JP7303645B2 - Thread for stuffing, method for producing the same, and stuffed object using the same - Google Patents

Description

TECHNICAL FIELD The present invention relates to a stuffing yarn composed of long fibers , a method for producing the same , and a stuffed article 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 bulky and warm, and occupy the position of high-class materials as 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 Document 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 Laid-Open No. 2002-100003 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, although the stuffed articles of the prior art are excellent in bulkiness, further improvement in bulkiness is required in the market.
The present invention provides a stuffing yarn that is bulky and has high heat retention in order to satisfy the above requirements, a method for producing the same , 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 (core yarn) and long fibers B (flower yarn) ,
The long fibers A (core yarn) are relatively shorter than the long fibers B (filament yarn) ,
The long fibers A (core yarn) and the long fibers B (flower yarn) are intertwined and integrated,
The long fiber A (core yarn) is a polyester mixed yarn with different shrinkage,
The long fibers B (flower threads) are polyester hollow fibers having a single fiber fineness of 3 decitex or more and a hollow ratio of more than 30%,
At least a urethane-based cross-linking agent, an acrylic-based cross-linking agent, or an epoxy-based cross-linking agent is applied to the stuffing thread as a cross-linking agent and fixed by curing,
The stuffing yarn is characterized in that it has a bulkiness of 140 mm or more according to a measurement method conforming to JIS L 1903-1998 "Testing methods for feathers used as filling material for feather products".

The method for producing a stuffing yarn of the present invention is the above-described method for producing a stuffing yarn, wherein the long fibers A (core yarn) and the long fibers B (flower yarn) are subjected to entangling processing, air jet processing, and long fiber It is characterized by being integrated by at least one process selected from the process of jetting the long fibers B (flower threads) to A (core threads).
The stuffed article of the present invention is characterized in that the stuffing yarn is filled in the side fabric.

In the present invention, the long fiber A is relatively shorter than the long fiber B, the long fiber A and the long fiber B are integrated, and at least a urethane-based cross-linking agent and an acrylic To provide a stuffing yarn which is bulky, resistant to settling, and has high heat retention by applying a crosslinking agent or a resin-based crosslinking agent such as an epoxy-based crosslinking agent and fixing it by curing, and a stuffed object using the yarn. can. In addition, the wadding is resistant to washing, the long fibers A and the long fibers B do not separate even after washing, and since the wadding is made of long fibers, the wadding 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 a cross-sectional photograph of a polyester mixed yarn with different shrinkage of long fiber A (core yarn) used in one example of the present invention. FIG. 4 is a cross-sectional photograph of a polyester hollow fiber of long fiber B (flower filament) used in one example of the present invention.

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. Bulkiness is obtained by providing a length difference between the long fibers A and the long fibers B.

In the present invention, it is preferable to use a polyester hollow fiber having a single fiber fineness of 3 decitex or more as the continuous fiber B. This increases bulkiness and heat retention. If the single fiber fineness is less than 3 decitex, bulkiness and heat retention cannot be expected. Note that decitex is also displayed as T.

At least a urethane cross-linking agent, an acrylic cross-linking agent or an epoxy resin cross-linking agent is applied to the stuffing thread as a cross-linking agent and fixed by curing. By using the cross-linking agent, bulkiness and resistance to washing can be improved. Further, it is preferable to use a resin agent that improves smoothness, such as a silicone resin, as a surface treatment agent. In particular, it is preferable to use a silicone-based resin agent and a urethane-based cross-linking agent in combination.

It is preferable that the stuffing yarn has a bulkiness of 140 mm or more according to a measurement method conforming to JIS L 1903-1998 "Testing methods for feathers used as filling material for feather products".

The filament A is preferably polyester mixed yarn with different shrinkage. A different shrinkage mixed yarn is a yarn in which a plurality of types of filament fibers having different heat shrinkage differences are mixed together so that the heat shrinkage difference is 6%, preferably 8% or more. As such a polyester mixed yarn with different shrinkage, there is a trade name "Shirumi" manufactured by Unitika Fiber Co., Ltd. This polyester mixed yarn with different shrinkage is obtained by mixing two types of polyethylene terephthalate filament fibers having a triangular cross section, and has a heat shrinkage difference of 8%.

The long fibers B preferably have a single fiber fineness of 3 decitex or more and a hollowness of more than 30%. This allows for high bulkiness and heat retention.

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 fiber B is preferably 1.1 to 100 times longer than the long fiber A, more preferably 2 to 100 times longer, still more preferably 4 to 60 times longer. Within this range, the length of the filament B becomes a loop fiber corresponding to the length thereof, and the bulkiness can be increased.

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.

The stuffing yarn of the present invention is at least one selected from futons, blankets, sleeping bags, pillows, cushions, mats, stuffed animals, throws, jackets, shirts, pants, skirts, vests, coats, winter clothing, inner clothing and neck warmers. Filled in a stuffing object.

The stuffed object is machine washable. Since it is washable, the bedding is suitable for hotels, rentals, disasters, hospitals, nursing homes, etc., and the clothing is suitable for sports.

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.

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 stuffing yarn according to one embodiment of the present invention. In this filament stuffing yarn 1, constituent fibers of core yarn 2 (long fiber A) and filament yarn 3 (filament B) are entangled with each other, and filament yarn 3 (filament yarn B) is opened and partially A loop-shaped fiber is formed in the

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-based resin and a resin cross-linking agent are applied to the obtained entangled threads and fixed by curing. 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 silicone resins such as "Teron E-530" bulky silicone and "Teron E-731" manufactured by Matsumoto Yushi Seiyaku Co., Ltd. can be used. As the resin cross-linking agent, at least one cross-linking agent selected from a urethane-based cross-linking agent such as a resin manufactured by Nicca Chemical Co., Ltd., an acrylic cross-linking agent such as a resin manufactured by DIC Corporation, and an epoxy-based cross-linking agent such as a resin manufactured by DIC Corporation. It is preferable to use together. Among these, the combined use of a silicone resin and a urethane cross-linking agent is preferred. The ratio of the cross-linking agent to 100 parts by weight of the silicone resin is preferably 1 to 100 parts by weight. The total amount of the silicone resin and cross-linking agent to be applied is preferably 0.1 to 10% by weight based on the dry weight of the batting. Next, in the heat treatment step, heat treatment is performed at 140 to 190° C. for 1 to 20 minutes to cure and fix the silicone resin.

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>
The bulkiness was measured for the batting material (stuffing yarn) 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.
<Washing evaluation>
The obtained long-fiber wadding was aligned in one direction, and 40 g of the long-fiber wadding sheet was filled into a side fabric of 30 cm in length and 30 cm in width to obtain a stuffed object. Using a household washing machine, 30 g of a commercially available detergent (“Attack” manufactured by Kao Corporation) was added, washed with water, rinsed twice, and then dried. After repeating this washing process five times, the height was measured by the method described in JP-A-2012-067429, and the reduction rate of the height of the stuffed object after washing was calculated. A was given when the rate of decrease was within 10%.
<Smoothness evaluation>
In the manufacturing process of long fiber wadding, when winding up wadding from the exit of the dryer, check whether the wadding is attached to the conveyor and whether the wadding is attached to each other. , and B, if the adherence causes a decrease in productivity.

(Example 1)
As the core yarn, trade name "Sirumi" manufactured by Unitika Fiber Co., Ltd., fineness: 33 decitex, number of filaments: 18 (33T/18F) was used. This polyester mixed yarn with different shrinkage is obtained by mixing two types of polyethylene terephthalate filament fibers having a triangular cross section, and has a heat shrinkage difference of 8%. A cross-sectional photograph is shown in FIG. As the filament, the hollow fiber shown in FIG. 4, fineness: 39 decitex, number of filaments: 12 (39T/12F, single fiber fineness: 3.25T/F) was used. The hollowness rate was 35%. A stuffing yarn was produced under the conditions shown in Table 2 using the air entangling device shown in FIG.
Next, in the surface treatment step, a urethane-based cross-linking agent was applied. As the urethane-based cross-linking agent, an aqueous solution of 5% by weight of a resin manufactured by Nicca Chemical Co., Ltd. was used, and the amount applied was 1.5 to 3.5% by weight in terms of dry weight of the batting. Next, in the heat treatment step, heat treatment was performed under the conditions shown in Table 3, and the urethane-based cross-linking agent was fixed by thermal curing. The results for the stuffing yarn obtained are shown in Table 4.

(Example 2)
Using the stuffing thread obtained in Example 1, in the surface treatment step, 5% by mass of resin manufactured by Nicca Chemical Co., Ltd. was used as the urethane resin cross-linking agent, and "Teron E-" manufactured by Matsumoto Yushi Seiyaku Co., Ltd. 530″ was used in an aqueous solution containing 0.5% by mass, and the amount applied was 1.5 to 3.5% by mass based on the dry weight of the batting. The heat treatment conditions were the same as in Example 1. The results for the stuffing yarn obtained are shown in Table 4.

(Example 3)
The stuffing yarn obtained in Example 1 is used, and in the surface treatment step, a 10% by weight aqueous solution of a resin manufactured by DIC Corporation is used as the acrylic cross-linking agent, and the amount applied is based on the dry weight of the stuffing. 1.5 to 3.5 mass % was sprayed. The heat treatment conditions were the same as in Example 1. The results for the stuffing yarn obtained are shown in Table 4.

(Example 4)
The stuffing thread obtained in Example 1 was used, and in the surface treatment step, a 10% by weight aqueous solution of a resin manufactured by DIC was used as the epoxy-based cross-linking agent, and the amount applied was based on the dry weight of the stuffing. 1.5 to 3.5 mass % was sprayed. The heat treatment conditions were the same as in Example 1. The results for the stuffing yarn obtained are shown in Table 4.

(Comparative example 1)
As the core yarn, trade name "Sirumi" manufactured by Unitika Fiber Co., Ltd., fineness: 33 decitex, number of filaments: 18 (33T/18F) was used. This polyester mixed yarn with different shrinkage is obtained by mixing two types of polyethylene terephthalate filament fibers having a triangular cross section, and has a heat shrinkage difference of 8%. A cross-sectional photograph is shown in FIG. As the filament, the hollow fiber shown in FIG. 4, fineness: 39 decitex, number of filaments: 12 (39T/12F, single fiber fineness: 3.25T/F) was used. The hollowness rate was 35%. A stuffing yarn was produced under the conditions shown in Table 2 using the air entangling device shown in FIG.
Next, in the surface treatment step, a silicone-based resin and a silicone-based cross-linking agent were applied. As the silicone resin, "Teron E-530" manufactured by Matsumoto Yushi Seiyaku Co., Ltd., 10% by mass, "Marpoteron E-722" manufactured by the same company as a cross-linking agent, 0.5% by mass aqueous solution was used, and the amount applied was dry weight. 1.5 to 3.5% by mass of the cotton batting. Next, in the heat treatment step, heat treatment was performed under the conditions shown in Table 3, and the silicone resin was fixed by heat curing. The results for the stuffing yarn obtained are shown in Table 4.

As is clear from Table 4, Examples 1 to 4 were confirmed to have higher bulkiness than Comparative Example 1. In particular, Example 2 had smoothness and a good texture, and was a preferable stuffing yarn.
As is clear from the above examples, it was confirmed that the stuffed article of the present invention is bulky, does not easily sag, has high heat retention, and is highly resistant to washing.

The stuffing yarn of the present invention is selected from futons, blankets, sleeping bags, pillows, cushions, mats, stuffed toys, throws, jackets, shirts, pants, skirts, vests, coats, winter clothing, innerwear, work clothes and neck warmers. Filled with at least one stuffing body.

1 stuffing yarn 2, 4a core yarn (long fiber A)
3,5a filament (long fiber B)
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 (10)

A stuffing yarn composed of at least two types of long fibers A (core yarn) and long fibers B (flower yarn) ,
The long fibers A (core yarn) are relatively shorter than the long fibers B (filament yarn) ,
The long fibers A (core yarn) and the long fibers B (flower yarn) are intertwined and integrated,
The long fiber A (core yarn) is a polyester mixed yarn with different shrinkage,
The long fibers B (flower threads) are polyester hollow fibers having a single fiber fineness of 3 decitex or more and a hollow ratio of more than 30%,
At least a urethane-based cross-linking agent, an acrylic-based cross-linking agent, or an epoxy-based cross-linking agent is applied to the stuffing thread as a cross-linking agent and fixed by curing,
The stuffing yarn is characterized in that it has a bulkiness of 140 mm or more as measured by a method conforming to JIS L 1903-1998 "Testing method for feathers used as filling materials for feather products". The stuffing yarn according to claim 1, wherein the stuffing yarn is further provided with a surface treatment agent. The stuffing yarn according to claim 2, wherein the cross-linking agent is at least a urethane-based cross-linking agent, and the surface treatment agent is at least a silicone-based resin. The stuffing yarn according to any one of claims 1 to 3 , wherein the polyester mixed yarn with different shrinkage is a mixed yarn of two types of polyethylene terephthalate filament fibers having a triangular cross section. The stuffing yarn according to any one of claims 1 to 4, 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 51 to 99% by mass when the long fibers B and the long fibers A are used as a parameter. A stuffing yarn according to any one of the preceding claims. The stuffing yarn according to any one of claims 1 to 6, wherein the long fibers B are 1.1 to 100 times longer than the long fibers A. A method for producing a stuffing yarn according to any one of claims 1 to 7,
Long fiber A (core yarn) and long fiber B (flower yarn) are selected from entangling processing, air jet processing , and processing in which continuous fiber B (flower yarn) is jetted against long fiber A (core yarn ). A method of manufacturing a stuffing yarn , characterized in that the stuffing yarn is integrated by at least one process. A stuffed article, characterized in that the stuffing yarn according to any one of claims 1 to 7 is filled in a side fabric. 10. A stuffed object according to claim 9 , wherein said stuffed object is machine washable.

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