Sheet-like material

Abstract

To provide a sheet-like material that can be hand-cut into neat cut area along the thread in the warp direction, and that does not require post-weaving processes and can be manufactured at extremely low cost.SOLUTION: Provided is a sheet-like material in which thread-lines composed mainly of fibers having an average fiber length of 10 to 100 mm are bonded to each other with a resin composition in a state where the thread-lines are aligned in one direction in a row. The sheet-like material can be obtained by impregnating thread-lines composed mainly of fibers selected from, for example, polyester fiber or cellulose fiber with resin all at once with a slasher sizing machine in a state where 2,000 to 20,000 of the thread-lines are aligned, followed by drying with a cylinder dryer.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a sheet-like material that is easily torn by hand in the longitudinal direction. [Background technology]

[0002] As a conventional fabric that is easy to tear by hand, a woven fabric used for adhesive tapes for packaging and masking is well known. This fabric uses low-strength yarns for the warp and / or weft, so that the fabric is easily torn along the non-low-strength yarn. As an example of such a fabric, a woven fabric has been proposed in which the warp is a flat yarn and the weft is a composite false-twisted yarn or a partially fused composite false-twisted yarn having a larger fineness than the warp, as a woven base fabric for adhesive tapes that have excellent hand-tearability, a clean cut edge, and are less likely to cause hook cracks (Patent Document 1). In addition, as an example of a woven fabric suitable for packaging materials, covering materials, etc., a woven fabric has been proposed in which a heat-sealed yarn is used for the weft, and the intersection of the warp and weft is fused and fixed by heat during dyeing processing, so that the woven fabric has excellent hand-tearability, no fraying occurs at the cut edge after tearing, and a clean cut edge is produced (Patent Document 2).

[0003] When looking at the cut surfaces of these hand-torn fabrics, the cut threads stick out from the cut surface, making the cut edges look bad, and because a lot of force is required to cut the threads, the cut edges are wavy and stretched, making them less than beautiful. In addition, these techniques require the use of special threads at least for the weft so that the fabric can be torn by hand in the warp direction, and they also require finishing processes after the fabric has been produced, which creates the problem of high manufacturing costs. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 11-61592 [Patent Document 2] JP 2010-281004 A Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been devised to solve the problems of the prior art described above, and its object is to provide a sheet-like material that can be cut by hand along the warp yarns with clean cut edges, does not require any processes after weaving, and can be produced at extremely low cost. [Means for solving the problem]

[0006] As a result of intensive research into achieving the above-mentioned object, the inventors have discovered that, rather than weaving fabric using low-strength yarns, it is possible to provide a hand-tearable sheet with clean cut edges by lining up yarns in one direction and bonding adjacent yarns together, thereby allowing the adhesion between the yarns to peel off when the fabric is torn by hand, thereby overcoming the conventional problem of cut yarns remaining at the cut edges, which is typical of woven fabrics, and thus leading to the completion of the present invention.

[0007] That is, the present invention has been completed based on the above findings, and has the following features (1) to (7). (1) A sheet-like object, characterized in that threads composed mainly of fibers having an average fiber length of 10 to 100 mm are aligned in one direction and bonded to each other with a resin composition. (2) A sheet-like material according to (1), characterized in that the yarn is mainly composed of a fiber selected from vegetable fibers such as cotton and hemp, and regenerated fibers such as rayon, polynosic, cupra, and lyocell. (3) The sheet-like material according to (1), characterized in that the yarn is mainly composed of a fiber selected from the group consisting of polyethylene terephthalate fiber, polybutylene terephthalate fiber, polytrimethylene terephthalate fiber, and polylactic acid fiber. (4) A sheet-like material according to any one of (1) to (3), characterized in that the resin composition contains at least one selected from the group consisting of polyvinyl alcohol, acrylic adhesives, starch, modified starch, carboxymethyl cellulose, and corn starch as a main component. (5) The sheet-like material according to any one of (1) to (4), characterized in that the tear strength in the transverse direction of the sheet is 0.2 to 4.5 N, as determined by JIS L1096 C method (trabezoid method). (6) A method for producing a sheet-like product, comprising the steps of: aligning 2,000 to 20,000 threads each composed primarily of a fiber selected from polyester fiber or cellulose fiber; simultaneously impregnating the threads with resin in a slasher sizing machine; and drying the threads in a cylinder dryer. (7) A textile product comprising only one layer of the sheet-like material according to any one of (1) to (5). Effect of the Invention

[0008] The sheet-like material of the present invention can be easily cut by hand in the vertical direction, and the cut surface can be cleanly cut as if it were cut with a cutter. In addition, since the width to be cut can be set for each thread, it is possible to make a tape by precisely controlling the cut width. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is an explanatory diagram of the structure of the sheet-like material of the present invention. [Diagram 2] FIG. 2 shows a plan view of an example of the sheet-like material of the present invention after being torn by hand. [Diagram 3] FIG. 3 shows a plan view of an example of a conventional hand-torn woven fabric after it has been hand-torn. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] An embodiment of the sheet-like material of the present invention will be described in detail below. The sheet-like material of the present invention is characterized in that adjacent threads are bonded to each other by a resin composition in a state where threads are aligned in one direction. Specifically, the sheet-like material of the present invention is a sheet-like material in which threads are not stacked in the thickness direction as shown in FIG. 1, and threads extending in one direction are arranged in parallel in a line in the horizontal direction and bonded to each other with a resin to form a layer, and does not include a sheet-like material in which threads extending in one direction are stacked in a bundle or thickness direction and bonded. In the sheet-like material of the present invention, the threads are not stacked in the thickness direction as described above, and adjacent threads are bonded to each other with a resin, so that only the joint surfaces between adjacent threads are peeled off, and it becomes possible to easily and neatly tear the sheet vertically. The state in which threads are aligned in one direction is obtained by, for example, aligning a plurality of threads drawn out from a creel and winding them on a beam, so that the threads are aligned in the longitudinal direction and arranged in parallel in the horizontal direction. In the present invention, it is preferable that 2,000 to 20,000 of these parallel yarns are arranged in parallel in the horizontal direction, and then impregnated with a resin to bond adjacent yarns together to form a sheet.

[0011] As described above, the sheet-like material of the present invention is composed of only a single layer of yarns aligned in the warp direction, and does not have weft yarns as in woven fabrics, so when it is torn vertically by hand, it is torn along the yarns and no pieces of weft yarns remain on the cut surface, resulting in a clean cut surface as shown in Figure 2. On the other hand, in conventional hand-tearable woven fabrics, the warp yarns are connected by the weft yarns, so when it is torn by hand, torn yarns stick out from the yarns, as shown in Figure 3, resulting in an unattractive cut surface.

[0012] The yarn is mainly composed of fibers having an average fiber length of 10 to 100 mm. Here, the main component refers to a component that occupies 50% by weight or more, preferably 70% by weight or more, more preferably 80% by weight or more, and even more preferably 90% by weight or more of the entire yarn. Examples of fibers having an average fiber length of 10 to 100 mm include natural fibers such as cellulose fibers such as cotton and hemp, animal fibers such as silk and wool, polyester fibers, acrylic fibers, acrylic fibers, nylon fibers, vinylon fibers, polypropylene fibers, polyvinyl chloride fibers, polyethylene fibers, vinylidene fibers, polyurethane fibers, aramid fibers, polyarylate fibers, poly-paraphenylene benzobisoxazole fibers, ethylene vinyl alcohol fibers, acrylate fibers, synthetic fibers such as polylactic acid, semi-synthetic fibers such as acetate, triacetate, and promix, regenerated fibers (cellulose fibers) such as rayon, polynosic, cupra, and lyocell, and chemical fibers such as inorganic fibers such as glass fibers, metal fibers, and carbon fibers. These fibers may be used alone or in combination of two or more kinds.

[0013] Among the above fibers, cellulose fibers or polyester fibers are preferably used. Cellulose fibers are preferred because they have excellent moisture absorption and release properties, are easily available, and are relatively inexpensive. The cellulose fibers are preferably selected from any of vegetable fibers such as cotton and hemp, and regenerated fibers such as rayon, polynosic, cupra, and lyocell, and cotton is particularly preferred. Polyester fibers are preferred because they are strong, easy to dye, inexpensive, and have stable quality. The polyester fibers are preferably selected from any of polyethylene terephthalate fibers, polybutylene terephthalate fibers, polytrimethylene terephthalate fibers, and polylactic acid fibers, and polyethylene terephthalate fibers are particularly preferred.

[0014] In order for the sheet-like material of the present invention to have sufficient strength, the fiber length of the yarns used (effective fiber length in the case of natural fibers) must be 10 to 100 mm. It is preferably 20 to 60 mm, and more preferably 25 to 50 mm. If the fiber length is less than the above range, the sheet cannot be neatly torn vertically along the warp yarns and is likely to tear diagonally. If the fiber length exceeds the above range, spinning becomes difficult and the adhesion between the yarns is likely to decrease.

[0015] The number of fluffs having a length of 1 mm or more present on the yarn surface is preferably 300 to 2000 per 10 m of yarn length, more preferably 500 to 1600. By setting the number of fluffs within this range, the resin between the yarns and the fluff become entangled, and a practical level of adhesive strength can be obtained. If the number of fluffs having a length of 1 mm or more per 10 m of yarn length is less than the above range, the adhesive strength will be low and the yarn will be prone to tearing when not needed, and if the number of fluffs has exceeded the above range, the strength of the yarn itself may be easily reduced. The number of fluffs having a length of 3 mm or more present on the yarn surface is preferably 10 to 150 per 10 m of yarn length.

[0016] The yarn using the above-mentioned fiber is preferably a spun yarn having fluff. If the yarn is a filament yarn, it may be difficult to give the completed sheet-like product sufficient strength for practical use. However, if it is a spun yarn, it may be a long and short composite yarn blended with a filament. Two or more of these yarns may be blended or twisted. In addition, these yarns may be single yarns, two-ply yarns, three-ply yarns, or four or more yarns twisted together. The total fineness of the yarn is not particularly limited, but is usually 5 to 240, preferably 7 to 200, more preferably 7 to 100, and even more preferably 9 to 80 in English number conversion. In addition, the twist coefficient of the spun yarn is preferably 2.8 to 5.5. If the twist coefficient is less than 2.8, the strength of the yarn is likely to decrease, and if it exceeds 5.5, the adhesive strength between the yarns is likely to decrease.

[0017] The sheet-like material of the present invention is obtained by lining up the above-mentioned yarns in one direction, and then bonding adjacent yarns to each other to form an integrated sheet. As a method for lining up the yarns in one direction, there is a method in which 300 to 1000 spun yarns are placed on a creel, and the yarns are lined up in one direction using a warper, impregnated with resin, and wound up on a warping beam. In addition, a method can be adopted in which several to ten warping beams that have not been impregnated with resin are aligned, and several thousand (for example, 2000 to 20,000) yarns are pulled out from each beam at the same time, and the resulting yarns are further aligned in one direction in one line, and then impregnated with resin at the same time. This method is preferable in that a sheet with a large area can be efficiently produced.

[0018] The above-mentioned sheet-like filaments can be impregnated with a resin through a process of impregnating the filaments with a resin liquid, a dehydration process, and a drying process. Each process in one example will be described below.

[0019] As a method of impregnating the yarn with the resin, a method of aligning the yarn in one direction and forming a sheet and impregnating the yarn with the resin liquid is preferable. By doing so, the yarn can be uniformly impregnated with the resin without uneven tension and between the yarns. This makes it possible to produce a uniform and strong sheet. To impregnate the yarn with the resin, a machine that has been conventionally used to bring the yarn into contact with the size liquid during sizing can be used. As such a machine, for example, a slasher sizer, a warp sizer, a roller sizer, a spray sizer, or the like can be used, but it is preferable to use a slasher sizer or a warp sizer to obtain a sheet with a uniform surface. A slasher sizer is particularly preferable. The yarn impregnated with the resin liquid is then subjected to a dehydration process. The dehydration method is not particularly limited, and air dehydration, centrifugal dehydration, mangle dehydration, etc. can be used.

[0020] The dehydrated yarn is then subjected to a drying step. As a drying method, cylinder drying, hot air drying, high-frequency dielectric heating, natural drying, and other methods can be adopted, but cylinder drying is preferred. Cylinder drying can produce a sheet with a smooth surface and uniform thickness. The drying temperature and drying time vary depending on the drying method and type of yarn, but are, for example, 80 to 140°C for 2 to 120 minutes for hot air drying and 80 to 120°C for 0.5 to 3 minutes for cylinder drying. In this manner, the sheet-like product of the present invention can be obtained.

[0021] The reason why sizing is performed on normal woven fabrics is to make the warp threads resistant to external forces such as large tension and friction caused by the movement of the loom during weaving. In addition, it is usually necessary to be able to easily remove the sizing agent after weaving, and therefore the sizing agent is also required to have removability by scouring. In contrast, since the sheet-like material of the present invention is not woven, the resin composition for bonding the threads together is not necessarily required to improve the fluff suppression, conjugation force, and smoothness. Therefore, in the present invention, it is called a resin composition rather than a sizing agent. However, there is no problem in using a normal warp sizing agent as the resin composition in the present invention as long as it has a sufficient adhesive effect.

[0022] The resin composition used in the present invention may be polyvinyl alcohol, acrylic acid ester, starch, vinyl acetate, ethylene-vinyl acetate copolymer (EVA), water-soluble cellulose compounds such as methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, and carboxymethyl cellulose, acrylic, polyester, polyurethane, polyolefin, and epoxy resin. Examples of the starch include raw starches such as corn starch, wheat starch, potato starch, tapioca starch, rice starch, and sweet potato starch, and processed starches such as pregelatinized starch, oxidized starch, esterified starch, etherified starch, grafted starch, and carboxymethylated starch. When the main fiber of the yarn is cellulose fiber, it is preferable to use at least one of polyvinyl alcohol, starch, and carboxymethyl cellulose as the main component. When the main fiber of the yarn is polyester fiber, it is preferable to use at least one of polyvinyl alcohol, vinyl acetate, EVA, and acrylic acid ester as the main component. In the present invention, the main component refers to a component that accounts for 50% by weight or more of the resin composition that is attached to a sheet-like material after being attached to unidirectionally aligned yarns and the solvent has been removed.

[0023] A particularly preferred resin composition for use in the present invention is polyvinyl alcohol. By incorporating polyvinyl alcohol, the adhesiveness between adjacent yarns can be increased. In addition, the strength and cohesive force of the yarns can be improved. As the polyvinyl alcohol, a known one used in conventional textile sizing agents can be used.

[0024] The average saponification degree of the polyvinyl alcohol is usually 60 to 99 mol%, preferably 65 to 99 mol%, and particularly preferably 70 to 90 mol%. If the average saponification degree is too low, the viscosity of the resin liquid will be low and the adhesion rate to the fibers will tend to decrease, while if the average saponification degree is too high, the viscosity of the paste will be high and the adhesion to the fibers will be unstable, which will tend to deteriorate the workability. The average saponification degree is a value measured in accordance with JIS K 6726 3.5. The average polymerization degree of the polyvinyl alcohol is usually 100 to 6000, preferably 200 to 5000, and particularly preferably 300 to 4500. If the average polymerization degree is too low, the adhesive force to the fibers will tend to be insufficient, while if the average polymerization degree is too high, the viscosity of the paste when made into a paste will tend to increase and the workability will tend to deteriorate. The average polymerization degree is a value measured in accordance with JIS K 6726 3.7. The polyvinyl alcohol may be either unmodified or modified, and two or more types of polyvinyl alcohol having different modified species, amounts of modification, average degrees of saponification, and average degrees of polymerization may be used in combination.

[0025] As the polyvinyl alcohol, it is preferable to use a liquid polyvinyl alcohol obtained by dissolving a solid polyvinyl alcohol in water, since it can be directly blended into the paste liquid, but a solid polyvinyl alcohol can also be used. The blending ratio of polyvinyl alcohol in the nonvolatile content is usually 0.1 to 99.999% by weight, preferably 10 to 99.99% by weight, and more preferably 30 to 99.9% by weight, as the nonvolatile content.

[0026] In addition, the resin composition may contain additives that are generally incorporated in textile pastes, such as smoothing agents, surfactants, defoamers, antistatic agents, preservatives, and antifungal agents, within the scope of not impairing the effects of the present invention. These may be used alone or in combination of two or more. The resin composition is preferably dissolved in a solvent and used as a resin liquid. The solvent is usually water, but a lower alcohol having 1 to 4 carbon atoms, such as methanol, ethanol, and propanol, may be used as necessary. These may be used alone or in combination of two or more.

[0027] The method for preparing the resin liquid is not particularly limited, and a known method can be adopted. For example, the resin liquid can be obtained by blending the solvent and the resin composition, stirring with a mixer or the like, and heating as necessary. In addition, the resin composition may be prepared by mixing the above-mentioned components in advance to form a single agent and blending it with the solvent, or each component may be blended individually in the solvent and dissolved.

[0028] When a liquid resin composition is used, the temperature of the resin liquid during the above preparation is usually 60° C. or less, preferably 15 to 50° C., and more preferably 20 to 45° C. When a solid paste is used, it is preferable to disperse the components of the paste for fibers in a solvent, and then heat and stir the mixture at 80 to 95° C. for 30 to 60 minutes.

[0029] The resin adhesion rate in the sheet-like material of the present invention is not particularly limited since it varies depending on the type and thickness of the thread, but is usually 0.1 to 80% by weight, preferably 1.0 to 50% by weight, and more preferably 5.0 to 30% by weight. If the adhesion rate is too low, the adhesive strength between the threads tends to be insufficient, and if the adhesion rate is too high, the sheet-like material becomes too hard and its hand-cuttability decreases. The "adhesion rate" refers to the ratio of the weight of the resin composition attached to the threads to the weight of the threads before the resin is applied.

[0030] The sheet-like material of the present invention is characterized by being easily torn by hand along the yarns as described above. "Easy to tear by hand" means that an adult male can easily tear it by hand and that the cut surface is clean along the yarns. This does not include those that tear diagonally not along the yarns or tear with a hook. Those that require a large force to tear by hand or tear when not needed are unsuitable. In order to have such performance, the tear strength in the transverse direction of the sheet-like material by the trabezoid method is preferably 0.1 to 20.0 N, more preferably 0.2 to 10.0 N, and even more preferably 0.2 to 4.5 N. In addition, the tensile strength in the warp direction (direction along the yarns) by the strip method is preferably 0.5 to 200 N calculated per yarn. More preferably, it is 1.0 N or more, and even more preferably 3.0 N or more. If the tear strength in the transverse direction and the tensile strength per warp yarn are within the above ranges, it becomes possible to easily and cleanly tear the sheet-like material by hand. The sheet-like material of the present invention is not woven using low-strength yarns as described above, but is made by lining up the yarns in one direction and bonding adjacent yarns together, thereby achieving tear strength in the weft direction and tensile strength per warp yarn in this range, and the material is extremely easy to cut by hand.

[0031] The sheet-like material of the present invention may be attached with paper or nonwoven fabric to improve the design, increase the thickness, or adjust the tear strength. The sheet-like material of the present invention may be used for various construction materials such as wallpaper, ceiling materials, and toys and models by applying an adhesive or attaching an adhesive sheet to the back side of the sheet-like material of the present invention. The sheet-like material of the present invention may be torn into tape-like pieces and used as various covering materials, and various uses are envisioned. In these textile products, the sheet-like material of the present invention is preferably used in only one layer in order to fully exhibit its excellent hand-tearability. EXAMPLES

[0032] Next, the effects of the present invention will be described with reference to the following examples, but the present invention is not limited to these. The performance evaluations in the examples and comparative examples were carried out by the following methods.

[0033] <Single fiber fineness> For chemical fibers, the single fiber fineness was calculated based on JIS L1015 8.5.1 Correct fineness A method. For natural fibers, the single fiber fineness was calculated based on JIS L1019 7.4.2 Sorter method.

[0034] <Fiber length> The fiber length of chemical fibers was calculated based on JIS L1015 8.4.1 Staple diagram method (Method A) and the fiber length of natural fibers was calculated based on JIS L1019 7.2.1 Double sorter method (Method A).

[0035] <English number> The apparent cotton count was measured in accordance with JIS L 1095 9.4.2, and this was taken as the English count.

[0036] <Fiber blend ratio> Measurement was performed in accordance with JIS L1030-2 5.9.2 (correct mixing ratio).

[0037] <Tensile strength of yarn> The tensile strength of the single fiber was determined according to JIS L1015 8.7.

[0038] <Number of fluffs in spun yarn> The number of fluffs of the spun yarn was measured using an F-index tester manufactured by Shikibo Co., Ltd. The yarn length was 10 m, and the number of fluffs of 1 mm or more and the number of fluffs of 3 mm or more were measured.

[0039] <Twist coefficient of spun yarn> The number of twists was determined according to JIS L1095 9.15.1 Method A, and the twist factor K was calculated according to the following formula. Twist factor K=[T] / [NE] 1 / 2 (In the above formula, [T] is the number of twists (turns / 2.54 cm), and [NE] is the English yarn count.)

[0040] <Tear strength in the transverse direction of the sheet-like material> The tear strength of the sheet-like material in the transverse direction (the direction in which the material is torn by hand along the yarn) was determined using JIS L1096 C method (trabezoid method).

[0041] <Tensile strength in the warp direction of the sheet-like material> The tensile strength in the longitudinal direction (the direction of pulling along the yarn) was measured according to JIS L1096 Method A (strip method), and then divided by the number of yarns present within the gripping width of the measurement sample to calculate the tensile strength per yarn.

[0042] <Resin adhesion amount> The completed sheet-like material was cut into a square of 10.0 cm long x 10.0 cm long, dried in a thermostatic box at 120°C for 3 hours, then placed in a weighing bottle and cooled to room temperature in a desiccator containing silica gel, and then weighed together with the weighing bottle to measure the bone dry weight A of the sheet-like material. Thereafter, the resin components were removed and the material was washed, and then the same bone drying treatment as above was carried out, and the bone dry weight B of the yarn from which the resin components had been removed was measured, and the amount of resin attached was calculated by the following formula. Resin adhesion amount (wt%) = (AB) / A x 100 In this embodiment, the removal process was carried out by the refining process described below, but depending on the type of resin, the resin may be removed by an appropriate method such as enzyme treatment or solvent treatment. Scouring: Immerse in an aqueous solution of 2g / L caustic soda and 1g / L nonionic surfactant (nonionic HC) at a bath ratio of 1:100 while stirring at 70°C for 1 hour, then wash with ion-exchanged water. All threads and fibers decomposed by the scour are collected in a filter and the total fiber weight is measured.

[0043] Example 1 100% American cotton (SPEMA, effective fiber length 35mm, single fiber fineness 1.5dtex) was used, and after blending and beating using an OHARA cotton blending machine, carded slivers were made using an Ishikawa Seisakusho carding machine. After being combed, the cotton was passed through a Hara Loom Works draw frame twice to produce a sliver of 210 grains / 6yd (yards). It was then passed through a Toyota Automatic Loom Works roving frame to produce a roving yarn with a roving yarn grain of 60 grains / 15yd. Next, the roving yarn was subjected to a draft of about 33 times in a spinning frame to produce a spun yarn with an English count of 50 / 1 (50-count single yarn) (twist factor 4.1 twists / inch). The tenacity of this spun yarn was 191.2gf, with 1055 pieces of hair over 1mm and 56 pieces of hair over 3mm.

[0044] This spun yarn was loaded onto a Tsudakoma Corp. warping machine TW1000S, and 590 yarns x 350 yds of warping length were wound up onto a warping (rough winding) beam. A total of 16 beams were produced in the same manner. Next, 16 of these beams were stacked and loaded onto a Tsudakoma Corp. sizing machine HS20, and immersed in a resin solution (temperature 50°C) with the following formulation. The resin-coated warp sheet was dried in a cylinder without being divided (cylinder temperature 130°C), and the adjacent 9440 yarns were wound into a roll shape in the sheet-like state at the winding section with the yarns bonded together. The finished sheet had a width of 1700 mm and a density of 141 yarns / inch (2.54 cm). Resin liquid: JETSIZE No. 200CA (PVA 98% by weight) manufactured by Mizobata Chemical Co., Ltd., concentration 14% sol. (% solution aqueous solution), preservative and antifungal agent (Courtside D2) manufactured by Osaka Gas Chemical Co., Ltd., concentration 0.05% sol.

[0045] The amount of resin attached to the finished sheet was 27.2% by weight. The sheet had good hand tearability in the warp direction. Specifically, the transverse tear strength (the direction in which the filaments are pulled apart) of the sheet was measured and found to be 0.504 N. The tensile strength in the warp direction was 3.28 N per filament.

[0046] Example 2 A spun yarn with a British cotton count of 10 and a twist factor of 4.1 was obtained by using 100% by weight of polyethylene terephthalate fiber with a 1.3 decitex and a cut length of 38 mm through a conventional spinning process. The tenacity of this spun yarn was 2363 gf, the number of fluffs of 1 mm or more was 1520, and the number of fluffs of 3 mm or more was 103. This spun yarn was set on a warping machine TW1000S manufactured by Tsudakoma Kogyo Co., Ltd., and 630 yarns x 150 yds of warping length were wound up on a warping beam. A total of 10 pieces were produced in the same manner. Next, 10 warped beams were stacked and set on a sizing machine HS20 manufactured by Tsudakoma Kogyo Co., Ltd., and immersed in a resin solution (temperature 90°C) with the following formulation. After that, the yarn was dried at 115°C in a cylinder drying section without being divided, and the adjacent 6300 yarns were wound up in a sheet-like form in the winding section into a roll type in a state where they were bonded to each other. The completed sheet had a width of 1700 mm and a density of 94 threads / inch. The resin adhesion amount of the completed sheet was 22.1%. Resin liquid: 1670 manufactured by Mizobata Chemical Co., Ltd. (PVA: starch: acrylic resin, etc. = 75% by weight: 10% by weight: 15% by weight), concentration 10.1% by weight sol.

[0047] The sheet-like material had good hand tearability in the warp direction. Specifically, the transverse tear strength (the direction in which the filaments are pulled apart) of the sheet-like material was measured and found to be 2.381 N. The tensile strength in the warp direction was 34.99 N per filament.

[0048] Example 3 A VARDHMANN (Republic of India) British count 30 / 1 yarn made of 100% organic cotton (effective fiber length 31.5 mm) was used. The tenacity of this spun yarn was 458 gf, with 982 pieces of fuzz over 1 mm and 65 pieces of fuzz over 3 mm. The yarn was set on a Tsudakoma Industrial Co., Ltd. warping machine TW1000S, and 630 yarns x 300 yds of warping length were wound up on a warping beam. A total of 10 pieces were made in the same manner. Next, 10 warped beams were stacked and set on a Tsudakoma Industrial Co., Ltd. HS-20 sizing machine, and immersed in a resin solution at a temperature of 50°C. The yarn was dried at 130°C in a cylinder drying section without being divided, and the adjacent 6300 yarns were wound up in a sheet shape in the winding section with the yarns bonded to each other. The finished sheet had a width of 1700 mm and a density of 94 yarns / inch. Resin liquid: JETSIZE No. 200CA (PVA 98% by weight) manufactured by Mizobata Chemical Co., Ltd., concentration 14% sol., preservative and antifungal agent (Courtside D2) manufactured by Osaka Gas Chemical Co., Ltd., concentration 0.05% sol. The resin adhesion of the finished sheet was 25.17% by weight.

[0049] The sheet-like material had good hand tearability in the longitudinal direction. Specifically, the transverse tear strength (the direction in which the filaments are pulled apart) of the sheet-like material was measured and found to be 1.385 N. The tensile strength in the warp direction was 22.99 N per filament. [Industrial Applicability]

[0050] The sheet-like material of the present invention can be hand-cut along the warp yarns to create a clean cut, and unlike conventional hand-torn woven fabrics, does not require any steps after weaving and can be produced at extremely low cost, making it extremely useful in the industry.

Claims

1. A sheet-like material in which yarns composed mainly of fibers having an average fiber length of 10 to 100 mm are aligned in one direction and bonded to each other with a resin composition, the sheet-like material having a tear strength of 0.2 to 4.5 N in the transverse direction according to JIS L1096 C method (trabezoid method) (excluding the case where the yarns are bicomponent fibers having a core-sheath structure).

2. 2. The sheet-like material according to claim 1, wherein the yarn is mainly composed of a fiber selected from the group consisting of vegetable fibers such as cotton and hemp, and regenerated fibers such as rayon, polynosic, cupra and lyocell.

3. 2. The sheet-like material according to claim 1, wherein the yarn is mainly composed of a fiber selected from the group consisting of polyethylene terephthalate fiber, polybutylene terephthalate fiber, polytrimethylene terephthalate fiber, and polylactic acid fiber.

4. The sheet-like material according to any one of claims 1 to 3, characterized in that the resin composition contains at least one selected from the group consisting of polyvinyl alcohol, acrylic paste, starch, modified starch, carboxymethyl cellulose, and corn starch as a main component.

5. A textile product comprising only one layer of the sheet material according to any one of claims 1 to 4.

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