JPH01246435A - Composite spun yarn - Google Patents

Abstract

PURPOSE:To obtain a composite spun yarn having emphasized spun touch and excellent abrasion resistance and uniformity and capable of imparting soft feeling rich in body and drape, by making an inner layer of the yarn to have a structure composed of filament fibers and staple fibers dispersed and mixed with each other. CONSTITUTION:The objective composite spun yarn is composed of an inner layer consisting of filament fibers B (e.g., fiber of polyethylene terephthalate) and staple fibers A (e.g., cotton fibers) dispersed and mixed with each other and an outer layer containing 65wt.% of the staple fiber A. The content of the staple fiber A in the whole composite spun yarn is 40-90wt.%.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a composite spun yarn for clothing comprising filament fibers and staple fibers, and more specifically, the present invention relates to a composite spun yarn for clothing consisting of filament fibers and staple fibers. The present invention relates to a composite spun yarn, which has an inner layer having a structure in which filament fibers and staple fibers are dispersed and mixed, which emphasizes spun touch and has excellent abrasion resistance.

(Prior Art) Conventionally, as yarns used for woven or knitted fabrics for clothing, there are spun yarns made of staple fibers or yarns made of continuous filament fibers.

The former yarn is bulky and gives a soft texture, but it has the disadvantage of poor uniformity, such as large yarn unevenness and strength unevenness.

In addition, although the latter has excellent strength and uniformity, it cannot give a bulky effect with straight filament yarns, and there are also textured yarns that undergo bulk processing such as crimping. The fabric obtained by this method has drawbacks such as poor snag resistance, metallic luster, and strong waxy texture.

Many so-called composite yarns, which are a combination of staple fibers and filament fibers, have been proposed as a means to compensate for the drawbacks of both. A typical yarn is a core yarn in which staple fibers constitute the sheath and filament fibers constitute the core, but although it improves strength and uniformity, the entanglement of stable fibers impairs abrasion resistance (, It has the disadvantage that it easily separates from the filament fibers, that is, it easily comes off the sheath.

On the other hand, there is a filament cover type composite yarn in which the core is a stable fiber and filament fibers are wrapped around it, but like the core yarn, the strength and uniformity are improved, but the outer layer of the yarn is Since it is a filament fiber, the waxy feel peculiar to the filament is emphasized, and it also has the disadvantage that it is tightly tied to the filament yarn, the number of fuzz is drastically reduced, and the texture becomes hard.

Furthermore, as seen in Japanese Patent Publication No. 47-11248, a mixed fiber composite yarn has been proposed in which multifilament yarns are opened and then overlapped with a drafted stable group to uniformly mix the fibers. The composite yarn is strong, has good uniformity, and has improved abrasion resistance, but the outer layer of the yarn contains many filament fibers and has less fuzz ( This reduces the span touch, which is particularly unfavorable in response to recent consumer preferences for spans, and further improvements have been desired.

(Problems to be Solved by the Invention) The present invention attempts to solve the above-mentioned drawbacks, and its objective is to express the characteristics of stable fibers in the outer layer of the yarn, and to express the characteristics of stable fibers in the inner layer of the yarn. Composite spinning that disperses and mixes stable fibers, improves the entanglement of both fibers, and gives a strong spun touch, excellent uniformity, good abrasion resistance, stiffness, and a soft texture with plenty of tension. It is an attempt to provide a thread.

(Means for Solving the Problems) The present invention takes the following means to solve the problems described above. That is, the present invention provides a composite spun yarn consisting of filament fibers and stable fibers, in which the filament fibers and the stable fibers are mainly dispersed and mixed in the inner layer of the composite spun yarn, and the inner layer is surrounded by In the outer layer, 65 of the fibers constituting the outer layer
% or more by weight is stable fiber, and the stable fiber is 40 to 93% by weight in the composite spun yarn.
It is a composite spun yarn characterized by containing:

A cross-sectional view of the composite spun yarn of the present invention is shown in FIG.

In FIG. 1, A indicates stable fibers and B indicates filament fibers, and the outer layer of the composite spun yarn is entirely or mostly composed of stable fibers A, and the inner layer is composed of filament fibers B and stable fibers. It has a structure in which A is dispersed and mixed. Further, both of the fibers are actually twisted and bundled. In addition, the twist coefficient is based on the English cotton count Ne.
, the number of twists T (per inch) is expressed as T=, ρ1t'', and K is preferably 2.5 to 4.5.

In the present invention, the composition ratio of the stable fibers A and filament fibers is such that the stable fibers are 40% or more and 93% or more.
It is necessary that the amount is below % by weight.

If the stable fiber content is less than 40% by weight, it will be difficult to express the bulky and soft texture of spun yarn.
This is because if the amount exceeds % by weight, the strength and uniformity of the filament fibers will be reduced, and the mutually complementary effect will no longer be exhibited.

In addition, from this meaning, 50 to 93 weight% is preferable.

Further, the outer layer of the composite yarn of the present invention needs to be composed of stable fibers at least 65% by weight, preferably 70% by weight or more. The stable fiber is 65
This is because if the amount is less than % by weight, the soft feel of the spun yarn will not be sufficiently exhibited.

The composition ratio of the outer layer fibers referred to herein is the value expressed by the TfX amount ratio of the stable fibers and filament fibers of the fibers located in the outer layer of the yarn cross section when the yarn cross section is taken.

Furthermore, the composite spun yarn of the present invention requires that the inner layer has a structure in which filament fibers and stable fibers are dispersed and mixed, that is, a mixed fiber structure. In other words, it is necessary to have a structure in which filament fibers and stable fibers are mixed, rather than having filament fibers concentrated in the core like conventional core yarns. This is because the entanglement of the stable fibers and filament fibers is improved by the presence of the fibers, and if they are not dispersed and mixed, the abrasion resistance will be significantly deteriorated.

The filament fibers used in the present invention include synthetic fibers such as polyester, polyamide, and polyacrylic fibers, as well as filament fibers commonly used for clothing, such as semi-synthetic fibers such as Promix. In order to obtain a yarn with a certain texture, it is preferable to use polyester fibers with high strength and high modulus.

Further, it is desirable that the number of filaments is six or more in order to strengthen the entanglement with the stable fibers.

On the other hand, the stable fiber is not particularly limited as long as it can be subjected to a normal spinning process, but in particular in the present invention, all or part of the stable fiber is made of natural fibers such as cotton or wool. If fiber is used, it is preferable because it can provide water absorbency and heat retention, and can provide a yarn with excellent comfort.

To obtain the composite spun yarn of the present invention, when the stable fibers are drafted between draft rollers, the width is regulated to be equal to or narrower than the fleece width of the stable fibers before the final draft roller (front roller). It is manufactured by stacking the filament fibers which have been spread out with the stable fiber bundle, that is, the fleece, and twisting them. The number of twists at this time may be at a twist level similar to that of ordinary spun yarn, but it can be set as appropriate depending on the application.

Next, an example of the manufacturing method will be explained in more detail with reference to the drawings.

FIG. 2 shows a side view of an apparatus showing one embodiment for obtaining the composite spun yarn of the present invention. First, the stable fiber roving l is supplied to the back roller 2 of the spinning machine, and the back roller It is drafted to a predetermined magnification between the roller 2, apron roller 3, and front roller 4.

On the other hand, the multifilament yarn 6 is supplied to an electrospreading device 8 via a guide 7, opened by electrostatic electricity, and overlapped with the fleece being drafted before the front roller 4.4'.

The fiber bundle in which stable fibers and filament fibers are composited in this way is twisted through the front roller 4.4' to become a composite spun yarn 11, passed through a snail guide 12 and a traveler 13, and then wound onto a winding bobbin 14. It will be done. In this manufacturing method, the structure of the composite spun yarn of the present invention is determined by the method of overlapping the opened filament fibers 6' and the drafted fleece 1', and this method is shown in detail in FIG. Figure 3 shows the front of the part where the filament fiber and stable fiber in Figure 2 are overlapped.
This is an enlarged view with the top roller 4' omitted (n indicates the nip point of the front roller), showing filament fibers 6' in which a stable fiber fleece 1' having a width W is regulated to the width W and opened. The figure shows the output of 0.4'.

To obtain the composite spun yarn of the present invention, the relationship between the fleece width W and the filament fiber opening regulation width W is 0.82≦□≦1.
．． 00, and the filament opening regulation width W is preferably within the range of the fleece width W.

(Example) Example 1 Using fibers 50'-24' made of polyethylene terephthalate as filament fibers and cotton fibers mainly consisting of end-threaded fibers as stable fibers, the method shown in Fig. 2 was carried out.
A composite spun yarn Ne36'' was obtained.The composition ratio of polyester filament fibers and cotton fibers at this time was 34% to 66%.The method for compositing polyester filament fibers and cotton fibers was as follows: polyester fibers 50'-24' 4.5K
The fibers are fed to an electric opening device that applies a voltage of V to open the fibers, the width is regulated to 2.1 mm by a guide, and the fibers are superimposed on a drafted cotton fleece with a width of 2.5 mm before the front roller, and ring-spun. Actual twist was applied at a twist rate of 19.2 t/in, and the material was wound onto a bobbin.

The resulting composite spun yarn has a composition ratio of 90% or more of cotton fibers among the fibers located in the outer layer of the spun yarn, and the inner layer is a so-called mixed fiber in which polyester filament fibers and cotton fibers are dispersed and mixed. It was a structural system.

When the composite spun yarn was knitted into a jersey texture using a 28-gauge circular knitting machine and then dyed, the surface touch of the knitted fabric had the gentle touch of cotton yarn, and it had excellent uniformity. A fabric with good appearance and dimensional stability was obtained.

It also showed excellent wear resistance. The characteristics of the composite spun yarn of the present invention described above can be compared to a core yarn in which conventional filament fibers and stable fibers are arranged in a core-sheath structure;
In order to compare with a yarn in which both are uniformly mixed, the same material as in the above example, that is, polyester filament 50'' was used.
-24' and cotton fiber composite yarn 36" (English cotton count), made a similar knitted fabric, and dyed the cloth.
Table 1 shows the results of comparing the characteristics.

As shown in Table 1 below, the composite spun yarn fabric according to the present invention has a cotton yarn touch, excellent yarn thread uniformity, good texture, excellent wrinkle resistance, dimensional stability, and abrasion resistance. The properties were excellent, comparable to those of uniform-mixed yarn fabrics.

The comparative evaluation values shown in Table 1 were evaluated as follows. In other words, the texture (feel) and the uniformity of the knitted fabric are based on sensory evaluation, and were evaluated by 7 people in 4 grades: very good ◎, good O1, average △, and poor ×. Indicated.

In addition, the wrinkle resistance and residual shrinkage rate are each JISL101.
Wrinkle prevention rate and shrinkage rate in Method 8 were measured according to Method A (warm water immersion method). Further, the plane wear is a value measured according to the JESL1018 method under the conditions of a pressing force of 0.45 kg and #600 emery paper.

Example 2 A roving made using cotton fibers mainly made of Egyptian cotton as a stable fiber was fabricated by the method shown in Fig. 2.
Supply and draft cotton fiber fleece width to 4.5mm
50 polyester multifilament yarns were widened and opened using an electric opening device that applied a voltage of 4.8 KV.
D-36' opening width 4. 0m, the cotton fiber fleece was overlapped in the center of the width before the front roller, and then a real twist of 23 t/in was applied by ring spinning to obtain a composite spun yarn Ne40'''.At this time, polyester filament Composition ratio of fiber to cotton fiber is 38% to 62
%.

The obtained composite spun yarn was used as both the warp yarn and the weft yarn, and was woven into a plain weave, and then dyed and finished.

The obtained fabric had the soft feel of cotton yarn, had extremely good uniformity, and exhibited excellent dimensional stability and abrasion resistance.

(Effects of the Invention) The composite spun yarn of the present invention has all or most of the yarn surface composed of stable fibers, and the inner layer is a yarn in which filament fibers and stable fibers are dispersed and mixed.
Surface tanchi has the feel of spun yarn, is strong, has excellent uniformity, and can provide a soft texture with firmness and tension. In particular, the inner layer of the system is a mixture of stable fibers and filament fibers and is tightly intertwined, resulting in extremely excellent wear resistance.

[Brief explanation of the drawing]

FIG. 1 shows a cross section of the composite spun yarn of the present invention. FIG. 2 shows an embodiment of a preferred manufacturing process for obtaining the composite spun yarn of the present invention, and FIG. 3 shows a method for compositing filament fibers and stable fibers. A varnished fiber, B: filament fiber 1 varnished fiber roving, 2: back roller 4: front roller, 6': filament fiber 8: electrospreader, 11:
Composite spun yarn patent applicant Toyobo Co., Ltd.

Claims (1)

[Claims] 1. In a composite spun yarn consisting of filament fibers and staple fibers, in the inner layer of the composite spun yarn, the filament fibers and the staple fibers are mainly dispersed and mixed, and in the outer layer surrounding the inner layer, the outer layer 65% by weight or more of the fibers constituting the composite spun yarn are staple fibers, and the composite spun yarn contains 40 to 93% by weight of the staple fibers.