JPH0621398B2 - Silk-finished wool pile fabric - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a napped pile fabric for high-class automobile interiors, which has good hair collapse resistance and has a silk-like texture in which uneven hue is unlikely to occur.

[Prior Art] With the development of the automobile industry, there has been a strong demand for improved quality and variety of car seats as automobile interior materials both in terms of functionality and fashionability. Traditionally, woven and knitted napped pile fabrics have been widely used for car seats, but in recent years, the development of napped pile fabrics that do not fall over even with a soft texture, and that do not cause uneven gloss and hue There has been a strong demand for it.

In the prior art, a napped pile fabric using a flat cross-section yarn is used as a napped pile fabric having a soft texture with improved napped feel and transparent feeling, and is disclosed in JP-A-62-21842 and JP-A-63-59454. However, the piled yarn using flat yarn easily causes hair collapse in the short axis direction of the flat cross section due to the load load, has poor recovery after hair collapse, and has directionality for hair collapse. However, there is a defect that the light reflection has a directional property and causes a remarkable gloss difference and a hue difference.

In addition, as a napped pile fabric that does not fall down due to its soft texture, "a filament of at least two types, in which filaments of small fineness are arranged around the periphery of filaments of large fineness, and the tips of filaments of small fineness are arranged. Is raised above the tip of a filament having a large fineness, and unevenness is formed on the tip surface of the cut pile ".
Although it has been disclosed in Japanese Patent No. 941 that the hair falling resistance and the soft feeling of the surface are improved as compared with the conventional product, the filaments having a large fineness are concentrated and distributed in a concentrated manner. Despite this, the seating feel when making a test drive with tailored car seats is not so soft, and it is hard to say that it is comfortable.

Furthermore, since the cut surface of the napped pile is not smooth and has irregularities, it is easy for dust to adhere, and it is difficult to remove dust once adhered, and the napped pile is also cut in terms of hue. There was a drawback that the surface looked white and faded.

On the other hand, in the case of a napped pile fabric that uses this silk for the napped pile part, the surface touch feeling is not always soft, but there is an appropriate repulsion feeling, and the longer the test-ride time, the better the sitting feeling, Almost no collapse, good recovery, and unique luster and hue elegance that cannot be expressed with other materials, but at a high price and other than a special luxury car with special specifications. Had a flaw that could not be specified.

[PROBLEMS TO BE SOLVED BY THE INVENTION] An object of the present invention is to eliminate such a conventional technique, and the napped pile portion is composed of at least three types of single yarn fineness groups having different cross-sectional shapes and single yarn fineness, By using non-similarly shaped cross-section yarns between each group, hair does not fall over while having a soft texture that could not be achieved by the conventional technology, and uneven gloss and gloss while having an elegant luster It is intended to provide a napped pile cloth having a silky texture and free from uneven hue stably at a low cost.

[Means for Solving the Problems] The above-mentioned object of the present invention is to provide a pile length of 1 to 4 using polyester fiber for the ground structure of the woven or knitted fabric and the napped pile portion.
In a napped pile fabric of mm, the polyester fibers constituting the napped pile portion are composed of at least three types of single yarn groups having different cross-sectional shapes and single yarn fineness, and the cross-sectional shape of the single yarn between each single yarn group has three to three protrusions. It is a non-similar shaped cross-section yarn with four, and has a straight part in a part of the outer periphery of the cross-section, and the single yarn fineness of the minimum single yarn fineness group is 0.7 to 1.5d.
The number of single yarns is 30 to 60% of the total number of single yarns, and the single yarn fineness of the intermediate single yarn fineness group is 1.
5 to 3.5 times, the number of single yarns is 30 to 60% of the total number of single yarns, and the single yarn fineness of the maximum single yarn fineness group is 3.0 to 6.0 of the single yarn fineness of the minimum single yarn fineness group. The number of single yarns is 5 times the total number of single yarns.
It can be achieved with a silk upholstered pile fabric characterized by ~ 30%.

The features of the present invention will be described first with reference to the drawings.

FIG. 1 is a transverse cross-sectional view showing an example of the cross-sectional shape of each single yarn that constitutes the polyester fiber used in the napped pile portion of the present invention, and 1 is 1 in the minimum single yarn fineness group having three protrusions. 2 shows one single yarn, 2 shows one single yarn in the next larger single yarn fineness group of the single yarn 1 having four protrusions, the single yarn fineness is twice that of the single yarn 1 and 3 is a protrusion 1 single yarn in the next larger single yarn fineness group after the single yarn 2 having 3 parts is shown. The single yarn fineness is three times that of the single yarn 1 and 4 is the single yarn 3 having 4 protrusions. Next, one single yarn in the single yarn fineness group having the next largest value (the maximum single yarn fineness in FIG. 1) is shown, and an example is shown in which the single yarn fineness is four times that of the single yarn 1. .

In the present invention, the cross-sectional shape of a single yarn between each single yarn group is a heteromorphic cross-sectional yarn having a non-similar cross-sectional shape. It means that they are different from each other. In the case of FIG. 1 above, the cross-sectional shapes of the single yarns 1, 2, 3 and 4 are all non-similar. For example, using a spinneret with different discharge shapes spun simultaneously or separately and mixed, or using a spinneret with the same or similar discharge shape, the discharge amount, spinning temperature, spinning speed, cooling conditions, etc. It means a combination of single yarn fineness groups having different cross-sectional shapes produced by changing the conditions.

In the present invention, the modified cross-section yarn having a straight line portion on the outer periphery of the cross section means that a straight line portion as shown in the drawing is provided on a portion of the outer periphery of the cross section. Means that 2 (a) is an enlarged cross-sectional view of the single yarn 4 of FIG. 1, and FIG. 2 (b) is an enlarged cross-sectional view of the single yarn 3 of FIG.

In FIGS. 2A and 2B, the length of the cross-section in the major axis direction is L, and the straight line connecting arbitrary points A and B on the outer circumference of the cross-section is A
B, when the maximum deviation point on the outer circumference line made by the outer circumference line AB and the straight line AB of the cross section is H, and the perpendicular line from the straight line AB to the point H is CH, the following formulas (1) and (2) are satisfied at the same time. Means to do.

Straight line CH / Straight line AB ≦ 0.05 (1) 0.25L ≦ Straight line AB (...) (2) Therefore, the single yarns having different single yarn fineness with different cross-sectional shapes In the pile pile part using the polyester fiber consisting of, each single yarn is
There is no directionality or deviation in distribution or arrangement,
Since it is possible to randomly distribute from the smallest single yarn to the largest single yarn, extremely strong hair collapse resistance against load load applied to the pile part is exhibited, and cross-sectional shape and single yarn fineness distribution Since the state is extremely close to the cross-sectional shape of natural silk and the distribution state of single yarn fineness, the reflected light of light is diffusely reflected on the cut surface and side surface of the napped pile,
It is possible to express the mild and elegant luster of natural silk.

Further, the napped pile portion of the present invention is unlikely to produce directionality in distribution and arrangement depending on the cross-sectional shape, unlike the conventional product, and is unlikely to cause hair collapse, and even if hair collapses, recovery to a normal state is quick, and Due to the reflected light, there is no hue unevenness or gloss unevenness called "white blur", which is the biggest drawback of conventional products.

Next, the present invention will be described in more detail.

The polyester fiber constituting the napped pile portion of the present invention is a polyester fiber having a molecular structure mainly composed of ethylene terephthalate and has a third component such as oxalic acid, aliphatic dicarboxylic acid such as sebacic acid, or isophthalic acid. It may be a copolymer of 3 to 15 mol% of an aromatic dicarboxylic acid such as phthalic acid, and may contain 3% or less of titanium oxide, calcium carbonate or the like for the purpose of a matting effect and a spinnability improving effect. It may be added,
For the purpose of improving dyeability, polyethylene glycol copolymer, 5-sodium sulfoisophthalate, etc. are used in an amount of 3 to 15
It may be added by mol% or copolymerized.

In the present invention, when the napped pile fabric is used as a car seat, if the pile length is less than 1 mm, it is difficult to obtain a soft feeling, and the pile cracks and the ground see-through easily occur, while the pile length exceeds 4 mm. Therefore, the pile hair is likely to fall down, so the pile length must be 1 to 4 mm.

In the present invention, the polyester fibers constituting the napped pile portion are composed of at least three types of single yarn groups having different cross-sectional shapes and single yarn fineness, and the cross-sectional shape of each single yarn group is a deformed single-sided yarn having a non-similar shape, and a transverse cross section. Having a linear portion in a part of the outer periphery of, as described above, while exhibiting strong hair collapse resistance against a load load on the napped pile surface,
It is an essential element for expressing a silky, mild and elegant luster.

In the present invention, the single yarn fineness of the minimum single yarn fineness group is 0.7 to
It should be 1.5d. If the single yarn fineness of the minimum single yarn fineness group is less than 0.7d, the pile tends to fall easily,
On the other hand, if it exceeds 1.5d, the softness will be impaired, so the single yarn fineness of the minimum single yarn fineness group is 0.7 to 1.5.
must be in the range d.

In the present invention, the number of single yarns in the minimum single yarn fineness group is the total number of single yarns.
It should be 30-60%. When the number of single yarns in the minimum single yarn fineness group is less than 30% of the total number of single yarns, the soft feeling is lost, while when it exceeds 60%, the hair collapse resistance is impaired. Must be in the range of 30-60% of the total number of single yarns.

In the present invention, the single yarn fineness of the intermediate single yarn fineness group needs to be 1.5 to 3.5 times the single yarn fineness of the minimum single yarn fineness group. If the single yarn fineness is less than 1.5 times the single yarn fineness of the minimum single yarn fineness group, the hair falling resistance becomes poor, while on the other hand, 3.5
If it exceeds twice, the softness will be impaired, so the single yarn fineness of the intermediate single yarn fineness group must be in the range of 1.5 to 3.5 times the single yarn fineness of the minimum single yarn fineness group.

In the present invention, the number of single yarns in the intermediate single yarn fineness group needs to be 30 to 60% of the total number of single yarns. If the number of single yarns in the intermediate single yarn fineness group is less than 30% of the total number of single yarns, the pile tends to fall over, the softness is impaired, and the silky mild and elegant luster cannot be obtained. On the other hand, 60%
If it exceeds, the softness of the pile and the depth of hue will be impaired, so the number of single yarns in the intermediate single yarn fineness group must be in the range of 30 to 60% of the total number of single yarns.

In the present invention, the single yarn fineness of the maximum single yarn fineness group needs to be 3.0 to 6.0 times the single yarn fineness of the minimum single yarn fineness group. If the single yarn fineness of the maximum single yarn fineness group is less than 3.0 times the single yarn fineness of the minimum single yarn fineness group, hair falls easily, while 6.0
If it exceeds twice, a feeling of coarseness will come out, so the single yarn fineness of the maximum single yarn fineness group is 3.0 to 3.0 of the single yarn fineness of the minimum single yarn fineness group.
It must be 6.0 times.

In the present invention, the number of single yarns in the maximum single yarn fineness group is the total number of single yarns.
It should be 5-30%. If the number of single yarns in the maximum single yarn fineness group is less than 5% of the total number of single yarns, the hair tends to fall over against the load on the pile surface, while if it exceeds 30%, the soft feeling is impaired and the coarse and hard feeling is felt. Therefore, the number of single yarns in the maximum single yarn fineness group must be in the range of 5 to 30% of the total number of single yarns, and the range of 5 to 15% is more preferable.

In the present invention, at least three types of single yarn groups having different single yarn fineness are classified into a minimum single yarn fineness group, an intermediate single yarn fineness group and a maximum single yarn fineness group in the case of three types of single yarn groups. In the case of four or more types of single yarn fineness, the remaining single yarn fineness group excluding the minimum single yarn fineness group and the maximum single yarn fineness group is taken as the intermediate single yarn fineness group.

Here, a preferable method for producing the silk-finished wool pile fabric of the present invention will be described.

FIGS. 3 (A) to 3 (D) are plan views showing examples of the polymer discharge hole shape of the spinneret for melt spinning the polyester fibers constituting the napped pile portion of the present invention. The discharge holes shown in FIGS. 3 (a) to 3 (d) are arranged in the same spinneret at a single yarn number ratio desired in the present invention. Using such a spinneret, a discharge amount of an ordinary polyester polymer having an intrinsic viscosity [IV] of 0.60 to 0.70 is adjusted by a conventional method so that the single yarn fineness of the minimum single yarn fineness group becomes 0.7 to 1.5d. Is adjusted, melt-spun, cooled, and oiled and wound up. After that, the polyester fiber in the present invention can be obtained by drawing at a desired draw ratio.

The polyester fiber is used as a raw yarn constituting a pile portion of a napped pile fabric and knitted with a tricot or double Russell knitting machine into a raw machine having a knitting density of 35 to 80 courses / inch.

In the case of tricot, napped shirring is applied to make a napped pile fabric with a pile length of 1 to 4 mm. On the other hand, in the case of double russell, the ground structure of the front and back 2 sheets is center-cut with the connecting yarn (polyester fiber forming the napped pile portion of the present invention) to divide it into two napped pile fabrics, and then Adjust the pile length to a length of 1 to 4 mm and cut. In both cases of tricot and double Russell,
By raising the knitting density to 38 to 90 coats / inch by heat-treating it in a dry air at 175 to 230 ° C. to give a knitting density of 38 to 90 coats / inch, a napped pile fabric having a silky texture can be produced.

[Application or Range of Application] The silk napped pile fabric of the present invention is suitable as a material for high-class automobile interiors, and can be widely used for automobile seats, door linings, floors, and the like.

The polyester fiber constituting the napped pile portion of the present invention can also be applied as a raw thread for various woven fabrics and knits of high-grade silk-like materials for clothing such as dresses, blouses, coats and outerwear. is there.

[Examples] Hereinafter, the present invention will be specifically described with reference to Examples.

As a polyester fiber constituting the napped pile portion, a spinneret having four kinds of discharge hole groups with different discharge hole shapes in the same spinneret is used, and a polyethylene terephthalate polymer having an intrinsic viscosity [IV] of 0.67 is used. 290
After spinning at 0 ° C. and a spinning speed of 1500 m / min, the obtained unstretched yarn was stretched by a usual stretching machine to obtain the following polyester fibers.

(1) 50 ^D −48 ^fil Composition: (0.57 ^d × 24 ^fil ) (1.14 ^d × 12 ^fil ) (1.60 ^d × 8 ^fil ) (2.27 ^d × 4 ^fil ) (2) 75 ^D −48 ^fil Composition: (0.85 ^d × 24 ^fil ) (1.71 ^d × 12 ^fil ) (2.56 ^d × 8 ^fil ) (3.41 ^d × 4 ^fil ) (3) 100 ^D −48 ^fil Composition: (1.14 ^d × 24 ^fil ) (2.27 ^d × 12 ^fil ) (3.21 ^d × 8 ^fil ) (4.55 ^d × 4 ^fil ) (4) 150 ^D −48 ^fil Composition: (1.70 ^d × 24 ^fil ) (3.41 ^d × 12 ^fil ) (4.81 ^d × 8 ^fil ) ( 6.82 ^d × 4 ^fil) then, the polyester fibers stretched and napped Parufu yarn, and ground yarn of 100 ^D -36 ^fil polyester multifilament yarns of round cross-section of, using a tricot knitting machine,
Density 66 ^course 28 ^wales was used as a basic condition, and the tricot knitted fabric was knitted by modifying according to the single yarn fineness.
The pile surface of the obtained raw knitted fabric is brushed and shirred,
A napped pile fabric product was obtained by finishing the napped pile length of 2.2 mm, pre-setting, high-pressure jet dyeing, and finish setting. The resulting products were subjected to a load sensory test to evaluate the feel of the hair such as resistance to hair fall, gloss, hue, and touch.

As a comparative example, a 75D-36 ^fil round cross-section yarn, a triangular cross-section yarn, and a flat yarn were knitted in the napped pile portion by the same method,
The finished product was evaluated. Table 1 shows the evaluation results of the products.

In Table 1, Experiment Nos. 1 and 4 to 7 are comparative examples for clarifying the effect of the present invention.

In Experiment No. 1, the single yarn fineness of the minimum single yarn fineness group was 0.57 d in the raw yarn constitution of the napped pile, which was smaller than the range of the present invention, and thus the hair falling resistance was insufficient.

In Experiments No. 2 and No. 3, the napped pile raw yarn composition is within the scope of the present invention, and therefore, there is no problem with hair collapse due to a load test of 60 kg, and a mild and elegant luster and deepness are obtained. A certain hue was at a level comparable to that of natural silk. Moreover, the soft feel was not as soft as the surface like the conventional products, but there was a soft feeling with repulsion, and the sitting feeling tailored to the seat was the most comfortable.

In Experiment No. 4, the single yarn fineness of the minimum single yarn fineness group was 1.70 d in the raw yarn constitution of the napped pile, which was larger than the range of the present invention, and thus the soft feeling was insufficient.

Experiments Nos. 5, 6 and 7 used conventional polyester fibers having round cross-section yarns, triangular cross-section yarns and flattened yarns having an oblateness of 3.0. Experiments Nos. 2 and 3 of the present invention were used.
Compared with, all were significantly inferior in almost all items.

Example 2 Polyethylene terephthalate polymer having an intrinsic viscosity [IV] of 0.67 using various spinnerets shown in Table 2 for the purpose of confirming the cross-sectional shape of polyester fibers constituting the napped pile portion and the effect of the single yarn fineness and the number of single yarns. Using a spinning temperature of 29
Various unstretched yarns were obtained by spinning in a usual manner while adjusting the discharge rate at 0 ° C. and a spinning speed of 1500 m / min.

Various combinations of the obtained undrawn yarns were changed as shown in Table 3, and the yarns were combined and drawn to obtain various polyester fibers. Using the polyester fiber as a napped pile yarn, a napped pile fabric was finished in the same manner as in Example 1 and the same evaluation was performed, and the results in Table 3 were obtained.

In Table 3, Experiment Nos. 8, 12, 13, 16, 17,
20, 24, 25, 28, 29 and 32 are comparative examples for clarifying the effect of the present invention. Experiment No.1
0 is the optimum common level when confirming each factor effect.

Experiments Nos. 8 to 12 confirm the effect of the single yarn fineness of the minimum single yarn fineness group. In Experiment No. 8, since the single yarn fineness was small, the pile easily fell over, while in Experiment No. 12, the single yarn fineness was too large, and thus softness could not be obtained. On the other hand, since Experiment Nos. 9 and 11 were within the scope of the present invention, the hair falling resistance and the soft feeling were good,
In particular, in Experiment No. 10, all the items were within the central range of the present invention, so that an extremely good product texture was obtained.

Experiments Nos. 13 to 16 confirm the effect of the number of single yarns in the minimum single yarn fineness group. In Experiment No. 13, the softness was poor because the ratio of the number of single yarn was low. On the other hand, in Experiment No. 16, the ratio was high, and thus the hair falling resistance was poor. On the other hand, since Experiment Nos. 14 and 15 were within the range of the present invention, the hair falling resistance and the soft feeling were good.

Experiment Nos. 17 to 20 confirm the effect of the single yarn fineness of the intermediate single yarn fineness group. In Experiment No. 17, the single yarn fineness was small, so the hair fall resistance was poor, while in Experiment No. 20
The single yarn fineness was too large, resulting in poor soft feeling. On the other hand, since Experiment Nos. 18 and 19 were within the range of the present invention, both the hair falling resistance and the soft feeling were good.

Experiment Nos. 21 to 24 confirm the effect of the number of single yarns in the intermediate single yarn fineness group. Experiment No. 21 has a low ratio of the number of single yarns, and thus has a poor hair collapse resistance, while Experiment No. 2
Since No. 4 had a high ratio, the soft feeling was poor. On the other hand, since Experiment Nos. 22 and 23 were within the range of the present invention, both the hair falling resistance and the soft feeling were good.

Experiment Nos. 25 to 28 confirm the effect of the single yarn fineness of the maximum single yarn fineness group. In Experiment No. 25, the single-filament fineness was small, and thus the hair fall resistance was poor. On the other hand, in Experiment No. 28, the single-filament fineness was too high, and the softness was poor. On the other hand, since Experiment Nos. 26 and 27 were within the range of the present invention, both the hair falling resistance and the soft feeling were good.

Experiment Nos. 29 to 32 confirmed the effect of the number of single yarns in the maximum single yarn fineness group. In Experiment No. 29, the ratio of the number of single yarns is low, and thus the hair fall resistance is poor. On the other hand, in Experiment No. 32, the ratio is too high, so that the gloss changes to a glossy taste and the soft feeling is poor. It was In contrast, experiment N
Since O. 30 and 31 were within the range of the present invention, the hair falling resistance and the soft feeling were good.

[Effects of the Invention] The silk-finished wool pile fabric of the present invention has the following effects.

(1) In the napped pile portion, individual single yarns are randomly distributed without causing directionality or deviation in distribution or arrangement depending on the cross-sectional shape, and therefore extremely strong against a load applied to the pile surface. In addition to exhibiting hair fall resistance, even if hair falls, it quickly recovers to the normal state.

(2) Since the cross-sectional shape and distribution of single yarn are very close to those of natural silk, like natural silk, the reflected light is diffusely reflected on the surface and sides of the pile, giving it a mild, elegant luster and depth. Develops hue.

(3) Since the reflected light is diffusely reflected in a complicated manner, there is no occurrence of uneven hue or uneven gloss called "white blur", which is the biggest drawback of conventional products.

(4) Unlike the conventional product, it does not pursue a superficial soft feeling, but the whole napped pile part has a soft feeling of repulsion, and the seating feeling when making a test ride with a seat is extremely comfortable. is there.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of the cross-sectional shape of each single yarn constituting the polyester fiber used for the napped pile portion in the present invention. 2 (a) and 2 (b) are examples of the modified cross-section yarns of the present invention, and are enlarged transverse cross-sectional views of a single yarn for explaining a part of a straight line on the outer periphery of the cross-section. FIGS. 3 (A) to 3 (D) are plan views showing examples of the polymer discharge hole shape of the spinneret for melt spinning the polyester fibers constituting the napped pile portion in the present invention. 1: 1 single yarn in the minimum single yarn fineness group 2: 1 single yarn in the next largest single yarn fineness group after single yarn 1 3: 1 single yarn in the second largest single yarn fineness group after single yarn 2 Thread 4: 1 single thread in the maximum single thread fineness group

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-63-126941 (JP, A) JP-A-63-59454 (JP, A) JP-A-63-145457 (JP, A) JP-A-1- 148835 (JP, A)

Claims (1)

[Claims] 1. A napped pile cloth having a pile length of 1 to 4 mm, which is formed by using polyester fibers for the ground structure of the woven or knitted fabric and the napped pile part, and the polyester fibers constituting the napped pile part have different cross-sectional shapes and single yarn fineness. It consists of at least three types of single yarn groups, and the cross-sectional shape of the single yarn between each single yarn group is a non-similar-shaped modified cross-section yarn having 3 to 4 protrusions, and a straight portion is provided in a part of the outer periphery of the cross-section. The single yarn fineness of the minimum single yarn fineness group is 0.7 to 1.5d, and the number of single yarns is 30 to 60% of the total number of single yarns, and the single yarn fineness of the intermediate single yarn fineness group is the smallest. It is 1.5 to 3.5 times the single yarn fineness of the single yarn fineness group, the number of single yarns is 30 to 60% of the total number of single yarns, and the single yarn fineness of the maximum single yarn fineness group is the minimum single yarn fineness group. Single yarn fineness of 3.0
〜6.0 times, and the number of single yarns is 5 to 30% of the total number of single yarns.