JPS63534B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a silk spun yarn and a method for producing the same, and an object thereof is to provide a silk spun yarn that exhibits a marbling-like shaving effect by a simple means. A number of methods have been proposed, including Japanese Patent Publication No. 15050/1983, for producing fabrics with a silky feel by processing filament yarns and false twisted yarns through fluid treatment. However, these proposals mainly place emphasis on the texture, and end up choosing the composition or crimpability of the false-twisted yarn to leave some bulge and obtain a smooth texture. The inventors of the present invention have conducted various studies in an attempt to obtain a processed yarn that has both a silky feel and a color effect from a different perspective than the above idea, and found that the difference in thermal history is due to the mixed fiber effect of filament yarn and false twisted yarn. In order to maximize the effect of this difference in dyeing, it is necessary to have an appropriate composition ratio between the filament component and the false-twisted yarn component. It was discovered that there is an appropriate level of entanglement for fibers, and the present invention was achieved. According to the present invention, (1) in a mixed fiber composite yarn of uncrimped filament yarn (flat yarn) and reheat-treated false twisted yarn, there is virtually no difference in yarn length between the two; Moreover, there are no interlacing structures such as loops or slacks on the yarn surface, the degree of interlacing is 20 to 80 per meter, and the mixed fiber ratio of false twisted yarn is 20% to 50%. Silk spun processed yarn exhibiting a Kasuri effect characterized by a range of characteristics. (2) The composition ratio of the uncrimped filament yarn (flat yarn) and the reheat-treated false twisted yarn is set to 20% to 50% without giving a substantial difference in yarn length. By setting and supplying the compressed fluid to the processing area at an excess supply rate of 3% or less, the degree of interlacing is in the range of 20 to 80 particles per meter without substantially creating intertwined structures such as loops and slack. A method for producing silk-spun textured yarn exhibiting a Kasuri effect, which is characterized by blending the fibers so that the fibers become mixed. is provided. In the present invention, "an aptitude level of entanglement"
It has been found that the above-mentioned dyeing difference effect remains as a scratch-like effect after being made into a woven or knitted fabric, and has the property of maximizing the commercial value of the fabric. In other words, it can be said that in order to obtain the desired scraping effect, there is an appropriate composition ratio of filament yarn and false twisted yarn, and there is also a level of entanglement. Furthermore, the degree of entanglement of the mixed fiber yarns associated with this smudge effect is closely related to the weavability especially when fabricated, and this point was an important point in the selection that led to the present invention. In other words, from the viewpoint of the sludge effect, a low level is preferable as the appropriate level of entanglement of the mixed fiber yarn, but conversely, from the perspective of weavability, a high level is preferable, and generally speaking, a low or high level of entanglement is better. I can not say. On the other hand, the purpose of adopting so-called reheat-treated false-twisted yarn (hereinafter referred to as heat stabilized type or heat stabilized false-twisted yarn), which has reduced torque, as a false-twisted yarn is to improve the texture. While taking advantage of silky effects such as a smooth feeling and luster as well as fullness, in connection with the above-mentioned shaving effect, it is possible to maintain an appropriate level of tangles, and in particular, eliminate bending and overhanging parts such as loops or sagging that inhibit the silky texture. This is because it is convenient even though it does not cause any problems. In other words, with single type false twisted yarn, crimping occurs strongly during the process or when finishing product dyeing, and bending and overhanging parts such as sag are inevitably formed, giving a fluffy texture and a uniform gloss or surface feel. There are drawbacks to losing it. Secondly, the heat stabilized type exhibits a darker dyeing behavior than the single heater type, so it is easier to see the difference in dyeing between it and the other material, filament yarn that has not been crimped (so-called flat yarn). This is because it is suitable for obtaining the scraping effect aimed at by the present invention. The present invention will be explained with reference to the accompanying drawings. Figure 1 shows the basic process for carrying out the present invention. 1 is a supply pirn for filament yarn, 2 is a supply package for heat-stabilized false twisted yarn, and 3 is a supply package for both at the same time. 4 is a compressed air treatment nozzle, and the entwined structure between the two component yarns is provided at the nozzle.
5 is a delivery roller, and in order to obtain an appropriate degree of entanglement, an appropriate excess supply rate is set by the roller system of 3 and 5. 6 is a winding device.
Here, the composition ratio of the filament yarn (1) and the heat-stabilized false twisted yarn (2) is determined firstly in order to obtain a suitable scraping effect, and secondly, in order to obtain a suitable silky feel, the composition ratio of the filament yarn (1) and the heat-stabilized false-twisted yarn (2) is determined. It is necessary to keep it between 20 and 50%. FIG. 2 shows the relationship between the excess supply rate and the degree of entanglement, and it is necessary to select an appropriate range of entanglement in order to obtain the scraping effect expected by the present invention. That is, in FIG. 2, the area in parentheses is the area where the effects of the present invention can be provided, that is, the area where an appropriate scraping effect and good weavability can be provided. On the other hand, the range () is rather good in terms of the scraping effect, but has problems in weavability and is beyond the range of practical use. Furthermore, in the region (), the excessive supply rate of processed yarn is too high, and even though the degree of entanglement may seem low at first glance, the mix between the single yarns of the constituent yarns is so fine that it is impossible to obtain a scraping effect. On the other hand, in the range (), the degree of entanglement is basically too high, and although there is no problem with weavability, it is impossible to provide anything of commercial value in terms of scraping effect. Second
What is characteristic in the figure is that the scraping effect cannot be unambiguously estimated solely from the degree of entanglement; the degree of entanglement of single fibers between yarns or the number of constituent yarns depends on the excessive supply rate during processing. The scraping effect obtained differs depending on the degree of entanglement. If the excess supply rate is high, the degree of entanglement between the single fibers of the constituent yarns only increases, and even if the apparent degree of entanglement is low, it is not possible to obtain a scraping effect. Fig. 3 shows a side view of the yarn obtained by the present invention, where the yarn is basically given interlacing properties at the point a, and the integrity of the yarn as a whole is obtained. It also guarantees weavability. On the other hand b
The part is a kind of flowering part, and of course there is a certain degree of mixture, but basically the filament yarn and the heat stabilized false twisted yarn are arranged in parallel, giving the scraping effect referred to in the present invention. Figures 4A and 4B are model illustrations of the mixed state of yarns in parts a and b of Figure 3, respectively. In part a, filament yarn and false twisted yarn are uniformly mixed. On the other hand, the one in section b shows that, to put it in an extreme, they are arranged in a side-by-side manner. As described above, according to the present invention, it is possible to obtain a silk spun processed yarn exhibiting a scraping effect without requiring particularly frequent steps or special materials. <Example 1> In the basic process shown in FIG. 1, the processing of the present invention was carried out using polyester 100de/72fil triangular cross-section yarn as the filament yarn and polyester 50de/36fil triangular cross-section yarn as the heat stabilized false twisted yarn. carried out. The yarn speed was 300 m/min and the testing was carried out at the level shown in Table 1. (The nozzle used was the one described in Japanese Patent Publication No. 47-42068.)

[Table] <Example 2> Polyester 50de/as filament yarn
The processing of the present invention was carried out using a polyester 50de/36fil triangular cross-section yarn as a heat stabilized false twisted 36fil triangular cross-section yarn. Yarn speed is
The test was carried out at a speed of 300 m/min as shown in Table 2.

【table】

【table】 [Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the basic process of the present invention,
FIG. 2 is a graph showing the area satisfying the scraping effect and weavability, which are the key points of the present invention, in relation to the excess supply rate and the degree of entanglement; FIG. 3 is a side view of the yarn obtained by the present invention; FIGS. 4A and 4B are cross-sectional views showing the interwoven state of the yarns in the intertwined part and flowering part in FIG. 3. 1...Filament yarn supply pirn used, 2...
Heat stabilized false twist yarn supply package, 3
... Supply roller system, 4 ... Compressed air treatment nozzle, 5
... Delivery roller, 6 ... Winding device, a
...Confounding part, b...Blooming part.

Claims (1)

[Claims] 1. In a mixed fiber composite yarn of uncrimped filament yarn (flat yarn) and reheat-treated false twisted yarn, there is substantially no difference in yarn length between the two, In addition, there are no interlacing structures such as loops or slacks on the yarn surface, and the degree of interlacing is 20 to 80 per meter, and the mixed fiber ratio of false twisted yarn is in the range of 20% to 50%. Silk spun processed yarn exhibiting a Kasuri effect characterized by the following. 2. Set the composition ratio of the uncrimped filament yarn (flat yarn) and the reheat-treated false twisted yarn to 20% to 50% without giving a substantial difference in yarn length. to the compressed fluid processing zone at an excess supply rate of 3% or less, substantially looping,
Manufacture of silk spun processed yarn exhibiting a shaving effect characterized by blending the fibers so that the degree of interlacing is in the range of 20 to 80 pieces per meter without producing entangled structural parts such as sagging. Method.