JPS599233A - Composite spun yarn - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composite spun yarn in which a spun yarn and a synthetic fiber multifilament yarn are interlaced and bonded.

Conventionally, in order to obtain a yarn that takes advantage of the good tension, waist, etc. texture and appearance of spun yarn, and the strength and elongation characteristics and uniform appearance of filament yarn, the two have been combined and integrated. One of the commonly used yarns is intertwisted yarn, which is obtained by aligning two yarns and twisting them.

However, the intertwisted yarn of spun yarn and filament yarn is
Due to the difference in the level of thickness unevenness of both yarns, most of the yarns have significant twist unevenness, and fabrics made from intertwisted yarns of both yarns cannot be used except for special purposes.

On the other hand, there is a strong market demand for changes in appearance effects and multi-functional products. This is a case where the combined functions of the hygroscopicity of natural fibers and the hydrophobic one-dimensional stability and pleat retention properties of synthetic fibers are required at the same time.

SUMMARY OF THE INVENTION An object of the present invention is to improve the conventional drawbacks of combining spun yarn and synthetic fiber multifilament yarn.

That is, the present invention provides a composite yarn consisting of a spun yarn and a synthetic fiber multifilament yarn, in which the spun yarn and the synthetic fiber multifilament yarn are intermittently interlaced and bonded, and the interlaced bonded portion is 20 yarns/m2. In addition to the above, the front and back of the nuclear interlacing joint are mainly parts where the spun yarn and multifilament yarn are aligned in a bundled state, and/or where the spun yarn is the core and the multifilament yarn is distributed in the sheath. A composite spun yarn is characterized in that it consists of a portion having a tight core-sheath structure.

The present invention will be explained in detail below.

The composite spun yarn of the present invention is a composite yarn consisting of a spun yarn and a synthetic fiber multifilament yarn, and the spun yarn and the multifilament yarn are intermittently interlaced and bonded. The interlaced bond referred to in the present invention means that the spun yarn is inserted between the multifilaments, the multifilament yarn is divided into 2 to 30 groups, each group is bundled, and each group surrounds the spun yarn. The spun yarn and the filament yarn are intertwined and firmly bonded to become one. These confounding connections exist intermittently and randomly, and their number must be 20 or more per 1 m.

If it is less than 20 pieces/m, the spun yarn and the multifilament yarn will separate in some places, reducing the efficiency of tightening and weaving, which is undesirable. There are two types of composite tqK of spun yarn and multifilament yarn:

In other words, the first is that the spun yarn and multifilament yarn are aligned and distributed in a Kerr condensed state, and the alignment length is 2.
~5 degrees, alternately inverting at the interlaced joint part and repeating alignment and separation while being twisted in position, or connected to a part having a core-sheath structure described below via the interlaced joint part. It has also become.

In addition, the focused state of the multifilament in the part that is aligned in this focused state is not necessarily focused in one ζ・, but is divided into multiple groups and focused for each group. It can be anything.

The part having a core-sheath structure has a structure in which the spun yarn is placed in the core part and the multifilament yarn is placed in the sheath part, and the multifilament yarn is a mixed fiber yarn with different shrinkage and different elongation, and the degree of interlace is Low, likely to occur in some cases.

To improve the efficiency of such a composite spun yarn (and to form a large number of interlaced joints), the overfeed rate of the spun yarn and multifilament yarn should be 10% or less, and the difference in overfeed rate between the two should be 2% or less. can be obtained by feeding both yarns to a fluid turbulence region.The overfeed rate is 1.
If the yarn is 0 or more, the yarn turbulence in the fluid turbulence area is large and loops are likely to form, and the number of intertwined joints decreases. Furthermore, if the difference in overfeed rate is large, such as 2 inches or more, the disturbance of the yarn due to large overfeed will greatly impede the entanglement of fluff, and the number of interlaced joints will decrease. The processing in the fluid turbulence region mentioned here can be performed using a normal interlaced nozzle, but it can also be performed using a turbulent jet nozzle (Taslan nozzle).

The spun yarn and multifilament yarn used in the present invention are not limited to natural fibers or synthetic fibers (they can be used). - Describe examples of composition combinations.

In books where the surface of the fabric is glossy, the texture is uneven, and the fabric is dyed in a unique color, the spun yarn is wool U1. Super bright polynis del filament yarn (50 de//
48 fil), which is glossy and has good drapability by 1Jcm, is made of 100% spun polyester yarn (wire count 60/IS) and a super bright multifilament yarn with a triangular cross section. Polyester filament yarn (soda/4sfit) is used, and the spun yarn has a 65-weight polyester fiber 1. Blend yarn of 35% cotton fiber (wire count 40/1'')
), a polyester filament yarn (50 de/48 stitches 1) having a triangular cross section may be used as the multifilament yarn.

Incidentally, this is also related to the relative submersion shrinkage rate between the spun yarn and the multifilament yarn, and the difference in the 1-bar feed rate at the time of interlacing and bonding, but is an important factor for the surface effect and function of the fabric. In other words, in the case of spun wrinkled fabrics, the submerged shrinkage rate of the multifilament yarn is relatively different from that of the spun yarn, so that the yarn foot difference between the composite yarns of a certain length taken from the processed fabric is satisfied. It is desirable that the difference in diving shrinkage rate between the two be 5% or more.

In addition, the multifilament yarn is preferably a non-twisted yarn.
- may be used and interlaced, but the degree of interlacing is preferably low.

In addition, in the case of glossy and drapeable fabrics, the difference in yarn length is small, preferably 3 threads or less, and the submerged shrinkage rate of multifilament yarn is smaller than that of spun yarn, and the multifilament yarn is in the flight range or super bright. A thread is used.

The composite spun yarn of the present invention has a cut obtained from such a configuration, and its feature is that the spun yarn and the multifilament yarn have an interlacing joint, so that it can be used without twisting. There is no separation and there is no major hindrance to the preparation and paper manufacturing process. However, in order to increase weaving efficiency, it is preferable to perform sizing (buising) treatment. In addition, only when this composite spun yarn is used in a non-twisted state can the natural surface effect and the cost of twisting be reduced, making it possible to discover the characteristics. The fabric obtained by 51C is processed through the usual dyeing process, but when aiming for a different color effect, it is necessary to mix fibers with different dyeability, and K to achieve the same color is a single yarn. Naturally, it is necessary to design yarns that take into account denier and cross-sectional effects.

As described above, the woven or knitted fabric using the composite spun yarn of the present invention can have a natural mixed fiber appearance effect or functionality if the spun yarn and multifilament yarn are selected with clear roles and divisions and processed. It can be obtained as a non-twisted woven or knitted fabric.

The present invention will be explained below with reference to Examples.

〔Example〕

The spun yarn contains polyester fiber (55% by weight) and cotton fiber (
A blended yarn (wire number 1,40/IS) consisting of 45wt%) with a diving shrinkage rate of 8 was used, and a superbride polyester filament yarn (50 de/36 fil) was used as a multifilament yarn. Atte wastewater yield rate is 3 times.
Composite processing was performed using mono-conditions such as kl/crl, yarn speed aoom/min, and bar feed rate of 5% for both the blended yarn and the polyester filament yarn. The obtained composite spun yarn has 45 interlaced joints per 1 m, and in the part outside the ring of the interlaced joints, a bundled aligned part and a core-sheath structure coexist, and the spun yarn and multilayer No defects such as separation of filament yarns were observed. This composite spun yarn is used for both the warp and weft of the fabric, and after it is woven without twisting in a plain weave, only the polyester side is dyed with a disperse dye.The finished product has no yarn unevenness or nep on the line side.

Subbu etc. were left white, giving a fancy appearance as a natural kasuri-like textile surface.

In addition, this fabric takes advantage of the sweat-absorbing and moisture-absorbing properties of cotton fibers, and has the unique properties of polyester.

It has wrinkle resistance and is suitable as a fabric for women's dresses, skirts, and jackets.

Claims (1)

[Claims] A composite yarn consisting of a spun yarn and a synthetic fiber multifilament yarn, in which the spun yarn and the synthetic fiber multifilament yarn are intermittent and interlaced, and the number of interlaced joints is 20 or more per meter. In this case, the front and back of the interlaced joint are mainly a part where the spun yarn, multifilament yarn, and filament yarn are aligned in a bundled state, and/or where the spun yarn is the core and the multifilament yarn is arranged in the sheath part. A composite spun yarn characterized by comprising a portion having a core-sheath structure.