JP5060505B2 - Twisted yarn, yarn, and production method thereof - Google Patents

Description

  The present invention relates to twisted yarns, yarns, and methods for producing them, and more particularly to twisted yarns, yarns using nonwoven fabrics, and methods for producing them.

  Conventionally, a technique for making a yarn using a nonwoven fabric is known. Patent Document 1 discloses a technique in which a slit yarn having a width of 50 mm is created from a nonwoven fabric created by a needle punch method, and the slit yarn is twisted with a string making machine to form a string. In Patent Document 2, paper is made by a papermaking technique using short fibers, heat-fusible fibers, and a fibrous hot water-soluble binder as essential components. After cutting the paper into a string, the string is twisted to create a fancy yarn. A technique for making (design twisted yarn) is disclosed.

Japanese Patent Laid-Open No. 11-279962 Japanese Patent Laid-Open No. 08-325870

  In general nonwoven fabrics, the fibers are arranged in a random direction and are arranged in a curved shape, and therefore, they cannot effectively resist the tensile force and are easy to stretch. In order to increase the strength against the tensile force, it is necessary to increase the basis weight, but the weight increases accordingly. That is, restraining elongation and weight reduction are difficult problems to achieve.

  This invention is made | formed in view of such a subject, and it aims at providing the twisted yarn and thread | yarn which can make elongation suppression and weight reduction compatible, and these manufacturing methods.

    According to one aspect of the present invention, a twisted yarn in which a belt-like cloth formed by laminating a plurality of twisted fiber array layers is twisted is disclosed. Each fiber array layer is made of a thermoplastic resin and is composed of a plurality of continuous long fibers arrayed substantially linearly in the longitudinal direction of the belt-like cloth.

  According to another aspect of the present invention, a yarn in which a plurality of fiber array layers are laminated is disclosed. Each fiber array layer is made of a thermoplastic resin and is composed of a plurality of continuous long fibers arrayed substantially linearly in the longitudinal direction of the yarn.

  According to one aspect of the present invention, a twisted yarn is disclosed in which a belt-like cloth having a plurality of first fiber array layers and a plurality of second fiber array layers stacked alternately is twisted. The first fiber array layer is formed of a plurality of continuous long fibers formed from a thermoplastic resin and arranged substantially linearly in the longitudinal direction of the belt-like cloth, and the second fiber array layer is formed of a thermoplastic resin and has a continuous length. It consists of a plurality of fibers arranged substantially linearly in a direction intersecting with the fibers.

  According to another aspect of the present invention, a yarn comprising a plurality of first fiber array layers and a plurality of second fiber array layers stacked alternately is disclosed. The first fiber array layer is formed of a plurality of continuous long fibers formed from a thermoplastic resin and arranged substantially linearly in the longitudinal direction of the yarn, and the second fiber array layer is formed of a thermoplastic resin and is formed of continuous long fibers. It consists of a plurality of fibers arranged in a substantially straight line in the direction intersecting with.

  According to one aspect of the present invention, a method for producing a twisted yarn includes a fiber array layer composed of a plurality of continuous long fibers formed from a thermoplastic resin and arranged substantially linearly in one direction. Creating a base fabric by laminating the fiber array layers so as to match each other, cutting the base fabric into strips along the continuous long fibers to form a strip fabric, and twisting the strip fabric to twist And having

  According to another aspect of the present invention, there is provided a yarn production method comprising: arranging a fiber arrangement layer composed of a plurality of continuous long fibers formed of a thermoplastic resin and arranged substantially linearly in one direction; Are laminated so that the fiber array layers coincide with each other to form a base fabric, and the base fabric is cut into a thread shape along the continuous long fibers.

  According to another aspect of the present invention, a method for producing a twisted yarn includes a first fiber array layer made of a plurality of first continuous long fibers formed from a thermoplastic resin and arranged substantially linearly in one direction; A base fabric is formed by alternately laminating a second fiber array layer composed of a plurality of second continuous long fibers formed of a thermoplastic resin and arranged substantially linearly in a direction intersecting the first continuous long fibers. Creating a band-like cloth by cutting the base fabric along the first continuous long fibers to form a belt-like cloth, and twisting the belt-like cloth to make a twisted yarn.

  According to another aspect of the present invention, a first fiber array layer formed of a plurality of first continuous long fibers formed from a thermoplastic resin and arranged substantially linearly in one direction is formed from the thermoplastic resin. Creating a base fabric by alternately laminating a second fiber array layer composed of a plurality of second continuous long fibers arranged substantially linearly in a direction intersecting with the first continuous long fibers; Cutting the fabric into yarns along the first continuous long fibers to form yarns.

  As described above, each embodiment of the present invention includes a plurality of continuous long fibers formed from a thermoplastic resin and arranged in a substantially straight line in one direction. For this reason, the continuous long fiber can effectively resist the tensile force received from the arrangement direction of the fibers. Also, from this configuration, the amount of fibers can be reduced to obtain the same strength. Thus, the twisted yarn and yarn according to each embodiment of the present invention can achieve both suppression of elongation and weight reduction.

  ADVANTAGE OF THE INVENTION According to this invention, the twisted yarn and thread | yarn which can make elongation suppression and weight reduction compatible, and these manufacturing methods can be provided.

It is an outline drawing of a twisted yarn and yarn concerning some embodiments of the present invention. It is a partial detailed view of the twisted yarn and the yarn according to the first embodiment. It is the schematic which shows the manufacturing method of the twisted yarn and yarn shown in FIG. It is the partial detailed view of the twisted yarn and yarn which concern on 2nd Embodiment. It is the schematic which shows the manufacturing method of the twisted yarn and yarn shown in FIG. It is the schematic of the manufacturing apparatus used for preparation of a base fabric.

  FIG. 1 is a schematic view showing several embodiments of the twisted yarn and yarn of the present invention. In each figure of FIG. 1, the thick line represents the outline of the fiber array layer or the base fabric, and the thin line schematically represents the continuous long fiber or fiber. Hereinafter, several embodiments of the twisted yarn and yarn of the present invention will be described with reference to FIG. 1 and related drawings.

(First embodiment)
Referring to FIG. 1 (a), a twisted yarn 1 according to a first embodiment of the present invention is shown. The twisted yarn 1 is formed by twisting a belt-like cloth 4 in which a plurality of fiber array layers are laminated. FIG. 2 is a schematic partial perspective view showing a part of the belt-like cloth 4 in an enlarged manner. In the figure, the belt-like cloth 4 is composed of the fiber array layers 12A and 12B, but the belt-like cloth 4 may be composed of three or more fiber array layers.

  The fiber array layer 12A is an aggregate of a large number of continuous long fibers 13A arranged linearly in one direction in parallel with each other. Similarly, the fiber array layer 12B is an aggregate of a large number of continuous long fibers 13B aligned in a straight line in one direction in parallel with each other. The continuous long fibers 13A and 13B may be folded in the middle or may be laminated two or more layers. The fiber arrangement layers 12A and 12B are laminated so that the arrangement direction of the continuous long fibers 13A and the arrangement direction of the continuous long fibers 13B coincide with the longitudinal direction L of the belt-like cloth 4 (see FIG. 3B).

  The fiber array layer 12A can be made from thermoplastic resins such as polyethylene terephthalate, polyethylene, polypropylene, polyester, polyamide, polyvinyl chloride resin, polyurethane, fluorine resin, and modified resins thereof. As an additive to the thermoplastic resin, an ultraviolet ray inhibitor, an oxidative degradation inhibitor, a flame retardant, and the like can be added according to the use of twisted yarn or yarn (described later). Resins by wet or dry spinning means such as polyvinyl alcohol resins and polyacrylonitrile resins can also be used. The same applies to the fiber array layer 12B. The diameter of each continuous long fiber 13A, 13B is preferably in the range of 1 to 20 μm, and in one embodiment is about 10 μm.

  The twisted yarn 1 can be manufactured by the following procedure. First, as shown in FIG. 3A, the above-described fiber arrangement layers 12A and 12B are laminated so that the arrangement directions of the continuous long fibers 13A and 13B coincide with each other in the fiber arrangement layers 12A and 12B. Nonwoven fabric) 3 is prepared. The figure shows a top view of the base fabric 3, and only the upper fiber array layer 12B is visible. In addition to the continuous fibers 13B (solid line) of the fiber array layer 12B, the continuous length of the fiber array layer 12A is shown. The fiber 13A is also indicated by a broken line. This process will be described in detail later, but the important thing is to blow heated air on the fibers that are continuously formed by being ejected from the nozzles, and align the fibers in the longitudinal direction (the direction of travel of the conveyor). The fibers are accumulated and then the accumulated fibers are stretched in the machine direction. Thereby, it is possible to form a fiber arrangement layer in which fibers are arranged neatly in one direction.

The base fabric 3 can also use a commercially available non-woven fabric. As an example, Milife (registered trademark) grade T05 (weight per unit area: 5 g / m ² ), grade T10 (weight per unit area: 10 g / m ² ), grade T15 (weight per unit area: 15 g / m ² ), grade T20 (weight per unit area) manufactured and sold by the applicant of the present application 20 g / m ² ). The practical basis weight range of the base fabric as a twisted yarn material is 3 to 60 g / m ² , and it goes without saying that the base fabric is not limited to these products.

  Next, as shown in FIG. 3B, the base fabric 3 is cut into a strip shape along the continuous long fibers 13 </ b> A and 13 </ b> B (along the line XX ′) to make a strip fabric 4. Then, the twisted yarn 1 is created by twisting the belt-like cloth 4. A conventional general twisting machine can be used for the final twisting process. In one Example, the width | variety of the strip | belt-shaped cloth was 2-3 cm, and the diameter of the twisted yarn 1 which twisted this was about 2-3 mm.

The twisted yarn of this embodiment has the following advantages.
(1) Since a general nonwoven fabric has fibers arranged in a random direction and is arranged in a curved line, it has a property that it cannot effectively resist a tensile force and is easy to stretch. On the other hand, a structure in which such fibers are arranged in a random direction is advantageous from the viewpoint of securing bulkiness. In particular, a twisted yarn subjected to false twisting is easy to ensure bulkiness and is also called bulky processed yarn. However, the bulkiness and the stretchability are generally correlated, and the conventional technique has a problem that the bulkiness must be sacrificed if the stretchability is to be suppressed. In order to cope with this problem, it is conceivable to use a push-in type processing thread, but since a gear clamping process is required, productivity is poor. On the other hand, in the twisted yarn of this embodiment, since the continuous long fiber is in a drawn state, it is difficult for elongation to occur. In addition, in this embodiment, since the belt-like cloth obtained by cutting from the fabric, that is, the base cloth is twisted, the inner side of the twisted yarn tends to be hollow due to the deformation resistance of the belt-like cloth at the time of twisting, and a bulky twisted yarn is easy. Can be manufactured. That is, according to this embodiment, it is possible to achieve both suppression of elongation and bulkiness.
(2) Generally, in the case of bundling synthetic long fiber raw yarns (namely, unprocessed yarns) to make yarns or twisted yarns, a considerable number of single yarns are required, resulting in heavy yarns. On the other hand, in this embodiment, the inner side of the twisted yarn tends to be hollow for the reasons described above, and a lightweight and bulky twisted yarn can be easily manufactured. That is, the twisted yarn of this embodiment can achieve both weight reduction and apparent volume. Further, since the inside of the twisted yarn becomes hollow, the hollow space inside becomes an air layer, which is useful for improving heat retention.
(3) Moreover, the twisted yarn 1 manufactured in this way has a large tensile strength (more accurately, a tensile strength per unit weight) in the fiber arrangement direction. When compared with the strength of the base fabric (nonwoven fabric), the tensile strength based on JIS L-1096 is 140 [N / 50 mm] in the case of the above-mentioned Milife grade T20 (weight per unit area: 20 g / m ² ). In this case, in the example of the same basis weight, it is about 65 [N / 50 mm]. That is, the twisted yarn of this embodiment is also suitable for making a textile product that requires high tensile strength.
(4) Although the continuous long fibers are thermally welded to each other in the state of the base fabric, when the base fabric is cut along the continuous long fibers, the cutting mainly occurs at the heat welded portion having a low cutting resistance. For this reason, the cut location and cut area of the fiber itself become extremely small, and fraying hardly occurs. Further, since it is made of long fibers, it is difficult for fuzz to occur. Therefore, the twisted yarn of this embodiment is excellent in touch feeling.
(5) Since the nonwoven fabric used for manufacturing the twisted yarn of this embodiment is extremely thin, twisted yarns of various thicknesses can be made depending on the twisted yarn conditions.
(6) Since the twisted yarn of this embodiment is made of a thermoplastic resin such as polyester, it is superior in heat resistance and strength as compared to paper yarn.

  Although not shown in the drawings, the twisting mode is not limited to the above-described mode. For example, any known mode such as two-twisting (twisted yarn), three-twisting (triple yarn), various twisted yarns, and fancy yarn can be implemented. It is.

  Although the above embodiment is a twisted yarn obtained by twisting a yarn, twisting can be omitted. Referring to FIG. 1 (b), a yarn according to such a modification is shown. The yarn is formed by laminating a plurality of fiber array layers 12A and 12B. Each of the fiber array layers 12A and 12B is made of continuous long fibers 13A and 13B formed from a thermoplastic resin and arranged in a straight line in the direction of the yarn, and the fiber array layers are arranged so that the array direction of the continuous long fibers 13A and 13B is each fiber. The alignment layers 12A and 12B are stacked so as to coincide with each other. In short, this modification is obtained by omitting the twisting in the first embodiment and cutting the base fabric into a thread shape at the time of production. By omitting the twist, the elongation can be further suppressed, and therefore, it can be suitably applied to an application in which elongation deformation should be particularly prevented. That is, in the present modified embodiment, the above-described advantage (1) becomes more remarkable. Moreover, since the base fabric itself is thin and difficult to stretch, even if it is used as it is, it is possible to achieve both weight reduction and suppression of elongation.

(Second Embodiment)
Referring to FIG. 1 (c), a twisted yarn 1 ′ according to a second embodiment of the present invention is shown. The twisted yarn 1 ′ is formed by twisting a belt-like cloth 4 ′ formed by laminating a plurality of fiber arrangement layers. FIG. 4 is a schematic partial perspective view showing an enlarged part of such a belt-like cloth 4 ′. In the figure, the belt-like cloth 4 ′ is composed of the fiber array layers 12C and 12D, but the belt-like cloth 4 ′ may be composed of three or more fiber array layers.

  Unlike the first embodiment, the belt-like cloth 4 ′ includes first fiber array layers 12 </ b> C and second fiber array layers 12 </ b> D that are alternately stacked.

  The first fiber array layer 12C and the second fiber array layer 12D have the same configuration as the fiber array layers 12A and 12B of the first embodiment, but the fibers 13D of the second fiber array layer 12D are They are arranged in a substantially straight line in the direction intersecting with the continuous long fibers 13C of the first fiber arrangement layer 12C. In the present embodiment, the continuous long fibers 13C and the fibers 13D are orthogonal to each other, but this is not always necessary.

The twisted yarn 1 ′ can be produced by the following procedure. First, as shown in FIG. 5A, the above-described fiber arrangement layers 12C and 12D are laminated so that the arrangement directions of the continuous long fibers 13C and 13D ′ are orthogonal to each other to form a base fabric 3 ′ (nonwoven fabric). . The manufacturing method of the base fabric 3 ′ is the same as that of the first embodiment except that the fiber array layers are orthogonal. Next, as shown in FIG. 5 (b), the base fabric 3 ′ is cut into a strip shape along the continuous long fibers 13C (in the XX ′ direction) to form a strip fabric 4 ′. As shown in c), the belt-like cloth 4 'is twisted to make a twisted yarn 1'. As non-woven fabrics that can be used as the base fabric 3 ', Milife's grade TY0505FE (weight 10 g / m ² ), grade TY1010FE (weight 20 g / m ² ), grade TY1515FE (weight 30 g / m ² ), grade TY2020FE (weight 40 g / m) ² ), but the practical basis weight range of the base fabric is 3 to 60 g / m ^2, but is not limited thereto. Various forms of twisting are possible as in the first embodiment.

  Although the above embodiment is a twisted yarn 1 ′ obtained by twisting a yarn, in this embodiment, twisting can be omitted as in the first embodiment. Referring to FIG. 1 (d), a yarn 11 'according to such a modification is shown. The yarn 11 ′ includes a plurality of first fiber array layers and a plurality of second fiber array layers that are alternately stacked. The first fiber array layer 12C is composed of a plurality of continuous long fibers 13C formed of a thermoplastic resin and arranged in a substantially linear shape in the longitudinal direction L of the base fabric (see FIG. 5B). The second fiber array layer 12D is made of a thermoplastic resin and is composed of second fibers 13D that are arranged substantially linearly in a direction crossing the first fibers 12C. In short, the present modified embodiment is similar to the above-described modified example, in which twisting is omitted in the second embodiment, and the base fabric is cut into a thread shape at the time of creation. By omitting the twist, the elongation can be further suppressed, so that it can be suitably applied to applications where elongation deformation is not particularly preferred. Further, since the continuous long fibers 13C are arranged substantially linearly in the longitudinal direction L, it is possible to effectively resist the tensile force received from the arrangement direction L of the fibers. For this reason, in order to obtain the same intensity | strength, the quantity of a fiber can be reduced and weight reduction is possible.

  The present embodiment is also suitable for making a textile product that is suppressed in elongation and has an apparent volume feeling for the same reason as in the first embodiment. In particular, the present embodiment includes fibers in two directions orthogonal to each other, and has a feature that it is easy to gain bulk due to the presence of the fibers 13D arranged in a direction orthogonal to the cutting direction X-X '. Unlike the first embodiment, the continuous long fiber 13D ′ is cut into the fiber 13D, which provides a spun-like (short fiber) appearance and texture, and can be suitably applied to uses such as clothes. In some cases. In addition, in this embodiment, since the fiber 13D with a small contribution to the tensile strength is included, the above-described advantages (3) and (4) cannot be obtained, but other advantages can be obtained similarly.

  Next, a method for manufacturing the base fabrics 3, 3 'will be described. FIG. 6 shows a schematic view of a manufacturing apparatus used for creating a base fabric. The fiber array layer (nonwoven fabric) manufacturing apparatus 21 includes a spinning unit 22 mainly composed of a melt blown rice 24 and a conveyor 25, a stretching unit 23 composed of stretching cylinders 26a and 26b, take-up nip rollers 27a and 27b, and the like. have. The melt blown rice 24 has a large number of nozzles 28 arranged at the tip (lower end) in a direction perpendicular to the paper surface (only one is shown in the figure). A large number of fibers 31 are formed by the molten resin 30 fed from a gear pump (not shown) being extruded from the nozzle 28. Air reservoirs 32a and 32b are provided on both sides of each nozzle 28, respectively. High-pressure heated air heated to a temperature equal to or higher than the melting point of the resin is fed into the air reservoirs 32a and 32b, and is ejected from slits 33a and 33b communicating with the air reservoirs 32a and 32b and opening at the tip of the melt blown die 24. As a result, a high-speed air flow substantially parallel to the extrusion direction of the fibers 31 extruded from the nozzle 28 is generated. The fiber 31 extruded from the nozzle 28 is maintained in a meltable state that can be drafted by the high-speed airflow, and the fiber 31 is drafted by the frictional force of the high-speed airflow, thereby reducing the diameter of the fiber 31. The temperature of the high-speed airflow is set to 80 ° C. or higher, desirably 120 ° C. or higher, than the spinning temperature of the fiber 31. In the method of forming the fiber 31 using the melt blown rice 24, the temperature of the fiber 31 immediately after being extruded from the nozzle 28 can be made sufficiently higher than the melting point of the fiber 31 by increasing the temperature of the high-speed airflow. Therefore, the molecular orientation of the fiber 31 can be reduced. When producing a continuous fiber of polyethylene terephthalate resin, it can be thinned to a diameter of 10 to 23 μm by hot air when melt-extruding.

  A conveyor 25 is disposed below the melt blown rice 24. The conveyor 25 is wound around a conveyor roller 29 and other rollers that are rotated by a driving source (not shown), and the conveyor 25 is driven by the rotation of the conveyor roller 29, so that the fibers extruded from the nozzles 28. 31 is conveyed rightward in the drawing.

  The fiber 31 flows along a high-speed airflow that is a flow in which high-pressure heated air ejected from the slits 33a and 33b on both sides of the nozzle 28 is merged. The high-speed air current flows in a direction substantially perpendicular to the conveying surface of the conveyor 25 by the high-pressure heated air ejected from the slits 33a and 33b.

  A spray nozzle 35 is provided between the melt blown rice 24 and the conveyor 25. The spray nozzle 35 sprays mist-like water into a high-speed air stream, whereby the fibers 31 are cooled and rapidly solidified. Although a plurality of spray nozzles 35b are actually installed, only one is shown in FIG. The fluid ejected from the spray nozzle 35 is not necessarily required to contain moisture or the like as long as the fiber 31 can be cooled, and may be cold air.

  An elliptical airflow vibration mechanism 34 is provided in a region near the melt blown rice 24 where high-speed airflow is generated by the slits 33a and 33b. The airflow vibration mechanism 34 rotates in the direction of the arrow A around an axis 34a that is substantially orthogonal to the conveyance direction D of the fibers 31 on the conveyor 25, that is, substantially parallel to the width direction of the fiber array layer to be manufactured. Be made. In general, when a wall exists in the vicinity of a high-speed jet of gas or liquid, the jet tends to flow near the direction along the wall surface, which is called the Coanda effect. The airflow vibration mechanism 34 changes the flow direction of the fibers 31 using this Coanda effect. In the case of FIG. 6, when the elliptical long axis of the airflow vibration mechanism 34 coincides with the direction of the high-speed airflow (vertical direction in the drawing), the fibers 31 fall almost vertically toward the conveyor 25. When the airflow vibration mechanism 34 rotates 90 degrees around the axis 34a and the elliptical long axis of the airflow vibration mechanism 34 is orthogonal to the direction of the high-speed airflow, the fibers 31 are in the transport direction D (right side in the figure) of the conveyor 25. At this time, the displacement is maximized. When the airflow vibration mechanism 34 further rotates around the shaft 34a, the position where the fibers 31 drop onto the conveyor 25 periodically moves in the front-rear direction with respect to the transport direction D. In other words, the solidified fibers 31 are accumulated on the conveyor 25 while being swung in the vertical direction, and are partially folded in the vertical direction and continuously collected to form continuous long fibers.

  The fibers 31 collected on the conveyor 25 are transported in the transport direction D by the conveyor 25 and nipped between the stretching cylinder 26a and the pressing roller 36 heated to the stretching temperature. Thereafter, the fiber 31 is nipped between the stretching cylinder 26b and the pressing rubber roller 37 and is brought into close contact with the two stretching cylinders 26a and 26b. In this way, the fibers 31 are sent while being in close contact with the drawing cylinders 26a and 26b, so that the fibers 31 become a web in which the adjacent fibers 31 are fused together while being partially folded in the vertical direction. At this time, it is preferable to make the distance between the two extending cylinders 26a and 26b as small as possible. This is called proximity stretching. Since the fibers 31 may be folded back or bent slightly, it is preferable to shorten the distance between the starting point and the ending point as much as possible in order to effectively stretch the individual fibers 31.

  A web is obtained by being sent in close contact with the stretching cylinders 26a and 26b. The web is further taken up by take-up nip rollers 27a and 27b (the take-up nip roller 27b in the subsequent stage is made of rubber). The peripheral speed of the take-up nip rollers 27 a and 27 b is larger than the peripheral speed of the stretching cylinders 26 a and 26 b, whereby the web is stretched in the longitudinal direction and becomes the longitudinally stretched fiber array layer 38. Thus, the degree of fiber alignment can be further improved by stretching the spun web in the machine direction. When creating a continuous fiber of polyethylene terephthalate resin, the fiber diameter is reduced to about 1 to 20 μm by stretching the fiber to a length of 3 to 10 times, and the degree of fiber alignment is increased by this stretching operation. Is possible. When the fiber 31 is sufficiently quenched, the fiber 31 having a small stretching stress and a high elongation is formed. This is realized by spraying mist-like water from the spray nozzle 35 as described above and including the mist-like liquid in the high-speed airflow. In the fiber array layer formed by the method described above, continuous long fibers are arrayed substantially linearly in one direction.

  The fiber array layers thus manufactured are sequentially laminated so that the fiber directions coincide with each other. Thereafter, the fiber array layer is bonded by applying a temperature not higher than the melting point of the material resin. Thereby, the base fabric 3 described above is completed. Further, the base fabric 3 'described above is completed by sequentially laminating the fibers so that the directions of the fibers are orthogonal to each other, and then executing the same process.

1,1 'twist 3,3' non-woven fabric
4,4 'belt-like cloth 12A-12D fiber arrangement layer 13A-13C continuous long fiber 13D fiber 24 meltblown rice 28 nozzle 31 fiber D heat insulation direction

Claims (8)

  A twisted yarn obtained by twisting a belt-like cloth in which a plurality of fiber arrangement layers are laminated, wherein each fiber arrangement layer is formed of a thermoplastic resin and is arranged in a plurality of continuous lengths in a substantially straight line in the longitudinal direction of the belt-like cloth. A twisted yarn made of fiber.   A yarn obtained by laminating a plurality of fiber arrangement layers, wherein each fiber arrangement layer is made of a thermoplastic resin and is made of a plurality of continuous long fibers arranged substantially linearly in the longitudinal direction of the yarn. A twisted yarn in which a belt-like cloth provided with a plurality of first fiber array layers and a plurality of second fiber array layers stacked alternately is twisted,
The first fiber array layer is formed of a plurality of continuous long fibers formed from a thermoplastic resin and arranged in a substantially straight line in the longitudinal direction of the belt-like cloth,
The second fiber array layer is a twisted yarn formed of a thermoplastic resin and composed of a plurality of fibers arranged in a substantially straight line in a direction intersecting with the continuous long fibers. A plurality of first fiber array layers and a plurality of second fiber array layers stacked alternately,
The first fiber array layer is formed of a plurality of continuous long fibers formed from a thermoplastic resin and arranged substantially linearly in the longitudinal direction of the yarn,
The second fiber array layer is a yarn formed of a plurality of fibers formed from a thermoplastic resin and arranged substantially linearly in a direction intersecting the continuous long fibers. A base fabric formed by laminating a fiber array layer composed of a plurality of continuous long fibers formed of a thermoplastic resin and arranged substantially linearly in one direction so that the alignment directions of the continuous long fibers coincide with each other. Creating
Cutting the base fabric into strips along the continuous long fibers to form strip strips;
Twisting the belt-like cloth to make a twisted yarn;
A method for producing a twisted yarn. A base fabric formed by laminating a fiber array layer composed of a plurality of continuous long fibers formed of a thermoplastic resin and arranged substantially linearly in one direction so that the alignment directions of the continuous long fibers coincide with each other. Creating
Cutting the base fabric into yarns along the continuous long fibers;
A method for producing a yarn, comprising: A first fiber array layer made of a plurality of first continuous long fibers formed from a thermoplastic resin and arranged substantially linearly in one direction, and a direction formed from a thermoplastic resin and intersecting the first continuous long fibers Forming a base fabric by alternately laminating a plurality of second fiber arrangement layers composed of a plurality of second continuous long fibers arranged in a substantially straight line;
Cutting the base fabric into strips along the first continuous long fibers to form a strip of fabric;
Twisting the belt-like cloth to make a twisted yarn;
A method for producing a twisted yarn. A first fiber array layer made of a plurality of first continuous long fibers formed from a thermoplastic resin and arranged substantially linearly in one direction, and a direction formed from a thermoplastic resin and intersecting the first continuous long fibers Forming a base fabric by alternately laminating a plurality of second fiber arrangement layers composed of a plurality of second continuous long fibers arranged in a substantially straight line;
Cutting the base fabric into a thread shape along the first continuous long fibers to form a thread;
A method for producing a yarn, comprising:

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