JP2638598B2 - Spun tone special yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention comprises two or more multifilament yarns,
It has an intermittently thick portion in which the sheath yarn is wound multiple times around the core yarn in the longitudinal direction of the yarn, and has a large number of loops formed on the entire yarn, providing an excellent fantasy effect. In addition, it relates to soft and warm spun tone special yarn.

(Prior art) Conventionally, Juan Sea yarn in which a single wound portion (non-slab portion) and a multiple wound portion (slab portion) are alternately formed by using two or more kinds of multifilament yarns is disclosed in −2825
No. 8, JP-B-50-35147, JP-A-60-126338 and the like. However, these yarns do not have feathers on the yarn surface and the whole yarn is bundled by many winding twists, so when it is made into a woven or knitted fabric, it has a strong sense of coarseness and lacks swelling and warmth , Since the non-slab part is simply a single wound twist, the binding property between the core yarn and the sheath yarn is poor, and the sheath yarn is easily displaced by twisting or slight weaving during weaving and weaving. Practical problems such as lowering are likely to occur, and the false twist crimping process gives a fluffy feeling peculiar to false twisted yarns, resulting in lack of tightness and waist, and a favorable texture for clothing. There were no shortcomings.

Japanese Patent Application Laid-Open No. 58-8146 proposes a method of providing a core yarn and a sheath yarn to a fluid jet nozzle capable of imparting a turning action and a propulsion action to a yarn. In order to pull out the yarn in the core yarn traveling direction, the yarn becomes a knotted yarn consisting of a thick portion in which a sheath yarn is wound around the core yarn and details in which the core yarn and the sheath yarn are twisted in a strong twist. Because there is no
Similar to the above-mentioned Huanshi yarn, there is a drawback in that it exhibits a strong twisting tone, has a strong sense of coarseness, and lacks swelling and warmth. In addition, in this method, since the sheath yarn is merged with the core yarn in the fluid ejection nozzle, the movement of the joining point is regulated. The sheath yarn is squeezed on the inner wall of the fluid ejection nozzle, and single yarn breakage easily occurs. There is a disadvantage that.

Further, in order to enhance the spun-like effect, a fancy sea yarn having a large number of loops formed on the entire yarn and a method for producing the same have been proposed in Japanese Utility Model Publication No. 53-49882 and Japanese Patent Application Laid-Open No. 56-112528. For the processed yarns obtained by these methods, the core yarn and the sheath yarn are supplied to the same fluid ejection nozzle, the sheath yarn is temporarily oversupplied, and the sheath yarn is multiply accumulated on the outer periphery of the core yarn and entangled. A slab having a loop is formed intermittently.

(Problems to be Solved by the Invention) In the above method, since the sheath yarn is temporarily over-supplied at the time of forming the slab portion, the entanglement of the slab portion is reduced and the slab portion is formed by accumulating a large number of large loops. Will be done. Therefore, although it looks thick at the yarn stage, there are too many gaps between the constituent filaments. When this yarn is made into a woven fabric, the gaps disappear or are reduced due to suppression of the adjacent warp or weft yarns, and the slab portion has There was a drawback that the form fastness was poor and the surface effect on the fabric could not be effectively exhibited.

The present invention solves the above-mentioned drawbacks of the conventional FANCY yarn, and has a good shape robustness of a thick portion (slab portion). Even in a fabric state, the shape of the thick portion is clear, and the fabric can be changed. An object of the present invention is to provide a special span-tone yarn capable of giving a rich appearance and a soft and warm feeling of the span tone.

(Means for Solving the Problems) The present inventors have developed a fancy sea yarn that can impart a variety of appearances and a soft and warm feel of span tone to a fabric as described above using multifilament yarn. As a result of intensive studies, the thick section was formed into a multiple winding structure using a fluid jet nozzle that applies propulsion and swirling force to the yarn, and a loop was formed on the outer layer. The inventors have found that the above object can be achieved by forming confounds and loops, and have arrived at the present invention.

That is, the present invention supplies a multifilament yarn to one fluid injection nozzle which imparts a turning force and a propulsion force to a yarn by having a fluid introduction hole which is eccentric with respect to the yarn passage hole and has an angle. At the yarn inlet side of the fluid ejection nozzle, another multifilament yarn that is overfed by 5% or more than the multifilament yarn is combined with the multifilament yarn to move the combining point, and the yarn of the fluid injection nozzle is moved. At the outlet side, the core-sheath structured yarn having a thick wound portion obtained by drawing the yarn in a direction different from the fluid jetting direction and applying a jet to the yarn side surface, wherein at least one multi-layer yarn serving as a sheath yarn Two or more thick wound portions in which a filament is wound in a plurality of layers on another multifilament yarn serving as a core yarn, and a loop is formed in the filament of the outer layer of the wound portion.
In the details between the wound thick portions, the gist is a special spun tone yarn in which a core yarn and a sheath yarn are entangled with each other and a loop is formed.

 Hereinafter, the present invention will be described in detail.

As shown in FIG. 1, the spun tone special yarn of the present invention
The wound thick portion A and the detail B are alternately arranged in the longitudinal direction. In the thick wound portion A, the sheath yarn 2 is wound around the core yarn 1 in a plurality of layers, and the loop 3 is formed in the filament of the outermost layer. Have been. Therefore, since the inner layer portion of the thick wound portion A has a dense wound structure with a small degree of void between filaments, the shape robustness of the thick wound portion A against tension and suppression during the fabric manufacturing process and after manufacturing is enhanced, A variety of appearances can be imparted to the fabric. Further, since the loop 3 is formed in the filament of the outermost layer, the degree of void between the filaments is increased, and a span-like feeling can be given. In order to give the fabric a variety of appearances as described above, the wound thick portion A must be
It is necessary to have at least 2 pieces / m
When the value is less than, the surface change becomes extremely small, which causes defects such as a monotonous appearance of the fabric and occurrence of periodicity.

On the other hand, in detail B, the constituent filament of the core yarn 1 and the constituent filament of the sheath yarn 2 are entangled with each other, and the loop 3
Are formed in large numbers. The fluffy loop 3 significantly improves the soft and warm spanning feeling, and the entanglement further improves the form robustness of the thick portion A.

Further, the spun tone special yarn of the present invention is made of raw yarn without being subjected to crimping processing, and therefore has no fluffiness or body feeling peculiar to crimped yarn, and is excellent in tension and waist.

In the present invention, the multifilament yarn serving as the core yarn and the sheath yarn has no crimp, so-called raw yarn (raw yarn).
The materials include homopolymers such as polyester and polyamide, thermoplastic synthetic fibers obtained from copolymers and blended polymers containing these polymers as main components, and regenerated cellulose fibers such as rayon and cupra. it can.

Next, the method for producing the spun-tone special yarn of the present invention will be described.

FIG. 2 is a schematic view showing a process for producing a special yarn having a spun tone according to the present invention, in which a multifilament yarn (hereinafter referred to as a core yarn) 1 serving as a core yarn is supplied from a supply roller 4 at a constant overfeed rate. Is supplied to the fluid injection nozzle 10 by
At this time, the fluid is swirled by the swirling flow of the fluid injection nozzle 10,
Twisting is performed between the fluid ejection nozzle 10 and the supply roller 4.

On the other hand, another multifilament yarn (hereinafter referred to as a sheath yarn) 2 is supplied from a supply roller 5 at an overfeed rate higher than the core yarn 1 by 5% or more, and passes through a guide 9 at the inlet of the fluid ejection nozzle 10. It is combined with. By the swirling action of the core yarn 1 swirled by the swirling flow, the sheath yarn 2
Is wound around the core yarn 1, but the tension of the sheath yarn 2 increases as the yarn is wound, and the combining point 8 moves to the supply roller 4 side.
Next, when the tension of the sheath yarn 2 increases to a certain limit, the yarn joining point 8 moves in the opposite direction, that is, toward the fluid ejection nozzle 10 (8a) in order to return to a stable twisting state, so that the tension decreases.
Further, when the winding action continues, the tension of the sheath yarn 2 increases again, and the yarn joining point moves in the opposite direction. Due to the reciprocating motion of the yarn 8 as described above, the thick portion in which the sheath yarn supplied to the core yarn 1 at an overfeed rate of 5% or more is wound into a plurality of layers is formed in the longitudinal direction of the yarn. 2 / m or more intermittently. The moving distance of the above-mentioned yarn point depends on the turning force of the fluid injection nozzle, the position of the guide, etc., but is usually 3 to 10 cm.
It is preferable to set so that Also, the yarn thread point 8
Moves due to tension fluctuations caused by the winding of the core yarn 2, but the guide 9
Can be reciprocated, or air can be blown to the combining point 8 to positively move the combining point 8.

Next, the yarn is jetted from the side at the yarn outlet side of the fluid injection nozzle 10 to form a yarn in which the core yarn 1 and the sheath yarn 2 are entangled, and a loop and a slack are formed. It is taken up by the take package 7. in this case,
The yarn guided into the fluid ejection nozzle 10 is disturbed by the fluid jet, and the core yarn 1 and the sheath yarn 2 are untwisted and / or opened. However, the wound thick portion formed by winding the sheath yarn 2 around the core yarn 1 in a plurality of layers may be untwisted due to the complicated winding of the outer layer or a part of the layer even if such an action is taken. Although the fiber is opened, the inner layer remains in a wound state.

In addition, the yarn is ejected by the fluid jet nozzle
It is extruded to the outlet side of 10 and drawn out at the outlet of the fluid ejection nozzle 10 in a direction different from the fluid ejection direction. At this time, the untwisted and / or opened yarn is entangled and forms a loop. Accordingly, the yarn having the loop 3 formed in both the thick portion A and the detailed portion B of the yarn exiting the fluid ejection nozzle 10 is formed.

The size and frequency of the thick portion A of the wound yarn can be changed as desired. For example, the turning force of the fluid jet nozzle 10, the overfeed rate of the yarn, or the guide 9 and the core The distance between the yarns 1 and the like can be appropriately changed and adjusted.

As the fluid injection nozzle for applying the propulsion force and the turning force used in the present invention, for example, as shown in FIGS. 3 and 4, the yarn passage hole 11 from the entrance to the exit of the yarn and the opening to this yarn passage hole 11 are provided. It has a fluid introduction hole 12, and a fluid ejected from the fluid introduction hole 12 is applied to the inner surface of the yarn passage hole 11 facing the fluid introduction hole 12 to apply a propulsive force to the yarn passing through the yarn passage hole 11. A fluid injection nozzle capable of simultaneously generating a parallel flow for forming a loop by increasing the injection power to the side surface of the yarn and a vortex for rotating the yarn at the yarn outlet of the fluid injection nozzle. Is used. In this case, in order to increase the turning force, as shown in FIG.
It is necessary to provide 12. On the other hand, in order to increase the propulsive force, the angle α formed between the yarn passage hole 11 and the fluid introduction hole 12 may be reduced, or the diameter of the yarn outlet of the yarn passage hole 11 may be larger than the diameter of the yarn inlet.

In the above method, it is desirable to increase the propulsion force without lowering the turning force. Therefore, taking into account this point, the fluid injection nozzle is required to take the shape of the threading hole, the angle of the fluid introduction hole with respect to the threading hole, and the like. Is selected as appropriate.

Next, in order to form a loop or slack in the yarn, the yarn is pulled out at a yarn outlet of the fluid injection nozzle in a direction different from the injection direction of the fluid, and the fluid is applied to the side surface of the yarn.
When the ejection force of the fluid, that is, the propulsion force is weak, it is difficult to form a loop, so an appropriate propulsion force is required. The fluid pressure of the fluid jet nozzle is preferably about 4 to 9 kg / cm ² .

Furthermore, in the present invention, since the core yarn is combined with the sheath yarn to form a loop, the core yarn is overfed, and the overfeed ratio is preferably 2 to 8%. Also,
Since the sheath yarn is wound in layers on the core yarn, the overfeed needs to be 5% or more, preferably 10 to 40% higher than the sheath yarn. 5% difference in overfeed rate between sheath yarn and core yarn
When the value is less than, the twisting force of the core yarn is hindered by the yarn tension, the transmission of the twist becomes insufficient, and the variation of the yarn joining point is reduced, so that it is difficult to form a thick wound portion.

(Examples) Hereinafter, the present invention will be described specifically with reference to examples.

Example 1 Polyester multifilament yarn 75d / 24 as a core yarn
f, Polyester multifilament yarn 75d / 48 as sheath yarn
f, and the nozzles shown in FIGS. 3 and 4 were used as the fluid jet nozzles, and spun tone special yarns were manufactured according to the manufacturing process shown in FIG. 2 under the processing conditions shown in Table 1.

The spun-tone special yarn obtained had a loop over the entire yarn, and the winding thick part and the details were alternately formed, and the number of the winding thick part was 8 / m. In the details, the core yarn and the sheath yarn are entangled with each other, and the wound thick portion has the core yarn wound with the sheath yarn in a layered form, so that the yarn has excellent form robustness against tension and suppression. Was. In addition, only the yarn corresponding to the core yarn was supplied under the same conditions as in Table 1, and this yarn was sampled between the fluid jet nozzle and the supply roller 4 and the twist number was measured to be 700 T / m. Was.

The obtained spun tone special yarn is used for warp and weft, and
Weave a plain woven fabric at a density of 70 strands / 2.54cm, 62 strands / 2.54cm,
As a result of the usual dyeing finish, a woven fabric having a design effect with an extremely varied appearance and a soft and warm-looking pongee-like appearance was obtained.

(Effects of the Invention) As described above, the spun-tone special yarn of the present invention has a wound thick portion of 2 or more / m and entanglements and loops are formed on the entire yarn. The inner layer has a dense structure, the outer layer has a loop, and has a relatively coarse wound structure, and has a multiple wound structure. Can be imparted to a fabric using the same, with a varied appearance and a soft, warm, span-like texture.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing an embodiment of the span-tone special yarn of the present invention, FIG. 2 is a process schematic diagram showing an example of a method for producing the span-tone special yarn of the present invention, and FIGS. It is a longitudinal section and a side view showing an example of a fluid injection nozzle used when manufacturing the spanning special yarn of the present invention. A: Thick wound part, B: Detail 1 ... Core yarn 2 ... Sheath yarn 3 ... Loop 4,5 ... Supply roller 6 ... Delivery roller 7 ... Winding package 8 ... Twist point 9 …… Guide 10 …… Fluid injection nozzle 11 …… Thread passage hole 12 …… Fluid introduction hole α …… Angle between the passage hole and the fluid introduction hole

Continuation of the front page Judge Harumi Miyamoto Judge Takuko Funakoshi Judge Judge Yoshio Sugano (56) Reference JP-A-61-146835 (JP, A) JP-A-61-174438 (JP, A) JP 62-37088 (JP, A)

Claims (1)

(57) [Claims] 1. A multi-filament yarn is supplied to one fluid injection nozzle which imparts a turning force and a propulsion force to a yarn by having a fluid introduction hole which is eccentric and angled with respect to the yarn passage hole, and supplies a fluid. At the yarn inlet side of the injection nozzle, another multifilament yarn overfed by 5% or more than the multifilament yarn is combined with the multifilament yarn to move the combining yarn point, and the yarn outlet of the fluid injection nozzle is moved. A core-sheath structured yarn having a thick wound portion obtained by drawing the yarn in a direction different from the fluid jetting direction and applying a jet to the side surface of the yarn, and at least one multifilament that becomes a sheath yarn The multi-filament yarn is wound into a plurality of layers around another multifilament yarn having a core yarn, and the filament in the outer layer of the winding portion has a wound thick portion having a loop formed at least 2 / m,
In the details between the wound thick portions, the core yarn and the sheath yarn are entangled with each other and a loop-shaped special yarn formed by forming a loop.