JPH081017B2 - Compound yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to composite yarns. More specifically, it relates to a composite yarn having a continuous yarn in the core and a short fiber component in the sheath.

Conventionally, as the core-sheath structure compound yarn technology, the front top roller and the front bottom shaft have been devised as a method of supplying the same or different roving yarns at different speeds respectively, or the front roller shape is a cone and different speeds. It is known how to supply it. Further, a method is well known in which two components, that is, a shrinkable fiber and a non-shrinkable fiber, are used to obtain a core-sheath structure, and a yarn having the structure is obtained by heat treatment.

However, these methods do not provide a two-layer composite yarn having a core-sheath structure with satisfactory coverage, and the equipment is complicated, and quality control, process control, and maintenance control are difficult, and stable production is expected. Was not possible.

The present inventors have arrived at the present invention as a result of intensive investigations aimed at improving such a conventional technique.

That is, an object of the present invention is to provide a composite yarn in which a continuous fiber yarn of a core portion is uniformly and firmly coated with a short fiber component.

The object of the present invention is to provide a composite yarn composed of a continuous yarn and a short fiber component, A. The continuous yarn at the central portion of the composite yarn, B. The mixed ratio of continuous yarn and short fiber component is 10:90 to 70:30, and at least the short fiber component in the outer layer is actually around the continuous yarn. It is wound in a twisted shape, and the continuous yarn at the center has a real twist in the same twist direction as the winding direction, and the single fibers constituting the short fiber component are arranged substantially parallel to the real twist direction. C. The composite yarn is characterized in that the coverage of the short fiber component constituting the outer layer portion is 80% or more.

In the present invention, filament yarns such as raw multifilament yarns, woolly textured yarns, and brilliant textured yarns can be used as continuous yarns. This is because the filament yarn, which has different properties from the short fibers that coat the outer layer,
This is because the composite yarn expresses preferable characteristics. The synthetic fiber filament yarn may be drawn yarn, semi-drawn yarn, or a mixture of drawn portion and semi-drawn portion or undrawn portion,
It can be appropriately used as desired. Needless to say, the material of the continuous yarn may be a known yarn made of natural fiber silk, semi-synthetic or synthetic fiber, or may be a yarn that has been crimped beforehand. The short fiber component is cotton,
Known short fibers composed of natural fibers typified by silk, wool (including animal hair), hemp, etc., semi-synthetic and synthetic fibers, and these fibers alone or in a blended form. The composite ratio of the continuous yarn and the short fiber component of the present invention is 10:90 to 90:10 (weight ratio), preferably 20:80 to 70:30 (weight ratio). The composite rate of either continuous yarn or short fiber component
If it is less than 10%, the balance becomes poor, which is not preferable.

Next, the composite yarn of the present invention will be described with reference to the drawings. 3 and 4 show a cross-sectional view and a side view of the composite yarn of the present invention, in which the continuous yarn 10 is arranged at the center of the composite yarn and the short fiber component 5 is arranged in the outer layer portion. Is there. The short fiber component 5 is wound around the continuous yarn 10 with a real twist, and the short fibers constituting the short fiber component 5 are arranged substantially parallel to the real twist direction. Further, the covering rate of the short fiber component 5 constituting the outer layer portion is formed to be 80% or more. The preferable value of the coverage is 90% or more, because the continuous yarn 10 of the core portion is completely covered, a cloth having a uniform color tone can be obtained after dyeing, and a high quality coating is obtained. This is because it can be a thread. 80% coverage
If it is less than 1, it is not preferable because unevenness increases for the reason.

The major feature of the composite yarn of the present invention is that the short fiber component of the outer layer portion is wound around the continuous yarn in a real twist shape, and the continuous yarn in the center portion has the same twist direction as the actual winding direction. It has a twist, and since the continuous yarn at the center has a twist in this way, the fibers that form the outer peripheral layer do not enter the central layer, and the two layers are clear and good. Different stratification can be achieved. Therefore, in combination with the high coverage (80% or more), the composite purpose of both components can be reliably achieved as intended. That is, in the fibers to form the outer periphery and the central layer,
When using each specific fiber, surround those fibers,
It is possible to sufficiently obtain the effect of being arranged in each of the central layers. In particular, in the composite yarn of the present invention, since the single fibers constituting the short fiber component of the outer layer portion are arranged substantially parallel to the actual twist direction, it is originally easy for the fibers to enter the central fiber layer. As described above, since the central continuous yarn has a twist, a clear layer differentiation of two layers can be obtained, and at the same time, the quality of the yarn, the product, and the quality are also extremely good. is there.

It should be noted that although the yarn of the present invention can obtain two distinct layers, it is easily separated from the center layer and the outer layer due to the distribution and arrangement of the fibers. This does not mean that the present invention system is a well integrated composite yarn.

Further, FIGS. 5 and 6 show a conventional composite yarn, and it is difficult to bring the continuous yarn 10 to the core portion completely, and it always comes out to the outer layer. Therefore, since the continuous yarn 10 and the short fiber component 5 are rather side-by-side composite, the continuous yarn is inevitably exposed in the outer layer portion,
I couldn't improve the quality.

Next, a method for manufacturing the composite yarn of the present invention will be described with reference to the drawings.

1 and 2 show an embodiment of the method for producing a composite yarn according to the present invention. First, roving 1 and guide 2
Supply to the back rollers 3, 3 ', and the back rollers 3, 3'
A desired draft is provided between the large diameter portion 7a of the front top roller and the front shaft 8 to form the short fiber fleece 5. On the other hand, the continuous yarn 10 is the small diameter part of the front top roller.
7b and the gripping portion of the second front top roller 9 are fed. Then, the short fiber fleece 5 is wound around the continuous yarn 10 and twisted. The twisting is to be a real twist. This is because, in the present invention, the coating is clean by applying the actual twist, and in practice, the actual twist is easy to use when the ring spinning machine is used.

The feeding speed of short fiber is 2-40 than the feeding speed of continuous yarn.
% To make things faster. By doing so, the fleece 5 is over-fed as compared with the continuous yarn,
It is coated while being wound evenly around the continuous yarn. 2%
If it is less than 100%, the uncovered rate of continuous yarn becomes high, which is not preferable
On the other hand, if the value exceeds 40%, the short fiber component in the coating portion may sag, which is not preferable. Such overfeed rate 2-40
The range of% can be adopted in the case of any continuous yarn such as ordinary raw multifilament, wooly processed yarn, burrier processed yarn, entangled yarn and steam jet crimped yarn.

Further explaining with reference to FIGS. 1 and 2, 4 and 4'are an apron, 6 is a collector, 11 is a tension adjusting device for continuous yarns, 12 is a yarn guide, and 13 is a second front top roller 9. Pressurizing device, 17 for composite yarn, 14 for snare guide, 15
Is a traveler guide and 16 is a take-up bobbin. The second
In the figure, the nip mechanism that supplies the continuous yarn to the center side and supplies the short fiber bundle fleece to both sides is shown, but the specific arrangement of the device is not necessarily limited to this, and is illustrated. The nip mechanism, which is the opposite of the one in which the short fiber bundle fleece is supplied to the side closer to the center of the drawing and continuous yarns are supplied to both sides, may also be used. May be always the same, and further, a nip mechanism in which the individual weights are independently provided may be used.

Furthermore, in this method, the unification point of the continuous yarn 10 and the short fiber bundle fleece 5 is 3 to more than the nip point of the short fiber bundle fleece.
About 20 mm is preferable. At this level, the coatability is improved.

Next, the device will be described. The apparatus for producing the composite yarn according to the present invention is as described in the above-mentioned description of FIGS. 1 and 2. That is, the front top roller of the spinning machine having the draft mechanism is a stepped roller of the large diameter portion 7a and the small diameter portion 7b, each nip point is provided, and the fleece passing through the draft portion is formed of the large diameter portion 7a and the front shaft 8. The continuous right yarn 10 is arranged to be supplied through the nip point, while the continuous right yarn 10 is supplied through the nip point between the small diameter portion 7b and the second front top roller 9. The circumference ratio of the large diameter portion 7a and the small diameter portion 7b of the front top roller is preferably 2 to 40% larger in the large diameter portion than in the small diameter portion. The roller width of each of the large diameter portion 7a and the small diameter portion 7b is preferably at least 5 mm or more. This is because even if the yarn path is slightly deviated, it is difficult to deviate from the nip point.

Further, a composite yarn having a peculiar functionality such as antistatic property and water absorption property to the core component can be obtained.

Further, when the principle of the present invention is utilized, a multi-layered yarn having two or more layers, for example, when the stepped roller has three stages, a three-layered structure yarn and a four-staged structure yield a four-layered structure yarn.

In the present invention, the coverage is obtained as follows.

That is, an enlarged photograph of the yarn side surface is taken at least for a composite yarn length of 0.5 m (the number of images taken per 0.5 m of the composite yarn length, the enlargement magnification may be any one that is easy to measure), and the photograph The total surface area of the yarn and the covering area of the short fiber component are determined and obtained, and the coverage (%) = {(covering area of the short fiber component) × 100} / (total surface area of the yarn) is calculated from the values. It is what you want. Then, this is performed for five yarn portions, and the average value of these is used as the coverage of the short fiber component in the yarn.

 Next, examples will be described.

Example 1 100D-48fil Woolly Polyester Thread Made of Polyethylene Terephthalate and Anti-Pill Polyester Staple
A composite spun yarn was obtained using 3d × 89 mmV (V: variable cut) and the apparatus shown in FIGS. 1 and 2. The supply rate of the short fiber bundle fleece is 7% of the supply rate of the filament.
Over-feeded and spun yarn count Nm = 1/30 (Nm: metric count).

Furthermore, the twist coefficient T: twist number (T / m), K: twist coefficient, Nm: metric number. The mixing ratio of filament and short fiber is 33.
It was 3: 66.7 (weight ratio). The short fibers constituting the short fibers were substantially parallel to the actual burning direction of the short fiber bundle. This single yarn is processed as twin yarn (the twist direction is the reverse direction of the bottom twist, and the twist count is 95% of the bottom twist count). A twill fabric was obtained. The woven fabric was excellent in pill resistance (5-4 grade in 10 hours by the ICI method), had good surface quality, and was rich in elasticity, elasticity and elasticity, and was a wool-like product having appropriate elasticity. Further, after dyeing, the coverage of the polyester table as the outer layer component was measured to find a good value of about 99%.

Example 2 Using the same equipment as in Example 1, filament component: 75D
-24fil Woolly polyester yarn (26% by weight), short fiber component: (1) Dispersible dyeable anti-pill polyester raw cotton 3d x 76mm
(37% by weight), (2) Cationic dyeable anti-pill polyester raw cotton 4d × 76mm (37% by weight), using 2 components, overfeeding 5% of short fiber component, Nm = 1/32 composite I got a thread.

The twist condition was K = 95. This composite yarn had a coverage of 98%, and the staple single fibers were substantially parallel to the twist direction of the short fiber bundle. This compound yarn is processed by twinning (the direction opposite to the lower twist direction is 100% of the lower twist number). I got a twill. The product quality is excellent as a heavy-duty autumn / winter fabric, and the dyeing with a khaotin dye resulted in good marbling. Also, anti-pill property is ICI method, 10hr
It was very good at 5-4 grade. It has excellent wash-and-wear characteristics, and is a product that has plenty of waist, tension, and heat retention.

Example 3 110D-comprising polyamide under the same conditions as in Example 1
An anti-pill type 3d x 89V (7
0% by weight), merino # 58, and 30% by weight of roving as a short fiber component. The short fiber fleece and the filament are combined in a speed relationship such that the short fiber fleece becomes 10% overfeed. , Nm = 1/24 was spun out. The twist coefficient at this time was K = 70. The mixing ratio of filament component and short fiber component is 29.3% by weight and 70.7% by weight, respectively.
Met. The coverage of the obtained composite yarn was 94%. When socks were made from the composite yarn with a 16 G sock knitting machine, the stitches passed and the texture was good. Moreover, we obtained a product with bulkiness and heat retention.

Example 4 Polyethylene terephthalate 15 was prepared in the same manner as in Example 1.
0D-30fil, using a roving yarn consisting of wooly yarn and rice cotton card sliver, the feed rate of rice cotton fleece was over-fed by 7% over the wooly yarn and coalesced to obtain Nec = 7S Spun out. The twist condition is T is the number of twists (T / inch) and K is the twist coefficient. The mixing ratio of the spun yarn was 19.7% for the filament component and 80.3% for the short fiber component. The coverage of this composite yarn was 99.5%. The single fibers of rice cotton were almost aligned in the twist direction of the short fiber bundle. The yarn obtained in this example I made twill denim. The obtained product was a denim exhibiting a feeling of 100% cotton and having appropriate stretchability.

Example 5 A composite yarn was spun under the same conditions as in Example 4, except that the same material as in Example 4 was used and the overfeed rate of the rice cotton fleece was set to 2.3%. The coverage of the resulting composite yarn is
83%, and 17% exposed the filament yarn in the core. The mixing ratios of filaments and short fibers were 19.8% by weight and 80.2% by weight, respectively. Although this yarn was inferior to the yarn of Example 4, it was preferable to the conventional composite yarn.

Comparative Example 1 A composite yarn was spun under the same conditions as in Example 5 except that the overfeed rate of the rice cotton fleece was changed to 1.8% in Example 5. The obtained composite yarn had a coverage of 78%, which was about the same as the conventional product.

The mixing ratios of filaments and short fibers were 19.9% by weight and 80.1% by weight, respectively.

On the other hand, when the overfeed rate of the rice cotton fleece was spun at 41%, only a composite yarn having an extremely poor sagging coverage was obtained.

The mixing ratios of filaments and short fibers were 19.8% by weight and 80.2% by weight, respectively.

Comparative Example 2 The front top roller of only the roller 7a was used without using the stepped roller shown in FIGS. 1 and 2, while the filament was supplied with tension on the upstream side of the front top roller 7a. The materials and the like were the same as in Example 5. The obtained composite yarn was as shown in FIGS. 5 and 6, and the coverage was 77%.

The mixing ratios of filaments and short fibers were 19.8% by weight and 80.2% by weight, respectively.

[Brief description of drawings]

FIG. 1 is a side view showing one embodiment of a composite yarn producing apparatus according to the present invention, FIG. 2 is a front view of a united portion of FIG. 1,
FIG. 3 is an enlarged view of a cross-sectional model of the composite yarn according to the present invention, and FIG. 4 is an enlarged view of a side model of FIG. FIG. 5 is a side model enlarged view of a conventional core spun yarn, and FIG. 6 is a side view of FIG. 1: roving, 5: short fiber component, 7a: large diameter part of front top roller, 7b: small diameter part of front top roller, 8: front bottom shaft, 9: second front top roller, 10:
Filament, 11: tension device, 13: pressure device, 15: traveler, 17: composite yarn

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-55-12820 (JP, A) JP-B-50-31221 (JP, B1)

Claims (1)

[Claims] 1. A composite yarn comprising a continuous yarn and a short fiber component, A. The continuous yarn is at the center of the composite yarn, and the short fiber component at the outer periphery is 2 more than the continuous yarn at the center. -40% overfeed, B. The mixing ratio of continuous yarn and short fiber component is 10:90 to 70:30, and at least the short fiber component in the outer layer is actually twisted around the continuous yarn. And the continuous yarn at the center has a real twist in the same twist direction as the winding direction, and the single fibers constituting the short fiber component are arranged substantially parallel to the real twist direction. C. A composite yarn characterized in that the coverage of the short fiber component constituting the outer layer portion is 80% or more.