JPH1181072A - Composite spun yarn and production thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a composite spun yarn correcting the cold feeling and a defect in its luster of a filament fiber, excellent in see-through preventing property, and having a dry feeling and a warm feeling by making a composite of a filament fiber with a staple fiber in a specific shape. SOLUTION: This method for producing a composite spun yarn is provided by feeding a filament yarn (a) to front rollers 3, 4 through a feed roller 8 and a vibrating guide 9, and also a crude yarn 6 of a staple fiber (b) to the front rollers 3, 4 through a back roller 1 and a Casablanca type second roller 2 to form a staple fiber bundle having a desired thickness. By simultaneously winding both of the fibers (a) and (b), the composite spun yarn (c) is wound to a bobbin 7. By changing the ratio of the feeding amount of the filament fiber to that of the staple fiber with the vibrating guide 7, a plurality of winding shapes are formed along the yarn axis direction of the composite spun yarn (c).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a composite spun yarn comprising a filament fiber and a staple fiber. More specifically, the present invention relates to a composite spun yarn in which different portions of a composite form of a filament fiber and a staple fiber exist in a direction extending along the yarn axis direction of the composite spun yarn.

[0002]

2. Description of the Related Art Conventionally, spun yarns made of staple fibers or continuous yarns made of filament fibers have been used as yarns used for clothing fabrics.

[0003] A spun yarn made of staple fibers is a yarn having a bulky and soft feel, but has a relatively low tensile strength, a disadvantage of poor uniformity such as unevenness in yarn thickness and large unevenness in strength, and fluff. In the case of fabrics with a large amount of pilling, there is a disadvantage that pilling is likely to occur.

[0004] In addition, continuous yarns made of filament fibers are excellent in strength and uniformity, but are insufficient in bulkiness in straight filament fibers that have not been subjected to yarn processing. Also,
It has drawbacks in texture and appearance, such as paper-like, cold feel, and lack of luster.

[0005] A spun yarn comprising these staple fibers,
As a yarn forming method for compensating for the drawbacks of continuous yarns composed of filament fibers, there is a composite spun yarn in which a filament fiber and a staple fiber are combined to form a yarn.
7-11248, JP-B-62-20292, JP-A-1-246435, JP-A-7-907
A number of proposals have been made in the past, including Japanese Patent Publication No. 40 and the like.

[0006] A typical yarn of a composite spun yarn in which a filament fiber and a staple fiber are combined to form a thread is a so-called filament fiber core yarn in which a filament fiber is used as a core and a staple fiber is used as a sheath. Although unevenness of yarn thickness and unevenness of strength, etc. are improved, filament fibers and staple fibers have a defect in squiggle resistance.The appearance is a spun yarn made of staple fibers, but the core yarn is used. There is also a problem in that the disadvantages that pilling is liable to occur due to the presence of the compound tend to increase.

Contrary to the above, in a composite spun yarn having a so-called filament fiber cover yarn in which a filament fiber is formed in a sheath portion and a staple fiber is formed in a core portion, similarly to the core yarn of the filament fiber, Although the uniformity such as uneven thickness and strong unevenness of the yarn is improved, the filament fibers are unidirectionally twisted and arranged neatly in a tape or ribbon shape. This is problematic in that it is too glossy without any quality and that it is transparent when used as a knitted fabric. In addition, since the surface of the composite spun yarn having a high filament coverage is a mirror surface, it has a slimy feeling and a cool feeling, and cannot be applied to a field where a dry feeling and a warm feeling are required.

[0008] Further, both technologies have insufficient fuzzing effect of staple fibers, and have problems in terms of processability and product quality.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to improve the cold feel and the productless luster of filament fibers in a composite spun yarn composed of filament fibers and staple fibers. In addition, when it is made into a knitted fabric, it has an excellent sheer-prevention property, has a dry feeling and a warm feeling, and has a unique pattern when dyeing filament fibers and staple fibers in different colors. And a method for producing the same.

[0010]

Means for Solving the Problems The composite spun yarn of the present invention has the following constitution in order to solve the above-mentioned problems.

That is, it is a composite spun yarn in which a filament fiber and a staple fiber are twisted by real twist, and the composite form of the filament fiber and the staple fiber is such that the composite spun yarn extends in the direction in which it extends along the yarn axis direction. A composite spun yarn characterized by being present with a periodicity in a plurality of different composite forms.

Further, the method for producing a composite spun yarn of the present invention has the following configuration.

That is, this is a method for producing a composite spun yarn in which a filament fiber and a staple fiber are sent out and twisted from a pair of upper and lower front rollers, and when a staple fiber bundle is drafted and spun, the filament fiber is supplied immediately before being supplied to the front roller. This is a method for producing a composite spun yarn, characterized in that the fiber is vibrated in a direction different from the direction in which the front roller is sent out, spun together with the staple fiber, and twisted.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.

The composite spun yarn of the present invention is a composite spun yarn in which a filament fiber and a staple fiber are twisted by real twist, and the composite form of the filament fiber and the staple fiber is along the yarn axis direction of the composite spun yarn. A composite spun yarn characterized by being present in two or more different composite forms with a period in the extending direction.

FIGS. 2 to 7 are schematic diagrams schematically showing the cross section (A) and the side surface (B) of the composite form of the composite spun yarn of the present invention, wherein a is a filament fiber, and b is a staple fiber. ing.

The two or more different composite forms include:
(A) Form in which the filament fiber a is arranged in the outer layer portion of the staple fiber b and twisted (FIGS. 2A and 2B)
((A) is a cross-sectional view, (B) is a side view), and (b) a mode in which filament fibers a are arranged in the inner layer of staple fibers b and twisted (FIGS. 3A and 3B) ((A) is a cross-sectional view, (B) is a side view), and (C) the staple fiber b is arranged in the outer layer portion of the filament fiber a and twisted (FIGS. 4A and 4B) ((A) is a cross-sectional view, (B) is a side view) and (d) a mode in which the twist angle α of the filament fiber a is twisted at a twist angle larger than the twist angle β of the staple fiber b (FIG. 5 ( (A), (B)) ((A) is a cross-sectional view, (B) is a side view), and (e) the filament fiber a is twisted at a twist angle α substantially equal to the twist angle β of the staple fiber b. (A) is a cross-sectional view, (B) is a side view), and (F) the twist angle β of the staple fiber b is the twist angle of the filament fiber a. Twisting at a twist angle larger than the degree α (FIGS. 7A and 7B) ((A) is a sectional view, (B)
Is a side view).

The fibers constituting the filament fibers used in the present invention include the properties of the fibers, that is, the fineness of the single yarn, the cross-sectional shape, the presence or absence of crimps (whether physically applied or structurally applied) and the like. There are no restrictions. That is, as the filament fiber, a plurality of synthetic fibers such as polyester and polyamide or a cellulose-based semi-synthetic fiber can be used.

There are no restrictions on the physical properties of the filament fibers, such as the strength and elongation and the shrinkage, and the dyeability.

On the other hand, the staple fiber used in the present invention is not particularly limited as long as it is subjected to a usual spinning process. Any of 100% natural fiber, 100% synthetic fiber, and a blend of natural fiber and synthetic fiber or semi-synthetic fiber may be used. Of course,
Those using functional fibers or the like can also be used.

Furthermore, there is no restriction on the combination of the filament fiber and the staple fiber.

In the fabric using the composite spun yarn of the present invention, a characteristic fabric can be obtained by appropriately setting the fineness of the filament fiber and the staple fiber in accordance with the composite form of the filament fiber and the staple fiber. . For example, the staple fiber / filament fiber (for example, staple fiber 2d / filament fiber 1d) having a relatively large single-fiber fineness and the softness and the smoothness are expressed by the fabric that exhibits the firmness and the waist and resilience of the fabric. It is considered that the filament fibers / staple fibers (for example, staple fibers 0.4d / filament fibers 2d) having a relatively small single-filament fineness play respective roles.

Next, a method for producing the composite spun yarn of the present invention will be described. In order to obtain the composite spun yarn of the present invention, in a general ring spinning method, a staple fiber bundle is drafted by a draft roller, In the method of twisting at the same time as sending out and further winding into a bobbin to make a spun yarn, the filament fiber is vibrated by a vibration guide etc. in a direction different from the sending direction of the front roller just before it is supplied to the front roller, and the staple fiber and the filament are It can be obtained by sending fibers together from a front roller.

The operating conditions such as the number of revolutions, draft ratio, and number of twists of the ring spinning machine at the time of production may be the same as those of ordinary spun yarn, but may be appropriately set according to the application.
In addition, the frequency of the vibration guide is the same as the cycle of the composite form, so it is good to set appropriately according to the product quality and application, but to improve the operability of the ring spinning machine, the average fiber length of the staple fiber is not more than It is preferable to set the period.

The present invention will be described below with reference to the drawings.

FIG. 1 is a process chart showing one embodiment of the method for producing a composite spun yarn according to the present invention. In FIG. 1, a roving 6 composed of staple fibers b includes a back roller 1, a second roller 2 of the Casablanca system, a front roller 3,
After passing through step 4, a staple fiber bundle having a desired thickness is obtained. On the other hand, the filament fiber a is pulled out from the package 5 by a pair of feed rollers 8 under a constant tension by a tension compensator, and is supplied to the front rollers 3 and 4 through a vibration guide 9. Next, both the fibers are simultaneously wound and wound on a bobbin 7 as a composite spun yarn c.

FIGS. 8 and 9 show the relative positions of the filament fibers and the staple fibers in the fiber bundle nip portion of the front roller. FIG. 8 is a side view, and FIG. 9 is a top view. In FIG. 9, d is the center line of the staple fiber bundle, and e and f are the positions of the left and right ends in the vibration width of the filament fiber.

In the case where the supply speed of the filament fiber is higher than the supply speed of the staple fiber, (A) when the filament fiber moves from d to e and from d to f, at least the filament fiber is disposed in the inner layer portion of the staple fiber. (FIG. 3), and a form in which the twist angle of the filament fibers is at least substantially equal to the twist angle of the staple fibers (FIG. 6). When moving in a direction away from the road center portion d, the tension of the filament fiber is increased, so that the filament fiber supplied to the front roller is shortened.

(B) Further, when the filament fiber moves from e to d and from f to d, the supply amount of the filament fiber is larger than that of the staple fiber, contrary to (A). (FIG. 2) and a mode in which at least the filament fiber is twisted at a twist angle larger than the staple fiber twist angle (FIG. 5).

In the case where the supply speed of the filament fiber is the same as the supply speed of the staple fiber, or in the case of the depolarized feed in which the filament fiber only passes through the tension device, (C) the filament fiber moves from d to e and from d to f At this time, at least the staple fiber is arranged in the outer layer portion of the filament fiber and twisted (FIG. 4), and at least the staple fiber is twisted at a twist angle larger than the filament fiber twist angle. When the filament fibers move from e to d and from f to d in the form (FIG. 7), at least the filament fibers are arranged in the inner layer of the staple fiber and twisted (FIG. 3). The fiber is twisted at a twist angle substantially equal to the twist angle of the staple fiber (FIG. 6).

That is, when the supply amount of the filament fiber to the staple fiber fluctuates due to the vibration guide, the winding form becomes different.

Hereinafter, the present invention will be described in more detail based on examples.

[0033]

【Example】

(Example 1) 1. Made of polyethylene terephthalate
5 denier, 38mm length staple 2
A roving yarn of 10 g / 30 yds is drafted, and a staple fiber bundle is sent out from a front roller. And the yarn is guided to a vibration guide, sent out from the front roller simultaneously with the staple fiber bundle from between the front roller and the second roller, and twisted at a twist number of 712 T / m in the Z direction.
A composite spun yarn of S was obtained. The vibration frequency of the vibration guide is 400 times / minute, the vibration width of the filament fiber in the fiber bundle nip portion of the front roller is 12 mm, and the spindle rotation speed is 1
0000r. p. m. Set to.

[0034] The yarn form of the obtained composite spun yarn includes a portion including a form in which at least the filament fibers are arranged in the outer layer portion of the staple fibers and twisted, and at least the filament fibers are arranged in the inner layer portion of the staple fibers. In the portion including the twisted configuration, two different composite configurations were present at a pitch of about 35 mm periodically in the yarn length direction.

The composite spun yarn was used to obtain a warp of 88 yarns /
When weaving a plain fabric of 72 inches by 72 inches, the resulting fabric has a sheer-proofing effect, and has improved cold feel and unparalleled luster of filament fibers, and has a dry feeling and a warm feeling. In addition, the fabric had soft touch of fine filament fibers, mild and deep gloss, and exhibited a marbling pattern in surface quality.

The spinning of the composite spun yarn at the time of spinning was 1.3 / 1000 sp. At times, spinning was good.

(Example 2) A 1.0 denier, 38 mm length staple made of polyethylene terephthalate was used as a raw material, and a 180 glen / 30 yds roving was drafted, and a staple fiber bundle was sent out from a front roller.
On the other hand, a 30-denier 12-filament filament fiber made of polyethylene terephthalate was supplied with a feeding tension of 30 g.
/ D, supplied to the vibration guide, sent out from the front roller simultaneously with the staple fiber bundle from between the front roller and the second roller, and the number of twists in the Z direction is 833.
Twisting was performed at T / m to obtain a composite spun yarn having a cotton count of 40S. The vibration frequency of the vibration guide is 400 times / minute, and the vibration width of the filament fiber in the fiber bundle nip portion of the front roller is 12
mm, the spindle rotation speed is 10,000 r. p. m. Set to.

The yarn form of the obtained composite spun yarn includes a portion including a form in which at least staple fibers are arranged and twisted in an outer layer portion of the filament fiber, and a structure in which at least the filament fiber is arranged in an inner layer portion of the staple fiber. In the portion including the twisted configuration, two different composite configurations were present at a pitch of about 30 mm periodically in the yarn length direction.

The composite spun yarn had a warp of 120 yarns /
When an inch-wide, 85-weft / inch broad was made, it had a soft touch with fine staple fiber, a silky astringent luster and a sheer-proofing effect, and also had excellent repellency and drapability. Moreover, an elegant marbled pattern appeared on the surface of the fabric, and a high quality fabric was obtained. In addition, the process passability was also very good.

Example 3 Egyptian cotton (comb cotton for 80S) 160 geren / 30 yds roving yarn was drafted, staple fiber bundle was sent out from the front roller, and 30 denier 12 filament filament fiber made of polyethylene terephthalate was supplied. The yarn tension is set at 30 g / d, the yarn is guided to a vibration guide, and sent out from the front roller at the same time as the staple fiber bundle from between the front roller and the second roller, and the number of twists in the Z direction is 980 T / m.
To give a composite spun yarn of cotton count 60S. The vibration frequency of the vibration guide is 400 times / minute, the vibration width of the filament fibers in the fiber bundle nip portion of the front roller is 12 mm,
Spindle speed is 8000r. p. m. Set to.

The yarn form of the obtained composite spun yarn includes a portion including a form in which at least staple fibers are arranged and twisted in an outer layer portion of the filament fiber, and at least a filament fiber is arranged in an inner layer portion of the staple fiber. In the portion including the twisted configuration, two different composite configurations were present at a pitch of about 20 mm periodically in the yarn length direction.

The composite spun yarn is passed through 160 / inch, weft 12
When woven with a plain weave of 0 / inch and dyed, it has soft touch by fine filament fiber, mild luster and anti-transparent effect, large anti-pill effect, and even better surface quality. It had a drape property.
In addition, the process passability was also very good.

(Example 4) A roving yarn of 160 denier / 30 yds made from staples of 1.5 denier and 38 mm length made of polyethylene terephthalate was drafted, and a staple fiber bundle was sent out from a front roller.
On the other hand, a filament fiber of 30 denier and 72 filaments made of polyethylene terephthalate was supplied with a yarn feeding tension of 0.2.
g / d, the overfeed rate is set to 2.0%, the yarn is guided to a vibration guide, and sent out from the front roller at the same time as the staple fiber bundle from between the front roller and the second roller, and the number of twists in the Z direction is 980T. / M to obtain a composite spun yarn of cotton count 60S. The vibration frequency of the vibration guide is 400 times / minute, the vibration width of the filament fibers in the fiber bundle nip portion of the front roller is 12 mm, and the spindle rotation speed is 8000 rpm. p. m. Set to.

The yarn form of the obtained composite spun yarn is such that at least a portion including a form in which staple fibers are arranged in an outer layer portion of the filament fiber and twisted, and at least a filament fiber is arranged in an inner layer portion of the staple fiber. In the portion including the twisted configuration, two different composite configurations were present at a pitch of about 20 mm periodically in the yarn length direction.

The composite spun yarn was set on a 28 gauge / inch tricot knitting machine to form a knitted fabric of 100 g / m ² , and the knitted fabric obtained had a cold feel and lack of quality of filament fibers. Improved gloss, dry feeling,
The fabric quality was good as a shirt and blouse fabric having a warm feeling, soft touch of fine filament fibers, and mild and deep luster.

The spinning of the composite spun yarn at the time of spinning was 2.1 yarns / 1000 sp. In some cases, spinning was good, and even in tricot knitting, which is generally said to be impossible to knit spun yarn, there was no problem in processability.

[0047]

According to the present invention, it is possible to improve the cold feeling of the filament fiber and the glossiness of the product, and to provide a knitted fabric which has excellent sheer-preventing properties and has a dry feeling and a warm feeling. . Furthermore, it has a high-grade marbled fabric surface quality. In addition, the operability of the ring spinning machine can be greatly improved by vibrating the filament fibers so as to have a composite form period equal to or less than the fiber length of the staple fibers.

Furthermore, by having the uniformity of the filament fiber, the process fiber can exhibit much better process passability at the time of fabric formation than the conventional spun yarn.

[Brief description of the drawings]

FIG. 1 is a schematic view showing one example of a composite spun yarn manufacturing apparatus of the present invention.

FIG. 2 is a schematic cross-sectional view (A) and a schematic cross-sectional side view (B) schematically showing an example of the composite spun yarn of the present invention.

FIG. 3 is a schematic cross-sectional view (A) and a schematic cross-sectional side view (B) schematically showing another example of the composite spun yarn of the present invention.

FIG. 4 is a schematic cross-sectional view (A) and a schematic cross-sectional side view (B) schematically showing still another example of the composite spun yarn of the present invention.

FIG. 5 is a schematic cross-sectional view (A) and a schematic cross-sectional side view (B) schematically showing still another example of the composite spun yarn of the present invention.

FIG. 6 is a schematic cross-sectional view (A) and a schematic cross-sectional side view (B) schematically showing still another example of the composite spun yarn of the present invention.

FIG. 7 is a schematic cross-sectional view (A) and a schematic horizontal side view (B) schematically showing still another example of the composite spun yarn of the present invention.

FIG. 8 is a schematic side view showing an example of a main part of a composite spun yarn manufacturing apparatus of the present invention.

FIG. 9 is a schematic top view showing an example of a main part of a composite spun yarn manufacturing apparatus of the present invention.

[Explanation of symbols]

 1: a pair of back rollers 2: a pair of second rollers 3: a front top roller 4: a front bottom roller 5: a filament fiber bobbin 6: a staple fiber bundle bobbin 7: a composite spun yarn bobbin 8: a pair of filament fiber feed rollers 9: vibration Guide a: Filament fiber b: Staple fiber bundle c: Composite spun yarn of the present invention d: Center line of staple fiber bundle supply e: Left end of filament fiber vibration width f: Right end of filament fiber vibration width α: Filament fiber twist angle β: Twist angle of staple fiber

Claims (11)

[Claims] 1. A composite spun yarn in which a filament fiber and a staple fiber are twisted by real twist, wherein a composite form of the filament fiber and the staple fiber extends in a direction extending along a yarn axis direction of the composite spun yarn. 2. A composite spun yarn which is present in two or more different composite forms. 2. A staple fiber in which at least two filaments are arranged in an outer layer portion of a staple fiber and twisted, and at least a filament fiber is arranged in an inner layer portion of the staple fiber. The composite spun yarn according to claim 1, wherein the composite spun yarn is a portion including a form formed by twisting. 3. A part including at least two different composite forms including a form in which staple fibers are arranged and twisted in an outer layer portion of a filament fiber, and at least a filament fiber is arranged in an inner layer portion of a staple fiber. The composite spun yarn according to claim 1, wherein the composite spun yarn is a portion including a form formed by twisting. 4. A part including two or more different composite forms wherein the twist angle of the filament fiber is at least a twist angle larger than the twist angle of the staple fiber, and at least the twist angle of the filament fiber is 2. The composite spun yarn according to claim 1, wherein the portion includes a form in which the staple fiber is twisted at substantially the same twist angle as the staple fiber. 5. A portion including at least two different composite forms including a form in which the staple fiber is twisted at a twist angle larger than the filament fiber twist angle, and at least a filament fiber twist angle. 2. The composite spun yarn according to claim 1, wherein the portion includes a form in which the staple fiber is twisted at substantially the same twist angle as the staple fiber. 6. The composite spun yarn according to claim 1, wherein the length of one of the two or more different composite forms is shorter than the average length of the staple fibers. 7. A method for producing a composite spun yarn in which a filament fiber and a staple fiber are sent out from a pair of upper and lower front rollers and twisted, and when a staple fiber bundle is drafted and spun, immediately before the staple fiber bundle is supplied to the front roller. A method for producing a composite spun yarn, wherein a fiber is vibrated in a direction different from a sending direction of a front roller, and is spun at the same time as a staple fiber and twisted. 8. The multi-component spinning according to claim 7, wherein the vibration width of the filament fiber is smaller than the width of the front roller and larger than the supply width of the staple fiber bundle in the fiber nip portion of the pair of upper and lower front rollers. Manufacturing method of yarn. 9. The method for producing a composite spun yarn according to claim 7, wherein a vibration width of the filament fiber intersects a supply width of the staple fiber bundle. 10. The method according to claim 7, wherein the supply speed of the filament fibers is higher than the supply speed of the staple fibers.
10. The method for producing a composite spun yarn according to any one of claims 9 to 9. 11. The method according to claim 7, wherein the supply speed of the filament fibers is lower than the supply speed of the staple fibers.
10. The method for producing a composite spun yarn according to any one of claims 9 to 9.