Hydrophilic agent for padding, padding and textile products thereof

Abstract

To provide: a hydrophilic agent for an inner cotton by which water easily penetrates to the interior, thereby cable of washing thoroughly to the interior and obtaining a fiber product that is safe, clean and comfortable; an inner cotton; and a fiber product thereof.SOLUTION: An inner cotton and a fiber product are obtained by using a hydrophilic agent for the inner cotton composed of polyester-polyether block copolymer having an HLB of 5 or more, which is composed of terephthalic acid and / or isophthalic acid, lower alkylene glycol, and polyalkylene glycol and / or monoether thereof.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a hydrophilic agent for fillings, fillings, and textile products using the same, which allow water to easily penetrate into the interior and can be washed thoroughly to the inside, thereby producing safe, clean, and comfortable textile products. [Background technology]

[0002] Various textile products, such as batting and futons made of synthetic fibers such as polyester fibers, have been proposed (e.g., Patent Documents 1 and 2). In light of the recent COVID-19 pandemic, safety, cleanliness, and comfort are particularly required for textile products such as household bedding, interior goods, and clothing. For example, bedding interior items such as futons, pillows, cushions (including body pillows), carpets, and sleeping bags, plush toys, and down jackets are often large textile products that are difficult to wash easily or frequently at home compared to everyday clothing items such as socks, underwear, slacks, and skirts. These large textile products are often endowed with antibacterial, antiviral, anti-mite, and other functional properties.

[0003] Recently, the number of pet owners has increased, and with the popularity of small pets, the number of people keeping them indoors is also increasing year by year, resulting in a diversification of the functionality required.Furthermore, the number of people suffering from allergies such as atopic dermatitis and childhood asthma is on the rise year by year, and so there is growing interest in safe, clean, and comfortable textile products.

[0004] To meet such demands, proposed functional agents for fibers and methods for applying them include a method of kneading the functional agent into the fiber during the spinning stage, and a method of applying a treatment agent containing the functional agent to the surface of the fiber, etc. However, there is a problem that these methods cannot be applied to young infants.

[0005] In addition, various large textile products filled with batting do not mix well with water, and when trying to wash them at home, the products float and cannot be washed, or they leak water. In the case of closed-type washing, although it may appear that the products have been washed, the water does not penetrate deep into the batting, resulting in insufficient cleaning.

[0006] On the other hand, natural fibers such as wool, cotton, and feathers are preferred as safe filling materials that can be used by infants and young children. However, when washing and drying, as a countermeasure against allergies caused by house dust, the filling swells and shrinks, and feathers can break and blow out, or they lose bulk and cannot fully function as filling. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-125153 [Patent Document 2] Japanese Patent Application Laid-Open No. 2014-79367 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention has been made in view of the above background, and an object of the present invention is to provide a hydrophilic agent for fillings, fillings, and textile products thereof, which allow water to easily penetrate into the interior, thereby enabling clean washing to the inside, and which enable safe, clean, and comfortable textile products to be obtained. [Means for solving the problem]

[0009] The present inventors have conducted extensive research to achieve the above object, and as a result have completed the present invention.

[0010] Thus, according to the present invention, there is provided a hydrophilic agent for padding, characterized in that it comprises a polyester polyether block copolymer having an HLB of 5 or more, which comprises terephthalic acid and / or isophthalic acid, a lower alkylene glycol, and a polyalkylene glycol and / or its monoether. In this case, it is preferable that the average molecular weight of the polyalkylene glycol is 1,000 to 4,000, and the average molecular weight of the polyester polyether block copolymer is 4,000 to 9,000.

[0011] The present invention also provides a filling containing synthetic fibers, wherein the hydrophilic agent is adhered to the synthetic fibers in an amount of 0.15 to 0.80% by weight based on the weight of the fibers. In this case, it is preferable that the hydrophilicity (sedimentation method) is 20 seconds or less and the number of repeated sedimentation steps is 3 or more. The present invention also provides a textile product containing the above-mentioned filling and having a moisture content of 500% or more. In this case, the textile product is preferably any one selected from the group consisting of futons, pillows, cushions, stuffed toys, down jackets, sleeping bags, carpets, and various pads. [Effects of the Invention]

[0012] According to the present invention, a hydrophilic agent for fillings, fillings, and textile products can be obtained that allow water to easily penetrate to the inside and can be washed thoroughly to the inside, thereby producing safe, clean, and comfortable textile products. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, embodiments for carrying out the present invention will be described in detail, but the present invention is not limited to these.

[0014] First, the hydrophilic agent for padding of the present invention (hereinafter sometimes referred to as "hydrophilic agent" or "fiber hydrophilic agent") is a polyester polyether block copolymer comprising terephthalic acid and / or isophthalic acid, a lower alkylene glycol, and a polyalkylene glycol and / or its monoether, and having an HLB of 5 or more (preferably 5 to 18, more preferably 7 to 16).

[0015] Here, examples of hydrophilic groups in polyester polyether copolymers having an HLB of 5 or more derived from the Griffin formula include acid groups such as carboxyl groups, sulfonic acid groups, and phosphate groups, basic groups such as amino groups, ammonium salts, and metal complex salts, hydroxyl groups, and ethylene oxide groups. Moieties other than these hydrophilic groups are considered to be hydrophobic groups, and for example, alkylene oxide groups having 3 or more carbon atoms are hydrophobic groups. [Griffin's formula] HLB = (100 / 5) × hydrophilic group weight / (hydrophilic group weight + hydrophobic group weight)

[0016] When the hydrophilic agent for fibers is nonionic, the HLB can be calculated from the weight of the hydrophilic group and the weight of the hydrophobic group using the Griffin formula. For example, the HLB of nonylphenol, which is an ethylene oxide 8-mol adduct, is CH 17 Applying the Griffin formula to the HLB of C6H4O(C2H4O)8H gives an HLB of 12.3.

[0017] On the other hand, in the case of ionic hydrophilic agents for fibers, the hydrophilicity of the hydrophilic group is generally greater than that of nonionic ones, and the degree of hydrophilicity per unit weight varies depending on the type of hydrophilic group, but ionic hydrophilic agents for fibers in which the hydrophilicity of the hydrophilic group is greater than that of nonionic ones can have an HLB value of greater than 5. The HLB value is described, for example, in "New Introduction to Surfactants" (by Takehiko Fujimoto, 4th edition, October 1996, published by Sanyo Chemical Industries, Ltd.).

[0018] In the hydrophilic agent, examples of lower alkylene glycols include ethylene glycol, propylene glycol, and tetramethylene glycol. Examples of polyalkylene glycols include polyethylene glycol, polyethylene glycol-polypropylene glycol copolymers, and polypropylene glycol. Examples of monoethers of polyalkylene glycols include monomethyl ethers, monoethyl ethers, and monophenyl ethers of polyethylene glycol, polypropylene glycol, and the like.

[0019] Here, the polyalkylene glycol preferably has an average molecular weight of 200 to 4000. The polyester polyether block copolymer preferably has an average molecular weight of 4000 to 20000. Considering the processability of carding and other processes in producing the padding, and the water absorption and washing durability that affect the washing performance of the padding and its textile products, the polyalkylene glycol preferably has an average molecular weight of 1000 to 4000, and the polyester polyether block copolymer preferably has an average molecular weight of 4000 to 10000. The average molecular weights are weight average molecular weights.

[0020] For example, examples of polyester polyether block copolymers composed of terephthalic acid and / or isophthalic acid, lower alkylene glycol, and polyalkylene glycol and / or its monoether include terephthalic acid-alkylene glycol-polyalkylene glycol, terephthalic acid-isophthalic acid-alkylene glycol-polyalkylene glycol, terephthalic acid-alkylene glycol-polyalkylene glycol monoether, etc. In this case, examples of the monoether of polyalkylene glycol include monomethyl ether, monoethyl ether, monophenyl ether, etc. of polyethylene glycol, polypropylene glycol, etc.

[0021] The padding of the present invention is a padding containing synthetic fibers, and the hydrophilic agent is attached to the synthetic fibers in an amount of 0.15 to 0.80% by weight (more preferably 0.20 to 0.60% by weight) based on the weight of the fibers.

[0022] If the amount of the treatment agent applied is less than 0.15% by weight, the surface of the synthetic fiber is rendered hydrophilic, resulting in wettability. However, textile products such as comforters and pillows made with the fiber filling may be difficult to penetrate with water, making it difficult to wash thoroughly and thoroughly. Taking single-size comforters as an example, bulky winter comforters filled with 1.2 to 1.5 kg of filling may be difficult to wash thoroughly and thoroughly. On the other hand, if the amount of the treatment agent applied is greater than 0.80% by weight, the increased amount of the treatment agent may allow water to penetrate the product, even for bulky winter comforters filled with 1.2 to 1.5 kg of filling, making it easy to wash thoroughly and thoroughly. However, production control of the amount of treatment agent applied during the synthetic fiber raw cotton production process may be difficult, making stable productivity difficult.

[0023] The hydrophilicity (sedimentation method) of the filling is preferably 20 seconds or less (more preferably 0.1 to 15 seconds). In particular, it is preferably 20 seconds or less (more preferably 0.1 to 15 seconds) after 10 washes (JISL0217-103 method (flat drying, net, loaded cloth)). It is also preferably repeated sedation 3 or more times (more preferably 3 to 10 times).

[0024] When applying the hydrophilic agent to synthetic fibers, it is preferable to apply a treatment agent containing 80% or more by weight of the hydrophilic agent to the fiber surface in terms of the emulsion stability and handleability of the hydrophilic agent. In this case, it is preferable to attach the hydrophilic agent to the fiber as a treatment agent such as a polymer emulsifier and / or surfactant. In addition, as long as the properties of the hydrophilic agent are not impaired, electrostatic agents (antistatic agents), defoamers, antibacterial agents, discoloration inhibitors, etc. may be added in combination with the treatment agent so as not to impair the passability of processes such as carding when producing a futon made of synthetic fibers (such as polyester fibers) or the properties of the filling.

[0025] The method for applying such a treatment agent to synthetic fibers can be any conventionally known method, and can be any method after fiber formation. Among these, the method of applying the treatment agent during the spinning or cotton-making process is preferred, and it is particularly preferred to apply the treatment agent at a stage after the drawing process and before the heat treatment. In a typical treatment method, such a treatment agent is applied to the drawn fiber by immersion, oiling roller method, spray method, or the like.

[0026] For example, in the cotton manufacturing process, after applying such a treatment agent, the fiber is heat-treated, then crimped, cut to a desired short fiber length, and then aged. The order of the cutting and aging steps does not matter, and aging may be omitted. Furthermore, the material is treated with a treatment agent containing the hydrophilic agent and then subjected to necessary heat treatment, but before or after this, it may be treated with an electrostatic agent (antistatic agent), a defoaming agent, an antibacterial agent, a discoloration inhibitor, etc. The treatment method may be any method.

[0027] The filling of the present invention can be effectively achieved by blending natural fibers such as cotton or wool with synthetic fibers. However, if the fibers themselves absorb and retain water (swell), the water permeability of fillings and products blended with fibers with high water absorption rates will not be impaired during washing. On the other hand, if the fibers themselves have high water absorption and retention (swelling) properties, this may affect dehydration during dehydration after washing, potentially reducing the drying characteristics of the filling and products. In other words, slow drying or semi-drying may result in unpleasant odors due to the influence of bacteria (such as Staphylococcus aureus and Moraxella) on the fibers. Therefore, it is preferable to use textile products made with a combination of materials that dry quickly (such as filling, lining, and hems, as well as planning and design), or to devise ways to dry them under conditions and in an environment that facilitates drying.

[0028] In the present invention, the synthetic fiber is not particularly limited as long as it is made of a fiber-forming polymer that can be spun and drawn, and may be any of fibers obtained by melt-spinning polyester fiber, polyamide fiber, polyolefin fiber, etc., or fibers obtained by dry or wet spinning such as acetate fiber, rayon fiber, polyvinyl chloride fiber, acrylic fiber, aromatic polyamide fiber, etc.

[0029] For example, when used as batting (wadding) for a futon or the like, lightweight, bulky, heat-retaining, breathable, washable and quick-drying properties are required, and from these viewpoints polyester fibers are particularly preferred.

[0030] Preferred examples of polyesters for forming such polyester fibers include polyesters such as polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polylactic acid, stereocomplex polylactic acid, and copolymer polyesters copolymerized with a third component. Such polyesters may be material- or chemically-recycled polyesters, or polyethylene terephthalate, which is obtained using monomer components derived from biomass, i.e., biologically derived materials, as described in JP-A-2009-091694. Furthermore, polyesters obtained using catalysts containing specific phosphorus compounds and titanium compounds, as described in JP-A-2004-270097 and JP-A-2004-211268, may also be used.

[0031] The synthetic fibers may be, for example, long fibers or short fibers, processed yarns or spun yarns. However, when used as filling (wadding) in futons and the like, crimped short fibers (raw cotton) are preferred. There are no particular restrictions on the crimp characteristics (number of crimps, degree of crimp, residual crimp, bulkiness, etc.), cut length, fiber diameter (fineness), or cross-sectional shape, which may be appropriately set depending on the intended use. However, a single fiber fineness of 0.5 to 17 dtex (more preferably 3.0 to 9.5 dtex, and particularly preferably 5.0 to 8.0 dtex) and a cut length of 30 to 76 mm are preferred for their versatility.

[0032] The synthetic fibers are preferably crimped to improve bulkiness. Crimping methods include spiral crimping using composite fibers made by bonding polymers with different thermal shrinkage rates side-by-side, spiral crimping by anisotropic cooling, or mechanical crimping using a conventional press-in crimper. Mechanical crimping is optimal from the perspectives of bulkiness, production costs, and the like. In this case, the number of crimps is preferably 5 crimps / 25.4 mm or more (more preferably 7 to 15 crimps / 2.54 cm). If the number of crimps is less than 5 crimps / 2.54 cm, the entanglement between the individual fibers is insufficient, resulting in reduced bulkiness and potentially impaired heat retention of the filling. Conversely, if the number of crimps exceeds 15 / 2.54 cm, the entanglement of single fibers may be too great and sufficient carding may not be achieved in the opening process such as carding. The crimp percentage is preferably in the range of 15 to 35% (more preferably 20 to 30%). The number of crimps and crimp percentage can be measured according to JIS L 1015.

[0033] The cross-sectional shape of the synthetic fiber monofilament is not particularly limited, and may be any of a round cross section, a ten-section cross section, an H-section cross section, a T-section cross section, a Y-section cross section, a modified multi-fin cross section, a hollow cross section, etc. For example, a hollow cross section with a hollow ratio of 10 to 50% is preferable because it provides excellent heat retention. Furthermore, the polymer may contain one or more of the following as needed, within the scope of the present invention, including a micropore-forming agent, a cationic dye dyeable agent, a coloring inhibitor, a heat stabilizer, a fluorescent whitening agent, a matting agent, a colorant, a moisture absorbent, and inorganic fine particles.

[0034] The textile product of the present invention contains the aforementioned batting. In this case, the moisture content of the textile product is preferably 500% or more (more preferably 1000 to 10000%). Examples of such textile products include futons (such as seat cushions, kotatsu futons, comforters, and mattresses), pillows, cushions, stuffed toys, down jackets, padded jackets, sleeping bags, carpets, various pads, sportswear, workwear, protective clothing, and cold weather clothing, as well as nonwoven fabrics and woven and knitted fabrics for interior use, such as carpets and curtains.

[0035] In the batting and textile products of the present invention, the synthetic fiber surface is imparted with hydrophilicity. Even in batting that has been opened (mechanically opened by carding or air-opening, etc.), the hydrophilic agent attached to the surface of the single fiber improves wettability (fast settling due to the hydrophilic effect), making it easier for water to be trapped between the single fibers of the batting, allowing water to quickly penetrate and be retained inside the batting. As a result, the batting and its textile products have the property of quickly penetrating water, and when poured into a household washing machine (either a top-loading washing machine or a drum-loading washing machine, but top-loading washing machines are particularly difficult to wash), problems such as overflowing or floating products that cannot be washed can be avoided. Water penetrates deep into the product, allowing not only the exterior of the product but also the interior (batting) to be thoroughly washed. It also has a repeated washing durability equivalent to five years (two washes per year). [Example]

[0036] Examples and comparative examples of the present invention will be described in detail below, but the present invention is not limited to these. The measurement items during the implementation were measured by the following methods.

[0037] (1) Average molecular weight: The average molecular weight is a weight average molecular weight, and was determined by gel permeation chromatography (GPC).

[0038] (2) HLB: Calculated using the Griffin formula below. HLB=(100 / 5)×Hydrophilic group weight / (Hydrophilic group weight + Hydrophobic group weight)

[0039] (3) Amount of treatment agent attached (wt%): OPU The ratio of the weight of the fiber after bone-drying with the treatment agent attached to the weight of the fiber after bone-drying after degreasing was calculated. In addition, the amount of hydrophilic agent attached was calculated from the compounding ratio of the hydrophilic agent (solid content) contained in the treatment agent (solid content).

[0040] (4) Hydrophilicity (sedimentation method): In accordance with JIS L1912 water absorption (water absorption time), the time it took for a test piece of a given weight of padding or other material to become completely wet was measured using test pieces after 0, 3, and 10 washes. The shorter the time, the more hydrophilic / more easily water-absorbed the material is. In this case, the washing process will conform to JIS L0217-103 method (flat drying, net, use of loaded cloth).

[0041] (5) Repeated hydrophilicity (durability): In accordance with JIS L1912 water absorption (water absorption time), the time until a test piece of a specified weight of padding or other material becomes completely wet is measured, and after dehydration, drying, and complete drying, the time until a test piece of a specified weight of padding or other material becomes completely wet is measured three times and the average is calculated. Note that test pieces that take more than 60 seconds on the third try are not eligible for measurement. The shorter the time, the more hydrophilic / more susceptible to water penetration. Those for which the average of three tries can be calculated have more durable hydrophilicity (durable water penetration).

[0042] (6) Residual moisture content: 4.0 g of padding was dried and conditioned in a 20°C x 65% RH atmosphere, and a specified amount of water was dropped onto it. The weight was measured immediately after the dropping and every 60 minutes, and the residual moisture content was calculated using the following formula, and the slope (= residual moisture content / elapsed time) was calculated as the dryness. The larger the slope, the better the quick-drying property. Residual moisture content (%) = (amount of moisture every 60 minutes (g) / amount of moisture immediately after dripping (g)) x 100

[0043] (7) Moisture content (reference value): In accordance with JIS L1912 water absorption (water absorption time), a test piece of a specified weight of padding or other material is completely wetted and weighed, and the moisture retention (moisture content) rate is calculated from the weight of the test piece before and after wetting. After that, the test piece is dehydrated, dried, and completely dried, and the moisture content test is repeated, and the average value of N=3 is calculated. The higher the moisture content, the easier it is for water to penetrate.

[0044] (8) Washing method: In accordance with JIS L1930 C4G, hang dry.

[0045] (9) Dimensional change: A comforter (single size) was washed 10 times in accordance with JIS L1909, and the dimensional change of the textile product and the presence or absence of uneven filling were measured.

[0046] (10) Home washing characteristics: We tested whether a duvet (single size) could be washed in a home washing machine (vertical type, 10 kg capacity: Panasonic NA-FA100H5) by placing it in a laundry net (Diamond Corporation's Inflatable Laundry Net, Extra Large 70). It has been confirmed in advance that textile products that can be washed in a vertical washing machine for home use can also be easily washed in a closed drum washing machine, so the examples of the present invention were verified using a vertical washing machine.

[0047] [Example 1] Polyethylene terephthalate having an intrinsic viscosity of 0.6 was melt extruded through a spinneret having a hole diameter of 0.3 mm, 180 holes, and 24 spindles at a spinning temperature of 300°C and a throughput of 560 g / min, and spun at a take-up speed of 1,050 m / min. The extruded fibers were stretched in warm water at 70°C to a draw ratio of 2.9 at a draw speed of 30 m / min, and then in warm water at 90°C to a constant draw ratio of 150 m / min. After cylinder drying, the extruded fibers were immersed in an oil bath containing a treatment agent containing a fiber hydrophilic agent (hereinafter, Reference 1), wrung with a crimper, cut to a length of 51 mm, and dried at 170°C to obtain polyester staple fibers having a treatment agent (solid content) adhesion amount of OPU 0.80%, a single fiber fineness of 6.6 dtex, a crimp number of 10.5 crimps / 2.54 cm, and a crimp percentage of 26%.

[0048] The resulting short fibers were treated as 100% polyester fibers (T100) and were washed, and the hydrophilicity and other properties were evaluated after three and ten washes. The obtained 100% polyester fiber (T100) was used to make a quilt (single size: cover fabric is 100% polyester fiber Micro Silstar (TN187H) manufactured by Teijin Frontier Co., Ltd., batting filling amount 1.2 kg) by opening and cross laying the fibers. The results are shown in Table 1.

[0049] (Reference 1) Polyester polyether copolymer average molecular weight: 4900 Average molecular weight of polyethylene glycol monophenyl ether, number of moles: 3000, 1 Average molecular weight of polyethylene glycol monophenyl ether moiety: 3000

[0050] [Example 2] The fabric was treated and evaluated in the same manner as in Example 1, except that it was immersed in an oil bath of a treatment agent containing a hydrophilic agent for fibers, and the squeezing pressure was changed with a crimper so that the amount of treatment agent (solid content) attached after drying at 170°C was 0.15% OPU. The results are shown in Table 1.

[0051] [Example 3] Treatment and evaluation were carried out in the same manner as in Example 1, except that the hydrophilic agent for fibers was changed to Reference 2. The results are shown in Table 1.

[0052] (Reference 2) Polyester polyether copolymer average molecular weight: 7700 Average molecular weight of polyethylene glycol monophenyl ether, number of moles: 1000, 2 Average molecular weight of polyethylene glycol monophenyl ether moiety: 2000

[0053] [Example 4] Treatment and evaluation were carried out in the same manner as in Example 1, except that the hydrophilic agent for fibers was changed to Reference 3. The results are shown in Table 1.

[0054] (Reference 3) Polyester polyether copolymer average molecular weight: 6900 Average molecular weight of polyethylene glycol monophenyl ether, number of moles: 3100, 1 Average molecular weight of polyethylene glycol monophenyl ether moiety: 3100

[0055] [Example 5] Treatment and evaluation were carried out in the same manner as in Example 1, except that the hydrophilic agent for fibers was changed to Reference 4. The results are shown in Table 1.

[0056] (Reference 4) Polyester polyether copolymer average molecular weight: 9050 Average molecular weight of polyethylene glycol monophenyl ether, number of moles: 3100, 2 Average molecular weight of polyethylene glycol monophenyl ether moiety: 6200

[0057] [Comparative Example 1] Treatment and evaluation were carried out in the same manner as in Example 1, except that the hydrophilic agent for fibers was changed to Reference 5. The results are shown in Table 1.

[0058] (Reference 5) · Polyester polyether copolymer average molecular weight: 10,000 Average molecular weight of polyethylene glycol monophenyl ether, number of moles: 1000, 2 Average molecular weight of polyethylene glycol monophenyl ether moiety: 2000

[0059] Comparative Example 2 The fabric was treated and evaluated in the same manner as in Example 1, except that the fabric was immersed in an oil bath with a fiber treatment agent containing a water repellent for fibers (silicone-based) instead of a hydrophilic agent for fibers, and the squeezing pressure was changed with a crimper to set the amount of treatment agent (solid content) adhered after drying at 170°C to OPU 0.2%. The results are shown in Table 1.

[0060] [Table 1] [Industrial Applicability]

[0061] According to the present invention, a hydrophilic agent for batting, batting, and textile product thereof can be obtained, which can be washed thoroughly to the inside by allowing water to easily penetrate to the inside, and which is safe, clean, and comfortable, and which has extremely great industrial value.

Claims

1. A padding containing synthetic fibers made of polyethylene terephthalate, a hydrophilic agent for filling comprising a polyester polyether block copolymer having an HLB of 5 or more, the polyester polyether block copolymer comprising terephthalic acid and / or isophthalic acid, a lower alkylene glycol, and a polyalkylene glycol and / or a monoether thereof, the polyalkylene glycol having an average molecular weight of 2000 to 4000, and the polyester polyether block copolymer having an average molecular weight of 4000 to 9000, and the hydrophilic agent for filling is adhered to synthetic fibers in an amount of 0.15 to 0.80% by weight based on the weight of the fibers; The hydrophilicity (sedimentation method) is 20 seconds or less, and the number of repeated sedimentation steps is 3 or more, The synthetic fiber filling is characterized in that the single fiber fineness is 5.0 to 8.0 dtex, the cut length is 30 to 76 mm, the number of crimps is 7 to 15 per 2.54 cm, and the crimp rate is 15 to 35%.

2. A textile product containing the filling described in claim 1 and having a moisture content of 500% or more.

3. 3. The textile product according to claim 2, which is any one selected from the group consisting of futons, pillows, cushions, stuffed toys, down jackets, sleeping bags, carpets, and various pads.

Images