JPH06248533A - Production of special composite fiber - Google Patents

Abstract

PURPOSE:To provide a method for producing a special composite fiber capable of manifesting a specified design effect owing to existence of parts different in entanglement pitch when knitting a pile fabric therefrom and raising hairs by compounding plural filament yarns according to the fluid entanglement method. CONSTITUTION:This method for producing a special composite fiber is carried out by applying an entanglement treatment to plural filament yarns (A) and (B) using the first fluid entanglement unit 3 and then intermittently injecting a fluid in the second fluid entanglement unit 4 so as to partly entangle them firmly.

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 special composite yarn in which a plurality of yarns are combined by fluid entanglement treatment. More specifically, the present invention relates to a method for producing a special composite yarn that exhibits a special design effect due to the presence of portions having different entanglement pitches when the pile knitted fabric is napped.

[0002]

2. Description of the Related Art Japanese Patent Publication No. 63-15 discloses a method for producing crimped yarns which uses two or more fluid entanglements, and one of which produces a special design effect by intermittent treatment.
Japanese Patent Publication No. 382 discloses a method for producing a partially bulky yarn in which a multifilament is fluidly entangled and then false twisting is processed by an intermittent swirl flow nozzle. In addition, Japanese Patent Fair 1-5
Japanese Patent No. 4449 proposes a method of forming a slab by temporarily supplying crimped yarns and multifilament yarns at the same time and changing the amount of fluid supplied to a fluid nozzle. JP-A-6
In Japanese Patent Laid-Open No. 2-125035, a multifilament is subjected to an intermittent fluid entanglement treatment, then combined with another multifilament and continuously subjected to a fluid entanglement treatment to obtain a thick and thin effect, a bulky effect,
A method for producing a slab yarn characteristic of a color effect has been proposed. Further, Japanese Patent Laid-Open No. 281029/1992 discloses a method of obtaining a partially bulky yarn by performing a fluid entanglement treatment intermittently after forming a core-sheath structure with a turning false twist nozzle.

[0003]

However, Japanese Patent Publication No. 63-
No. 15382 is effective as a method for obtaining a partially bulky yarn, but it is an intermittent fluid false twisting method, has a low degree of entanglement, and exhibits a special effect when raised to a pile knitted fabric. Is scarce. In addition, the method according to Japanese Patent Publication No. 1-54449 is a method of changing the fluid flow rate at the time of fluid entanglement, and since the supply thread changes the fluid flow rate only in the aligned state, the thread forming the thread at a low flow rate is simple. Since the fibers are aligned in a disjointed state with each other and lacking in bunching property, it causes a defect of the textile and has a defect that the hue of the aligned part becomes unclear. JP-A-62-12503
In No. 5, since the multifilaments that have been intermittently entangled with each other and the other multifilaments are combined, the entanglement between the intermittently fluid-entangled portion and other multifilaments is insufficient.
When the pile knitted fabric is napped, it has a rough appearance. Further, in JP-A-4-281029, since the core-sheath structure is formed by the swirling fluid treatment, the appearance when the pile knitted fabric is napped is also rough. The present invention improves the above-mentioned method to form a portion having a large entanglement pitch and a portion having a small entanglement pitch alternately in the longitudinal direction of the yarn, thereby providing a variety of appearances of the yarn,
Moreover, the object is to obtain a composite yarn having good processability by a simple method.

[0004]

That is, according to the present invention, a plurality of yarns are entangled by a first fluid entanglement tool, and then, in a second fluid entanglement tool, fluid is intermittently ejected to partially It is a method for producing a special composite yarn, which is characterized in that it is strongly entangled.

The present invention will be described in detail below with reference to the drawings. FIG. 1 shows an example of a method for processing the special composite yarn of the present invention, and FIG. 2 shows a side view of the composite yarn obtained by the production method of the present invention. In Figure 1,
A and B are supply yarns, 1 and 2 are feed rollers, 3 and 4 are fluid entanglement tools, 5 is a solenoid valve, 6 is a delivery roller, and 7
Indicate winders, respectively. Here, one or both of the supply yarns A and B may be crimped yarns, filament yarns, or yarn-dyed yarns, but in order to clearly express the design effect due to the difference in physical properties. It is preferable to use unprocessed yarn for one yarn and processed yarn for the other yarn.

The supply yarns A and B are supplied from separate feed rollers 1 and 2, and are subsequently inserted into a first fluid entanglement tool, where both yarns are subjected to a light fluid entanglement treatment, complex entanglement, and continuous. Then, the fluid is sent to the second fluid entanglement tool for fluid treatment. At this time, the supply threads (A) and (B) are partially and strongly entangled by performing intermittent fluid treatment by the action of the solenoid valve (5). That is, the appearance of the yarn can be changed by alternately forming a portion having a large entanglement pitch and a portion having a small entanglement pitch in the longitudinal direction of the yarn.

When the fluid injection processing is performed by the first and second fluid entanglement tools, the supply amount varies depending on the shape of the supply yarn, for example, when the A supply yarn is an unprocessed yarn and the B supply yarn is a false twisted yarn. If the supply amount of the supply yarn B is too small, the focusing property becomes poor. Therefore, the overfeed rate is preferably 10% or more,
More preferably, it is about 13%.

At this time, if the supply amount of the supply yarn A is too large, when the function of the solenoid valve is off, the first fluid entanglement tool does not absorb the yarn sufficiently and the yarn sags, and the feed roller (1) Since it causes winding breakage, it is preferable that the supply amount is smaller than the supply yarn B, and specifically, the overfeed rate is 5% or less, and more preferably 3 to 5%.

The overfeed rate of the supply yarn A will be expressed as follows if explained with reference to FIG.

[0010]

[Equation 1]

The overfeed rate of the supply yarn B is expressed as follows.

[0012]

[Equation 2]

In the present invention, the first fluid entanglement device continuously ejects and then the second fluid entanglement device partially entangles the supply yarns A and B by the action of the solenoid valve. Here, the solenoid valve is turned off. At the time only the continuous injection process by the first fluid entanglement tool,
As shown in Fig. 2 (l), the pitch of entanglement becomes a coarse yarn form. On the contrary, when the solenoid valve is on, the fluid is jetted by the second fluid entanglement tool, and a strong entangled yarn with a very small pitch is obtained as shown in FIG. 2 (2). It should be noted that the on / off frequency of the solenoid valve (5) can be freely changed by changing the pitch of the length by connecting the solenoid valve to the random signal.

Further, it is preferable that the fluid pressure of the second fluid entanglement tool is higher than the fluid pressure of the first fluid entanglement tool, and the difference in the fluid pressure of the first and second fluid entanglement tools is made. When attached, a morphological difference occurs in the confounding property of (1) and (2) in FIG. 2, and when a fabric is formed, the hue yarn form of both is clarified. Specifically, by processing the pressure difference between the first and second fluid entanglement tools with a difference of 3.0 kgf / cm ² or more, a very clear entanglement difference occurs, and yarns with different hues are formed. When supplied, both yarns are aligned in a weakly entangled portion, and both yarns have an apparently uniform hue in a strong mixed and entangled portion. By repeating such a form alternately, a yarn that is rich in variation in the longitudinal direction of the yarn can be obtained.

[0015]

EXAMPLES The present invention will be specifically described below with reference to examples. Examples 1 to 5 The present invention was carried out under the processing conditions shown in Table 1. Here, the supplied yarn A of Examples 1 to 5 used a polyester drawn yarn having a fineness of 100 denier and a filament number of 48, and the supply yarn B used a polyester crimped yarn having a fineness of 75 denier and a filament number of 24. In each case, a part having a large entanglement pitch and a part having a small entanglement pitch were alternately present in the longitudinal direction of the yarn, and thus the composite yarn was rich in appearance and good in process passability. At an overfeed ratio of 3 or less than 10%, the entanglement pitch difference and the focusing property were slightly insufficient. When the content was 10% or more as in Example 1, a yarn having a good converging property and a clear entanglement difference was obtained. Trial No. In Nos. 4 to 5, when the overfeed rate of the supplied yarn B was changed, when it was set to 7% or more, slackening of the yarn occurred when the solenoid valve was turned off, and there were cases where processing was unstable.

[0016]

[Table 1]

[Embodiment 6] 100d / 48f for the supplied yarn A
A composite yarn was produced under the same processing conditions as in Example 1, using a polyester black drawn yarn of 75d / 35f as the polyester drawn yarn of No. 1 and a supplied yarn B of a polyester black dyed drawn yarn. Using this composite yarn, 20
When the pile knitted fabric was knitted with a gauge pole knitting machine (manufactured by Nihon Meyer) and napped, a black and white mixed portion and a clear black and white portion existed in a streak pattern, and the design was extremely rich. Furthermore, the texture of the napped surface was extremely flexible.

[0018]

As described above, according to the present invention, by alternately forming a portion having a large entanglement pitch and a portion having a small entanglement pitch in the longitudinal direction of the yarn, the appearance of the yarn is varied and the process It is possible to obtain a composite yarn having a good passing property by a simple method. When the composite yarn is made into a pile knitted fabric and napped, portions having different degrees of yarn dispersal are mixed and the design effect is enhanced.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a manufacturing method for carrying out the present invention.

FIG. 2 is a side view of a composite yarn obtained by the present invention.

[Explanation of symbols]

 A, B: Supply yarn 1: Feed roller 2: Feed roller 3: First fluid entanglement tool 4: Second fluid entanglement tool 5: Solenoid valve 6: Delivery roller 7: Winder I: Electromagnetic of second fluid entanglement tool Entangled part when valve is closed II: Entangled part when solenoid valve of second fluid entanglement tool is open

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[Procedure amendment]

[Submission date] April 12, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 3

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

When the fluid injection processing is performed by the first and second fluid entanglement tools, the supply amount varies depending on the shape of the supply yarn, for example, when the A supply yarn is an unprocessed yarn and the B supply yarn is a false twisted yarn. If the supply amount of the supply yarn B is too small, the bundling property becomes poor.
It Therefore, the supply amount of the false-twisted yarn B is favorable.
More preferably, an overfeed rate of 10% or more,
More preferably, an overfeed rate of about 13% is good.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

At this time, if the supply amount of the supply yarn A is too large, when the function of the solenoid valve is off, the first fluid entanglement tool does not absorb the yarn sufficiently and the yarn sags, and the feed roller (1) A supply amount smaller than that of the supply yarn B is preferable because it causes winding breakage, specifically , a supply yarn that is an unprocessed yarn.
The amount of A supplied is 5% or less overfeed rate,
Preferably, an overfeed rate of 3 to 5% is good.

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

[0015]

EXAMPLES The present invention will be specifically described below with reference to examples. Examples 1 to 5 The present invention was carried out under the processing conditions shown in Table 1. Here, the supplied yarn A of Examples 1 to 5 used a polyester drawn yarn having a fineness of 100 denier and a filament number of 48, and the supply yarn B used a polyester crimped yarn having a fineness of 75 denier and a filament number of 24. In each of the yarns, a part having a large entanglement pitch and a part having a small entanglement pitch were alternately present in the longitudinal direction of the yarn, and the appearance was varied, and the composite yarn had good process passability. Supply yarn B as
When the overfeed rate was less than 10%, the entanglement pitch difference and the focusing property were slightly insufficient. As in Example 1
Yarns with good clear confounding differences also converging and you 13% was obtained. In Examples 4 to 5, when the overfeed rate of the supplied yarn A was changed, when the amount was 7% or more, the yarn sagging occurred when the solenoid valve was turned off, and the processing was unstable in some cases.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

[0016]

[Table 1] The pressure of the first fluid intermingling device: 1.5 kgf / cm ² second fluid entangling device pressure: 5.0 kgf / cm ² during opening and closing times closing of the solenoid valve: 0.1 to 0.2 seconds during opening: 0.4 ~ 0.6 seconds

Claims (4)

[Claims] 1. A special feature characterized in that a plurality of yarns are entangled by a first fluid entanglement tool, and then in a second fluid entanglement tool, a fluid is intermittently jetted to entangle partially strongly. Method of manufacturing composite yarn. 2. The method for producing a special composite yarn according to claim 1, wherein an unprocessed yarn is used as one of the plurality of yarns, and a false twist yarn is used as another yarn of the plurality of yarns. 3. The overfeed rate of unprocessed yarn is 10%.
3. The method for producing a special composite yarn according to claim 2, wherein the false feed yarn has an overfeed rate of 5% or less and is entangled by the first fluid entanglement tool. 4. The method for producing a special composite yarn according to claim 1, wherein the pressure of the fluid of the first fluid entanglement tool is set lower than the pressure of the fluid of the second fluid entanglement tool.