JPS63135536A - Processed yarn having spun yarn like apperance speck - 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] Technical fields> The present invention relates to a processed yarn having spun yarn-like appearance irregularities.

<Prior art> Conventionally, under the expressions such as spun-like texture or spun yarn-like texture, false twisted two-layer structure yarn (Special Publication No. 45-22018)
, raised yarn (Japanese Unexamined Patent Publication No. 127238/1982), etc., have been proposed, but most of them have attempted to approximate those of spun yarn in terms of texture and feel.

On the other hand, there is an increasing demand for materials that are similar in appearance to spun yarns, although they do not necessarily have to have a texture similar to that of spun yarns. For example, if taffeta made of ordinary woolly yarn or flat yarn has a spun yarn-like appearance, the commercial value of the tack itself will further increase.
No such product has been tried so far.

Object The object of the present invention is to provide a textured yarn that gives a fabric that closely resembles that of a spun yarn in appearance.

<Structure> As a result of intensive research to achieve the above object, the present inventors surprisingly found that in the conventional Taslan yarn, portions without loops were formed intermittently, and loop portions and non-loop portions were formed. It has been found that the desired textured yarn can be obtained by adding the following conditions.

Thus, according to the present invention, there is provided a processed yarn in which ground portions having substantially no loops and thick yarn portions having loops are arranged alternately and randomly along the longitudinal direction, comprising: a. the bulk of the ground portion; The altitude length is 5 cm to 70 cm, and the total length of the ground part is 30% to 70% in the spotted thread.
b. On the other hand, the ratio of the bulkiness of the thick thread portion having the loop to the ground portion is 1.3 to 1.6. Length 5cm~50
cm, and the total length is 30% to 70% in the plaque.
Provided is a process having a spun yarn-like appearance unevenness characterized by occupying .

FIG. 1 is a side view of the processed yarn according to the present invention, in which 1 is a thick yarn portion having a loop (hereinafter referred to as a loop portion), 2
is a non-loop part (ground part), and as a matter of course, both exist alternately along the longitudinal direction of the thread. The raw yarn constituting such processed yarn is usually made of polyester, polyamide,
It is composed of acetate, etc., but not only one type of yarn but also multiple types can be used.

As is clear from FIG. 1, the processed yarn according to the present invention is a yarn with uneven thickness, but the desired purpose cannot be achieved simply by alternately arranging loop portions and non-loop portions. .

That is, in order to obtain a spun yarn-like appearance flame effect in the above-mentioned processed yarn, it is necessary that the following conditions be satisfied in each of the ground portion and the loop portion.

a. Gland part (1) Length is 5 cm to 70 cm <It is particularly preferable that the length varies randomly within this range) 〇) Total length of the ground part is 30% to 70% b6 Loop part (i) The bulk height ratio is 1.3 to 3.6 (Ii)
The length is from scm to 50 cm (it is particularly preferable that the length varies randomly within this range).

The spun yarn-like uneven appearance is due to the natural thickness unevenness of the spun yarn in the length direction. Therefore, in order to obtain a spun yarn-like change in the appearance of the fabric due to the difference in electrical properties between the ground portion and the loop portion, the following is necessary.

(A) First, the bulk ratio must be between 1.3 and 3.6; if this ratio is less than 1.3, the desired plaque appearance effect cannot be obtained, and if it exceeds 3 or 6, the bulkiness The appearance effect is too strong and resembles the slub yarn effect, far from the spun light appearance.

(B) Regarding the length of the ground part from 5 to 70 cm and the length of the loop part from 5 to 50 cm, short ones outside of this range,
Alternatively, if it is long, the appearance effect when made into a woven fabric will be uniform throughout and will not have a spinning-like appearance.

(C) If the total length of the loop part is 70% to 30% (therefore, the total length of the ground part is 30% to 70%), any part is less than 30% or more than 70% and is biased to one side. In this case, spun yarn-like spots do not appear in the textile appearance. In particular, when the loop portion is 70%, it approximates a woven fabric with a uniform surface effect similar to that obtained using so-called Taslan processed yarn, while when the loop portion is less than 30%, it exhibits a slubbing effect similar to that when using slubbing yarn. It becomes a textile.

Incidentally, the above-mentioned bulkiness and the ratio of the total length are based on the following measurement method.

As the bulk height measuring device, the one shown in Figures 3 to 4 of Japanese Patent Publication No. 14131/1988 was used, and the measurement method described in the last line of column 7 to the bottom line of column 8 of the same publication was used. Measure according to.

First, sample the ground section and check its denier (d
From e), the ground parts are bundled so that the total denier (De) after alignment is approximately 48,000 deniers.

The slabs are similarly bundled to 48,000 denier by applying the aforementioned de of the ground section. Next, each bundle is inserted between the thin cloth tape 12 with a width of 2.5 cm and the sample stage 11, as shown in the front view of FIG. 3B and the cross-sectional view of FIG. 3C of the publication. The total load 14 including the metal fitting with a pointer is set to 50 g, and the value L (cm) indicated by the pointer is read. The measurement sample 18 is measured three times in total by moving the position, and the average value L (cm) is determined.

Next, the volume (V) in the tape of each bundle is determined by the following formula, and the bulk height ratio = ■1 (volume of slab part)/V2 (
volume of the ground section).

V (cc) - (L2/π)X2.5 Ratio of the total length For processed yarn with a total yarn length of 300 m (Fig. 3), each length of the ground part and loop part was measured and calculated by the following formula. calculate.

Total length of ground section (%) = [ΣGN (Gl +G2+...GN) x 10
0] /[ΣGN (Gl +G2+...GN)+Σ
5N (S+ +...SN)] Total length of loop portion (%) = [ΣSN <81+...3N) x 100] /
[ΣGN (Gl +G2...GN) tenΣSN (8
1+...SN) When measuring each length, it may be actually measured using a ruler, or the thick-to-thin ratio may be measured using a capacitance measuring device.

Next, a method for producing processed yarn according to the present invention will be described.

Fig. 2 shows the manufacturing process of Taslan yarn, in which the filament yarn 3 is supplied from a supply roller 4 to a Taslan nozzle 5, processed into Taslan yarn, and then taken up by a take-up roller 6 that rotates at a lower speed than the feed roller 4. It will be done.

As long as this operation is carried out, a Taslan yarn having loops almost uniformly along its longitudinal direction can be obtained.

However, in the present invention, the overfeed amount of the filament yarn 3 supplied to the taslan nozzle 5 is alternately set to conditions such that no loops substantially occur and conditions such that loops occur. In FIG. 2, this corresponds to the eccentric disk spinning, which is rotated so that the disk tip E1, which is the minimum length from the rotating shaft 8, is placed in the normal thread path.

During one revolution of the disc 5, the thread path changes as shown by the broken line and then returns to its original state. When the filament yarn is in a steady yarn path, loops are actively applied, but as the yarn path changes as shown by the broken line, the overfeed amount is reduced to such an extent that no loops are substantially generated. Here, as the eccentric cam, not only a perfect circular disc but also a modified version (for example, an elliptical shape) can be used.

<Action/Effect> In the present invention, the Taslan yarn is
) and b-(D~0), the reason why spun yarn-like appearance spots are produced is not yet clear, but at present it is probably assumed as follows.

That is, spun yarn is destined to have thickness unevenness due to the spinning process, but conversely, this thickness unevenness causes a characteristic appearance unevenness in the product. In the present invention, the dazzling loops in the processed yarn replace fluff, and the texture and appearance are very similar to spun yarn. Of course, the processed yarn of the present invention is clearly distinguished from spun yarn products in that it is made of raw silk, but the aim of the present invention is to create spun yarn-like appearance irregularities, and in this respect, it is necessary to provide appropriate thickness irregularities. This is achieved by

In this way, the present invention provides a processed yarn that gives a spun yarn-like appearance even for taffeta made of flat yarn, woolly, etc., greatly changing the image of conventional lining materials, and increasing its commercial value. It is something that enhances.

<Example> Using the process shown in FIG. 1, processed yarn of the present invention was obtained under the conditions shown in Table 1.

a. Raw yarn 1... Polyester filament yarn... 1
50de/48f i l b, surface speed of supply roller 4・212TrL/m1n
Surface speed of C0 take-up roller 6...2oom 7 m
1nd, set overfeed amount between supply roller 4 and take-up roller 6...6% e, Taslan nozzle 5...shown in Figure 1 of Japanese Patent Publication No. 47-42068 f, Taslan nozzle Supply pressure air pressure...6Kfl/c
m-G 9, eccentric disk (1) Material: stainless steel (11)
Diameter: 140m.

(To) Eccentric point...Position 1 cm from El on a straight line passing through the center (B) Number of revolutions...Processed yarn obtained under conditions of more than random fluctuation in the range of 200 to 600 r, p, m. (Processed yarn de: 15
The properties of 9) are shown in Table 2 below.

Table 2 Next, taffeta was manufactured by using the above-mentioned processed yarn at WJL for warp and weft (warp density: 30 threads/cm, weft density: 30 threads/cm'). The appearance of this fabric was extremely similar to that of a fabric made of cotton yarn with a fine count of 30, which corresponds to the processed yarn de.

<Comparative example> In Example 1, the number of rotations per rotation at the eccentric point of the diameter of the eccentric disk was set to the third
The processed yarn properties when changed as shown in the table are also shown.

Table 3 *; Non-loop part **; Loop part N091 is the above-mentioned requirement a - (D ~ ff+) of the present invention
, b - If it is less than the lower limit of (1) to (to), N00
In both cases, the appearance unevenness is completely different from the comparative cotton yarn fabric in the examples, and in the case of N001, it is rather similar to a slub yarn fabric, and in the case of N002, there is no surface effect and it is simply a low-quality fabric. It was similar to a Taslan yarn fabric produced by overfeed processing.

[Brief explanation of the drawing]

FIG. 1 is a side view of the processed yarn according to the present invention, FIG. 2 is a route diagram showing the manufacturing process of the processed yarn, and FIG. 3 is a ground section,
FIG. 3 is an explanatory diagram for determining the total length of a slab portion. 1...Loop part, 2...Non-loop part. 3... Raw yarn, 4... Supply roller. 5...Turbulent flow (taslan) nozzle. 6... Take-up roller, 7... Eccentric disk. El...End E2 of the disk at the shortest distance from the eccentric point
・End Gl-N of the disk at the longest distance from the eccentric point...
・Length of the ground part 81~N...Length of the loop part Figure 1 Figure 2 Figure 3 -1■H÷-1

Claims (2)

[Claims] (1) A processed yarn in which ground portions having substantially no loops and thick yarn portions having loops are arranged alternately and randomly along the longitudinal direction, and a. The length of the ground portion is 5 cm or more. 70 cm, the total length of the ground portion occupies 30% to 70% of the mottled thread, and b. On the other hand, the ratio of the bulkiness of the thick thread portion having the loop to the ground portion is 1.3 to 3.6. , length 5cm~50
cm, and the total length is 30% to 70% in the mottled thread.
A processed yarn having spun yarn-like appearance irregularities, which is characterized by accounting for %. (2) The processed yarn according to claim (1), wherein the constituent yarn is a flat yarn (raw silk) that is not crimped.