Inner cotton and fiber product of the same

Abstract

To provide an inner cotton having physical properties similar to those before compressive packaging, even after compressive packaging of a fiber product containing an inner cotton is opened, and a fiber product containing the same.SOLUTION: There is provided an inner cotton in which silicone-based surface-treated synthetic fibers that are hollow and flatly crimped are main fibers. Preferably, fineness of the main fiber is within a range of 4 to 20 dtex, and the synthetic fibers as the main fibers are polyethylene terephthalate fibers. It is preferable to contain polytrimethylene terephthalate fibers, and to contain hollow fibers other than the main fibers. It is also preferable to contain solid crimp fibers, and preferably, the solid crimp fibers are hollow fibers and polytrimethylene terephthalate fibers. There is also provided a fiber product using the inner cotton.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a filling having excellent compression resistance, which is optimal for textile products such as comforters and pillows filled with filling, and to a textile product using the filling. [Background technology]

[0002] Various fiber products, such as padding and comforters, made of synthetic fibers such as polyester fibers have been proposed so far. Among them, hollow fibers are widely used due to their high heat retention properties (for example, Patent Documents 1 and 2).

[0003] By the way, textile products such as household bedding, interior goods, and clothing, especially textile products containing batting, contain a large amount of air and are generally bulky. Therefore, in line with the recent trend of reducing environmental impact, there has been a strong demand for products that can be compressed and packed for transportation, contributing to reducing transportation costs and energy and reducing storage space. This is because if the products are not compressed and packed, the efficiency of transportation energy (transportation costs, transportation volume, energy emissions, etc.) will be significantly reduced.

[0004] In particular, large textile products containing padding, such as futons, pillows, cushions (including body pillows), carpets, sleeping bags, and other bedding interior items, plush toys, and clothing items such as down jackets, are bulkier than other general clothing and other textile products, so there was a demand for them to be able to be compressed and packed more easily.

[0005] Also, expensive down comforters are often not compressed and packed, while some washable down comforters are compressed and packed, but there are cases where they are, and there are no particular problems with recovery. On the other hand, although synthetic fiber filling has superior bulkiness compared to down and the like, if it is forcibly compressed and packed temporarily, the compressed and packed textile product will feel sagging when it is unpacked for display in a store or for use at home after transportation and storage, and furthermore, there is a problem that the texture and product performance (hindered heat retention due to sagging, lack of fit due to paper-like feel, etc.) will be deteriorated by the compression and packaging. In particular, products that use filling are often textile products that appeal to functionality such as heat retention and soft texture, and there was a problem that the expected performance was not expressed by compressing and packaging.

[0006] In particular, recent synthetic fiber batting is not only hollow fiber, but also uses many three-dimensionally crimped (spiral crimped) fibers obtained by bonding polymers with different polymerization degrees side-by-side, conjugating them, and stretching them, or by applying anisotropic cooling during the spinning process. Although these three-dimensionally crimped staple fibers (raw cotton) and textile products using these fibers as batting can ensure high heat retention, they have problems in that they do not lose volume easily even when compressed, and conversely, they do not regain their volume easily when opened (the crimp is strong and the fibers are difficult to untangle).

[0007] In response to this demand, various oils and the like have been proposed as methods for facilitating untangling of fibers, but these are still not sufficient. Currently, in order to avoid deterioration in quality, it is often chosen to avoid compressing products (not compressing and packaging), and there has been a long awaited development of a filling material with excellent compression resistance that is suitable for large textile products, in which filling material is often used. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Publication No. 56-76915 [Patent Document 2] Japanese Patent Application Publication No. 1-260050 Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention has been made in consideration of the above-mentioned background, and an object of the present invention is to provide a filling and a textile product containing the same which have physical properties similar to those before the compressed packaging even after the compressed packaging is opened. [Means for solving the problem]

[0010] The filling of the present invention is characterized in that the main fiber is a synthetic fiber that has been surface-treated with a silicone-based material and is hollow and planar crimped. Furthermore, it is preferable that the fineness of the main fiber is in the range of 4 to 20 dtex, and that the main synthetic fiber is a polyethylene terephthalate fiber. Also, it is preferable that the filling of the present invention contains a polytrimethylene terephthalate fiber and contains a hollow fiber other than the main fiber. The filling of the present invention also preferably contains three-dimensionally crimped fibers, and it is also preferable that the three-dimensionally crimped fibers are hollow fibers or that the three-dimensionally crimped fibers are polytrimethylene terephthalate fibers.

[0011] Another textile product of the present invention is a textile product using the filling of the present invention. Furthermore, 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 such as mattress pads. Effect of the Invention

[0012] According to the present invention, there are provided filling materials and textile products containing the same which have the same physical properties even after the compressed packaging is opened as those before the compressed packaging. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The following describes in detail the embodiments of the present invention, but the present invention is not limited thereto. The filling of the present invention is characterized in that the main fiber is a synthetic fiber that has been surface-treated with a silicone-based material and is hollow and planar crimped.

[0014] Here, the synthetic fiber constituting the main fiber of the filling of the present invention is preferably a polyester fiber. Further, preferred examples of the polyester forming the polyester fiber include polyesters such as polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polylactic acid, stereocomplex polylactic acid, and copolymer polyesters copolymerized with a third component.

[0015] Among these, in terms of the balance between physical properties and economic efficiency, it is preferable that the synthetic fiber serving as the main fiber is a polyester fiber, and in particular a polyethylene terephthalate fiber. It is also preferable to contain polytrimethylene terephthalate fiber as the main fiber or as another fiber other than the main fiber. Although the compression resistance is slightly lower than when polyethylene terephthalate is used entirely, the filling has a soft feel.

[0016] Furthermore, the polymers used for the synthetic fibers may be synthetic resins such as polyesters that have been material recycled or chemically recycled, or polyethylene terephthalate that uses monomer components obtained from biomass, i.e., biologically derived substances, as described in JP-A-2009-091694. Furthermore, polymers such as polyesters obtained using catalysts containing specific phosphorus compounds and titanium compounds, as described in JP-A-2004-270097 and JP-A-2004-211268, are also preferably used.

[0017] Furthermore, the polymer that becomes the synthetic fiber may contain one or more of the following, if necessary, within the scope of the object of the present invention: a micropore-forming agent, a cationic dye-enabling agent, a coloring inhibitor, a heat stabilizer, a fluorescent brightening agent, a matting agent, a colorant, a moisture absorbent, and inorganic fine particles.

[0018] In addition, the synthetic fiber that is the main fiber of the present invention must be a fiber that has been surface-treated with a silicone-based material. The silicone-based surface treatment may be a surface treatment with a silicone resin, which is a polymer that contains silicon in the main chain. Amino- or hydroxy-modified polysiloxane may be used, and it is also preferable that the silicone resin is a cross-linked silicone resin. By cross-linking, the silicone resin is less likely to fall off from the fibers that make up the filling.

[0019] In particular, it is preferable that the fiber is treated with an oil containing polysiloxane, and the surface of the fiber is treated with an aqueous emulsion oil consisting of a mixture of amino-modified dimethylpolysiloxane / terminal hydroxy-modified dimethylpolysiloxane / aminoalkoxysilane. By carrying out such silicone-based surface treatment, it is possible to reduce friction between fibers (increase slippage), resulting in a filling that is soft and has excellent compressibility and compression recovery.

[0020] The silicone-based surface treatment agent used in the present invention is preferably an oil agent containing polysiloxane, and also preferably contains a phosphoric acid compound, an aliphatic compound, or a halogen-based compound, and further preferably contains an antioxidant, an antiseptic, an antistatic agent, etc.

[0021] The amount (opu) of such silicone-based oil agent adhered to the fiber is preferably in the range of 0.05 to 1%, more preferably 0.06 to 0.5%, particularly preferably 0.08 to 0.2%, even more preferably 0.1 to 0.15%, and particularly preferably 0.11% or less.

[0022] The method of applying such an oil to synthetic fibers can be any conventionally known method, and can be any method after fiber formation. Among them, the method of applying the oil during the spinning or cotton-making process is preferable, and it is particularly preferable to apply the oil at a stage after the drawing process and before the heat treatment.

[0023] In general treatment methods, such oils are applied to the fibers after drawing by immersion, oiling roller, spraying, etc. For example, in the cotton manufacturing process, after applying such oils, the fibers are heat-treated, then crimped, cut to any short fiber length, and then aged. The order of the cutting and aging steps does not matter, and aging may be omitted.

[0024] In addition, as long as the object is not impaired, the oil agent may contain an antistatic agent, an antifoaming agent, an anti-discoloration agent, etc., and further, before or after the heat treatment following the treatment with the oil agent, an antistatic agent, an antifoaming agent, an anti-discoloration agent, etc. may be applied.

[0025] The synthetic fibers, which are the main fibers used in the filling of the present invention, must be hollow fibers and planar crimped fibers (hereinafter sometimes referred to as "planar crimped hollow fibers"). The hollow fibers can be obtained by a conventional method, and the hollow ratio is preferably 2 to 50% of voids in the fiber cross section. It is more preferably 5 to 25%, particularly preferably 8.5 to 18.5%, more preferably 10.5 to 16.5%, and most preferably 12.5 to 14.5%. In general, increasing the hollow ratio improves heat retention, but the important effect of the present invention, compression resistance, tends to slightly decrease the hollows due to crushing or cracking.

[0026] The planar crimped fibers used in the filling of the present invention are different from so-called three-dimensional crimped fibers, in that the fibers are crimped in a zigzag pattern on a single plane. When compressed, the individual crimped fibers are easily folded and the volume is easily reduced (easily compressed). Moreover, because the individual crimped fibers do not become entangled more than necessary, the fibers tend to retain their original physical properties (bulk, etc.) when released from compression.

[0027] Furthermore, the planar crimp applied in the present invention is preferably configured with a zigzag structure of crimped fibers consisting of short straight lines and corners. The planar crimped fibers of the present invention are crimped with clear corners, which is different from the general three-dimensional crimped fibers that are configured with gentle curves due to their manufacturing method, and when compressed, stress is concentrated around the corners, making it easy to bend, and as a result, the volume of the filling is easily reduced. Conversely, when released from compression, the stress on the corners is rapidly reduced, making it easy for the volume of the filling to recover. Incidentally, three-dimensional crimp that is mainly configured with curves is difficult to compress and difficult to recover because stress is applied to each part evenly.

[0028] However, planar crimped hollow fibers have a problem in that the hollow fiber structure is easily crushed because the crimp is mechanically imparted, and from this viewpoint, a low hollow ratio and a large fineness are preferable, and a large fineness is also preferable for the sake of bulkiness. Specifically, a hollow ratio of less than 25%, particularly less than 20% or less than 15%, is preferable, and a fineness of 4 dtex or more, particularly 5 dtex or more or 6 dtex or more is preferable.

[0029] The method of imparting planar crimp is preferably mechanical crimping, and more preferably mechanical crimping using a press-in crimper. Incidentally, the mechanical crimping used for planar crimping makes it easier to adjust the degree of crimping, and makes it easier to obtain fibers of more uniform quality, compared to composite spinning, in which polymers with different polymerization degrees are bonded side-by-side, or anisotropic cooling treatment in an intermediate process, which are used for three-dimensional crimping.

[0030] By imparting such crimp to the synthetic fibers used in the filling of the present invention, the bulkiness and processability (filling molding, carding web process, etc.) are improved. In addition, as the planar crimped hollow fibers, it is sufficient that the properties of planar crimp are mainly exhibited, and a small amount of three-dimensional crimp may also be present. Specifically, it is preferable that the properties of linear zigzag crimp remain.

[0031] The hollow fibers used as the subject fibers in the present invention may be, for example, irregular hollow fibers having fins in the hollow, and it is also preferable that the cross section having other voids be an irregular cross section such as a C-section, an H-section, a T-section, or a Y-section.

[0032] The number of crimps (CN) of such crimped fibers is preferably in the range of 5 to 15 / 25 mm, more preferably 8 to 12 / 25 mm, and particularly preferably 7.5 to 10.5 / 25 mm. The degree of crimp (CD) is preferably in the range of 10 to 30, more preferably 15 to 25, and particularly preferably 16 to 22. Furthermore, the residual crimp (CR) is preferably within a specific range, more preferably 10 to 25%, more preferably 12 to 20%, and particularly preferably 13 to 19%. Moreover, the value of the residual crimp (CR) / crimp (CD) is preferably 0.85 or less. By using planar crimped hollow fibers within such numerical ranges as the main fibers, it is possible to obtain a filling that changes less in quality when compressed and released and is hollow and resistant to crushing.

[0033] Other preferred requirements for the main fiber include a fineness in the range of 4 to 20 dtex, more preferably 5 to 9 dtex, and particularly preferably 6.0 to 6.4 dtex. By using synthetic filling fibers with a relatively high fineness, it becomes easier to achieve both functional properties such as bulkiness, heat retention, and light weight of the filling, and the property of the filling quickly recovering even when compressed and packed. The cut length is preferably in the range of 20 to 200 mm, more preferably 32 to 76 mm, particularly 38 to 64 mm, and most preferably 45 to 55 mm.

[0034] The content of the main fiber in the filling may be the largest among the fibers constituting the filling. The content of the main fiber in the filling is preferably 30% by weight or more, more preferably 50% by weight or more, and particularly preferably 90% by weight or more. It is also preferable that the content of the main fiber in the filling is 100% by weight, i.e., the constituent fibers are composed only of the main fiber.

[0035] In the present invention, the main fiber constituting the filling has a structure such as a hollow form or planar crimp as described above, so that a filling having high compression resistance can be obtained. The filling of the present invention may contain fibers other than the main fibers in order to satisfy other requirements such as texture, etc. Examples of the fibers other than the main fibers include three-dimensional crimped fibers and solid fibers that do not have a hollow portion, and hollow three-dimensional crimped fibers are particularly preferred.

[0036] When the filling is made only of hollow three-dimensional crimped fibers as in the past, a large load is required to compress the volume sufficiently, and the hollow is easily crushed. However, in the present invention, since hollow planar crimped fibers are used as the main fiber, the volume is sufficiently reduced even with a small load, and the load is mainly applied to the planar crimped fibers, so even when three-dimensional crimped fibers are used in combination, the filling is easily reduced in bulk and maintains high physical properties when compressed and released.

[0037] As the fibers other than the main fibers constituting the filling of the present invention, it is preferable to use fibers with a hollow cross section, in which case the filling is more excellent in terms of bulk, elasticity, recovery, heat retention and light weight. An example of such a hollow fiber may be, for example, a deformed hollow with fins attached to the hollow, and the hollow ratio obtained by adding the hollow ratio obtained by the hollow + fins and the void ratio between the fins is preferably in the range of 30 to 80%. As cross sections having other voids, deformed cross sections such as a T cross section, an H cross section, a T cross section, and a Y cross section are also preferable.

[0038] In the present invention, it is also preferable that other fibers have been subjected to a silicone-based surface treatment, and the amount of oil applied is preferably in the range of 0.1 to 0.3%, and more preferably in the range of 0.1 to 0.2%.

[0039] As for the other fibers, when stiffness is required in addition to bulkiness, it is preferable to use thick fibers of 9.0 dtex or more, and when a soft feel is required, it is preferable to use fine fibers of less than 4.0 dtex. Of course, it is also acceptable to use a mixture of multiple other fibers. The cut length is preferably in the range of 30 to 76 mm, which is highly versatile.

[0040] As for the crimp properties of other fibers, it is preferable that the residual crimp (CR) is 20 or less, and the value of the residual crimp (CR) / crimp (CD) is 0.85 or less. As described above, it is also preferable to contain polytrimethylene terephthalate fiber as a fiber other than the main fiber, which results in a filling with excellent texture. Furthermore, it is preferable to use polyethylene terephthalate fiber as the main fiber of the planar crimped hollow fiber and polytrimethylene terephthalate fiber as a three-dimensional crimped fiber other than the main fiber, which results in a filling with an excellent balance between compression resistance and texture.

[0041] When the polytrimethylene terephthalate fiber is crimped, it may be planar crimped, but three-dimensional crimping is preferable, which results in a softer texture. The number of crimps (CN) is preferably in the range of 5 to 20 pieces / 25 mm, more preferably 15 pieces / 25 mm or less, and particularly preferably 9 pieces / 25 mm or less. Furthermore, the polytrimethylene terephthalate fiber is preferably a hollow fiber or a hollow fiber having projections (fins).

[0042] When such polytrimethylene terephthalate fibers are normal hollow fibers, the hollowness is preferably 20% or less, more preferably in the range of 2 to 14%. Other preferable requirements include a fineness of preferably 2 to 6 dtex, more preferably in the range of 3 to 4 dtex. The cut length of the fibers is preferably in the range of 38 to 64 mm, more preferably in the range of 50 to 55 mm.

[0043] In the case of hollow fibers having protrusions (fins), the porosity (the ratio of voids in the circumscribing circle of the fin) is preferably in the range of 30 to 80%, more preferably in the range of 50 to 70%. Other preferable requirements include a fineness in the range of 3 to 13 dtex, more preferably in the range of 4 to 11 dtex. The cut length of the fibers is preferably in the range of 32 to 76 mm, more preferably in the range of 51 to 64 mm.

[0044] In addition to the polytrimethylene terephthalate fiber, the filling material of the present invention preferably contains polyethylene terephthalate fiber as a fiber other than the main fiber. When the other fiber is a polyethylene terephthalate fiber, the crimp number (CN) is preferably in the range of 7 to 13 / 25 mm, more preferably in the range of 8.5 to 12.5 / 25 mm. The hollow ratio is preferably in the range of 25 to 35%, more preferably in the range of 26 to 34%. Other preferable requirements include a fineness in the range of 4 to 10 dtex, more preferably in the range of 6 to 8 dtex, and particularly preferably in the range of 6.5 to 7.5 dtex. The cut length of the fiber is preferably in the range of 30 to 80 mm, more preferably in the range of 32 to 76 mm, and particularly preferably in the range of 51 to 64 mm.

[0045] Furthermore, the filling of the present invention preferably contains both polytrimethylene terephthalate fiber and polyethylene terephthalate fiber as fibers other than the main fiber. These may be solid fibers or hollow or solid three-dimensional crimped fibers. In particular, it is preferable that the fibers other than the main fiber contain three-dimensional crimped fibers of polytrimethylene terephthalate fiber and polyethylene terephthalate fiber for the main fiber having planar crimp.

[0046] Another aspect of the present invention is a textile product using the filling of the present invention. Furthermore, 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 such as mattress pads. Such textile products using the filling of the present invention are lightweight, yet have the heat retention and bulkiness that the filling of the present invention has, and are textile products with excellent compression resistance.

[0047] The textile product of the present invention, when compressed, packed, transported or stored, has the same properties as a textile product that has been packed, transported or stored before or without compression, when opened and used, and has excellent recovery characteristics, so that the user does not feel that it has been compressed and packed. The filling of the present invention can be used, for example, as batting for futons and the like, and produces an excellent futon that is lightweight, bulky, has heat retention and breathability, and does not lose its fiber product properties even when compressed and packed.

[0048] Furthermore, the textile products using the filling of the present invention are preferably used as textile products containing filling such as padded jackets, sportswear, work clothes, protective clothing, cold weather clothing, sleeping bags, cushions, kotatsu futons, futons, pillows, mattress pads, pillow pads, and interior products containing filling such as carpets and kitchen mats. The effect is particularly favorable in large textile products that often require compression packaging, such as futons (futon filling) and kotatsu futons.

[0049] The filling and textile product of the present invention can provide a filling and textile product that quickly recovers when opened even after being compressed and packaged, does not feel compressed and packaged, or has the same bulk and texture as a textile product that has not been compressed and packaged, and has excellent compression resistance.

[0050] The textile products using the filling of the present invention can be effectively used for bedding products such as comforters, which are representative of large textile products. The compression packaging, transportation, and storage processes can be carried out without impairing the bulkiness and other characteristics of the textile products during transportation and storage, making it possible to reduce the amount of CO2 emissions associated with transportation and storage, making the textile products environmentally friendly. EXAMPLES

[0051] Examples and Comparative Examples of the present invention will now be described in detail, but the present invention is not limited thereto. Each measurement item during the implementation was measured by the following methods.

[0052] (1) Crimp characteristics According to JIS L 1015, "Shrinkage", "crimp number (crimp number: CN)", "crimp rate (crimp degree: CD)", and "residual crimp rate (residual crimp or residual crimp degree: CR)" were measured.

[0053] (2) Amount of oil applied (wt%) The OPU (%) was calculated as the ratio of the bone-dry weight of the fiber with oil applied to the bone-dry weight of the fiber after degreasing.

[0054] (3) Friction coefficient (F / Fμd) Measured according to JIS L1015 "Coefficient of friction".

[0055] (4) Bulkiness and recovery of the padding Measurements were made according to JIS L1097 "specific volume (bulkiness)" and "compressive elasticity (compressibility / recovery rate)".

[0056] (5) Compression recovery of futon (5-1) Recovery rate (mini futon) A mini version of a single comforter (1.5m wide x 2.1m long, 1.5kg of batting) was made, measuring 20cm square with 19g of batting, and after measuring the thickness of the comforter, it was placed in a sealed bag with a zipper as is (without folding, laid flat) and pressure sealed and packed. After that, a load of 3kg was placed on the 20cm square evenly so that no air was trapped in the sealed bag, and left for 2 weeks. The compression rate after pressure sealing and packaging was the ratio of the thickness reduced from the thickness before compression. Thereafter, the sealed bag was opened, and the thickness of the mini futon was measured immediately after opening, and after leaving it to stand for 1 day, 2 days, 3 days, and 7 days, and the recovery rate was calculated. Recovery rate (%)=100-((XY) / X)*100 X: Thickness before compression Y: The thickness after 2 weeks of compression, opening and then a specific time has passed.

[0057] (5-2) Recovery rate (single comforter) A single-use comforter (1.5m wide x 2.1m long, 1.5kg of batting) was folded in thirds at the 1.5m width and rolled lengthwise, then inserted into a sealed bag, compressed by 2 tons, heat sealed and packed. The compression rate during compression and packaging was the ratio of the thickness reduced from the uncompressed thickness. The futons were opened after 2 and 5 months of compressed packaging, and the thicknesses of the futons were measured immediately after opening, and after leaving them to rest for 1, 3, and 7 days, and the recovery rate was calculated in comparison with that of an uncompressed single-use futon. Recovery rate (%)=100-((XY) / X)*100 X: Uncompressed duvet thickness Y: The thickness of the duvet after a specific period of time has passed since it was opened after 2 or 5 months of compressed packaging.

[0058] [Example 1] Polyethylene terephthalate with an intrinsic viscosity of 0.6 was melt extruded from a spinneret with a hole diameter of 0.3 mm, 180 holes, and 24 spindles at a spinning temperature of 300° C. and a discharge rate of 560 g / min, spun at a take-up speed of 1050 m / min, stretched to a draw ratio of 2.9 times at a draw speed of 30 m / min in warm water at 70° C., and then stretched to a constant draw ratio of 150 m / min in warm water at 90° C. After subsequent cylinder drying, the extrusion was immersed in an oil bath containing polysiloxane (a water-based emulsion oil consisting of a mixture of amino-modified dimethylpolysiloxane / terminal hydroxy-modified dimethylpolysiloxane / aminoalkoxysilane), and mechanically crimped by squeezing with a press-in crimper. The fiber was then cut into a length of 51 mm and dried at 170°C to obtain short fibers with an oily coating amount of polysiloxane-containing OPU of 0.20%.

[0059] The staple fiber was a flat crimped hollow fiber with a fineness of 6.6 dtex and a hollowness of 13.5%, and also had a crimp number (CN) of 9 / 25 mm, a crimp degree (CD) of 19, a residual crimp degree (CR) of 16, a CR / CD value of 0.84, and an F / Fμd of 0.190. The obtained staple fibers were opened 100 wt% as the main fiber, and the obtained carded web was used to evaluate the bulkiness and recovery of the filling. The filling was used to make a mini futon and a single comforter. The futon fabric used was a plain weave fabric made of 100% polyester with a basis weight of 70 gsm. The obtained futons were compressed and packed, then opened, and the recovery rate was calculated. The results are shown in Tables 1 and 2.

[0060] [Example 2] In Example 1, the obtained short fibers were used as the main fibers in an amount of 50 wt %. The filling material was obtained in the same manner as in Example 1, using 30 wt% of three-dimensionally crimped hollow polytrimethylene terephthalate fiber (hereinafter referred to as "three-dimensionally crimped PTT") and 20 wt% of three-dimensionally crimped hollow polyethylene terephthalate fiber (hereinafter referred to as "three-dimensionally crimped PET1") as the blending materials. The three-dimensionally crimped PTT used had a size of 3.3 dtex × 51 mm, a circular cross-section hollow rate of 8%, was three-dimensionally crimped, had an OPU of 0.2% oil containing polysiloxane, a crimp number (CN) of 6.8 / 25 mm, and an F / Fμd of 0.21. The other three-dimensionally crimped PET1 used had dimensions of 6.6 dtex x 64 mm, a round cross-section hollow ratio of 30%, was three-dimensionally crimped, had an OPU of 0.2% polysiloxane-free oil, a short fiber crimp number (CN) of 11 / 25 mm, a crimp degree (CD) of 26, a residual crimp degree (CR) of 23, a CR / CD of 0.88, and an F / Fμd of 0.24. The texture was slightly softer than that of the filling in Example 1. The results are also shown in Table 1.

[0061] [Example 3] As in Example 2, the staple fiber obtained in Example 1 was used as the main fiber at 50 wt%. The three-dimensionally crimped PTT fiber and three-dimensionally crimped PET1 fiber used in Example 2 were used as the blending counterparts, but the ratio was changed from Example 2 to 20 wt% three-dimensionally crimped PTT fiber and 30 wt% three-dimensionally crimped PET1 fiber, and the filling was obtained in the same manner as in Example 2. The texture was slightly softer than that of the filling in Example 1, but firmer than that in Example 2. The results are also shown in Table 1.

[0062] [Comparative Example 1] A filling was obtained in the same manner as in Example 1, using only 100 wt% of polyester fiber (hereinafter referred to as "sterically crimped PET2") made of polyethylene terephthalate, 9.0 dtex x 76 mm, round cross section hollow rate 30%, three-dimensionally crimped, with 0.2% OPU of an oil agent containing polysiloxane attached, and F / F μd 0.19. The crimp number (CN) of the short fiber used was 9.5 / 25 mm, the degree of crimp (CD) was 22, the residual degree of crimp (CR) was 21, the CR / CD was 0.86, and the F / F μd was 0.19. The results are shown in Tables 1 and 2.

[0063] [Comparative Example 2] The main fiber used in Example 1 was not used, and instead 30 wt% of the three-dimensionally crimped PTT fiber used in Example 2, 20 wt% of the three-dimensionally crimped PET1 fiber, and 50 wt% of the three-dimensionally crimped PET2 fiber used in Comparative Example 1 were used to obtain a filling in the same manner as in Example 1. The results are also shown in Table 1.

[0064] [Comparative Example 3] The main fiber used in Example 1 was not used, and the three-dimensionally crimped PET1 fiber used in Example 2 was used at 100 wt %, and filling was obtained in the same manner as in Example 1. The results are shown in Tables 1 and 2.

[0065] [Table 1]

[0066] [Table 2]

Claims

1. The filling is characterized in that the main fiber is a synthetic fiber which has been surface-treated with a silicone system and which is hollow and flat crimped.

2. 2. The filling according to claim 1, wherein the fineness of the main fiber is in the range of 4 to 20 dtex.

3. 2. The filling according to claim 1, wherein the main synthetic fiber is a polyethylene terephthalate fiber.

4. 2. The batting of claim 1 which contains polytrimethylene terephthalate fibers.

5. 2. The filling according to claim 1, which contains hollow fibers in addition to the main fibers.

6. The filling of claim 1, which contains three-dimensionally crimped fibers.

7. The batting according to claim 6, wherein said three-dimensionally crimped fibers are hollow fibers.

8. The batting according to claim 6, wherein said three-dimensionally crimped fibers are polytrimethylene terephthalate fibers.

9. A textile product using the filling according to claim 1.

10. 10. The textile product according to claim 9, which is any one selected from the group consisting of futons, pillows, cushions, stuffed toys, down jackets, sleeping bags, carpets, and various pads such as mattress pads.

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