JP2000073245A - Chenille yarn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chenille yarn which gives the traditional rayon chenille products having greatly improved feel and grade, including touch and fine texture. SOLUTION: This chenille yarn is characterized by its filaments composed of ultrafine rayon filament groups having a single filament fineness of 2 deniers or less, wherein at least 50% of the ultrafine rayon filament groups are ultrafine rayon single filament groups having a sectional solidness of at least 75%, and the ultrafine rayon filament groups have an average divergence between the single filaments of 0.05 mm/d or more.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding yarn using rayon filament yarn as a flower yarn, and particularly when formed into a molding product, has a very good feel and an excellent firmness even though the touch is very soft. An object of the present invention is to provide a mall yarn having a firmness.

[0002]

2. Description of the Related Art Conventionally, molding products comprising molding yarns using rayon filament yarns as flower yarns are well known. Although this rayon molding product has good feeling and quality, there has been a demand for even better products. However, at present, there has not been provided anything excellent enough to meet this demand.

[0003]

SUMMARY OF THE INVENTION Accordingly, the present invention is to provide a rayon molding yarn which can constitute a material excellent in the feel and quality of conventional rayon molding products including touch and firmness. It is assumed that.

[0004]

Means for Solving the Problems The present inventors diligently studied the above-mentioned problems, and replaced the rayon filament yarn conventionally used as a yarn with a lower single yarn fineness and a higher Young's modulus. Further, the present inventors have focused on using rayon filament yarn having less fluff, and arrived at the present invention. That is, the present invention provides a method in which the yarn comprises a rayon filament microfine fiber group having a single fiber fineness of 2 denier or less, and the ultrafine fiber group has a rayon filament microfine fiber having a cross-sectional degree of 75% or more. Occupies 50% or more in the ultrafine fiber group, and the ultrafine fiber group has an average opening degree between single fibers of 0.05 (mm) according to a method described later.
/ D) or more. The core yarn for gripping the flower yarn is desirably a nylon filament yarn having a single yarn fineness of 5 to 7 denier. (However, in the unit of the average opening between the single fibers, d
Stands for fiber denier)

[0005] In the production of molding yarn, for example, a plurality of core yarns (some of them are sometimes used as adhesive fiber yarns for bonding flower yarns) are supplied to a molding twisting machine while the surrounding yarn is being supplied. Wrapped with a yarn (also referred to as a decorative yarn), and then twisted while cutting the wrapped yarn with a cutter to form a molding yarn. In the case of using an adhesive fiber yarn, after forming the molding yarn, The heat treatment is performed at a temperature at which the adhesive fiber yarn is melted, and the core yarn and the flower yarn are bonded and fixed to prevent the shedding of the flower yarn from the core yarn.
In the present invention, the method is not limited to the method for producing the molding yarn, and the molding yarn may be produced using, for example, the Russell method or the tricot method. In short, the production method does not matter.

The rayon filament yarn of the present invention is required to be a fine fiber having a single fiber fineness of not more than 2 deniers. It is not preferable because it cannot be obtained. It is preferably from 0.7 to 1.7 denier, and more preferably from 0.7 to 1.5 denier.

[0007] In addition, it is preferable that the fineness of the ultrafine fibers constituting the flower yarn is not merely fine, and it is preferable that the ultrafine fibers are uniform and have a high degree of cross-section. % Or more is 50% in the ultrafine fiber group.
It is necessary to constitute the ultrafine fiber group occupying the above,
In addition, the ultrafine fiber group needs to have an average degree of opening indicating the variation and spread between the constituent single fibers of 0.05 (mm / d) or more. And with such a configuration,
The obtained mall product has an extremely excellent hand feeling and is a mall product having excellent firmness and stiffness despite the soft touch.

[0008] In this specification, the degree of cross section of rayon filament fibers constituting the yarn is indicated as a ratio (%) of the area of the cross section of the fiber to the area of the circumscribed circle of the cross section. Therefore, if the cross-sectional shape of the fiber is a perfect circle, it becomes 100%, the fiber becomes non-circular away from the perfect circle, and the flatter the shape, the lower the degree of cross-sectional filling.

The average degree of opening between rayon filament fibers constituting the yarn is obtained by the following test method. That is, (1) soak the yarn in hot water of 65 ° C. for 30 minutes. (2) After light dehydration, dry at 105 ° C. for 2 hours. (3) One end of the processed yarn is gripped, and the other end is 1 g / d.
And cut it at a length of 10 mm from the gripping end. (However, d is an abbreviation of fiber denier in the unit of load.) (4) The cut end is directed downward on the length scale, the maximum length and the minimum length are measured, and the average value is obtained.
The average value is divided by the total denier of the measured yarn.

If the rayon filament monofilament of the above-mentioned yarn is less than 75% in cross-section and the cross-section is more non-circular and flatter, the direction becomes unsatisfactory in terms of firmness and undesirability. Further, even if there is a single fiber having a cross-sectional shape of 75% or more in the cross-sectional shape, if the proportion in the ultrafine fiber group is as small as less than 50%, similarly, in terms of firmness and firmness, It is not desirable because the direction becomes unsatisfactory.

Further, the rayon filament single fiber is
If the fibers are in a state of being entangled with each other, they do not become excellent touch yarns, and the degree of opening between the constituent single fibers must be 0.05 (mm / d) or more. is there.

The ultrafine rayon filament yarn used for the above-mentioned yarn can be obtained, for example, by the method described in Japanese Patent Publication No. 7-18051, entitled "Method of Manufacturing Fine Fine Viscose Rayon Filament Yarn". In order to obtain a rayon filament yarn that satisfies the cross-sectional solidity as well as the inter-fiber sticking rate together with the fineness, the spinning of viscose, scouring, and winding are continuously performed, compared with the conventional rayon production method using a pot method. Manufacturing by a so-called continuous spinning method (continuous spinning method) is easier and preferable. In other words, in order to obtain a filament yarn (fiber group) having a high degree of cross-section and a high proportion of fibers in a large proportion by a conventional method, special conditions must be adopted, which is not preferable in actual operation. . In addition, in the conventional pot method, the wound yarn is inevitably twisted and processed and wound because of the method. If the entanglement is present and the sticking or entanglement ratio is high, a product with a good touch feeling as a final molding product cannot be obtained.

On the other hand, in the continuous spinning method, the filament yarns are not twisted with each other from the spinning of the filaments through the chemical solution treatment and the drawing process to the final winding. Since it reaches the final step in the state of separation and juxtaposition, the degree of cross section is high and there is little sticking or entanglement. Accordingly, the filament yarn in which the individual fibers are gathered as a group has a large variation between the individual fibers, and the filament yarn has a large spread in the width direction (direction perpendicular to the length direction) as the filament yarn. If this becomes a mall product, the feeling and the quality can be made extremely excellent.

As the core yarn for gripping the yarn, a fiber having a single fiber fineness of 5 to 7 denier is used, and the material is not particularly limited, but synthetic fiber filaments such as nylon and polyester are generally used. However, it is more preferable to use a nylon filament from the viewpoint of dyeability. The core yarn is not limited to the filament yarn but may be a spun yarn.

As a part of the core yarn, an adhesive fiber for firmly adhering and fixing the flower yarn to the core yarn can be used. Even if this adhesive fiber is also a filament yarn,
It may be a spun yarn. In short, the adhesive fiber may be a fiber having a fusion component having a melting point of about 80 to 150 ° C. on at least a part of the fiber surface, and may be a single component fiber composed of only the fusion component, or a fusion component. The core-sheath type or side-by-side type composite fiber in which the component forms all or a part of the surface may be used. In addition, the fusion component of the adhesive fiber may be selected from known adhesive fibers in consideration of the adhesion to the core yarn and the flower yarn.

[0016]

EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited to the examples. Example 1: As a core yarn, a heat-fused nylon fiber of 50 denier / 10 filament (trade name “Elder” manufactured by Toray Industries, Inc.) and a nylon spun 30/1 (30 count 1)
Book) and prepared. Also, as the presser yarn, a 18-denier / 5-filament wooly nylon filament yarn and the Toray “Elder” 50-denier / 10 filament were prepared. 120d / 80 for the raw yarn
f rayon filament yarn (single fiber fineness is 1.5d)
Thus, a filament yarn prepared by the continuous spinning method, in which the single fiber cross-sectional degree was 81% or more and accounted for 50% or more in the single fiber group, was prepared. The rayon filament yarn had almost no sticking or entanglement between the single fibers, and had excellent dispersion and spread between the single fibers.

The above-mentioned core yarn, presser yarn and flower yarn were supplied to a usual molding twisting machine to prepare a molding yarn. The yarn was then directly dyed and dyed black.

The black dyed malle yarn is used as weft yarn at a density of 45 yarns / inch and a polyester spun yarn of 30 count /
A plain weave molding was prepared with two yarns as warps at a density of 100 yarns / inch. The obtained plain weave mall has a much softer touch compared to the conventionally known rayon plain weave mall, and despite that it has a remarkably excellent firmness and goodness, and it has a great feel and dignity. And the 10 reviewers who compared it all rated it as a wonderful one with significantly improved feel and quality. In addition, the flower yarn composed of the rayon filament yarn of this molding yarn has little sticking or entanglement between the single fibers, and has excellent dispersion and spread between the single fibers. The opening was 0.06 (mm / d).

Example 2: Polyester filament yarn 50d / 36f is used as the core yarn, and 75d / 36d is obtained by the continuous spinning method in which the yarns having a cross-sectional degree of 80% or more account for 50% or more in the single fiber group. A 50f rayon filament yarn was prepared. Using the core yarn and the flower yarn, a Russell molding yarn was prepared using a Russell machine, and the molding yarn was directly dyed with a dye.

Using the molding yarn, a molding was formed by weft knitting with a well density of 30 / inch and a course density of 25 / inch. This mall has a very soft touch, nevertheless has excellent firmness, good texture and excellent quality.
Human reviewers both rated it as excellent in texture and quality, unlike any other conventional product. In addition, the flower yarn in this molding yarn has almost no sticking or entanglement between the single fibers, has excellent dispersion and spread between the single fibers, and has an average opening degree between the single fibers of 0.05 ( mm / d).

[0021]

As described above, the molding yarn of the present invention can be used as a molding product having both unprecedented softness and firmness and excellent feeling and quality. Of course, it can be widely used as general interior interior goods, car interior goods, bag articles and the like, of course, for decorative articles and clothing.

Claims (2)

[Claims] 1. A flower yarn comprising a rayon filament ultrafine fiber group having a single fiber fineness of 2 denier or less, wherein the ultrafine fiber group has a rayon filament ultrafine single fiber having a cross-sectional degree of 75% or more. Is 50 in the microfiber group.
%, And the ultrafine fiber group has an average degree of opening between single fibers of 0.05 (mm) according to the method defined in the description.
/ D) or more. 2. The molding yarn according to claim 1, wherein the core yarn holding the flower yarn is a nylon filament yarn having a single yarn fineness of 5 to 7 denier.