JPS62243839A - Dark dyeable polyester bulky yarn - 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] [Industrial Application Field] The present invention relates to a novel polyester bulky yarn that has excellent deep dyeing properties and is extremely bulky. [Prior art and problems to be solved by the invention] Point] Polyester filament is a filament and has a high Young's modulus, so its clothing fabrics are mainly used for the spring and summer seasons, but for the fall and winter seasons, it is fabricated by false twisting and crimping to expand its use. It has been industrialized to give yarn bulkiness and a spun-like texture by crimping, creating loops by taslan processing using fluid, or fluffing by filament cutting methods such as rubbing. However, it is not as good as wool, especially in terms of texture.
It is not suitable for full-fledged autumn/winter season use.

At the same time, aiming to expand the use of polyester filaments, wool is mainly used in the field of formal clothing, where polyester has a high original refractive index, which causes a lot of surface reflection, and its dense structure, which makes it difficult to use disperse dyes. Due to the low amount of absorption, it is not possible to obtain desirable formal colors such as deep black, and it is also difficult to apply in terms of texture.

The present invention solves these problems and provides a polyester yarn that is bulky, has a wool-like texture, is HV, has excellent deep dyeing properties, and is suitable for autumn/winter applications and formal clothing applications.

[Means for solving problems]

The present invention uses kaolin or metakaolin with α1 to SOg
A polyester multifilament yarn consisting of two filament groups A and B containing polyethylene terephthalate as the main structural unit, having alternating interlaced parts and non-entangled parts in the longitudinal direction of the yarn, When the compaction value is 60■ or less, the filaments of filament group M and filament group B migrate and intertwine in the intertwined part, and the filaments of filament group A form slack, and in the non-entangled part, A deep dyeing polyester characterized in that filament group B is located at the core, filament group A is located around it and forms a slack, and the slack is larger than the slack of the filament group at the intertwined part. It is a bulky yarn.

In the present invention, kaolin or metakaolin is used as I11 to i
It is essential that the polyester multifilament is made of a polymer whose main structural unit is polyethylene terephthalate, which is heavily blended.

In this polyester multifilament, the original refractive forces of polyethylene terephthalate and kaolin or metakaolin are close to each other, so the danger that remains on the fiber surface is that the surface reflected light is reduced compared to when polyethylene terephthalate is used alone, and the internally transmitted light is reduced.

It has the property of internally reflecting light, and this property causes darkening. On the other hand, when drawing a drawn yarn of this polymer, compared to drawing an undrawn yarn of polyethylene terephthalate, the stretching ratio is lower, the occurrence of necking is less likely to occur, and the molecular orientation can be lowered. It is. This increases dye absorption and also reduces deep dyeing. The polyester filament yarn of the present invention has alternating interlaced and unentangled sections in the longitudinal direction, and has a compaction value of 60. Hereinafter, in the intertwined part, the filaments of filament group A and filament group B are intertwined, and the filaments of the filament group form slack, and in the non-entangled part, filament group B is located in the core part, and the filaments of filament group B are intertwined. The fibers form a slack in the periphery of the filament, and the yarn structure is characterized by the slack being larger than the filament details at the intertwined portion. A perspective view of the thread structure is shown in FIG.

In the present invention, the actual yarn structure, that is, the slack in the intertwined and unentangled parts, becomes a fabric and is dyed, which has a great effect on deepening the color in the next dyeing process.It also has a bulky, spun-like texture like wool. In order to obtain it, it also has a great effect.

In other words, when it is made into a fabric, the light is present all over the surface of the fabric, and the directionality of the light is not uniform but random, and the light that hits the fabric surface has a random direction. If the light that hits the filament is not specularly reflected uniformly, but the direction of reflection is random, it is diffusely reflected as a whole, and the amount of reflected light that reaches the eye is extremely small. On the other hand, the material that does not hit the slack filaments but enters the inside of the fabric from between the slack filaments
Most of the particles reflected by the internal filaments are reflected back into the fabric by the slack filaments on the surface and absorbed, so the amount of particles reflected to the outside is greatly reduced.

In this way, the polyester bulky yarn of the present invention has the multifilament itself that is deep dyeable, and at the same time,
Combined with the deep dyeing performance due to the structure of the thread, the deep dyeing property on fabric is extremely excellent.

In addition, the polyester bulky yarn of the present invention has slack filaments, and this gives it bulkiness.It also creates slack on the surface and inside of the fabric, giving it a soft and warm feel, similar to a cool texture. ing.

Further, in the present invention, it is necessary to alternately have interlaced parts and non-entangled parts with a compaction value of 60 or less. Without this entanglement, the loose filaments of filament group A and filament group B would not only shift during yarn unwinding in the textile process and pass through the yarn path, but also cause poor passing properties, as well as uniformity when forming into a fabric. The sagging filaments give an unsightly appearance to the surface of the fabric.

The compaction value is determined by piercing the unentangled part of the multifilament interlaced yarn with a fixed needle pin, pulling the tip, and applying a certain amount of tension to the needle pin (trip level tension).
It is expressed as the amount of movement (m) until a load is applied, and the smaller the value, the higher the degree of entanglement, and is measured by the following method.

Measuring machine: Kntanglement Te5ter
R2040 (manufactured by Rothschild) ll11 constant conditions; measurement speed 1 am 7 seconds, initial load α2t
/a (af denier trip level tension (DXα
2+73 t7 yarn However, D = Fineness of yarn (denier) F: Number of filaments of yarn The average amount of 10 measurements is taken.

The deep dyeable polyester bulky yarn of the present invention can be produced, for example, by the following method: Two undrawn polyester yarns whose main constituent unit is polyethylene terephthalate containing 1 to 1% by weight of kaolin or metakaolin (SO) are stretched. Magnification MDR (maximum stretching ratio) Xa6
0 to 180, stretching at a stretching temperature Tg (glass transition point) to 95°C, and then varying the heat treatment temperature to obtain ΔBWI3
(4 difference in boiling water yield between high heat absorption yarn and low heat shrinkage yarn) is 17 or more, and the yarns are combined and entangled with a compaction value of 60 or less using a fluid entangling device as shown in Japanese Patent Publication No. 56-12230. It can be obtained by applying relaxation heat treatment at a temperature of 90° C. to 230° C. at an overfeed rate of 2 to 55%, and then winding it up.

The polyester constituting the yarn of the present invention must contain at least α1 to 10% of kaolin or metakaolin.
If the weight ratio exceeds 0, yarn breakage during spinning and drawing increases, which is not preferable.

In addition, the polyester in the present invention refers to a polyester polymer composed of repeating units of polyethylene terephthalate, but 5-sodium sulfoisophthalate or (
and) a copolymerized polyester with a dicarboxylic acid component such as adipic acid.

If both filament group A and filament group B constituting the yarn of the present invention have irregular fiber cross sections, the sliminess characteristic of polyester will be reduced, and if the single fiber fineness of filament group B is smaller than that of filament group B, the fabric will It is preferable to give a soft texture and appropriate firmness, and also to make the fiber cross sections of both filament groups different. For example, if the filament group B has a triangular cross section and the filament group B has a round cross section, a fabric with less sliminess and firmness can be obtained.

Next, an example will be described.

〔Example〕

The relative viscosity of α5% by weight of metakaolin is 1.59.
Melt the polyethylene terephthalate of 2 at 278℃ to form 2
TaoQ extruded through a spinneret with 4 YWi holes
Wind it up at a speed of 96.5 m/min to obtain undrawn yarn fibers with a total denier of 96.5 denier. 90 These two undrawn yarns A and B are passed through the device shown in Fig. 2, and
A supply roller heated to 2°C and a stretching roller (2
) at a stretching ratio of MDRXα68, multifilament group A was heat set at 155°C with a hot plate (4), multifilament group B was separated with a guide (5), and then stretched with a roller (2) without heat setting. ) to combine the two multifilament groups, then roller (2) and take-up roller (
3) Interlace & ff1l(6) gives a compaction value of 15 and overfeed force 321
The yarn was heated by relaxing heat using a slit heater (7) at a temperature of 200° C., and then wound to obtain a densely dyed polyester bulky yarn of the present invention.

The appearance of the thread is as shown in Figure 1.

Create a woven fabric using the yarn, warp, and I@yarn, and
Black TlG-8M 12% owf (dye manufactured by Mitsubishi Kasei) Add dispersion leveling agent and pH adjuster, bath ratio 1:30
The cells were stained at 130°C for 60 minutes.

On the surface of the dyed fabric obtained, there were countless minute saggings in random directions, and as a result of evaluating the bulkiness, texture, and dyeability,
It has excellent bulkiness, has an extremely warm texture, is soft to the touch, has a worsted texture, and has a deep texture compared to conventional black polyester fabrics.
It was praised for its deep black color.

〔Effect of the invention〕

The deep dyeable polyester bulky yarn of the present invention has deep dyeability when made into a fabric product, is suitable for formal wear, has a bulky texture, and has an excellent soft and warm feel, which is difficult to achieve with polyester filament. Moreover, it is possible to exhibit 4 products in the autumn and winter of September, and its value is extremely high.

[Brief Description of the Drawings] Fig. 1 is a side view showing an example of a bulky yarn according to the present invention, Fig. 2 is a side view showing an example of a bulky yarn according to the present invention;
The figure is a side view showing an example of the apparatus for manufacturing the bulky yarn of the present invention.
←) is the unentangled part, (c) is walnut, A and B are multifilaments, (ri is the supply roller, (2) is the stretching roller, (
3) is a take-up roller, (4) is a hot plate, (5) is a guide, (
6) is an interlace device, and (7) is a slit heater.

Claims (4)

[Claims] (1) Kaolin or metakaolin from 0.1 to 5.0
A polyester multifilament yarn consisting of two filament groups A and B whose main constituent units are polyethylene terephthalate blended at % by weight, which has alternating intertwined parts and non-entangled parts in the longitudinal direction of the yarn, and has a compaction value of 6.
0 mm or less, and filament group A in the intertwined part
The filaments of filament group B are intertwined, and the filaments of filament group A form a slack, and in the unentangled part, filament group B is located at the core, and filament group A is located around it, forming a slack. and
A dark dyed polyester bulky yarn characterized in that the slack is larger than the slack of the filaments of filament group A in the intertwined portion. (2) The deep dyeable polyester bulky yarn according to claim 1, wherein the fiber cross sections of filament group A and filament group B are irregular cross sections. (3) The densely dyed polyester bulky yarn according to claim 1 or 2, wherein the single fiber fineness of filament group A is smaller than that of filament group B. (4) The deep dyeable polyester bulky yarn according to claim 1 or 3, wherein the filament group A and the filament group B have different fiber cross sections.