Twisted yarn and fabric

Abstract

To provide a twisted yarn with high stability of the imparted function. 【Solution means】The twisted yarn 1 according to the present invention includes an elongated core material 20, a slit 10 having a coat layer formed on at least one surface of a base paper, and an elongated restraining yarn 30 wound around the core material 20 and the slit 10.

Description

Technical Field

[0001] The present invention relates to a twisted yarn, and more particularly to a twisted yarn using paper. The fabric using this twisted yarn will also be mentioned.

Background Art

[0002] A twisted yarn formed using paper (hereinafter sometimes referred to as "paper yarn") is known. Such a paper yarn is generally formed by twisting long and narrow strips of paper.

[0003] There is a desire to impart various functions to paper yarns. In Patent Document 1, in order to suppress yarn breakage during weaving, which is one of the drawbacks of paper yarns, strips cut from thin Japanese paper made from Manila hemp are twisted and then passed through a tank containing molten wax.

[0004] That is, in Patent Document 1, by immersing the paper yarn in molten wax, a wax layer is provided on the surface, and the generation of yarn breakage is suppressed by this wax layer. Thus, not only in the case of paper yarns, but also when imparting a desired function to a yarn, it is widely known to impregnate the yarn with a chemical solution or the like that exhibits the function.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] Depending on the physical properties of the layer formed on the surface of the paper yarn by impregnation, there is a concern that it may crack or, as a result, peel off and fall off due to subsequent transportation, bending, etc. In addition, when multiple functions are imparted by this method, by sequentially impregnating with multiple chemical solutions, the surface layer becomes thick. There is also a concern that this may make the layer more likely to peel off, or reduce the flexibility and handling performance due to a decrease in flexibility.

[0007] In view of the above circumstances, an object of the present invention is to provide a twisted yarn with high stability of the imparted function.

Means for Solving the Problems

[0008] The first aspect of the present invention is An elongated core material and paper One side of the base paper A slit in which a coating layer is directly formed by printing and the coating layer is exposed on one surface, an elongated restraining thread wound around the core material and the slit, and a slit Is a twisted yarn.

[0009] The second aspect of the present invention is a woven fabric formed using the twisted yarn according to the first aspect. This woven fabric is formed with the twisted yarn according to the first aspect as the weft yarn and a yarn containing a modacrylic fiber containing vinyl chloride as the warp yarn.

Effects of the Invention

[0010] According to the present invention, it is possible to provide a twisted yarn with high stability of the imparted function.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Modes for Carrying Out the Invention

[0012] An embodiment of the present invention will be described with reference to FIGS. 1 to 3. The twisted yarn according to this embodiment is formed by twisting at least one core material, at least one paper slit, and at least one holding yarn. Figure 1 shows a schematic diagram of the slit 10. The slit 10 has a configuration in which a coating layer 12 is formed on one surface of the base paper 11. Since the coating layer 12 according to the present embodiment contains a flame retardant, the slit 10 exhibits flame retardancy based on the flame retardant.

[0013] The base paper 11 according to the present embodiment is not limited to general paper using pulp derived from plants, and may be any sheet-like structure formed by a wet papermaking method using fibrous materials. For example, a sheet-like structure formed by a wet papermaking method using fibrous materials made of synthetic resin can also be used as the base paper 11 according to the present embodiment, and those formed by mixing synthetic resin and natural pulp can also be used. Natural pulp is also not limited to virgin pulp, and may include recycled pulp. The thickness of the base paper 11 can be, for example, about 20 to 500 μm.

[0014] The coating layer 12 can be formed by various known coating methods such as die coating, and various known printing methods such as screen printing and gravure printing. As is clear from the above, the coating layer 12 does not need to completely cover one surface of the base paper 11 without gaps with the material constituting the coating layer. For example, a region where a part of the base paper 11 is exposed may exist on one surface side, such as when the coating layer 12 is formed in a stripe shape on one surface of the base paper 11. Even in a mode where the entire base paper 11 is covered macroscopically, but when viewed microscopically, a large number of materials constituting the coating layer are arranged in fine dot shapes. Such a formation mode of the coating layer makes it easy to adjust the degree of the function exhibited by the coating layer by changing the size and density of the dots. On the other hand, it is natural that the coating layer 12 may be formed so as to completely cover one surface of the base paper 11 without gaps. The thickness of the coating layer 12 can be, for example, about 2 to 100 μm in any of the above modes.

[0015] The width of the slit 10 can be about 1 to 50 mm. When the width of the slit 10 is made 15 mm or less, it becomes easy to form a twisted yarn using a plurality of slits 10.

[0016] The core material combined with the slit 10 is not particularly limited as long as it is elongated, but is typically a yarn containing fibers. When using fibers, natural fibers or synthetic fibers can be used. In either case, either single fibers or fibers formed by combining a plurality of strands can be used. A twisted yarn obtained by twisting a plurality of types of fibers can also be used. Examples of natural fibers include cotton, hemp, wool, silk, etc. Examples of the material of synthetic fibers include polyethylene, polypropylene, polyester, nylon, acrylic, vinylon, polyolefin, para-aramid, meta-aramid, polyarylate, polybenzoxazole, and furthermore, modacrylic fibers described later, etc. Furthermore, regenerated fibers such as rayon may be used as the core material. The thickness of the core material can be about 10 to 5500 decitex. In addition to fibers, another slit 10 or a paper slit without a coating layer can also be used as the core material. As the paper used as the core material, the same material as the base paper 11 described above can be used, and the width of the slit can also be made equivalent to that of the slit 10.

[0017] The holding yarn is wound around the core material and the slit and twisted together. As the holding yarn, the same material as the core material can be used, and the thickness can also be made about the same.

[0018] In the twisted yarn according to this embodiment, there is no particular limitation on the method of twisting the core material, the slit 10, and the holding yarn, and a known appropriate method can be adopted. For example, the method of covering yarn described in Japanese Patent No. 6930735 can be exemplified.

[0019] In the twisted yarn according to the present embodiment configured as described above, the coating layer 12 provided in the slit 10 exhibits flame retardancy. Therefore, a fabric produced using this can exhibit sufficient flame retardancy even though it contains a large amount of paper, and thus can be suitably used for applications such as shades installed indoors.

[0020] In the twisted yarn during the production of the twisted yarn according to the present embodiment, when the slit 10 is twisted together, as a result of being irregularly twisted, the coating layer 12 is not only present on the surface of the twisted yarn, but is also appropriately arranged inside. This is a significant difference from the case where a layer exhibiting flame retardancy is formed by impregnation. Due to this difference in configuration, in the twisted yarn according to the present embodiment, even when it is bent or the outer surface is subjected to friction, the coating layer 12 arranged inside is less likely to be affected. As a result, the functions provided by the coating layer 12 can be more stably exhibited. Furthermore, the holding yarn also suitably maintains the close contact state between the core material and the slit.

[0021] In the present embodiment, the functions that can be imparted by the coating layer 12 are not limited to the above-described flame retardancy. Examples of other functions include water repellency, hydrophilicity, toughness (difficult to break), chemical resistance, heat resistance, radio wave resistance, conductivity, light control, weather resistance, stain resistance, sound control, and the like. That is, as long as a material that exhibits the function to be imparted can be prepared, by forming a coating layer 12 containing the material on the base paper 11, almost any function can be easily imparted to the twisted yarn. For example, generally, paper containing a large amount of recycled pulp (for example, 30% by mass or more) has inferior physical properties compared to paper formed only of virgin pulp, and thus it is difficult to use it directly as the base paper 11. However, by providing a coating layer 12 that exhibits a function of improving physical properties such as toughness, it becomes possible to use it as the slit 10. Thereby, the environmental load of the twisted yarn can also be reduced.

[0022] Furthermore, when the material of the base paper 11 is difficult to dye, such as aramid fibers, etc., by providing a coat layer 12 having a desired color (including fluorescence, phosphorescence, etc.), a desired appearance can be imparted to the twisted yarn. In this case, the coat layer 12 imparts to the twisted yarn the function of "realizing an appearance that is difficult to achieve in view of the material of the base paper".

[0023] Two or more coat layers 12 may be provided in one slit. That is, by forming a second coat layer 13 having a different composition from the coat layer 12 on the base paper 11, as in the slit 10A shown in FIG. 2, two types of functions can be imparted to the slit 10 and the twisted yarn formed using the same, and it is also possible to add more coat layers. The second coat layer may be formed on the coat layer 12, or may be formed on the surface on the side where the coat layer 12 is not provided.

[0024] By forming using two or more types of slits 10 provided with different coat layers 12, a plurality of types of functions can also be imparted to the twisted yarn. At this time, if the colors of the coat layers are different in the slits used, when they are twisted together, each coat layer is exposed on the outer surface in an irregular manner, so that it is possible to obtain a twisted yarn having a variety of appearances that are difficult to achieve with ordinary twisted yarns. It is also possible to adopt a configuration that combines a desired function and a desired color.

[0025] Using the twisted yarn according to this embodiment, a woven fabric or a knitted fabric can be formed. When creating a woven fabric with the twisted yarn according to this embodiment, the twisted yarn can be used for either the warp or the weft, or both can be twisted yarns. There are also no particular restrictions on the weaving method, and various known methods such as plain weave, twill weave, and damask weave can be applied. For example, by forming a fabric with the twisted yarn according to the present embodiment as the weft yarn and a modacrylic fiber containing vinyl chloride, which is excellent in flame retardancy, as the warp yarn, it is possible to produce curtains, indoor blinds, etc. that have the flameproof performance specified by the Fire Service Act of Japan even without using paper. This modacrylic fiber also has the advantage that deterioration due to ultraviolet rays is slower compared to aramid fiber, which is also excellent in flame retardancy, and thus is particularly suitable when the fabric is used outdoors or the like.

[0026] When manufacturing the twisted yarn according to the present embodiment, if the width of the slit is large, the slit may be made to enter obliquely with respect to the yarn path of the twisting machine. By doing so, the contact area between the yarn path and the slit becomes small, and it is possible to suppress the breakage of the slit due to frictional resistance. The slit of the present embodiment having a coat layer is harder than paper without a coat layer, so it is difficult for the torque during twisting to be transmitted and uneven twisting is likely to occur. However, when done as described above, the slit that has passed through the yarn path is not arranged parallel to the core material. As a result, as shown in FIG. 3, the twisted yarn 1 is wound around the core material 20 in a helical shape with the slit 10 not being twisted much, and a holding yarn 30 is wound thereon. The core material 20 plays a role of holding the slit 10 so that it does not escape from the holding yarn 30 when the holding yarn 30 is wound around the slit 10. In this structure, since the slit 10 exhibits behavior similar to the curly cord of a desk phone, the twisted yarn 1 is less likely to break with respect to the longitudinal traction force compared to a structure in which a holding yarn is wound around the periphery of a core material and a slit arranged substantially in parallel. Further, when the holding yarn is wound around a slit parallel to the core material, the slit pinched by the holding yarn tends to become hard and rod-shaped. However, in the case of a spiral slit, it does not become rod-shaped and is moderately held so as not to separate from the core material. Therefore, the twisted yarn 1 as a whole becomes soft, and weaving and knitting can be suitably performed while having a coat layer. There is no particular limitation on the degree of winding of the slit. For example, it can be about 2 to 2000 rotations per 1 m of the twisted yarn.

[0027] The twisted yarn according to this embodiment will be further described using examples. The technical scope of the present invention is not limited based only on the specific content of the examples.

[0028] (Example 1) (Preparation of Slits) 40 parts of virgin pulp (N material) 20 parts of recycled pulp 40 parts of Manila hemp pulp The mixture was made into paper using a cylinder paper machine, and paper with a basis weight of 30 g / m 2 was obtained. Using a gravure printing machine, an aqueous phosphorus-based flame retardant was printed on the entire surface of both sides of this paper to form a flame retardant coating layer with a thickness of 5 μm. Using a round blade slitter machine, this paper was cut into a width of 4 mm to produce the slits according to Example 1. (Twisting Process) · Core material: 1 cotton (No. 10) · Three 4-mm slits · Pressing yarn: 1 cotton (No. 10) Using a covering twister (Tri Star manufactured by Nippon Textile Machinery Co., Ltd.), single covering was performed to produce the twisted yarn according to Example 1. (Production of Fabric) The twisted yarn according to Example 1 was used as the weft yarn, and a twisted yarn obtained by twisting a modacrylic fiber containing vinyl chloride and a polyester fiber was used as the warp yarn. By using a loom to weave while twisting the warp yarn and passing the weft yarn through, a fabric with an opening ratio of about 30% could be produced.

[0029] (Example 2) (Preparation of Slits) 49 parts of virgin pulp (N material) 51 parts of recycled pulp The mixture was made into paper using a cylinder paper machine, and paper with a basis weight of 18 g / m 2 was obtained. For this paper, a flame retardant coating layer similar to that in Example 1 was formed. Using a round blade slitter machine, this paper was cut into a width of 1.5 mm to produce the slits according to Example 2. (Twisting process) · One 167 - dtex (150 - denier) polyester filament yarn as the core material · One 1.5 - mm slit · One filament yarn of the same polyester as the core material as the holding yarn Using the same covering twister as in Example 1, single covering was performed to produce the twisted yarn according to Example 2. (Fabric production) The twisted yarn according to Example 2 was knitted on a full - garment flat knitting machine (15 gauge) manufactured by Shima Seiki Mfg. Ltd., and a fabric could be produced without problems. This twisted yarn could also be knitted using a warp knitting machine.

[0030] (Example 3) As the slit, the 4 - mm slit according to Example 1 was used. · One 20 - count modacrylic fiber as the core material · Three 4 - mm slits · One 20 - count modacrylic fiber as the holding yarn Using the same covering twister as in Example 1, single covering was performed to produce the twisted yarn according to Example 3.

[0031] (Example 4) As the slit, the 4 - mm slit according to Example 1 was used. · One 20 - count modacrylic fiber as the core material · Three 4 - mm slits · One filament yarn of the same polyester as in Example 2 as the holding yarn Using the same covering twister as in Example 1, single covering was performed to produce the twisted yarn according to Example 4.

[0032] (Example 5) As the slit, the 4 - mm slit according to Example 1 was used. · Two 20 - count modacrylic fibers as the core material · Three 4 - mm slits · One 20 - count modacrylic fiber (first layer) as the holding yarn · One (1) restraining yarn (second layer), modal fiber (20 count) Using the same covering twisting machine as in Example 1, double covering was performed to produce a twisted yarn according to Example 5.

[0033] (Example 6) (Preparation of Slit) Only recycled pulp was made into paper using a cylinder paper machine to obtain paper of 18 g / m 2 . A flame-retardant coating layer similar to that in Example 1 was formed on this paper. Using a round blade slitter machine, this paper was cut to a width of 1.5 mm to produce a slit according to Example 6. (Twisting Process) · One (1) core material, polyester filament yarn, 167 dtex (150 denier) · One (1) 1.5 mm slit · One (1) restraining yarn, polyester filament yarn identical to the core material Using the same covering twisting machine as in Example 1, single covering was performed to produce a twisted yarn according to Example 6.

[0034] (Example 7) Example 7 is an example in which a layer of a predetermined color is used as the functional layer to achieve a unique color. (Preparation of Slit) 40 parts of virgin pulp (N material) 20 parts of recycled pulp 40 parts of Manila hemp pulp The mixture was made into paper using a cylinder paper machine to obtain paper of 30 g / m 2 . Using a gravure printing machine, a first yellow color layer was formed on the entire one side of this paper, and a second red color layer was formed on the entire other side, both using acrylic ink. Using a round blade slitter machine, this paper was cut to a width of 4 mm to produce a slit according to Example 1. (Twisting Process) · One (1) core material, cotton (10 count) · Three (3) 4 mm slits · Tension thread, cotton (size 10), 1 strand Using the same covering twister as in Example 1, single covering was performed to produce the twisted yarn according to Example 7. (Production of fabric) The twisted yarn according to Example 7 was used as the weft yarn, and a twisted yarn obtained by twisting a modacrylic fiber containing vinyl chloride and a polyester fiber was used as the warp yarn. By using a loom to weave while twisting the warp yarn and passing the weft yarn through, a fabric with an opening ratio of about 30% and a mixture of yellow and red colors was produced. The color pattern of this fabric was difficult to achieve by dyeing the yarn.

[0035] (Example 8) Example 8 is an example in which another functional layer is added to a functional layer of a predetermined color to achieve a unique color. (Preparation of slit) On both sides of the paper provided with the first color layer and the second color layer according to Example 7, a 20 g / m 2 semi-transparent polyester non-woven fabric was coated and laminated using an ethylene vinyl acetate-based adhesive to obtain a paper with the colors of the first color layer and the second color layer lightened. This paper has a color adjustment layer made of a polyester non-woven fabric, which is another functional layer, on the first color layer and the second color layer. Using a round blade slitter machine, this paper was cut into a width of 4 mm to produce the slit according to Example 8. (Twisting process) · Core material, cotton (size 10), 1 strand · 4 mm slits, 3 strands · Tension thread, cotton (size 10), 1 strand Using the same covering twister as in Example 1, single covering was performed to produce the twisted yarn according to Example 8. (Production of fabric) The twisted yarn according to Example 8 was used as the weft yarn, and a twisted yarn obtained by twisting a modacrylic fiber containing vinyl chloride and a polyester fiber was used as the warp yarn. By using a loom to weave while twisting the warp yarn and passing the weft yarn through, a fabric with an opening ratio of about 30% and a mixture of light yellow and red colors was produced. The color pattern of this fabric was impossible to achieve by dyeing the yarn.

[0036] (Example 9) (Preparation of Slits) 49 parts of virgin pulp (N material) 51 parts of recycled pulp were mixed and paper was made using a cylinder paper machine to obtain paper with a basis weight of 30 g / m 2 . For this paper, a flame-retardant coating layer similar to that in Example 1 was formed. Using a round blade slitter machine, this paper was cut into a width of 4 mm to produce the slit according to Example 1. (Twisting Process) · Core material: 1 polyester filament yarn of 167 dtex (150 denier) · Three 4-mm slits · Holding yarn: 1 polyester filament yarn identical to the core material were single-covered using the same covering twister as in Example 9, and the twisted yarn according to Example 9 was successfully produced without problems. When the tensile strength of the yarn according to Example 9 was measured in accordance with JIS P8113:2006, it was 33.5 N. For confirmation, when attempting to produce a fabric similar to that in Example 1 using the twisted yarn according to Example 9, it was confirmed that it could be produced without problems and was sufficiently resistant to weaving using a loom.

[0037] Although one embodiment of the present invention has been described above, the specific configuration is not limited to this embodiment, and modifications and combinations of configurations within the scope not departing from the gist of the present invention are also included.

[0038] For example, in the twisted yarn according to the present invention, there are no particular restrictions on the number of the core material, slits, and holding yarns. Therefore, one or more of these may be used in plural to form a twisted yarn.

Description of Reference Numerals

[0039] 1 Twisted yarn 10, 10A Slit 11 Base paper 12 Coating layer 13 Second coat layer 20 Core material 30 Restraining thread

Claims

1. A thin and long core material, a slit in which a coating layer is directly formed by printing on at least one surface of a base paper made of paper, the coating layer being exposed on one surface; An elongated holding thread wound around the core material and the slit; Equipped with Twisted yarn.

2. The slit wraps around the core. The twisted yarn of claim 1.

3. The coating layer contains a flame retardant. The twisted yarn of claim 1.

4. Further comprising a second coating layer having a different composition from the coating layer; The twisted yarn of claim 1.

5. The base paper contains 30 mass percent or more of recycled pulp. The twisted yarn of claim 1.

6. The twisted yarn according to any one of claims 1 to 5 is used as a weft yarn, The warp yarn is made of a modacrylic fiber containing vinyl chloride. fabric.

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