Strip-shaped tape, its paper yarn twist, and fabric using it

Abstract

To provide a belt-like tape formed by making raw material fibers, specially, plant fibers, subjected to papermaking with a certain width and firmly entangled with a core yarn without damaging original characteristics of the plant fibers, and also to provide a twisted paper yarn that is made by twisting the belt-like tape and has adequate hardness while having flexibility, is light in weight, and excellent in air permeability, moisture absorbing and desorbing property, and skin touch feeling by being repeatedly twisted as necessary.SOLUTION: A belt-like tape 2 is a non-twisted yarn made by making raw material fibers for papermaking subjected to papermaking and entangled with a tensioned core yarn near a center. The raw material fibers for papermaking are entangled with the core yarn while being spaced away by average 200 μm or less in the belt-like tape 2. A twisted paper yarn 10 is formed by twisting the belt-like tape 2.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a strip tape which is paper made containing a core yarn, a twisted paper yarn made by twisting the strip tape, and a fabric woven, knitted or intertwined with the twisted paper yarn, as well as a manufacturing device for a strip tape made by filtering papermaking raw material that has been beaten and / or opened together with the core yarn and a manufacturing method for a strip tape using the same, and a twisted paper yarn manufacturing device that twists the strip tape and a manufacturing method for twisted paper yarn using the same. [Background technology]

[0002] Paper is generally a sheet-like product made by defibrating plant fibers, tightly intertwining them in water, filtering them, rolling them out into a thin, flat surface, and drying them.It is used for a variety of purposes, including books, paperboard boxes, and toilet paper.

[0003] Paper is broadly classified into Japanese paper and Western paper depending on the raw material. Washi is paper made using traditional Japanese techniques, using materials such as kozo (paper mulberry), mitsumata (mitsumata), and gampi (gampi) as raw materials. The bark is stripped from these logs, the black outer layer of the bark is scraped off to leave the white bark, which is then boiled in alkaline lye or soda ash to dissolve impurities other than the fiber, washed with water to remove scars and bud marks, and defibrated. The paper is then mixed with neri, a mucus extracted from the tororo-aoi plant in ancient times, or more recently with a chemical thickener such as polyacrylamide, and strained on a sieve or screen to make paper, which is then dehydrated by pressing and dried. Recently, Manila hemp has also become a raw material. On the other hand, Western paper is made by dissolving lignin from wood, mainly conifers, to produce mechanical or chemical pulp, which is then beaten and / or defibrated, filtered through a mesh called a wire, and then dehydrated and dried.

[0004] One of the most well-known paper-based applications is paper yarn twists, also known as spun yarn. Because paper yarn twists have a texture similar to linen yarn, they are woven or knitted into a variety of fabrics, such as imitation linen fabrics, various summer clothing fabrics and obi fabrics, rugs and towels, and decorative materials.

[0005] Paper thread is made from paper, especially washi paper, which is generally cut into tapes 2 to 5 mm wide and then twisted appropriately to form threads. Paper thread made from washi paper is unique to Japan, a country that produces washi paper.

[0006] As an example of paper yarn, Patent Document 1 discloses a paper yarn formed by spirally loosely twisting a water-resistant pulp tape into a string shape, and Patent Document 2 discloses a paper yarn formed by spirally loosely twisting a paper tape having a fold along the longitudinal direction into a string shape. These paper threads are simply twisted tapes, so even if the tape is thin, it needs to be made from strong washi paper to maintain its strength as a thread. On the other hand, if the paper thread is twisted from washi tape containing sufficiently strong mulberry, mitsumata, gampi, or Manila hemp fibers, the paper thread itself tends to be stiff and not flexible enough to be used as a thread for clothing. Furthermore, when cutting the paper raw material into tape, cut surfaces and edges are generated on the long sides of the fiber tape, creating sharp corners, which reduces the soft feel and makes the paper uncomfortable due to irritation and hardness.In addition, it requires complicated processes such as preparing the paper, slitting it into tape, twisting the yarn, and winding the twisted paper yarn onto a winding drum using a winding machine, which makes the process tedious and troublesome.

[0007] Another known paper yarn is one made by twisting a paper tape, such as Japanese paper, around a core thread, such as cotton. For example, Patent Document 3 discloses a composite paper yarn in which a fiber bundle is formed by false-twisting a paper tape and one or more types of first long fibers attached to the paper tape, and then covering the fiber bundle with a second long fiber. This paper yarn has the same disadvantages as the paper yarn described above because it is cut into tape. Furthermore, because the tape is twisted with fibers that are much thinner than the tape, it is difficult to maintain a constant relative distance between the tape and the fibers, which is a disadvantage that unevenness is likely to occur.

[0008] Another type of paper yarn is known, in which fibers are twisted around a core yarn such as cotton yarn. For example, Patent Document 4, as claimed in claim 1, describes a method for manufacturing a fiber yarn, including a thread-feeding step of supplying a thread material, consisting of a mixture of water and fibers, in a linear or belt-like form onto a rotating knitted tape belt; a moisture removal step of removing moisture from the linear or belt-like thread material supplied onto the knitted tape belt; a fiber entanglement step of bending the knitted tape belt so that both ends are alternately positioned above the portion of the thread material from which the moisture has been removed after the moisture removal step and moving it up and down to entangle the fibers into a thin thread; a yarn twisting step of twisting the thin thread separated from the knitted tape belt after the fiber entanglement step; and a drying step before and after the yarn twisting step. Claim 4 of the patent also includes a fiber entanglement step of entanglement of the fibers of the thread material with the core yarn to form a thin thread. However, although this method produces a texture similar to that of Japanese paper, it is simply made by filtering the material like Japanese paper, or at most by covering the core thread with thread material (fiber material) and then rolling or bundling it together, making it difficult to make it dense, and the gaps between the core thread and the surrounding thread material become large, resulting in a lack of a sense of unity and a lack of softness, and in addition, there is little fiber entanglement, making it lack the performance of a thread like cotton thread or raw silk.

[0009] In order to be used in knitted and woven fabrics that are breathable, moisture absorbing and releasing, and have a pleasant feel against the skin in sportswear, underwear, and other daily necessities, there has been a demand for the raw material, twisted paper yarn, especially paper yarn made from washi paper, to have sufficient properties such as these. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Japanese Patent Application Publication No. 08-060473 [Patent Document 2] Japanese Patent Application Laid-Open No. 2001-200441 [Patent Document 3] Patent Publication No. 2021-155902 [Patent Document 4] Japanese Patent Application Laid-Open No. 2007-39863 Summary of the Invention [Problem to be solved by the invention]

[0011] The present invention has been made to solve the above-mentioned problems, and aims to provide a strip-shaped tape made by tightly intertwining raw fiber for papermaking, especially plant fiber, with a core thread of a certain width without losing the inherent characteristics of the plant fiber, a twisted paper yarn product which is made by twisting the strip-shaped tape, and twisting it repeatedly as necessary, so that it has flexibility while also having a moderate hardness, is light, breathable, has good moisture absorption and release properties, and feels good against the skin, and a fabric made from the same which can be widely used for clothing such as sportswear and underwear, footwear such as shoes, or daily necessities such as rugs and towels, as well as a method and apparatus for manufacturing twisted paper yarn which can be produced simply and easily while improving the efficiency of the production process of twisted paper yarn. [Means for solving the problem]

[0012] The strip tape made to achieve the above object is: Naturally derived or recycled fibers Raw fiber for papermaking (However, animal fibers are excluded and only plant fibers are included.) The raw material fiber for papermaking is placed on the tensed core thread near the center. together Tangled The long edge is not cut off. It is a non-twisted yarn A paper-made belt-shaped tape, The thickness is 10 to 100 μm, and the shortest distance between adjacent fibers at any one of the papermaking raw material fiber locations is defined as the inter-fiber distance, and the average of the inter-fiber distances at multiple locations is an average of 200 μm or less around the core yarn, with the maximum gap being 450 μm. The papermaking raw material fibers are entangled, and the core yarn is arranged in the middle or center in the thickness direction. Characterized by A paper-made belt-shaped tape for paper yarn twisting for textile applications. .

[0013] In this belt-shaped tape, the raw papermaking fibers are entangled with the core yarn with an average gap of 200 μm or less.

[0014] The twisted paper yarn product made to achieve the above object is characterized in that the strip-shaped tape is twisted.

[0015] It is preferable that the long side edges of the belt-shaped tape of this twisted paper yarn are left as they are after being made and are not cut off.

[0016] This twisted paper yarn product may have, for example, the core yarn: Fibers derived from natural sources, synthetic fibers derived from chemical synthesis, fibers derived from recycled materials, or fibers derived from biomaterials, At least one synthetic fiber selected from polyester, polyamide (nylon, polyparaphenylene terephthalamide: registered trademark "Kevlar"), polyacrylate, polyacrylonitrile, vinylon (polyvinyl alcohol), polyolefin (polyethylene, polypropylene), polyvinyl chloride, polyvinylidene chloride, and polyurethane; made of at least one semi-synthetic fiber selected from acetate, triacetate, and promix; Made from at least one chemical fiber and / or regenerated fiber selected from viscose rayon (also simply called rayon), cuprammonium rayon (cupra, registered trademark "Bemberg"), polynosic, lyocell (brand name "Tencel"), and insolubilized alginate fiber; and made from at least any natural non-wood fiber selected from seed hair fibers selected from cotton and kapok, bast fibers selected from ramie, hemp, and kenaf, leaf fibers selected from Manila hemp (abaca) and Basho, and other plant fibers selected from bamboo, reed, papyrus, and rush; made from at least one animal fiber selected from wool, cashmere, silk, and camel hair; made of at least one inorganic fiber selected from glass fiber, alumina fiber, and metal fiber (stainless steel or copper); Made of carbon fiber; Or a blend of any of these That is what it is.

[0017] In this twisted paper yarn, the core yarn is any of the following core yarns: an untwisted single fiber; a single-twist fiber yarn in which the single fiber is twisted; a fiber bundle in which multiple fibers are bundled; a single-twist fiber yarn in which multiple single-twist fiber yarns or fiber bundles are twisted; and a yarn row in which multiple of any of these are arranged.

[0018] In this twisted paper yarn, the core yarn may be a single core yarn arranged at the center of the strip tape, or may be a plurality of core yarns arranged so that their central axes are at the center of the strip tape.

[0019] In this twisted paper yarn, the core yarn has a fineness of, for example, 75 to 600 denier, preferably 150 to 300 denier.

[0020] In this twisted paper yarn product, the belt-shaped tape has a width of, for example, 3 to 15 mm, preferably 3 to 10 mm.

[0021] This twisted paper yarn may be a single twisted paper yarn in which a single strip of tape is twisted; or a composite twisted paper yarn selected from a string in which a plurality of the single twisted paper yarns are twisted together, a rope in which a plurality of the strings are twisted together, a small rope in which a plurality of the ropes are twisted together, and a main rope in which any of the single twisted paper yarn, the string, the rope, and the small rope are twisted together.

[0022] In this twisted paper yarn, for example, the single twisted paper yarn is S twist or Z twist, or the composite twisted paper yarn is any combination selected from S twist, Z twist and two-ply twist.

[0023] This paper yarn twist is made of raw papermaking fibers, The aforementioned Naturally derived fibers, or The aforementioned A recycled material fiber, At least one wood fiber selected from broad-leaved trees such as beech, maple, chestnut, paulownia, birch, and / or elm, and soft-leaved trees such as cedar, pine, fir, cypress, and / or hemlock; At least one herbaceous bast fiber selected from paper mulberry, mitsumata, gampi, mulberry, hemp, flax, ramie, kenaf, jute, and Philippine gampi (sarago); At least one leaf fiber selected from the group consisting of abaca, sisal, banana, pineapple, and banana; At least any other plant fiber selected from bamboo, rice straw, wheat straw, bagasse, esparto, reed, papyrus, and rush grass; At least one seed fiber selected from cotton, linter, kapok, coconut, and palm; 、 tree pulp fibers selected from wood pulp and plant pulp; Powder-containing pulp fibers in which inorganic powder and / or organic powder are blended or incorporated into the pulp fibers; A recycled fiber selected from a material recycled from any of the above fibers and recycled paper pulp made from recycled paper. The fiber is at least one selected from the following:

[0024] This twisted paper yarn may be, for example, a soft twist with a maximum number of twists T of 500 per meter, a medium twist with a number of twists T of more than 500 but less than 1000, or a hard twist with a number of twists T of at least 1000. Specifically, the number of twists T is 100 to 4000, preferably 225 to 625.

[0025] The fabric made to achieve the above object is a fabric using the twisted paper yarn, and is a woven fabric using the twisted paper yarn as warp and / or weft. With things There is. The fabric may also be a knitted fabric containing the above-mentioned twisted paper yarn.

[0026] Products made from twisted paper yarns to achieve the above-mentioned object are selected from fabrics, clothing, footwear, bags, daily necessities, and decorative fabrics using this fabric.

[0027] The belt-shaped tape manufacturing device developed to achieve the above-mentioned object is characterized by comprising a core yarn unwinder, a storage tank for storing beaten and / or defibrated papermaking raw fiber in water, a mesh screen covering a slit of the tape width for entangling the papermaking raw fiber supplied from the storage tank with the core yarn while positioning the taut core yarn toward the center and filtering it into a papermaking belt-shaped tape, and a dryer for drying the belt-shaped tape filtered together with the core yarn while feeding it out.

[0028] The twisted paper yarn manufacturing device achieved in order to achieve the above object is characterized by comprising a core yarn unwinder, a storage tank for storing beaten and / or defibrated papermaking raw fiber in water, a mesh screen covering a slit of the tape width for entangling the papermaking raw fiber supplied from the storage tank with the core yarn while positioning the taut core yarn toward the center and filtering it into a papermaking strip tape, a dryer for drying the strip tape filtered together with the core yarn while sending it out, a twisting machine for twisting the strip tape together with the core yarn to make a twisted paper yarn, and a winding machine for winding up the twisted paper yarn.

[0029] The method for manufacturing twisted paper yarns made to achieve the above object is characterized in that a core yarn is unwound and the tensioned core yarn is positioned toward the center, while raw papermaking fibers that have been beaten and / or defibrated in water are entangled with the core yarn and filtered into a papermaking strip tape, the strip tape filtered together with the core yarn is sent out and dried, and then the strip tape together with the core yarn is twisted to form a twisted paper yarn. [Effects of the Invention]

[0030] The strip-shaped tape and twisted paper yarn of the present invention combine a core yarn with raw papermaking fibers, particularly plant fibers. The ends of the long sides of this twisted paper yarn are not cut but simply skimmed, gently interrupted, so the raw fibers are not cut or sharp, and the skimmed fibers are softly and unevenly interrupted, so the twisted paper yarn does not feel stiff, stiff, or rough to the touch, and is hypoallergenic. Furthermore, the core yarn, particularly the filament fibers of the core yarn, and the raw papermaking fibers are sufficiently intertwined and inseparable, and the papermaking portion is densely packed with voids, giving the twisted paper yarn a soft, gentle feel similar to Japanese paper, and the twisted paper yarn is skimmed and twisted to a uniform width. As a result, the papermaking tape of this twisted paper yarn has countless voids, just like regular Japanese paper, and the gaps between the core yarn and the raw papermaking fibers are larger than those of regular threads, allowing for the twisting of the tape.

[0031] In particular, this twisted paper yarn is such that the raw papermaking fibers are caught on, wrapped around, and / or wound around the core yarn, particularly the filament fibers of the core yarn, and are fully entangled with an average gap of approximately 200 μm or less, making them inseparable and integrated, and therefore the twisted paper yarn will not cut or break at the weaker side of the papermaking portion or core yarn portion of the strip tape 2 due to insufficient strength, and no change in shape occurs due to misalignment between the core yarn 3 and the fibers of the strip tape 2, resulting in excellent dimensional stability.

[0032] As a result, this twisted paper yarn does not lose the inherent properties of plant fibers, and retains the properties of paper, especially Japanese paper, such as excellent moisture absorption and quick drying (quick absorption and release of moisture), high breathability, flexibility, light weight (only about 60% of the weight of cotton yarn of the same diameter), soft and dry to the touch, supple firmness and resilience, smooth texture, anti-pilling properties with little fuzz, strong strength, good color development, heat resistance and weather resistance, while also exhibiting the inherent properties of the core yarn, such as moderate elongation, sewability, excellent strength and heat resistance, and depending on the raw material, it may even be biodegradable.

[0033] The fabrics of the present invention, which are woven or knitted using this paper yarn twist, have excellent properties such as moisture absorption and quick drying, high breathability, flexibility, light weight, soft feel, dry touch, supple firmness and stiffness, high strength, high colorability, heat resistance, moderate elongation, excellent strength, and smooth texture, and may even be biodegradable depending on the raw material.

[0034] According to the method and device for producing twisted paper yarns of the present invention, the twisted paper yarns can be produced easily, simply, and quickly with a high yield, while improving the efficiency of the production process of the twisted paper yarns, and is suitable for small- to large-scale production. [Brief explanation of the drawings]

[0035] [Figure 1] FIG. 2 is a schematic, partially cutaway perspective view showing a paper yarn twisted product according to the present invention in the course of production. [Figure 2] FIG. 1 is a partial perspective view showing a core yarn used in a paper yarn twisted product to which the present invention is applied. [Figure 3] FIG. 10 is a partial perspective view showing another embodiment of a twisted paper yarn product to which the present invention is applied. [Figure 4] 1 is a schematic diagram showing an outline of a belt-shaped tape manufacturing device in a paper yarn twisted product manufacturing device to which the present invention is applied. [Figure 5] 1 is a schematic diagram showing an outline of a twisting device in a paper yarn twisted product manufacturing apparatus to which the present invention is applied. [Figure 6-1] 1 is an enlarged photograph showing a paper yarn twisted product to which the present invention is applied and a paper yarn product to which the present invention is not applied. [Figure 6-2] 1 is an enlarged photograph showing another paper yarn twist to which the present invention is applied. [Figure 7] 1 is an enlarged photograph showing another paper yarn twist to which the present invention is not applied. [Figure 8] 1 is a graph showing the tensile strength and tensile elongation of a paper yarn twisted product to which the present invention is applied and a paper yarn to which the present invention is not applied. [Figure 9] 1 is a photograph showing the appearance of a fabric woven with twisted paper yarn to which the present invention is applied and a fabric to which the present invention is not applied. [Figure 10]1 is a graph showing the air permeability of a fabric woven with twisted paper yarn to which the present invention is applied and a fabric to which the present invention is not applied. [Figure 11] 1 is a graph showing the bending resistance of a fabric woven with twisted paper yarn to which the present invention is applied and a fabric to which the present invention is not applied. [Figure 12] 1 is a graph showing the drape coefficient of a fabric woven with twisted paper yarn to which the present invention is applied and a fabric to which the present invention is not applied. [Figure 13] 1 is a graph showing the water absorption capacity of a fabric woven with twisted paper yarn to which the present invention is applied and a fabric to which the present invention is not applied. [Figure 14] 1 is a graph showing moisture regain as a dryness of a fabric woven with twisted paper yarn to which the present invention is applied and a fabric to which the present invention is not applied. [Figure 15] 1 is a graph showing the change in weight as a function of dryness and moisture absorption of a fabric woven with twisted paper yarn to which the present invention is applied and a fabric to which the present invention is not applied. [Figure 16] 1 is a graph summarizing the results of sensory tests on fabrics woven with twisted paper yarn to which the present invention is applied and fabrics to which the present invention is not applied. [Figure 17] 1 is an enlarged photograph showing another paper yarn twist to which the present invention is applied. [Figure 18] 1 is an enlarged photograph showing another paper yarn twist to which the present invention is applied. [Figure 19] 1 is an enlarged photograph showing another paper yarn twist to which the present invention is applied. DETAILED DESCRIPTION OF THE INVENTION

[0036] Hereinafter, embodiments for carrying out the present invention will be described in detail, but the scope of the present invention is not limited to these embodiments.

[0037] 1, which shows the belt-shaped tape 2 of the present invention in the course of production, the belt-shaped tape 2 is a papermaking belt-shaped tape 2 (see FIG. 1(a)) in which a core yarn 3 consisting of a single core yarn tensioned in the longitudinal direction a-a' is arranged toward the center of the slit 12, i.e., toward the center of the width direction (the direction perpendicular to the smooth surface 2' in the longitudinal direction a-a': the same as the paper width direction), preferably along the center line (the center line in the longitudinal direction a-a' of the belt-shaped tape 2), more preferably overlapping on the center line, and is arranged in the middle, preferably in the center, of the thickness H direction of the belt-shaped tape 2 (see FIG. 1(a)), and is made together with the core yarn 3 so as to be entangled with the papermaking raw material fibers 4. The papermaking raw material fibers 4 are entangled and integrated with the filament fibers of the core yarn 3 by being caught on, wrapped around, and / or wrapped around them, and the papermaking raw material fibers 4 are further entangled with other papermaking raw material fibers 4 to form a papermaking region.

[0038] In this belt-shaped tape 2, the raw paper fibers are entangled with the core yarn at gaps of an average of 200 μm or less, preferably an average of 175 μm or less, and more preferably an average of 135 μm or less, and more specifically, the gaps are at most 450 μm and at most 200 μm or less on average.

[0039] The twisted paper yarn 10a of the present invention is made by twisting strip-shaped tapes (see FIG. 2(b)). It is efficient to manufacture a plurality of strip-shaped tapes 2 at once.

[0040] The belt-shaped tape 2 is made by drawing up together with the core yarn 3 from a fiber slurry 61 containing papermaking fibers 4 using a strainer 11 arranged to cover the opening of a slit 12 made in a papermaking tool 13 on the side opposite to the paper-making side. While the core yarn 3, particularly the filament fibers of the core yarn 3, are immersed in the fiber slurry 61 and pulled in under tension, the papermaking fibers 4, which flow freely in the fiber slurry 61, get caught on, cling to, and / or wind around the entire surface of the filament fibers of the core yarn 3. Furthermore, as the excess water falls freely during drawing up on the strainer 11, the papermaking fibers 4 remaining on the strainer 11 become sufficiently entangled with the core yarn 3 and the fibers that get caught, cling to, and / or wind around it, so that the core yarn 3 and the papermaking fibers 4 are uniformly integrated while remaining close to each other with an average gap of about 200 μm or less. To achieve this, it is preferable that the papermaking speed (i.e., the pulling speed of the core yarn 3; further, the rotation speed of the mesh cylinder 62 (see also Figure 4)) be 1 to 50 m / min (i.e., 16.7 to 833.3 mm / sec), preferably 3 to 20 m / min (i.e., 50 to 333.3 mm / sec). The long side edge 5 in the longitudinal direction a-a' of the strip-shaped tape 2 is formed to match the slit 12. Therefore, the strip-shaped tape 2 is made to match the slit edge 12' in the longitudinal direction a-a' of the slit 12 of the papermaking tool 13, but the long side edge 5 is much more uneven than the cut surface of the paper. In fact, it is not cut off during making, and some of the papermaking raw fiber 4 remains as it is during making, slightly and unevenly protruding beyond the long side edge 5. This, combined with the fact that the strip-shaped tape 2, along with the long side edge 5, has a soft feel.

[0041] The strip tape 2 is made and processed so that its width W, i.e., the paper width, is between 2 mm at the lower limit and 15 mm at the upper limit, preferably 3 to 10 mm. If the width of the strip tape 2 is less than 2 mm, not only will the position of the core yarn 3 vary, but the amount of paper making up the strip tape 2 will be too small, making it difficult to fully utilize the paper's performance when made into a twisted paper yarn product. On the other hand, if the width of the strip tape 2 exceeds 15 mm, it will be difficult to twist, and the twist will be uneven, resulting in poor homogeneity and reproducibility.

[0042] The belt-shaped tape 2 is made and processed so that its thickness H is 10 to 100 μm, preferably 10 to 60 μm. If the thickness of the belt-shaped tape 2 exceeds the upper limit of 100 μm, it is too thick and difficult or impossible to twist into a twisted paper yarn. On the other hand, if the thickness of the belt-shaped tape 2 is below the lower limit of 10 μm, it becomes approximately the same as the diameter of one raw fiber, and is too thin, making it impossible to fully utilize the papermaking performance when made into a twisted paper yarn.

[0043] The belt-shaped tape 2 has a basis weight of, for example, 2 to 40 g / m 2 The weight of the papermaking area is preferably 3 to 30 g, more preferably 5 to 30 g, and even more preferably 4 to 20 g / m 2 , more preferably 6 to 15 g, and even more preferably 6 to 7 g / m 2 Let's say.

[0044] The strip-shaped tape 2 has an appropriate paper width and thickness, and has a core yarn 3 arranged inside, and the papermaking raw material fibers 4 are caught on the core yarn 3 and cling to and / or wrapped around the filament fibers, becoming entangled.Furthermore, as the papermaking raw material fibers 4 are paper-made, it is possible to make a homogeneous and evenly twisted paper yarn twist 10 (see Figure 5).

[0045] In the slurry 21 containing the papermaking raw material fiber 4, the papermaking raw material fiber 4 is Beaten and / or defibrated natural fibers or recycled fibers, specifically: Wood fibers (stem fibers), for example, at least one wood fiber (stem fibers) selected from broad-leaved trees such as beech, maple, chestnut, paulownia, birch, and / or elm, and soft-leaved trees such as cedar, pine, fir, cypress, and / or hemlock, or Herbaceous bast fibers, such as bast fibers of at least one selected from paper mulberry, Mitsumata, gampi, mulberry, hemp, flax, ramie, kenaf, jute, and Philippine gampi (sarago), or Leaf fibers, such as leaf fibers of at least one selected from abaca, sisal, banana, pineapple, and banana; or Other plant fibers, such as at least one selected from bamboo, rice straw, wheat straw, bagasse, esparto, reed, papyrus, and rush grass, or seed hair fibers, such as at least one seed hair fiber selected from cotton, linter, kapok, coconut, and palm; or Animal fibers, such as at least one animal fiber selected from wool, cashmere, silk, camel hair, and feathers, or Pulp fibers, for example pulp fibers selected from wood pulp and plant pulp, or Powder-containing pulp fibers, for example, pulp fibers to which inorganic powders (e.g., mineral powders such as titanium oxide, zeolite, and talc, calcium carbonate powders or calcium carbonate-containing powders such as shell powder) and / or organic powders (e.g., eggshell membrane powder or polymer powder) have been blended or incorporated; or Recycled fibers, for example, recycled fibers selected from recycled materials of any of the above fibers and recycled paper pulp made from recycled paper; or Any of these mixed fibers Among these, preferred are herbaceous bast fibers commonly used in Japanese paper, selected from paper mulberry, mitsumata, and gampi, and leaf fibers such as Manila hemp.

[0046] By adjusting the concentration of the papermaking raw material fibers 4 in the beaten slurry 21 containing the papermaking raw material fibers 4, or by adjusting the papermaking speed (i.e., the pulling speed of the core yarn 3 or the rotation speed of the mesh cylinder 62), it is possible to control the basis weight of the strip tape 2 or its papermaking portion.

[0047] The papermaking raw material fibers 4 have a fiber length of 30 mm or less, preferably 5 to 15 mm, and more preferably around 10 mm. The fiber length may be achieved by beating and / or defibrating and cutting.

[0048] The core yarn 3 may be composed of a single fiber 3a, as shown in FIG. 2(a). It may also be a single-twist single-fiber yarn (not shown) made by twisting this single fiber 3a. It may also be a fiber bundle 3b made by bundling a plurality of fibers 3a, as shown in FIG. 2(b). It may also be a single-twist fiber yarn 3c made by twisting the fiber bundles 3b made of the plurality of fibers 3a. It may also be a plied yarn 3d made by plying a plurality of single-twist fiber yarns 3c, which are first twisted, with a second twist, as shown in FIG. 2(d). As shown representatively in FIG. 2(e) using the example of single-twist fiber yarn 3c, any one of the fiber 3a, the single-twist single-fiber yarn, the fiber bundle 3b, the single-twist fiber yarn 3c, and the plied yarn 3d may form a yarn row 3e. In any case, the core yarn 3 is more likely to be uniform when twisted if it is positioned near the center of the belt-shaped tape 2, preferably in the center.

[0049] The diameter Φ of a single fiber 3a (see FIG. 2(a)) is preferably 1 to 8 denier (8 denier is approximately 30 μm), and more preferably 2 to 3 denier. The diameter of a fiber bundle 3b (see FIG. 2(b)) or a twisted single twist fiber yarn 3c (see FIG. 2(c)) formed by bundling or twisting multiple fibers 3a···· 3a is a maximum of approximately 60 μm when two fibers are bundled or twisted, and is approximately 75 to 600 denier when 75 fibers are bundled or twisted, preferably approximately 150 denier. The fiber diameter Φ of the single twist single fiber yarn, fiber bundle 3b, single twist fiber yarn 3c, and ply yarn 3d (see FIGS. 2(c) and 2(d)) is determined depending on the number of fibers bundled or twisted by multiple fibers 3a···· 3a. The denier value indicates the mass (g) of 9000m of fiber, etc.

[0050] The fiber diameter Φ or fiber diameter φ of the core yarn 3 is smaller than the thickness H of the belt-like tape 2, so that the core yarn 3 does not protrude from the smooth upper and lower surfaces 2 of the belt-like tape 2.

[0051] The core yarn 3 is, for example, a filament made of continuous long fibers.

[0052] The material of the core yarn 3 is not particularly limited as long as it can maintain the properties of the twisted paper yarn 10 (see FIG. 5; the same applies below), and may be a commercially available product, such as a naturally derived fiber, a chemically synthesized fiber, a fiber derived from recycled raw materials, or a fiber derived from biomaterials. Specifically, At least one synthetic fiber selected from polyester, polyamide (e.g., nylon, polyparaphenylene terephthalamide: registered trademark "Kevlar"), polyacrylate, polyacrylonitrile, vinylon (polyvinyl alcohol), polyolefin (e.g., polyethylene, polypropylene), polyvinyl chloride, polyvinylidene chloride, and polyurethane; made of at least one semi-synthetic fiber selected from acetate, triacetate, and promix; Made from at least one chemical fiber and / or regenerated fiber selected from viscose rayon, cuprammonium rayon (cupro, registered trademark "Bemberg"), polynosic, lyocell (brand name "Tencel"), and insolubilized alginate fiber; and made from at least any natural non-wood fiber selected from seed hair fibers selected from cotton and kapok, bast fibers selected from ramie, hemp, and kenaf, leaf fibers selected from Manila hemp (abaca) and Basho, and other plant fibers selected from bamboo, reed, papyrus, and rush; made from at least one animal fiber selected from wool, cashmere, silk, and camel hair; made of at least one inorganic fiber selected from glass fiber, alumina fiber, and metal fiber (stainless steel or copper); Made of carbon fiber; Or a blend of any of these It is acceptable to have the following.

[0053] The twisted paper yarn 10 may be a single twisted paper yarn 10a in which a single strip-shaped tape 2 is twisted (see Figure 1(b)), or may be a string 10b in which a plurality of single twisted paper yarns 10a, for example, 2 to 4, preferably 2, are twisted together (see Figure 3(a)), or may be a composite twisted paper yarn selected from a rope (not shown) in which a plurality of such strings 10b, for example, 2 to 4, preferably 2, are twisted together, and a cord (not shown) in which a plurality of such ropes, for example, 2 to 4, preferably 2, are twisted together.

[0054] As shown in Fig. 1(b), the twisted paper yarn 10 is an S-twist (right twist) or Z-twist (left twist), preferably Z-twist, when it is a single twisted paper yarn 10a. Also, as shown in Fig. 3(a), when it is a rope 10b in which a plurality of, for example, two, single twisted paper yarns 10a are twisted, the twisted paper yarn 10 is, for example, an S-twist or Z-twist single twisted paper yarn 10a twisted together into a two-ply twist. Furthermore, when it is a rope in which a plurality of, for example, two, ropes 10b are twisted together, the twisted paper yarn 10 is, for example, an S-twist or S-twist multiple ropes twisted together into an S-twist or Z-twist. In addition, the single paper yarn twisted yarn 10a, the rope 10b, and the filament rope may be combined and twisted in an S twist or Z twist to form a main rope, or multiple of these or multiple of these may be twisted sequentially (not shown) (hereinafter, the single paper yarn twisted yarn 10a, the rope 10b, the rope, the small rope, or the main rope, or all of these may be collectively referred to as the paper yarn twisted material 10). Although single twist and double twist have been described as examples, square twist, wall twist and decorative twist may also be used.

[0055] When S-twisting, Z-twisting, or doubling twisting the twisted paper yarn 10, it may be twisted using any of the following methods: a soft twist in which the number of twists T per meter is less than 500; a medium twist in which the number of twists T is 500 or more but less than 1000; or a hard twist in which the number of twists T is 1000 or more; however, it is preferable that the number of twists T is 100 to 4000, and more preferably 225 to 625.

[0056] The paper yarn twist 10 can be used to prepare various fabrics (not shown).

[0057] The fabric includes woven fabrics and knitted fabrics.

[0058] Among the fabrics, examples of woven fabrics include fabrics woven using twisted paper yarn 10, fabrics woven with either or part of the warp and weft threads made of twisted paper yarn 10 and the rest made of various yarns such as cotton yarn, linen yarn, wool yarn, silk yarn, rayon yarn, nylon yarn, polyester yarn, and acrylic yarn other than the twisted paper yarn 10, and fabrics woven with either the warp and weft threads made of twisted paper yarn 10. The weaving method is not particularly limited, and when woven on a loom, plain weave, twill weave, satin weave, or other weaving methods are also possible.

[0059] Among the fabrics, the knitted fabric may be knitted using only the twisted paper yarn 10, or may be knitted using the twisted paper yarn 10 and the various yarns described above. The knitting method is not particularly limited, but may be any of plain knitting (jersey knitting), rib knitting (rib knitting), purl knitting, or other knitting methods when knitted by a knitting machine or by hand.

[0060] Such woven and knitted fabrics are widely used for clothing, such as fabrics and knitted fabrics for Western and Japanese clothing; clothing, such as Western clothing, Japanese clothing, sweaters, shirts, gowns, stoles, shawls, underwear, undergarments, socks, sportswear, and Japanese clothing; footwear, such as shoes, sneakers, and sandals; bags and pouches, such as shoulder bags, handbags, wallets, and drawstring pouches; daily necessities, such as towels, handkerchiefs, and other personal items, and coasters and other kitchen utensils; and decorative fabrics, such as curtains, curtains, tapestries, and decorative fabrics for dolls.

[0061] Such fabrics are formed using twisted paper yarn 10, and depending on the raw materials, if the core yarn 3 or twisted paper yarn 10, especially the twisted paper yarn 10, is biodegradable, it will not place a burden on the environment, or if it is plant-derived, it will not increase carbon dioxide even if it is incinerated or discarded because it is plant-derived.

[0062] The following describes the manufacturing device 100 for the twisted paper yarn 10 and the manufacturing method using the same. As a specific example, an example of the manufacturing method for the twisted paper yarn 10 will be described using Japanese paper, particularly paper mulberry paper, as the belt-shaped tape and rayon yarn as the core thread, but the technical scope of the present invention is not limited to this specific example.

[0063] First, the process for preparing the twisted paper yarn 10 using the raw material paper mulberry will be described below with reference to Figures 4 and 5. The twisted paper yarn 10 is produced using a twisted paper yarn production device 100.

[0064] The twisted paper yarn manufacturing device 100 comprises a strip-shaped tape manufacturing device 100A (see FIG. 4) and a twisting device 100B (see FIG. 5).

[0065] The strip tape manufacturing apparatus 100A includes: A beater (holender beater) 20 is used to immerse paper mulberry fibers, which are raw materials for papermaking, in water in a beating tank 23. The beater rotates a beating roller 22 with embedded steel blades, and applies strong compressive and shearing forces to the paper mulberry fibers between the roller and a fixed blade installed below, grinding and beating the fibers into a beaten slurry 21. A defibrator (naginata beater) 30 that transfers the beaten slurry 21 to a defibration tank 33 by a pump and converts the beaten slurry into a defibrated slurry 31 by rotating a defibration roller 32 having a naginata blade; a refler 40 that pumps, transfers, and continuously injects defibrated slurry 31 into a storage tank 43, while pumping, transferring, and continuously discharging defibrated slurry 31 into a vat 63, and causes the water flow to meander using a refler plate that protrudes and extends from the tank bottom toward the liquid surface in the storage tank 43 and a refler plate 42 that extends from the liquid surface toward the tank bottom, thereby adjusting the concentration of the belt-shaped tape 2 or its papermaking portion to a predetermined basis weight and turning it into an agitated slurry 41 in which the fibers are uniformly agitated; a core yarn unwinding machine 50 that unwinds the core yarn 3 under tension; The apparatus has a relatively large vat 63 that continues to transport the agitated slurry 41 with a pump so that the concentration of the belt-shaped tape 2 or its papermaking portion becomes a predetermined basis weight, and the core yarn 3 is guided by a guide pipe 64 into the fiber slurry 61 containing a constant concentration of papermaking raw material fibers 4 (see Figure 1). The core yarn 3 is immersed in the fiber slurry 61, and during this time the papermaking raw material fibers 4 begin to get caught, cling to, and / or wrap around and entangle the core yarn 3, while the guide roller 65 brings the core yarn 3 into contact with a circular mesh cylinder. a strip-shaped tape making machine having a circular mesh cylinder 62 in which the direction of tension is changed as shown in Fig. 1 and the papermaking raw material fibers 4 in the fiber slurry 61 are drawn together with the core yarn 3 through a mesh 11 (see Fig. 1) and the core yarn 3 is tensioned at the beginning of the process of making the papermaking raw material fibers 4 together with the core yarn 3, so that the filament fibers of the core yarn 3 and the papermaking raw material fibers 4 are tightly integrated and made into paper together with other papermaking raw material fibers 4, and excess water is allowed to fall naturally into the cylinder to form a wet strip-shaped tape 2; a dryer 70 in which the wet strip tape 2 is transferred onto a drying drum 71 by a delivery belt (not shown) driven by a couch roll, and then dried by a guide roller 72, and the dry strip tape 2 is peeled off from the drying drum 71 by a guide roller 73; The apparatus also includes a strip-shaped tape winding machine that winds the obtained strip-shaped tape 2 onto a winding roll 81.

[0066] The twisting device 100B has a bobbin 90 that twists the strip-shaped tape 2 unwound from the winding roll 81 to form the twisted paper yarn material 10 and then winds it up.

[0067] The strip tape 2 and the twisted paper yarn 10 are produced as follows.

[0068] To produce the strip tape 2 and twisted paper yarn 10, cultivated kozo logs are first harvested and steamed in a cauldron to soften the bark. The bark is then peeled off to reveal the bark, and any foreign matter or scratches are removed. The bark is then sun-dried and stored to produce kozo raw material. This kozo raw material is then cut. To remove impurities and improve the permeability of caustic soda during cooking, the kozo raw material is soaked in a running water tank for seven days. The kozo raw material is then boiled in an aqueous solution of alkaline lye, soda ash, or caustic soda, preferably granular caustic soda (manufactured by Tosoh Corporation), to dissolve impurities. After this, the kozo raw material is again soaked in running water to remove the scum and obtain refined kozo.

[0069] Instead of paper yarn made from paper mulberry, paper yarn may be made from at least one herbaceous bast fiber selected from mitsumata, gampi, mulberry, hemp, flax, ramie, kenaf, jute, and Philippine gampi, or from at least one fiber selected from the leaf fibers, other plant fibers, seed hair fibers, animal fibers, pulp fibers, powder-containing pulp fibers, and recycled fibers. Among these, herbaceous bast fibers commonly used in Japanese paper, selected from mitsumata and gampi, or leaf fibers such as Manila hemp, and pulp fibers such as wood pulp, are practical and preferred.

[0070] Next, as shown in FIG. 4, water is added to the refined paper mulberry in a beating tank 23 so that the concentration is about 1 to 2% by weight, and the refined paper mulberry fiber is ground and beaten in a beating machine 20 to obtain beaten slurry 21. The beaten slurry 21 is then transferred to a defibrating tank 33, where it is defibrated in a defibrator 30 with a halberd-shaped rotary blade to obtain raw fiber for papermaking. The defibrated slurry 31 is then mixed with a thickener (avocado, the bark of the panicle tree, the root of the Chinese parasol tree, the daffodil, the myrtle, the red spider lily, the beech tree, the laurel ... A defibrated slurry 31 containing natural thickeners that have been used since ancient times, such as vine and dogwood; and chemical thickeners that have recently become popular, such as acrylic acid sodium copolymer (manufactured by DiaNitrix Co., Ltd., product name: ACRYPERS), the granular thickener PAMOL (manufactured by Meisei Scientific Industry Co., Ltd.), and polyacrylamide (preferably chemical thickeners), more specifically the granular thickener PAMOL (blended concentration: 0.02%), and defibrated paper mulberry fiber is prepared. Next, the defibrated slurry 31 is transferred to a storage tank 43, and the defibrated paper mulberry fiber is uniformly agitated by a refler 40 to form an agitated slurry 41.

[0071] The stirred slurry 41 is diluted as necessary, pumped up and transferred to a core yarn-combining vat 63 to form a fiber slurry 61 in which the raw fiber for papermaking 4 (see also FIG. 1) is uniformly dispersed.

[0072] Meanwhile, a core yarn 3 (see Figure 2(b) or (c)), which is made by bundling or twisting multiple rayon filament fibers, is unwound under tension from the core yarn unwinder 50 and sent to a fairly large core yarn-combining vat 63, where it is turned around in a guide pipe 64 and immersed in a fiber slurry 61. At this time, the fibers of the fiber slurry 61 begin to become entangled with the core yarn 3 in the vat 63 as they get caught, cling to, and wrap around it, and are slowly drawn toward the cylindrical mesh cylinder 60. A guide roller 65 brings the core yarn 3 into contact with the cylindrical mesh cylinder 62. The fibers of the fiber slurry 61 floating freely around the core yarn 3 are caught, clinging to, or wrapped around the filament fibers of the core yarn 3 on the mesh cylinder 60, becoming more entangled, and the fibers of the core yarn 3 and the fibers of the fiber slurry 61 are entangled three-dimensionally around the core yarn 3 and are spun into a tape shape.

[0073] The mesh cylinder 60 has a strainer 11 arranged circumferentially around the cylinder to cover the paper-making side and the opposite side of a plurality of slits 12, each 2 to 15 mm wide, to form a papermaking tool 13. The cylinder rotates slowly at a speed of 1 to 50 m / min, preferably 3 to 20 m / min, so that the fibers of the fiber slurry 61 are picked up on the paper-making side of the slits 12, and the core yarn 3 is pulled and taut so that it is in the center of the strainer 11, allowing paper to be made together with the core yarn 3 (see Figure 1). At this time, the core yarn 3 is tensioned because it is pulled by the guide roller 72. Therefore, the fibers of the fiber slurry 61 that are caught on, wrapped around, or wound around the filament fibers of the core yarn 3 become entangled, and as the mesh cylinder 62 rotates, the fibers of the fiber slurry 61 are scooped up and skimmed together with the core yarn 3, just like in papermaking. As a result, the fibers of the fiber slurry 61 have already become caught, entangled, or wrapped around the filament fibers of the core yarn 3, and the fibers of the core yarn 3 and the fibers of the fiber slurry 61 are entangled, which triggers the fiber slurry 61 to become even more entangled around the core yarn 3.As the fiber slurry 61 is made into paper together with the other fiber slurries 61, it eventually becomes intricately entangled and integrated, and the taut core yarns near the center become entangled with the raw fiber for papermaking, the gaps between the fibers are made uniform, and a wet paper-made belt-shaped tape 2 is obtained which is a densely packed and entangled untwisted yarn.

[0074] A plurality of core yarns 3 are arranged on the screen 11 of the slit 12, preferably near the center of the slit width, and the core yarns 3, together with the raw papermaking fibers 4 in the fiber slurry 61, are made up by a papermaking tool 13 on a circular mesh cylinder 62 provided with one or more screens 11. By making the inside of the mesh cylinder 62 hollow, the water in the fiber slurry 61 turns into droplets and naturally falls into the inside of the mesh cylinder 62, making it easier to filter. The strainer 11 of the mesh cylinder 62 that is immersed in the fiber slurry 61 filters slightly in the area that is immersed in the fiber slurry 61, but cannot filter very well due to the water pressure and the high viscosity of the fiber slurry 61. However, the strainer 11 of the mesh cylinder 62 that is exposed above the water surface of the fiber slurry 61 is released from the water pressure and the high viscosity of the fiber slurry 61, and can filter moderately well. At this time, the water falls into the inner space of the rotating mesh cylinder 62 and is slowly dehydrated, gradually forming a wet strip-shaped tape 2 with a width of 2 to 15 mm, with the core thread 3 positioned midway in the thickness H direction and near the center in the width W direction (see also Figure 1).

[0075] Since the fiber slurry 61 is in a uniformly dispersed state, the fibers thereof are easily entangled with the core yarn 3. As the amount of raw fiber 4 for papermaking in the core yarn-combined vat 63 decreases due to the papermaking process, the agitated slurry 41 is diluted and pumped up to replenish the amount by a fixed amount per unit time into the core yarn-combined vat 63, thereby maintaining the concentration of the uniformly dispersed fiber slurry 61 at a constant level.

[0076] Instead of using rayon as the core thread, the core thread may be made of chemical fibers such as cuprammonium rayon and / or recycled fibers, or may be made of synthetic fibers, semi-synthetic fibers, natural non-wood fibers, animal fibers, inorganic fibers, carbon fibers, or a blend of any of these.

[0077] The wet strip tape 2 on the mesh cylinder 62 is peeled off, placed on a delivery belt (not shown) driven by a blanket couch roll, and delivered, and transferred to a drying drum 71 of a dryer 70 by a guide roller 72. On the drying drum 71, the wet strip tape 2 is dried by heating and / or air blowing to become a dry strip tape 2. The resulting strip tape 2 is peeled off from the drying drum 71 by a guide roller 73, and the strip tape 2 is taken up on a take-up roll 81 of a strip tape take-up machine 80.

[0078] In this case, the series of steps of unwinding the core yarn 3 from the core yarn unwinder 50, making the paper in the slit 12 on the mesh cylinder 62, and winding the paper on the winding roll 81 of the winder 80 can be set multiple times, and the more times there are, the more efficient the papermaking process becomes to obtain the strip tape 2. In practice, up to 54 pieces can be applied, but more is also possible.

[0079] Next, as shown in Figure 5, using a twisting device 100B, the strip tape 2 is unwound from the winding roll 81 of the strip tape winding machine 80 and twisted with a spinner (not shown), and the twisted paper yarn 10 is obtained by spinning, and is then wound onto a bobbin 90.

[0080] Furthermore, by appropriately adjusting the type and material of the raw filament of the core yarn and the tape width of the strip tape 2 during papermaking, the paper yarn can be made flexible despite being made of paper, and the inclusion of the core yarn sufficiently increases the entanglement between the core yarn and the papermaking area, and the ends of the strip tape 2 are not cut but simply skived and are gently discontinued, so the raw fibers are not cut and there are no sharp edges, making it possible to produce a paper yarn twist 10 that is gentle to the touch, hypoallergenic, and has an excellent feel.

[0081] Using this twisted paper yarn 10, various fabrics are woven using a loom or knitting machine, for example, into woven fabrics using the twisted paper yarn 10 as the warp and / or weft, and knitted fabrics (not shown) that include the twisted paper yarn 10. More specifically, the woven fabric may have the twisted paper yarn 10 as the warp and weft, or one of the warp or weft may be the twisted paper yarn 10 and the other may be cotton, silk or synthetic yarn. [Example]

[0082] Examples to which the present invention is applied and comparative examples to which the present invention is not applied will be described in detail below.

[0083] First, a paper yarn twist 10 of mulberry-cupra core yarn was prepared and woven into a fabric.

[0084] (Raw Material Preparation Example 1: Preparation of Paper Mulberry Slurry, a Raw Material for Washi Paper) After cultivating and defoliating the mulberry logs, they were harvested and steamed in a cauldron for 2-3 hours to soften the bark. The bark was then peeled off, and the black bark on the surface was removed to reveal the white bark. Any foreign matter or scratches were removed by rubbing with a spatula or similar tool. The bark was then sun-dried and stored to prepare the mulberry raw material. This mulberry raw material was then cut into approximately 10 mm pieces using an Onouchi cutter (Onouchi Seiko Co., Ltd.). The mulberry raw material was soaked in running water for 7 days to remove impurities and improve the permeability of caustic soda during cooking. The mulberry raw material was then boiled for 5 hours in a 50% by weight aqueous solution of granular caustic soda (Tosoh Corporation) to dissolve the impurities. After this, the bark was again soaked in running water for 7 days to remove the scum and soak for 7 days. Any remaining dust, scars, or bud marks were removed, yielding refined mulberry.

[0085] (Example 1 of twisted paper yarn preparation) To produce a prototype paper yarn twist 10 made of mulberry-cupra core yarn, the purified mulberry obtained in Raw Material Preparation Example 1 and cupra core yarn (manufactured by Asahi Kasei Corporation; 150 denier, bundle of 70 cupra fibers, average fiber diameter 2.143 μm) were used as the core yarn 3. As shown in Fig. 4, water was added to the refined paper mulberry obtained in Raw Material Preparation Example 1 in a beating tank 23 to a concentration of approximately 1 to 2% by weight, and the refined paper mulberry fiber was ground and beaten in a beater 20 to obtain beaten slurry 21, which was then transferred to a defibrating tank 33 and defibrated in a defibrator 30 to form raw papermaking fibers to obtain defibrated slurry 31, and a thickener was added to make defibrated slurry 31. Next, defibrated slurry 31 was transferred to a storage tank 43, and the raw papermaking fibers were uniformly stirred in a riffler 40 to make an agitated slurry 41 with a concentration that would give the belt-shaped tape 2 or its papermaking portion the desired basis weight. The agitated slurry 41 was pumped up and transferred to a core yarn-composing vat 63, where it was made into a fiber slurry 61 in which the raw papermaking fibers were uniformly dispersed. Meanwhile, cupra core yarn 3 was tensioned and fed from core yarn unwinder 50 to unwinding core yarn-combining vat 63, where it was immersed in fiber slurry 61. Guide roller 65 brought core yarn 3 into contact with cylindrical mesh cylinder 62, and core yarn 3 and the fibers of fiber slurry 61 were mixed on cylindrical mesh cylinder 60 to form a tape, yielding strip tape 2. The wet strip tape 2 was peeled from cylindrical mesh cylinder 62, transferred to drying drum 71 of dryer 70, dried by heating and / or air blowing, and wound around winding roll 81 of strip tape winder 80 to produce strip tape 2 with a tape width of 4 mm and a thickness of 20 μm. Next, this strip tape 2 was Z-twisted to a twist count T per meter of 500, to produce paper yarn twist 10 made of paper mulberry-cupra core yarn to which the present invention is applied.

[0086] (Fabric Manufacturing Example 1) The twisted paper yarn 10, which was made of the obtained mulberry-cupra core yarn for both the warp and weft, was plain woven on a shuttle loom to produce a woven fabric of twisted paper yarn with mulberry-cupra core yarn to which the present invention is applied. The basis weight of this fabric was 258.1 g / m 2 It was.

[0087] Next, for comparison, a paper yarn twisted material without a Manila hemp core was prepared, and a woven fabric of the same was produced to which the present invention was applied.

[0088] (Comparative Example 1 for Preparation of Twisted Paper Yarn) A Manila hemp-coreless paper yarn twist, which is not applicable to the present invention, was prepared in the same manner as in Example 1 for preparing twisted paper yarn, except that commercially available Manila hemp Japanese paper was cut into 6 mm pieces using a slitter TB-2A type (trade name, manufactured by Nishimura Manufacturing Co., Ltd.) to prepare a tape without a core yarn.

[0089] (Textile manufacturing comparison example 1) A woven fabric of Manila hemp-paper yarn twisted without a core was produced as a fabric in the same manner as in Fabric Production Example 1, except that a Manila hemp-paper yarn twisted without a core was used. The basis weight of this fabric was 260.8 g / m 2 It was.

[0090] (Textile manufacturing comparative example 2) A cotton fabric to which the present invention does not apply was produced in the same manner as in Fabric Production Example 1, except that commercially available cotton yarn was used instead of the paper yarn twisted with mulberry-cupra core yarn. The basis weight of this fabric was 330.5 g / m 2 It was.

[0091] For comparison and reference, a paper yarn twisted fabric according to Patent Document 4 and a paper yarn woven fabric made by cutting paper mulberry or Manila hemp into strip-shaped tapes and twisting them as in the conventional method were prepared as follows.

[0092] (Reference example 1 for preparing twisted paper yarn) For comparative reference, in accordance with Patent Document 4, a cupra core yarn (manufactured by Asahi Kasei Corporation; 150 denier, 70 twisted cupra fibers, average fiber diameter 2.143 μm) was used as the core yarn in the same manner as in Example 1 of preparing a twisted paper yarn. A yarn raw material supply step was performed in which raw Japanese paper (using paper mulberry) to be processed into Japanese paper was supplied as the thread raw material in a linear or belt shape into the recessed portion of the belt of the knitted tape, which was rotated and driven in a substantially V-shape; and the linear or belt-shaped yarn supplied into the recessed portion of the belt of the knitted tape was supplied. The method conforms to Patent Document 4 and involves a moisture removal process in which moisture is sucked and removed from the belt-shaped yarn raw material, a fiber entanglement process in which both ends of the knitted tape belt are moved up and down after the moisture removal process to entangle the fibers and process them into thin yarns, a yarn twisting process in which twist is added to the thin yarns that have left the knitted tape belt after the fiber entanglement process, and a drying process in which drying is carried out before and after the yarn twisting process.A triangular prism-shaped twisted paper yarn with a cross-sectional area of an approximately equilateral triangle and a core yarn in the center was prepared.

[0093] (Reference example 2 for preparing twisted paper yarn) For comparative reference, a twisted paper yarn was prepared in the same manner as in Twisted Paper Yarn Preparation Example 1, except that the core yarn in Twisted Paper Yarn Preparation Example 1 was not used and the longitudinal ends of the obtained intermediate strip tape were cut with a cutter to form a strip tape.

[0094] (Reference example 3 for preparing twisted paper yarn) For comparison, a twisted paper yarn was prepared in the same manner as in Comparative Example 1 for preparing twisted paper yarn, except that the longitudinal ends of the intermediate strip tape obtained in Comparative Example 1 for preparing twisted paper yarn were cut with a cutter to form a strip tape.

[0095] The physical properties of the twisted paper yarn with mulberry-cupra core yarn obtained in twisted paper yarn preparation example 1, the twisted paper yarn without Manila hemp core yarn obtained in twisted paper yarn preparation comparative example 1, and the twisted paper yarn obtained in twisted paper yarn preparation reference example 1 were evaluated as follows. The physical properties of the twisted paper yarn obtained in twisted paper yarn preparation reference example 2 and the twisted paper yarn obtained in twisted paper yarn preparation reference example 3 were also evaluated.

[0096] (Evaluation of physical properties of twisted paper yarn 1: Magnified observation using an optical microscope) The twisted paper yarn with mulberry-cupra core yarn obtained in Example 1 of Twisted Paper Yarn Preparation to which the present invention is applied, the twisted paper yarn without Manila hemp core yarn obtained in Comparative Example 1 of Twisted Paper Yarn Preparation to which the present invention is not applied, and the twisted paper yarn obtained in Reference Example 1 of Twisted Paper Yarn Preparation in accordance with Patent Document 4 to which the present invention is not applied were each magnified and observed under incident light using a multipurpose optical microscope DM 4B / DFC450 (trade name, manufactured by Leica Microsystems KK). The results are shown in Figures 6-1 and 6-2. For the twisted paper yarn with mulberry-cupra core yarn obtained in Example 1 of Twisted Paper Yarn Preparation to which the present invention is not applied, and the twisted paper yarn obtained in Reference Example 1 of Twisted Paper Yarn Preparation in accordance with Patent Document 4, the shortest distance to adjacent fibers at any given fiber location was used to determine the average inter-fiber distance at multiple locations, as shown in Figure 6-1, using a Digital Microscope KH-7700 (trade name, manufactured by Hirox Co., Ltd.). The maximum, minimum and average values, as well as the significant differences between Twisted Paper Yarn Preparation Example 1 and Twisted Paper Yarn Preparation Reference Example 1, are shown in Table 1. A significant difference was determined using Student's t-test, with p<0.05 being considered significant. Furthermore, for comparison, the twisted paper yarn obtained in Twisted Paper Yarn Preparation Reference Example 2, which is not an application of the present invention, and the twisted paper yarn obtained in Twisted Paper Yarn Preparation Reference Example 3 were each observed under magnification using the same optical microscope under incident light. The results are shown in Figure 7.

[0097] [Table 1]

[0098] As is clear from the micrograph in Figure 6-1, twists could be seen in the paper yarn twist without Manila hemp core yarn in paper yarn twist preparation comparison example 1, but no twists could be seen in the paper yarn twist with mulberry-cupra core yarn in paper yarn twist preparation example 1. This suggests that the paper yarn twist made from mulberry-cupra core yarn to which the present invention is applied is not cut at the ends of the long sides of the tape but is simply skived and gently interrupted, so the raw fibers are not cut and do not form sharp edges, and the skived fibers are softly and unevenly interrupted, so when made into a fabric, it does not feel hard, stiff, or rough to the touch, and is therefore hypoallergenic.

[0099] Furthermore, as is clear from the micrograph in Figure 6-1, in the paper yarn twist of paper yarn twisted example 1 made of mulberry-cupra core yarn, the paper yarn fibers get caught on, cling to, and / or wrapped around the fibers of the cupra core yarn, directly entangled and integrated with them, whereas in the paper yarn twisted example 1 made of paper yarn twisted reference example 1, the fibers of the Japanese paper raw material are loosely entangled and entangled in patches around the core yarn, but are not significantly entangled with or integrated with the fibers of the core yarn, and simply cover them.

[0100] Furthermore, as shown in Table 1, the twisted paper yarn made of mulberry-cupra core yarn obtained in twisted paper yarn preparation example 1 had an inter-fiber distance of only 89 to 430 μm (average 172 μm) with a small standard deviation of 63 μm, showing little variation, whereas the twisted paper yarn obtained in twisted paper yarn preparation reference example 1 in accordance with patent document 4 had an inter-fiber distance of 76 to 983 μm (average 332 μm), which was roughly twice as large, with a standard deviation of 205 μm, showing a large variation. There was a significant difference between the two, with p<0.05.

[0101] Although the details that cause these differences are not entirely clear, they are presumed as follows. In the twisted paper yarn of Reference Example 1 for preparing twisted paper yarn, a tensioned core yarn is placed in the deepest part of the knitted tape (mesh) that is rotating and driven in a V-shape, and both ends of the knitted tape belt are moved up and down to shake, supplying the raw yarn material to the knitted tape, and moisture is removed from the linear or band-like raw yarn material supplied into the recesses of the knitted tape belt (i.e., it falls directly below), forming a band-shaped tape. At this time, the core yarn of the knitted tape belt is covered with a slurry of raw yarn fiber material and is immediately dehydrated, so that there is no longer enough time for the raw fiber material to firmly entangle with the core yarn, and the fiber slurry clings to the core yarn in a fairly sparse and uneven manner between fibers and between fibers and core yarn, leaving loose, wide gaps between them, forming a band-shaped tape and twisting it. It is presumed that this is because the raw fiber material accumulates unevenly, clinging to the core yarn, and is not dense. On the other hand, in the paper yarn twist of mulberry-cupra core yarn obtained in Example 1 of the paper yarn twist preparation, the fibers of the fiber slurry 61 begin to become entangled with the core yarn 3 in the batt 63 as they get caught, wrapped around, and wound around it, and are then drawn toward the cylindrical mesh cylinder 60. As a result, the fibers of the fiber slurry 61 floating freely around the core yarn 3 get caught, wrapped around, and wound around the filament fibers of the core yarn 3 more frequently on the cylindrical mesh cylinder 60, and become even more entangled. As a result, the fibers of the fiber slurry 61 are entangled three-dimensionally around the core yarn 3 in a uniform and fairly dense manner, without unevenness or sparseness between fibers or between fibers and core yarn, and are spun into a tape-like shape, the distance between the fibers becomes shorter, and the fibers appear to be tightly wrapped around each other.

[0102] Therefore, it is suggested that the paper yarn twisted material of paper mulberry-cupra core yarn in paper yarn twisted material preparation example 1 does not change shape and has excellent dimensional stability because the paper mulberry fibers are entangled and integrated with the fibers of the cupra core yarn. In fact, as will be described later, this is supported by the fact that the wider the tape width is compared to the paper yarn twisted material of paper mulberry-cupra core yarn obtained in paper yarn twisted material preparation example 1, the shorter the inter-fiber distance is.

[0103] Furthermore, as is clear from the micrograph in Figure 6-2, when measured under incident light using a digital microscope KH-7700 (trade name, manufactured by Hirox Co., Ltd.), the twisted paper yarn with mulberry-cupra core yarn in paper yarn twist preparation example 1 had a diameter of 635 to 780 μm, with a small deviation, whereas the twisted paper yarn with Manila hemp-no core yarn in paper yarn twist preparation comparative example 1 had a diameter of 600 to 790 μm, with a large deviation.

[0104] Furthermore, as is clear from the micrograph in Figure 7, the twisted paper yarns obtained by twisting together the paper mulberry or Manila hemp strips cut at the longitudinal ends of the twisted paper yarn preparation reference examples 2 and 3 have exposed cut fibers at the cut surfaces, which create sharp edges and make the fibers prickly, resulting in a poor texture and an unpleasant feeling due to the irritation and hardness.

[0105] (Evaluation of physical properties of twisted paper yarn 2: Tensile strength test) For each of the paper yarn twisted with mulberry-cupra core yarn obtained in Paper Yarn Twist Preparation Example 1 and the paper yarn twisted with Manila hemp-core yarn obtained in Paper Yarn Twist Preparation Comparative Example 1, samples were cut to 200 mm lengths and measured for tensile strength and elongation in accordance with JIS P8113 and JIS P8135, with a gripping distance of 100 mm and n = 10, and the average values were calculated. The measurement conditions were as is (dry conditions), and the samples were also immersed in purified water for 30 seconds and then the excess water was absorbed with blotting paper (wet conditions). The results are shown in Figure 8.

[0106] As is clear from Figure 8(a), the twisted paper yarn with kozo-cupra core yarn in Paper Yarn Twist Preparation Example 1 (hereinafter sometimes abbreviated as kozo thread in the figure) showed approximately twice the tensile strength of the twisted paper yarn with Manila hemp-no core yarn in Paper Yarn Twist Preparation Comparative Example 1 (hereinafter sometimes abbreviated as Manila hemp thread in the figure) under both dry and wet conditions. From this, it is presumed that the Manila hemp-core-free paper yarn twist of Comparative Example 1 for preparation of twisted paper yarn exhibits tensile strength only in the papermaking area because there is no core yarn, whereas the mulberry-cupra core paper yarn twist of Example 1 for preparation of twisted paper yarn exhibits particularly high tensile strength in the core yarn area because the core yarn area and the papermaking area are entangled and inseparable, forming a single unit. This suggests that the paper yarn twist made of mulberry-cupra core yarn to which the present invention is applied is unlikely to break even when pulled by the core yarn, and has excellent dimensional stability as no change in shape occurs due to misalignment between the fibers in the core yarn area and the papermaking area.

[0107] On the other hand, as is clear from Figure 8(b), the Manila hemp-core-free twisted paper yarn of Comparative Example 1 for Twisted Paper Yarn Preparation did not stretch as much as regular paper under dry conditions, but stretched by about four times under wet conditions, whereas the mulberry-cupra core twisted paper yarn of Example 1 for Twisted Paper Yarn Preparation had a relatively low elongation rate under both dry and wet conditions. This suggests that the paper yarn twist made of mulberry-cupra core yarn to which the present invention is applied is less likely to stretch even under wet conditions due to the core yarn, and therefore is less likely to lose its shape or stretch even when made into fabric and washed.

[0108] The physical properties of the woven fabric made of twisted paper yarn with mulberry-cupra core yarn obtained in Fabric Manufacturing Example 1, the woven fabric made of twisted Manila hemp-paper yarn without core yarn obtained in Fabric Manufacturing Comparative Example 1, and the woven fabric made of cotton yarn obtained in Fabric Manufacturing Comparative Example 2 were evaluated as follows.

[0109] (Fabric property evaluation 1: Appearance evaluation) The appearances of the woven fabric made of twisted paper yarn with mulberry-cupra core yarn in Fabric Production Example 1, the woven fabric made of twisted Manila hemp-paper yarn without core yarn in Fabric Production Comparative Example 1, and the cotton fabric in Fabric Production Comparative Example 2 were observed and evaluated. Photographs of the results are shown in Figure 9. As is clear from Figure 9, all of the fabrics were extremely beautiful in appearance, and it was difficult to choose between them.

[0110] (Fabric property evaluation 2: breathability test) The air permeability was measured by JIS L1096 Method A (Fragile method) for the paper yarn twisted fabric with mulberry-cupra core yarn of Fabric Production Example 1 (hereinafter sometimes abbreviated as mulberry yarn fabric in the figures), the Manila hemp-paper yarn twisted fabric without core yarn of Fabric Production Comparative Example 1 (hereinafter sometimes abbreviated as Manila hemp fabric in the figures), and the cotton fabric of Fabric Production Comparative Example 2 (hereinafter sometimes abbreviated as cotton yarn fabric in the figures). Measurements were made using a Frazier air permeability tester, with n=3. The air permeability was measured in units of 1 cm per second. 2 The airflow volume (ml) per unit of air permeability was measured and averaged, converted to 1 atmosphere and a temperature of 20°C, with a higher value indicating better breathability. The results are shown in Figure 10. As is clear from Figure 10, the fabric made of twisted paper yarn with mulberry-cupra core yarn in Fabric Production Example 1 and the fabric made of twisted Manila hemp-paper yarn without core yarn in Fabric Production Comparison Example 1 were approximately 3.5 times more breathable than the cotton fabric in Fabric Production Comparison Example 2. This suggests that when made into clothing, it releases heat so that it does not build up, and allows sweat to evaporate and escape easily, making it comfortable to wear.

[0111] (Fabric property evaluation 3: Stiffness test) The stiffness in the warp direction (warp direction) and weft direction (weft direction) was measured using the JIS L1096 Handle-O-Meter method for the paper yarn twisted fabric with mulberry-cupra core yarn of Fabric Production Example 1, the Manila hemp paper yarn twisted fabric without core yarn of Fabric Production Comparative Example 1, and the cotton fabric of Fabric Production Comparative Example 2. Measurements were made using a Handle-O-Meter (trade name, manufactured by Kumagai Riki Kogyo Co., Ltd.) with n=3. The stiffness was calculated as an average, with a smaller value indicating softer fabric. The results are shown in Figure 11. As is clear from FIG. 11, both the woven fabric of twisted paper yarn with mulberry-cupra core yarn in Fabric Production Example 1 and the woven fabric of twisted paper yarn without Manila hemp core yarn in Fabric Production Comparison 1 had extremely high bending resistance in the weft direction, exceeding the upper limit of measurement, whereas the cotton fabric in Fabric Production Comparison 2 had a relatively high bending resistance in the weft direction. However, the Manila hemp-no-core twisted paper yarn fabric of Comparative Fabric Production Example 1 suggests that the Manila hemp-no-core strip itself is stiff, which means that the twisted paper yarn and the resulting fabric are also stiff.On the other hand, the paper yarn twisted paper yarn fabric of Fabric Production Example 1 with mulberry-cupra core yarn was soft because the core yarn was soft and the mulberry fibers were entangled with a moderate amount of space between them, making it soft.

[0112] (Fabric property evaluation 4: Drape test) The drape properties of the woven fabrics, including the paper yarn twisted with mulberry-cupra core yarn in Fabric Production Example 1, the Manila hemp paper yarn twisted with no core yarn in Fabric Production Comparative Example 1, and the cotton fabric in Fabric Production Comparative Example 2, were measured using the JIS 1096 drape coefficient measurement. Measurements were performed using a drape tester, with n=2. Drape properties are a measure of the natural looseness of a woven fabric (i.e., a woven fabric), and are calculated as the average value of the drape coefficient (unitless), with the smaller the value, the softer the fabric. The results are shown in Figure 12. As is clear from Figure 12, the woven fabric of twisted paper yarn with mulberry-cupra core yarn in Fabric Manufacturing Example 1 and the woven fabric of twisted paper yarn without Manila hemp core yarn in Fabric Manufacturing Comparison Example 1 were shown to be stiffer and less likely to slacken than the cotton fabric in Fabric Manufacturing Comparison Example 2. This suggests that the paper yarn twisted fabric with a mulberry-cupra core yarn is somewhat soft and has the properties of cotton-thread fabric, while also possessing the properties of paper, such as being able to easily maintain its shape.

[0113] (Textile property evaluation 5: Water absorption test) The absorbency of the woven fabrics was measured according to JIS 1912 water absorption measurement for the paper yarn twisted fabric with mulberry-cupra core yarn of Fabric Manufacturing Example 1, the Manila hemp-paper yarn twisted fabric without core yarn of Fabric Manufacturing Comparative Example 1, and the cotton fabric of Fabric Manufacturing Comparative Example 2. The absorbency was measured as an average of n=5, with a larger value indicating a higher water absorption. The results are shown in Figure 13. As is clear from Figure 13, the paper yarn twisted fabric with mulberry-cupra core yarn in Fabric Manufacturing Example 1 and the Manila hemp-paper yarn twisted fabric without core yarn in Fabric Manufacturing Comparison Example 1 had higher absorption capacity than the cotton fabric in Fabric Manufacturing Comparison Example 2. This suggests that Manila hemp fabrics made from twisted paper yarn without a core have better water absorption than commonly used cotton fabrics, such as towel fabric, and are suitable for everyday items such as bath towels and sports towels, as well as various types of clothing such as sportswear.

[0114] (Fabric property evaluation 6: Dryness test) The dryness of the paper yarn twisted fabric with mulberry-cupra core yarn of Fabric Manufacturing Example 1, the Manila hemp-paper yarn twisted fabric without core yarn of Fabric Manufacturing Comparative Example 1, and the cotton fabric of Fabric Manufacturing Comparative Example 2 was measured as follows. Each fabric was cut into 5 cm square samples, which were immersed in purified water for 1 minute, then removed and measured as the moisture evaporation rate (moisture content) after 30 minutes using a halogen moisture meter set at 45°C. A higher dryness indicates easier drying. The results are shown in Figure 14. As is clear from Figure 14, the paper yarn twisted fabric with mulberry-cupra core yarn in Fabric Production Example 1 and the cotton fabric in Fabric Production Comparison 2 dried more easily than the Manila hemp-paper yarn twisted fabric without core yarn in Fabric Production Comparison 1. This suggests that the paper yarn twisted fabric with mulberry-cupra core yarn in Fabric Manufacturing Example 1 has better water absorption than cotton fabrics and dries just as quickly or more quickly, making it suitable for everyday items such as bath towels and sports towels, as well as various types of clothing such as sportswear, and is easy to absorb sweat and evaporate moisture, leaving it feeling smooth and comfortable against the skin.

[0115] (Textile property evaluation 7: Moisture absorption test) The moisture absorption was measured as follows for the paper yarn twisted fabric with mulberry-cupra core yarn of Fabric Production Example 1, the Manila hemp-paper yarn twisted fabric without core yarn of Fabric Production Comparative Example 1, and the cotton fabric of Fabric Production Comparative Example 2. Each fabric was cut into 10 cm square samples and placed on a stainless steel petri dish. The samples were left in a thermo-hygrostat chamber adjusted to a temperature of 30°C and a humidity of 90% RH, and their weights were measured every 30 minutes for up to 3 hours. The results are shown in Figure 15. As is clear from FIG. 15, the weight of each sample does not change significantly even under high temperature and humidity conditions, indicating that they are not easily affected by humidity. This suggests that the paper yarn twisted fabric made with mulberry-cupra core yarn in Fabric Manufacturing Example 1 has excellent water absorption and drying properties and is hardly affected by humidity, so it easily absorbs sweat, evaporates moisture easily, is less affected by humidity, and feels smooth against the skin.

[0116] The fabric made of twisted paper yarn with mulberry-cupra core yarn obtained in Fabric Production Example 1 and the fabric made of twisted Manila hemp-paper yarn without core yarn obtained in Fabric Production Comparison Example 1 were subjected to a sensory evaluation as follows to objectively evaluate ease of use, comfort, feel, etc.

[0117] (Sensory evaluation of textiles 1) A sensory test for texture was conducted on 42 random adult men and women (2 in their 20s, 6 in their 30s, 14 in their 40s, 14 in their 50s, and 6 in their 60s). The sensory evaluation involved placing the paper yarn twisted fabric with mulberry-cupra core yarn of Fabric Manufacturing Example 1 and the paper yarn twisted fabric with Manila hemp-no core yarn of Fabric Manufacturing Comparative Example 1 on a test stand, illuminating them with fluorescent light, with no time limit for touching them with their eyes open, at room temperature of 25°C. To objectively and fairly conduct the sensory evaluation, the subjects were asked to evaluate softness, weight, warmth, smoothness, moistness, formality, texture, and likes and dislikes on a 5-point SD scale, with "very good" being 5 points, "slightly good" being 4 points, "neither good nor bad" being 3 points, "slightly bad" being 2 points, and "very bad" being 1 point. Average values were calculated for each age group from their 20s to 60s. Figure 16(a) shows the results of weaving a paper yarn twist with mulberry-cupra core yarn in Fabric Manufacturing Example 1, and Figure 16(b) shows the results of weaving a paper yarn twist with Manila hemp-no core yarn in Fabric Manufacturing Comparison Example 1.

[0118] As is clear from Figures 16(a) and (b), the paper yarn twisted fabric with mulberry-cupra core yarn of Fabric Production Example 1 to which the present invention is applied is softer, and the younger the user, the lighter it feels, the smoother it is, the more moist it feels, and overall it feels good to the touch, and there is no preference regardless of age group, resulting in excellent sensory evaluation results overall.

[0119] (Example 2 of twisted paper yarn preparation) A paper mulberry-PET core yarn twisted paper yarn 10 was produced in the same manner as in Example 1 for preparing twisted paper yarn, except that a polyethylene terephthalate (PET) core yarn (made in Indonesia; 150 denier, 48 PET fibers twisted together, average fiber diameter 3.125 μm) was used as the core yarn 3. The twisted paper yarn was magnified and observed under incident light using a multipurpose optical microscope DM 4B / DFC450 (trade name, manufactured by Leica Microsystems). The results are shown in Figure 17(a).

[0120] (Paper yarn twist preparation example 3) A mulberry-rayon core paper yarn twisted material 10 was produced in the same manner as in Example 1 for preparing twisted paper yarn, except that a rayon core yarn (made in China; 300 denier, 50 rayon fiber strands twisted, average fiber diameter 6 μm) was used as the core yarn 3. It was then magnified and observed under incident light with a multipurpose optical microscope, as in Example 2 for preparing twisted paper yarn. The results are shown in Figure 17(b).

[0121] The appearance of the kozo-PET core paper yarn twisted material and the kozo-rayon core paper yarn twisted material of Twisted Paper Yarn Preparation Examples 2 and 3 was similar to that of the kozo-cupra core paper yarn twisted material of Twisted Paper Yarn Preparation Example 1. Furthermore, although not shown, the physical properties of these twisted paper yarns were equivalent to those of the kozo-cupra core paper yarn twisted material of Twisted Paper Yarn Preparation Example 1, and furthermore, the physical properties of the fabrics woven from these twisted paper yarns were equivalent to those of the fabrics of Fabric Production Example 1.

[0122] (Paper yarn twist preparation example 4) Three strands of the twisted paper yarn 10 obtained in Twisted Paper Yarn Preparation Example 1 were twisted in S-twist to produce a string of twisted paper yarn 10 with a twist count T per meter of 200. This string was observed under magnification with an optical microscope using incident light. The results are shown in Figure 18.

[0123] The paper yarn twisted with mulberry-cupra core yarn of paper yarn twisted example 4 was thicker because three strands were twisted together. Although not shown, the physical properties of this paper yarn twisted were equal to or better than those of the paper yarn twisted with mulberry-cupra core yarn of paper yarn twisted example 1, and the physical properties of the fabric woven from this paper yarn twisted were equal to or better than those of the fabric of fabric production example 1.

[0124] (Paper yarn twist preparation example 5) Strip-shaped tapes 2 were prepared with tape widths of 4 mm (same as in Example 1 of Twisted Paper Yarn Preparation), 6 mm, and 8 mm, and twisted to produce twisted paper yarns 10. Each was observed under magnification with an optical microscope using incident light. The results are shown in Figure 19. At this time, for the paper yarn twisted from mulberry-cupra core yarn obtained in paper yarn twist preparation example 5, the shortest distance to adjacent fibers at any given fiber location was taken as the inter-fiber distance, and the average inter-fiber distance at multiple locations was calculated, as shown in Figure 19. The maximum, minimum, and average values, as well as the significant difference between paper yarn twist preparation example 1 and paper yarn twist preparation reference example 1, are shown in Table 2. Note that a significant difference was determined using Student's t-test with p<0.05 being significant.

[0125] [Table 2] As is clear from Figure 19, the wider the strip tape 2, the larger the diameter of the twisted paper yarn. As is clear from Table 2, in Twisted Paper Yarn Preparation Example 5, the wider the tape, the smaller the inter-fiber distance, and the smaller the standard deviation, which was less variable. This demonstrates that tape-like construction allows for uniform and dense weaving. Furthermore, although not shown, the physical properties of these twisted paper yarns were equal to or better than those of the mulberry-cupra core paper yarn twisted paper yarn of Twisted Paper Yarn Preparation Example 1, and the physical properties of the fabrics woven from these twisted paper yarns were equal to or better than those of the fabrics of Fabric Production Example 1.

[0126] (Paper yarn twist preparation example 6: Weight ratio measurement test 1 of core yarn and mulberry fiber) Preparation of twisted paper yarn Prepared in Example 1 The weight ratio of the papermaking portion and the core yarn portion of the twisted paper yarn 10 was determined. First, 10 test pieces of twisted paper yarn of an appropriate length were left for 24 hours in the standard environment specified in JIS P8111 (temperature 23°C, humidity 50%RH), and then the initial weight of the 10 test pieces of twisted paper yarn was measured using a precision balance with a minimum sensitivity of 0.1 mg. Next, the mulberry fibers around the core thread 3 were carefully peeled off from the paper yarn twist 10 test piece, leaving only the core thread 3, and this was left for 12 hours, and the weight of the core thread 3 was measured in the same manner using a precision balance. The weight of paper mulberry fiber in 10 test pieces of twisted paper yarn can be calculated as an approximate value using the following arithmetic formula (1).

[0127] Weight of paper mulberry fiber in 10 test pieces of twisted paper yarn = (Initial weight of 10 test pieces of twisted paper yarn) - (Weight of core yarn 3) (1)

[0128] The weight measurements were as follows and calculated as follows: (1) 10 test pieces (approximately 1 m) of paper yarn twist obtained from a strip of tape 2 with a tape width of 4 mm The initial weight of the 10 test pieces of twisted paper yarn was 0.1671 g, and the weight of the core yarn 3 was 0.0757 g. From this, the weight of the mulberry fiber in the 10 test pieces of twisted paper yarn was calculated to be 0.1671 - 0.0757 = 0.0914 g. The weight ratio of the core yarn in the 10 test pieces of this twisted paper yarn was calculated to be 0.0757 / 0.1671 = approximately 45%, and the weight ratio of the paper mulberry fiber was calculated to be 0.0914 / 0.167 = approximately 55%. (2) 10 test pieces (approximately 1 m) of paper yarn twist obtained from a strip of tape 2 with a tape width of 8 mm The initial weight of the 10 twisted yarn test pieces was 0.1791 g, and the weight of the core yarn 3 was 0.0525 g. From this, the weight of the mulberry fiber in the 10 twisted paper yarn test pieces was calculated to be 0.1791 - 0.0525 = 0.1266 g. The weight ratio of the core yarn in the 10 test pieces of this twisted paper yarn was calculated to be 0.0525 / 0.1791 = approximately 30%, and the weight ratio of the paper mulberry fiber was calculated to be 0.1266 / 0.1791 = approximately 70%.

[0129] (Paper yarn twist preparation examples 6-1 and 6-2: Weight ratio measurement tests 2-1 and 2-2 of core yarn and mulberry fiber) A strip-shaped tape 2 was prepared in the same manner as in Twisted Paper Yarn Preparation Example 1, except that a rayon core yarn (50 fiber bundles, 40 denier) or a cupra fiber core yarn Bemberg (manufactured by Asahi Kasei Corporation; 70 cotton-derived cellulose fiber bundles, 19 denier) was used instead of the core yarn 3 in Twisted Paper Yarn Preparation Example 1, and then the twisted paper yarns 10 of Twisted Paper Yarn Preparation Examples 6-1 and 6-2 were produced. For the obtained paper yarn twisted products 10 of paper yarn twisted product preparation examples 6-1 and 6-2, the initial weight of the paper yarn twisted product 10 test piece and the weight of the core yarn 3 were measured in the same manner as in paper yarn twisted product preparation example 5. (1) Preparation of twisted paper yarn: 10 test pieces (approximately 1 m) of twisted paper yarn of Example 6-1 The initial weight of the 10 twisted paper yarn test pieces was 0.1440 g, and the weight of the core yarn 3 was 0.0531 g. From this, the weight ratio of the core yarn in the 10 twisted paper yarn test pieces was calculated to be approximately 40%, and the weight ratio of the mulberry fiber was calculated to be approximately 60%. (2) Preparation of twisted paper yarn: 10 test pieces (approximately 1 m) of twisted paper yarn of Example 6-2 The initial weight of the 10 twisted yarn test pieces was 0.2828 g, and the weight of the core yarn 3 was 0.0614 g. From this, the weight ratio of the core yarn in the 10 twisted paper yarn test pieces was calculated to be approximately 20%, and the weight ratio of the paper mulberry fiber was calculated to be approximately 80%.

[0130] From the above, the paper yarn twisted material to which the present invention is applied and the fabric made from it can be produced simply and easily with a high yield by a manufacturing method using the paper yarn twisted material manufacturing apparatus to which the present invention is applied, and the quality of the resulting fabric is superior to that of conventional fabrics. [Industrial Applicability]

[0131] The twisted paper yarn of the present invention and fabrics made from it can be widely used for clothing, such as fabrics and knitted fabrics for Western and Japanese clothing; clothing, such as Western clothing, sweaters, shirts, gowns, stoles, shawls, underwear, sportswear, and Japanese clothing; daily necessities, such as towels, handkerchiefs, and other personal items; and decorative fabrics, such as curtains, curtains, and decorative fabrics for dolls.

[0132] According to the twisted paper yarn manufacturing device of the present invention and the method for manufacturing twisted paper yarn using the same, twisted paper yarn can be manufactured simply and easily with good yield and high quality. [Explanation of symbols]

[0133] 2 is a belt-shaped tape, 2' is a smooth surface, 3 is a core yarn, 3a is a single fiber, 3b is a fiber bundle, 3c is a single-twist fiber yarn, 3d is a ply-twisted yarn, 3e is a yarn row, 4 is raw fiber for papermaking, 5 is a long side end, 10 is a paper yarn twist, 10a is a single-twisted paper yarn, 10b is a string, 11 is a screen, 12 is a slit, 12' is a slit end, 13 is a papermaking tool, 20 is a beating machine, 21 is a beating slurry, 22 is a beating roller, 23 is a beating tank, 30 is a defibrator, 31 is a defibrating slurry, 32 is a defibrating roller, 33 is a defibrating tank, 40 is a riffler, 41 is a stirred slurry, 42 is a riffler plate, 43 is a storage tank, 50 is a core yarn unwinding machine, 60 is a strip tape skiving machine, 61 is a fiber slurry, 62 is a mesh cylinder, 63 is a vat, 64 is a guide tube, 65 is a guide roller, 70 is a dryer, 71 is a drying drum, 72 and 73 are guide rollers, 80 is a strip tape winding machine, 81 is a winding roll, 90 is a bobbin, 100 is a paper yarn twisted product manufacturing device, 100A is a strip tape manufacturing device, 100B is a twisting device, Φ is the fiber diameter, φ is the fiber diameter, H is the thickness, W is the width, and aa is the longitudinal direction.

Claims

1. A papermaking band-shaped tape made from papermaking raw material fibers (limited to plant fibers, excluding animal fibers) that are naturally derived fibers or recycled material fibers, in which the papermaking raw material fibers are entangled together with a taut core thread near the center, and the long edge portions are uncut and untwisted yarns, A papermaking strip-shaped tape for paper yarn twists for textile applications, characterized in that the thickness is 10 to 100 μm, the fiber-to-fiber distance is the shortest distance to adjacent fibers at any one of the papermaking raw material fiber locations, the papermaking raw material fibers are entangled around the core yarn with an average gap of 200 μm or less as the average of the fiber-to-fiber distances at multiple locations, and the maximum gap is 450 μm, and the core yarn is arranged in the middle or center in the thickness direction.

2. 2. The paper belt tape according to claim 1, wherein the core yarn has gaps of 135 μm or less on average.

3. A paper yarn twisted product obtained by twisting the strip tape according to claim 1.

4. 4. The twisted paper yarn product according to claim 3, wherein the long side edges of the belt-shaped tape are left as they are after being made and are not cut off.

5. The core yarn is Fibers derived from natural sources, synthetic fibers derived from chemical synthesis, fibers derived from recycled materials, or fibers derived from biomaterials, made of at least one synthetic fiber selected from polyester, polyamide, polyacrylate, polyacrylonitrile, vinylon, polyolefin, polyvinyl chloride, polyvinylidene chloride, and polyurethane; made of at least one semi-synthetic fiber selected from acetate, triacetate, and promix; Made from at least one chemical fiber and / or regenerated fiber selected from viscose rayon, cuprammonium rayon, polynosic, lyocell, and insolubilized alginate fiber; and Made from at least any natural non-wood fiber selected from seed hair fibers selected from cotton and kapok, bast fibers selected from ramie, hemp, and kenaf, leaf fibers selected from Manila hemp (abaca) and Basho, and other plant fibers selected from bamboo, reed, papyrus, and rush; made from at least one animal fiber selected from wool, cashmere, silk, and camel hair; made of at least one inorganic fiber selected from glass fiber, alumina fiber, and metal fiber (stainless steel or copper); Made of carbon fiber; Or a blend of any of these 4. The twisted paper yarn according to claim 3,

6. The twisted paper yarn according to claim 3, characterized in that the core yarn is any one of: an untwisted single fiber; a single-twist fiber yarn in which the single fiber is twisted; a fiber bundle in which a plurality of fibers are bundled; a single-twist fiber yarn in which a plurality of the single-twist fiber yarns or the fiber bundles are twisted; and a yarn row in which a plurality of any of the above are arranged.

7. The twisted paper yarn according to claim 6, characterized in that the core yarn is a single core yarn arranged at the center of the strip-shaped tape, or a plurality of core yarns arranged so that their central axes are at the center of the strip-shaped tape.

8. 4. The twisted paper yarn according to claim 3, wherein the core yarn has a fineness of 75 to 600 denier.

9. 4. The twisted paper yarn product according to claim 3, wherein the strip-shaped tape has a width of 3 to 15 mm.

10. The twisted paper yarn according to claim 3, characterized in that it is a composite twisted paper yarn selected from a single twisted paper yarn in which a single strip-shaped tape is twisted; or a string in which a plurality of the single twisted paper yarns are twisted together, a rope in which a plurality of the strings are twisted together, a small rope in which a plurality of the ropes are twisted together, and a main rope in which any of the single twisted paper yarn, the string, the rope, and the small rope are twisted together.

11. The twisted paper yarn according to claim 10, characterized in that the single twisted paper yarn is S-twisted or Z-twisted, or the composite twisted paper yarn is any combination selected from S-twisted, Z-twisted, and two-ply twisted.

12. The raw fiber for papermaking is the naturally-derived fiber or the recycled material fiber, At least one wood fiber selected from broad-leaved trees such as beech, maple, chestnut, paulownia, birch, and / or elm, and soft-leaved trees such as cedar, pine, fir, cypress, and / or hemlock; At least one herbaceous bast fiber selected from paper mulberry, Mitsumata, gampi, mulberry, hemp, flax, ramie, kenaf, jute, and Philippine gampi (sarago), At least one leaf fiber selected from the group consisting of abaca, sisal, banana, pineapple, and banana; At least any other plant fiber selected from bamboo, rice straw, wheat straw, bagasse, esparto, reed, papyrus, and rush grass; At least one seed fiber selected from cotton, linter, kapok, coconut, and palm; pulp fibers selected from wood pulp and plant pulp; Powder-containing pulp fibers in which inorganic powder and / or organic powder are blended or mixed into the pulp fibers; A recycled fiber selected from the group consisting of recycled materials of any of the above fibers and recycled paper pulp made from recycled paper.

4. The twisted paper yarn according to claim 3, characterized in that the fiber is at least one selected from the following:

13. The twisted paper yarn according to claim 3, characterized in that the twist is a soft twist with a maximum number of twists T of 500, a medium twist with a number of twists T of more than 500 but less than 1000, or a hard twist with a number of twists T of at least 1000.

14. A fabric using the twisted paper yarn according to claim 3, characterized in that the fabric is a woven fabric using the twisted paper yarn as warp and / or weft.

15. 15. A paper yarn twisted product selected from the group consisting of fabric, clothing, footwear, bags, daily necessities, and decorative fabrics, using the fabric according to claim 14.

16. 10. A strip tape manufacturing apparatus for producing the strip tape described in claim 1, comprising: a core yarn unwinder; a storage tank for storing beaten and / or defibrated papermaking raw fiber in water; a mesh screen covering a slit of tape width for entangling the papermaking raw fiber supplied from the storage tank with the core yarn while positioning the taut core yarn toward the center and filtering it into a papermaking strip tape; and a dryer for drying the strip tape filtered together with the core yarn while feeding it out.

17. 10. A paper yarn twist manufacturing device for manufacturing the twisted paper yarn described in claim 3, comprising: a core yarn unwinder; a storage tank for storing beaten and / or defibrated papermaking raw fiber in water; a mesh screen covering a slit of the tape width for entangling the papermaking raw fiber supplied from the storage tank with the core yarn while positioning the taut core yarn toward the center and filtering it into a papermaking strip tape; a dryer for drying the strip tape filtered together with the core yarn while sending it out; a twisting machine for twisting the strip tape together with the core yarn to form a twisted paper yarn; and a winding machine for winding up the twisted paper yarn.

18. A method for manufacturing a strip tape according to claim 1, characterized in that a core yarn is unwound and positioned toward the center while raw papermaking fibers that have been beaten and / or defibrated in water are entangled with the core yarn and filtered into a papermaking strip tape, and the strip tape filtered together with the core yarn is dried while being fed out.

19. A method for producing twisted paper yarns according to claim 3, characterized in that a core yarn is unwound and the tensioned core yarn is positioned toward the center, while raw papermaking fibers that have been beaten and / or defibrated in water are entangled with the core yarn and filtered into a papermaking belt-shaped tape, the belt-shaped tape filtered together with the core yarn is sent out and dried, and then the belt-shaped tape together with the core yarn is twisted into a twisted paper yarn.

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