove. Further, the yarn in which the stretched portion or the unstretched portion is formed In a false twisting yarn manufacturing apparatus equipped with a false twisting mechanism for false twisting, a yarn is supplied to the surface of a rotating drum, and a portion between a portion provided with a long groove and a portion provided with a short groove is randomly arranged. Rotate while reciprocating After the yarn has been stretched or unstretched presses the rotating drum surface by La, the production method of the false twisting yarn false twist by the false twist mechanism. 6. A woven or knitted fabric in the form of a woven or knitted fabric using the false twisted yarn according to claim 1.