JP3502483B2 - Method for producing false twisted composite yarn - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a false-twisted composite yarn that is spun-like and has a sense of volume.

[0002]

2. Description of the Related Art Conventionally, as a method for obtaining a slab-like false twist composite yarn, for example, there is one disclosed in Japanese Patent Publication No. 59-29689. In this publication, a sheath yarn, which is also a filament yarn, is supplied to the twisting area of a core yarn, which is a filament yarn, while overfeeding the core yarn. The yarn thus obtained has a single portion in which the sheath yarn is wound around the core yarn and a triple portion in which the sheath yarn is wound around the core yarn alternately. It is a false twist composite yarn suitable as a material for clothing.

However, in the method for producing the false twist composite yarn, the filament yarn is simply false twisted, and it is easy to obtain a spunlike and voluminous yarn suitable as a material for autumn and winter clothing. is not.

Therefore, for example, Japanese Laid-Open Patent Publication No. 6-313233.
There is a manufacturing method disclosed in the publication. In the publication, as shown in FIG. 3 (the same members as those in the embodiment described later in FIG. 3 are designated by the same numbers), the first yarn 3
By supplying 1α and the second yarn 31β to the mixed fiber nozzle 12 to perform air mixing, mainly the second yarn 31β
Loops are added to the filaments that make up the
The same mixed fiber as the core yarn 31 and the sheath yarn 32 as the third yarn
And false twisting.

As a result, the filament loops of the core yarn 31 fly out of the gaps between the yarns of the sheath yarn 32 wound around the core yarn 31 to give a false twist that is spun-like and has a sense of volume. A composite yarn can be obtained.

[0006]

However, in the manufacturing apparatus described in detail in JP-A-6-313233, the magnet tensor 42 is provided on the roller for supplying the first yarn 31α to the mixed fiber nozzle 12. It is used. The magnet tensor 42 is only rotated along with the tension when the yarn is running, and is not for positively feeding the yarn. That is, as disclosed in the publication, the first yarn 31α can be supplied to the fiber mixture nozzle 12 only with an overfeed rate of about + 1% at most.

In the apparatus, since the false twist feed roller (14) is not arranged in front of the false twist heat fixing heater 17, the delivery roller 19 which regulates the yarn speed at the false twist processing is mixed fiber. It also serves as the false twist feed roller (14) that regulates the yarn speed during the process. Therefore, the overfeed of the core yarn 31 at the time of false twisting is about + 1% by the magnet tensor 42, and this amount of overfeed is insufficient to obtain a good false twist composite yarn. As a result, the wrapping of the triple part becomes loose, and, for example, when the false twist composite yarn is used as the warp of a woven fabric, the triple part is liable to be squeezed by the reed of the loom, or becomes a thread break or nep shape There was a problem such as.

As described above, the above-mentioned JP-A-6-31323 is used.
When the false twist composite yarn was produced according to the technique disclosed in Japanese Patent No. 3, only the false twist composite yarn having a problem in the flat knitting and weaving property could be obtained.

The present invention has been made by paying attention to the problems existing in the above-mentioned prior art, and its object is to provide a false-twisted composite yarn which is excellent in smooth knitting and weaving property and which is spun-like and has a feeling of volume. It is to provide a manufacturing method that can be obtained.

[0010]

In order to achieve the above object, in the invention of claim 1, the mixed yarn is made to have an overfeed rate +
It is a method for producing a false twist composite yarn which is supplied to the twisting zone in the range of 3% to + 20%.

In the invention of claim 2, the overfeed rate of the first yarn is set to ± 0% to + 15%, the overfeed rate of the second yarn is set to + 5% to + 200%, and The overfeed rate of the second yarn is set to be higher than that of the first yarn.

According to the third aspect of the present invention, the third yarn is over-fed by at least 35% from the mixed yarn and supplied to the twisting zone. (Operation) In the present invention having the above-mentioned configuration, by using a so-called core yarn as a mixed yarn, a false-twisted composite yarn having a spun-like and volume feeling can be obtained, and further, the false-twisted composite yarn is It has excellent leveling and weaving properties.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below. FIG. 1A is an enlarged view of the false twist composite yarn obtained by the manufacturing method of the present embodiment.
(B) is the figure which showed typically the winding form of this false twist composite yarn. In the figure, A shows a single part in which the sheath yarn 2 is wound around the core yarn 1, and B shows a triple part in which the sheath yarn 2 is wound around the core yarn 1 in three layers. And
The single portion A and the triple portion B are alternately formed in the yarn traveling direction of the false twist composite yarn.

The core yarn 1 is a first filament yarn.
Second yarn 1 which is a filament yarn like the yarn 1α of
It is configured by air-blending with β. In the concentric yarn 1, the second yarn 1β is wound around the first yarn 1α, and the yarn 1α,
A loop R is added to the filament forming 1β.

By winding the sheath yarn 2 as the third yarn around the core yarn 1 which is the mixed yarn, particularly in the single portion A, from the yarn gap of the sheath yarn 2. The loop R of the filament of the core yarn 1 pops out, and the false twisted composite yarn is a spunlike and voluminous yarn suitable as a material for autumn and winter clothing.

Next, a method for producing the false twist composite yarn having the above-mentioned structure will be described. As shown in FIG. 2, the first yarn 1α, which is a filament yarn, is used for the mixed fiber feed roller 11
And is fed to the mixed fiber nozzle 12 in the mixed fiber process at an overfeed rate of ± 0% to + 15%. The second yarn 1β, which is also a filament yarn, is the mixed fiber feed roller 1
After passing 3, the fiber is supplied to the mixed fiber nozzle 12 at an overfeed rate of + 5% to + 200% and merged with the first yarn 1α. The overfeed rate of the second yarn 1β is larger than that of the first yarn 1α. Therefore, in the core yarn 1, the second yarn 1β is less than the first yarn 1α. The core-sheath relationship in which it is wrapped is established.

The mixed fiber nozzle 12 has a well-known mechanism,
The so-called Taslan processing is performed by blowing air in the traveling direction of the yarns 1α and 1β. Therefore, in the same fiber mixture nozzle 12, the first yarn 1α and the second yarn 1β are air-mixed, and mainly the second yarn 1β.
The loop R is added to the filaments constituting the. The mixed yarn (core yarn) 1 of both yarns 1α and 1β passes through the false twist feed roller 14 and the overfeed rate is + 3% to +.
20% is supplied to the twisting section K which is a false twisting process.

The sheath yarn 2, which is a filament yarn, is supplied through the sheath yarn feeding guide 16 while being over-fed by 35% or more from the core yarn 1 through the sheath yarn feed roller 15, and in the twisting section K, the core yarn is supplied. Merged with 1.

The core yarn 1 and the sheath yarn 2 merged in the twisting section K pass through the false twist heat fixing heater 17 and the false twist spinner 18, and are untwisted in the untwist section T. Then, the untwisted false-twisted composite yarn is fixed by the reheat treatment heater 20 via the delivery roller 19, and further,
It is taken up by a take-up drum 22 via a second delivery roller 21. The rollers (11, 13)
~ 15, 19, 21), the iron core 23α that is positively rotated
A rubber roller 23β is pressed against the rubber roller 23β.

The triple part B of the false twist composite yarn is
It is formed by the positive deflection of the sheath yarn 2 in the twisting section K by the overfeed of the sheath yarn 2 with respect to the core yarn 1 and the propagation of the twist of the yarn due to the rotation of the false twist spinner 18. By overfeeding the sheath yarn 2 by 35% or more over the core yarn 1, the winding of the sheath yarn 2 in the triple portion B becomes tight.

As for the twist of the triple portion B, the twist formed at the time of twist remains in the same direction, and in the single portion A, the twist formed at the time of twist is the untwisting section K after the false twist spinner 18. Is untwisted to give a twist in the opposite direction.

The false-twisted composite yarn obtained as described above was a yarn having a spun-like and voluminous feel, in which the triple part B was hard to be displaced and which was excellent in uniform knitting and weaving properties. In order to obtain such a false twist composite yarn, the mixed yarn (core yarn) 1 is over-fed and supplied to the twisting section K, and the range of the over-feed rate is + 3% to + 20%. It was deduced from experiments by the inventor of the present invention under various conditions. That is, in the yarns outside this range, the displacement of the sheath yarn 2 in the triple portion B became severe and, for example, the woven or knitted fabric could not be used. Therefore, in order to embody the overfeed rate of + 3% to + 20% in the present embodiment, as a manufacturing apparatus, unlike the one used in the conventional publication, the core yarn 1 is overfed to the twisting section K. The one in which the false twist feed roller 14 that can be supplied to the sheet is arranged is used. The overfeed rate of the core yarn 1 is
It is preferably in the range of + 7% to + 15%.

Further, in order to obtain a yarn that is spun-like and has a sense of volume as compared with the false twist composite yarn obtained in JP-A-6-313233, the first yarn forming the core of the core yarn 1 Article 1α overfeed rate ±
0% to + 15%, and the overfeed rate of the second yarn 1β forming the sheath was + 5% to + 200% (overfeed rate of the first yarn 1α <overfeed rate of the second yarn 1β. ). That is, when the overfeed rate of the first yarn 1α is out of the range, the second yarn 1β is less likely to be applied to the first yarn 1α, and good fiber mixing cannot be performed. When the overfeed rate of the second yarn 1β is less than + 5%, the yarn 1β runs substantially parallel to the first yarn 1α, and the core-sheath relationship of the core yarn 1 is not determined. Good mixing cannot be achieved, and further 200
If it exceeds%, the loop R becomes too large, resulting in a yarn with poor handleability.

[0024]

EXAMPLES Next, false twisting was performed under the following processing conditions using the apparatus shown in FIG. (First Example) First yarn: 100 denier 24 filament Second yarn: 100 denier 96 filament Third yarn: 50 denier 48 filament False twist Spinner rotation speed: 200,000 rpm False twist number: 1758T / M False twist overfeed rate: + 8% Second overfeed rate: + 7.5% Take up overfeed rate: + 7.5% False twist heat set heater temperature: 180 ° C Reheat treatment heater temperature: 190 ° C First yarn Overfeed rate of yarn: + 3% Overfeed rate of second yarn: + 30% Overfeed ratio of third yarn: + 82% Vertical distance between running direction line of core yarn and sheath yarn feeding guide: 12
cm Air pressure during fiber mixing: 5 kg / cm ² The false twist composite yarn obtained as described above has a fineness of 31.
It is 5 denier, and it is a thread suitable for the inner fabric of autumn and winter. (Second Example) First yarn: 100 denier 36 filament Second yarn: 150 denier 96 filament Third yarn: 30 denier 12 filament False twist Spinner rotation speed: 150,000 rpm False twist number: 1600 T / M False twist overfeed rate: + 12.4% Second overfeed rate: + 7.5% Take up feed rate: + 7.5% False twist heat fixing heater temperature: 200 ° C Reheat treatment heater temperature: 170 ° C First Overfeed rate of yarn: + 3.4% Overfeed rate of second yarn: + 30% Overfeed rate of third yarn: + 66% Perpendicular between core yarn running direction line and sheath yarn feed guide Distance: 18
cm Air pressure during fiber mixing: 5 kg / cm ² The false twist composite yarn obtained as described above has a fineness of 40.
It was 0 denier, and it became a thread suitable for overwinter fabrics.

The following embodiments can be carried out without departing from the spirit of the present invention. In the mixed fiber process,
Although the Taslan processing method has been used, a so-called interlace processing method may be used in which the Taslan processing method is changed and air is blown in a direction intersecting the traveling method of the yarns 1α and 1β.

The technical idea that can be understood from the above-described embodiment will be described. Mixing mechanisms 11 to 13 for performing air mixing of the first yarn 1α and the second yarn 1β, and the same yarn mixing mechanism 1
1 to 13 and a false twisting mechanism 17 and 18 for false twisting the third yarn 2 in a false twisting composite yarn manufacturing apparatus. An apparatus for producing a false twist composite yarn, which is provided with a false twist feed roller 14 for overfeeding the yarn to the twisting section K.

By using this device, it is possible to obtain a false-twisted composite yarn which is excellent in flat knitting and weaving properties, and which is suitable for a material for autumn and winter clothing and which is spun-like and has a sense of volume.

[0028]

EFFECTS OF THE INVENTION According to the present invention having the above construction, it is possible to obtain a false-twisted composite yarn which is excellent in flat knitting and weaving properties, and which is suitable for a material for autumn and winter clothing and which is spun-like and voluminous.

[Brief description of drawings]

FIG. 1A is an enlarged view of a false twist composite yarn, and FIG. 1B is a view schematically showing a single portion and a triple portion.

FIG. 2 is a diagram schematically showing an apparatus for producing false twist composite yarn.

FIG. 3 is a diagram schematically showing a conventional manufacturing apparatus.

[Explanation of symbols]

1 ... Mixed yarn (core yarn), 1α ... First yarn, 1β ... Second yarn, 2 ... Sheath yarn as third yarn, K ... Twisting area.

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Claims (3)

(57) [Claims] 1. A first yarn, which is a filament yarn, and a second yarn, which is also a filament yarn, are mixed by air, and a third yarn, which is a filament yarn, is provided in a twisting area of the mixed yarn. A method for producing a false-twisted composite yarn in which both are false-twisted by supplying a strip, wherein the mixed-fiber yarn is supplied to the twisting area with an overfeed rate of + 3% to + 20%. Method. 2. The overfeed rate of the first yarn is ± 0.
% To + 15%, the overfeed rate of the second yarn is set to + 5% to + 200%, and the overfeed rate of the second yarn is set to be higher than the overfeed rate of the first yarn. The method for producing a false twist composite yarn according to claim 1. 3. The method for producing a false twist composite yarn according to claim 1, wherein the third yarn is over-fed by at least 35% from the mixed yarn and supplied to the twisting area.