Wadding and textile product

Abstract

To provide a wadding capable of maintaining an excellent deodorant property even after receiving external force such as compression through repeated use or after repeated washing, composed of bundled textured yarn to exhibit the effective deodorant property and a comfortable cushioning property, and a textile product made from the same.SOLUTION: A padding includes textured yarn made of a fiber A and a fiber B longer than the fiber A which are integrated. At least the fiber B contains a deodorant fiber.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a filling and to a textile product comprising said filling. [Background technology]

[0002] Materials used for stuffing in clothing, bedding, and the like include materials made of natural fibers such as animal fibers and plant fibers, and materials made of synthetic fibers such as synthetic cotton.

[0003] Natural fibers have various functions such as moisture absorption and heat generation, which are obtained from their complex structure and inherent properties, but because they are natural materials, there is an issue of supply stability. In addition, because natural fibers themselves are short fibers, continuous functional processing that is applied to fibrous materials is difficult, and it has sometimes been difficult to impart desired additional functions required for various applications.

[0004] On the other hand, synthetic fiber materials have come to be widely used as stuffing for clothing, bedding, etc., due to their appealing features of functionality and stable supply, and it is easy to impart various functions to the fibers through material selection and post-processing.

[0005] Regarding such synthetic fiber stuffing materials, in addition to improving the basic properties of stuffing such as heat retention and bulkiness, there is a growing need for materials that have functions unique to synthetic fibers, such as easy washability and deodorizing properties.

[0006] Its basic characteristic as a stuffing material is bulkiness, and for the purpose of reproducing the structure of a stuffing material made of feathers, which are a natural heat-retaining material, Patent Document 1 proposes a stuffing material using mixed fiber entangled yarn obtained by air entangling synthetic fibers, and similarly, Patent Document 2 proposes a bulky yarn with a swirl processability obtained by using a fluid processing nozzle to separate and entangle an air flow and a yarn outside the nozzle. In such stuffing materials made of synthetic fibers using bulky processed yarns, it is possible to impart functionality by post-processing, but as for deodorizing properties, it is common to impart deodorizing functions by post-processing the woven or knitted fabric that serves as the side fabric or the sewing thread used for sewing.

[0007] However, because odorous substances accumulate in the stuffing contained within the covering, and because it is not as easy to wash as the covering, efforts are being made to give the stuffing itself deodorizing properties.

[0008] For example, Patent Document 3 proposes synthetic cotton mixed with deodorizing short fibers as a stuffing material using synthetic fibers and having a deodorizing function.

[0009] Furthermore, Patent Document 4 proposes a stuffing material in which short fibers are obtained by kneading, impregnating, or applying antibacterial agents or deodorants into fibers, and then bundling the resulting short fibers with other short fibers to form short fiber bundles. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] JP 2012-67430 A [Patent Document 2] International Publication No. 2017 / 014241 [Patent Document 3] Japanese Patent Application Publication No. 9-313323 [Patent Document 4] JP 2018-193646 A Summary of the Invention [Problem to be solved by the invention]

[0011] Patent Documents 1 and 2 are processed yarns with a structural feature of sheath yarns spreading radially, and such structures contain a large amount of air with low thermal conductivity, making them a filling material with excellent heat retention, and the core yarn and sheath yarn that form the framework are integrated by interlacing and fluid processing, so that the bulkiness can be maintained even after washing. However, when washing using a home washing machine, the sheath yarns of adjacent bulky processed yarns may become entangled due to being rubbed and compressed depending on the number and type of clothes washed at the same time, and the bulkiness of the structure may decrease. In addition, if the user's sweat odor or the like enters the complex voids inside the structure formed by the entanglement of the sheath yarns, it cannot be removed by gentle washing, and body odor accumulates over time, which can cause a bad odor.

[0012] Patent Document 3 discloses a stuffing material that utilizes a nonwoven fabric that is entangled after opening and forming a sheet from synthetic staple fibers, and the deodorizing function, which is one of the features of Patent Document 3, is realized by blending deodorizing fibers that are the same short fibers as the base material. When a nonwoven fabric made of synthetic staple fibers is used as a stuffing material, it is necessary to perform an entanglement process, and the bulkiness as a stuffing is reduced in comparison with the stuffing materials using bulky processed yarns in Patent Documents 1 and 2. In addition, the deodorizing function, which is a feature of the material, is obtained by adding a deodorizing agent to synthetic staple fibers by resin processing or the like, so it cannot be said that it has high washing durability, and the deodorizing function decreases with use. In addition, when the entanglement during nonwoven fabric processing is lightened for the purpose of increasing bulkiness, etc., the deodorizing fibers are easily removed by kneading or compression deformation applied during home washing, etc., and the deodorizing fibers that appeal to their function also fall off, which can cause a problem of further reducing the deodorizing function of the stuffing material.

[0013] Patent Document 4 describes a stuffing material in which synthetic short fibers are bundled together, and there is a restriction on the bulkiness, and further, it is described that a deodorizing function can be imparted by functional fibers. Patent Document 4 is characterized in that the structure is a fiber bundle in which short fibers are bundled together. Therefore, the structure is more prone to the deodorizing fiber falling off over time than Patent Document 3, and as with Patent Document 3, there are cases in which it is difficult to maintain the deodorizing function. In bedding applications such as pillows, futons, and mattress pads, which are washed less frequently than clothing, cleanliness is an important factor because they come into contact with the skin, and in such applications, not only washability but also antibacterial properties and deodorizing properties that suppress the generation of bad odors are particularly required.

[0014] The present invention has been made in consideration of the above, and aims to provide a filling that combines excellent deodorizing properties that are sustainable even after washing and use, and comfortable cushioning properties even when used for bedding that places a heavy weight on the body, such as pillows, futons, and mattress pads, and a textile product containing the filling. [Means for solving the problem]

[0015] The problems with the conventional technology described above are solved as follows. (1) A stuffing material comprising a processed yarn in which fiber A and fiber B, which is relatively longer than fiber A, are integrated, and at least fiber B contains a deodorizing fiber. (2) The filling described in (1), wherein fiber B forms loops. (3) A stuffing material according to either (1) or (2), in which the deodorizing fiber contained in fiber B is a polyurethane-based fiber. (4) A stuffing material according to any one of (1) to (3), in which the deodorizing fiber is contained in an amount of 10% by mass or more relative to the total amount of the stuffing material. (5) A textile product comprising a filling material according to any one of (1) to (4). Effect of the Invention

[0016] The stuffing of the present invention maintains excellent deodorizing properties even after repeated use and repeated washing, and can provide stuffing and fiber products that also have comfortable cushioning properties. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2 is a schematic side view of an example of textured yarn contained in the filling of the present invention. [Diagram 2] FIG. 1 is a schematic diagram for explaining a method for confirming the center line of the processed yarn in the stuffing of the present invention. [Diagram 3] FIG. 2 is a schematic process diagram showing an example of a method for producing textured yarn for the stuffing of the present invention. [Figure 4] FIG. 2 is a schematic side view for explaining a suction nozzle used in an example of a method for producing textured yarn for the stuffing of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] The present invention will now be described in conjunction with preferred embodiments.

[0019] The filling of the present invention includes a textured yarn in which fiber A and fiber B, which is relatively longer than fiber A, are integrated.

[0020] In the textured yarn of the present invention, fiber A serves as the core yarn, around which fiber B is present, and the two are integrated together.

[0021] Fiber A and fiber B are designed to more prominently exhibit the intended effect, but from the viewpoints of bulkiness as a fiber structure and processed yarn, and bulkiness processability and processing passability in the yarn processing step, fiber A and fiber B are preferably long fiber multifilament made of synthetic fiber.

[0022] The synthetic fibers are fibers made of high molecular weight polymers, and may be produced, for example, by melt spinning or solution spinning.

[0023] Examples of the synthetic fibers include fibers made of polymers such as polyethylene terephthalate or copolymers thereof, polyethylene naphthalate, polybutylene terephthalate, polytrimethylene terephthalate, polypropylene, polyolefin, polycarbonate, polyacrylate, polyamide, polylactic acid, and polyurethane.

[0024] Among the above-mentioned polymers, polycondensation polymers such as polyester and polyamide have crystallinity and a relatively high melting point. Therefore, even if heated at a relatively high temperature during a heat treatment process in post-processing or during actual use (cleaning, etc.), they do not deteriorate or become worn out, and are suitable as polymers to be used in the present invention. In particular, these polycondensation polymers have a melting point of 165°C or higher and excellent heat resistance, making them preferable.

[0025] It is also preferable to use polyurethane fibers as the synthetic fibers. In particular, when the filling of the present invention is applied to bedding such as pillows and mattress pads, the product can effectively distribute body pressure and contribute to reducing physical fatigue during sleep, in combination with the resilience provided by the voids secured inside the textured yarn.

[0026] As described later, by using polyurethane-based fibers as the deodorizing fibers, it is possible to obtain higher deodorizing performance and better cushioning properties. For this reason, it is preferable that both fiber A and fiber B of the processed yarn used for the stuffing contain polyurethane-based fibers.

[0027] The polyurethane resin used in the polyurethane fiber is preferably a polyether polyurethane-urea resin.

[0028] The polyurethane fiber preferably has good heat resistance and excellent mechanical and elastic properties. For example, the polyurethane fiber preferably has a z-average molecular weight of 200,000 or more, more preferably 250,000 or more, and even more preferably 300,000 or more, as measured by GPC (gel permeation chromatography).

[0029] In addition, the polyurethane fiber preferably contains an inorganic deodorant having deodorizing properties against ammonia gas. By making the polyurethane fiber contain an inorganic deodorant having deodorizing properties against ammonia gas, in addition to the deodorizing properties against acetic acid gas, nonenal gas, and isovaleric acid gas, which are the original characteristics of the polyurethane fiber, it is possible to impart deodorizing properties against ammonia gas, and it is possible to exhibit effective deodorizing performance against each component of the four major odors, and it is possible to obtain a filling with excellent deodorizing properties against odors.

[0030] Examples of the inorganic deodorant include metal phosphates made of zirconium, titanium, aluminum, and calcium, and zinc-containing silica. Among them, from the viewpoint of deodorizing properties against ammonia, it is preferable to use at least one selected from the group consisting of zirconium phosphate, titanium phosphate, and aluminum dihydrogen triphosphate having a layered structure, and zirconium phosphate is particularly preferable. In addition, as for metal phosphates such as zirconium phosphate, those that do not support metal ions such as silver ions and copper ions are preferably used from the viewpoint of deodorizing properties against ammonia.

[0031] The content of the deodorant in the polyurethane fiber is preferably 1% by mass or more. In this range, the deodorant fiber has sufficient absorption and adsorption of the malodorous components, and can claim deodorant function. In addition, in order to enhance the deodorant function, such as exerting deodorant properties even in a short time, the more the deodorant, the better the effect, so the content of the deodorant is more preferably 2% by mass or more. Furthermore, in the case where the stuffing of the present invention is used for bedding such as pillows and mattress pads, even in a state where the surface area of ​​the deodorant fiber is reduced by compression, from the viewpoint of effectively exerting the deodorant properties of the polyurethane fiber, the content of the deodorant is more preferably 3% by mass or more. In addition, the content of the deodorant is preferably 10% by mass or less, as a range in which the mechanical properties and elastic properties such as the strength and elongation recovery of the polyurethane fiber are not reduced and comfortable cushioning properties are obtained.

[0032] The content of the polyurethane fiber in the filling of the present invention is preferably 20% by mass or more. By making the content 20% by mass or more, the texture when compressed can be made similar to that of urethane foam, and the texture and body pressure dispersion effect like that of conventional urethane foam can be obtained. In addition, since the filling contains processed yarn with voids, it is possible to wash it at home, which was difficult with conventional urethane foam, and it has excellent features for use in bedding, etc., such as maintaining cleanliness. In addition, the more polyurethane fiber, which is a deodorizing fiber, is contained, the better the deodorizing performance will be.

[0033] The polymer constituting Fiber A and Fiber B may contain various additives, such as inorganic substances such as titanium oxide, silica, and barium oxide, colorants such as carbon black, dyes, and pigments, flame retardants, fluorescent brighteners, antioxidants, and ultraviolet absorbers, as long as the effects of the present invention are not impaired.

[0034] Fiber A and fiber B may be either single component fibers or composite fibers in which two or more component polymers are arranged in the fiber cross section.

[0035] Fiber B contains deodorizing fibers. Fiber B, which is raised radially around fiber A, contains deodorizing fibers, and can actively absorb and adsorb odorous components that have penetrated into the fiber structure, thereby demonstrating excellent functionality.

[0036] Deodorizing fibers are fibers that have deodorizing functions, and having deodorizing functions means that the fiber exhibits a deodorizing rate of 70% or more against ammonia, a component included in all odor categories, including sweat odor, aging odor, excrement odor, cigarette odor, food waste odor, and ammonia odor, in accordance with the deodorizing test method described in paragraph 21 of the SEK Mark Textile Product Certification Standards (revised June 1, 2021) established by the Japan Textile Evaluation Technology Council.

[0037] Examples of the deodorizing fibers that can be used include fibers in which a deodorizing component is applied to a general-purpose fiber such as polyester or polyamide by spraying, dipping, or the like, and then, if necessary, heat treatment is performed to fix the deodorizing component on the fiber surface; fibers obtained by spinning a resin in which a functional agent or particles having a deodorizing function have been mixed in advance; and fibers spun from a resin such as polyurethane that has micropores inside the fiber and has a deodorizing function due to its structural characteristics.

[0038] There are several principles by which deodorizing functions are realized, but the deodorizing fiber in the present invention is preferably one that absorbs and adsorbs odorous components and removes the odor through a chemical reaction, thereby reducing the odor level of the malodor and making it odorless, and from this viewpoint, it is preferable that the deodorizing fiber is a polyurethane fiber. By using a polyurethane fiber for the deodorizing fiber, it is possible to obtain a filling that has excellent deodorizing properties, which are sustainable even after washing and use, as well as a comfortable cushioning property, which provides both a pleasant feel and excellent functionality.

[0039] The content of the deodorant fiber in fiber B is preferably 20% by mass or more. By making the content 20% by mass or more, more preferably 30% by mass or more, a large amount of the deodorant fiber is present in the outermost layer of the fiber structure, so that excellent functionality such as a deodorant function in a short time can be exhibited. In addition, 100% by mass of fiber B may be the deodorant fiber.

[0040] The content of the deodorant fiber in the filling of the present invention is preferably 10% by mass or more. Within this range, the absorption and adsorption of malodorous components such as ammonia, acetic acid, and isovaleric acid works effectively as a fiber structure. Also, 100% by mass of the filling of the present invention may be deodorant fiber. In this case, it is preferable to adjust the mechanical function such as cushioning of the filling as necessary by designing the fiber structure such as the thickness of the fiber constituting the processed yarn and the way of bundling the processed yarn.

[0041] The mass ratio of the deodorant fiber to the total amount of the filling can be obtained by calculating the total amount of the filling and the mass of the processed yarn, identifying the deodorant fiber constituting the processed yarn, and calculating the mass of the deodorant fiber in the processed yarn. Specifically, after measuring the total mass of the filling of the present invention, the processed yarn is separated from the filling, and the mass of the processed yarn is measured. Next, the fibers constituting the processed yarn are separated, and the deodorant fiber is identified according to the deodorant property test method described in the Examples. Next, the processed yarn is extracted until the total length of the sample is 1m or more, the fineness and length of each fiber constituting the processed yarn are determined, and the mass ratio of each component fiber in the processed yarn is calculated. Then, the mass of the deodorant fiber in the processed yarn is calculated, and the mass ratio of the deodorant fiber to the total amount of the filling can be obtained.

[0042] The cross-sectional shape of Fiber A and Fiber B may be any shape. For example, by changing the shape of the discharge holes of the spinneret or by joining the yarns after discharge, the cross section can be changed from a round cross section to a triangular cross section, a Y-shape, a flat type, a multi-lobe type, a multi-fin type, a hollow type, or the like.

[0043] The single fiber fineness of the fibers constituting the textured yarn is preferably 0.5 dtex or more. By making the single fiber fineness 0.5 dtex or more, deterioration of quality such as yarn breakage during actual use is suppressed, and the handleability during processing into products is also excellent.

[0044] In particular, the single fiber fineness of fiber B is preferably 1.0 dtex or more. By making the single fiber fineness 1.0 dtex or more, more preferably 3.0 dtex or more, in applications where a relatively large load is continuously applied, such as pillows and mattress pads for which the stuffing of the present invention can be suitably used, the spacing between the fibers B can be secured even in a compressed state, and a good pile form and therefore excellent bulkiness can be secured.

[0045] The single fiber fineness of the fibers constituting the textured yarn is preferably 100 dtex or less, which can ensure comfortable cushioning and a feel without a foreign body sensation.

[0046] The single fiber fineness can be calculated from the fiber diameter, number of filaments and density, or the mass per 10,000 m can be calculated from the simple average of multiple measurements of the mass per unit length of the fiber.

[0047] In the present invention, examples of textured yarns in which fiber B, which is relatively longer than fiber A, is integrated include textured yarns in which fiber A and fiber B are twisted together, textured yarns with a core-sheath structure formed by wrapping fiber B around fiber A, textured yarns in which fiber B is inserted perpendicular to the fiber axis of fiber A and twisted together and held at a constant interval, and textured yarns entangled by fluid processing using a fluid such as air.

[0048] In such a processed yarn, fiber B is relatively longer than fiber A, and fiber B forms slack or loops, forming voids between fiber A and fiber B, which form the core yarn, and between the single fibers that make up fiber B. This results in excellent cushioning properties as a filling. In particular, processed yarn in which fiber B forms loops is excellent in that the loops made of fiber B can withstand compression in the cross-sectional direction of the processed yarn, and repel each other with loops of other processed yarns to maintain voids, and is a preferred form for processed yarn used in the filling of the present invention, as it has better cushioning properties.

[0049] Fiber B is fixed by being sandwiched between fiber A while being wound around fiber A and intersecting with fiber A, and more preferably, loops are formed starting from this fixed point, and the fibers are raised radially from the center of the textured yarn toward the outer layer. This means that the more the loops stand on their own and protrude toward the outer layer, the higher the bulkiness of the textured yarn becomes, leading to the formation of many voids between the fibers. In Figure 1, fiber B (2 in Figure 1) intersects with fiber A (1 in Figure 1), forming loops that stand on their own, constituting a bulky structure that is responsible for the formation of voids between the fibers.

[0050] The textured yarn preferably has a loop size of 1.0 mm or more. The loop size is defined as the distance from the center line of the textured yarn (3 in FIG. 2) to the apex of the loop (5 in FIG. 2).

[0051] The textured yarn preferably has loops at a frequency of 1 / mm or more and 30 / mm or less in the fiber axis direction of the textured yarn. By setting the loop frequency to 1 / mm or more, more preferably 2 / mm or more, and even more preferably 5 / mm or more, the size of the gap between the single fibers can be made uniform, and cushioning properties, bulkiness, functionality, and the like can be uniformly exhibited. In addition, the pressure applied to the loops can be easily dispersed, and a resilience and resistance to settling can be obtained. By having resistance to settling, the stuffing of the present invention is suitable for bedding such as pillows and mattress pads. In addition, by setting the loop frequency to 30 / mm or less, more preferably 20 / mm or less, and even more preferably 15 / mm or less, the loops form a structure in which each loop is independent without forming an excessively entangled portion, and mutual repulsion between the loops of adjacent textured yarns can be easily obtained.

[0052] In order to change the size of the loops in the textured yarn, it is preferable to control the difference in yarn length between fiber A and fiber B.

[0053] In the processed yarn, the yarn length of fiber B relative to fiber A serving as the core yarn, i.e., the yarn length difference, is preferably 3 times or more and 100 times or less. By making the yarn length difference 3 times or more, more preferably 5 times or more, a bulky processed yarn is obtained, which is suitable for use as a stuffing. In addition, the deodorant fiber contained in fiber B is in a state of being opened at the single fiber level, and the specific surface area, which is the surface area per mass, is effectively utilized, so that the deodorant function and touch of fiber B can be effectively acted. In addition, by making the yarn length difference 100 times or less, more preferably 70 times or less, the length of fiber B that stands independently from fiber A serving as the core yarn is easily uniform, and the size of the voids formed inside when bundled together to form a stuffing can be homogenized, so that the bulkiness of the processed yarn in the fiber axis direction can be homogenized, and the cushioning properties and functionality when used as a stuffing can be expressed without unevenness, thereby improving the quality.

[0054] Furthermore, when a polyurethane fiber is used as fiber B, the yarn length difference of fiber B relative to fiber A is more preferably in the range of 10 to 50 times. By keeping it within this range, even if a polyurethane fiber, which is a relatively soft fiber, is used as fiber B, the fibers can be spread radially with fiber A at the center.

[0055] Since the filling of the present invention has gaps between fiber A and fiber B and between the single fibers that make up fiber B, even when the filling is made of bundled processed yarns, a suitable amount of gap can be ensured inside the filling.

[0056] The size of the gap between the single fibers constituting fiber B is preferably 10 μm or more and 1000 μm or less. By making the size of the gap 10 μm or more, more preferably 20 μm or more, and even more preferably 30 μm or more, the surface area of ​​the deodorizing fiber in the stuffing of the present invention can be effectively utilized, and the fiber structure can be deformed well when compressed, ensuring cushioning properties. In addition, by making the size of the gap 1000 μm or less, more preferably 700 μm or less, and even more preferably 500 μm or less, the number of adjacent contacts due to the loop structure made of fiber B can be increased, and recovery from compression can be improved.

[0057] The size of the gap between single fibers can be obtained by observing two-dimensionally with an optical microscope, drawing an inscribed circle in the gap surrounded by the single fibers, and measuring the diameter of the inscribed circle. Specifically, samples are taken from 10 randomly selected locations in the filling, the size of the 10 randomly selected gaps in each sample is measured, the average value for each sample is calculated, and the simple average value of all samples is used as the size of the gap between single fibers.

[0058] By using the processed yarn as stuffing, the processed yarn remains in shape even when it is repeatedly compressed and restored as stuffing, and good heat retention and cushioning properties can be maintained without becoming worn out over time. Furthermore, even when it is kneaded and twisted in a wet state during washing, the fibers constituting the processed yarn remain in place without falling off, and the function as stuffing can be well maintained.

[0059] The filling of the present invention can be made by using the processed yarn as a fiber winding package, tow, cut fiber, woven or knitted fabric or other various fiber structures. However, from the viewpoint of providing comfortable cushioning properties in addition to deodorizing properties, it is preferable to use the processed yarn in a bundled state and include it in the filling.

[0060] The material for bundling the textured yarn may be a normal fiber material, and if the material also contains or is composed of deodorant fiber, it is preferable because the proportion of the deodorant fiber as a filling can be increased.

[0061] The filling of the present invention is stuffed as batting inside the covering of the textile product.

[0062] The filling of the present invention has excellent deodorizing properties, and is capable of maintaining its deodorizing properties and comfortable cushioning properties even after it is subjected to external forces such as washing or compression during use. It can be suitably used for everyday applications such as general clothing, sports clothing, clothing materials, gloves, shoe insoles, bedding, carpets, sofas, cushions and other interior products, stuffed toys, car seats and other vehicle interior products, health products, and the like, as well as for environmental and industrial material applications such as filters and harmful substance removal products.

[0063] In addition, the filling of the present invention can be used for products that are washed infrequently or for products with shapes and sizes that are difficult to wash, and can be used more suitably as a filling for pillows, futons, mattress pads, and other bedding, plush toys, etc. Conventional pillows, mattress pads, and other bedding mainly use covers made of deodorizing fibers for the purpose of deodorization, and although the odor on the surface of the product can be washed off by washing the cover, the odor gradually accumulates in the filling itself, making it difficult to eliminate. On the other hand, when the filling of the present invention is used, the generation of odors such as sweat odor and aging odor that accumulate in the filling is suppressed in the first place, and the filling can be easily washed at home, so that cleanliness can be maintained, and by making it into a pillow or mattress pad, it can be applied to a wide range of bedding from general use to nursing care use.

[0064] An example of a method for producing the filling of the present invention will now be described.

[0065] The method of integrating fiber A and fiber B to form a processed yarn can be any of the following: a process in which fiber A and fiber B are twisted together; a fluid processing method in which fiber A and fiber B are entangled inside a nozzle, such as mixed fiber entanglement processing using an air entanglement nozzle or taslan processing; and a fluid processing method in which fiber B is swirled around fiber A in a large space outside the nozzle to entangle them.

[0066] Among these yarn processing techniques, a fluid processing method in which a suction nozzle is used to rotate and entangle fiber B around fiber A, which is a preferred method for producing textured yarn in which fiber B forms loops, which is the preferred textured yarn form of the present invention. The fluid processing method is roughly divided into two steps. The first step is a bulking process in which fiber A and fiber B are entangled by a fluid to form loops made of fiber B, and the second step is a heat treatment process in which the bulky textured yarn is heat treated to fix the structure of the textured yarn and fix various fiber treatment agents.

[0067] An example of the process for producing the textured yarn will be described with reference to the schematic process diagram of FIG. 3 and the schematic side view of the suction nozzle of FIG.

[0068] In the first step, fiber A (1 in FIG. 3) and fiber B (2 in FIG. 3), which are synthetic raw materials, are drawn out in a specified amount by a supply roller 13 having a nip roller or the like, and are sucked up by a suction nozzle 6 capable of spraying compressed air. At this time, the deodorizing fiber is supplied by a method appropriately selected from a method of supplying it along fiber B, a method of supplying it after doubling it with fiber B in advance, and the like. Similarly, when fiber A also contains a deodorizing fiber, the supply method can be appropriately selected.

[0069] In the fiber structure of the textured yarn, when the fiber A and the fiber B are processed with a vertical jet flow, they become highly entangled at the single fiber level, resulting in mixed fiber entanglement, which may cause problems in terms of loop breakage, bending, and the formation of gaps between the fibers. In addition, polyurethane-based fibers, which are preferably used as deodorant fibers, have the yarn characteristics of being greatly elongated by even a slight distortion, so when they are subjected to a vertical jet flow, they are easily elongated and retained in the nozzle. For this reason, yarn processing using a propulsive jet flow in which compressed air is sprayed in the running direction of the yarn is preferred. The propulsive jet flow makes it possible to form a textured yarn that suppresses product defects such as fiber clumps when used for stuffing, and prevents thread breakage of loops made of fiber B.

[0070] From the viewpoint of preventing disturbance and opening of the processed yarn in the suction nozzle, the compressed air injection angle (14 in Fig. 4) is preferably less than 60° with respect to the running yarn. By setting the injection angle to less than 60°, more preferably 45° or less, and even more preferably 20° or less, it is possible to suppress disturbance and opening in the narrow space inside the suction nozzle while maintaining a high propulsive force, and to stably form loops made of fiber B.

[0071] In a suction nozzle, the flow rate of compressed air injected from the nozzle is preferably such that the yarn inserted from the supply roller into the nozzle has the minimum necessary tension and runs stably between the supply roller and the nozzle and within the nozzle without causing yarn swaying. The optimal flow rate varies depending on the hole diameter of the suction nozzle used, but the air flow speed within the nozzle is preferably 100 m / s or more in order to impart yarn tension and facilitate the formation of a loop, which will be described later. In addition, the air flow speed is preferably 700 m / s or less, and within this range, the running yarn can run stably within the nozzle relative to the yarn without causing yarn swaying due to excessively injected compressed air.

[0072] Next, the yarn to which the compressed air has been applied is swirled outside the nozzle to form a loop made of fiber B. In this step, in order to swirl the yarn supplied at a predetermined position after being sprayed from the nozzle, the ratio of air flow speed to yarn speed (air flow speed / yarn speed) is adjusted to be 100 to 5000.

[0073] The air velocity here refers to the speed of the air jetted from the suction nozzle outlet together with the running yarn, and can be controlled by the cross-sectional area of ​​the nozzle outlet and the flow rate of compressed air. The yarn speed can also be controlled by the rotation speed of the take-up rollers (9 in Fig. 3) that take up the yarn after it leaves the suction nozzle.

[0074] Since the turning force for forming loops of fiber B increases or decreases depending on the speed ratio between the air current speed and the yarn speed, if one wishes to increase the number of intersections with fiber A and strengthen the fixation of loops made of fiber B, one should approach this speed ratio to 5000. Conversely, if one wishes to make it slower, one should approach it to 100; this can be adjusted as appropriate according to the application for which the textured yarn of the present invention is used.

[0075] This swirling force occurs at the point where the accompanying air current leaves the running yarn. A swirling point 7 is provided to change the yarn path at this point. Specifically, the yarn path can be changed using a bar guide or the like, and by taking up the yarn at a predetermined speed, fiber B, which has swirled around fiber A (the core yarn), forms a loop starting from the point where it is fixed by crossing with fiber A. To ensure space for this swirling, it is preferable that the swirling point of the running yarn is located away from the nozzle discharge port.

[0076] Here, the distance between the nozzle and the turning point suitable for producing textured yarn varies depending on the speed of the jetted airflow. In order to form the intersection points of fiber A and fiber B at an appropriate period in balance with the diffusion of the airflow, the distance between the nozzle and the turning point is set to 1.0×10 at which the jetted airflow can maintain an appropriate turning force. -5 ~1.0×10 -3 It is preferable that there is a turning point 7 during the travel time of 2.0 × 10 -5 ~5.0×10 -4 It is more preferable that the turning point 7 exists during the travel time of fiber A per second. By adjusting the position of the turning point in this manner, it is possible to control the number of turns of fiber B with respect to fiber A and the cycle of the crossing points. The number of turns and the cycle of the crossing points can also be adjusted by the fineness of fiber B to be turned, the rigidity of fiber B, and the like, and it is preferable to appropriately adjust these factors, including the number of filaments of fiber B.

[0077] The above-mentioned yarn length difference can be set by the supply speeds of fiber A and fiber B.

[0078] When fiber B is supplied, from the viewpoint of suppressing yarn breakage due to abrasion during unwinding or running of the raw yarn, the supply speed of fiber B is preferably 1000 m / min or less, more preferably 800 m / min or less, and even more preferably 600 m / min or less.

[0079] The textured yarn 8 having loops made of fiber B formed therein is taken up by a take-up roller 9. For the purposes of fixing the structure of the textured yarn and fixing various fiber treatment agents therein, it is preferable to subject the textured yarn to a heat treatment once it has been wound up or following the bulking process.

[0080] 3 shows an example of a processing step in which heat treatment is performed following bulk processing. This heat treatment is performed, for example, by a heater 10. The heat treatment temperature is approximately ±30°C of the crystallization temperature of the polymer with the lowest crystallization temperature among the polymers used in the fibers that make up the textured yarn. If the processing is performed within this temperature range, the processing temperature is far from the melting point of the polymer, so there are no fused and hardened parts between the fibers that make up the textured yarn, and it is possible to suppress the feeling of a foreign body or a decrease in the feel.

[0081] The heater used in this heat treatment step can be a general contact or non-contact heater, and from the viewpoint of maintaining the bulkiness before the heat treatment and suppressing deterioration of the constituent fibers, it is preferable to use a non-contact heater. Examples of non-contact heaters include air heating heaters such as slit-type heaters and tube-type heaters, steam heaters that heat with high-temperature steam, halogen heaters and carbon heaters that use radiation heating, microwave heaters, etc. Among them, heaters that use radiation heating are preferable from the viewpoint of heating efficiency.

[0082] Regarding the heating time in the heat treatment process, it is preferable to adjust the treatment temperature and time according to the required characteristics, taking into consideration, for example, the time required for crystallization to progress and for the structure of the fibers constituting the processed yarn to be fixed, the shape of the processed yarn to be fixed, and the time required for the fixation of various fiber treatment agents to be completed when they are applied.

[0083] Silicone-based oils can be applied to the texture of the processed yarn before or after the heat treatment step, as long as the deodorizing properties are not impaired. The silicone applied here is preferably crosslinked appropriately by heat treatment or the like to form a film.

[0084] Examples of the silicone-based oil agent include dimethyl polysiloxane, hydrogen methyl polysiloxane, amino polysiloxane, and epoxy polysiloxane, and these can be used alone or in combination. In order to form a uniform film on the fiber surface, dispersants, viscosity modifiers, crosslinking accelerators, antioxidants, flame retardants, and antistatic agents can be added within a range that does not impair the purpose of silicone adhesion. The silicone-based oil agent can be used without a solvent or in the form of a solution or aqueous emulsion, and from the viewpoint of uniform adhesion of the oil agent, it is preferable to use an aqueous emulsion. The silicone-based oil agent is preferably treated so that it can be attached to the bulky yarn in a mass ratio of 0.1 to 5.0% by using an oil agent guide, an oiling roller, or spraying. Thereafter, it is preferable to dry at any temperature and time and cause a crosslinking reaction.

[0085] The processed yarn that has completed the heat treatment process may be wound by a winder 12 equipped with a tension control function, with the speed being regulated by a delivery roller 11. There are no particular limitations on the winding shape, and so-called cheese winding or bobbin winding may be used. Also, taking into consideration the processing into the final product, it is possible to combine a plurality of yarns in advance to form a tow, or to wind the yarn as it is on a skein frame and bundle it for use.

[0086] Since the filling is filled into the side fabric of a textile product, the following methods are preferred: pulling together several to several tens of the processed yarn and combining them; winding a specified length of the processed yarn around a skein frame a specified number of times to form a yarn bundle; and winding the processed yarn while traversing it within a specified width range to form a wide sheet-like bundle.The use of such bundles makes it possible to provide filling that is excellent in terms of handling during filling and ease of adjusting the filling amount. EXAMPLES

[0087] The filling of the present invention and its effects will be specifically described below with reference to examples.

[0088] (Measurement and evaluation methods) (1) Fineness The processed yarn was extracted until the total length of the collected samples was 1 m or more, and the mass of each fiber constituting the processed yarn was measured and converted to a value per 10,000 m to calculate the fineness. This was repeated 10 times, and the average value was rounded off to the nearest tenth to determine the fineness (dtex) of the fiber.

[0089] (2) Yarn length difference The length of the fibers constituting the processed yarn extracted as described in (1) above was measured, and the yarn length difference between fiber A and fiber B (length of fiber B / length of fiber A) was calculated. This was repeated 10 times, and the average value was rounded off to the first decimal place to obtain the yarn length difference (times).

[0090] (3) Percentage of deodorizing fibers The mass ratio x (%) of the deodorizing fiber contained in the processed yarn was calculated from the fineness measured in (1) above and the yarn length difference measured in (2) above. Next, the mass ratio c of the deodorizing fiber contained in the filling was calculated from the mass y of the processed yarn contained in the filling and the total mass z of the filling as c=xy / z (%), and the value rounded off to one decimal place was regarded as the mass ratio of the deodorizing fiber.

[0091] (4) Deodorizing properties In accordance with the deodorizing test method described in Article 21 of the SEK Mark Textile Product Certification Standards (revised June 1, 2021) established by the Japan Textile Evaluation Technology Council, a deodorizing test was conducted and evaluated using ammonia, which is a component included in all odor categories, including sweat odor, aging odor, excrement odor, cigarette odor, food waste odor, and ammonia odor, as the odor component to be tested.

[0092] As a blank test, a 50 L sampling bag made of vinyl alcohol polymer film (Smart Bag PA, manufactured by GL Sciences Inc.) was filled with 30 L of ammonia gas with an initial concentration of 100 ppm and sealed. After leaving it for 2 hours, the residual gas concentration was measured with a gas detector tube and this was used as the blank test concentration.

[0093] Next, 500g of stuffing was prepared as a sample for measurement, and the stuffing was filled into a non-deodorizing polyester fabric to create a sample simulating a pillow. The sample was placed in a sample bag, filled with 30L of ammonia gas with an initial concentration of 100ppm, and sealed. The remaining gas concentration after 2 hours was measured with a gas detector tube (manufactured by Gastec Co., Ltd.), and this was used as the measured concentration for each sample. The measurement was performed three times, and the average value was used to calculate the reduction rate of the remaining gas concentration using the following formula, and the value rounded off to the first decimal place was used as the deodorization rate before washing. Deodorization rate of odor components (%) = ((blank test concentration - measured concentration of each sample) / blank test concentration)) × 100 ... (formula).

[0094] Next, as described in Section 17 of the SEK Mark Textile Product Certification Standard (revised June 1, 2021), in accordance with JEC326 "Washing Method for SEK Mark Textile Products" and using a home washing machine as specified in Washing Method 103 described in JIS L0217:1995 "Display Symbols for Handling Textile Products and Their Display Methods", JAFET standard blended detergent (containing polyoxyethylene alkyl ether and sodium alpha olefin sulfonate) was added at a ratio of 40 mL to 30 L of water at 40 ° C to prepare a washing liquid, and the sample and the load cloth placed in a laundry net were put in so that the bath ratio was 1:30, and the process of washing for 5 minutes, spin-drying, rinsing for 2 minutes, spin-drying, rinsing for 2 minutes, and spin-drying was performed once. This was repeated 10 times, and then the sample was hung to dry. Using this washed sample, a deodorizing test was performed in the same manner as before washing, the deodorizing rate was calculated, and the value rounded off to the first decimal place was used as the deodorizing rate after washing. The evaluation criteria for the deodorizing rate was 70% or more.

[0095] (5) Cushioning (touch) For the evaluation of the texture, a sample simulating the pillow used in the evaluation in (4) above was used. The sample was left to stand, and the hand was placed on the sample, and the texture when compressed by applying body weight was evaluated on the following four-point scale. ◎: Excellent texture with a snug fit that wraps around your hand and a springy feel that gradually sinks in. ○: Good texture with a moderate fit and elasticity. Δ: Either the fit or the elasticity is poor, and the feel is somewhat poor. ×: There is neither a good fit nor a good elasticity, and the texture is poor.

[0096] [Example 1] (Fiber A) Polyethylene terephthalate with an intrinsic viscosity (IV) of 0.6 dL / g was melted at 290°C, weighed, and poured into a spinning pack, and discharged from a spinneret with concentrically arranged discharge holes. After cooling and solidifying the discharged yarn by blowing 20°C cooling air at a flow rate of 30 m / min from one side, a spinning oil was applied, and the undrawn yarn was wound up at a spinning speed of 1500 m / min. The wound undrawn yarn was drawn 3.0 times between rollers heated to 90°C and 140°C at a drawing speed of 800 m / min, to obtain fiber PET1 with a total fineness of 80 dtex and 12 filaments. PET1 was used as fiber A.

[0097] (Fiber B-1) PET1 was also used as fiber B-1.

[0098] (Fiber B-2) As the deodorant fiber, four polyurethane fibers ("Lycra" (registered trademark) fiber T-327C, manufactured by Toray Opelontex Co., Ltd., hereinafter referred to as "PU") having a fineness of 22 dtex were bundled together to give a total fineness of 88 dtex, which was used as fiber B-2.

[0099] (Textured Yarn) In the process shown in FIG. 3, the fiber A was supplied from 1 in FIG. 3 at a supply roller speed of 10 m / min. The fiber B-2 was also supplied from 2 in FIG. 3 at a supply roller speed of 200 m / min along with the fiber B-1. That is, the fiber B / fiber A were supplied to the suction nozzle with a yarn length difference of 20 times so that fiber A was the core yarn and fiber B was the sheath yarn. Compressed air was sprayed from the suction nozzle at an angle of 20° to the running yarn so that the air flow speed was 300 m / s, and the core yarn and sheath yarn were sprayed from the nozzle together with an accompanying air flow so that they would not cross, open, and become entangled in the nozzle. The yarn sprayed from the nozzle was made to run together with the air flow, and the yarn path was changed using a ceramic guide, and the textured yarn having a loop made of the sheath yarn was taken up at a take-up roller speed of 9.5 m / min. The textured yarn was then guided to a tube heater via a roller and heat-treated with heated air at 140° C. for 10 seconds to set the shape of the textured yarn. The textured yarn was wound onto a drum by a tension-controlled winder installed downstream of the tube heater.

[0100] The processed yarn wound on the drum was a spirally processed yarn in which the sheath yarn was wound around the core yarn, with the core yarn made of fiber A as the axis and the sheath yarn made of fiber B forming a loop starting from the intersection with the core yarn, and had a bulky structure with protruding loops made of the sheath yarn. In addition, the deodorizing fiber contained in fiber B also opened up into single fibers to form loops, and the loop formation cycle was highly uniform, allowing for effective use of the surface area of ​​the deodorizing fiber.

[0101] (Filling) A silicone-based oil was evenly sprayed onto this processed yarn so that the final silicone adhesion amount was 0.5% of the processed yarn's mass, and the yarn was subjected to heat treatment at a temperature of 160°C for a treatment time of 5 minutes, and then the yarn was wound onto a drum using a tension-controlled winding machine.

[0102] This textured yarn was pulled out from the drum and 50 g was wound around a skein frame while traversing it over a width of 10 cm to form a single bundle, which was then cut at one point to produce a yarn bundle made of textured yarn.

[0103] Eight bundles of the above yarn were prepared, each of which was cut in half lengthwise and pulled in one direction, shaped to have a uniform thickness, and used as part of the filling for the textile product described below.

[0104] (Textile products) The stuffing made of the above-mentioned processed yarn was filled into the outer fabric made of polyester fabric, and 100g of polyester granular cotton was filled in the lower layer of the stuffing so that the thickness was uniform, and a sample simulating a pillow with a total stuffing mass of 500g was prepared. The mass ratio c of the deodorant fiber in the total mass of the stuffing in Example 1 was 41 mass%.

[0105] The stuffing of Example 1 had a deodorizing rate of 99% before washing and 97% after washing, and the deodorizing performance was hardly decreased by washing, and it was possible to continuously demonstrate excellent deodorizing performance. In addition, when the sample was pressed down with the hand from above, it had an excellent texture with a feeling of fitting as if the hand was wrapped and a gradually sinking elasticity.

[0106] [Example 2] A textured yarn, stuffing and textile products were produced in the same manner as in Example 1, except that fiber B-1 was also prepared by plying four PU strands.

[0107] The textured yarn of Example 2 had a bulky structure with protruding loops made of the sheath yarn, and since fiber B was entirely made of polyurethane-based fibers, the uniformity of the loop formation period for each single fiber was superior, and the surface area of ​​the deodorizing fiber could be effectively utilized.

[0108] When a yarn bundle was produced from the processed yarn, the processed yarn of Example 2 had high uniformity of loops made of the sheath yarn, so there was no snagging when it was wound around the skein frame and the process was easy.

[0109] The mass proportion c of the deodorizing fiber in the total mass of the stuffing in Example 2 was 78 mass %.

[0110] The stuffing of Example 2 had a deodorizing rate of 99% before washing and 99% after washing, and the deodorizing performance did not decrease with washing, and excellent deodorizing performance could be sustained. In addition, when the sample was pressed down with the hand, it had a good texture with a feeling of fitting as if the hand was wrapped and a gradually sinking elasticity, as well as a good resilience.

[0111] [Example 3] In the process of producing the textured yarn, the feed roller speed for fiber A was 10 m / min and the feed roller speed for fiber B was 50 m / min, i.e., the yarn length difference between fiber B and fiber A was 5 times, and the fibers were fed to the suction nozzle in the same manner as in Example 1. The textured yarn, stuffing, and textile products were produced in the same manner as in Example 1.

[0112] The textured yarn of Example 3 had fewer loops and was smaller in size than Example 1, but the loops made of the sheath yarn protruded, making it possible to ensure spaces between the textured yarns.

[0113] The mass proportion c of the deodorizing fiber in the total mass of the stuffing in Example 3 was 38 mass %.

[0114] The stuffing of Example 3 had a deodorizing rate of 86% before washing and 82% after washing, and the deodorizing performance did not decrease much due to washing, and good deodorizing performance could be sustained. In addition, when the sample was pressed into the material from above, it had a good texture with a feeling of fitting as if the hand was wrapped and a moderate sense of elasticity.

[0115] [Example 4] In the process of producing the textured yarn, the feed roller speed for fiber A was 10 m / min and the feed roller speed for fiber B was 300 m / min, i.e., the yarn length difference between fiber B and fiber A was 30 times when the fibers were fed to the suction nozzle. The same procedures as in Example 1 were carried out except for this, to produce the textured yarn, stuffing and textile products.

[0116] The textured yarn of Example 4 had protruding loops made of the sheath yarn, and the loop size was larger than in Example 1, so that even a single piece of textured yarn was bulky.

[0117] The mass proportion c of the deodorizing fiber in the total mass of the stuffing in Example 4 was 41 mass %.

[0118] The stuffing of Example 4 had a deodorizing rate of 99% before washing and 96% after washing, and the deodorizing performance was hardly decreased by washing, and excellent deodorizing performance could be sustained. In addition, when the sample was pressed down with the hand from above, there was little resistance and many parts that flexibly deformed, so it had an excellent fit as if the hand was wrapped around it, and it had a gradually sinking elasticity and an excellent texture.

[0119] [Example 5] (Textured Yarn) A textured yarn was produced in the same manner as in Example 1, except that the number of PU fibers for fiber B-2 was one.

[0120] The textured yarn of Example 5 had a bulky structure with protruding loops made of the sheath yarn, and the deodorizing fiber was opened to form loops so as not to become entangled with PET1, allowing the surface area of ​​the deodorizing fiber to be utilized effectively.

[0121] (Filling) This textured yarn was treated with a silicone-based oil in the same manner as in Example 1, and then heat-treated, and then wound onto a drum using a tension-controlled winding machine.

[0122] This textured yarn was pulled out from the drum and, as in Example 1, 50 g was wound around a skein frame to form a single bundle, which was then cut at one point to produce a yarn bundle made of textured yarn.

[0123] Six bundles of the above yarn were prepared, each of which was cut in half and pulled in one direction to be shaped to a uniform thickness, and used as part of the filling for the textile product described below.

[0124] (Textile products) The stuffing made of the above-mentioned processed yarn was filled into the outer fabric made of polyester fabric, and 200g of polyester granular cotton was filled in the lower layer of the stuffing so that the thickness was uniform, and a sample simulating a pillow with a total stuffing mass of 500g was prepared. The mass ratio c of the deodorant fiber in the total mass of the stuffing in Example 5 was 12 mass%.

[0125] The stuffing of Example 5 had a deodorizing rate of 74% before washing and 70% after washing, and because the mass ratio of the deodorizing fiber was small, the deodorizing performance was low, but it was still able to maintain performance that met the deodorizing rate standard even after washing. In addition, when the sample was pressed into the material from above with the hand, it had a good texture with a feeling of fitting as if the hand was wrapped and a moderate sense of elasticity.

[0126] [Example 6] (Fiber A) Fiber A was made by plying eight PU strands together.

[0127] (Fiber B-1) Four PU strands were bundled together to produce fiber B-1.

[0128] (Fiber B-2) Four PU strands were bundled together to produce fiber B-2.

[0129] (Textured Yarn) Textured yarns were produced in the same manner as in Example 1, except that the above Fiber A, Fiber B-1 and Fiber B-2 were used and the take-up roller speed was 8.5 m / min.

[0130] The textured yarn of Example 6, like the textured yarn of Example 2, had a bulky structure with protruding loops made of the sheath yarn, and had excellent uniformity in the loop formation period of each single fiber, allowing effective utilization of the surface area of ​​the deodorizing fiber.

[0131] (Filling) This textured yarn was treated with a silicone-based oil in the same manner as in Example 1, and then heat-treated, and then wound onto a drum using a tension-controlled winding machine.

[0132] This textured yarn was pulled out from the drum, and 50 g was wound around a skein frame in the same manner as in Example 1 to form a single bundle, and one point of the bundle was cut to produce a yarn bundle made of textured yarn. In this case, since the fiber A of the core yarn of the textured yarn of Example 6 is a polyurethane fiber, when the bundle was wound around the skein frame and cut, the tension at the time of pulling out was released, causing the yarn bundle to shrink. This shrinkage caused the gaps between the textured yarns to further expand, resulting in a highly bulky yarn bundle.

[0133] Ten such yarn bundles were prepared, each of which was cut in half and pulled in one direction to form a uniform thickness, which was then used as part of the filling for the textile product described below.

[0134] (Textile products) A pillow-like sample was prepared by filling the above-mentioned processed yarn into a polyester fabric cover with a total filling weight of 500 g. The mass ratio c of the deodorizing fiber in the total filling weight of Example 6 was set to 100 mass%.

[0135] The stuffing of Example 6 had a deodorizing rate of 99% before washing and 99% after washing, and the deodorizing performance did not decrease with washing, and excellent deodorizing performance could be sustained. In addition, when the sample was pressed down with the hand, it had a good texture with a feeling of fitting as if the hand was wrapped and a gradually sinking elasticity, as well as a good resilience.

[0136] [Example 7] (Fiber B-2) 80 parts by mass of polyethylene terephthalate with an IV of 0.6 dL / g was mixed with 20 parts by mass of zirconium phosphate as an inorganic deodorant, fed to an extruder, and melt-kneaded to prepare masterbatch resin pellets. Next, polyethylene terephthalate with an IV of 0.6 dL / g and the masterbatch resin pellets were mixed in a mass ratio of 9:1, fed to an extruder, melted at 290°C, weighed, and allowed to flow into a spinning pack, and discharged from a spinneret with concentrically arranged discharge holes.

[0137] The discharged yarn was cooled and solidified by blowing 20°C cooling air from one side at a flow of 30 m / min, after which a spinning oil was applied, and the undrawn yarn was wound up at a spinning speed of 1500 m / min. The wound undrawn yarn was drawn 3.0 times between rollers heated to 90°C and 140°C at a drawing speed of 800 m / min, to obtain fiber yarn PET2 with a total fineness of 80 dtex and 12 filaments. PET2 was used as fiber B-2.

[0138] (Textured yarn, stuffing and textile products) A textured yarn, stuffing and textile products were produced in the same manner as in Example 1, except that the above-mentioned fiber B-2 was used.

[0139] The textured yarn of Example 7 had a bulky structure with protruding loops made of the sheath yarn. In addition, fiber B opened each single fiber to form loops, and the loop formation cycle was excellent in uniformity, allowing the surface area of ​​the deodorizing fiber to be effectively utilized.

[0140] The mass proportion c of the deodorizing fiber in the total mass of the stuffing in Example 7 was 39 mass %.

[0141] The stuffing of Example 7 had a deodorizing rate of 91% before washing and 87% after washing, and the deodorizing performance did not decrease much due to washing, and excellent deodorizing performance could be sustained. In addition, when the sample was pressed down with the hand, it had a good texture with a feeling of fitting as if the hand was wrapped and a gradually sinking elasticity.

[0142] [Example 8] (Fiber A) PET1 was used as fiber A.

[0143] (Fiber B-1) A four-strand PU yarn was used as fiber B-1.

[0144] (Fiber B-2) A four-strand PU yarn was used as fiber B-2.

[0145] (Textured Yarn) In the process shown in Figure 3, fiber A was supplied from 1 in Figure 3 at a supply roller speed of 5 m / min. Fibers B-1 and B-2 were supplied together from 2 in Figure 3 at a supply roller speed of 20 m / min. That is, they were supplied to a Taslan nozzle with a yarn length difference of 4 times between fiber B and fiber A so that fiber A was the core yarn and fiber B was the sheath yarn, and they were processed at a compressed air pressure of 0.4 MPa and wound around a drum to obtain a Taslan-textured yarn.

[0146] In the Taslan processed yarn obtained in Example 8, fiber B formed loops and slack, but many fiber B were present near fiber A, and the number of loops protruding to the outside of the processed yarn was small, about 6 per 10 mm, and most of the loops were small, less than 1 mm in size. In addition, some of fiber B and the deodorant fiber that formed loops and slack had broken parts, and there were also parts where the broken yarn ends protruded.

[0147] (Filling and Textile Products) Stuffing and textile products were produced in the same manner as in Example 1, except that the above textured yarn was used.

[0148] The mass proportion c of the deodorizing fiber in the total mass of the stuffing in Example 8 was 72 mass %.

[0149] The stuffing of Example 8 had a deodorizing rate of 84% before washing and 79% after washing, and the deodorizing performance did not decrease much due to washing, and it was possible to maintain good deodorizing performance. In addition, when the sample was pressed into the material from above, it had a good texture with a feeling of fitting as if the hand was wrapped and a moderate sense of elasticity.

[0150] [Example 9] (Fiber A) Two strands of PET1 were used as fiber A, which served as the core and holding threads for the mall yarn.

[0151] (Fiber B-1) PET1 was used as fiber B-1.

[0152] (Fiber B-2) PET2 was used as fiber B-2.

[0153] (Fusing thread) A polyamide-based fusible fiber (copolymer polyamide fiber, manufactured by Toray Industries, Inc. under the trade name "Elder" 22T-10f) was used as the fusible yarn.

[0154] (Textured Yarn) Using a known crochet twisting machine, the ratio of the supply speed of the core yarn (one of the PET1 of fiber A) and the presser yarn (the other one of the PET1 of fiber A) to the supply speed of the flower yarn, which was made by aligning fiber B-1 and fiber B-2, was set to 1:15, and the flower yarn was supplied to the flyer section, and the fusion yarn was added to the presser yarn to supply the core yarn and the presser yarn. The flower yarn was wound around a guide piece with a width and length of 20 mm at the lower end, cut with a cutter, and sandwiched between the core yarn and the presser yarn, twisted together, and wound on a spindle. Next, the crochet yarn was wound into a skein shape for every 100 g using a skein winding machine, and the skein was hung on a skein hanging bar and subjected to pressurized steam treatment at 98 ° C for 20 minutes, and the fusion yarn was melted to obtain a crochet yarn with the flower yarn fused and fixed.

[0155] In the mohair yarn of Example 9, fiber B did not form loops, and compared with the spin-textured yarn of Example 1, fiber B was insufficiently opened.

[0156] (Filling) The skein was cut at one point to produce a yarn bundle made of mohair yarn.

[0157] Four yarn bundles were made from the above-mentioned mohair yarn, and each yarn bundle was cut in half and pulled in one direction to be shaped to a uniform thickness to be used as part of the stuffing of the textile product described below.

[0158] (Textile products) The stuffing made of the above-mentioned processed yarn was filled into the outer fabric made of polyester fabric, and 100g of granular cotton made of polyester was filled in the lower layer of the stuffing so that the thickness was uniform, and a sample simulating a pillow with a total stuffing mass of 500g was prepared. The mass ratio c of the deodorant fiber in the total mass of the stuffing in Example 9 was 38% by mass.

[0159] The stuffing of Example 9 had a deodorizing rate of 81% before washing and 75% after washing, and the deodorizing performance did not decrease much due to washing, and good deodorizing performance could be sustained. In addition, when the sample was felt to the touch, it felt as if the hand was wrapped when pressed into the stuffing from above, but it had poor elasticity.

[0160] [Comparative Example 1] A textured yarn, a filling and a fiber product were produced in the same manner as in Example 1, except that Fiber A, Fiber B-1 and Fiber B-2 were each made of PET1.

[0161] The textured yarn of Comparative Example 1 had a bulky structure with protruding loops made of the sheath yarn. In addition, fiber B opened each single fiber to form loops, and had excellent uniformity in the loop formation cycle.

[0162] In Comparative Example 1, since no deodorizing fiber is included, the mass proportion c of the deodorizing fiber in the total mass of the stuffing is 0 mass %.

[0163] The stuffing of Comparative Example 1 had a deodorizing rate of 20% before washing and 16% after washing, and failed the deodorizing rate standard, presumably because the odorous components were adsorbed and reduced due to the large surface area of ​​Fiber B. In addition, when the sample was felt to the touch, it had a good texture, with a feeling of fitting as if the hand was wrapped around it when pressed down with the hand from above, and a feeling of elasticity that gradually sunk in.

[0164] [Table 1] [Explanation of symbols]

[0165] 1 Fiber A (core thread) 2 Fiber B (sheath thread) 3. Textured Yarn Centerline 4 Thread guide 5. Distance from center line of textured yarn to top of loop 6 Suction nozzle 7. Pivot Point 8 Textured Yarn 9 Take-off roller 10 Heater 11 Delivery Roller 12 Winder 13 Supply roller 14 Compressed air injection angle

Claims

1. The stuffing includes a processed yarn in which a fiber A and a fiber B relatively longer than the fiber A are integrated, and at least the fiber B contains a deodorizing fiber.

2. 2. The filling of claim 1, wherein said fibers B form loops.

3. The stuffing according to claim 1 or 2, wherein the deodorizing fiber contained in the fiber B is a polyurethane-based fiber.

4. The stuffing according to claim 1 or 2, wherein the deodorizing fiber is contained in an amount of 10% by mass or more based on the total amount of the stuffing.

5. A textile product comprising a filling according to claim 1 or 2.

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