JP3059275B2 - Manufacturing method of core-sheath alternating inverted composite yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a core-sheath alternately inverted composite yarn by fluid processing.

[0002]

2. Description of the Related Art The overfeed amount of a core yarn is fixed,
A proposal has been made in which a sheath yarn is intermittently oversupplied and mixed and entangled by fluid processing to form a slab (Japanese Patent Laid-Open No. 61-198929).

[0003]

However, in the composite yarn obtained by the method disclosed in the above-mentioned publication, since the slab portion is constituted by a specific sheath yarn, a slab yarn having a different color and a greater variety can be obtained. I couldn't do that.

[0004] An object of the present invention is to provide an excellent design effect in which the core and sheath are alternately inverted so that the yarns to be supplied have different sensitivities, such as dyeability and crimpability, but exhibit a sufficient design effect. An object of the present invention is to provide a composite yarn.

[0005]

The method for producing the core-sheath alternately inverted composite yarn of the present invention is characterized in that the yarn (A) supplied at a constant overfeed amount is added to the overfeed of the yarn (A). The other yarn (B) is supplied while changing the overfeed amount before and after the overfeed amount, centering on the amount, and the fibers are mixed and entangled with the fluid.

Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 illustrates the principle of the manufacturing method of the present invention. The yarn (A) is supplied from the first feed roller 1 at a constant overfeed amount, and the yarn (B) is supplied by the second feed roller 2. The overfeed amount exceeding the overfeed amount of (A) and the overfeed amount of not more than the overfeed amount of the yarn (A) are simultaneously supplied while being changed. The yarns (A) and (B) thus supplied are mixed and entangled by the fluid nozzle 3. At this time, the yarn (B) becomes the yarn (A)
When the overfeed amount is exceeded, the yarn (B) constitutes the sheath, and the yarn (A) constitutes the core. Conversely, when the amount of overfeed of the yarn (B) is less than the amount of overfeed of the yarn (A), the yarn (A) constitutes the sheath, and the yarn (B) constitutes the core. . As described above, the two yarns (A) and (B) alternately form a core and a sheath to form a composite yarn. This core-sheath alternating composite yarn is the first delivery roller 4
Through the winder 5. If so-called stabilization for fixing the mixed fiber entanglement structure at this time is necessary, the fiber is wound by the winder 5 after passing through the heater 6 and the second delivery roller 7 via the first delivery roller 4. .

The length and thickness of the core and the sheath are achieved by adjusting the overfeed time of the feed roller 2 and the amount thereof, and more specifically, the feed roller 2 is driven by a servomotor.

As the fluid nozzle used in the present invention, a so-called Taslan nozzle or an interlace nozzle can be used, but a Taslan nozzle for preventing the occurrence of filamentation due to a large overfeed amount of both yarns (A) and (B). Preferably, a nozzle is used. Furthermore, the yarns (A) and (B) used in the present invention are multifilament yarns, spun yarns,
The same effect can be obtained with either the composite yarn or the aligned yarn.

For example, the principle of forming a conventional slab disclosed in Japanese Patent Laid-Open Publication No. Sho 61-19829 is based on the fact that one of two yarns (A ') is fixed to one as shown in FIG. The overfeed amount (the amount is referred to as a starting point X), and the overfeed amount of the other yarn (B ') is not reduced to at least less than the starting point X, and the overfeed amount (a) exceeding the starting point X is intermittent. It was something to supply.

On the other hand, in the present invention, as shown in FIGS. 2 and 3, one of the two yarns (A) has a constant overfeed amount (this is referred to as a starting point Y). And the other yarn (B) is over-feeded beyond the starting point Y (b) and over-feeded below the starting point Y (c).
Are supplied continuously or intermittently. Intermittent overfeed amounts (b) and (c) as shown in FIG.
The amount of overfeed (d) at the time of the change when supplying is greater than or equal to the starting point Y. At this time, the overfeed amount (Y) of the yarn (A) is a constant value of 10% or more and 30% or less, and the yarn (B)
A good result can be obtained by changing the overfeed amounts (b) and (c) in the range from 2% to 60%.

One of the typical composite yarns obtained in the present invention has an overfeed amount of the yarn (A) of FIG.
A certain value of 5% or more and 30% or less is set, and as shown in FIG. 2, the yarn is separated over a certain period of time when the difference (d) in overfeed amount between the yarn (A) and the yarn (B) is approximately ± 2%. The difference (b) or (c) in the overfeed amount between (B) and the yarn (A) is ±
Fluid treatment is performed while supplying for a predetermined time within 20%. In the case of a thermoplastic yarn, the tension heat treatment is continuously performed by a heat treatment heater, and in the case of a non-thermoplastic yarn, the shape of the slab is clear by simply tensioning, and the yarn (A) and the yarn (B) are mixed. A composite yarn with sufficient entanglement is obtained. Other typical composite yarns have a yarn (A) overfeed of 15
%, The overfeed amount of the yarn (B) is 2% or more, as shown in FIG. 3, and the difference between the overfeed amounts (b) and (c) of the yarns (A) and (B) is 2% or more. When continuously changed within the range of 40% or less, the sheath portions (slab portions) of both yarns (A) and (B) are continuously formed, and a composite yarn having a so-called spun yarn-like yarn form is obtained. Also in this case, by performing the stabilization, a composite yarn having a robust structure is obtained.

[0012]

EXAMPLE An LS6 type false twisting machine manufactured by Mitsubishi Heavy Industries was modified as shown in FIG. 1, and composite machining was performed under the processing conditions shown in Table 1. Trial No.
1 to No. The supply yarn of No. 6 has a fineness of 1 (A) in the text.
50 denier, 48 filaments, titanium oxide-containing, drawn polyester yarn, and the yarn (B) having a fineness of 150
Denier, the number of filaments was 48, black dyed, and drawn polypropylene. FIG. 3 shows signals input to the servomotor. Test No. in Table 1 In Sample No. 1, only a slab made of a drawn polyester yarn was conspicuous. Conversely, in the case of No. 5, only the slab of the polyester drawn yarn was conspicuous, and none of the core-sheath alternately inverted composite yarns was obtained. Trial No. 2-N
o. No. 4, slabs made of polyester drawn yarn and slabs made of original polypropylene black yarn were formed alternately, that is,
The core-sheath alternating reversal composite yarn had spun yarn-like apparent yarn spots. Trial No. 6 is a stabilization process condition, and the heater 6
At 160 ° C. and an overfeed amount between the first delivery roller 4 and the second delivery roller 7 of −20%. Trial No. In No. 7, the yarn A was a spun yarn of 50% polyester / 50% cotton, a single yarn having a 60-meter count, and the yarn B was the above-mentioned black original polypropylene drawn yarn. The stabilizing process was performed with the temperature of the heater 6 at 180 ° C. and the overfeed amount between the first delivery roller 4 and the second delivery roller 7 at −16%. In the obtained yarn, a spun yarn and a black dyed yarn alternately formed a slab, that is, a core-sheath alternately inverted composite yarn. The fluid processing nozzle used was a Heverline T321.

Here, the amount of overfeed will be described with reference to FIG. 1. It is expressed by (peripheral speed of roller 4-peripheral speed of roller 1) × 100% / peripheral speed of roller 4.

[0014]

[Table 1]

[0015]

According to the present invention, it is possible to obtain a composite yarn in which the core and the sheath are alternately inverted, and by combining yarns having different sensitivities such as dyeability and crimpability of the supplied yarn, extremely excellent design effects can be obtained. Excellent yarn is obtained, and the industrial effect is extremely large.

[Brief description of the drawings]

FIG. 1 is a schematic view of a combined machining for carrying out the present invention.

FIG. 2 is an explanatory view showing an example of a composite yarn forming principle according to a change in the amount of overfeed of yarns A and B in the present invention.

FIG. 3 is an explanatory diagram showing another example of a composite yarn forming principle according to a change in the amount of overfeed of yarns A and B in the present invention.

FIG. 4 is an explanatory view showing a conventional composite yarn forming principle.

[Explanation of symbols]

A, B Supply yarn 1 First feed roller 2 Second feed roller 3 Fluid nozzle 4 First delivery roller 5 Winder 6 Second delivery roller 7 Heat treatment heater X, Y Overfeed amount of yarn A ', A A), b, c, d Overfeed difference between yarn A ', A and yarn B', B

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁷ identification code FI D02J 1/08 D02J 1/08 (58) Investigated field (Int.Cl. ⁷ , DB name) D02G 3/34 D02G 3/04 D02G 3/36 D02J 1/00 D02J 1/08 F-term theme code 4L036

Claims (1)

(57) [Claims] 1. A yarn (A) supplied at a constant overfeed amount, with the overfeed amount being changed before and after the overfeed amount around the overfeed amount of the yarn (A). Supply another yarn (B),
A method for producing a core-sheath alternately inverted composite yarn, wherein the yarn is mixed and entangled with a fluid.