JPS5818443A - Polyester fabric having flash like gloss and production thereof - 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 polyester fabric having a flash-like luster and made of differentially shrinkable multifilament mixed yarn.

In recent years, various attempts have been made to use polyester filament fabrics to approximate the texture of natural delicate fabrics, especially silk fabrics, and with advances in yarn and fiber processing technology, the appearance and texture of polyester filament fabrics has improved. It's different from the standard. On the other hand,
There is also a strong demand for a new appearance and a strong desire for changes in the surface of the weave, and for this reason, pongee style and II style silky fabrics have been developed. The woven fabric of the present invention has also been developed to meet such demands for surface changes.

Traditionally, woven fabrics, especially filament woven fabrics, have a
It was known that a defect called ``one hanging'' occurs.This 0th 6th'' occurs due to the opening process from the yarn manufacturing process to the weaving process. There are many
The 'sink' area is structurally different from other normal areas due to the force of abnormal tension being applied during fabric manufacturing (due to the dyeing and finishing process), and the appearance is different from other normal areas. It has a strong luster and is hard in texture.Moreover, the disadvantage of "1" is due to non-artificial K.
, and it occurs in unexpected places.

However, the present inventors believe that the above-mentioned luster is unique due to the difference in the bending structure of the threads constituting the fabric, and that the ugly structure of the threads is spread over the entire surface of the tc material or artificially. If substantially uniformly distributed in a given location, variations in gloss will not result in non-uniform 'whiskers', i.e. defects, and will result in a fabric with a flash-like surface gloss. In addition, the present invention was achieved by paying attention to the above and solving the problem of hardening of the texture which was caused by the 1" defect.

That is, the present invention provides a fabric containing polyester multifilament A-fiber yarns, which has the following features: Ratio (major axis/
(b) The mixed fiber yarn must have a shorter fabric constituent yarn length and include a multifilament group with greater cohesiveness. In the cross section of the aggregate, the axillary multifilament groups are distributed in a boot-sock shape, and the distribution position is in the longitudinal direction of the ink line thread KfE? transfer or reverse,
41. The warp and/or weft are made up of mixed yarns that satisfy all the conditions that a part of the yarn is exposed on the surface of the fabric.
A bo9z stell fabric having a flash-like luster as an I image, such a fabric has a ring water shrinkage rate of 3 to 1 o, for example.
H, and two or more types of polyester multifilament yarns having a ring water shrinkage rate of S ~ 15- and a difference in tuna boiling water shrinkage rate of 1- or more are kneaded to weave a wrinkled warm fiber yarn, After that, the offal is subjected to scouring and relaxing treatment, and further, by contact heating treatment at a high temperature of 100 T: or more, and at a temperature higher than the scouring and relaxing treatment temperature, and under tension. can get.

Below, we will deduct the tax in detail.

The polyester multifilament yarn used in the present invention is
If it is a polyester multifilament group such as polyethylene terephthalate, polybutylene terephthalate, polypropylene terephthalate, etc., it may be a copolymerization of these, or a blend and/or copolymerization of another third component. .

However, since the object of the present invention is to obtain a fabric having a luster-like luster, the polyester multifilament yarn has a titanium oxide content of at most 10% by weight. is preferable, and r
The r-face carved shape may be a circular i11 surface, but it is more preferable to have an irregular cross section such as a triangular cross section, a square cross section, etc. that allows specular reflection.

In the present invention, it is necessary to use such a polyester multifilament boat having a ring water shrinkage rate of 3 to 10% and 5 to rs%, and a 2s or more boat with a difference in ring water shrinkage rate of 1- or more. There is.

If the ring water shrinkage rate of the highly shrinkable polynisder multifilament yarn is less than 5 cm, the bent structure of the yarn constituting the fabric will not provide flash-like luster, as explained below, and the present invention unable to achieve the goal. or,
Similarly, if the wrinkle boiling water shrinkage rate of the high shrinkage polyester multifilament system exceeds 115%, the texture of the fabric becomes hard or the gloss of the fabric surface decreases, which is undesirable. Regarding low-shrinkage polyester multifilament yarns, if they are used in a range where the ring water shrinkage rate is less than S- or exceeds 1o, good texture cannot be obtained as a warm-fiber woven fabric. . That is, in the fabric of the present invention, some of the yarns constituting the fabric are given a yarn structure that occurs when 'sinkage' occurs, and the other part is provided with a normal fabric structure. Because it gives the yarn its own structure, the difference in the ring water shrinkage rate is at most xz%@&''e, and if it is larger than this, the arrangement of the low shrinkage filaments will be disturbed and the gloss will decrease. Otherwise, it is unfavorable from the viewpoint of hardening of the texture.

Furthermore, as described above, the present invention imparts different yarn bending structures to the yarns constituting the weaving w.

If the difference in ring water shrinkage rate is less than 1qb, it will be difficult to do so, and it will also be difficult to distribute the fibers in a highly shrinkable yarn, making it impossible to impart flash-like gloss. In addition, it is ideal that the water production shrinkage rate difference is 6 to 1Oφ, but 1
~ In 6th string, the fluctuation in the ring water shrinkage rate of each thread is small #
M7 luster-like gloss can be easily obtained.

In the present invention, two or more types of polyester multifilament yarns having different ring water shrinkage rates are used, and among the polyester multifilaments, a proportion of the polyester multifilaments with a higher shrinkage rate is the same as that of the entire mixed fiber yarn. The polyester multifilament yarn having a weight of 20 to 80 and having a weight of 211 or more is preferably mixed.

When the mixing ratio is less than 20%, it is difficult to obtain a flash-like gloss, and when it exceeds 80% by weight, the 7-lash-like gloss similarly decreases and the texture of the fabric becomes hard, which is considered undesirable. In addition, the state of one fiber of several yarns is very small (the high shrinkage polyester multifilament yarn and the low shrinkage polyester multifilament yarn are all (the fibers are about t-thick and do not separate to form an organ). For example, a Jllll yarn having an interlacing degree of 0 or less is preferably used.

The degree of interlacing referred to here is determined by directly setting the interlaced yarn under a load of a 2 f /d, inserting a hook with a single yarn denier XLop load into the interlacing yarn, and letting it fall under its own weight. When the load stops due to entanglement of the interlace, the interlace degree is set to 1. Next, insert a hook under that stopping point and repeat the operation of dropping it until it stops, and define the interlace degree by the number of stops. ) Warm yarn yarns may be untwisted as the luster decreases as the degree of interlacing increases, but it is preferable that the number of twists is less than 100 times per piece. 1 that occurs with the thread loss of
A slight twist is sufficient.

Such S fiber yarns are arranged in the warp and/or weft to weave, and the woven fabric is subjected to a scouring/relaxation treatment. The temperature conditions for such scouring and relaxing treatment are not limited to %K11lll, but the temperature is 60°C to xoot:
It is preferable to immerse it in hot water of 1 m degree. In this case, depending on the koji collection rate of the mixed fiber yarn, the occurrence of "1 wrinkle" can be seen on the surface of the fabric, so the polyester multifilament yarn is tensed to the extent that such wrinkles do not occur, and the polyester multifilament yarn is also shrinkable. It is preferable to carry out the treatment under a tension that will cause sufficient shrinkage.When the scouring and relaxing treatment is performed under such tension, the low-shrinkage polyester multifilament (A) is mainly applied to the outer layer of the mixed yarn. Also, the high shrinkage polyester multifilament yarn is mainly concentrated in the inner layer of the mixed iron yarn.

In this way, after developing the cohesiveness of the highly shrinkable polyester multifilament yarn in the warm fiber yarn,
Contact heat treatment is carried out under tension at a high temperature of 00°C or higher, and as high as 10°C.

This emergency 5I! To process offal in the state, S~ per warp
This can be carried out by applying a tension of 3019/d· to the fabric, and contact heating treatment is preferably carried out using a plurality of heating cylinders/drums that are attached to each fabric one by one.

# In order to enhance the effect of contact application III & Kairi, there is a slight speed difference between the circumferential speed of the wrinkle heating cylinder/drum and the transport speed of the fabric, and the fabric is processed so that it slides on the drum surface. It is more preferable that

Due to this elevated and contact heating treatment under The ratio of the long axis to the short axis (length &/or length) of 2 or more can be obtained.

Here, the aggregate cross section means that when the cross section of the 5IIL yarn is cut, the individual eye 1 fences that make up the # mixed fiber yarn.
8443(4) is not a cross section of a lament, but a cross section showing the form of the entire yarn. In addition, in the cross-section of the aggregate of the mixed yarns, the highly shrinkable polynisder multifilament yarns can be made more cohesive by contacting and heating under tension, and at the same time, the fibers forming the fibers become trapped. The length is shorter than that of the other low shrinkage polyester multifilament yarn. Here, the fabric constituent yarn length refers to the constant length on the fabric,
It refers to the length of the yarn itself that makes up a certain length of the fabric, and if the yarn bending is large in the fabric, the length of the yarns that make up the fabric is large and the yarn bending is small. The fiber length of the fabric is small.

Furthermore, in the mixed fiber yarn, the multifilament fibers with high cohesiveness are distributed in a pulsing pattern, and the position of the pattern distribution changes, that is, is transposed or reversed. However, even though it is said that multifilament yarns with high cohesiveness are distributed in a Nordsk shape, this does not mean that multifilament yarns with low cohesiveness (i.e., obtained from low shrinkage multifilament yarns) are separated. Due to entanglement, filaments obtained from low shrinkage multifilament yarns are mixed in the pull-like multifilament group.

FIG. 1 is a cross-sectional view schematically showing the 111th plane of the mixed yarn constituting the fabric of the present invention. As shown in FIG. 111 (a), the cross section of the aggregate is substantially flat, and the ratio b/a of the major axis to the minor axis 41a is 2 or more,
A group of multifilaments 1 having a short fabric constituent thread length and having a large easterly distribution is distributed in a pultsuk shape (collective shape), and
In the cross-sections of the mixed yarn in different longitudinal directions in FIGS.

A fabric whose warp is a mixed yarn having such an aggregate cross section has a flash-like luster.

111L2flJ is a plan view showing an example of a fabric with a plain weave structure of the present invention, in which #mixed fiber yarn 3 constitutes the warp,
Since the mixed fiber yarn has a flat shape, 10 groups of multi-filament fibers with great focusing properties appear and disappear on the fabric surface,
Ma/l with low convergence.

Thifilament 2 also has a surface shape that appears and disappears.

A group of multifilaments 1 and 1 thousand filaments 2
Group 0 means that the fabric is not made up of separate threads, but as a single thread, and that the proportions that appear on the surface of the fabric are varied within or between the threads. ro f). Moreover, the group of multifilaments 1 and the group of multifilaments 20 have different lengths of yarns constituting the fabric, and have different bending structures of the yarns.

By adopting such a surface morphology of the fabric, a flash-like gloss can be obtained, and a fabric with a novel surface effect can be obtained. In addition, since the yarns with different bending configurations are arranged throughout the fabric or at predetermined positions, and low shrinkage filaments are present at the same time, one sink area of the conventional fabric is reduced to 10. Hardening of the texture does not occur.

In addition, in order to make the texture of the obtained fabric even more flexible and have excellent drape properties, steps 15--
There is no problem with carrying out an alkali treatment of ZS%, and it is preferable to carry out the storage of the fabric of the present invention after carrying out the above-mentioned heating contact treatment.

Examples will be explained below.

EXAMPLE A polyester multifilament yarn having a triangular cross section was varied to obtain yarns having various water production shrinkage rates as shown in Table 1, and these polyester multifilament yarns having different shrinkage rates were combined and mixed. That is, 50% by weight of a positive ester multifilament yarn having a high boiling water shrinkage rate,
A polyester multifilament yarn having a low boiling water shrinkage rate was combined with 50% by weight and mixed with an interlace degree of 5. The obtained warm-woven yarn was woven in a plain weave without twisting (warp m yarn, warp density 33 threads/a 11, weft density 30 threads/a), and the resulting fabric was scoured and After the relaxation treatment, a contact heating treatment was performed at a fabric tension of xswg/d· and a cylinder/drum surface temperature of 110° C., followed by presetting and an alkali IIlkm treatment of zs%.The results are shown in Table 1.

N12~l@6 had a 7 luscious luster and a good texture, but had a hazy 1. In case of No. 7, a somewhat satisfactory flash-like gloss was obtained, but the texture was poor, and in case of No. 8, both gloss and texture were poor.

Table 1 In addition, when we cut the cross section of Kame 1-ML8 and examined the cross section of the aggregate of the warm fiber yarns that made up the fabric, we found that none of the fabrics had flash-like luster. The ratio of major axis/breadth axis was 2 or more, and the ratio of the major axis to minor axis was 41, and the ratio was 19 in the case of N14.

On the other hand, the ratio of the fabric of NL8 is tS.

This was similar to that of yarns constituting ordinary fabrics, and no change in the position of Finoment 8F, which had a high bundling property due to high-boiling water shrinkage yarns, was observed in the yarn length direction.

[Brief explanation of drawings]

Fig. 11i1 is a cross-sectional view schematically showing the cross section of the warm fiber yarn constituting the fabric of the present invention, and Fig. 2 is a plan view showing the cross section of the fabric with a plain weave structure that is an embodiment of the present invention. . 1...Polyester multifilament yarn with high bundling property, 3...Mixed fiber yarn

Claims (1)

[Claims] 1. In a fabric made of polyester multifilament spiral yarns; Ratio to diameter (long diameter/rule 1
(b) The #S fiber yarn includes a multifilament having a shorter fabric constituent yarn length and greater cohesiveness (c) #Mixed fiber yarn In the cross section of the aggregate of the strips, the multifilament groups are distributed in a block shape, and the number distribution position changes in the longitudinal direction Kf8 of the mixed yarn, and a part of them is exposed on the surface of the fabric. 1. A polyester fabric having a flash-like luster, characterized in that the warp and/or the weft are composed of mixed yarns that satisfy the following conditions. 2. Polyester multifilament yarn with a diving shrinkage rate of 3 to xo% and polyester multifilament yarn with a diving shrinkage rate of 5 to 15% for 2 seconds or more so that the difference in the diving shrinkage rate is 1 inch or more. The fibers are combined and blended, the mixed yarns are woven, and then the #fabric is subjected to a scouring/relaxation treatment, and then subjected to a dazzling scouring/relaxation treatment at a high temperature of 100°C or higher! A method for producing a polyester fabric having a flash-like luster, which is characterized by carrying out contact and heat treatment while maintaining tension at a temperature that is higher than that of a slinger.