JPS5818416A - Composite filament for silk cloth-like polyester knitted fabric - Google Patents

Abstract

PURPOSE:The titled composite filaments, in which two kinds of polyester components having specific different intrisic viscosities are joined to one abother in the specific side-by-side cocoon shape, and having a quiet luster, crispy feeling, springiness, etc. CONSTITUTION:Composite filaments having two kinds of polyester components, e.g. polyethylene terephthalate, having an intrinsic viscosity >=0.70 for the higher viscosity side and a difference in intrinsic viscosity >=0.2 joined to one another in the side-by-side shape, the cross section of partially overlapped two circles and the segment of a line connecting the intersecting points of the two circles as the joint of the two components. The content of TiO2 is 0-0.1wt%, and the lower content is preferred. The ratio between the radius of curvatures (R1) and (R2) of the two circles is 0.8-1.25, and the length (X) of the line connecting the intersecting points is preferably 1-1.8times that of the radius of curvature of the smaller circle.

Description

Detailed Description of the Invention Invention #f, Network Fabric 1III Composite 7 for Polyester Knitted Fabrics
Kll the 4 pieces.

Conventionally, II! Liester Ik's thin fabric - jIIIl, which has the luster and texture of silk fabric, was rare.
It is a well-known method to make strong twist fabrics such as dechine using polyester blend A with different degrees of elasticity and shrinkage (k) to maintain silk-like luster and wind life, but Polynis? ＃It is made of woven fabric and is much more expensive than thin fabrics.In order to achieve a luster of 11m close to that of silk,
At first, the cross section of the ester fiber is triangular and non-circular.
Km! However, by quickly changing the fiber cross-section to a non-circular shape, the knitted fabric obtained by using the unpleasant insects has a slimy feel peculiar to the Hewei fiber Jllll and a glaring round shape. The metallic luster remains, and the texture is flat and smooth, without the constant bulges that are unique to rope, and it is a far cry from the texture of II4 textiles. It kissed. There, F151-287 S S No. KE@ is a non-circular box and has a difference in intrinsic viscosity. Extend compound strips
Later OII tension-relaxation heat treatment! How to do this can be explained,
However, the knitted fabric made from the yarn obtained in this way is improved compared to the conventional non-circular cross-section ordinary ester yarn, and has a texture close to that of silk. % still has a metallic luster.

Moreover, it is not only insufficient in terms of texture, but also lacks tension between tissue rings and a firm texture. Furthermore, since the composite thread after stretching is repeatedly subjected to tension-relaxation heat treatment, the thread manufacturing process is long and complicated, and there is a drawback that the thread is relatively expensive in terms of cost.

The purpose of the present invention is to provide a 74-kment for polyester knitted fabrics that has a calming texture, a tight feel between silk fabrics, consistent bulge, and moderate firmness and tension. The purpose of this product is to provide knitted fabrics with a texture and luster that have never been seen before when using merry ester yarns, such as knitted silk fabrics.

Previously, the present inventors proposed the following in order to produce a silk-fine polyester knitted fabric in Japanese Patent Application No. 54-'49-158.
did. That is, two types of polyesters having an intrinsic viscosity of at least α70 on the high viscosity side, an increase in intrinsic viscosity of 12 or more, and containing titanium dioxide of 0 to α1% by weight are heated at a speed of 800 to 1500 s/-. Composite spinning is performed eccentrically, 2. Stretched 5 to 40 times, certain - is 1
After stretching 5 to 45 times, heat treatment is performed at a tension rate of -5 to -15% to obtain a composite drawn Bonester yarn with a pitch of 10 to 25%,
Next, the polyester yarn is knitted and then treated with a runny nose. With this invention, it is possible to obtain a knitted fabric with nine silk loops that has a calm luster, a textured texture due to the regular grain on the surface, and has a certain degree of stiffness.

However, 0m*luxury has an even better gloss and texture, and approaches the gloss and texture of SI. - The polyester between the tissue rings is at least a70 and the seat of intrinsic viscosity is (L2 or more). A composite frame for silk fabric-like polyester knitted fabric whose surface has a shape in which two circles partially overlap #IK and whose line segment connecting the intersections of the circles is used as the cap of the two components. be.

In the present invention, 1% fh polyester refers to polyethylene terethalate or ethylene terethalate 9696
This is a copolyester having the above II units. The combination of the composite components has a low crimp-producing ability of the two types of polyester O, resulting in a flat product that lacks fine grain and bulge due to crimp development during treatment with standing water during dyeing of the knitted fabric. Therefore, the gloss will not be as calm, and Ika K will have the same gloss as polyester plyte yarn 4I, so store it. It is important that the intrinsic viscosity of the higher viscosity polyester of the two types of polyesters to be composited is IIL70 or higher, preferably (L78 or higher). However, it is not possible to maintain appropriate firmness such as tension and stiffness.In other words, the stiffness characteristic of knitted fabrics can be changed to one with stiffness by using high viscosity polyester.

Polyester with an intrinsic viscosity of 0.70 or more can be prepared by inserting a regular polyester chip into an i! It can be obtained from K that is mutually congruent.

In the present invention, the two types of polyester components are:

It is possible to contain titanium dioxide (Tie), but it is preferable to have a small amount of titanium dioxide (Tie), and it is desirable that at least 1a of Tie content is 0-0.1% by weight.

More flt, 2WI! , and the content of K T10 Maro.

0 to 11% by weight. When the amount of JTIO increases, the luster of the fruit becomes dull due to the droplets forming on the young fruit.

The composite 74 component of the present invention is made by joining two types of polyester components as described above to ditobinide, and the cross section Ii shape has two circles in a portion 1111 and a violet shaped pot 9. It has the shape as shown in the figure, and the 2
The Takebu 0-shasha part is located on the line segment connecting the intersection of the two circles. The size of these two circles is *Tei radius C1
11%L in 1t diagram? ff1f) sat'L ea
) ') It (Rt/iEm) Te (L 8 ”
The value is preferably 1.25, and at this level, the crimp development force of the different viscosity polyester # sections can be maintained to a high degree. Also, the length of the line segment connecting the intersection of the two Cs is X)
is *i,, ``l, whichever is smaller, 1.0 to 1.8
It is believed that it is twice as large. Length
If the length is too long, the shape of the two circles (partially overlapping) will become unclear, as shown in Figure 1g4, and if other conditions are met, it will look like silk at first glance. Although it is possible to obtain a knitted fabric having a texture, it is different from the fabric having the luster and texture between the knitting rings as in the present invention. On the other hand, when the composite filament of the present invention having an m-shaped cross section is knitted, the surface of the knitted fabric has constrictions, and the No. 2a joints and circular parts on the outer periphery appear randomly, resulting in a special luster with irregularities. . In addition, by forming such a knitted fabric and crimping the filaments, minute grains can be created on the surface, and the gloss can be made subdued. KF that increases this crimp expression
i. It is preferable that the filament weighs 10 to 25 g6 at a time.

The composite material of the present invention is obtained by composite spinning the above-described ester using a commonly known spinning nozzle and winding it at a spinning speed of, for example, 800 to 1,500@I/-. What can be obtained from K by stretching the composite Sung-yen by 2.5 to 4.0 times, or by tensing it at a tension rate of -3 to -15% at night after stretching it to 2-5 to 5 times. I can do it. If you want to extend it, touch it with an electric plate Km at 135-160°C while groaning to partially crystallize it. In addition, tension heat A after stretching
ll, heat the hot plate KI at a temperature slightly higher than the temperature at the time of extension [while touching it! It is preferable to carry out the tension treatment under these tightening, stretching and tension heat treatment conditions.

This is a condition that should be considered in determining the degree of the composite 74 pieces to be obtained and in improving the crimp performance.

In addition, the crimp development characteristics of this composite 74 tsumenshi are as follows:
IItL that 1q/40 load lower trout Kyochu #) taml shrinkage (hereinafter referred to as load lower return) is 15% or more.
&%, where one load is measured as follows. Composite stretched polyester s/A was taken from Kaya, and 100 Misaki/
Apply the load on the rope and measure the length (-).The load is lq at the zeroth order.
After replacing the load with /- and immersing it in the standing water for KIO minutes,
Air dry and measure length b). This is IIIK Compotsutsubo-nobu-Merieste yarn Rikishichi is immersed in the nose for 10 minutes without any load, air-dried, and the length C) is measured with 100 tablespoons of K/40 load, and this hecO value. From the first two, load lsw/<! Load servant-, xto.

When the load per yield is 15% or more, the graininess on the surface of the knitted fabric can be made even better in water retention after knitting, and the moldy bulge can be highlighted. It is.

In order to knit with Iguzi, the fineness of the composite filament is F.
120~60d, preferably 30~Sod. Furthermore, it is better to have a relatively thick single yarn fineness of 2 to 64, and as a synergistic effect with using polyester with an intrinsic viscosity of 170 or higher, the tension and waist between the knitting loops can be adjusted to an appropriate level. However, if the single yarn fineness exceeds 6d, it may become too stiff, so 1FtL<1.The 11-knit structure may be warp knitting or circular knitting, but the ease of knitting and production cost From this point of view, circular knitting is advantageous, and any of smooth, punchy roman, ten 4! etc. is fine.

The knitted circular knitted fabric may be processed in the same manner as ordinary polyester products.

According to the present invention as described above, the silk fabric has a calm luster that is not metallic luster, and has both the crispness and fullness due to minute grains on the surface, moderate hardness, and the suppleness of a thin fabric. You can get knitted fabrics.

Hereinafter, the present invention will be explained in detail with reference to Examples.

Example 1 Polyethylene terephthalate (hereinafter referred to as PET) having different intrinsic viscosities and contents of (LOI% by weight) were combined as shown in Table 1, and two 42-ment polyethylene terephthalate (hereinafter referred to as PET) were combined from a spinneret at a discharge ratio of 1:1. The yarn was melt-spun and rolled at 1ooOs/- to obtain a composite undrawn yarn. Each unrolled yarn was stretched in the usual way, so that the yarn was 20% once and the fineness was 404. I made it.

Each of the obtained Enjin threads had a cross section as shown in Fig. 2,
After scouring this with a 40 gauge smooth IIL at ta°C, it was subjected to 14 colors of 't' at 130°C for 1 minute without presetting.After washing and smearing, the finish was set.

The results are shown in the first barley.

Combinations of high viscosity 111'ET and intrinsic viscosity Fi (IICTf of 92 types on L7O1Q) and WA viscosity erosion of 0.20 or more are among silk fabrics with both gloss and texture.

Example 2 TIO, intrinsic viscosity as a member of content is 189 and 1600
PET was combined at a discharge ratio of 1:1 as in Example 1, and a stretched yarn with a cross section as shown in FIG. 2 was obtained in the same manner as in Example 1, and then a 40 gauge smooth cloth was obtained. The results are also shown for the second wheat.

Table 112 T I A combination of PET with a high Om content results in significantly inferior gloss. The content of Tl01 is preferably such that at least one of the PETs has an O#α101% content.

Examples & PET with an intrinsic viscosity of (L89 and TIO) and PIET with an intrinsic viscosity (Li2 and TlO, content of Q and 10% by weight) were mixed in a ratio of 1:1 by changing the distance between the two holes of the spinneret. Each was melt-spun at the discharge ratio and fused and synthesized immediately after the spinneret hole.The operation after winding was the same as in Example 1 to obtain a rolled yarn with a cross section as shown in Figure 2. A smooth cloth was obtained.

The results are shown in number 51.

Fifth wheat example 4 Intrinsic viscosity Q, 8? 'fTiO*-free l, -tP
ET and solid 11 viscosity jf (lL6o and riG = content is a
Composite spinning was carried out by using a spinneret to assemble PET with a toit density of 10% as shown in Fig. 1. Next, I obtained a smooth cloth with 40 dirs. 4th result! Also shown in

Table 4 Example 5 Tie with intrinsic viscosity α85, P content 0.01% by weight
IT, :% Intrinsic Viscosity [L5S Tie, 12 filaments were produced from the same spinneret as in Example 1 with a combination of PET containing 1091 weight and 196 weight, and a discharge ratio of 1:1.

After machining Enjin Baitei and spinning at a flow rate such that the fineness at that time was 40d, the paper was stretched by changing the stretching ratio. The first production was carried out in the same manner as in Example 1, and the results were used in the fifth
Shown in the table.

Table 5

[Brief explanation of the drawing]

Fig. 1 is a #R sectional view of the composite) 4 lament of the present invention, Figs. This is a cross-sectional photograph of a composite fictitious cross-section. Patent applicant Kanebo Co., Ltd. Kanebo Gosen Co., Ltd. Figure 1 Figure 3

Claims (1)

[Scope of Claims] 1. The polyester component on the high viscosity side has an intrinsic viscosity of at least &70, and -) the difference in WA thickness is 12 or more 2Ii
It is a composite filament made by combining the polyesters of the same name and PAINIDE K11. Situation 19 #Il where the circles whose cross-section is 2-) overlap by S
42) OpJf) Silk fabric-like polyvarnish P to knitted fabric layer composite 74-piece having the shape of 42) OpJf) where the 41 minutes connecting the intersections are the joints of 25E minutes. 1 At least one of the 2110 polyester varnish f# components is a-
Claims containing at-heavy titanium dioxide ■l
111 [Description O complex 4fment. & Two O circles O-Tei and a half 110jt are α6~1.25 and %IL-2a minute OJI is smaller - Tei diameter C0
Claims (1) lit or (2) O compound 14 which are LD-1,8. 4. The composite 4-piece according to claim 1, wherein the composite 74-piece has a fineness of 20-6040. (5) The composite filament according to claim 0, wherein the composite 74 lament is composed of a single yarn having a single yarn fineness of 2 to 64. This composite 74 component has an elongation of 10-25% and is described in any of the sections 1 to 5 of Category II.