JPH09250062A - Polyester fiber duvet - Google Patents

Abstract

(57) Abstract: A quilt of a futon contains a polyester fiber, and the polyester fiber is a composite of a polyetheresteramide R1 component and a polyester R2 component,
The polyether ester amide R1 component is mixed in an amount of 15 to 50% by weight, and is added in an atmosphere of 30 ° C. × 90% RH for 24 hours.
A polyester-based fiber blanket having a moisture absorption rate of 2% or more after standing for a while, and further, the side material and the sewing thread of the bedding are both substantially composed of polyester-based fibers. [Effect] According to the present invention, it is possible to provide a polyester fiber quilt which has good yarn-forming property during the production of stuffed cotton fibers, has excellent bulkiness as a quilt, has a comfortable feeling of use, and is easy to recycle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a comforter, a comforter, a comforter, a comforter, and the like. More specifically, the polyester fiber of stuffed cotton is provided with hygroscopicity to improve the comfort of use of these products. Moreover, it is an object of the present invention to provide a polyester fiber quilt which is easily recycled by forming the entire quilt with polyester fibers.

[0002]

2. Description of the Related Art Conventionally, polyester-based synthetic fiber stuffed cotton has been used in many products for the above-mentioned purpose because of its excellent bulkiness, light weight and excellent heat retention. This polyester-based synthetic fiber stuffed cotton is made to have a three-dimensional crimp by composite spinning, asymmetric cooling, or the like to have excellent bulkiness, or, for example, as described in Japanese Patent Publication No. 6-51076, the forward direction. A combination of type three-dimensional crimped fibers and reversal type three-dimensional crimped fibers makes it excellent in bulkiness under no load or under load, or has a deformed fiber cross section such as hollow, fiber fineness, fiber length Alternatively, the oil agent is optimized to improve the bulkiness and texture. Further, in order to obtain a soft texture by adding a silicone resin, for example, Japanese Patent Publication No. 52-28426 and Japanese Utility Model Publication No. 53-5.
Inventions described in Japanese Patent No. 353, Japanese Patent Publication No. 4-34435, etc. are found. However, since all of these polyester synthetic fiber stuffed cotton have no hygroscopicity and tend to be stuffy, they are used as stuffed cotton for winter or compound, and are hardly used for summer. It is desired to eliminate this drawback and develop a cotton for all seasons including summer.

On the other hand, from the two needs of environmental protection of the earth and efficient use of resources, the problem of processing and reusing industrial waste and general household waste is becoming more and more important, and in many fields. , Many people are interested. However, in the field of futons, most used futons have been landfilled so far, and recycling technology is still in the development stage.

Conventionally, the proposed recycling techniques for textile products are roughly classified into the following three types.

The first technique is thermal recycling.
In this method, products are cut into appropriate forms, burned, and reused as in-house power generation and various types of heat energy. But,
This method is not preferable from the viewpoint of resource reuse.

The second technique is material recycling. This method differs from the following chemical recycling in that it is pelletized physically and mechanically. When this recycled pellet is reused, it is divided into two cases. One is to develop a product as a new material in consideration of the fact that various materials are mixed, such as flower beds, pots for bonsai, and decorative piles for sidewalks. The other is composed of 100% the same material as described in JP-A-5-219935 and JP-A-6-123052, and collected, pelletized,
This is the case of melting and reusing.

The third technique is chemical recycling.
The chemical recycling that best matches the basic concept of recycling is chemical recycling, which collects products, decomposes them, and returns them to their original raw materials. However, since few fiber products are generally made from a single material and the material composition is diverse, it takes some time to develop an economical depolymerization system. Means for solving this problem, for example, in the case of carpet products, is described in Japanese Patent Application Laid-Open No. 5-117441. As an auxiliary means for improving the efficiency of depolymerization, the carpet is fragmented, separated into small pieces containing nylon 6 which is a pile material and other small pieces by a separator, and the small pieces containing nylon 6 are supplied to a depolymerization system. This is a method of recovering ε-caprolactam as a raw material. However, even if the carpet is cut into small pieces and separated by mechanical means, for example, due to a difference in specific gravity due to a cyclone, etc., the small pieces containing nylon 6 still contain polyester spunbond of tufting base cloth and chloride of the sealing layer and backing layer. Since it contains vinyl, neoprene rubber, polyethylene, etc., the difficulty of depolymerization purification has never been solved.

That is, there has not been disclosed a polyester-based fiber quilt which uses hygroscopic polyester-based cotton stuffing and is comfortable to use and easy to recycle.

[0009]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a polyester fiber quilt which has a hygroscopic and comfortable feeling and is easy to recycle.

[0010]

In order to solve the above-mentioned problems, the polyester fiber cloth of the present invention has the following constitution.

That is, the quilted cotton of the futon contains polyester fibers, and the polyester fibers are composed of a polyether ester amide R1 component and a polyester R2 component, and the polyether ester amide R1 component is 15 to 15 parts.
50% by weight is composited, the moisture absorption rate after standing for 24 hours in an atmosphere of 30 ° C. × 90% RH is 2% or more, and the side material and the sewing thread of the futon are both substantially composed of polyester fibers. It is a polyester-based fiber blanket.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings with reference to embodiments.

The futon of the present invention uses a polyester fiber having hygroscopicity for the stuffed cotton, and imparts comfort to use due to moisture absorption, and at the same time, both the side fabric and the sewing thread of the futon are substantially composed of polyester fiber. It is a polyester-based futon that is easy to recycle.

The structure of the polyester fiber stuffed cotton having a hygroscopic property is a composite of a polyetheresteramide R1 component and a polyester R2 component, and the polyetheresteramide R1 component has a high hygroscopic property. 1, FIG. 2 and FIG. 3 are schematic cross-sectional views of an embodiment of the conjugate fiber used in the present invention. In FIG. 1, R1 and R2 are concentric core-sheath composites, and FIG. 2 is R1 and R2. FIG. 3 is an example showing a blended elliptical hollow composite, and a trilobal hollow composite in which R1 and R2 are composited in three layers.

The polyetheresteramide R1 component of the cotton pad used in the present invention is a hygroscopic component, and means a block copolymer having an ether bond, an ester bond and an amide bond in the same molecular chain. For example, one or more polyamide-forming components (a) selected from lactams, aminocarboxylic acids, salts of diamines and dicarboxylic acids, and polyether ester-forming components composed of dicarboxylic acids and poly (alkylene oxide) glycols. A block copolymer polymer or the like obtained by subjecting (ii) to a polycondensation reaction can be used.

As the polyamide-forming component (a) of the polyether ester amide of the present invention, caprolactam,
Lactams such as enanthlactam, dodecanolactam and undecanolactam, ω-aminocarboxylic acids such as aminocaproic acid, 11-aminoundecanoic acid and 12-aminododecanoic acid, precursors of nylon 66, nylon 610, nylon 612, etc. The diamine-dicarboxylic nylon salt can be used, and these can be used alone or in combination of two or more. Preferred polyamide-forming components are ε-caprolactam, a nylon 66 salt.

On the other hand, a dicarboxylic acid having 4 to 20 carbon atoms and poly (alkylene oxide) glycol can be used as the polyether ester component (b) constituting the soft segment of the polyether ester amide. As the dicarboxylic acid having 4 to 20 carbon atoms, succinic acid,
Aliphatic dicarboxylic acids such as glutaric acid, adipic acid, vimelic acid, suberic acid, sebacic acid, dodecadiic acid, etc., aromatic dicarboxylic acids such as terephthalic acid, isophthalic acid, 2,6-naphthalenedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid An alicyclic dicarboxylic acid such as an acid can be used, and one kind or a mixture of two or more kinds can be used.
Preferred dicarboxylic acids are adipic acid, sebacic acid, dodecadic acid, terephthalic acid, isophthalic acid.

As the poly (alkylene oxide) glycol, polyethylene glycol, poly (1,2)
-And 1,3-propylene oxide) glycol, poly (tetramethylene oxide) glycol, poly (hexamethylene oxide) glycol, random or block copolymerization of ethylene oxide and propylene oxide or tetrahydrofuran, and the like can be used. The number average molecular weight of the poly (alkylene oxide) glycol is preferably 300 to 10,000, more preferably 500.
It can be used in the range of up to 4000.

The polyetheresteramide block copolymer used in the present invention can be obtained by polycondensing the above-mentioned polyamide-forming component (a) and polyetherester-forming component (b). As an industrially preferable method, there is a method in which (a) and (b) are heated and polycondensed under reduced pressure. In this case, in order to obtain a polymer having a high degree of polymerization and less coloring, for example, antimony oxide, titanium It is preferable to add an acid ester or the like as a polycondensation catalyst, and add phosphoric acid, a phosphoric acid ester or the like as a coloring inhibitor. The weight ratio of (a) and (b) in the polyether ester amide is preferably 99/1 to 5/90, more preferably 80 /
It is in the range of 20 to 10/90.

As described above, the thermoplastic polymer constituting the hygroscopic layer of each of the polyester fiber stuffed cotton fibers may be composed of only the polyether ester amide as described above. It may be composed of a blend component of polyether ester amide R1 and polyester R2 as long as the property is not impaired.

The polymer may be blended either in a state in which the individual polymers are mixed with each other to be homogeneous, or in a state in which the individual polymers coexist without being completely mixed. In the present invention, the states of the polymers are not particularly limited, but from the viewpoint of moisture absorption efficiency, it is preferable that the polyether ester amide R1 and the polyester R2 exist separately in one fiber.

Polyester R2 of stuffed cotton in the present invention
Although the component is not particularly limited, for example, terephthalic acid,
A linear polyester such as polyethylene terephthalate, polybutylene terephthalate, or polyethylene 2,6-naphthalate containing 2,6-naphthalenedicarboxylic acid or an ester thereof as a main dicarboxylic acid component and ethylene glycol or tetramethylene glycol as a main glycol component. Can be used. Of these, polyethylene terephthalate (normal polyester) is preferably used from the viewpoint of increasing the strength of the fiber of the present invention.

Further, the polyether ester amide R1 component and the polyester R are used as the thermoplastic polymer which constitutes the moisture absorbing layer of each of the fibers of the polyester fiber stuffed cotton.
The modified polyester terephthalate obtained by copolymerizing a sulfonate compound is preferable as the polyester R2 component when it is used as a blend component with the two components because it has good compatibility with the polyetheresteramide R1 component. Here, a preferable sulfonate compound as a copolymerization component of the modified polyester is 5-sodium sulfoisophthalic acid, 5- (tetraalkyl) phosphonium sulfoisophthalic acid and ester derivatives thereof, sodium р-hydroxyethoxybenzenesulfonate, 2,5-
Potassium bis (hydroxyethoxy) benzenesulfonate and the like can be used. The copolymerization amount of the sulfonate compound is preferably 0.1 to 7 mol% with respect to the acid component, more preferably 0, in view of compatibility with the polyether ester amide R1 component and physical properties of the obtained wadding fiber. 0.5 to 5 mol%. Further, a part of the dicarboxylic acid component of the polyester R2 component is a dicarboxylic acid such as adipic acid or isophthalic acid and an ester derivative thereof, an oxycarboxylic acid such as r-oxybenzoic acid and r-β-oxyethoxybenzoic acid and an ester derivative thereof. May be replaced with.

Further, a part of the glycol component is, for example,
It may be replaced with glycol such as 1,4-bis (β-oxyethoxy) benzene, bisglycol ether of bisphenol A, and polyalkylene glycol. Furthermore, pentaerythritol, trimethylolpropane,
A chain branching agent such as trimellitic acid or trimesic acid can also be used.

In addition, the polyester R2 component of the present invention includes polysodium acrylate, poly N vinylpyrrolidone, polyacrylic acid, and copolymers thereof, polymethacrylic acid and copolymers thereof, polyvinyl alcohol and copolymers thereof. A hygroscopic / water-absorbing substance such as a polymer, polyacramide and a copolymer thereof, a cross-linked polyethylene oxide polymer, and a general-purpose thermoplastic resin such as polyolefin and polyamide may be contained to such an extent that the object of the present invention is not impaired.

In addition to the above, it is also preferable to add various antioxidants, anti-coloring agents, light-proofing agents, antistatic agents, etc. to the wadding fibers, if necessary, in addition to pigments such as titanium oxide and carbon black. .

In the wadding fiber of the present invention, the polyether ester amide R1 component is the main moisture absorbing component, and the combined amount of the polyether ester amide component must be 15 to 50% by weight. If it is less than 15% by weight, there is a problem that it is difficult to obtain a sufficient feeling of use due to moisture absorption. 50% by weight
If it exceeds, the rigidity of the whole fiber will be decreased, and it will be a cause of crimp robustness and insufficient repulsion when compressed as a wadding.At the same time, the structural difference due to asymmetric cooling during the wadding of the wadding fiber will be described later. It is difficult to give enough, three-dimensional crimp is difficult to obtain sufficiently, and the polyether ester amide component of the intermediate layer is likely to be present on the fiber surface, resulting in sticking between single fibers, resulting in spinnability during the production of short fibers. Not only worsens the cost, but also increases the cost due to the increase in expensive ingredients.

The stuffed cotton fiber of the present invention has a temperature of 30 ° C. × 9.
It is necessary to determine the composite amount of the polyether ester amide component and the fiber morphology so that the moisture absorption rate after standing in an atmosphere of 0% RH for 24 hours becomes 2% or more. If it is less than 2%, there is a problem that the desired comfort cannot be obtained due to moisture absorption. In order to further improve the comfort of use, it is more preferable that the moisture absorption rate be 4% or more. The upper limit of the moisture absorption rate is not particularly limited, but according to the knowledge of the present inventors, it is generally preferably 30% or less from the viewpoint of not impairing the spinnability during the production of short fibers.

The batting of the present invention is a composite of a polyether ester amide R1 component and a polyester R2 component polymer.
The component is a hygroscopic component and is generally easily deformed at a low temperature. The fiber structure has a structure in which the polyether ester amide R1 component is wrapped with a polyester R2 component polymer as shown in FIG. 1 or FIG. It is preferable to have good spinnability and stability of the fiber structure during production. In addition, in order to increase the bulkiness of the stuffed cotton fibers by hollowing the fibers, or to perform three-dimensional crimping by performing an asymmetric cooling treatment immediately below the mouthpiece during the manufacture of the stuffed cotton fibers in order to increase the bulkiness of the stuffed cotton fibers. Is a structure in which the polyether ester amide R1 component and the polyester R2 component are blended as shown in FIG. 2 to make the fiber cross-section hollow, or as shown in FIG. 3, the polyether ester amide R1 component is wrapped with a polyester R2 component polymer. Those hollowed out are preferred.

Further, the stuffed cotton fiber has a fineness of 0.5 to 3
Short fibers having 0 denier and a fiber length of 10 to 100 mm are preferably used. If it is thinner than 0.5 denier, the bulkiness of the aggregate required as a stuffed cotton tends to be low, and the resilience to compression and the recoverability of bulk tend to be lowered. If it is thicker than 30 denier, the texture tends to be coarse and hard. Further, if the fiber length is shorter than 10 mm, the entanglement between the fibers is deteriorated and the cotton breaks easily, and if it is longer than 100 mm, the fiber-opening property and the cotton-making property tend to be deteriorated.

The crimp may be appropriately determined depending on the intended use, but mechanical crimp is preferably provided in order to improve bulkiness, softness, resilience to compression and recovery or cotton making. It is more preferable that the fibers are three-dimensionally crimped by imparting a structural difference to each fiber by an asymmetrical cooling treatment at the time of producing the stuffed cotton fiber. The number of crimps is 3 to 10 peaks / 25
mm, and the degree of crimping is preferably 5 to 30%.

In the futon of the present invention, it is preferable that 30 to 70% by weight of composite fiber and 70 to 30% by weight of ordinary polyester fiber, especially hollow fiber are mixed as the cotton. By blending ordinary polyester fibers, the bulkiness can be further enhanced, the moisture transferability in the blended cotton aggregate can be improved, and the feeling of use can be improved. If the content of ordinary polyester fibers is less than 30% by weight, the effect of improving bulkiness may be reduced, and if it exceeds 70% by weight, the proportion of the composite fibers is reduced and the comfort in use due to moisture absorption tends to be insufficient.

The cross-sectional shape of the stuffed cotton fiber of the present invention is not limited to a round shape, but is preferably a modified cross-section such as a polygonal shape and hollowed.

Another aspect of the present invention is to provide a futon that is easy to recycle. Common futons are made of cotton, which is excellent in touch, hygroscopicity, cotton wicking resistance, and pill resistance. In addition, embroidery threads for side cloths, side sewing threads, type and handling label, etc. Fibers with a different chemical composition than the wadding fibers are often used. Therefore, in the case of recovering and reusing, it is possible to cut the side ground and take out only the stuffed cotton fiber for reuse, but it takes time and becomes a major obstacle. Therefore, in the present invention, the quilt, the side cloth, and the side sewing thread of the futon are all substantially made of polyester fibers, and the futon is easy to recycle.

Further, in order to improve recyclability,
It is also preferable that the accessories such as the product type and the handling label are substantially composed of polyester fiber or resin.

In the futon of the present invention, the constituent fibers are all polyester fibers, so that material recycling, chemical recycling and thermal recycling are possible. From the viewpoint of ease of reuse and recycling effect, material recycling in which recovered products are melt-pelletized and melt-spun and reused is preferable.

[0037]

Next, the present invention will be described more specifically with reference to examples and comparative examples. The measuring methods of various characteristics described in the present invention are as follows.

(1) Moisture absorption rate The dry weight of the stuffed cotton fiber used in the present invention and 30 ° C x
The value was calculated from the following formula from the weight change after standing for 24 hours in a thermo-hygrostat under an atmosphere of 90% RH.

Moisture absorption rate (%) = [(weight after moisture absorption−weight in absolute dry) / weight in absolute dry] × 100 (2) Fineness It was measured according to the method of JIS L1015-7-51A.

(3) Average fiber length (cut length) JIS L1015A method (staple diagram method)
It measured according to.

(4) Number of crimps and degree of crimp The number of crimps and the degree of crimp are JIS L1015-7-12-
1 and the method of JIS L1015-7-12-2.

(5) Spinnability during spinning / drawing There were no problems such as yarn breakage during spinning / drawing, sticking, and stains on the spinneret.

(6) Comfortability as a futon The stuffed cotton fibers used in the present invention are carded with a roller card to laminate the web and stuffed in a polyester side cloth sewn with a polyester sewing thread to form a skin comforter. The pillow is made of commercially available cotton and is filled with commercially available normal polyester chips, and the temperature is 27 ° C x 70% RH.
In a controlled room, we wore cotton summer pajamas and actually went to sleep, and evaluated it on a scale of 7 from comfortable (⊚) to extremely damp (×).

Examples 1 to 4 and Comparative Examples 1 to 3 As polyether ester amide R1 component, 340 parts of ε-caprolactam, 18 parts of terephthalic acid, 100 parts of polyethylene glycol having a number average molecular weight of 1000, and further Irganox 1330. (Ciba Geigy) 0.1 part and trimethyl phosphate 0.01 part were charged into a polymerization reaction vessel, heated and stirred at 240 ° C. for 1 hour under a nitrogen stream, and then 0.1 part antimony trioxide was added and the mixture was heated. A polyetheresteramide block copolymer containing 45% by weight of N6 component was obtained by carrying out a polymerization reaction for 4 hours under conditions of 250 ° C. and 0.5 mmHg or less under a temperature and pressure reduction program. Relative viscosity η at 25 ° C. of this orthochlorophenol solution (concentration 0.5 g / 100 ml)
r was 2.05. The moisture absorption rate of the polymer alone is 1
It was 5.2%. Ordinary polyethylene terephthalate was used as the R1 and polyester R2, the spinning temperature was 280 ° C., the number of spinneret holes was 24, and the take-up speed was 1350 m.
/ Min., A concentric structure having R1 as a core and R2 as a sheath as shown in FIG. 1 was subjected to a usual asymmetric cooling treatment immediately below the spinneret, and an undrawn yarn of a stuffed cotton fiber was spun.

Next, the unstretched yarns are combined to obtain a tow denier of 100,000 denier after stretching, and a draw ratio of 3
Double, draw at a drawing bath temperature of 80 ° C, apply mechanical crimp with a crimper, add finishing oil, cut, set with a heat setter at 145 ° C, dried, and packed with a fineness of about 6 denier and a cut length of 64 mm. A cotton fiber was obtained.

The stuffed cotton fiber obtained was carded by applying it to a roller card, and a card web was laminated with a molding machine to make cotton.

On the other hand, as the futon side, anti-pill type polyester staple (fineness 2 denier, cut length 51)
mm), a plain weave fabric was woven and white-finished, and a sewing thread was a triple-strand yarn of high-strength type polyester filament yarn to form a futon side. A polyester non-woven fabric was used for the product type and the label for handling, and the stuffed cotton fiber was stuffed in the polyester side fabric to make a summer comforter.

Table 1 shows the properties of the stuffed cotton fiber obtained by changing only the composite ratio of the polyether ester amide R1 component and the ordinary polyethylene terephthalate R2 component, the spinnability at the time of spinning, and the stuffed cotton fiber packed in the polyester side fabric. The results of the comfort evaluation when the product was commercialized as a summer comforter and actually used.

[0049]

[Table 1] The stuffed cotton fibers of Examples 1 to 4 had a composite ratio of the polyether ester amide R1 component of 15 to 50% by weight, exhibited crimping due to asymmetric cooling, and had good spinnability during spinning. The moisture absorption rate of the stuffed cotton fibers was 2.2 to 7.7%, and the comfort feeling when used as a comforter was also good.

On the other hand, in Comparative Example 1, the polyether ester amide R1 component was not used and only the ordinary polyester was produced, and there was no problem in the spinnability during spinning, but the crimp was not sufficient and the futon When it was used as a comforter due to lack of bulge and low moisture absorption, it felt stuffy and was difficult to sleep. In Comparative Example 2, the composite ratio of the polyether ester amide R1 component was 14% by weight, crimps due to asymmetric cooling were relatively exhibited, and the spinnability during spinning was also good, but the moisture absorption rate was 1.9%. Due to its low moisture absorption, it felt stuffy when used as a comforter and was difficult to sleep. Further, in Comparative Example 3, the composite ratio of the polyether ester amide R1 component is 52% by weight.
Crimping due to asymmetric cooling is well expressed, and moisture absorption rate is 8%
The comfortability was good when used as a comforter, but yarn breakage during spinning and sticking between fibers were observed, resulting in poor spinnability.

As the futon side, anti-pill type polyester staple (fineness 2 denier, cut length 51)
(8 mm) using a woven fabric that has been woven and dyed and white-finished, and the sewing thread is triple fusible yarn of high-strength type polyester filament yarn, which is the futon side, 1.8 kg of cotton fibers were stuffed, and polyester nonwoven fabric was used for the type and handling label, and the stuffed cotton fibers were stuffed in the polyester side cloth to form a comforter. As a result of actually using this futon in a room with a winter atmosphere while wearing winter pajamas, although it is slightly less bulky than a commercially available comforter that uses conventional polyester wadding,
It was a futon with practically no problems.

10 sheets of each of the futons of Examples 1 to 4 were used for the summer quilt for 1.5 months and for winter for 6 months,
The side fabric was defibrated with a fluffing machine, the defibrated fibers were melted and pelletized, and melt-spun and stretched again to obtain polyester staple having a fineness of 3 denier and a cut length of 51 mm. The obtained staple was a polyester staple colored in gray, and although the strength was slightly lower than that of commercially available polyester staple, it was sufficiently usable as a polyester staple.

Example 5 The polyether ester amide R1 component obtained in Example 1 and the normal polyethylene terephthalate R2 component having a melting point of 255 ° C. were made into pellets, respectively, and blended with 40% by weight of R1 and 60% by weight of R2. Then, the spinning temperature was 280 ° C., the take-up speed was 1350 m / min, the hollow cross-section had a hollow ratio of 30%, and the ordinary asymmetric cooling treatment was performed directly below the spinneret to spin an undrawn yarn of blended cotton fiber.

Next, the undrawn yarn is drawn at a draw ratio of 3 times at a drawing bath temperature of 80 ° C., and a mechanical crimp is applied by a crimper.
After applying a finishing oil and cutting, set and dry with a heat setter at 145 ° C, fineness about 6 denier, cut length 6
4 mm stuffed cotton fibers were obtained. Furthermore, in the same manner as in Example 1 except that 50% by weight of commercially available ordinary polyester short fibers (asymmetric cooling three-dimensional crimp with a hollow section of 31% hollow ratio, fineness 6 denier, cut length 64 mm) was blended, summer use was performed. It was commercialized as a comforter for skin and evaluated for comfort when used as a comforter. The average moisture absorption rate of the whole stuffed cotton was 3.3%, and the comfort feeling when used as a comforter was also good.

Also, the futon of this Example 5 was used for 1.5 months, and the side fabrics were defibrated by a fluffing machine, and the defibrated fibers were melted and pelletized and melt-spun again in the same manner as in Example 5. -Stretched into a polyester staple having a fineness of 6 denier and a cut length of 61 mm. The obtained staple was a hollow staple which was colored gray and blended with the polyether ester amide R1 component and the polyester R2 component, and although it had a slightly low moisture absorption rate, it could be used as a polyester stuffed cotton fiber.

Example 6 The polyether ester amide R1 component obtained in Example 1 and ordinary polyethylene terephthalate having a melting point of 255 ° C. were each pelletized, and R
1 to 70% by weight, usually polyethylene terephthalate 3
Blended at 0% by weight and used in 1 of hollow cross section as in FIG. 3 to give a weight ratio of outer 2 / inner 2/1 25/25/50,
The spinning temperature was 280 ° C., the take-up speed was 1350 m / min, the hollow cross-section structure was 26%, and the ordinary asymmetric cooling treatment was performed directly below the spinneret to spin an undrawn yarn of the three-layer composite hollow stuffed cotton fiber.

Then, the undrawn yarn is drawn at a draw ratio of 3 times at a drawing bath temperature of 80 ° C., and mechanical crimping is applied by a crimper.
After applying a finishing oil and cutting, set and dry with a heat setter at 145 ° C, fineness about 7 denier, cut length 6
4 mm stuffed cotton fibers were obtained. Further, in the same manner as in Example 1, the product was commercialized as a summer comforter, and the comfort feeling when used as a comforter was evaluated. The average moisture absorption rate of the whole stuffed cotton was 5.5%, and the comfort feeling when used as a comforter was also good.

Further, the futon of this Example 6 was used for 1.5 months, and the side fabric was defibrated by a de-fluffing machine, the defibrated fibers were melted and pelletized, and melt spinning was performed again in the same manner as in Example 5. -Stretched into a polyester staple having a fineness of 6 denier and a cut length of 61 mm. The obtained staple was a gray staple and was a hollow staple obtained by blending polyetheresteramide R1 and polyester R2, and although it had a slightly low moisture absorption rate, it could be used as a polyester wadding fiber.

[0059]

EFFECT OF THE INVENTION According to the present invention, there is provided a polyester-based fiber quilt which has good spinnability in the production of stuffed cotton fibers, has excellent bulkiness as a quilt, has a comfortable feeling of use, and is easy to recycle. it can.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a model of an example of a fiber for wadding used in the present invention.

FIG. 2 is a schematic cross-sectional view schematically showing another example of the fiber for wadding used in the present invention as a model.

FIG. 3 is a schematic cross-sectional view schematically showing still another example of the fiber for wadding used in the present invention.

[Explanation of symbols]

 1: Polyether ester amide R1 component 2: Polyester R2 component

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display area D01F 8/14 D01F 8/14 Z

Claims (7)

[Claims] 1. A stuffed cotton of a futon contains a polyester fiber, and the polyester fiber is a composite of a polyetheresteramide R1 component and a polyester R2 component,
The polyether ester amide R1 component is mixed in an amount of 15 to 50% by weight, and is added in an atmosphere of 30 ° C. × 90% RH for 24 hours.
A polyester-based fiber blanket having a moisture absorption rate of 2% or more after standing for a while, and further, the side material and the sewing thread of the bedding are both substantially composed of polyester-based fibers. 2. A fiber constituting a stuffed cotton of a futon has a polyether ester amide R1 component as a core, and a polyester R
The polyester fiber blanket according to claim 1, which is a composite fiber having two components as a sheath portion. 3. The polyester fiber quilt according to claim 1, wherein the fibers constituting the stuffed cotton of the quilt are hollow fibers obtained by blending the polyether ester amide R1 component and the polyester R2 component. 4. The fibers constituting the stuffed cotton of the futon are hollow fibers composed of an outer layer made of a polyester R2 component and an intermediate layer made of a polyetheresteramide R1 component between the inner layer and the outer layer. Item 2. The polyester-based fiber blanket according to Item 1. 5. The fibers constituting the stuffed cotton of the futon have a fineness of 0.
The polyester-based fiber blanket according to any one of claims 1 to 4, which has a denier of 5 to 30 and a fiber length of 10 to 100 mm. 6. The fibers constituting the quilt of the futon are short fibers having three-dimensional crimps generated by asymmetric cooling, and have a crimp number of at least 3 peaks / 25 mm and a crimp degree of at least 5%. The polyester-based fiber quilt according to any one of claims 1 to 5, wherein 7. A stuffed cotton is a polyetheresteramide R1.
The polyester fiber quilt according to any one of claims 1 to 6, which is made of a mixed cotton of 30 to 70% by weight of the composite fiber of the polyester component and the polyester R2 component, and 70 to 30% by weight of the normal polyester fiber.