JP5903467B2 - Manufacturing apparatus for composite yarn having different color pattern in length direction, manufacturing method of composite yarn, composite yarn obtained by the manufacturing method, and pile fiber product using the composite yarn - Google Patents

Description

In the present invention, a composite yarn in which two or more different-colored yarns that have undergone a lower twist are arranged in parallel is twisted by a torque in the untwisting direction that the lower twist of each different-colored yarn potentially has. Of the composite yarn that is held together with the covering yarn at the same time, and is exposed clearly and randomly without mixing two or more different-colored fibers of different lengths in the yarn length direction . The present invention relates to a manufacturing apparatus and a manufacturing method thereof, and a pile fiber product such as various rugs made of the composite yarn manufactured by the manufacturing method and a pile fabric using the composite yarn , or an automobile interior product.

  Typical products using pile fabrics including cut piles include carpets, various rugs such as dust control mats (tufts, Wilton, Akisminster, sewing machine tufts) and automobile interiors. In these products, various pile yarns are used. In recent years, in addition to polyacryl, two or three multifilament yarns made of thermoplastic synthetic fiber materials such as polyester, polypropylene, and nylon are frequently used. ing. It is the mainstream to produce a composite yarn by twisting these multifilament yarns or interlacing multifilament fibers. At this time, two or three yarns having different hues or the same color are usually used, but these yarns are basically required to have a common workability or to have a required texture of the rug. It is common to use compatible materials of the same kind.

  In this case, many various composite yarns for piles have been proposed in which the excellent functions, physical properties, etc. found in spun yarns are ensured, and at the same time, carpets and interior products with novel color patterns can be obtained. For example, according to Japanese Patent Laid-Open No. 2000-17542 (Patent Document 1), a sliver composed of a short fiber is connected to a predetermined length every time 2 cm or more continues in the length direction of the yarn. Two types of short fibers, the short fibers in one color region and the short fibers in the other color region, which are in contact with each other and the front and back of the changing color are mixed at the boundary, and mixed at the boundary Partially different colored yarns have been proposed in which the same color of a mixture of two types of short fibers appears over the entire length. The mixed region where the two types of short fibers are mixed uses a sliver made of three or more different colored short fibers, and selectively switches two or more slivers out of three or more different slivers. It is not connected by winding on a single spindle.

  Further, for example, according to JP-T-2002-523648 (Patent Document 2), at least two continuous yarns having different colors are falsely twisted together inside a hollow spindle for false twisting to form a core yarn. It is disclosed to spirally wrap a single trumpet yarn around to form a carpet styling yarn. At this time, the length of the single trumpet yarn is longer than the length of the core for any given unit length of the carpet styling yarn. The false twisting is performed by twisting and untwisting, or by alternately twisting ply jets. At least two of the continuous yarns having this bulkiness are colored in different colors or can be colored in different colors. Continuous yarns are either continuous bulky continuous filament yarns and / or continuous staple spun yarns. The carpet styling yarn in which the trumpet yarn is wound and the core yarn is false twisted is wound up by a winder through an accumulator.

  On the other hand, for example, in US Pat. No. 6,536,200 (Patent Document 3), a plurality of multifilament yarns having different colors are alternately displayed in the yarn length direction. A multicolor composite yarn is disclosed in which a mixed region is formed in which multifilament yarns of different colors are mixed, a cover yarn is wound around the multifilament yarn, and different colors are alternately displayed in the length direction of the yarn Has been. This composite yarn is manufactured by supplying different-colored multifilament yarns to the stuffer box and applying crimps, and then sending them to a tension changing device that can change the tension for each multifilament yarn. The tension is changed alternately, and a multifilament yarn having a high tension is wrapped with a multifilament yarn having a low tension, and this is performed alternately, and then the cover yarn is wound and covered.

  For example, Japanese Patent Publication No. 2007-500796 (Patent Document 4) also discloses a method for producing a multicolor effect yarn. In this manufacturing method, a plurality of continuous crimped yarn (BCF) singles yarns having at least one different color from the others are individually entangled with air jets at a first period and a first degree of entanglement. The air jet entangled BCF singles yarns are aligned in parallel bundles with substantially zero twist. The parallel bundles are entangled together with an air jet at a second period and a second degree of entanglement. At this time, the second period and the second entanglement degree are both lower than the first period and the first entanglement degree, and the wrapping yarn is spirally wound around the core yarn by direct twisting equipment. It is wound up after being wrapped into a shape. The wrapper yarn at this time may be the same color as or different from any of the plurality of BCF singles yarns. The fineness of the wrapper yarn is made lower than any of the fineness of the BCF singles yarn.

JP 2000-17542 A JP 2002-523648 A US Pat. No. 6,536,200 Special Table 2007-500796

  By the way, in the partially different color yarn disclosed in Patent Document 1, since the short fibers of two or more colors are entangled in the color separation between different color slivers, the division is clear and the division is used. It is possible to draw a pile pattern such as carpet clearly. However, even if it is possible to draw a large geometric pattern with solid eyes separated by a pile surface, it expresses a novel and unique color pattern that gives a fresh impression that the color changes slightly throughout the pile surface. It ’s difficult.

Further, the bulky carpet styling yarn disclosed in Patent Document 2 is often subjected to repeated tension and heat shrinkage in the production process, and false twisting is performed on the raw material yarn of the carpet styling yarn. Even if it is, the form due to the false twisting made earlier is likely to collapse due to repeated heating and cooling such as the subsequent dyeing process and drying process, or the tension and relaxation by the twisting process, the winding process, and the stretching process, It is difficult to recover 100% of the fiber form imparted by crimping. This is one of the factors that hinder the expansion of sales channels of polypropylene fibers and polyester fibers, which are expected as one of the main raw materials for rugs. Moreover, this carpet styling yarn is in an entangled state in which two or more color yarns are false twisted, and the entanglement between the single-fiber multicolor composite yarns constituting each yarn is disjoint and appears on the pile surface. It is difficult to obtain an interesting and innovative pattern because it lacks the clearness of the color change, and becomes a simple marbling pattern with a certain degree of regularity in the length and pitch of each color pattern .

  On the other hand, the multicolor composite yarn proposed by the above-mentioned patent document 3 is different from the partially different-colored yarn disclosed in the above-mentioned patent document 1 in different colors due to yarns having two different colors in the longitudinal direction of the composite yarn. Can be expressed alternately in any length, but when trying to obtain a complex and innovative composite yarn rich in design, a complicated switching operation for switching the tension of each yarn for color selection and The operation of selecting the duration of the tension is necessary, which leads to an increase in cost. In addition, the multicolor composite yarn proposed by Patent Document 3 is passed through a stuffer box before being introduced into the tension switching device and is crimped to provide bulkiness. Except for the same reason as the carpet styling yarn disclosed in the above-mentioned Patent Document 2, it is difficult to maintain the bulkiness of the yarn, and the shrinkage and stretchability of the yarn itself are likely to be poor, resulting in a pile product. There is little expectation with respect to the feeling of swelling and texture, and the elastic recovery rate.

  The multi-color effect yarn disclosed in Patent Document 4 includes two or more different BCF singles yarns individually entangled with a first period and a first degree of entanglement, and then two or more. The BCF singles yarns of different colors are entangled together with air jets with the second period and the second entanglement degree, and a wrapper yarn is wound around the periphery in a spiral shape. When the multicolor effect yarn obtained in this way is used as a pile yarn such as carpet, a pattern almost the same as a conventional space dyed yarn is displayed on the pile surface. Therefore, the pattern of the pile surface using the conventional space dyed yarn can be divided into colors by continuously lengthening different color areas as described in Patent Document 1 above, but on the other hand, the color changes. Has a problem that the colors tend to be unclear because fibers of different colors are mixed at the boundary.

  Furthermore, in the multicolor effect yarn proposed by Patent Document 4, in particular, as in the case of the composite yarn disclosed in Patent Document 1 and Patent Document 3, the color that appears in the length direction of the yarn. Therefore, it is necessary to perform a highly precise adjustment (control) operation. As a result, the length and order in which different colored threads appear are likely to be regular and monotonous patterns, and this is a natural phenomenon that occurs by chance. We cannot expect a change in color.

  The present invention has been made to overcome these conventional problems, and particularly in pile yarns used for rugs, which have irregular lengths and rows in the pile row direction and the pile row transverse direction. In addition to displaying different colors randomly, the pitch of the displayed colors is rich in changes that cannot be artificially controlled. A composite yarn with a pattern, an efficient production device and method for producing the composite yarn, and a high-quality pile fiber product in a striped pattern with a variety of delicate and innovative colors using the composite yarn. It is intended to provide.

One of the objects is one of the basic configurations of the present invention, and is obtained by a manufacturing apparatus and a manufacturing method of the present invention described later, and has at least two different colors in an independently aligned state. Yarns and covering yarns wound around the whole of the yarns at an equal pitch, and the yarns of different colors are maintained in an aligned state without being mixed, and each yarn is a yarn. A twist is made at a substantially constant pitch and length in the length direction, and the number of twists of each of the different colored yarns is 0 to 10 T / m, and the wound around the different colored yarns winding only the number of covering yarn is 100 to 300 times / m, a composite yarn in the twisted state, when viewed from a particular direction which is perpendicular to the longitudinal direction, along the length of the yarn different colors Each of the yarns has an irregular pitch and length, and Switching parts, which are clearly sequentially exposed to each yarn without mixed-fiber is achieved by a composite yarn having a unique pattern, characterized in that.

  According to the most preferable aspect of the present invention, the two or more yarns having different colors are made of synthetic resin multifilament yarn, and the covering yarn is made of monofilament yarn or multifilament yarn. However, the present invention may include a spun yarn as a part of the two or more yarns of different colors, and in this case, the yarns of different colors other than the spun yarn are also made of a synthetic resin multi-fiber. The covering yarn is preferably a filament yarn, and the covering yarn is preferably composed of a monofilament yarn or a multifilament yarn.

  The fineness of each of the two or more different colored yarns is in the range of 300 to 2200 dTex, the total fineness of the two or more yarns is 5000 dTex or less, and the total fineness of the covering yarn is 30 to 50 dTex / It is desirable that it is (1 to 10f). The covering yarn is preferably made of a monofilament yarn or multifilament yarn made of colorless and transparent synthetic resin.

A composite yarn having such a form and a color pattern is efficiently and continuously manufactured by a manufacturing apparatus and a manufacturing method for a composite yarn having a different color pattern of the present invention described below.
The basic structure of the manufacturing apparatus is a hollow spindle that actively drives and rotates at a rotational speed of 50 to 5000 revolutions / min, and different colors that are aligned with each other having a twist of 0 to 10 T / m. Each of the two or more yarns is independently supplied to the yarn introduction port of the one end opening of the hollow spindle, and is attached and fixed to the hollow spindle. A winding body of a covering yarn supplied to the yarn introduction port together with the yarn, and a composite yarn drawn together with the covering yarn from the yarn outlet port of the other end opening through the inside of the hollow spindle are required. Between the winding part wound up with tension, the yarn outlet and the winding part, arranged in the vicinity of the downstream side of the yarn outlet and twisted in the aligned state Irregular in the yarn length direction It is characterized in that it comprises a torsion management adjuster for managing adjusting the pitch and length of the color pattern of each yarn of different colors sequentially exposed with the pitch and length, a.

  The winding body is fixedly attached to the hollow spindle by gradually increasing the outer diameter of the hollow spindle from the end of the yarn introduction port to the end of the yarn lead-out port with a slight inclination angle. The center hole diameter of the hollow core of the winding body into which the spindle is inserted and fixed is made slightly larger than the outer diameter of the hollow spindle along its axis, and has the same inclination angle as the outer diameter of the hollow spindle. It is preferable to form a head cone. As described above, when the hollow spindle and the winding core are combined, and at the same time, the torsion management adjustment tool is fixed to the yarn outlet port of the hollow spindle, the winding body is fitted and fixed to the hollow spindle. And the winding body and the torsion management adjusting tool rotate at the same rotational speed.

  In addition, the basic structure of the above manufacturing method is that a winding spindle of a covering thread is mounted and fixed on a hollow spindle that rotates at a high speed, and two or more individually separated yarns having a lower twist of 0 to 10 T / m. And introducing into the yarn introduction port of the hollow spindle to be driven and rotated in a state of being independently aligned through a guide member, and a drawing end of the covering yarn wound around the winding body, Introducing into the yarn introduction port of the rotating hollow spindle together with two or more different colored yarns introduced independently, and substantially adding to the yarn introduction port of the hollow spindle. Wrapping the covering yarn unwound from the wound body around two or more differently colored yarns that are not twisted and are in parallel, and the composite yarn around which the covering yarn is wound is Pulling out the first ring from the yarn outlet opening at the other end in the axial direction of the spindle while applying a predetermined tension through the center of the first ring-shaped member which is one of the components of the torsion management adjusting tool; And winding the composite yarn drawn through the center of the cylindrical member onto a winding bobbin while maintaining the stretched state under a predetermined tension.

  The torsion management adjustment tool has a center of rotation on the axis of the hollow spindle and a first ring-shaped member that rotates integrally with the hollow spindle, and the composite wound around the winding bobbin When the yarn is viewed from a specific direction perpendicular to the longitudinal direction, the differently colored yarns in the aligned state are twisted at irregular pitches and lengths in the yarn length direction. Each of the yarns is characterized in that the color pattern switching part is clearly and sequentially displayed for each color of the yarn without mixing.

  In the invention according to the above manufacturing apparatus, preferably, a separating member for independently separating two or more different colored yarns and guiding them to the yarn introducing port is arranged near the upstream side of the yarn introducing port of the hollow spindle. Has been. Further, according to a preferred aspect of the torsion management adjusting tool, the torsion management adjusting tool has a first ring-shaped member having a rotation center on the axis of the hollow spindle and rotating integrally with the hollow spindle. The first ring-shaped member preferably has a second ring-shaped member that is externally fitted and fixed to the yarn outlet port of the hollow spindle, and one end held on the radial circumferential surface of the second ring-shaped member. The ends have a pair of support rods held at two points on the circumferential surface of the first ring-shaped member. Further, the first ring-shaped member has a perfect circle shape, and can be rotated at an arbitrary rotation angle between 0 ° and 90 ° around the support point by the pair of support rods, and the inclination angle is selected. It is desirable that it can be fixed and adjusted.

  According to a preferred aspect of the invention relating to the method for producing a composite yarn having a different color pattern, the fineness of each of the two or more different colored yarns is 300 to 2200 dTex / piece, and the two or more different colored yarns It is desirable that the total fineness of the strip is 5000 dTex or less and the total fineness of the covering yarn is 30 to 50 dTex / (1 to 10 f). On the other hand, when there are two different colored yarns, the two different colored yarns are guided through the guide member so as to be two sides of a triangle, and are introduced into the yarn introduction port. It is preferable. At this time, at least one of the two or more different colored yarns may be made of spun yarn. In this case, it is desirable that other different colored yarns are made of synthetic resin multifilament yarns, and the covering yarns are made of colorless and transparent monofilament yarns or multifilament yarns.

Moreover, it is preferable that the number of twists of the different colored yarns other than the spun yarn when introduced into the yarn introduction port of the hollow spindle is 0 to 10 T / m, and the same colored yarn including the spun yarn The number of windings of the covering yarn around the strip is preferably 100 to 300 times / m.
Furthermore, the invention relating to a pile fiber product in which the composite yarn having a different color pattern is used as a pile yarn, the yarn of each different color twisted in an aligned state when the pile fiber product is viewed from the surface is a yarn. The pile row formed by the composite yarns that are exposed with irregular pitches and lengths in the length direction, the color of each yarn without mixing in the display color switching region due to the twisting of different colored yarns It is characterized in that a novel and interesting striped pattern with irregular pitches and lengths extending in the pile row direction is formed on the whole clearly and clearly while switching.

Effects of the invention

  In the composite yarn having a different color pattern according to the present invention, two or more different colored yarns are used as a core yarn, and a covering yarn is wound around the periphery of the composite yarn. Even if two or more different colored yarns are non-twisted multifilament yarns, the yarns to be applied to the production apparatus of the present invention are not subjected to the previous steps (dyeing, winding, rewinding, etc.). Because of the twist that has entered for some reason and the twist that comes in from the bobbin, there is a sweet twist that is close to no twist (0 to 10 T / m). In the composite yarn according to the present invention, attention is paid to the potential untwisting torque of the lower twist, the winding torque for two or more different colored yarns by the covering yarn, and the hollow spindle that rotates by driving. The tension (winding speed of the composite yarn) between the immediately preceding yarn introduction port and the winding device disposed below the yarn outlet port of the hollow spindle was focused on.

  When this tension is applied, each of the two or more different colored yarns having a lower twist is stretched, and at the same time, the lower twist is untwisted, so that the number of twists of each yarn is reduced to -2 to +5 T / m. At this time, a torque in the untwisting direction is applied to each of the two or more different colored yarns so as to return to the opposite direction to the lower twist. At this time, two or more different colored yarns undergo a slight change in tension when wound on the winding device. When this tension is large, the lower twist is extended and the pitch is also extended. However, when the tension is lowered in this extended state, untwisting occurs in the untwisting direction opposite to the lower twist, and two or more are aligned. As a result, the yarns of different colors moving inside the hollow spindle are twisted and twisted. In addition to this twisting, the two or more yarns repeatedly and instantaneously slide with the inner peripheral surface of the rotating hollow spindle and a part of the inner peripheral surface of the first ring-shaped member of the torsion management adjusting tool described later. While maintaining the contacted and aligned state, twisting may or may not be added depending on the presence or absence of slippage at the sliding contact portion. At this time, the number of twists of two or more different colored yarns is irregularly distributed within a range of 6 to 12 turns / m.

  At the same time, the covering yarn is wound spirally around the outer periphery of the yarn in which the two or more yarns are twisted together. Even at the time of winding, the winding torque by the covering yarn acts on the yarn in which the two or more are twisted together, and further twist is imparted. The composite yarn of the present invention with this covering is wound around the winding portion via the tensioner while maintaining the twisted form by the covering yarn. The winding speed of this winding part is adjusted in advance, and the above-mentioned two or more twisted yarns have fine tension based on slight operating fluctuations due to structural factors in the details of the winding part. Although fluctuation occurs, a substantially constant tension is applied except for the tension fluctuation.

  The composite yarn of the present invention obtained in this way, when viewed from a specific direction orthogonal to the longitudinal direction, each differently colored yarn is alternately displayed with an irregular pitch and length along the length direction of the yarn. Put out. The twisted portion is not mixed, and the colors appear clearly and sequentially for each yarn. Here, in the present invention, the exposed pitch and length of two or more different colored yarns in a composite yarn generally tend to depend on the magnitude of the tension applied to the composite yarn. That is, the higher the tension, the shorter the exposed pitch and the exposed length of the different color yarn, and the lower the tension, the longer the exposed pitch and the exposed length of the different color yarn. The twisted form of two or more different colored yarns in which changes in the exposed pitch and exposed length of the different colored yarn appear at random are maintained even after winding by the covering yarn wound around the yarn.

  At this time, it is quite difficult to artificially change and adjust the expression pitch and the expression length of each of the different colored yarns during the manufacturing process because the factors for the change have not been elucidated. Various factors can be considered for changing the exposed length and pitch of each different color yarn, but one of the biggest factors is the tension and its variation, and this variation is artificially generated. A torsion management adjustment tool is employed. When using this torsion management adjustment tool, the inclination angle of the first ring-shaped member of the torsion management adjustment tool with respect to the axis of the hollow spindle is also one of the factors of the tension fluctuation, and moreover, around two or more different colored yarns. The winding torque at the time of winding the covering yarn to be wound around is also a factor. However, the winding torque when winding the covering yarn does not directly change the exposed length and pitch of the different color yarn. Under these circumstances, as a result of various experiments, it is possible to adjust the winding speed at the start of production of a new composite yarn, and to change and adjust the inclination angle of the first ring-shaped member with respect to the rotation axis of the hollow spindle. It has been found that it is particularly effective for adjusting the expression pitch and the expression length of each different color yarn.

  For example, the outline of the production method will be described by taking as an example the case of producing a composite yarn of the present invention in which one covering yarn is wound using different colored yarns composed of three multifilament yarns. A normal covering machine is used for this production. After three differently colored yarns, which are almost untwisted from three cheeses placed vertically on the floor surface, are individually taken up vertically, the twists applied in the yarn manufacturing process before the cheese and the longitudinal The upper end yarn introduction port of the hollow spindle through a plurality of various guide members including separation guides in a state where the yarns having a lower twist of about 0 to 10 T / m added with the twist generated by the removal are aligned. Lead to. The three differently colored yarns guided to the yarn introduction port are introduced from the yarn introduction port into the hollow spindle in a parallel and separated state by the separation guide. At this time, the number of twists of each yarn is at most about 2 to 8 T / m, which is almost untwisted. When these three different colored yarns are introduced into the upper end yarn introduction port, they are not aligned and simply arranged side by side, but fed into the hollow spindle after being guided by the different colored yarns into a triangular cylindrical shape. Good. Therefore, it is advisable to arrange three thread guides at the apex of the triangle just before the upper end yarn introduction port.

  The hollow spindle is rotated at high speed by a drive belt, and a winding body in which a covering thread is wound in a cone shape is mounted and fixed on the hollow spindle. The covering yarn that is rewound from the winding body that rotates in response to the rotation of the hollow spindle is guided directly to the yarn introduction port along the outer peripheral surface of the upper end of the hollow spindle, and rotates along the opening edge of the filamentous introduction port. However, the three differently colored yarns introduced from the upper end yarn introduction port of the hollow spindle to the inside are wound in a spiral shape.

  When the covering yarn is wound around the peripheral surface of the three different colored yarns, the winding torque acts on the three different colored yarns around the center line by the covering yarn, and the upper end yarn introduction port of the hollow spindle The three different colored yarns are twisted together in one direction, and at the same time, the covering yarn to be wound maintains the twisted form of the three different colored yarns and passes through the hollow spindle to the yarn outlet at the lower end. It moves and is intercepted via a traverse drum and wound on a bobbin. When the finished composite yarn is viewed from a specific direction orthogonal to the yarn center, the pitch and length of the color appearing on the composite yarn are generally long and monotonous, but the appearing color is also clear and color. Switching is also made clear. On the other hand, when the torsion management adjusting tool is attached and fixed to the lower end yarn leading portion of the hollow spindle, the produced composite yarn is exposed on the composite yarn when viewed from a specific direction perpendicular to the yarn center. The pitch and length of the color are not only significantly shorter than when the torsion management adjustment tool is not installed, but also the arrangement increases irregularly, and when this is woven into a carpet as pile yarn, the twist management Compared with the case where no adjuster is attached, the complexity of the color change and arrangement of stripes due to different colored yarns is increased, and a fresh and beautiful carpet with a clean appearance can be obtained.

Here, the material of the three different colored yarns is not particularly limited, but generally, a multifilament yarn made of a thermoplastic synthetic resin is a main material. It can also be set as a spun yarn using short fibers made of synthetic resin or natural fibers.
The above-described composite yarn having a different color pattern according to the present invention, an apparatus and method for manufacturing the composite yarn, and a specific configuration and operational effects of a pile fiber product using the composite yarn are described below. This will be described in more detail according to the form.

It is a partial external view which shows typically the structural example of 1st Embodiment which concerns on the composite yarn of the different color pattern which concerns on this invention when using two different color yarns. It is a partial external view which shows typically the structural example of 2nd Embodiment which concerns on the composite yarn of the different color pattern which concerns on this invention when using three different color yarns. It is process explanatory drawing which shows roughly an example of the manufacturing process of the composite yarn of the different color pattern which concerns on this invention when using two different color yarns of 1st Embodiment. It is an enlarged view of the covering thread winding part in the said process. It is an enlarged view which shows typically arrangement | positioning of the representative example of the separation bar arrange | positioned just before the hollow spindle in 2nd Embodiment. It is an enlarged view of the covering thread winding part of the second embodiment. It is an enlarged front view of the torsion management adjusting tool arranged at the yarn outlet port of the hollow spindle. It is an enlarged side view of the torsion management adjusting tool arranged at the yarn outlet port of the hollow spindle. It is the elements on larger scale of the pile carpet which used the composite yarn of the different color pattern of this invention as a pile yarn.

  In the present invention, the main characteristic point of the composite yarn having a different color pattern is that two or more different colored yarns arranged in parallel are twisted around the yarn axis, Covering yarns made of synthetic resin filaments thinner than filament yarns are coiled around the surface to maintain the twisted form of two or more different colored yarns, and the entire yarn is orthogonal to the longitudinal direction. When viewed from a specific direction, the surface of each of the different colored yarns is successively and clearly displayed with an irregular pitch and length. The composite yarn having such a different color pattern is suitably applied to pile yarns for carpets and automobile interior materials.

  The composite yarn is not limited to a synthetic resin, and may be partially composed of natural fibers such as wool and hemp or semi-synthetic fibers, and the synthetic fibers may be polypropylene fibers, polyacrylic fibers, polyester fibers, nylon fibers. Etc. can be used alone or in combination. The covering yarn wound around two or more different colored yarns is preferably composed of a colorless and transparent monofilament yarn or multifilament yarn made of synthetic resin, and the thickness of each yarn is two or more. It is made sufficiently thin compared to the thickness of the different colored yarn. Preferably, the fineness of each single yarn of different color is 300 to 2200 dTex, the total fineness of two or more different color yarns is 5000 dTex or less, and the total fineness of the covering yarn is 30 to 50 dTex / (1 to 10 f). ). However, the fineness listed here is merely a typical fineness and is not limited thereto.

Hereinafter, the present invention will be specifically described based on representative embodiments with reference to the drawings.
FIG. 1 schematically shows a first embodiment of a two-color patterned composite yarn according to the present invention. FIG. 2 schematically shows a second embodiment of the three-color pattern composite yarn according to the present invention. The composite yarn 1 according to the first embodiment is composed of two aligned different colored yarns 2 and 3 and one covering yarn 4. The composite yarn 1 can be manufactured using a covering machine 10 schematically shown in FIG.

  A first horizontal guide bar 11 is arranged at the uppermost stage of the covering machine 10, and the two different colored yarns 2 and 3 fed from below the back of the covering machine 10 are comb-shaped yarn guide members. In a state where the space 12 is separated, it is guided by being separated by the first lateral guide bar 11 and guided downward. The two different colored yarns 2 and 3 are unwound from a cheese (not shown) whose winding axis is vertically placed on a rack (not shown) of the covering machine 10 to be vertically unwound, and the first horizontal Through the guide bar 11 and the plurality of guide members, the hollow fiber 13 is sent toward the upper end yarn introduction port 13a of the hollow spindle 13 that is installed below and rotates at a required rotational speed. The two different colored yarns 2 and 3 at this time should be essentially untwisted, but usually a process for producing these yarns (dyeing, drying, finishing, winding, rewinding, etc.) Sweet twists (0 to 10 T / m), such as twists that are naturally imparted at the top of the cheese, and twists that are imparted when the cheese is taken up vertically in the vertical direction are contained.

  The two different colored yarns 2 and 3 that are separated in the left and right and are arranged in parallel are front and rear and left and right so as to sandwich a second horizontal guide bar (separation bar) 14 disposed in the immediate vicinity of the numerous hollow spindles 13 in the front and rear. As shown in an enlarged view in FIG. 4, it is separated into the front, rear, left and right, and then inserted in parallel with the upper end yarn introduction port 13 a of the hollow spindle 13. Is moved at a predetermined winding speed.

  At this time, the cone 6 is mounted and fixed to the hollow spindle 13, and the covering yarn 4 wound in a cone shape is pulled out from the peripheral surface of the cone 6 that rotates at the same rotational speed as the hollow spindle 13 that rotates. . The two different colored yarns 2 and 3 guided as described above are introduced in parallel to the upper end yarn introduction port 13 a of the hollow spindle 13. Two different-colored yarns 2 and 3 are introduced into the upper end yarn introduction port 13a, and the covering yarn 4 is a peripheral surface of the two different-colored yarns 2 and 3 traveling in the winding direction inside the hollow spindle 13. Wrap in a spiral shape. Here, the covering yarn 4 introduced into the upper end yarn introduction port 13a rotates while being in sliding contact with the opening edge of the upper end yarn introduction port 13a at the time of introduction, and on the peripheral surfaces of the two different colored yarns 2, 3. Wrap around. At this time, the number of windings of the covering yarn wound around the different colored yarns 2 and 3 is significantly lower than the number of rotations of the cone 6.

  In the present invention, the number of windings of the covering yarn 4, the number of rotations of the hollow spindle 13, and the winding speed of the composite yarn 1 are in the relationship of spindle rotational speed ÷ number of windings = winding speed. . For example, assuming that the winding speed is uniformly 40 m / min and the spindle rotation speed is 3 kinds of 2800 rotations / min, 5760 rotations / min, and 7200 rotations / min, the number of windings of the covering yarn 4 is 70 times, 144 Times, 180 times. In this way, by changing the two setting values from the relationship between the number of windings of the covering yarn 4, the rotation number of the hollow spindle 13, and the winding speed of the composite yarn 1, one remaining setting value is obtained. Therefore, the present invention is not limited to the specific numerical values described above. Here, the spindle rotation speed can be changed by changing the gear ratio of the drive system.

  On the other hand, the two different-colored yarns 2 and 3 around which the covering yarn 4 is wound are continuously applied with the winding tension while being introduced into the upper end yarn introduction port 13a and running, and in the direction of the yarn extension together with the lower twist. Although it should continue to be stretched, slight expansion and contraction occurs in the length direction of the yarn under the influence of slight fluctuations in the winding tension. At this time, a torque in the untwisting direction for untwisting the lower twist acts on each of the two different colored yarns 2 and 3. When the torque in the untwisting direction is working, when the two different colored yarns 2 and 3 approach each other, the torque in the untwisting direction works and is entangled with each other, and is twisted gently in the direction opposite to the lower twist. At this time, the covering yarn 4 unwound from the cone 6 at the yarn introduction port 13a of the hollow spindle 13 has a predetermined winding force on the peripheral surfaces of the two different-colored yarns 2 and 3 that are twisted and run as described above. Wrap with. Even at the time of winding, the winding torque of the covering yarn 4 works to add additional twist to the two different colored yarns 2 and 3.

  Although the additional twist by the covering yarn 4 is not considered to directly affect the pitch and length when the two different-colored yarns 2 and 3 are switched, the slight variation in the winding speed results in the two different-colored yarns 2 , 3 is caused to fluctuate in tension, and the traveling different colored yarns 2, 3 are caused to expand and contract or wavy. Due to the expansion and contraction and wavy movement, a part of the traveling different colored yarns 2 and 3 instantaneously contacts or slides on a part of the inner peripheral wall surface of the hollow spindle 13. If the sliding contact resistance between the different colored yarns 2 and 3 and the inner peripheral wall surface of the hollow spindle 13 is received during this sliding contact, a twisting torque is applied to the different colored yarns 2 and 3, and the different colored yarns 2 and 3 are twisted like false twist. Is given. In this twisting, since the different colored yarns 2 and 3 continue to run with the end gripped between the separation bar 14 and the winding bobbin 7 of the winding part, the part to be untwisted is untwisted. The twist is fixed while maintaining the twisted state. In addition, the position where the twist is applied is not constant, and the different colored yarns 2 and 3 appear randomly in irregular positions in irregular lengths in irregular lengths.

  If the tension on the different colored yarns 2 and 3 is constant, no particular untwisting force acts on the two different colored yarns 2 and 3, and the yarn reaches the winding portion without being actively twisted. However, as described above, there are usually differences in processing accuracy, assembly accuracy, and the like between the constituent members of the winding unit, and it is difficult to operate with the required winding accuracy due to this difference. As a result, the winding unit is not operated at a constant speed, and the winding speed varies slightly.

  An example of the behavior when the different colored yarns 2 and 3 are wound around the winding portion is as described above, but other factors, for example, the inner surface of the hollow spindle 13 is smooth, and the different colored yarns 2 and 3 are hollow. When there is slip between the spindle 13, the twist is unlikely to enter the different colored yarns 2 and 3. For this reason, in the above-described mechanism, it is extremely difficult to adjust or control the twist interval (pitch) or twist length between the different colored yarns 2 and 3 during the manufacturing process of the composite yarn. However, it was difficult to obtain satisfactory products except for carpets with special applications.

  Therefore, the present inventors repeated further examinations and experiments in order to find a mechanism capable of adjusting the twist interval (pitch) and twist length between two or more different colored yarns even during the manufacturing process of the composite yarn. It was. As a result, as shown in FIGS. 3 and 4, the torsion management adjusting tool 17 having a unique structure according to the present invention is mounted and fixed to the lower end thread outlet 13b of the hollow spindle 13, and the torsion management adjusting tool 17 is fixed. 8, the inclination angle with respect to the central axis of the hollow spindle 13 can be adjusted to an arbitrary inclination angle within a range of 0 ° to 90 °, for example, while the covering machine 10 is in operation. Even if it was impossible, it was found that the twist interval (pitch) and the twist length between two or more different colored yarns can be adjusted and managed when not in operation.

  As shown in FIGS. 7 and 8, the torsion management adjusting tool 17 includes a first ring-shaped member 17a made of synthetic resin, a second ring-shaped member 17b also made of synthetic resin, and first and second ring-shaped members. A saddle-like metal which is a pair of parallel support rods in which the centers of 17a and 17b are arranged on the same straight line, and the first and second ring-shaped members 17a and 17b are fixed to both ends with a predetermined interval. And a plate piece 17c. Here, one end of the pair of bowl-shaped metal plate pieces 17c is rotatably mounted and fixed. According to the illustrated example, at one end of the pair of bowl-shaped metal plate pieces 17c, the first ring-shaped member 17a has an arbitrary diameter on the outer peripheral surface of the first ring-shaped member 17a around the diameter. For example, it is mounted so that it can be rotated in units of 10 ° from 0 ° to 90 ° and can be fixed at each inclination angle. One second ring-shaped member 17b is fixed to the other end of the pair of hook-shaped metal plate pieces 17c, and is closely fitted to the outer peripheral end of the hollow spindle 13 on the yarn outlet 13b side. Fixed.

As described above, the second ring-shaped member 17b of the twist management adjusting tool 17 having the above simple structure is tightly fitted and fixed to the outer peripheral end portion of the hollow spindle 13 on the yarn outlet port 13b side. The production test of the composite yarn 1 having the different color pattern of the present invention was conducted.
The inclination angle of the first ring-shaped member 17a is adjusted in two ways of 10 ° and 90 °, and the number of rotations of the hollow spindle 13 is set in two ways of 3040 rotations / min and 5760 rotations / min for each inclination angle, As for the number of rotations of the hollow spindle 13, the number of windings of the covering yarn 4 is 76 times / m and 144 times / m, and each of the two times of winding of the covering yarn 4 is 76 times / m, 144 times / For each m, the length and pitch of the exposed pattern were measured. The different colored yarns 2 and 3 used in this experiment consisted of multi-filament red and white yarns with a single yarn fineness of 1200 dTex, and one covering yarn 4 has a colorless and transparent fineness. It is composed of 40dTex / 8f multifilament. All of these yarns are composed of polypropylene fibers. The number of lower twists of the two-color yarns 2 and 3 when introduced into the hollow spindle 13 is in the range of 7 to 15 T / m.

  As a result of this manufacturing test, when the inclination angle of the first ring-shaped member 17a of the torsion management adjustment tool 17 was 10 °, the spindle rotation speed was 3040 rpm / min and 5760 rpm / min. The length of each color pattern exposed on the composite yarn 1 was randomly distributed within the range of 16 mm to 120 mm, and the average length was 51 mm. On the other hand, the length of each color pattern expressed in the composite yarn 1 obtained by the latter was randomly distributed within the range of 11 mm to 96 mm, and the average length was 41 mm.

  Furthermore, the test results when the inclination angle of the first ring-shaped member 17a of the torsional management adjusting tool 17 is 90 ° are the composite results obtained from the former when the spindle rotation speed is 3040 rotations / min and 5760 rotations / min. The length of each color pattern of the yarn 1 was randomly distributed over a wide range of 12 mm to 155 mm, and the average length was 56 mm, which was 5 mm longer than 51 mm when the tilt angle was 10 °. On the other hand, the length of each color pattern appearing on the composite yarn 1 obtained by the latter is also randomly distributed over a wide range of 1 mm to 135 mm, the average length is 48 mm, and the former average length is 41 mm. It is 7mm longer than there are. In any case, when the inclination angle is 10 ° and 90 °, the length of the color pattern is too long when the inclination angle is 90 °. Become.

  Further, when looking at the pitch during the same color appearance in the composite yarn 1 having a different color pattern manufactured as described above, the first ring-shaped member even if the spindle rotation speed is the same 3040 rotations / min. When the inclination angle of 17a is 10 ° and 90 °, when the inclination angle is 10 °, the pitch is expressed randomly within a range of 30 mm to 180 mm, whereas when the inclination angle is 90 °, the pitch It can be seen that they are also randomly displayed within a wide range of 30 mm to 200 mm. On the other hand, when the spindle rotation speed is 5760 rotations / min, which is almost twice the rotation speed, the inclination angle of the first ring-shaped member 17a is 10 ° and 90 °, and the inclination angle is 10 °. The pitch range is randomly expressed within an appropriate range of 30 mm to 100 mm, but when the inclination angle is changed to 90 °, the pitch is randomly distributed within a wide range of 30 mm to 130 mm. As for the pitch, when the inclination angle of the first ring-shaped member 17a is 10 °, the length of the pitch is a moderate length compared to the case of 90 °, similarly to the length of the one color pattern. Thus, the carpet pattern obtained from the composite yarn 1 also has an appropriate complexity.

  As a result of the above manufacturing test, the first ring-shaped member 17a is fixed in a horizontal state, and there is almost no interference between the two different colored yarns 2 and 3 and the torsion management adjusting tool 17, and the first axis with respect to the axis of the hollow spindle 13 is used. When the inclination angle of the ring-shaped member 17a is 90 °, the winding frequency of the cover ring yarn 4 is 76 times / m (spindle speed: 3040 times / min) and 144 times / m (spindle speed: 5760 times / min). There is only a difference in the number of twists based on the difference between the first ring-shaped member 17a and no difference in the number of twists. On the other hand, when the inclination angle of the first ring-shaped member 17a with respect to the axis of the hollow spindle 13 is 10 °, the two different colored yarns traveling on the axis of the spindle 13 are the upper periphery of the first ring-shaped member 17a. After slightly contacting a part of the surface, passing through the center of the first ring-shaped member 17a while slightly bending, and contacting the part of the lower peripheral surface of the first ring-shaped member 17a, the first ring-shaped The traveling is continued in the winding direction so as to be part of the same circumferential surface of the member 17a. Under the influence of this slight contact and bending, the two different colored yarns 2 and 3 are twisted in the additional twisting direction, and as described above, the switching pitch of the two different colored yarns 2 and 3 and the switching length thereof. Both are relatively short, and an appropriate length can be obtained. In addition, additional twisting applied to the two different colored yarns 2 and 3 is not performed at a constant cycle in the yarn length direction but is irregularly spaced, so that the switching pitch and the switching length are Both are not uniform and random, and the surface pattern of the carpet obtained by using this composite yarn 1 has an appropriate complexity, and an appropriate pattern length and pitch length are randomly set along the direction of the pile row 19a. A striped pattern with excellent excitement can be obtained.

  FIG. 9 shows the conditions described above except that the inclination angle of the torsion management adjustment tool 17 with respect to the axis of the first ring-shaped member 17a hollow spindle 13 is 10 ° and the number of windings of the covering ring 4 is 144 turns / m. FIG. 3 is a plan view schematically illustrating an enlarged part of a surface of a tuft carpet 19 woven using a composite yarn having two color patterns manufactured below as a pile yarn. As can be understood from this figure, the tuft carpet 19 according to the present embodiment has a different color pattern composed of two yarns having different colors and many different sizes in the direction of the pile row 19a when viewed from the surface. A striped pattern is formed by the pile rows 19a which appear irregularly and sequentially on the surface, and are interesting and novel, and the colors are clearly switched.

  In the present embodiment, the fineness of each single yarn in the two or more different-colored yarns 2 and 3 is 2200 dTex, the total fineness is 4400 dTex, and the yarn having the fineness used for a normal carpet is adopted. . The thickness of these different colored yarns 2 and 3 is not limited to the above-mentioned fineness, and the fineness of the single yarn is 300 to 2200 dTex depending on the use of the pile product, and the total fineness of the constituent yarn composed of 2 or more is 2000 to 2000 It can select suitably from the range of 5000dTex. On the other hand, the covering yarn 4 uses a transparent multifilament twisted yarn having a total fineness of 44 dTex / 8f. Even in this covering yarn 4, the total fineness is, for example, in the range of 30 to 50 dTex. Can be selected arbitrarily.

  Next, referring to FIGS. 2 and 3, the second embodiment of the composite yarn having a different color pattern composed of the three different color yarns 2, 3, 5 and the manufacturing method thereof will be described in detail. In the second embodiment, the main difference from the first embodiment is that the number of different colored yarns is changed from two to three, and the different colored yarns 2, 3 and 5 are used as the yarns of the hollow spindle 13. It merely defines the positional relationship between the yarns 2, 3, and 5 when they are fed into the introduction port 13a, and other points are not essentially different from those of the first embodiment. Therefore, even in the following description of the third embodiment, members that are substantially the same as those in the first embodiment are given the same reference numerals, and the detailed description and the same manufacture of members having the same reference numerals are given. A description of the procedure is omitted.

  The composite yarn 1 according to the second embodiment is composed of three differently colored yarns 2, 3, 5, and a single covering yarn 4. Similar to the first embodiment, the composite yarn 1 can be manufactured by using a covering machine 10 schematically shown in FIG. These three different colored yarns 2, 3, and 5 are also rewound vertically upward from a bobbin (not shown) placed vertically on a gantry (not shown) installed on the back of the covering machine 10, It is fed toward the hollow spindle 13 that rotates and is driven downward while being separated in parallel through the first lateral guide bar 11 and the separation bar 14.

  The three different colored yarns 2, 3, and 5 that are separated from each other in the left and right and in the parallel state are guided by sandwiching the separation bars 14 arranged in the immediate vicinity of the tops of the numerous hollow spindles 13 in the front and rear directions, and are enlarged in FIG. As shown, the differently colored yarns 2, 3 and 5 separated into the front, rear, left and right are guide members 15 having three yarns arranged at the apex of a triangle in the vicinity of the upper end yarn introduction port 13a of the hollow spindle 13. It is inserted into the opening of the upper end yarn introduction port 13a via (15a to 15c), and moves downward in the hollow portion of the hollow spindle 13.

  At this time, the cone 6 is attached and fixed to the hollow spindle 13, and the covering yarn 4 drawn from the cone 6 is opened at the upper thread introduction port 13a of the hollow spindle 13 that rotates as shown in FIG. It is taken up while rotating along the edge. The three different colored yarns 2, 3 and 5 approach the upper end yarn introduction port 13a of the hollow spindle 13 in a non-twisted state, and there are three guide members 15a to 15c arranged at the apex portion of the triangle. Books are introduced side by side. At the moment when the three different colored yarns 2, 3 and 5 are introduced into the upper end yarn introducing port 13a, the covering yarn 4 is spirally wound around the circumferential surfaces of the three different colored yarns 2, 3 and 5 that travel. Stick.

  Here, the three different colored yarns 2, 3, 5 are guided by the three guide members 15 a to 15 c so as to be arranged in a triangular shape and guided to the upper end yarn introduction port 13 a of the hollow spindle 13. Therefore, the constituent fibers of the different colored yarns are twisted with an appropriate pitch and length around the yarn axis as in the first embodiment due to the factors described above, without mixing and changing the arrangement of the triangular cylinder. On the other hand, after being pulled out from the lower end yarn outlet 13 b of the hollow spindle 13, it is guided by the traverse drum 16 at the lower end winding portion of the covering machine 10 and wound around a paper tube (not shown) to form the bobbin 7. The Thus, the composite yarn 1 having a three-color pattern according to the second embodiment is industrially continuous using the covering machine 10 that is substantially the same as the covering machine 10 used in the first embodiment. Can be manufactured efficiently. The pile product using the composite yarn 1 according to the second embodiment obtained as a pile yarn in this way is a high-quality striped pattern product that clearly displays a fresh and novel color pattern that has never existed before. .

  In the present invention, the fineness of each single yarn in the three different colored yarns 2, 3, and 5 is 700 dTex, the total fineness is 2100 dTex, and the yarn having the fineness used for a normal carpet is adopted. . The thickness of these different colored yarns 2, 3, and 5 is not limited to the above-mentioned fineness, and the fineness of the single yarn is 200 to 1600 dTex, and the total fineness of the three constituent yarns is 2000 depending on the use of the pile product. It can select suitably from the range of -5000dTex. On the other hand, a transparent multifilament twined yarn having a total fineness of 44 dTex / 8f is used for the covering yarn 4, but even in this covering yarn 4, the single fiber fineness and the total fineness are, for example, 30 It can be arbitrarily selected within a range of ˜50 dTex / (1 to 10 f).

  Further, multifilament yarns made of synthetic resin are used for the three different colored yarns 2, 3, and 5. The number of twists of each different-colored single yarn when introduced into the yarn introduction port 13a of the hollow spindle 13 is a yarn with almost no twist of 0 to 8 T / m, and the three different-colored yarns 2, 3, The number of windings of the covering yarn 4 around 5 is preferably 60 to 150 times / m, the same as in the first embodiment.

  The above is a description of a preferred embodiment of the present invention. The present invention, for example, according to the structure and use of the pile product to which the composite yarn is applied, for example, the number and thickness of different colored yarns used, and the type of each yarn. If you want to change the length and pitch of different color patterns, you can use various combinations of materials, etc. at the start of production of composite yarns with new color patterns. , The winding speed of the composite yarn, the inclination angle of the first ring-shaped member of the torsion management adjusting tool, and the like can be appropriately adjusted and changed.

1 Composite yarn 2, 3 (different color pattern) Two different yarns (different color yarn)
2, 3, 5 3 different colored yarns (different colored yarns)
4 Covering thread 6 Cone 7 Bobbin 10 Covering machine 11 First lateral guide bar 12 Comb-shaped thread guide member 13 Hollow spindle 13a (Upper end) Thread inlet 13b (Lower end) Thread outlet 14 Separation bar 15 (15a to 15c) Guide member 16 Traverse drum 17 Torsion management adjustment tool 17a First ring-shaped member 17b Second ring-shaped member 17c A pair of support rods (saddle-shaped metal plate pieces)
18 Tensioner 19 Carpet 19a Pile Row

Claims (13)

Each of the different colored yarns, comprising at least two or more different colored yarns that are independently aligned, and a covering yarn wound around the whole of the yarns at an equal pitch. The fineness of the yarn is 300-2200 dTex, the total fineness of the two or more yarns is 5000 dTex or less, the total fineness of the covering yarn is 30-50 dTex / (1-10 f), each of the different colors The yarns are kept in an aligned state without being mixed, and each is twisted at a substantially constant pitch and length in the yarn length direction. The number is 0 to 10 T / m, the number of windings of the covering yarn wound around the differently colored yarn is 100 to 300 times / m, and the composite yarn in the twisted state is specified to be orthogonal to the longitudinal direction. From the direction of The yarns of different colors along the length direction of the yarns have irregular pitches and lengths, and the switching portions are clearly and sequentially displayed for each yarn without mixing. A composite yarn with a different color pattern in the length direction. An apparatus for producing a composite yarn according to claim 1 ,
A hollow cylindrical hollow spindle that actively drives and rotates at a rotational speed of 50 to 5000 revolutions / min;
Each of the two or more different colored yarns, each having a twist of 0 to 10 T / m and aligned, is independently fed to a yarn introduction port at one end opening of the hollow spindle. A different color yarn supply section to supply;
A winding body of a covering yarn that is mounted and fixed to the hollow spindle and is supplied to the yarn introduction port together with two or more different colored yarns,
A winding portion for winding the composite yarn drawn together with the covering yarn from the yarn outlet at the other end opening through the inside of the hollow spindle with a required tension;
Between the yarn lead-out port and the winding portion, disposed in the vicinity of the downstream side of the yarn lead-out port, and irregular in the length direction of the composite yarn twisted in the aligned state A torsion management adjustment tool that manages and adjusts the pitch and length of the color patterns of the differently colored yarns that are sequentially expressed with the pitch and length;
An apparatus for producing a composite yarn having a different color pattern in the length direction. The manufacturing apparatus according to claim 2 , wherein a separating member for independently separating and guiding two or more different colored yarns is disposed in the vicinity of the upstream side of the yarn introduction port. The torsion management adjustment tool includes a first ring-shaped member that has a center on the axis of the hollow spindle and rotates integrally with the hollow spindle.
The apparatus for producing a composite yarn according to claim 2 or 3 . The first ring-shaped member has a second ring-shaped member that is fitted and fixed to the yarn outlet port of the hollow spindle, and one end of each of the first ring-shaped member and a part of the radial circumferential surface of the second ring-shaped member facing each other. And the other end has a pair of parallel support rods holding the radial circumferential surface of the first ring-shaped member at two points.
The composite yarn manufacturing apparatus according to claim 4 . The first ring-shaped member can be selected and adjusted to an arbitrary rotation angle between 0 ° and 90 ° around a straight line connecting support points by the pair of support rods.
The composite yarn manufacturing apparatus according to claim 5 . A method for producing a composite yarn obtained by the production apparatus according to claim 2,
Attaching and fixing a winding body of the covering thread to the hollow spindle that rotates by driving;
Two or more differently colored yarns each having a lower twist of 0 to 10 T / m are separated through a guide member into a yarn introduction port that opens at one end in the axial direction of the hollow spindle that rotates. Introducing it in an aligned state,
The yarn introduction port of the hollow spindle that rotates together with the two or more different colored yarns that are separated and introduced in a state where the drawing ends of the covering yarn wound around the winding body are arranged in an aligned state To be introduced into the
Winding the covering yarn around two or more different colored yarns that are separated and introduced in a parallel state without being twisted substantially at the yarn introduction port of the hollow spindle, and the covering yarn A composite bobbin wound around the hollow spindle is drawn out from a yarn outlet opening at the other end in the axial direction of the hollow spindle while applying a predetermined tension through the center of the first ring-shaped member of the torsion management adjusting tool. Winding continuously, and
When two or more yarns of different colors are stretched with the tension applied, the untwisting torque in the direction opposite to the lower twist acts and the yarns are twisted while maintaining the parallel state of the yarns. At the same time, by repeating irregular contact with the inner peripheral surface of the hollow spindle and a part of the inner peripheral surface of the first ring-shaped member of the torsion management adjusting tool, the composite yarn wound on the winding bobbin is When viewed from a specific direction orthogonal to the longitudinal direction, the differently colored yarns in the aligned state are twisted at irregular pitches and lengths in the yarn length direction, Along the length direction of the yarn, each yarn is clearly and sequentially displayed without mixing at the pattern switching part.
A method for producing a composite yarn having a different color pattern in the length direction. The fineness of each of the two or more different colored yarns is 300 to 2200 dTex / line, the total fineness of the two or more different colored yarns is 5000 dTex or less, and the total fineness of the covering yarn is 30 to 50 dTex / The manufacturing method of the composite yarn of Claim 7 which is (1-10f). Including two different colored yarn cross-sections, the two different colored yarn cross-sections being introduced into the yarn introduction port via the guide member so as to form two sides of the triangle at opposite side edges. The method for producing a composite yarn according to claim 7 . 8. The method according to claim 7 , further comprising introducing three or more different colored yarns in parallel to each other in a polygonal shape through the guide member when the number of different colored yarns is three or more. A method for producing a composite yarn. At least one of the two or more different colored yarns is made of a spun yarn, the other different colored yarn is made of a synthetic resin multifilament yarn, and the covering yarn is a colorless and transparent monofilament yarn or multifilament yarn The manufacturing method of the composite yarn of Claim 7 which consists of these. The number of twists of the different colored yarns other than the spun yarn when introduced into the yarn introduction port of the hollow spindle is 0 to 10 T / m, and the covering yarn for the same colored yarn including the spun yarn The method for producing a composite yarn according to claim 11 , wherein the number of windings is 100 to 300 times / m. A pile fiber product in which the composite yarn according to claim 1 is used as a pile yarn,
When the pile fiber product is viewed from the surface, in the pile row direction obtained by each composite yarn, two or more differently colored yarns in an aligned state have irregular pitches and lengths in the yarn length direction. The torsion is made, and the switching portions of the different colored yarns are clearly displayed in order for each yarn without intermixing, and the irregular pitch and length extending in the pile row direction as a whole. A pile fiber product characterized by having a stripe pattern having

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