JP7240207B2 - Thread for stuffing and stuffed object using the same - Google Patents

Description

TECHNICAL FIELD The present invention relates to a stuffing yarn composed of long fibers and a stuffing object using the same.

Down products such as duvets and down jackets are generally filled with waterfowl down. Waterfowl include geese, ducks, and eiders of the Arctic coastline. Feathers include down, which is chest hair, and feathers, both of which are used in down products. Feathers are produced in Central Europe such as Poland and Hungary, Northern Europe including the Scandinavian Peninsula, and China. Feathers are very bulky and warm, and occupy a position as a luxury material for down products such as quilts and down jackets.

However, natural feathers depend on waterfowl, and there is a problem that the supply amount is limited, and the supply amount fluctuates due to the influence of natural conditions and epidemics (eg, bird viruses). Alternatively, there is a limit to capturing wild birds from the viewpoint of nature conservation. In addition, natural feathers can cause bad odors if they are washed insufficiently. It is necessary to manage to keep In addition, there is a basic problem that feather products such as duvets and down jackets are not easy to wash.

Therefore, there have been many proposals for cotton wadding. Patent Literature 1 proposes shrinking polyester fibers by heat treatment to develop crimps and impart bulkiness and elasticity. The present applicant has proposed wadding in which core yarn and flower yarn are entangled in Patent Documents 2 and 3. Patent Document 4 proposes a wadding in which filament threads are wound around a core thread and entangled. Furthermore, Japanese Patent Application Laid-Open No. 2002-200000 proposes to swirl yarns having different yarn lengths by means of an air jet so as to process them to be bulky.

JP-A-6-93513 JP 2012-067429 A JP 2012-067430 A JP 2016-027213 A JP 2017-122304 A

However, the stuffed article of the prior art has a problem in stretchability, and there is a problem in applying it to wear with large movements. Furthermore, in the case of feathers, there is also the problem that down blows out when elastic fabric is used for the side fabric.
In order to solve the above problems, the present invention provides a stuffing yarn that is stretchable, can be applied to wear that moves a lot, and can be filled in stretchable fabric, and a stuffed object using the same.

The stuffing yarn of the present invention is a stuffing yarn composed of at least two types of long fibers A and long fibers B, wherein the long fibers A are relatively shorter than the long fibers B, and the long fibers A and the filament B are integrated, and the filament A is a stretchable yarn having stretchability made of a bicomponent conjugate yarn of polyethylene terephthalate and polytrimethylene terephthalate .

The stuffed article of the present invention is characterized in that the stuffing yarn is filled in the side fabric.

In the present invention, since the filament A is relatively shorter than the filament B and the filament A is a stretchable yarn, the stuffing yarn has elasticity and is suitable for wear with large movements. It is possible to provide a stuffing yarn and a stuffed object using the same. Further, since the long fibers A and B are integrated, the long fibers A and the long fibers B will not separate even if the garment is applied to a wear with a large movement. In addition, even if the stretchable material is filled with the stuffing, the stuffing does not blow out from the side material, and the stuffing is less uneven.

FIG. 1 is a side view of entangled threads in one embodiment of the present invention. FIG. 2 is a schematic illustration of a method for producing a long-fiber air-entangled yarn in one embodiment of the present invention. FIG. 3 is an elongation recovery graph after hot water treatment of the latent crimp type stretch yarn (PET/PTT conjugate yarn) used in the present invention and the comparative yarn.

The stuffing yarn of the present invention is composed of at least two types of long fibers A and long fibers B. It is optional to add fibers other than the long fibers A and B, but the total amount of the long fibers A and B is preferably 70% by mass or more, more preferably 80% by mass, when the stuffing yarn is 100% by mass. % or more. The long fibers A and the long fibers B are integrated. Here, integration means a state in which fibers are entangled or wound around each other. The long fibers A are relatively shorter than the long fibers B. By providing a difference in length between the long fibers A and the long fibers B, bulkiness is obtained.

In the present invention, yarn having stretchability is used as the filament A. A latent crimp type stretch yarn is preferably used as the stretch yarn. When the latent crimp type stretch yarn is used, there is a moderate stretch, good dimensional stability, and the shape of the wadding is less deformed in a stationary state or in an elongated state during exercise. As a result, problems such as the stuffing shrinking in a standing state and the stuffing clothing curling up are less likely to occur. Here, the latent crimp type stretch yarn is a conjugate yarn obtained by composite-spinning at least two types of polymers having different shrinkage rates. Joining develops a larger crimp. It generally has high elongation recovery and elasticity. It is preferable that the maximum power indicating elongation recovery is 2 cN/decitex or more and the maximum stretch rate indicating stretchability exceeds 100%. In the present invention, a silicone resin is applied later and a large crimp develops during heat curing. Such latent crimp type stretch yarns include, for example, polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polyethylene terephthalate (PET) and composite yarns thereof. Among these, a latent crimp type stretch yarn using a two-component polyester of polyethylene terephthalate and polytrimethylene terephthalate is preferable because of its entangling property with the long fibers B and appropriate crimping property. A conjugate yarn of polyethylene terephthalate (PET) and polytrimethylene terephthalate (PTT) has a maximum power indicating elongation recovery of about 2.5 cN/decitex and a maximum stretch ratio indicating elasticity of about 110%. FIG. 3 shows the elongation recovery graph after hot water treatment of the latent crimp type stretch yarn (PET/PTT conjugate yarn) and the comparative yarn.

As the long fibers B, solid fibers (ordinary fibers) such as polyester, nylon, and polypropylene can be used, but polyethylene terephthalate (PET) hollow fibers are preferred. Polyethylene terephthalate hollow fibers are warm due to their heat insulating effect, and PET has a firmness and can maintain high bulkiness. The hollowness is preferably about 10 to 40%.

The weight per unit length of the stuffing thread is preferably 0.01 to 3 g/m, more preferably 0.02 to 1.5 g/m. Within this range, it is convenient to handle when stuffed.

The weight ratio of the filament yarn (long fiber B) and the core yarn (long fiber A) is the weight ratio of the filament yarn (long fiber B) when the flower yarn (long fiber B) and the core yarn (long fiber A) are used as parameters. The ratio is preferably in the range of 51 to 99% by mass (wt%). It is more preferably in the range of 80-98 wt%, particularly preferably in the range of 85-97 wt%. Within the above range, the fixing and integration by the core yarn (long fiber A) is firm and the texture is good.

The long fibers A and the long fibers B are preferably integrated by at least one process selected from entangling, air jetting, winding, and jetting the long fibers B onto the long fibers A. The entangling process is a process using an air entangling machine that injects compressed air in a direction perpendicular to the direction in which the long fibers A and B run. Air jet processing is so-called taslan processing, and is processing in which compressed air is forced into the long fibers A and B in the advancing direction. The winding process is a process of winding the long fibers B around the long fibers A to integrate them. The process of jetting the long fibers B onto the long fibers A is a process of jetting the long fibers B onto the long fibers A and entangling or turning them.

It is preferable that the stuffing thread is applied with a silicone resin and heat-set by curing. A preferred adhesion amount of the silicone resin is in the range of 0.1 to 10% by mass with respect to the stuffing yarn. Further, an acrylic resin, a urethane resin, an epoxy resin, or the like may be fixed to adjust the hardness.

In the stuffed article of the present invention, the stuffing yarn is filled in the side fabric. Stuffing objects are preferably futons, blankets, sleeping bags, pillows, cushions, mats, plush toys, throws, jackets, shirts, pants, skirts, vests, coats, winter clothes, innerwear, work clothes, neck warmers, and the like. Clothing such as jackets, shirts, pants, and skirts are suitable for wear that moves a lot. In addition, it has a fit like an inner jacket and stretches well.

The single fiber fineness of the long fibers A and long fibers B is preferably in the range of 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 ranges from 1.0 to 50 decitex, and the total fineness ranges from 20 to 250 decitex. When the fineness is within the above range, the fabric is less likely to be flattened and has a good texture.

The stuffing yarn of the present invention may be stored in a carton container as it is, or a plurality of yarns may be bundled and a film may be cylindrically wrapped around the bundle in the longitudinal direction. The use of such a wrapper is not only convenient for packaging and transportation, but also convenient for filling the filling thread into the side fabric during manufacture of the filling. That is, the stuffing thread can be stored in the side material by simply exposing the stuffing thread from the end of the film of the cylindrical body, arranging the exposed portion at the end of the side material to hold it down, and pulling out the film.

The stuffed article of the present invention is preferably filled with long-fiber stuffing yarns arranged in the lengthwise direction of the stuffing and fixed to the side fabric by a plurality of quilt yarns sewn in the widthwise direction of the stuffing. As a result, the length of the stuffing yarn does not change between the fixed points, and since the long fibers A and B are integrated, the movement of the stuffing is restricted even after repeated washings, and the shifting is small. , resulting in a bulky stuffing product. The stuffed object of the present invention may use other long-fiber stuffing together with the long-fiber stuffing yarn, or may mix the other long-fiber stuffing and the long-fiber stuffing yarn of the present invention to produce a plurality of quilt yarns. It may be fixed to the side ground by It may also be used in combination with other feathers, artificial feathers, or short fiber cotton.

The side cloth for filling the stuffing object may be a non-stretchable cloth or a stretchable cloth. The use of elastic fabrics is extremely useful for sports jackets and sports pants because they are elastic and do not interfere with the wearer's large movements. In the case of feathers (down), if an elastic fabric is used for the side fabric, it has been impossible to use an elastic fabric because of the problem of the down blowing out, but in the present invention, an elastic fabric can be used. As the elastic fabric, one-way, two-way, and partially elastic fabrics can be used. It is also possible to use elastic yarns, that is, fabrics using polyester fibers such as polyurethane or bicomponent conjugate yarns of polyethylene terephthalate and polytrimethylene terephthalate. Further, a mechanically stretched fabric or the like can be used, which does not stretch itself, but has elasticity due to the texture of the fabric.

Description will be made below with reference to the drawings. In each drawing, the same reference numerals denote the same parts. Further, in the following description, a case where the filament stuffing yarn is an entangled yarn will be described as an example. FIG. 1 is a side view of a long fiber entangled yarn in one embodiment of the present invention. In this long fiber entangled yarn 1, constituent fibers of a core yarn 2 (long fiber A) and a filament yarn 3 (long fiber B) are entangled with each other, and the filament yarn 3 is opened to partially form a loop-shaped fiber. are doing.

FIG. 2 is a schematic explanatory view showing a method for producing an air-entangled yarn. A core yarn 4a (long fiber A) is pulled out from the wound body 4, a filament yarn 5a (long fiber B) is pulled out from the wound body 5, and passed through two feed rollers 6 and 7 and a yarn guide 8 to be air-entangled. 10. When the compressed air 11 is supplied to the air entangling device 10, the fibers in the yarn path 9 are opened or swirled to entangle each other. 12 is a mixed fiber entangled yarn. The core yarn supply speed is 10 to 200 m/min, the flower yarn supply speed is 20 to 10,000 m/min, the winding speed is 10 to 200 m/min, and the air pressure is 0.01 to 1.0 MPa. After passing through the delivery roller 13 and the winder roller 14, the yarn is wound around the wound yarn body 20. - 特許庁This method is advantageous in that the yarn winding speed can be increased to 20 to 1500 m/min and productivity is high.

A silicone resin is applied to the obtained entangled threads. As the silicone resin, it is preferable to use a reactive silicone treatment agent having a hydrogen group (--OH), a vinyl group (--CH=CH ₂ ) or the like at the molecular end. For example, soft silicon such as "TERON E 530" bulky silicon, "TERON E 731" and "TERON E 722" manufactured by Matsumoto Yushi Seiyaku Co., Ltd. can be used. The amount to be applied is preferably 0.1 to 10% by mass based on the dry weight of the cotton padding. Next, in the heat treatment step, heat treatment is performed at 140 to 190° C. for 1 to 10 minutes to cure the silicone resin. At this time, the latent crimp type stretch yarn of the core yarn is post-crimped.

EXAMPLES The present invention will be described in more detail with reference to the following examples. It should be noted that the present invention is not limited to the following examples.
A method for measuring each physical property will be described.
<Method for measuring bulkiness>
One of the quality criteria for feathers is bulkiness. For the feathers, the bulkiness of the batting material (stuffing yarn) was measured by a method conforming to the JIS Feather Test Method (JIS L 1903-1998 Test Method for Feathers for Filling Materials Used in Feather Products). 30 g of batting material is placed in a cylindrical container with an inner diameter of 29 cm and a height of 50 cm, and the height of the batting material is measured after placing a 120 g loading disk (weight) on it for 2 minutes. Measure three points on the weight to the nearest 1 mm. This value is larger as the batting material is elastic and of good quality. At this time, 10 or more batting materials (stuffing threads) are bundled and cut into lengths of 50 cm, and 30 g is sampled. 30 g was put into the container, and if it did not fit into the measuring device, the filling material (stuffing thread) that overflowed was lightly pressed by hand so that it did not overflow.
<Stretching and elongation rate>
Measured according to JIS L 1013 B method <stretching elastic modulus>
Measured according to JIS L 1013 B method.

(Example 1)
As a core yarn, a bicomponent conjugate yarn of polyethylene terephthalate and polytrimethylene terephthalate, fineness 33 decitex, and filament number of 24 is used, and as flower yarn, polyethylene terephthalate (PET) hollow filament yarn (hollow ratio 35%), fineness 39 decitex. , and 12 filaments were used to produce a stuffing yarn under the conditions shown in Table 1. Table 2 summarizes the physical properties of the resulting stuffing thread. Hereinafter, latent crimp type stretch yarn is indicated as PTT/PET, 33T/24F, and polyethylene terephthalate (PET) hollow filament yarn, fineness 39 decitex, 12 filaments is also indicated as PET hollow fiber 39T/12F. be.
Next, in the step of applying a silicone resin, a silicone resin was applied. As the silicone resin, an aqueous solution containing 10% by mass of "Teron E-530" manufactured by Matsumoto Yushi Seiyaku Co., Ltd. and 0.5% by mass of "Marpoteron E-722" manufactured by the same company as a cross-linking agent is used, and the amount applied is dry. 3.0% by weight of the wadding was applied by weight. Next, in the heat treatment step, heat treatment was performed at 140 to 190° C. for 1 to 10 minutes to heat cure and fix the silicone resin.

(Example 2)
The same procedure as in Example 1 was repeated except that a bicomponent conjugate yarn of polyethylene terephthalate and polytrimethylene terephthalate, a fineness of 56 decitex, and 24 filaments was used as the core yarn. Table 2 summarizes the physical properties of the resulting stuffing thread.

(Comparative example 1)
The same procedure as in Example 1 was repeated except that a polyethylene terephthalate filament yarn with a fineness of 33 decitex and 18 filaments was used as the core yarn.
Table 1 summarizes the above conditions and results.

As is clear from Table 1, in Examples 1 and 2, compared with Comparative Example 1, a slight decrease in bulkiness was observed. It is thought that this is because the mass is large due to the expansion and contraction, and the weight becomes heavy. The stretching elongation rate and stretching elastic modulus were significantly improved in Examples 1 and 2 as compared to Comparative Example 1, and a highly stretchable filling material was obtained.

The stuffing yarn of the present invention is useful for futons, blankets, sleeping bags, pillows, cushions, mats, stuffed toys, throws, jackets, shirts, pants, skirts, vests, coats, winter clothing, innerwear, work clothes, neck warmers, and the like. is. Garments such as jackets, shirts and pants are suitable for sports.

1 long fiber entangled yarn 2, 4a core yarn (latent crimp type stretch yarn)
3, 5a Flower yarns 4, 5, 20 Winding yarn body 6, 7 Feed roller 8 Yarn guide 9 Yarn path of interlacing machine 10 Air interlacing device 11 Pressure air 12 Mixed fiber interlacing yarn 13 Delivery roller 14 Winder roller

Claims (9)

A stuffing yarn composed of at least two types of long fibers A and long fibers B,
The long fibers A are relatively shorter than the long fibers B,
The long fibers A and the long fibers B are integrated,
A stuffing yarn , wherein the filament A is a stretchable elastic yarn comprising a bicomponent conjugate yarn of polyethylene terephthalate and polytrimethylene terephthalate . The stuffing yarn according to claim 1, wherein the filament A is a latent crimp type stretch yarn. The stuffing yarn according to claim 1 or 2, wherein the long fibers B are polyester hollow fibers. The stuffing yarn according to any one of claims 1 to 3, wherein the weight per unit length of the stuffing yarn is in the range of 0.01 to 3 g/m. The weight ratio of the long fibers B and the long fibers A is 80 to 99% by mass when the long fibers B and the long fibers A are used as a parameter. Stuffing thread according to any one of the preceding claims. The long fibers A and the long fibers B are integrated by at least one process selected from entangling, air jetting, winding, and jetting the long fibers B onto the long fibers A. Item 6. The stuffing thread according to any one of Items 1 to 5. The stuffing yarn according to any one of claims 1 to 6, wherein the stuffing yarn is provided with a resin and fixed by curing. A stuffed article, characterized in that the stuffing yarn according to any one of claims 1 to 7 is filled in a side fabric. A stuffed object according to claim 8, wherein said side fabric is a stretch fabric.

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