Padding yarn and inner cotton structure

Abstract

To provide a padding yarn 1 having controlled stretchability and an inner cotton structure including the same.SOLUTION: A padding yarn includes core yarns 2, 3 and a fancy yarn 4. The core yarns 2, 3 and the fancy yarn 4 are at least partially integrally entangled. The fancy yarn 4 is relatively longer than the core yarns 2, 3. The fancy yarn 4 is unstretchable yarn. The core yarns 2, 3 are formed by combining an unstretchable yarn 3 and a stretchable yarn 2 or combining a stretchable yarn having relatively higher stretchability than a stretchable yarn and a stretchable yarn having relatively low stretchability. In a manufacturing method of the padding yarn, the fancy yarn is supplied so as to be relatively longer than the core yarns, when the core yarns and the fancy yarn are supplied into a fluid entanglement device and subjected to integrally entangling processing. The unstretchable yarn and the stretchable yarn of the core yarns, or the stretchable yarn having relatively higher stretchability than the stretchable yarn and the stretchable yarn having relatively low stretchability are supplied so as to have constant length, or the stretchable yarn or the stretchable yarn having relatively high stretchability are extended and supplied.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to controlled stretch stuffing yarns and batting structures containing same. [Background technology]

[0002] The feathers used to fill feather products such as down comforters and down jackets are generally from waterfowl. Waterfowl include geese, ducks, and wild eiders that live on the coastlines of the Arctic Circle. There are two types of feathers: down, which is similar to chest hair, and feathers, both of which are used in feather products. Feathers are produced in Central Europe, including Poland and Hungary, Northern Europe, including the Scandinavian Peninsula, and China. Feathers are highly voluminous and warm, making them a high-quality material for feather products such as duvets and down jackets. However, natural feathers are dependent on waterfowl, and there is a limit to the supply, and the supply fluctuates depending on natural conditions and harmful diseases (such as avian viruses). From the perspective of nature conservation, there is also a limit to capturing wild birds. Furthermore, natural feathers can cause a foul odor if not washed properly, so it is necessary to remove any foul odor-causing contaminants beforehand and to maintain a certain level of cleanliness and oxygen count, which indicate the degree of feather cleaning. Another fundamental problem is that it is not easy to wash feather products such as down comforters and down jackets. Therefore, many proposals have been made regarding batting. In Patent Document 1, the applicant proposed a batting yarn that uses a stretch yarn as the core yarn and can be used to fill stretch fabrics, and a batting object using the same. Patent Document 2 proposes a textured yarn in which the core yarn is a multifilament made of polyurethane elastic fiber having a specific average molecular weight, and a batting using the same and a textile product containing the batting. Patent Document 3 proposes supplying two core yarns with different lengths to produce a highly bulky yarn. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7240207 [Patent Document 2] Japanese Patent Publication No. 2023-110885 [Patent Document 3] Japanese Patent Application Publication No. 2018-193642 Summary of the Invention [Problem to be solved by the invention]

[0004] However, Patent Document 1 has the problem that the elasticity of the stuffing thread (batting) is not controlled, Patent Document 2 has the problem that the core thread uses polyurethane elastic thread, which has a high degree of elongation and causes a large loss of shape when filled as stuffing, and Patent Document 3 has the problem that the core thread uses polyester multifilament thread, resulting in a lack of elasticity.

[0005] SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a stuffing yarn having controlled stretchability and a padding structure containing the same. [Means for solving the problem]

[0006] One embodiment of the present invention is a stuffing thread comprising a core thread (A) and an effect thread (B), At least a part of the core yarn (A) and the effect yarn (B) are integrated by entanglement, The effect thread (B) is relatively long compared to the core thread (A), The effect yarn (B) is a non-elastic yarn, The present invention relates to a stuffing yarn characterized in that the core yarn (A) is a combination of a non-elastic yarn (A1) and an elastic yarn (A2), or a combination of an elastic yarn (A3) having relatively higher elasticity than the elastic yarn (A4) and an elastic yarn (A4) having relatively lower elasticity.

[0007] A manufacturing method according to one embodiment of the present invention is a manufacturing method for the stuffing yarn, comprising the steps of: When the core yarn (A) and the effect yarn (B) are supplied to the fluid intertwining device to be intertwined and integrated, The effect yarn (B) is supplied relatively longer than the core yarn (A), The effect yarn (B) is a non-elastic yarn, The present invention relates to a method for manufacturing a stuffing yarn, in which the non-elastic yarn (A1) and the elastic yarn (A2) of the core yarn (A), or the elastic yarn (A3) having relatively higher elasticity than the elastic yarn (A4) and the elastic yarn (A4) having relatively lower elasticity, are supplied at a fixed length, or the elastic yarn (A2) or the elastic yarn (A3) having relatively higher elasticity is supplied in an elongated state.

[0008] One embodiment of the present invention relates to a padding structure containing the stuffing yarn described above. [Effects of the Invention]

[0009] One embodiment of the present invention provides a stuffing yarn comprising a core yarn (A) and an effect yarn (B), at least a portion of which is intertwined with the core yarn (A), wherein the effect yarn (B) is relatively long and non-stretchable compared to the core yarn (A), and the core yarn (A) is a combination of a non-stretchable yarn (A1) and an elastic yarn (A2), or a combination of an elastic yarn (A3) that is relatively more stretchable than the elastic yarn (A4) and an elastic yarn (A4) that is relatively less stretchable. This allows for stretch between the length of the non-stretchable core yarn (A1) and the length of the elastic yarn (A2), or between the elastic yarn (A4) and the elastic yarn (A3), thereby providing a stuffing yarn with controlled stretchability and a batting structure containing the same. This allows the stuffing yarn to retain its shape when used to fill stuffing, and the batting structure has controlled stretchability, eliminating any tightness and improving comfort. Here, "losing shape" refers to the situation where the fine threads of the stuffing thread become tangled with each other when the stuffing thread is filled into the inside of the lining, or become tangled and form pilling, and do not return to their original state. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a side view of a stuffing thread according to one embodiment of the present invention. [Figure 2]Figure 2A is a schematic side view of an intertwined yarn in one embodiment of the present invention when the elastic yarn is relaxed, Figure 2B is a schematic side view when it is stretched, and Figure 2C is a schematic cross-sectional view of line II in Figure 2A. [Figure 3] FIG. 3 is a schematic explanatory diagram of a method for producing stuffing yarn (air-entangled yarn) according to one embodiment of the present invention. [Figure 4] FIG. 4 is a schematic explanatory view of a method for producing stuffing yarn (air-entangled yarn) according to another embodiment of the present invention. [Figure 5] FIG. 5 is a hysteresis curve showing the power and stretch rate of the yarn used in the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] The stuffing yarn of the present invention is a stuffing yarn containing a core yarn (A) and an effect yarn (B). Both the core yarn (A) and the effect yarn (B) are long fibers. Fibers other than long fiber A and long fiber B may be added as desired, but the total content of long fiber A and long fiber B, when taken as 100% by mass of the stuffing yarn, is preferably 70% by mass or more, and more preferably 80% by mass or more. Long fiber A and long fiber B are intertwined and integrated. Here, "intertwined and integrated" refers to a state in which fibers are entangled or wound around each other. Long fiber A is relatively short compared to long fiber B. Bulkiness is achieved by providing a difference in length between long fiber A and long fiber B.

[0012] In the present invention, the effect yarn (B) is a non-stretchable yarn, and the core yarn (A) is a combination of a non-stretchable yarn (A1) and a stretchable yarn (A2), or a combination of a stretchable yarn (A3) that is relatively more stretchable than the stretchable yarn (A4) and a stretchable yarn (A4) that is relatively less stretchable. The stretchable yarn is preferably a stretchable yarn with a stretch rate of 5% or more, more preferably a stretchable yarn with a stretch rate of 10% or more. The non-stretchable yarn of the effect yarn (B) and the non-stretchable yarn of the non-stretchable yarn (A1) of the core yarn (A) are ordinary polyester drawn yarns, etc., and are also referred to as rigid fiber yarns in this specification.

[0013] In the stuffing yarn of the present invention, when left at rest, the elastic yarn (A2) or the relatively highly elastic elastic yarn (A3) is contracted and in a relaxed state. It is preferable that the stuffing yarn stretches from the relaxed length (L1) to the length (L2) to which the non-elastic core yarn (A1) or the relatively less elastic elastic yarn (A4) is stretched, and that the stuffing yarn can be repeatedly stretched and contracted between L1 and L2. This allows the stretchability to be controlled within a limited range, preventing the fabric from losing its shape. If the core yarn were to stretch without limit, the intertwining between the core yarn and the effect yarn would be undone, resulting in the problem of losing its shape.

[0014] The relationship between the relaxed length (L1) and stretched length (L2) of the stuffing yarn is preferably in the range of L1 × (1 to 3 times) ≦ L2. More preferably, it is in the range of L1 × (1.05 to 2.9 times) ≦ L2, and even more preferably, it is in the range of L1 × (1.1 to 2.8 times) ≦ L2. Within the above range, stretchability can be better controlled and deformation can be prevented. In other words, the core yarn and the effect yarn can be used for a long period of time between the relaxed length (L1) and the stretched length (L2) while maintaining their intertwined integration.

[0015] The elastic yarn (A2) and / or the relatively highly elastic elastic yarn (A3) can be polyurethane elastic yarn, conjugate multifilament yarn, false twist multifilament yarn, etc. As shown in Figure 5, all of these have a stretch rate of 5% or more, more preferably a stretch rate of 10% or more. Note that rigid fiber yarns such as ordinary polyester drawn yarns have a stretch rate of zero.

[0016] The stretchable yarn (A2) and the relatively highly stretchable stretchable yarn (A3) are stretchable elastic yarns, and the stretchable elastic yarns may be arranged as plated yarns. That is, by using at least two types of yarn for the core yarn (A), the roles of intertwining and integrating with the effect yarn (B) are played by the inelastic yarn (A1) and the relatively less stretchable stretchable yarn (A4). Therefore, the stretchable yarn (A2), which does not need to function in intertwining and integrating, and the relatively highly stretchable stretchable yarn (A3) may be arranged as plated yarns that do not function in intertwining and integrating.

[0017] In the method for producing stuffing yarn of the present invention, when the core yarn (A) and the effect yarn (B) are supplied to a fluid entangling device for entangling and integration treatment, the effect yarn (B) is supplied relatively long compared to the core yarn (A), the effect yarn (B) is a non-elastic yarn, and the non-elastic yarn (A1) and the elastic yarn (A2) of the core yarn (A), or the elastic yarn (A3) having relatively higher elasticity than the elastic yarn (A4) and the elastic yarn (A4) having relatively lower elasticity are supplied at a fixed length, or the elastic yarn (A2) or the elastic yarn (A3) having relatively higher elasticity is supplied in an elongated state. When the elastic yarn (A2) or the relatively highly elastic elastic yarn (A3) is stretched and supplied, the elastic yarn (A2) or the relatively highly elastic elastic yarn (A3) exists at a shorter length than the length of the obtained stuffing yarn, and the inelastic yarn (A1) or the relatively less elastic elastic yarn (A4) relaxes by that amount when left at rest, resulting in the structure of the stuffing yarn of the present invention. This allows the stuffing yarn of the present invention to be produced efficiently.

[0018] A stretchable yarn is used as one component of the yarn of the present invention. A latent crimp stretch yarn is preferably used as the stretch yarn. The use of latent crimp stretch yarn provides moderate stretch, good dimensional stability, and minimal change in the shape of the batting, even when left at rest or stretched during exercise. As a result, problems such as the batting shrinking when left at rest and the padded garment becoming rolled up are unlikely to occur. Here, latent crimp stretch yarn is a conjugate yarn obtained by conjugation spinning of at least two polymers with different shrinkage rates. It exhibits crimp (crimp) from the raw yarn stage, but develops even greater crimp (crimp) upon application of heat, and generally has high elongation recovery and stretchability. The maximum power exhibiting elongation recovery is preferably 2 cN / decitex or more, and the maximum stretch ratio exhibiting stretchability is preferably greater than 100%. In the present invention, a silicone resin is subsequently added, and a large crimp (crimp) is exhibited during heat curing. Examples of such latent crimp stretch yarns include polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polyethylene terephthalate (PET), etc., as well as composite yarns thereof. Among these, latent crimp stretch yarns made from two-component polyesters, polyethylene terephthalate and polytrimethylene terephthalate, are preferred due to their entanglement with the continuous fiber B and moderate crimpability. The maximum power indicating stretch recovery of a conjugate yarn of polyethylene terephthalate (PET) and polytrimethylene terephthalate (PTT) is approximately 2.5 cN / decitex, and the maximum stretch percentage indicating stretchability is approximately 110%. Figure 5 shows the stretch recovery graphs of a latent crimp stretch yarn (PET / PTT conjugate yarn) and a comparative yarn after hot water treatment.

[0019] Polyurethane elastic yarn can be used as the stretchable yarn of the present invention. The polyurethane elastic yarn preferably has a single fiber fineness of 1 to 30 decitex and a total fineness of 11 to 300 decitex. Commercially available polyurethane elastic yarns can be used.

[0020] As the non-stretchable yarn, solid yarn (normal yarn) such as polyester, nylon, or polypropylene can be used, but polyethylene terephthalate (PET) hollow yarn is preferable. Polyethylene terephthalate hollow yarn is warm due to its insulating effect, and PET is stiff and can maintain high bulkiness. A hollow ratio of about 10 to 40% is preferable.

[0021] The mass per unit length of the stuffing yarn is preferably 0.01 to 3 g / m, more preferably 0.02 to 1.5 g / m, as this range makes it easy to handle when processing the stuffing.

[0022] The weight ratio of the effect yarn (long fiber B) to the core yarn (long fiber A), when the effect yarn (long fiber B) and the core yarn (long fiber A) are used as the parameters, is preferably 51 to 99% by mass (wt%) of the effect yarn (long fiber B). It is more preferably in the range of 80 to 98 wt%, and particularly preferably in the range of 85 to 97 wt%. Within this range, the core yarn (long fiber A) provides a firm fixing and integration, and the texture is also good.

[0023] The core yarn (long fiber A) and the effect yarn (long fiber B) are preferably integrated by at least one process selected from the group consisting of entanglement, air jet processing, wrapping, and a process in which long fiber B is sprayed onto long fiber A. The entanglement process is a process using an air entanglement machine that sprays compressed air perpendicular to the running direction of long fiber A and long fiber B. The air jet processing is a so-called Taslan process in which compressed air is forced onto long fiber A and long fiber B in the direction of their travel. The wrapping process is a process in which long fiber B is wound onto long fiber A to integrate them. The process in which long fiber B is sprayed onto long fiber A is a process in which long fiber B is sprayed onto long fiber A to entangle or swirl it.

[0024] The stuffing thread of the present invention is preferably coated with a silicone resin and heat-set by curing. The amount of silicone resin attached is preferably in the range of 0.1 to 10% by mass based on the stuffing thread. Furthermore, acrylic resin, urethane resin, epoxy resin, etc. may be added to adjust the hardness.

[0025] The stuffing material of the present invention is fabric containing the above-mentioned stuffing yarn. The stuffing material is preferably a futon, blanket, sleeping bag, pillow, cushion, mat, stuffed toy, lap blanket, jacket, shirt, pants, skirt, vest, coat, cold weather clothing, innerwear, workwear, neck warmer, etc. Jackets, shirts, pants, skirts, etc. are suitable for wear that requires a lot of movement. They also have a comfortable fit like an inner jacket and good stretchability.

[0026] The single fiber fineness of long fiber A and long fiber B is preferably 0.1 to 300 decitex, and the total fineness is preferably in the range of 10 to 600 decitex. More preferably, the single fiber fineness is 1.0 to 50 decitex, and the total fineness is 20 to 250 decitex. If the fineness is in the above range, the fibers are less likely to become worn out and have a good feel.

[0027] The filler thread of the present invention may be stored in a carton container as is, or several strands may be bundled together and wrapped in a cylindrical film along their length. This type of packaging is convenient not only for packaging and transportation, but also for filling the filler thread into the inside of the filler fabric during production. That is, the filler thread can be placed inside the inside of the filler fabric simply by exposing the filler thread from the end of the film in the cylindrical body, positioning and holding this exposed portion at the end of the filler fabric, and then removing the film.

[0028] The stuffing material of the present invention is preferably filled with long fiber stuffing yarns aligned along the length of the stuffing and secured to the outer fabric by multiple quilting threads sewn across the width of the stuffing. This prevents the length of the stuffing yarns from changing between the securing points, and the long fibers A and B are integrated, limiting the movement of the batting even after repeated washing, resulting in a stuffed product with less shifting and greater bulk. The stuffing material of the present invention may also use other long fiber stuffing materials in addition to the long fiber stuffing yarns, or may be a mixture of other long fiber stuffing materials and the long fiber stuffing yarns of the present invention secured to the outer fabric by multiple quilting threads. It may also be used in combination with other feathers, artificial feathers, and staple cotton.

[0029] The outer fabric into which the filling material is inserted may be either non-stretchable or stretchable. The use of stretchable fabric is extremely useful for sports jackets and pants, as it provides stretchability and does not restrict the wearer's full range of motion. In the case of feathers (down), using stretchable fabric for the outer fabric has previously prevented the use of stretchable fabric due to the problem of down blowing out, but the present invention allows for the use of stretchable fabric. As stretchable fabrics, one-way, two-way, and fabrics with partially stretchable sections can be used. Additionally, fabrics using stretchable yarns, i.e., polyurethane-based fibers, and polyester-based fibers such as bicomponent conjugate yarns of polyethylene terephthalate and polytrimethylene terephthalate, can also be used. Furthermore, mechanical stretch fabrics, which do not stretch themselves but have stretchability due to the fabric structure, can also be used.

[0030] The following description will be given with reference to the drawings. In each drawing, the same reference numerals indicate the same parts. In the following description, the filament filler yarn will be described as an example of an interlaced yarn. Fig. 1 is a side photograph of a stuffing yarn in one embodiment of the present invention, Fig. 2A is a schematic side view of an intertwined stretchable yarn in one embodiment of the present invention when relaxed, Fig. 2B is a schematic side view when stretched, and Fig. 2C is a schematic cross-sectional view along line II in Fig. 2A. This stuffing yarn 1 is composed of core yarns 2 and 3 and effect yarn 4. As shown in Fig. 2A, in the relaxed state, there are parts where the core yarn 2 and the core yarn 3 are separated, but the core yarn 3 and the effect yarn 4 remain intertwined and integrated overall. Next, as shown in Fig. 2B, in the stretched state, the core yarn 2 stretches, but because the core yarns 2 and 3 are partially intertwined and integrated, and because the core yarn 3 is a rigid fiber yarn, it does not stretch beyond the length at which the core yarn 3 is straightened. Fig. 2C shows a state in which the core yarns 2 and 3 are separated, and also shows the bulkiness of the effect yarn 4. The symbol X in FIG. 2A indicates a portion where the filaments of the stuffing thread are entangled with each other when the stuffing thread is filled into the side fabric, or where the filaments are entangled and prone to pilling.

[0031] 3 is a schematic diagram illustrating a method for producing a stuffing yarn (air-entangled yarn) according to one embodiment of the present invention. The core yarn 2 (elastic yarn) is pulled out from the yarn winding body 5, stretched between two pairs of feed rollers 9 and 10, and passed through a yarn guide 12 before being supplied to an air-entanglement device 13. The core yarn 3 is pulled out from the yarn winding body 6, passed through a pair of feed rollers 8 and a yarn guide 12, and supplied to the air-entanglement device 13. The effect yarn 4 is pulled out from the yarn winding body 7, passed through a pair of feed rollers 11 and a yarn guide 12, and supplied to the air-entanglement device 13. When compressed air 14 is supplied to the air-entanglement device 13, the fibers in the yarn path 15 are opened and rotated, thereby entangled with each other. After the mixed fiber entanglement treatment is performed using an entanglement nozzle with a core yarn supply speed of 10 to 200 m / min, an effect yarn supply speed of 20 to 10,000 m / min, a winding speed of 10 to 200 m / min, and an air pressure of 0.01 to 1.0 MPa, the yarns are passed through a delivery roller 16 and a winder roller 17 and wound onto a yarn wound body 18. This method has the advantage of being able to increase the yarn winding speed to 20 to 1,500 m / min, resulting in high productivity.

[0032] Figure 4 is a schematic explanatory diagram of a method for producing stuffing yarn (air-entangled yarn) in another embodiment of the present invention. The difference from Figure 3 is that core yarn 2 (elastic yarn) is pulled out from yarn winding body 5, core yarn 3 is pulled out from yarn winding body 6, and they are aligned and passed through a pair of feed rollers 10 and yarn guide 12 to be supplied to air-entanglement device 13. In this case, the yarn lengths of core yarn 2 (elastic yarn) and core yarn 3 are the same, or when unwinding tension is applied to core yarn 2 (elastic yarn), core yarn 2 (elastic yarn) is slightly stretched before being supplied to air-entanglement device 13.

[0033] The resulting entangled yarn is then treated with a silicone resin. A reactive silicone treatment agent having a hydrogen group (-OH) or a vinyl group (-CH=CH2) at the molecular end is preferably used. Examples of suitable silicone resins include bulky silicone "TERON E 530" manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd., and soft silicones such as "TERON E 731" and "TERON E 722." The amount of silicone added is preferably 0.1 to 10% by mass of the wadding, based on dry weight. Next, in a heat treatment step, the silicone resin is cured by heat treatment at 140 to 190°C for 1 to 10 minutes. At this time, the latent crimp stretch yarn of the core yarn develops post-crimp.

[0034] Figure 5 is a hysteresis curve showing the power and stretch rate of the yarn used in the present invention. Stretch fiber yarns include polyurethane elastic yarn, conjugate multifilament yarn, and false-twist multifilament yarn, and the characteristics of each yarn are shown. In Figure 5, woolly refers to false-twist textured yarn. PET / PTT conjugate yarn is a side-by-side latent crimp type stretch yarn made from two-component polyesters, polyethylene terephthalate and polytrimethylene terephthalate. The stretch rate of ordinary polyethylene terephthalate multifilament drawn yarn is zero.

[0035] In one embodiment of the present invention, the effect yarns are all non-elastic yarns, but the core yarns are the following combinations. (1) A combination of ordinary polyethylene terephthalate multifilament oriented yarn (PET oriented yarn, non-elastic yarn) and polyurethane elastic yarn (elastic yarn). (2) A combination of ordinary polyethylene terephthalate multifilament drawn yarn (non-elastic yarn) and PET / PTT conjugate yarn (elastic yarn) (3) A combination of ordinary polyethylene terephthalate multifilament drawn yarn (PET drawn yarn, non-elastic yarn) and wooly nylon or wooly polyester yarn (false-twisted yarn, elastic yarn). (4) A combination of PET / PTT conjugate yarn (relatively low elasticity yarn) and polyurethane elastic yarn (relatively high elasticity yarn). (5) A combination of woolly nylon or woolly polyester yarn (relatively low elasticity yarn) and polyurethane elastic yarn (relatively high elasticity yarn). (6) A combination of woolly nylon or woolly polyester yarn (relatively low elasticity yarn) and PET / PTT conjugate yarn (relatively high elasticity yarn) The above combinations are shown in Table 1. Circles indicate possible combinations.

[0036] [Table 1] [Example]

[0037] The present invention will be described in more detail below with reference to examples, although the present invention is not limited to the following examples. The measurement methods for each physical property will be explained below. <Shape retention> If the filler threads do not tangle with each other when filling the inside of the fabric, the fabric is evaluated as passing; if they tangle and form pilling, and do not return to their original state, the fabric is evaluated as failing in terms of shape loss.

[0038] Example 1 Core yarn 1 was a polyethylene terephthalate (PET) hollow filament yarn (fineness 40 decitex, filament count 15, hollow ratio 35%), and core yarn 2 was a polyurethane filament (manufactured by Toreoperontex Co., Ltd., Lycra, 105 denier (117 decitex), filament count 11). Polyethylene terephthalate (PET) hollow filament yarn (total fineness 40 decitex, filament count 15, hollow ratio 35%) was used as the effect yarn. Using core yarn 1, core yarn 2, and effect yarn, stuffing yarn was produced using the interlacing device shown in Figure 4. The polyurethane filament yarn was aligned with core yarn 1 at a fixed length and fed to the interlacing device. Next, in the silicone resin application process, a silicone resin was applied. The silicone resin used was an aqueous solution containing 10% by mass of Matsumoto Yushi Pharmaceutical's "Teron E-530" and 0.5% by mass of the same company's "Marpoteron E-722" as a crosslinker. The amount applied was 3.0 wt% of the dry weight of the wadding. Next, in the heat treatment process, the silicone resin was thermally cured and fixed by heat treatment at 140-190°C for 1-10 minutes. The resulting stuffing thread had acceptable shape retention.

[0039] (Comparative Example 1) The same procedure as in Example 1 was carried out, except that only polyethylene terephthalate (PET) hollow filament yarn (fineness 40 decitex, number of filaments 15) was used as the core yarn, and no polyurethane filament was used. The resulting stuffing yarn passed the test in terms of shape retention, but had no elasticity (stretchability).

[0040] Example 2 As core yarn 1, a polyethylene terephthalate (PET) hollow filament yarn (fineness 40 decitex, number of filaments 15, hollowness 35%) was used, and as core yarn 2, a PET / PTT conjugate yarn (elastic yarn, maximum power indicating elongation recovery of approximately 2.5 cN / decitex, maximum stretch rate indicating elasticity of approximately 110%, total fineness 33 decitex, number of filaments 24) was used. As the effect yarn, a polyethylene terephthalate (PET) hollow filament yarn (fineness 40 decitex, number of filaments 15, hollowness 35%) was used. Using core yarn 1, core yarn 2, and effect yarns, stuffing yarn was produced using the interlacing device shown in Figure 4. The PET / PTT conjugate yarn was aligned with core yarn 1 at a fixed length and fed to the interlacing device. The resulting stuffing thread had acceptable shape retention.

[0041] Example 3 Core yarn 1 was a PET / PTT conjugate yarn (elastic yarn, maximum elongation recovery power of approximately 2.5 cN / decitex, maximum stretch rate of approximately 110%, total fineness of 33 decitex, number of filaments: 24) and core yarn 2 was a polyurethane filament (manufactured by Toreopelontex Co., Ltd., Lycra, 105 denier (117 decitex), number of filaments: 11). Polyethylene terephthalate (PET) hollow filament yarn (fineness of 40 decitex, number of filaments: 15, hollowness: 35%) was used as the effect yarn. Using core yarn 1, core yarn 2, and effect yarns, stuffing yarn was produced using the interlacing device shown in Figure 4. The polyurethane filament yarn was aligned with core yarn 1 at a fixed length and fed to the interlacing device. The resulting stuffing thread had acceptable shape retention. [Industrial Applicability]

[0042] The stuffing yarn of the present invention is useful for futons, blankets, sleeping bags, pillows, cushions, mats, stuffed toys, lap blankets, jackets, shirts, pants, skirts, vests, coats, cold weather clothing, innerwear, work clothes, neck warmers, etc. Jackets, shirts, pants, and other clothing are suitable for sports. [Explanation of symbols]

[0043] 1 stuffing thread 2 Core thread (elastic thread) 3 Core thread (non-elastic thread) 4. Flower thread (non-elastic thread) 5,6,7,18 Winding body 8,9,10,11 Feed rollers 12 Thread guide 13 Air interlacing device 14 Compressed air 15 Thread path 16 Deliverable Roller 17 Winder roller X Areas prone to tangling or pilling

Claims

1. A stuffing thread comprising a core thread (A) and a filament thread (B), At least a part of the core yarn (A) and the effect yarn (B) are integrated by entanglement, The effect yarn (B) is relatively long compared to the core yarn (A), The effect yarn (B) is a non-elastic yarn, The core yarn (A) is a combination of a non-elastic yarn (A1) and an elastic yarn (A2), or a combination of an elastic yarn (A3) having relatively higher elasticity than the elastic yarn (A4) and an elastic yarn (A4) having relatively lower elasticity.

2. The stuffing yarn according to claim 1, wherein the stuffing yarn is in a relaxed state when left at rest, with the elastic yarn (A2) or the elastic yarn (A3) with relatively high elasticity contracted, and stretches from the relaxed length (L1) to the length (L2) to which the non-elastic yarn (A1) or the elastic yarn (A4) of the core yarn with relatively low elasticity is stretched, and is capable of repeated stretching and contracting between L1 and L2.

3. The stuffing yarn according to claim 2, wherein the relationship between the length (L1) and the length (L2) is L1 x (1 to 3 times) ≦ L2.

4. 2. The stuffing yarn according to claim 1, wherein the elastic yarn (A2) and / or the relatively highly elastic elastic yarn (A3) is at least one selected from the group consisting of elastic yarn, conjugated multifilament yarn, and false-twisted multifilament yarn.

5. 2. The stuffing yarn according to claim 1, wherein the stretchable yarn (A2) and the relatively highly stretchable stretchable yarn (A3) are stretchable elastic yarns, and the stretchable elastic yarns are arranged as plating yarns.

6. 2. The stuffing yarn according to claim 1, wherein the inelastic yarn (A1) and the filament yarn (B) are both polyester multifilament yarns.

7. A method for producing stuffing yarn according to any one of claims 1 to 6, When the core yarn (A) and the effect yarn (B) are supplied to the fluid intertwining device to be intertwined and integrated, The effect yarn (B) is supplied relatively longer than the core yarn (A), The effect yarn (B) is a non-elastic yarn, A method for manufacturing stuffing yarn, characterized in that the non-elastic yarn (A1) and elastic yarn (A2) of the core yarn (A), or the elastic yarn (A3) having relatively higher elasticity than the elastic yarn (A4) and the elastic yarn (A4) having relatively lower elasticity, are supplied at a fixed length, or the elastic yarn (A2) or the elastic yarn (A3) having relatively higher elasticity is supplied in an elongated state.

8. A batting structure comprising a stuffing yarn according to any one of claims 1 to 6.

9. The padding structure according to claim 8, wherein the padding structure is clothing, a futon, bedding, a sleeping bag, or a part thereof.

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