JPH09228159A - Stuffing fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide fibers for antibacterial stuffing having excellent use comfortableness by supplying a specific antibacterial component and a melamine compound to conjugate fibers staple constituted with a polyether esteramide and a polyester. SOLUTION: This staple fiber for stuffing capable of generating three- dimensional crimp and having crimp number and crimp degree of respectively at least 3 crimps/25mm and 5%, 0.5-30de fiber size, 10-100mm fiber length and >=2% moisture absorptivity after holding in an atmosphere of 30 deg.C×90% RH for 24hrs is obtained by spinning core-sheath type conjugate fibers constituting 15-50wt.% of polyether esteramide as a core part and 50-15wt.% of a polyester as a sheath part or hollow fibers blended with both components, or three-layered conjugated hollow fibers and asymmetrically cooling. The staples are dipped in an aqueous mixed solution of a monofunctional or bifunctional phosphate group-containing vinyl-based (co)polymer modified with amidine group, guanidine group or made to quaternary ammonium salt expressed by the formula (R1 is an 12-16C alkyl; R2 , R3 and R4 are each a 1-2C alkyl; Bu is butyl) and a melamine compound and heat-treated to impart an antibacterial property.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a comforter such as a comforter, a mattress, a skin comforter, and a cushion, and a filling fiber such as a pillow, a back cushion, a sleeping bag, and a jumper for cold weather. It is an object of the present invention to provide a fiber for stuffing which has hygroscopicity to the system fiber to improve the use comfort of these products for use and has antibacterial properties.

[0002]

2. Description of the Related Art Conventionally, polyester-based synthetic fibers for stuffing exhibit excellent bulkiness, are lightweight and have excellent heat retaining properties, and are therefore often used in the above-mentioned products for use. The polyester-based synthetic fiber stuffing fiber is made to have three-dimensional crimp by composite spinning or asymmetric cooling so as to have excellent bulkiness, or as described in Japanese Patent Publication No. 6-51076, for example. By combining a combination of forward-direction type three-dimensional crimped fiber and reversal type three-dimensional crimped fiber, it is possible to make it excellent in bulkiness under no load or under load, make the fiber a deformed cross section such as hollow, fineness of fiber, fiber length Alternatively, it is disclosed that the bulkiness and the texture are improved by optimizing the oil agent. Further, in order to obtain a soft texture by adding a silicone resin, for example, Japanese Patent Publication No. 52-28426, Japanese Utility Model Publication No. 53-5353, and Japanese Examined Patent Publication No. 4-3443.
There are inventions disclosed in Japanese Patent No. 5 and the like. However, since all of these polyester synthetic fiber battings have no hygroscopic property and tend to be stuffy, they are currently used as battings 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.

That is, a stuffing fiber made of hygroscopic polyester fiber which is comfortable to use and has high antibacterial properties with high washing durability has not been disclosed.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stuffing fiber having hygroscopicity, a comfortable feeling of use, and high antibacterial properties with high washing durability.

[0005]

The filling fiber of the present invention has the following constitution in order to solve the above problems.

That is, polyether ester amide R
A composite fiber comprising 15 to 50% by weight of one component and 50 to 15% by weight of a polyester R2 component, and having an antibacterial component and a melamine compound provided, and
A fiber for filling, which has a moisture absorption rate of 2% or more after being left for 24 hours in an atmosphere of 0 ° C. × 90% RH.

[0007]

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 filling fiber of the present invention is a composite of a polyetheresteramide R1 component and a polyester R2 component. This polyetheresteramide R1
The component has high hygroscopicity. 1, FIG. 2 and FIG. 3 are schematic cross-sectional views schematically showing an example of the filling fiber of the present invention. In FIG. 1, R1 and R2 are concentric core-sheath composite fibers, and FIG. 2 is R1. An elliptical hollow composite fiber in which R2 is blended, and FIG. 3 is an example showing a trilobal hollow composite fiber in which R1 and R2 are composited in three layers.

The polyether ester amide component R1 used in the fiber for filling of the present invention is a hygroscopic component and refers to 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.

Examples of the polyamide-forming component (a) of the polyether ester amide used in the present invention include lactams such as caprolactam, enantolactam, dodecanolactam, undecanolactam, aminocaproic acid, 11
-Ω such as aminoundecanoic acid and 12-aminododecanoic acid
-Aminocarboxylic acid, nylon 66, nylon 610,
Nylon salts of diamine-dicarboxylic which is a precursor such as nylon 612 can be used, and these can be used alone or in combination of two or more. Preferred polyamide-forming components are ε-caprolactam, 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.

Further, 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.
The range is up to 4000.

The polyether ester amide block copolymer used in the present invention is obtained by polycondensing the above-mentioned polyamide-forming component (a) and polyether ester-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 can be effectively used in the range of 20 to 10/90.

The thermoplastic polymer constituting the hygroscopic layer of each of the fibers for filling of the present invention may be composed of only the polyether ester amide as described above, but the manufacturing process of the fibers for filling is not limited. Polyetheresteramide R1 component and polyester R2 within the range of not impairing the spinnability in
It may be composed of a blend component with the component.

The polymer blend can be a state in which the individual polymers are mixed with each other to be homogeneous, or a state in which the individual polymers coexist without being completely mixed. In the present invention, the state of mutual polymers is not particularly limited, but from the viewpoint of moisture absorption efficiency, the polyether ester amide R1 component and the polyester R2 component are 1
It is preferable that the fibers of the book are present separately.

The polyester R2 component of the fiber for filling in the present invention is not particularly limited, but for example, terephthalic acid, 2,6-naphthalenedicarboxylic acid or their ester is the main dicarboxylic acid component, and ethylene glycol or tetramethylene glycol is the main component. Polyethylene terephthalate, polybutylene terephthalate, or polyethylene 2,6-
A linear polyester such as naphthalate 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, as the polyester R2 component when the polyether ester amide R1 component and the polyester R2 component are blended components as the thermoplastic polymer constituting the hygroscopic layer of each of the above-mentioned fibers for filling, ,
Modified polyethylene terephthalate obtained by copolymerizing a sulfonate compound is preferable because of its good compatibility with the polyether ester amide 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 0.1 to the acid component in consideration of the compatibility with the polyether ester amide R1 component and the physical properties of the obtained fiber for filling.
7 mol% is preferable, and 0.5 to 5 mol% is more preferable.
It is.

Further, part of the dicarboxylic acid component of the polyester R2 component is a dicarboxylic acid such as adipic acid or isophthalic acid and its ester derivative, ρ-oxybenzoic acid,
It may be replaced by an oxycarboxylic acid such as р-β-oxyethoxybenzoic acid and its ester derivative.

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 sodium polyacrylate, 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 pigments such as titanium oxide and carbon black, it is also preferable to add various antioxidants, anti-coloring agents, light-proofing agents, antistatic agents and the like to the stuffing fibers, if necessary. .

In the padding fiber of the present invention, the polyetheresteramide R1 component is the main moisture absorbing component,
The combined amount of the polyether ester amide component needs to 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. If it exceeds 50% by weight, the rigidity of the whole fiber will be reduced, and it will be apt to cause the robustness of crimping and the lack of resilience when compressed as a stuffing material. It is difficult to give sufficient three-dimensional crimp, it is difficult to obtain three-dimensional crimp sufficiently, and the polyetheresteramide component of the intermediate layer is likely to appear on the fiber surface, resulting in sticking between single fibers, resulting in spinning during the production of short fibers. Not only is the property worse, but there is also the problem that the cost increases due to the large amount of expensive ingredients.

The filling fiber of the present invention has a temperature of 30 ° C.
Moisture absorption rate after standing for 24 hours in 90% RH atmosphere is 2%
It is necessary to determine the composite amount of the polyether ester amide component and the fiber morphology as described above. 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 it is preferably as high as possible within a range that does not impair the spinnability at the time of producing the stuffed cotton fiber for comfortable use. According to the knowledge of the present inventors, the moisture absorption rate is preferably 20% or less from the viewpoint of not impairing the spinnability.

The stuffing fiber of the present invention is a composite of a polyether ester amide R1 component and a polymer of polyester R2 component. The polyether ester amide R1 component is a hygroscopic component and is generally easily deformed at low temperature. In terms of fiber structure, for example, as shown in FIG. 1 or 3, the polyether ester amide R1 component is polyester R
It is preferable that the structure is such that it is wrapped with a two-component polymer, and the spun fiber and the stability of the fiber structure during the production of the filling fiber are made good. In addition, in order to increase the bulkiness of the stuffing fiber by hollowing the fiber, or to perform three-dimensional crimping by performing an asymmetrical cooling treatment immediately below the mouthpiece when manufacturing the stuffing fiber, As shown in FIG. 2, polyether ester amide R1 component and polyester R
It is preferable that the fibers are hollowed by blending the two components, or that the structure in which the polyether ester amide R1 component is wrapped with the polyester R2 component polymer as shown in FIG. 3 is hollowed.

Furthermore, the fiber for filling has a fineness of 0.5-.
Short fibers having a denier of 30 and a fiber length of 10 to 100 mm are preferably used. If it is thinner than 0.5 denier, the bulk required as an aggregate may be low, and the resilience to compression and the bulk recovery may be low. 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 cotton breakage is likely to occur, and if it is longer than 100 mm, the fiber-opening property and the cotton-making property may be deteriorated. The crimp may be appropriately selected depending on the intended use, but in order to improve bulkiness, softness, resilience to compression and recovery, or cotton production, it is preferable to provide mechanical crimp, and the fiber for filling Asymmetric cooling process is applied at the time of spinning
It is more preferable that the book is three-dimensionally crimped by giving a structural difference. The number of crimps is 3 to 10 peaks / 25 mm, and the crimping degree is 5 to 30.
%.

The cross-sectional shape of the fiber for filling of the present invention is not limited to a round shape, but a modified cross-section such as a polygon or a hollowed shape thereof is more preferable.

Furthermore, the filling fiber of the present invention has antibacterial properties. From the viewpoint of antibacterial property, the antibacterial component is 0.0 with respect to the fiber.
It is preferable to adhere 5 to 3% owf. More preferably, it is 0.1 to 2% owf. Antibacterial component is 0.05%
If it is less than owf, the antibacterial performance may be insufficient.
On the other hand, if it exceeds 3% owf, the fiber becomes stiff, the recoverability against compression is lowered, and it becomes a problem in terms of cost, which is not preferable in practice.

Since the melamine-based compound forms a crosslinked network structure on the fiber surface, it is effective in improving washing durability, particularly industrial washing durability. The melamine compound is preferably attached to the fibers of the fiber B in an amount of 0.05 to 2% owf, more preferably 0.1 to 1.2% owf. 0.
If it is less than 05% owf, the industrial washing durability may be insufficient. On the other hand, if it exceeds 2% owf, the fiber becomes rigid, the recoverability against compression is reduced, and a cost problem arises, which is not preferable in practice.

Various compounds are used as the antibacterial component. For example, a compound having a basic group such as an amidine group or a guanidin group or a salt thereof such as a sodium salt, a potassium salt, or an ammonium salt, a quaternary ammonium salt, or the like can be used. Examples of the compound containing an amidine group include 4,4'-stilbene-dicarboxamidine-diisethionate (that is, stilbamine.
Isethionate), N '-(4-chloro-2-methyl-
Examples of compounds containing a guanidine group include phenyl) -N, N-dimethyl-methanimide (ie, chlordimeform), and 1,17-diguanidino-9-aza-heptadecane (ie, guazatin), p- (chlorophenyl). Diguanide) -hexane (that is, chlorhexidine), p-benzoquinone-amidino-hydrazone-thiosemicanevazone (that is, ambazone), and the like, and quaternary ammonium salts include benzalkonium chloride, benzethonium chloride, and the like. Each can be used. Of course, these compounds are examples, and it goes without saying that compounds other than the above can be used. Among the above compounds, p- (chlorophenyldiguanide) -hexane or a salt thereof is preferable because it has high safety and the antibacterial property does not decrease in the presence of proteins and the like.

The antibacterial component having such a basic functional group includes:
It is preferable to use it after reacting with an acidic group-containing polymer (which may be a homopolymer or a copolymer) which reacts with the polymer. As the acidic group-containing monomer constituting the acidic group-containing polymer, sulfone group, carboxyl group, phosphon group, each acidic group such as phenolic hydroxyl group, or a salt thereof such as sodium salt, potassium salt, ammonium salt The monomer which has can be used. Examples of the monomer having a sulfo group include styrene sulfonic acid, vinyl sulfonic acid, allyl sulfonic acid, sulfopropyl acrylate,
Sulfopropyl methacrylate, 3-chloro-4-vinylbenzenesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-acryloyloxybenzenesulfonic acid, 2-acryloyloxynaphthalene-2
-Sulfonic acid, 2-methacryloyloxynaphthalene-
Examples of monomers having a carboxyl group include 2-sulfonic acid and 2-hydroxy-3-methacryloyloxyfuropyl sulfonic acid, and acrylic acid, methacrylic acid, itaconic acid, crotonic acid, maleic acid, maleic anhydride, and 3
-Butene-1,2,3-tricarboxylic acid, 4-pentenoic acid and the like, as the phosphon group-containing monomer,
Allylphosphonic acid, acid phosphoxyethyl methacrylate, 3-chloro-2-acid phosphoxypropyl methacrylate, 1-methylvinylphosphonic acid, 1-
Phenylvinylphosphonic acid, 2-phenylvinylphosphonic acid, 2-methyl-2-phenylvinylphosphonic acid, 2
-(3-Chlorophenyl) vinylphosphonic acid, 2-diphenylvinylphosphonic acid and the like can be used, and as the monomer having a phenolic hydroxyl group, o-oxystyrene, o-vinylanisole and the like can be used.

These monomers may be used alone or in combination of two or more kinds. Further, other monomers copolymerizable with the monomer having an acidic group may be used in combination. Examples of such a monomer include acrylonitrile, acrylic acid ester, methacrylic acid ester, vinyl chloride, vinyl acetate, vinyl propionate, vinylidene chloride, ethylene, propylene, styrene and its derivatives, butadiene, acrylamide and its derivatives, hydroxyethyl. Acrylate, hydroxyethyl methacrylate, etc. can be used.

As the polymerization method, an emulsion polymerization method,
Any of ordinary polymerization methods such as a solution polymerization method and a bulk polymerization method can be adopted. Among them, the emulsion polymerization method is preferably used because a large amount of acidic groups tends to be distributed on the particle surface of the obtained polymer.

An antibacterial reaction product is obtained by reacting an acidic group-containing polymer obtained by polymerizing such a monomer with a basic group-containing antibacterial component.

Among the quaternary ammonium salts, the compound represented by the above formula [I] is particularly preferably used as a compound exhibiting a highly safe antibacterial / deodorant effect. In the formula [I], it is preferable that R ₁ is an alkyl group having 12 to 16 carbon atoms, which has 11 or less carbon atoms or 17 carbon atoms.
Above, the antibacterial property tends to be insufficient.

In the formula [I], R ₂ , R ₃ and R
It is preferable that ₄ is an alkyl group having 1 to 2 carbon atoms,
When the number of carbon atoms is 3 or more, the viscosity increases and the solubility in water tends to be low, which tends to be inconvenient in production.

As the anion used for neutralizing the quaternary ammonium salt, an alkyl phosphate ion is selected from the viewpoint of rust prevention. Further, as the alkyl group, a carbon number of 4, that is, a butyl group is preferably selected. As the butyl group, n-butyl group, iso-butyl group, t
Any of the ert-butyl groups is preferably used. The carbon number of the alkyl group is preferably 3 to 5 from the viewpoint of synthesis.

Further, when used in combination with a melamine compound,
Further, it is more preferable to use an antibacterial resin having an excellent antibacterial property, which can impart the antibacterial property to the fiber material safely and easily and which does not corrode the processing equipment.

In the present invention, the antibacterial resin is a vinyl polymer or copolymer having a quaternary ammonium chloride monovalent or divalent phosphate ester group represented by the following general formula [II] or [III]. It is also preferable to use a united product.

(II and III, R is a polymer main chain or an organic residue, R ₁ is an alkyl group having 8 to 18 carbon atoms, R ₂ is an alkyl group having 1 to 18 carbon atoms, a phenyl group or a substituted aryl group. Indicates)

Embedded image

Embedded image The vinyl polymer or copolymer having a quaternary ammonium chloride-phosphoric acid ester group represented by the above formula [II] or [III] has excellent antibacterial properties. In addition, since it is an amphoteric polymer substance, it can be firmly attached to synthetic fibers and natural fibers. For this reason, antibacterial properties excellent in durability and washing durability can be obtained.
Further, since it is obtained as an aqueous solution or a water-alcohol mixed solution, it has advantages that it can be easily used for a fiber material and that it does not corrode the device. next,
As the melamine compound used in the present invention, those represented by the following general formula [IV] can be used.

[0040]

Embedded image (Wherein, R _{0 to} R ₂ : —H, —OH, —C ₆ H ₅ , C _n
H _{2n + 1} (n: 1 to 10), -COOC _n H _{2n + 1} (n: 1
_{~20), - CONR 3 R 4} , -NR 3 R 4 (R 3, R
_{4: -H, -OH), -} OC n H 2n + 1, -CH 2 OC n
H _{2n + 1} , —CH ₂ COO _n H _{2n + 1} (n: 1 to 20), −
_{CH 2 OH, -CH 2 CH 2} OH, -CONH 2, -C
ONHCH ₂ OH, —O (X—O) _n R ₅ (X: —C _{2
H 4 -, - C 3 H} 6 -, - C 4 H 8 -, n: 1~150
0, R ₄ : —H, —CH ₃ , —C ₂ H ₅ , —C ₃ H ₇ ) Among the above-mentioned general formulas, preferred compounds are those in which R ₀ and R ₁ are —
NR ₃ R _{4 wherein} R ₂ is —C
Those which are ONR ₃ R ₄ and —NR ₃ R ₄ are more preferable. Further, R ₃ and R ₄ represent —CH ₂ OH, —CH ₂ CH
Compounds that are ₂ OH, —CONH ₂ , and —CONHCH ₂ OH are particularly preferred.

Needless to say, these compounds are only examples, and compounds and derivatives other than those mentioned above can be used.

A melamine compound having at least two polymerizable functional groups is suitable because it improves the durability of the resin coating formed on the fiber surface.

Thus, the antibacterial single component or the antibacterial reaction product obtained by reacting the antibacterial component with at least one of the acidic group-containing polymer and the copolymer as the antibacterial component and the melamine-based compound as the main film-forming component are used. The following antibacterial coating is formed on the surface of the fiber,
As a mechanism of action on the durability of the film, the melamine compound, which is the main component for forming the film, is polymerized or crosslinked in the fiber matrix polymer to form a two-dimensional or three-dimensional structure, and at the same time, a part of the functional group of the fiber matrix polymer is functional. It is considered that the durability of the film, which is chemically bonded to the base and insolubilized in a network and firmly fixed to the fiber, is remarkably improved, and excellent hot water washability and dry cleaning property can be exhibited.

As a typical example of the method for applying the antibacterial component and the main component for forming a film to the fiber, the fiber is padded or spray-treated in the same treatment bath in which a polymerization initiator or a crosslinking catalyst is added to an aqueous solution containing the component. After that, there is a method of performing a reaction treatment in a wet condition. The reaction can be carried out at room temperature or higher, but is usually steamed. The two components can be treated in separate baths. That is, first, the fibers are padded or spray-treated in a treatment bath containing an antibacterial component, then subjected to dry heat or steam heat treatment, and then in a separate treatment bath in which a polymerization initiator or a crosslinking catalyst is added to an aqueous solution containing main components for forming a film. Padding or spraying the fibers,
It can also be steamed.

The polymerization initiator is used when polymerizing an acrylic compound having an alkylene glycol unit. As a specific example, a common vinyl polymerization initiator such as ammonium persulfate, potassium persulfate, azobisisobutyronitrile, etc. may be used. Can be processed.

On the other hand, the catalyst is used when a melamine compound is subjected to a crosslinking reaction, and specific examples include various organic carboxylic acids such as formic acid and acetic acid and their organic salts such as ammonium, sodium and potassium, and sulfuric acid and peroxide. Inorganic salts such as ammonium, sodium, potassium, magnesium, zinc, aluminum and iron such as sulfuric acid, hydrochloric acid, phosphoric acid and nitric acid, and double salts thereof can be used. Of course, the compounds described above are not limited.

The steam heat treatment is preferably carried out at 80 to 140 ° C., more preferably 100 to 130 ° C. for 0.5 to 30 minutes. The dry heat treatment is preferably 80 to 150 ° C., more preferably 100 to 130 ° C., and then preferably 100 to 220 ° C., more preferably 140 to 1 ° C.
It is carried out at 90 ° C. for 0.5 to 5 minutes.

According to the method of the present invention, other chemicals such as a softening agent, a water repellent, a water absorbing agent, an antistatic agent, a hard finishing agent, etc. may be added to the treatment liquid used for padding or spraying treatment. Good.

[0049]

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 filling fiber of the present invention and 30 ° C. × 90
It was calculated from the following formula from the weight change after standing in a thermo-hygrostat under an atmosphere of% RH for 24 hours.

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 crimping The number of crimps and the degree of crimping 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 clogging of the spinneret, and a good spinnability (⊚) to a difficulty in spinning (x) were evaluated in 7 grades.

(6) Comfort as a quilt The stuffing fiber of the present invention is carded with a roller card to laminate and web the cotton, and the polyester lining is used as a skin quilt, and the quilt is made of commercially available cotton. However, the pillow is made of commercially available normal polyester chips, and I wear cotton summer pajamas in a room controlled at a temperature of 27 ° C x 70% RH to actually go to bed, and feel comfortable (◎).
It was rated from 7 to 7 (very bad).

(7) Antibacterial property Staphylococcus A
ureus ATTC6538p) broth suspension, poured into a carpet-shaped fiber opening and fiber web, and measured the viable cell count after culturing at 37 ° C. for 18 hours in a closed container, The number of bacteria was measured with respect to the number of bacteria, and the difference in increase / decrease value K = log (B / C) was obtained. However, the culture conditions of the bacteria must be log (B / A)> 2.
A is the number of bacteria which were dispersed and recovered immediately after the pouring, by pouring the above-mentioned bacteria into a web-like material of ordinary polyester cotton which was not subjected to antibacterial treatment. B is a normal polyester cotton web which is not antibacterial processed
The number of bacteria collected after dispersion for 8 hours is shown. C represents the number of bacteria that were dispersed and recovered after 18 hours of culture by pouring the above-mentioned bacteria into a web of fibers obtained by opening the stuffed cotton of the present invention. As for the antibacterial property after washing, using a drum dyeing machine, neutral detergent "Zab" (Kao Corporation, registered trademark) 2 g / l, hydrogen peroxide 3 cc / l, sodium peroxide 1.5 g / l, Temperature 8
It is washed for 15 minutes at 5 ± 2 ° C. and a bath ratio of 1:20, then drained, dehydrated, and washed with water for 10 minutes. After washing with water, it is dried for 20 minutes using a tumbler dryer. This is one wash. Regarding the antibacterial property, a K of 1.6 or higher was regarded as a passing level. The antibacterial property against MRSA was evaluated by the Japan Food Research Laboratories.

Examples 1 to 4 and Comparative Examples 1 to 3 As polyether ester amide R1, 340 parts of ε-caprolactam, 18 parts of terephthalic acid and a number average molecular weight of 10
100 parts of polyethylene glycol of No. 00, 0.1 part of Irganox 1330 (manufactured by Ciba Geigy) and 0.01 part of trimethyl phosphate were charged into a polymerization reaction vessel, and the mixture was heated and stirred at 240 ° C. for 1 hour under a nitrogen stream, and Add 0.1 part of antimony oxide, and under a temperature rising and depressurizing program, 250 ° C, 0.5 mmHg or less, 4
By carrying out the polymerization reaction for a time, the ratio of the N6 component becomes 4
A 5% by weight polyether ester amide block copolymer was obtained. The relative viscosity ηr at 25 ° C. of this orthochlorophenol solution (concentration 0.5 g / 100 ml) was 2.05. The moisture absorption rate of the polymer alone is 15.2
%Met. Using ordinary polyethylene terephthalate as the R1 and the polyester R2, a spinning temperature of 280
℃, take-up speed 1350m / min, core R1 as shown in Figure 1,
A non-stretched yarn of cotton fiber for filling was spun by forming a concentric structure having R2 as a sheath and performing a normal asymmetric cooling treatment directly below the spinneret. Next, the undrawn yarn is drawn at a draw ratio of 3 times and a drawing bath temperature of 80 ° C., and mechanical crimping is applied by a crimper,
It was dried at 145 ° C. to obtain a hygroscopic staple.

Furthermore, a 2.5% aqueous solution of an antibacterial agent containing 32% of an antibacterial resin made of a vinyl polymer having a quaternary ammonium chloride monovalent phosphate ester group was prepared. In addition, Sumitex which is a melamine compound
A 1% aqueous solution of M-3 (manufactured by Sumitomo Chemical Co., Ltd.), a 0.3% aqueous solution of Sumitex Acx (manufactured by Sumitomo Chemical Co., Ltd.) which is a cross-linking agent, and a 0.7% aqueous solution of a softening agent were prepared. After mixing and stirring these aqueous solutions, the ordinary polyester hollow fibers were dipped, squeezed and cured at 130 ° C. for 1 minute to obtain antibacterial fibers A. Obtained antibacterial fiber A
The amount of the attached antibacterial component was 0.52% owf, and the amount of the melamine compound attached was 0.65% owf. Table 1 shows the properties of the stuffing fiber obtained by changing only the composite ratio of the polyether ester amide R1 and the normal polyethylene terephthalate R2, the spinnability during spinning, the antibacterial property, and the stuffing fiber produced as a summer comforter. , Shows the results of comfort evaluation when actually used.

[0059]

[Table 1] Note) Characteristic value after 50 times of washing after antibacterial washing.

The filling fibers of Examples 1 to 4 have a composite ratio of polyetheresteramide R1 of 15 to 50% by weight,
Crimping due to asymmetric cooling was well expressed, and the spinnability during spinning was also good. In addition, the moisture absorption rate of only the filling fiber is 2.2.
〜7.8%, antibacterial property against Staphylococcus aureus is 4.2 to 4.3 before washing, 3.8 to 3.9 after washing, MRSA antibacterial property is 4.4 to before washing. At 4.5 and 3.3 to 3.4 after washing, both comfort and antibacterial properties when used as a comforter were good.

On the other hand, Comparative Example 1 was produced by using only ordinary polyester without using the polyetheresteramide R1, and has no problem in spinning properties during spinning / drawing and has good antibacterial properties. Since the crimps were not sufficient and lacked in bulkiness, and the moisture absorption rate was low, it felt stuffy when used as a comforter on the skin, and was difficult to sleep. In Comparative Example 2, the composite ratio of the polyether ester amide R1 is 13% by weight, the crimp due to asymmetric cooling is relatively expressed, and the spinnability and the antibacterial property at the time of spinning are good, but the moisture absorption rate is 1.9. Since the moisture absorption rate was low in%, 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 is 51% by weight, the crimp due to asymmetric cooling is well expressed, the moisture absorption rate is 8.1%, and the comfort and antibacterial property when used as a comforter are also good. However, yarn breakage during spinning and sticking between fibers were observed, and the spinnability was poor.

[Example 5] As a filler fiber having no antibacterial property, ordinary polyethylene terephthalate having a melting point of 255 ° C was pelletized, and the spinning temperature was 280 ° C.
The drawing speed was 1350 m / min, a circular hollow cross-section structure was used, and an undrawn yarn that had been asymmetrically cooled immediately below the spinneret was spun.
Next, this undrawn yarn is drawn at a draw ratio of 3 and a drawing bath temperature of 80.
After stretching at ℃, and crimping it with mechanical crimp, cut it to a cut length of 51 mm and heat-treat it at 145 ℃ to obtain a fineness of about 6
A denier fiber having a crimp number of 7.6 threads / 25 mm and a crimping degree of 27% was obtained. 50% by weight of this filling fiber and 50% by weight of the filling fiber obtained in Example 4 were mixed and evaluated for actual use in a skin comforter.

The average moisture absorption of the mixed cotton filling fiber was 4%, the antibacterial property was 2.2 before washing, and the antibacterial property was 2.9 after washing, and both comfort and antibacterial property when used as a comforter were good.

Example 6 The polyether ester amide R1 obtained in Example 1 and ordinary polyethylene terephthalate R2 having a melting point of 255 ° C. were each pelletized, and R
1 was 30% by weight and R2 was 70% by weight, the spinning temperature was 280 ° C., the take-up speed was 1350 m / min,
A stuffing fiber was produced in the same manner as in Example 1 except that a hollow cross-section structure having a hollowness of 30% was used, and ordinary asymmetric cooling treatment was performed just below the spinneret to spin an undrawn yarn of blended cotton fiber. The spinning during spinning and drawing was good.

As a result of evaluating the actual use of the stuffing fiber in a comforter, the number of crimps of the stuffing fiber was 8.1 ridges / 25.
mm, the crimping degree is 26%, the moisture absorption rate is 5.2%, the antibacterial property is 4.2 before washing and 3.4 after washing, and the comfort and the antibacterial property when used as a comforter are good. It was

Example 7 The polyether ester amide R1 obtained in Example 1 and ordinary polyethylene terephthalate R2 having a melting point of 255 ° C. were each pelletized, and R
1 to the hollow cross section 1 as shown in FIG. 3, and R2 to the outer 2 and inner 2
Used for the outer 2 / inner 2/1 weight ratio 35/35/3
0, a spinning temperature of 280 ° C., a take-up speed of 1350 m / min, a hollow cross-section structure of 28% hollow rate, and an ordinary asymmetric cooling treatment was performed directly below the spinneret to spin an undrawn yarn of a three-layer composite hollow composite fiber A. A filling fiber was produced in the same manner as in Example 1 except that The spinnability during spinning and drawing was good.

As a result of evaluating the actual use of the stuffing fiber in a comforter, the number of crimps of the stuffing fiber is 7.1 mountains / 25.
mm, the degree of crimping is 27.1%, the moisture absorption rate is 5.4%, the antibacterial property is 4.3 before washing and 3.4 after washing, and the comfort and antibacterial property when used as a comforter are good. It was

[0068]

EFFECTS OF THE INVENTION According to the present invention, the yarn-forming property of the fiber for filling is good, and it has a comfortable feeling when used as a filling.
Moreover, it is possible to obtain a stuffing fiber having antibacterial properties.

[Brief description of drawings]

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

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

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

[Explanation of symbols]

 1: Polyether ester amide R1 2: Polyester R2

Claims (10)

[Claims] 1. A polyether ester amide R1 component
5 to 50% by weight and polyester R2 component is 50 to 1
A composite fiber which is composed of 5% by weight and has an antibacterial component and a melamine compound added thereto and at 30 ° C. × 90.
A stuffing fiber having a moisture absorption rate of 2% or more after being left for 24 hours in an atmosphere of% RH. 2. The composite fiber is polyetheresteramide R.
The filling fiber according to claim 1, which is a composite fiber having one component as a core part and a polyester R2 component as a sheath part. 3. The composite fiber is polyetheresteramide R.
The filling fiber according to claim 1, which is a hollow fiber obtained by blending one component and a polyester R2 component. 4. The composite fiber is a three-layer composite hollow fiber in which an outer layer composed of a polyester R2 component and an inner layer composed of a polyether ester amide R1 component are composited between the outer layer and the inner layer. The fiber for filling described in. 5. The fineness of the composite fiber is 0.5 to 30 denier,
The fiber for stuffing according to any one of claims 1 to 4, wherein the fiber length is 10 to 100 mm. 6. Composite fibers produced by asymmetric cooling 3
Short fibers with dimensional crimp, at least 3 peaks / 25 mm
6. The filling fiber according to any one of claims 1 to 5, which has a number of crimps of at least 5 and a crimping degree of at least 5%. 7. The filling fiber according to any one of claims 1 to 6, wherein the antibacterial component has an amidine group or a guanidine group. 8. The filling fiber according to claim 1, wherein the antibacterial component is a quaternary ammonium salt. 9. The filling fiber according to claim 8, wherein the quaternary ammonium salt is represented by the general formula [I]. Embedded image (However, R ₁ is an alkyl group having 12 to 16 carbon atoms,
R ₂ , R ₃ and R ₄ represent an alkyl group having 1 to 2 carbon atoms, and Bu represents a butyl group. ) 10. An antibacterial component which is quaternary ammonium chloride
The filling fiber according to any one of claims 1 to 6, which is an antibacterial resin made of a vinyl polymer or a vinyl copolymer having a divalent or divalent phosphate ester group.