JPH0874151A - Napped cloth - Google Patents

Abstract

(57) [Abstract] [Purpose] In a napped fabric in which a cut pile is formed from polyester multifilament yarn, the texture of the cut pile is softened, and hair fall is prevented, and the anisotropic reflection property of the cut pile makes the pile glossy. Give a change to. [Structure] A polyester multifilament yarn forming a cut pile is composed of at least two types of filaments having different filament fineness and flatness, and the tip of the cut pile made of filaments having a small fineness and a large flatness has a large fineness, The cut pile made of filaments having a low flatness is projected higher than the tip.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a woven fabric or a knitted fabric having a cut pile, the cut pile being made of polyester multifilament yarn, which is suitable for an interior material of a passenger car and an interior fabric.

[0002]

2. Description of the Related Art As a napped fabric having a standing cut pile, it is known to use a multifilament yarn composed of fine denier filaments having a fineness of 1.5 denier or less for the pile yarn in order to soften the texture. ing. However, in this case, the pile is easily worn out,
Since the feeling of nap disappears, in order to prevent this, the multifilament yarn consisting of filaments with a large fineness and the multifilament yarn consisting of filaments with a small fineness should be aligned, twisted or evenly mixed without unevenness. BACKGROUND ART A composite yarn is manufactured by using the composite yarn, and the composite yarn is used as a pile yarn of a woven fabric or a knitted fabric for knitting and weaving.

It is also known that a multifilament yarn consisting only of filaments having a high fineness is used as a pile yarn to knit and form a cut pile, and then the tip of the cut pile is thinned by a chemical treatment. . In addition, various methods are known in which the filaments of multifilament yarns used for piles are made to have an irregular cross section to emphasize the soft texture and to express an elegant luster due to the unique anisotropic reflectivity. However, the problem that hair softening occurs when the texture is soft, and the softness of the texture is lost when trying to prevent hair falling has not been solved.

[0004]

DISCLOSURE OF THE INVENTION The present invention relates to a napped fabric in which a cut pile is formed from polyester multifilament yarn, and if the cut pile is made to have a soft texture, hair collapse occurs, and it is a texture to prevent hair collapse. By solving the previously unsolved problem of loss of the softness of, and forming a cut pile by mixing filaments with different aspect ratios, the change in gloss due to unique texture and anisotropic reflectivity is achieved. It is possible to make a wide variety of products by giving them. Further, the present invention provides an effective means for eliminating the defects of white blur and whitening due to the fall of hair.

[0005]

The raised fabric of the present invention is
In a napped fabric in which a cut pile is formed from polyester multifilament yarns, the polyester multifilament yarns are composed of at least two types of filaments having different fineness and flatness. Is characterized in that the tip of the cut pile has a higher fineness and protrudes higher than the tip of the cut pile made of filaments having a small flatness.

That is, in the present invention, the pile yarn made of polyester multifilament yarn is composed of at least two types of filaments having different filament fineness and flatness. In this case, the flatness is set to be larger as the filament has a smaller fineness. This flatness rate is
It is defined by the ratio between the maximum diameter of the filament cross section and the maximum diameter in the direction perpendicular to the direction of this maximum diameter. The cross-sectional shape may be any of a rectangle, an ellipse, an oval shape, a multilobe shape, a four-corner shape, etc., as long as it has the flatness described later.

The fineness of the filament A having the smallest fineness is preferably 2.0 denier or less, and the fineness of the filament B having the maximum fineness is preferably more than 2.0 denier and 8.0 denier or less. The filament A having the smallest fineness has a fineness of 2.
When it exceeds 0 denier, the texture becomes hard. On the other hand, when the fineness of the filament B having the maximum fineness is 2.0 denier or less, hair fall is likely to occur, and conversely, when it exceeds 8.0 denier, the texture becomes too hard. The difference in fineness between the filament A having the smallest fineness and the filament B having the largest fineness is preferably 1.5 denier or more.

The flatness of the filament A having the minimum fineness is preferably 1.3 or more and less than 6.0, and the flatness of the filament B having the maximum fineness is preferably 1.0 or more and less than 1.3. When the flatness ratio of the filament A having the smallest fineness is less than 1.3, both the effect of softening the texture and the visual effect due to anisotropic reflection are weakened, while when it exceeds 6.0, the production becomes difficult, which is not practical. Not relevant. On the other hand, when the flatness of the filament B having the maximum fineness is 1.3 or more, the hair falling phenomenon is likely to occur. The difference in flatness between the filament A having the smallest fineness and the filament B having the largest fineness is preferably 2.0 or more.

According to the present invention, the tip of the cut pile made of filaments having a small fineness and a large flatness is projected higher than the tip of the cut pile made of filaments having a large fineness and a small flatness, and the pile surface is uneven. To form. The amount of the cut pile forming this convex portion is preferably 30 to 70% by weight of the entire pile, and if it is less than 30% by weight, a soft texture cannot be obtained, and conversely 70% by weight is not obtained.
When it exceeds the weight%, hair fall tends to occur.

The length of the cut pile forming the convex portion is preferably 105 to 130% of the length of the pile forming the concave portion. If the length is less than 105%, the desired soft texture cannot be obtained. On the other hand, when it exceeds 130%, hair fall easily occurs.

The multifilament yarn, which is the pile yarn of the present invention, is arranged such that the filaments of the smallest fineness are concentrically arranged around the filament of the largest fineness and the filaments of the smallest fineness are located on the outermost side. Preferably. The preferred thickness of the pile yarn is 50 to 300 denier, and when the denier is less than 50 denier, the pile is easily set, and when the denier is 300 denier, a low gauge knitting machine is used when a warp knitting machine such as Russell is used. Since the pile must be used, the distance between the piles becomes large, the ground yarn is exposed, and the appearance becomes poor.

In the pile yarn, a discharge hole having a large diameter is arranged at the center of a spinning nozzle of a polyester multifilament yarn, and a discharge hole having a small cross-section with a small diameter is arranged on the outside of the yarn discharge nozzle. A highly shrinkable polyester filament can be spun out from the above, a low shrinkage polyester filament can be spun out from a discharge hole having a thin outer peripheral cross section, and this can be drawn. Then, the obtained yarn is used as a pile yarn to knit or weave a pile woven fabric or a pile knitted fabric to form a cut pile, and the heat-shrinkable polyester filament in the central portion is heat-treated more than the low-shrinkable polyester filament in the outer peripheral portion by heat treatment. The napped fabric of the present invention can be obtained by shrinking much.

Further, a filament having a small fineness and a high flatness ratio is spun with a polymer having a low thermal shrinkage, for example, polyethylene terephthalate, and a filament having a high fineness and a low flatness ratio is polymerized with a high heat shrinkage, for example, a copolyester. , The latter multifilament yarn is opened while running to form a ribbon, and the former multifilament yarn is layered and twisted to form a composite, and the resulting composite yarn is used as a pile yarn. Then, after knitting and weaving in the same manner as described above to form the cut pile, heat treatment may be performed. In addition, when weaving, using a double Russell machine,
Knit two cloths on the front and back while connecting them with the pile yarns, and cut this pile yarn in the middle of the two cloths.
A napped fabric may be obtained by separating a piece of fabric.

When using the high-shrinkage and low-shrinkage polyester filaments, the difference in boiling water shrinkage between the high-shrinkage polyester filament and the low-shrinkage polyester filament is preferably 5 to 40%. If the difference in shrinkage ratio is less than 5%, the projecting length of the cut pile forming the convex portion is insufficient to obtain a desired soft texture, and if it exceeds 40%, hair fall tends to occur.

When melt-spinning a polyester multifilament yarn, titanium oxide is generally added to the polymer in an amount of 2.0% by weight or less. In the present invention, however, for a filament having a fine fineness which constitutes the outer peripheral portion of the pile yarn. The polymer contains a relatively large amount of titanium oxide as compared to the polymer for filaments having a large fineness that constitutes the central portion,
It is preferably 0.5 to 2.5% by weight, and as described later, it is possible to make white blur and whitening less noticeable at the time of hair fall. However, if the blending amount is less than 0.5% by weight, the effect is not sufficient, and conversely, if it exceeds 2.5% by weight, problems occur in the spinning / drawing process.

[0016]

In the napped fabric of the present invention, the tip of the cut pile made of filaments having a small fineness and a large flatness is projected above the tip of the cut pile made of filaments having a large fineness and a small flatness. Since the tip of the cut pile, which has a soft texture and a large flatness and has anisotropic reflection, projects to the pile surface, it is possible to express a wide variety of luster by the difference in fineness, flatness, and projection height. You can Then, the base of the cut pile made of the flexible filament having the small fineness and the large flatness is surrounded by the high-rigidity cut pile made of the filament having the large fineness and the small flatness, so that the hand tilt is less likely to occur.

When the content of titanium oxide in the filaments constituting the cut pile is small, the end faces of the cut pile look dark and the side faces have a high reflectance and thus appear bright and bright, and the difference between them causes blurring and whitening. However, in the napped fabric of the present invention, when the titanium oxide content of the filament having a small fineness and a large flatness is made larger than that of the filament having a large fineness and a small flatness, the end face and the side face of the cut pile are The difference in the reflectance of the light becomes small, white blurring or whitening becomes less noticeable, and the filament having a large fineness and a small flatness has a low titanium oxide content, and the end face of the cut pile made of the filament has a darkness. Absorbs reflected light due to hair fall, and has a synergistic effect in combination with the flatness of the cut pile with small fineness and anisotropic reflection. , White blur-whitening phenomenon is improved.

Further, the fineness of the filament having the smallest fineness is set to 2.0 denier or less, the flatness thereof is set to 1.3 to 6.0, and the fineness of the filament having the largest fineness is set to more than 2.0 denier and 8.0 denier or less. , The flatness ratio is 1.0 or more and 1.3
When it is limited to less than the range, the texture becomes more flexible, and hair fall is less likely to occur.

[0019]

EXAMPLE A spinning nozzle having 18 large fineness discharge holes in its center and 32 small fineness discharge holes arranged around it is used to discharge the large fineness in the center. Through the pores, copolymerized polyester (copolymerization component: isophthalic acid, isophthalic acid content: 10 mol%, titanium oxide content:
0.03% by weight, and polyethylene terephthalate (titanium oxide content: 0.6
(Wt%) is spun and stretched to obtain a 3.7-denier high-fineness filament (flatness: flatness:
There are 18 filaments (1.0%, hot water shrinkage: 15%), and a fine filament of 1 denier (flatness: 4.0).
%, Hot water shrinkage ratio: 5%) A multifilament yarn having 32 filaments (total fineness: 100 denier, total filament number: 50) was produced.

The above-mentioned multifilament yarn (100 denier / 50 filaments) was used as the pile yarn, and the polyester multifilament yarn (100 denier / 50 filaments) was used as the ground yarn. Double knitted fabric (density: 44 courses x 22 wales)
The pile yarn was cut in the middle of the two knitted fabrics to separate the two knitted fabrics, and the resulting two fabrics were brushed and preset. Then, the above greige fabric was subjected to high temperature dyeing (130 ° C. × 60 minutes) according to a conventional method, dried, and then subjected to finishing setting and brushing treatment to obtain napped fabrics of Examples shown in the following table.

Table Example Comparative Example Fineness filament in the peripheral area Fineness (denier) 1.0 1.0 Flatness (%) 4.0 1.0 Number of filaments (pieces) 32 32 Composition ratio (%) 32 32 Titanium oxide content (%) 0.03 0.6 Pile height (mm) 2.5 2.5 Large fineness filament at the center Fineness (denier) 3.7 3.7 Flatness (%) 1.0 1.0 Number of filaments (pieces) 18 18 Composition ratio (%) 68 68 Titanium oxide content (%) 0.6 0.6 Pile height (mm) 2.1 2.1

The napped fabrics of the obtained Examples had a very soft texture, and there was no pile fatigue, and even when the pile was strongly pressed with fingers, almost no blurring or whitening was observed.

Comparative Example A spinning nozzle having 18 large fineness discharge holes in its center and 32 small fineness discharge holes arranged around it was used for the large fineness in the center. Copolyester (copolymerization component: isophthalic acid, isophthalic acid content: 10 mol%, titanium oxide content: 0.03% by weight) is discharged from the discharge holes, and polyethylene terephthalate (titanium oxide is discharged from the discharge holes for the fineness of the surroundings). (Content: 0.03% by weight), each of which was spun and stretched to give 3.7 in the center.
It has 18 denier filaments of high fineness (flatness ratio: 1.0%, shrinkage ratio of hot water: 15%), and 1 filament of small fineness (flatness ratio: 1.0%, shrinkage ratio of hot water) around it. : 5%) 32 multifilament yarns (total fineness: 100 denier, total number of filaments: 50)
Was manufactured, and the napped fabric of the comparative example shown in the above table was obtained in the same manner as in the above-mentioned example except that this multifilament yarn was used as the pile yarn. The obtained napped fabric had a soft feeling and no pile fatigue, but the flatness ratio of the surrounding fineness filaments was 1.0, which was not flat, resulting in poor softness and gloss. Since it is anisotropic and has little change, and the amount of titanium oxide is small, white blur and whitening were noticeable when the pile was pressed down strongly with fingers.

[0024]

According to the invention described in claim 1, in a napped cloth in which a cut pile is formed from polyester multifilament yarn, the polyester multifilament yarn has at least two kinds of filaments having different fineness and flatness. It has a small fineness,
Since the tip of the cut pile made of filaments having a high flatness has a large fineness and protrudes higher than the tip of the cut pile made of filaments having a low flatness, the texture is soft. In addition, hair does not fall over, and a mixture of cut piles composed of filaments having different flatnesses gives a unique texture, and anisotropic reflection occurs, so that the gloss changes in various ways.

According to the invention described in claim 2, in the napped cloth according to claim 1, the titanium oxide content of the filament having a small fineness and a large flatness is set to a large fineness.
Since the amount is higher than the titanium oxide content of the filament having a small flatness, even if hair collapse occurs,
Whiteout and whitening are not noticeable.

According to a third aspect of the present invention, in the napped fabric according to the first or second aspect, the filament having the smallest fineness has a fineness of 2.0 denier or less and an aspect ratio of 1.3 to 6.0. The fineness of the filament having the maximum fineness is limited to more than 2.0 denier and less than 8.0 denier, and the flatness ratio is limited to 1.0 or more and less than 1.3, respectively, so that the texture becomes softer and the hand fallen. It becomes more difficult to occur.

Claims (3)

[Claims] 1. A napped fabric in which a cut pile is formed from a polyester multifilament yarn, wherein the polyester multifilament yarn is composed of at least two types of filaments having different filament fineness and flatness. A napped fabric, characterized in that the tip of a cut pile made of filaments having a high ratio has a high fineness and protrudes higher than the tip of a cut pile made of filaments having a low flatness. 2. The napped fabric according to claim 1, wherein the filament having a small fineness and a large flatness has a titanium oxide content higher than that of a filament having a large fineness and a small flatness. 3. A filament having the smallest fineness has a fineness of 2,0.
The denier or less, the flatness is 1.3 to 6.0, and the filament having the maximum fineness has a fineness of more than 2.0 denier and 8.0.
The napped fabric according to claim 1 or 2, which has a flatness of 1.0 or more and less than 1.3 and a denier or less.