JPS6051583B2 - Method for producing textile products with excellent gloss and flexibility using bound spun yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for producing textile products with excellent gloss and flexibility using bound spun yarn.

More specifically, the surface of the staple fiber bundle, which is substantially untwisted, is covered under a condition in which the fibers or bundles consisting of only one or several staple fibers do not have practical strength as a yarn by themselves. In order to prevent the staples constituting the kink-free staple fiber bundle from slipping off each other, the spun yarn is twisted tightly in a spiral pattern so that the yarn as a whole has practical strength for the first time, that is, the twin yarns of so-called bound spun yarn. The present invention relates to a method for producing textile products with excellent gloss and flexibility using

(Prior Art) The present inventors first supplied roving to a ring spinning frame having a four-wire draft device, and then drafted the yarn so that the number of staple fibers spun from the front roller of the draft device was several or less. At the same time, on the other hand, the spun yarn already spun by the ring spinning machine is supplied to the front roller roller, and the several yarns (preferably 2 to 10*) are drafted.
The spun yarn is spun together with the staple fibers of Specifically, it is possible to obtain a bound spun yarn having the above-mentioned yarn structure in which several staple fibers or bundles are twisted at regular angles on the surface of an untwisted staple fiber bundle. is suggesting.

Furthermore, it is possible to obtain a spun yarn having a structure almost similar to this spun yarn at high speed by applying a temporary effect to the drafted staple fiber bundle under a special mechanism. The present inventors have obtained the knowledge that there is, and have already proposed this (Japanese Patent Application No. 48-39991 [Patent Publication No. 52-43256], Japanese Patent Application No. 71283 [Patent Publication No. 52-43257]) No.], patent application 1972/-61
No. 791 [Special Publication No. 53-3793]), etc.

(Problem to be solved by the invention) Such a bound spun yarn is in a state in which only one or a few stable fibers have no practical strength as a yarn (spun yarn) by themselves. The non-twisted fiber bundles of the core are formed into twisted fiber bundles or fibers, and are twisted around the non-twisted fiber bundles of the core at almost regular angles, and are the overwhelming majority of the non-twisted fiber bundles in the entire yarn. The stable fibers that make up the yarn are tightly bound to prevent them from slipping off each other, and the yarn as a whole exhibits a yarn structure that has practical strength for the first time. In one embodiment, when a plurality of yarns are used to form a composite yarn, there are inherent problems as described below.

In other words, when the yarn is combined, twists are inevitably added to the entire bundled spun yarn.
(1) Twisting occurs in the untwisted stable fiber bundle of the core, and as mentioned above, the stable fibers that make up the fiber bundle are the overwhelming majority of the yarn as a whole, and the There is a risk that the bulkiness of the yarn may be impaired or the effect of twist-free spun yarn may be significantly reduced.

(2) While the core has no twist as described in (1) above, the fiber bundle or fibers are tightly twisted in a spiral direction in a predetermined twist direction, so this fiber bundle Although the presence of fibers in the yarn as a whole is a small minority, it cannot be ignored, and the presence of fibers in the yarn can vary greatly depending on the form in which the fiber bundles or fibers are present in the yarn. The texture, appearance, characteristics, etc. of the yarn will change.

(3) Bundled spun yarn Single yarn is generally made of a bundle of fibers or a strong bundle of fibers, so when viewed from the yarn side, it generally looks like this:
The yarn surface is uneven and non-smooth due to the structure of more or less constricted core fiber bundles. (2) above.
This is related to the previous section, but if the non-smooth structure is made stronger in the composite yarn by adding yarn, the degree of binding becomes stronger, but even as a composite yarn, it has severe unevenness. The yarn may become non-smooth, the yarn may become stiff, and the surface may feel rough to the touch.

(4) In particular, when knitting and weaving is performed using a double yarn made by combining two bound spun yarns to produce a knitted fabric, the texture may be affected due to the reasons (1) and (3) above. Since it is coarse and hard and feels rough to the touch, and the threads have large irregularities, the fabric has a satin-like surface condition, which can only result in a product with poor luster due to the thread structure.

An object of the present invention is to provide a method for manufacturing textile products with excellent gloss and flexibility using bound spun yarn, which solves the above-mentioned problems all at once and rationally.
The single yarn of bound spun yarn has unevenness and is non-smooth, which is a major disadvantage from some viewpoints, and it is generally difficult to avoid due to the yarn structure, but it can be successfully used in a modified manner in the field of high-order processing. This method substantially eliminates the problem and makes it possible to produce yarn with a smooth surface, thereby further increasing the versatility of the bound spun yarn and providing a knitted fabric with a soft texture and excellent gloss. We aim to provide the following.

(Means for Solving the Problems) The present invention, which achieves the above-mentioned objects, has the following configuration.

That is, the surface of the substantially twist-free stable fiber bundle is coated with the twist-free surface in a state where the fiber or bundle consisting of one or several stable fibers does not have substantially the practical strength as a yarn. Two bundled spun yarns are formed by forming a yarn with a strongly spiral constriction structure to prevent the stable fibers that make up the fiber bundle from slipping out of each other.
The spiral fibers or bundles are combined in the direction of unraveling to form double yarns with smoothed surface constrictions of the stable fiber bundles, and the double yarns are knitted and woven. This is a method for producing textile products with excellent luster and flexibility using a characteristic spun yarn.

(Function) The present invention will be explained in more detail below.

The substantially twist-free stable fiber bundle, which is the core fiber bundle of the bound spun yarn used in the present invention, is made of any stable fiber material without particular limitations, and has no twist or alternating twist, that is, substantially no twist. It has no twist,
With this alone, the bundle cannot maintain its shape as a thread.

Around this bundle, only one or a few stable fibers form a fiber bundle or fibers in a state that does not have practical strength as a yarn by itself. Twisted in a spiral shape at almost regular angles, the stable fibers that make up the core non-twisted fiber bundle, which is the overwhelming majority of the entire yarn, are tightly bound together so that they do not slip off from each other, but The yarn as a whole has a yarn structure that has practical strength for the first time and constitutes a bound spun yarn. Although it is preferable that the surface fiber bundles or fibers have a regular pitch, in the present invention, sufficient effects can be obtained even when applied to bundled spun yarns with a fairly irregular pitch. You can expect it. In the present invention, two of such bound spun yarns are combined in the direction of unraveling the spiral fibers or the fiber bundle of the bundle to form a double yarn in which the waist structure of the core fiber bundle is smoothed. The double yarns are knitted and woven into a knitted fabric.

In the present invention, the total number T (times/m) per 1 m is:
It is preferable to keep it within the range of -, and if it is out of this range, the effects of the present invention tend to be poor, although they may be observed.

Note that Nm is the metric count of the single bundled spun yarn. Incidentally, this range of the number of threads is extremely low and has not been generally adopted when using threads of spun yarn for conventional rings and the like.

Due to the above-mentioned binding, the degree of binding of the fibers or fiber bundles in each bound spun yarn is loosened, the degree of binding is weakened, and at the same time, the surface of the core fiber bundle is smoothed, resulting in a reduction in binding of the fibers or fiber bundles. As a result, the unevenness of each bound spun yarn is effectively smoothed out, resulting in a yarn with good smoothness as a twin yarn, and the fabric made by knitting and weaving the twin yarn has a soft texture. This results in a knitted fabric with excellent luster.

Even if the binding of individual bound spun yarns is loosened by such joining, a new real twist is inserted as a double yarn, which may actually have a negative impact on knitting and weaving by reducing strength. There is almost no top, and since the fruit is low-fruited, the texture is rarely hard. When the above-mentioned total number T is smaller than 70VNm/2, it can be said that it is generally sufficient, although the effect of smoothing the yoke due to the combination is recognized, and 100VNm. ．． When it is larger than /2, the smoothness of the threads is brought about in the rough layer and the gloss of the product is improved, but on the other hand, the texture tends to become stiffer.

In the twin yarns that have undergone this kind of spinning, the spinning fiber bundles or fibers differ from the helial angle (the angle between the yarn axis direction and the winding direction) in the bundled spun yarn single yarn before being made into twin yarns. ), the twin threads will be present at a smaller angle and looser with respect to the axial direction, and some may also appear floating on the outer periphery of the thread. Even if there are stables in such a state, the number of such stables is very small, no more than a few, and since they no longer have a particular binding and restraining function, they are particularly sensitive to product texture, etc. There is virtually no negative impact on

Of course, if the number of fibers is the same and the direction of fibers is opposite to that of the present invention, even though the effect of the number of twists on the core fiber bundle is at the same level, the binding will become tighter and the binding spun yarn will become more concentrated. The unevenness of the yarn becomes large, and only double yarns with unevenness and hard texture are obtained, and it is impossible to obtain a knitted fabric with good texture and gloss.

In this case, the existence of stable fibers, which are originally a very small minority, has been combined, which has caused an extremely large new adverse effect on the feel of the product. As is clear from the above description, the method of the present invention is effective when applied to yarns in which the welding direction, which is the direction in which the spiral threads are unraveled, can be determined.

Even if the present invention is applied to a yarn whose binding direction cannot be determined according to the present invention, even if it is a bound spun yarn, no effect will be obtained. (Example) Polyester stable 1.
25d×44Trc! Two bundled spun yarns shown below consisting of n were combined together, and further combined in the S direction using a ringen yarn machine under the following conditions to obtain a double yarn.

Count 100m count (60S) Strength
260g average rotation angle
380 times variation in angle C■
(%) 12% direction
Table 1 shows the results of evaluating the double yarns obtained by variously changing the number of Z yarns and the knitted fabric (26G jersey) knitted from the double yarns.

As is clear from Table 1, the properties of double yarns and knitted fabrics change depending on the number of yarns, especially when the above formula is satisfied (
500, 600, 700 times/m), very good results were shown.

In particular, the 600 cycles/m type has a good soft texture, and
The gloss is also particularly good, since the yarn surface is very smooth. (Effect of the invention) As described above, in order to produce a knitted fabric using the twin yarns of the bundled spun yarn, the bundled spun yarn itself has a twist-free core fiber bundle,
Because it has two types of structures: there are stable fiber bundles or fibers surrounding it, which are a small minority but contribute essential to the formation of the yarn structure, it is important to be careful. It is necessary.

Claims (1)

[Claims] 1. The surface of the staple fiber bundle that is substantially twist-free,
In a state in which a fiber or bundle consisting of one or several staple fibers does not substantially have the practical strength as a thread,
Two bundled spun yarns constituted by a yarn with a strongly spiral constricted structure so that the staple fibers constituting the non-twisted fiber bundle do not slip off from each other are attached to the spiral fiber bundle. A bound spun yarn characterized in that the staple fiber bundle or the staple fiber bundle is joined together in the twisting direction to unravel the folds of the staple fiber bundle to form double yarns with smoothed surface constrictions, and the double yarns are knitted and woven. A method for producing textile products with excellent luster and flexibility.