JP2008303480A - Down proof structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a down proof structure having air permeability excellent in blowing in and filling feathers and shape recovery in using, preventing blowing-out of feathers, and excellent in durability allowing to retain feather blowing-out preventing effect even in the case of long time use and high use frequency. <P>SOLUTION: This down proof structure includes feathers in an outer fabric formed in a bag-like shape. A cotton pad nonwoven fabric which lies between the outer fabric and the feathers is made of a nonwoven fabric which has an average fineness of the constituent fiber of 0.5-5 decitex, a thickness of 5-20 mm, and a surface density of 50-200g/m<SP>2</SP>. The ventilation volume of the outer fabric is 3-15 (cm<SP>3</SP>/cm<SP>2</SP>×s). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a down-proof structure in which feathers are included in a bag-shaped fabric such as a down duvet, down jacket, cushion, etc., and is excellent in the effect of preventing feather blowout and has excellent productivity. The present invention also relates to a structure having excellent shape recoverability.

  The warmth and lightness of the feather itself can be used as a comforter, down jacket, cushion, etc. (hereinafter collectively referred to as a down-proof structure or simply a structure) by enclosing it in a bag-shaped fabric. Widely used. However, since feathers with a fine structure are difficult to get entangled, they have fluidity and are excellent in the touch after being made into a structure. On the other hand, when a fabric such as a general woven fabric or knit is used for the fabric, It is known that feathers blow out easily from the surface of the fabric.

With regard to such a down-proof structure, Patent Document 1 discloses a production technique for a duvet, and the fabric used for the duvet has an amount of air leaking per 1 cm ² under 1 atm per ^second. If the air permeability defined as 1 cm ³ is not 1 or less, it is described that it is usual that the above-mentioned feather blows out.

Furthermore, according to the “Feather Bedding Handbook” (hereinafter referred to as Non-Patent Document 1), the air permeability measured by the Frazier type tester defined in JIS L1096-1990 as “feather futon distribution association standard” (cm ³ / cm ² · s) is 3 or less for plain weave and twill weave as cotton fabric, 2.5 or less for satin weave, and 2 or less for filament fabric, spun fabric and cotton blend fabric as synthetic fabric.

  Patent Document 2 discloses a technique for preventing the movement of feathers and storing the bulkiness as a duvet when storing feathers or the like as batting. According to this publication, vertical and horizontal partition cloths are crossed and fastened to upper and lower front fabrics, a plurality of compartments are formed in the side fabric, and a three-dimensional quilt type futon structure is described in which feathers are stored in the compartments. It has been. In addition, the publication also discloses a process for producing a duvet, and when storing the feathers in the above-mentioned compartments, the air pressure by compressed air is used and the feathers are filled by pumping each compartment with a hose. To do.

In such a structure using feathers, a clogged fabric called a down proof represented by a high-density fabric has been used. That is, for example, it is configured to physically prevent the feathers from blowing out with a relatively high surface density of about 120 to 130 (g / m ² ). However, due to the relatively high areal density, it has been difficult to sufficiently reflect the characteristic of feathers that are light in weight to the down-proof structure. That is, in the case of the above woven fabric having a high areal density and a low air permeability, phenomena have been pointed out that stuffiness during use and shape recovery after the structure is pressed and deformed are impaired. In addition to this, even in the feather filling process as disclosed in Patent Document 2 described above, it is difficult to reduce the production cost because a device with a high air flow rate is required.

  From such a viewpoint, Patent Document 3 proposes a fabric in which a foamed emulsion obtained by adding a foam stabilizer to an emulsion resin and mechanically foamed is coated on a base fabric. In this publication, it is stated that by adopting the above-described configuration, it has a high air permeability of about 5 to 10 times that of fabrics conventionally used for duvets and can prevent feathers from blowing out. However, in this method, since the base fabric is coated, there are problems that flexibility is lowered and production costs are increased.

Therefore, the present applicant has proposed the down-proof structure of Patent Document 4. This technique is a down proof structure in which feathers are included in a bag-shaped fabric, and the fabric is a nonwoven fabric composed of ultrafine fibers. The nonwoven fabric has an air flow rate of 4 to 15 (cm ³ / cm ² · s), and has air permeability in the above-mentioned range, so it has excellent breathability and shape recovery during use, and is effective in preventing feather blowout. It is a down proof structure. Moreover, since it is hard to stuffy and the air is easy to escape, it has the advantage that a duvet that is easy to fold and has excellent storability can be realized.

  However, the market demand is further increased, high-value-added materials are required, and it is excellent in durability in the sense that it keeps the effect of preventing feather blowing even when used for a long time or frequently used, and the production cost There has been a demand for a down-proof structure that does not become too high.

JP-A-57-148912 No. 1-233336 JP 2002-69856 A Japanese Unexamined Patent Publication No. 2006-21030 Issued by Japan Feather Bedding Manufacturers' Cooperative, March 15, 1999, p175

  The present invention is a down proof structure that has excellent breathability and shape recovery during use to satisfy the above requirements, and that can also prevent feathers from being blown out. An object of the present invention is to provide a down-proof structure having excellent durability that keeps the effect of preventing feathers from blowing even when used or used frequently.

In the invention according to claim 1, in the invention according to claim 1, in the down proof structure in which feathers are included in the outer fabric formed in a bag shape, the batting between the outer fabric and the feathers. A non-woven fabric is interposed, and the non-woven fabric is made of a non-woven fabric having an average fineness of constituent fibers of 0.5 to 5 dtex, a thickness of 5 to 20 mm, and an areal density of 50 to 200 g / m ^2. The down-proof structure is characterized in that the air flow rate of the outer fabric is ³ to 15 (cm ³ / cm ² · s) [according to the Frazier method defined in JIS L1096]. According to the present invention, the down proof structure has excellent breathability and shape recovery during use, and is capable of preventing feathers from being blown out. Further, the down proof structure has excellent durability. The body can be provided. Specifically, since a non-woven fabric made of non-woven fabric is interposed between the outer fabric and the feathers (hereinafter, a collection of feathers may be simply referred to as feathers), part of the feathers is outer fabric. The feathers are entangled and caught in the non-woven fabric even if they reach the point, and there is an advantage that the feathers do not reach the outer fabric, or the time until the feathers reach the outer fabric becomes extremely long and the durability is excellent. In addition, even if it reaches the outer fabric and the tip of the feather is pierced into the outer fabric, the movement of the outer fabric and the batting nonwoven fabric during use of the down-proof structure causes the feathers once stuck to be pulled back by the batting nonwoven fabric. Conceivable.

  In the invention which concerns on Claim 2, the average fineness of the said batting nonwoven fabric is 0.7-2.5 dtex, It is a down-proof structure of Claim 1, Furthermore, it is flexible and excellent in durability. There is an advantage.

  The invention according to claim 3 is the downproof structure according to claim 1 or 2, wherein the outer fabric is a non-woven fabric composed of ultrafine fibers having an irregular cross section, and the outer fabric is more flexible. In addition, even if the fiber diameter is the same, there is an advantage that it is possible to realize a low air flow rate that is effective in preventing feather blowout compared to a circular cross section.

  The invention according to claim 4 is characterized in that the outer fabric is a non-woven fabric in which the ultrafine fibers that are long fibers are entangled with a high-pressure water stream. There is an advantage that the outer fabric becomes more flexible and has excellent durability.

  In the invention which concerns on Claim 5, the said outer fabric and the said batting nonwoven fabric are laminated and integrated, The downproof structure in any one of Claims 1-4 characterized by the above-mentioned Is advantageous in that it is easy to process.

In the invention according to claim 6, the feather is filled in the inner bag formed by forming a fabric having a ventilation amount of 100 (cm ³ / cm ² · s) or more into a bag shape, and the surface of the inner bag A feather-filled bag body is formed by being covered with the padding nonwoven fabric, and the feather-filled bag body is covered with the outer fabric. This is a down proof structure, and there is an advantage that feathers can be easily packed and processed easily in producing the down proof structure.

  According to the configuration of the present invention described above, since the outer fabric formed in a bag shape has the air permeability in the predetermined range, the outer fabric has air permeability excellent in blowing and filling feathers and shape recovery at the time of use, Excellent prevention of feather blowout. Moreover, since it is hard to stuffy and the air is easy to escape, it has an advantage that it can be easily folded and a duvet having excellent storage properties can be realized. In addition, since a non-woven fabric made of a specific non-woven fabric is interposed between the outer fabric and the feathers, it is a durable down proof that keeps the feathers from blowing out even when used for a long time or frequently used. A structure can be provided.

  Hereinafter, preferred embodiments of the down-proof structure according to the present invention will be described in detail.

The down proof structure of the present invention is a down proof structure in which feathers are included in an outer fabric formed in a bag shape, and a batting nonwoven fabric made of a nonwoven fabric is interposed between the outer fabric and the feathers. Yes. The outer fabric is not particularly limited as long as it has an air flow rate of ³ to 15 (cm ³ / cm ² · s) [according to the fragile method defined in JIS L1096], such as woven fabric, knitted fabric and nonwoven fabric. A fabric can be applied. A fabric having an air flow rate of ³ to 15 (cm ³ / cm ² · s) has a larger air flow rate than an outer fabric generally used as an outer fabric of a down-proof structure as described with respect to Non-Patent Document 1. Although it is a fabric that is not used for down-proofing, it is highly breathable and has excellent shape recovery during use. Moreover, there is an advantage that it is particularly excellent in flexibility as compared with the conventional downproof structure. Moreover, since it is hard to stuffy and the air is easy to escape, it has the advantage that a duvet that is easy to fold and has excellent storability can be realized. In the present invention, the lower limit of the air flow range is 3 (cm ³ / cm ² · s) or more in order to realize ease of feather blowing when producing a down-proof structure and shape recovery during use. In addition, when the air flow rate is high beyond the upper limit, it is difficult to prevent the feathers from blowing out, and it is necessary to be 15 (cm ³ / cm ² · s) or less. More preferably, it is 4 (cm ³ / cm ² · s) or more and 12 (cm ³ / cm ² · s) or less, more preferably 6 (cm ³ / cm ² · s) or more and 12 (cm ³ / cm). ² · s) or less.

  The outer fabric is a fabric that forms the surface of the down-proof structure, and is generally referred to as a side fabric. The outer fabric is not particularly limited as long as it is made of the fabric having the above-described air flow rate, and it is possible to apply plain weave, twill, or satin weave as cotton fabric, and filament fabric, spun fabric, cotton blended fabric, etc. as synthetic fabric. It is. Further, a fabric provided with coloring such as dyeing or a design pattern by hot embossing, or a fabric subjected to post-processing such as various flame retardant treatments is also possible. Moreover, when aiming at weight reduction, it is preferable that it is a nonwoven fabric. In the case of a non-woven fabric, a certain level of strength is required. From this point, the fabric is preferably a non-woven fabric composed of ultrafine fibers.

  The nonwoven fabric composed of the above-described ultrafine fibers is web-formed by a card method or a direct spinning method, but is preferably a relatively dense nonwoven fabric in order to realize the lower limit of the above-described air flow rate range. The fiber diameter of the ultrafine fiber is 10 μm or less, preferably 5 μm or less. In addition, for the purpose of satisfying the tear strength as an outer fabric, a fiber diameter of 0.5 μm or more, more preferably 1 μm or more is suitable, and a short fiber obtained by a drawing process and a long fiber produced by a spunbond method Is preferably used. Moreover, when using a nonwoven fabric consisting of long fibers for the outer fabric, there is no need to bond short fibers like a nonwoven fabric consisting of single fibers, and it is possible to prevent a decrease in strength at the bonding portion between short fibers, It is preferable to use a non-woven fabric made of long fibers because it has excellent strength such as tensile strength and durability.

  The cross-sectional shape of such an ultra-fine fiber may be circular, but it may be a modified cross-section that can realize a low air flow rate effective in preventing feather blowout compared to a circular cross-section even with the same fiber diameter. Is preferred. In particular, take the form of a splittable composite fiber that is spun into a relatively thick fiber diameter, web-formed after sufficient stretching, and forms ultrafine fibers by physical action such as high-pressure water flow or various chemical treatments. Is desirable. As for the cross-sectional shape of the ultrafine fiber produced by such a splittable conjugate fiber, various types having a major axis and a minor axis, such as a mandarin orange bag shape (fan shape or wedge shape) disclosed in JP-A-10-53948 and the like. The geometric shape can be In addition, when the above-mentioned ultrafine fiber has an irregular cross-section, it means a value converted from the cross-sectional area to the diameter of the circular cross-section.

  In addition, as the resin component constituting the splittable conjugate fiber, two or more kinds of resins capable of forming fibers can be selected. Specifically, polyamides such as nylon 6, nylon 66, and nylon-based copolymers can be selected. Polyethylene such as polyethylene terephthalate, polyethylene terephthalate copolymer, polybutylene terephthalate, polybutylene terephthalate copolymer, polyolefin such as polyethylene, polypropylene, polymethylpentene, polyurethane, polyacrylonitrile, vinyl copolymer, or polyglycol Examples thereof include aliphatic polyester polymers such as acid, glycolic acid copolymer, polylactic acid, and lactic acid copolymer.

In this invention, the batting nonwoven fabric which consists of a nonwoven fabric intervenes between the said outer fabric and the said feather. The said batting nonwoven fabric consists of a nonwoven fabric whose average fineness of a constituent fiber is 0.5-5 decitex, thickness is 5-20 mm, and surface density is 50-200 g / m < ² >. Since the nonwoven fabric which comprises a batting nonwoven fabric needs to be bulky for the surface density, it is preferable that it is formed from the fiber which has a crimp. Therefore, as a method for producing this nonwoven fabric, fibers called normal staple fibers having a fiber length of 15 to 100 mm and having a number of crimps of 5 to 70 / inch were formed on a fiber web using a card machine or an air lay apparatus. Thereafter, a non-woven fabric obtained by a method generally called a dry method, in which a constituent fiber is bonded by bonding using a heat-bonding fiber or an adhesive by a bonding method using a heat-bonding fiber and / or a spray method is preferable. . Since the nonwoven fabric by the dry method has many fibers oriented in the thickness direction, there is an advantage that the thickness is large and the thickness is not easily crushed. In addition, the staple fiber is crimped so that it can be opened by a card machine or the like, so that it becomes a bulky nonwoven fabric and has an advantage of excellent repulsive force in the thickness direction against compression. It is also possible to use an entangled nonwoven fabric in which such a fiber web is mechanically entangled using a needle or the like.

  In order to impart durability to the batting nonwoven fabric, it is preferable that the fibers are securely bonded to each other. For this reason, after forming a bulky fiber web containing thermally adhesive fibers, an adhesive is applied by spraying. Then, it is preferable that the fiber is mainly heat-bonded in the vicinity of the center of the fiber web, and is mainly bonded by an adhesive in the vicinity of both surfaces of the fiber web by heat treatment with hot air.

  The fiber used for the nonwoven fabric constituting the batting nonwoven fabric is not particularly limited, for example, polyclar fiber, polyvinylidene chloride fiber, polyvinyl chloride fiber, polyester fiber, polyamide fiber, acrylic fiber, modacrylic fiber, polyvinyl alcohol fiber, polypropylene fiber, Synthetic fibers such as polyethylene fibers and polyurethane fibers, recycled fibers such as rayon and viscose, and semi-synthetic fibers such as acetate can be used. Among these, synthetic fibers are preferable and difficult in consideration of washing resistance. It is also preferable to use a polyclar fiber, a polyvinylidene chloride fiber, a modacrylic fiber, a polyvinyl chloride fiber, etc. having excellent flammability as required.

  In addition, it is also preferable that the fiber constituting the batting nonwoven fabric includes a silicon-treated fiber. By including such a fiber, slippage occurs between the fibers, and as a result, a very soft feel is imparted to the batting nonwoven fabric. can do. The mixing ratio of the silicon-treated fibers is preferably 30 to 90% by mass, more preferably 40 to 80% by mass, and more preferably 50 to 70% by mass in the fiber web constituting the batting nonwoven fabric. Is more preferable.

  In addition, it is also preferable that the nonwoven fabric constituting the batting nonwoven fabric contains a heat-adhesive fiber. As an embodiment of such a heat-adhesive fiber, it has a low melting point component, and the low melting point component is at least one of the fiber surfaces. As long as it is a fiber exposed to the part, it is not particularly limited. (1) A mode consisting of only one fusion component, (2) A mode in which one or more resin components are coated with a fusion component (core-sheath type or sea-island type) Etc.), or one or more resin components and a fusion component are arranged next to each other (such as a side-by-side type). The fiber having a low melting point component is a resin in which the melting point of the resin component having the lowest melting point among the resin components constituting the thermal adhesive fiber is the lowest melting point among the resin components constituting the other fibers. The fiber is lower than the melting point of the component, and in this case, it is preferably 20 ° C. or more, more preferably 30 ° C. or more, and still more preferably 40 ° C. or more. The melting point in the present invention refers to a temperature giving an extreme value of a melting absorption curve obtained by heating from room temperature at a temperature rising temperature of 20 ° C./min using a differential calorimeter.

  The type of fiber-forming resin constituting the heat-adhesive fiber is not particularly limited. For example, polyamide resin (for example, 6 nylon, 66 nylon, etc.), polyester resin (for example, polyethylene terephthalate, poly Butylene terephthalate), polyolefin resins (eg, polyethylene, polypropylene, etc.), polyvinylidene chloride resins, and the like. Among these resins, it is preferable to select a polyester-based resin as at least one component because high strength and excellent durability can be imparted.

  The mixing ratio of the heat-adhesive fibers is not particularly limited, and is preferably 3 to 40% by mass, more preferably 5 to 30% by mass, and more preferably 5 to 20% by mass in the fiber web constituting the batting nonwoven fabric. It is more preferable to include.

  The non-woven fabric also preferably contains highly crimped fibers, and the number of crimps of the highly crimped fibers is preferably 5 to 20 / inch, and more preferably 6 to 15 / inch. Such a highly crimped fiber can be obtained by applying a spiral crimp by heat treatment of a side-by-side type composite fiber having two fiber-forming resin components or an eccentric core-sheath type composite fiber. .

  In this invention, it is required that the average fineness of the said batting nonwoven fabric is 0.5-5 dtex, It is more preferable that it is 0.5-3 dtex, It is 0.7-2.5 dtex Further preferred. If it is less than 0.5 decitex, it becomes impossible to secure the thickness of the non-woven fabric and it becomes difficult to use the card machine. Moreover, when it exceeds 5 dtex, there exists a problem that the fiber structure of a batting nonwoven fabric becomes coarse and the effect which capture | acquires a feather falls. In addition, as a method of calculating the average fineness, the fineness of each fiber is a decitex, b decitex, c decitex, etc., and the content ratio of each fiber is a ′ mass%, b ′ mass%, c ′ mass% ·・ ・ Then, the relational expression of (a ′ / a) + (b ′ / b) + (c ′ / c)... = (100 / x) is established, and the average fineness x is obtained from this relational expression. Can do.

The thickness of the said batting nonwoven fabric needs to be 5-20 mm, and it is more preferable that it is 8-15 mm. If it is less than 5 mm, there is a problem that the effect of capturing feathers is reduced because the thickness of the batting becomes too thin. Moreover, when it exceeds 20 mm, it becomes difficult to ensure sufficient filling amount of the feather to include. The thickness is expressed as a thickness under a pressure of 0.5 gf / cm ² .

Surface density of the batting nonwoven is required to be 50 to 200 g / ^{m 2,} and more preferably 80 to 150 g / ^{m 2.} If it is less than 50 g / m < ² >, there exists a problem that the thickness of a batting becomes thin too much and the effect which capture | acquires a feather falls. Moreover, when it exceeds 200 g / m < ² >, the density of a fiber becomes high too much and there exists a problem that it is inferior to the shape recoverability at the time of use of a downproof structure.

In the present invention, the non-woven fabric nonwoven fabric has the above-described configuration (the average fineness is 0.5 to 5 dtex, the thickness is 5 to 20 mm, and the surface density is 50 to 200 g / m ² ). Even if some of the feathers contained in the outer fabric reach the outer fabric, the feathers get entangled and caught in the padding nonwoven fabric, and the feathers do not reach the outer fabric or the time until it reaches the outer fabric is extremely long. This produces the effect of excellent durability. In addition, even if it reaches the outer fabric and the tip of the feather is stuck in the outer fabric, the effect of the feather that has been stuck once is pulled back by the cotton nonwoven fabric due to the movement of the outer fabric and the cotton nonwoven fabric when the downproof structure is used. Conceivable. In addition, when the down-proof structure is washed, the feathers are converged by water and easily blown out from the outer fabric. However, in the present invention, such a blow-out can be prevented by interposing a batting nonwoven fabric. This has the effect of improving washing resistance.

  Further, by interposing the batting nonwoven fabric between the outer fabric and the feathers of the down-proof structure, a thick batting nonwoven fabric is interposed between the outer fabric and the feathers, and the outer fabric was touched. Sometimes the axis of the feather shaft is extremely small. As a result, there is an effect that a down-proof structure having a very excellent feel can be obtained.

  The down proof structure of the present invention is a down proof structure in which feathers are included in an outer fabric formed in a bag shape, and a batting nonwoven fabric made of a nonwoven fabric is interposed between the outer fabric and the feathers. However, such a form is not particularly limited as long as a non-woven fabric made of non-woven fabric is interposed between the outer fabric and the feather, for example, the outer fabric and the non-woven fabric are not joined, A form in which a padding nonwoven fabric is formed in a bag shape and feathers are wrapped in the bag-like body is possible. Further, in terms of efficiency of feather filling work and ease of handling of feathers, for example, the outer fabric and the batting nonwoven fabric may be in the form of a laminated integrated product. At the time of this integration, for example, a method in which an adhesive resin is applied in a dotted manner to an outer fabric or a batting nonwoven fabric, and the outer fabric and the batting nonwoven fabric are bonded, or a method such as bonding them together with a hot melt nonwoven fabric is applied. be able to. Next, this laminated integrated product can be formed into a bag shape, and the bag-like body can be filled with feathers. In such a form, there is an advantage that processing is easy in producing a down-proof structure.

In addition, in terms of efficiency of feather filling work and ease of handling of feathers, for example, a cloth having a large air flow rate of 100 (cm ³ / cm ² · s) or more such as tricot, net, or non-woven fabric is used as a bag. There is a down-proof structure obtained by filling a feather with a feather, further forming an outer fabric in a bag shape, and interposing a non-woven fabric between the outer fabric and the fabric. More specifically, a fabric with a large air flow rate of 100 (cm ³ / cm ² · s) or more is formed in a bag shape to form an inner bag, and the inner bag is filled with feathers. In addition, a feather-filled bag body is formed by covering the surface of this inner bag with the above-mentioned non-woven fabric, and further, an outer fabric is formed in a bag shape, and the feather is filled in this bag-shaped outer fabric. There is a down-proof structure obtained by inserting a bag. Such a structure has an advantage that feathers can be easily packed and processed easily in producing a down-proof structure.

Further, the above-mentioned batting nonwoven fabric and a batting nonwoven fabric sheet obtained by laminating and integrating a support sheet made of a fabric having a large air flow rate of 100 (cm ³ / cm ² · s) or more such as tricot, net or non-woven fabric, for example. It is also possible to form this batting nonwoven fabric sheet into a bag-shaped inner bag and fill the inner bag with feathers. If it is such a form, when intensity | strength is insufficient only with a batting nonwoven fabric, there exists an advantage that packing of a feather becomes still easier and processing is easy.

As described above, as a fabric having a large air flow rate of 100 (cm ³ / cm ² · s) or more such as tricot, net, or nonwoven fabric used for the inner bag, the air flow rate is 200 (cm ³ / cm ² · s) or more, more preferably 300 (cm ³ / cm ² · s) or more.

Further, as a preferred embodiment of the down-proof structure of the present invention, a fabric having a large air flow rate of 100 (cm ³ / cm ² · s) or more is formed in a bag shape to form an inner bag. The inside bag is filled with feathers, and the surface of the inside bag is covered with the above-mentioned padding nonwoven fabric to form a feather-filled bag body. On the other hand, the outer fabric is formed into a bag shape, and the upper and lower outer fabrics are formed. There is a down-proof structure obtained by crossing and fastening vertical and horizontal partition cloths, forming a plurality of compartments in a bag-like outer fabric, and inserting the feather-filled bag into the compartments. With such a structure, there is an advantage that uneven distribution of feathers can be prevented when the outer fabric formed in a bag shape has a large size.

In the down-proof structure of the present invention, a cotton non-woven fabric is interposed between the outer fabric and the layer made of feathers, and the feathers are included in the bag-like cotton non-woven fabric. And the batting nonwoven fabric has the above-mentioned configuration (average fineness is 0.5 to 5 dtex, thickness is 5 to 20 mm, and surface density is 50 to 200 g / m ² ). For this reason, even if a part of the feathers contained in the padding nonwoven fabric tries to reach the outer fabric, the feathers are entangled and caught in the padding nonwoven fabric, or the feathers do not reach the outer fabric or reach the outer fabric. The time until it becomes extremely long and the effect of excellent durability occurs. In addition, even if it reaches the outer fabric and the tip of the feather is stuck in the outer fabric, the effect of the feather that has been stuck once is pulled back by the cotton nonwoven fabric due to the movement of the outer fabric and the cotton nonwoven fabric when the down-proof structure is used. Conceivable. Thus, the down-proof structure is excellent in the effect of preventing the feathers from blowing out, and the inner fabric for feathers is highly breathable and flexible, so that the entire down-proof structure has a flexible structure. In addition, when the down-proof structure is washed, the feathers are converged by water and easily blown out from the outer fabric. However, in the present invention, such a blow-out can be prevented by interposing a batting nonwoven fabric. This has the effect of improving washing resistance.

  Further, since the batting nonwoven fabric is interposed between the outer fabric and the layer made of feathers, a thick batting nonwoven fabric is interposed between the outer fabric and the feathers, and when the outer fabric is touched, the feathers The number of hits of the shaft becomes extremely small. As a result, there is an effect that a down-proof structure having a very excellent feel can be obtained.

  As described above, the down-proof structure of the present invention is excellent in the effect of preventing feathers from being blown out, has air permeability excellent in feather blowing and shape recovery during use, and has a soft texture. Furthermore, even when used for a long time or frequently used, it has excellent durability of maintaining the effect of preventing feathers from blowing out.

  Examples of the present invention will be described below, but these are only suitable examples for facilitating the understanding of the present invention, and the present invention is not limited to the contents of these examples.

(Feather blowing test)
The evaluation sample is evaluated for feather blowing. In order to facilitate the visual observation of the feathers that have been blown out, the test sample is placed on a black test stand, and compression is repeated by hitting the sample 400 times with both hands at an equal speed for 180 seconds. After this, the feathers that have fallen on the test bench are collected with an adhesive tape, and the number is visually counted. The test is performed on two samples, and the average value of the number of feathers that have fallen is calculated, and the average value is used for grading according to the following evaluation criteria.

(Evaluation criteria)
Grade 5: 3 or less Grade 4: 4 to 10 Grade 3: 11 to 16 Grade 2: 17 to 25 Grade 1: 25 or more

(Feather blowing test after washing test)
The washing operation is performed in accordance with the test method described in No. 103 of “Appendix Table 1 Test Method by Symbol—Washing Method (Washing)” of “JIS L0217: 1995“ Signs for Handling of Textile Products and Their Display Methods ”.
Add water at a temperature of 40 ± 3 ° C. to the level line of the automatic reversing washing machine (water volume 32 liters), add phosphorus-free synthetic detergent at a rate of 2 g / liter, and stir well to dissolve the detergent. A few load cloths such as cotton cloth are added to several test samples so that the amount of the washing substance is 600 g, and the resultant is put into the washing liquid to perform the washing operation. This washing operation is repeated five times as an operation of washing for 15 minutes, dehydrating with a centrifugal dehydrator for 1 minute, and rinsing with fresh water for 5 minutes. Thereafter, the test sample is naturally dried to obtain a feather blowout test sample. Thereafter, the feathers protruding on the surface of the test sample are visually counted. The test is performed on two test samples, the average value of the number of feathers protruding on the surface is calculated, and the average value is used for grading according to the following evaluation criteria.

(Evaluation criteria)
Grade 5: 3 or less Grade 4: 4 to 10 Grade 3: 11 to 16 Grade 2: 17 to 25 Grade 1: 25 or more

(Raw material adjustment)
(1) Production of outer fabric A A non-woven fabric composed of ultrafine fibers corresponding to JP-A-10-53948 is dyed, and the surface density is 104 g / m ² and 240 gf / cm ² . An outer fabric A having a thickness of 0.25 mm under pressure was prepared. This long-fiber non-woven fabric is obtained by forming a web of composite long fibers having a division number of 16 in which polyester and polyamide are arranged in a mandarin orange bag shape (fan shape or wedge shape) by a spunbond method and then forming ultrafine fibers by high-pressure water flow It is. The cross section of this ultrafine fiber showed a wedge shape. According to observation with an electron microscope, the fiber diameter converted to a circular cross section was about 3 μm, and about 90% or more of the original composite long fiber was divided. The aeration rate of this fabric measured by the Frazier method defined in JIS L1096 was 9.4 (cm ³ / cm ² · s).

(2) Production of outer fabric B A long-fiber non-woven fabric composed of ultrafine fibers corresponding to JP-A-10-53948 was subjected to dot-like embossing with a total seal area of 12%, and the surface density was 104 g. / ^{m 2,} thickness under a pressure of 240gf / cm ² was prepared outer fabric B of 0.23 mm. This long-fiber non-woven fabric is obtained by forming a web of composite long fibers having a division number of 16 in which polyester and polyamide are arranged in a mandarin orange bag shape (fan shape or wedge shape) by a spunbond method and then forming ultrafine fibers by high-pressure water flow It is. The cross section of this ultrafine fiber showed a wedge shape. According to observation with an electron microscope, the fiber diameter converted to a circular cross section was about 3 μm, and about 90% or more of the original composite long fiber was divided. The air flow rate of this fabric was 5.5 (cm ³ / cm ² · s).

(3) Production of batting nonwoven fabric A 60% of 1.1 dtex polyester fiber (fiber length 38 mm) coated with a silicone-based oil agent to improve the slipperiness of the fiber surface, and 2.2 dtex high crimped polyester fiber 30% by mass (fiber length 64 mm, side-by-side type composite fiber, first resin component and second resin component are polyester resin, 7.5 crimps / inch), 2.2 decitex thermal adhesive fiber (fiber length 51 mm, core-sheath type composite fiber, polyester fiber having a melting point of 110 ° C. is a sheath component, and polyester resin having a melting point of 250 ° C. is a core component) 10% by mass using a card machine, the surface density is 112 g / m ² fiber webs (cross lay fiber webs) were prepared. Next, an emulsion resin of acrylic resin (Tg = −34 ° C.) is prepared, sprayed on both sides of this fiber web so that the surface density per side is 4 g / m ² (dry solid content), and then dried. Then, a filling non-woven fabric A having a surface density of 120 g / m ² and a thickness of 12.2 mm under a pressure of 0.5 gf / cm ² was prepared. The air permeability of this batting nonwoven fabric A was 161 (cm ³ / cm ² · s). Moreover, the average fineness of the constituent fibers of this batting nonwoven fabric A was 1.4 dtex.

(4) Preparation of fabric A for inner bag As fabric A used for inner bag, polyester multifilament yarn with 33 dtex and 12 filaments is used, and the knitting density is the number of loops per inch per course / well. A tricot fabric composed of 40/28 reverse half warp knitting was prepared. This inner bag fabric A had an areal density of 44 g / m ² , a thickness of 0.16 mm under a pressure of 240 gf / cm ² , and an air flow rate of 688 (cm ³ / cm ² · s). It was.

Example 1
The above-mentioned inner bag fabric A is sewed into a single bag to form an inner bag A, and 30 g of white goose down consisting of 90% by weight down and 10% by weight feather is blown onto the inner bag A as a feather. Then, the surface of the inner bag A was wrapped with the above-described batting nonwoven fabric A, and the overlapping portion of the batting nonwoven fabric A was sewn and fixed to obtain a feather-filled bag body A. Next, the outer fabric A described above is sewn into a bag shape so that the outer shape becomes a 30 cm × 30 cm square to form a bag-like body, and the feather-filled bag body A is inserted into the bag-like body, The open end of the bag-like body was closed by sewing to produce a down-proof structure of Example 1 with the outer fabric A as a side fabric. The outer fabric A was sewn with a two-needle industrial sewing machine under the condition that the number of stitches was 18 (lines / 3 cm). The evaluation results of the obtained down-proof structure are shown in Table 1.

(Example 2)
A downproof structure of Example 2 was produced in the same manner as in Example 1 except that the outer cloth B was used instead of the outer cloth A. The evaluation results of the obtained down-proof structure are shown in Table 1.

(Comparative Example 1)
A down-proof structure of Comparative Example 1 was produced in the same manner as in Example 1 except that the batting nonwoven fabric A was not used. That is, the inner bag A is formed by sewing the above-mentioned inner bag fabric A into a single bag shape, and white goose down 30 g consisting of 90% by weight down and 10% by weight feathers as a feather on the inner bag A. To obtain a feather-filled bag body B. Next, the outer fabric A is sewed into a bag shape so that the outer shape is 30 cm × 30 cm square to form a bag-like body, and the feather-filled bag body B is inserted into the bag-like body, The open end of the bag-like body was closed by sewing to produce a down-proof structure of Comparative Example 1 with the outer fabric A as a side fabric. The outer fabric A was sewn with a two-needle industrial sewing machine under the condition that the number of stitches was 18 (lines / 3 cm). The evaluation results of the obtained down-proof structure are shown in Table 1.

(Comparative Example 2)
A down-proof structure of Comparative Example 2 was produced in the same manner as Comparative Example 1 except that the external fabric B was used instead of the outer fabric A. The evaluation results of the obtained down-proof structure are shown in Table 1.

(Table 1)

  As can be understood from Table 1 above, the down-proof structure according to Example 1 has very few feather blowouts during washing, as compared with the structure of Comparative Example 1 that does not have a batting nonwoven fabric. I understand that. Moreover, it turns out that the down proof structure which concerns on Example 2 has very few feather blowing at the time of washing compared with the structure of the comparative example 2 which does not have a batting nonwoven fabric. Moreover, since the downproof structure which concerns on Example 1 and 2 also has the resilience by a batting nonwoven fabric, it was a structure which has a soft touch as a result. In addition, compared with Comparative Examples 1 and 2, when touching the outer fabric, the structure of the touch was very good with very little contact with the axis of the feathers. Moreover, since it was excellent also in air permeability, it was a structure excellent in shape recovery property.

Claims (6)

In a down-proof structure in which feathers are included in an outer fabric formed in a bag shape, a padding nonwoven fabric is interposed between the outer fabric and the feathers, and the padding nonwoven fabric has an average fineness of constituent fibers of 0. .5-5 dtex, a thickness of 5-20 mm, and a surface density of 50-200 g / m ² , and the outer fabric has an air flow rate of 3-15 (cm ³ / cm ^2. s) A down-proof structure characterized in that it is [by the Frazier method defined in JIS L1096].   The downproof structure according to claim 1, wherein an average fineness of the batting nonwoven fabric is 0.7 to 2.5 dtex.   The down-proof structure according to claim 1 or 2, wherein the outer fabric is a non-woven fabric composed of ultrafine fibers having an irregular cross section.   The down-proof structure according to any one of claims 1 to 3, wherein the outer fabric is a nonwoven fabric in which the ultrafine fibers made of long fibers are entangled with a high-pressure water flow.   The downproof structure according to any one of claims 1 to 4, wherein the outer fabric and the batting nonwoven fabric are laminated and integrated. An inner bag formed by forming a fabric having a ventilation rate of 100 (cm ³ / cm ² · s) or more into a bag shape is filled with the feathers, and the surface of the inner bag is coated with the non-woven fabric. 6. A down-proof structure according to claim 1, wherein a feather-filled bag is formed, and the feather-filled bag is covered with the outer fabric.