JPH09220147A - Duvet covers - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide bedding covers to give comfortable use feeling, by composing the bedding covers by cloth containing polyester based fiber with moisture absorptivity and antistatic properties and making the of the cloth be a specific value. SOLUTION: These bedding covers are composed of cloth mainly consisting of polyester based fiber, are excellent in moisture absorptivity and antistatic properties and give comfortable use feeling by making its moisture absorption and desorption parameter ▵MR be higher than 1%. If the moisture absorption and desorption parameter ▵MR is lower than 1%, moisture absorption and desorption are insufficient in using the bedding covers to result in that comfortable use feeling cannot be obtained. Friction electrification voltage of cloth composing the bedding covers is to be lower than or equal to 3kV. By making the friction electrification voltage to be 3kV, discomfort feeling by dust adhesion by static electricity and electric discharge can be avoided. Fiber containing a mixture of polyetherester acid and fiber composing resin is used as the polyester based fiber with those properties.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover and / or a side surface of a comforter such as a comforter, a mattress, and a skin comforter (hereinafter referred to as a comforter cover), and more specifically, shrinkage caused by dusting or washing with water. The present invention relates to a futon cover having hygroscopicity and antistatic property, which is excellent in use comfort, while making use of the characteristics of the polyester fiber which is difficult to be wrinkled.

[0002]

2. Description of the Related Art Conventionally, many covers such as quilts, mattresses, and quilts are made of natural fibers such as cotton. However, these duvet covers have a problem that they generate a lot of dust when they are used and tend to shrink or wrinkle when washed with water.

As a solution to the disadvantages of the duvet covers made of natural fibers, duvet covers made of synthetic fibers such as polyester fibers have been commercialized. However, since the futon covers made of synthetic fibers do not have hygroscopicity, they tend to get stuffy during use, and in addition, they are inferior in antistatic property, causing discomfort. Therefore, there has been a demand for early development of futon covers that solve the above problems while making the most of synthetic fibers, particularly polyester fibers, which are superior to natural fibers.

[0004]

DISCLOSURE OF THE INVENTION The object of the present invention is to provide an excellent and comfortable use due to its hygroscopicity and antistatic property while having the characteristics that the polyester fiber is resistant to dust generation, shrinkage after washing with water, and wrinkles are hard to enter. Duvet cover that can give a feeling,
It is to provide futon covers such as futon side land.

[0005]

The futon covers according to the present invention for solving the above problems are made of a fabric containing polyester fibers having hygroscopicity and antistatic property, and the moisture absorption / release parameter ΔMR of the fabric is 1%. The above is a feature.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Although the duvet covers of the present invention are made of a cloth mainly composed of polyester fibers, their moisture absorption / release parameter ΔMR is 1% or more, preferably 1.2%. By having the above characteristics, it is excellent in hygroscopicity and antistatic property, and gives a comfortable feeling of use. If the moisture absorption / release parameter ΔMR is less than 1%, the moisture absorption and the moisture release during use of the duvet cover will be insufficient, and the comfort desired by the present invention will not be obtained.

However, in the duvet covers of the present invention,
The upper limit of the moisture absorption / release parameter ΔMR that the cloth should have is preferably up to 30%. Here, the moisture absorption / release parameter ΔMR as used in the present invention means the moisture absorption rate MR _{2 of} the fabric constituting the duvet covers under the condition of 30 ° C. × 90% RH and the moisture absorption rate under the condition of 20 ° C. × 65% RH. Rate MR
_The value represented by the difference from ₁ (ΔMR (%) = MR ₂ −MR ₁ ).

[0008] That is, the moisture absorption / release parameter ΔMR means that when a person uses a duvet cover or a futon covered with a side cloth (futon covers), the duvet cover absorbs human sweat and further the duvet cover. It is a parameter indicating the comfort obtained by releasing it through the atmosphere to the outside, and the larger the value of this parameter ΔMR, the higher the moisture absorbing / releasing ability, and the better the comfort at bedtime.

The futon covers of the present invention preferably have a friction electrification voltage according to JIS L 1094B of the cloth constituting the futon covers of 3 kv or less. Duvet covers made of polyester fibers may generate dust during operation and may attach dust to the surrounding area, or may give a tingling sensation to the human body. By setting the frictional electrification voltage to 3 kv or less, substantially 0 kv, it is possible to prevent discomfort due to dust adhesion or discharge due to the static electricity.

The duvet covers of the present invention are made of a fabric containing polyester fibers having the above-mentioned moisture absorption / release parameter ΔMR and frictional electrification voltage. A preferable polyester fiber having such characteristics is poly A fiber containing a mixture of an ether ester amide (X) or a polyether ester amide (X) and a fiber molding resin is used, or a hydrophilic compound (A) is added to a polyester.
And a copolymerized polyester (Y) containing at least one of a polar group-containing compound (B) and a crosslinking agent (C).

These polyether ester amides (X)
And the copolyester (Y) are characterized by having hygroscopicity and antistatic property, and preferably, the polyetheresteramide (X) or the copolyester (Y) is used as one component, A core-sheath type, sea-island type, or laminated type composite fiber in which the forming polymer (Z) is compounded as another component, or the fiber forming polymer (Z) is polyetheresteramide (X) or copolymerized. It is preferable to use it as a blended fiber in which polyester (Y) is blended.

As the polyether ester amide (X), a block copolymer having an ether bond, an ester bond and an amide bond in the same molecular chain can be used. More specifically, one or two selected from lactam, aminocarboxylic acid, salts of diamine and dicarboxylic acid.
It is a block copolymer polymer obtained by polycondensation of one or more polyamide-forming component (a) and a polyetherester-forming component (b) consisting of dicarboxylic acid and poly (alkylene oxide) glycol.

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

On the other hand, the polyether ester component (b) constituting the soft segment of the polyether ester amide is composed of a dicarboxylic acid having 4 to 20 carbon atoms and poly (alkylene oxide) glycol. Examples of the dicarboxylic acids having 4 to 20 carbon atoms include succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, aliphatic dicarboxylic acids such as sebacic acid and dodecadic acid, terephthalic acid, isophthalic acid, and 2,6-naphthalenedicarboxylic acid. And alicyclic dicarboxylic acids such as 1,4-cyclohexanedicarboxylic acid.
Species or a mixture of two or more can be used. Preferred dicarboxylic acids are adipic acid, sebacic acid, dodecadic acid, terephthalic acid, isophthalic acid.

The poly (alkylene oxide) glycol may be 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 with propylene oxide or tetrahydrofuran, etc., with polyethylene glycol being particularly preferred. . The number average molecular weight of poly (alkylene oxide) glycol is 300 to 1000.
The range is 0, preferably 500 to 4000.

The polyether ester amide block copolymer used in the present invention can be 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. At this time, in order to obtain a polymer having a high degree of polymerization and little coloring, for example, antimony oxide, It is preferable to add titanic acid ester or the like as a polycondensation catalyst, and phosphoric acid, phosphoric acid ester or the like as a color preventing agent. The weight ratio of (a) and (b) in the polyether ester amide is 99/1 to 5/90, preferably 80/20 to 10
It can be effectively used in the range of / 90.

On the other hand, the hygroscopic and antistatic copolyester (Y) used in the present invention is obtained by copolymerizing the hydrophilic compound (A) and the polar group-containing compound (B).
And / or contains a crosslinking agent (C). Examples of the acid component of the copolyester (Y) include aromatic dicarboxylic acids such as terephthalic acid, isophthalic acid, naphthalene-2,6-dicarboxylic acid, and aliphatic dicarboxylic acids such as adipic acid and sebacic acid. Particularly preferred is terephthalic acid. Examples of glycol components include ethylene glycol, propylene glycol, tetramethylene glycol, diethylene glycol, neopentyl glycol and the like. Particularly preferred is ethylene glycol.

The hydrophilic compound (A) as a copolymerization component is copolymerized to impart hygroscopicity and antistatic property to the copolyester, and the polar group-containing compound (B) and / or the crosslinking agent (C) absorbs moisture. It is contained as an auxiliary component for further improving the properties and as a component for stabilizing the physical properties of the fiber. The copolymerization amount of the hydrophilic compound (A) in the copolymerized polyester is preferably 40 to 99% by weight from the viewpoint of hygroscopicity and spinnability. More preferably, it is 55 to 90% by weight.

Further, the moisture absorption / release parameter ΔMR showing the moisture absorption property of the copolyester is preferably as high as possible in order to enhance the hygroscopicity of the synthetic fiber using this, but it is preferably at least 12% or more. . It is more preferably at least 15%, particularly preferably at least 18%. The molecular weight of the hydrophilic compound (A) is 6 in terms of compatibility with polyester and dispersibility in polyester.
00 to 20000 is preferable, and 100 is more preferable.
0 to 10000, particularly preferably 2000 to 60
00.

The hydrophilic compound (A) is not particularly limited as long as it is a compound containing at least one ester-forming group, but typical compounds are polyoxyalkylene compounds, polyoxazolines, polyacrylamides and their derivatives. , Polysulfoethyl methacrylate, poly (meth) acrylic acid and salts thereof, polyhydroxyethyl (meth) acrylate, polyvinyl alcohol, and polyvinylpyrrolidone. Among them, polyoxyalkylene compounds are preferable.

Examples of the polyoxyalkylene compound include polyoxyethylene compounds, polyoxypropylene compounds and polyoxytetramethylene compounds. Among them, polyoxyethylene compounds are preferable, and polyethylene glycol is particularly preferable. Among the polyethylene glycols, polyethylene glycol containing a crystallization inhibitor factor component is preferable.

Here, the crystallization inhibitor component means an organic residue existing in the molecular chain or at the terminal and disturbing the symmetry of the repeating unit of polyethylene glycol. Crystallization suppression is defined as differential scanning calorimetry (DSC, heating condition 16 ° C /
Min) is lower than the melting point of polyethylene glycol having the same molecular weight. Specific compounds include the following general formula (I)

[0023]

Embedded image (Where X is -CR ₅ R _6- (R ₅ and R ₆ represent hydrogen or an alkyl group), -SO _2- , -O-,
—S—, —C (O) —, etc., and 10 ≦ n + m ≦ 450
Indicates an integer. ), And a compound obtained by adding ethylene oxide (EO) to bisphenol A, bisphenol S, or the like is particularly preferable.

Most of these compounds need to be copolymerized in the polyester, but some of them may exist in a state of being dispersed in the polymer. Further, the polar group-containing compound (B) contained in the copolyester
Is not particularly limited, but is represented by the following general formula (II) Y _i -R ₁ -X _n (II) (wherein R ₁ is an organic residue, X is an ester-forming group, and n is a positive number of 1 or more). , Y _i represents one or more polar groups selected from derivatives such as an amino group, a sulfonic acid group, a carboxyl group, a hydroxyl group, an amide group, and a phosphonic acid group (an integer of i ≧ 1). Compounds having polar groups are preferred.

The term "contained" as used herein means a state of being dispersed or copolymerized in polyester, and particularly preferably copolymerized. As the compound, a compound having a sulfonate group is particularly preferable. The inclusion of a polar group-containing compound not only further increases the moisture absorption rate of the polymer, but also has the effect that hydrogen bonds and ionic interactions occur in the polymer, and when it is made into fibers, changes in physical properties over time do not occur easily. .

The content of the polar group-containing compound (B) in the copolyester is preferably 0 to 50 mol%, more preferably 2 to 30 mol% with respect to the acid component constituting the whole polymer.
Mol%, particularly preferably 2 to 15 mol%.
The cross-linking agent (C) contained in the copolyester (Y) is not particularly limited as long as it is a compound that reacts with the polyester to form a cross-linked structure, but is generally the following general formula (III) (R ₃ O) _n R ₂ (COOR ₄ ) _m (III) (wherein R ₂ is an organic residue of 3 to 6, R ₃ is hydrogen or an acetyl group, R ₄ is hydrogen or an alkyl group, 3
A polyfunctional compound represented by ≦ m + n ≦ 6) can be used.

The term "containing" as used herein includes being dispersed in polyester, but preferably having a crosslinked structure by copolymerization. The compound is preferably a polyfunctional carboxylic acid such as trimellitic acid or pyromellitic acid, or a polyol such as glycerin, trimethylolpropane or pentaerythritol, with trimellitic acid being particularly preferred.

By containing the crosslinking agent (C), not only the hygroscopicity of the polymer is further enhanced, but also a crosslinked structure is formed in the polymer so that the physical properties of the fiber hardly change with time. . The proportion of the cross-linking agent (C) in the copolyester is preferably 0 to 30 mol%, more preferably 1 to 1 with respect to the acid component constituting the entire polymer.
It is 5 mol%, particularly preferably 2 to 10 mol%.

In the present invention, at least one of the polar group-containing compound (B) and the cross-linking agent (C) may be contained in the copolyester, but preferably the polar group-containing compound ( It is more preferable that both B) and the crosslinking agent (C) are contained. Further, in the copolyester, titanium oxide, pigments such as carbon black, surfactants such as alkylbenzene sulfonates, conventionally known antioxidants, anti-coloring agents, light stabilizers, etc., within the range not impairing the object of the present invention. Of course, an antistatic agent or the like may be added.

In the present invention, the other fiber-forming polymer (Z) to be used as a composite or a blend with the above-mentioned polyether ester amide (X) or copolyester (Y) is not particularly limited. Instead of polyester, polyolefin such as polyethylene and polypropylene, polyamide such as nylon 6 and nylon 66, and the like can be used.

Examples of the polyester include polyethylene terephthalate, polybutylene terephthalate, or terephthalic acid, 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. Polyethylene 2,6
-Linear polyesters such as naphthalate.
Among these, polyethylene terephthalate (usually polyester) is particularly preferable.

Among the hygroscopic polyester fibers used in the present invention, polysodium acrylate,
Moisture absorption of poly-N-vinylpyrrolidone, polyacrylic acid and its copolymers, polymethacrylic acid and its copolymers, polyvinyl alcohol and its copolymers, polyacrylamide and its copolymers, cross-linked polyethylene oxide-based polymers, etc. A general-purpose thermoplastic resin such as a water-absorbing substance or polyolefin or polyamide may be contained to such an extent that the object of the present invention is not impaired. In addition to pigments such as titanium oxide and carbon black, conventionally known antioxidants,
Of course, an anti-coloring agent, a light-proofing agent, an antistatic material, etc. may be added.

As described above, the hygroscopic and antistatic polyester fibers used in the present invention include the above-mentioned polyether ester amide (X), copolymerized polyester (Y) and fiber-forming polymer (Z). It is preferable to use it in the form of a composite fiber or a blended fiber. As the conjugate fiber, a core-sheath type composite fiber including a core portion 1 and a sheath portion 2 as shown in FIG. 1, and a core-sheath type composite hollow including a core portion 1, a sheath portion 2 and a hollow portion 3 as shown in FIG. Fiber, sea-island type composite fiber composed of island portion 1a and sea portion 2a as shown in FIG. 3, and bonded portion 1 as shown in FIG.
An example is a laminated composite fiber in which b and 2b are laminated.

Among the conjugate fibers of these forms, in the case of the core-sheath type composite fiber shown in FIG. 1 and the core-sheath type composite hollow fiber shown in FIG. 2, a polyether ester amide (X) or a copolyester (Y) is added to the core portion. ) Is arranged, and the fiber-forming polymer (Z) is arranged in the sheath portion. In this case, the composite ratio (% by weight) is preferably 5/95 to 90/10 in the case of the copolyester (Y). More preferably, 7 / 93-5
The ratio is preferably 0/50, and particularly preferably 10/90 to 30/70. Further, in the case of the polyether ester amide (X), it may be 15 to 50% by weight based on the total weight of the polymer. The lower limit of the composite ratio of the core is set for the purpose of imparting sufficient hygroscopicity, and the upper limit of the composite ratio is set from the viewpoint of preventing a decrease in spinnability.

In the case of the sea-island type composite fiber of FIG. 3 or the laminated type composite fiber of FIG. 4, the polyether ester amide (X) or the copolyester (Y) is arranged on one of the island portion or the laminated portion, It is preferable to arrange the fiber-forming polymer (Z) on the other side of the sea part or the bonded part. In the case of the copolyester (Y), the composite ratio in this case is preferably 5 to 90% by weight of one of the island portion and the bonded portion with respect to the total polymer. It is more preferably 7 to 50% by weight, and particularly preferably 10 to 30% by weight. In the case of the polyether ester amide (X), it is preferable that the amount is 15 to 50% by weight based on the total weight of the polymer. The lower limit of the composite ratio is set from the viewpoint of providing sufficient hygroscopicity, and the upper limit of the composite ratio is set from the viewpoint of preventing a decrease in spinnability.

In the case of blended fibers, the blending ratio to the fiber-forming polymer (Z) is preferably 5 to 80% by weight based on the total amount of polymer in the case of the copolyester (Y). . It is more preferably from 5 to 35% by weight, further preferably from 7 to 30% by weight. In the case of the polyether ester amide (X), the amount is 15 to 50% by weight based on the total polymer. The lower limit of the blending ratio is set from the point of giving sufficient hygroscopicity, and the upper limit of the blending ratio is set from the viewpoint of preventing a decrease in spinnability.

The composite fiber used in the present invention can be easily produced by a conventionally known composite spinning method. Further, the cross-sectional shape of the composite fiber is not limited to a circular shape, but can be various modified cross-sections such as triangular, flat, and multi-lobed. When the cloth constituting the duvet covers is a woven fabric, the single yarn fineness of the warp and the weft is preferably 0.1 to 10 denier. When it is less than 0.1 denier, when used as a duvet cover, the single fibers may be cut and cause dust generation, or the cut single fibers may be entangled with each other to cause pilling called pilling. . On the other hand, if it exceeds 10 denier,
The texture of the duvet cover may become stiff and the usability may deteriorate.

The total fineness of the warp and the weft is 30 to 3
00 denier is preferred. If it is less than 30 denier,
It has a low tear strength as duvet covers, making it difficult to maintain sufficient durability for use. If it exceeds 300 denier, the duvet covers may become too thick and the usability may deteriorate. The density of warp and weft in the cloth is preferably 50 to 200 yarns / inch. If it is less than 50 strands / inch, the tear strength is low, and it becomes difficult to maintain sufficient durability in use, and the function of preventing passage of dust or the like around the futon or the like may be deteriorated. Also, when the number exceeds 200 lines / inch,
The texture of the duvet cover may become stiff and the usability may deteriorate.

Fabrics that form the duvet covers include woven fabrics, knitted fabrics, non-woven fabrics, etc., but it is preferable to use a fabric made of 100% polyester fiber having hygroscopicity and antistatic property according to the present invention. It is preferable because it is excellent in morphological stability, wrinkle resistance and quick drying property against dry cleaning and dry cleaning. However, as long as it has antistatic properties and the moisture absorption / release parameter ΔMR is in the range of 1% or more, more preferably 1.2% or more, it is usually used in combination with synthetic fibers such as polyester yarn in terms of comfort. A woven fabric using mixed twisted yarns or a woven woven fabric with synthetic fibers such as polyester yarn can be used. Further, as long as it has an antistatic property and the moisture absorption / release parameter ΔMR is in the range of 1% or more, more preferably 1.2% or more, similarly, the shape stability, wrinkle resistance or quick drying property of the polyester fiber is obtained. It is also possible to make a woven fabric in which natural fibers such as cotton are twisted and woven together within a range that does not impair the above.

[0040]

EXAMPLES In the examples of the present invention described below, the methods for measuring various properties used for evaluation and the like are as follows. (1) Moisture Absorption / Desorption Parameter ΔMR Two sheets of duvet covers were cut into a width of 40 cm and a length of 40 cm to prepare two sheets, and the weight W ₀ after drying for 6 hours with a hot air dryer at 60 ° C. was measured. , Weight W ₁ and 30 ° C. after conditioning in a constant temperature and humidity machine of 20 ° C. × 65% RH for 24 hours
Weight W after conditioning for 24 hours with a thermo-hygrostat at 90% RH
₂ was measured respectively, and the moisture absorption rate MR _{1 at} 20 ° C. × 65% RH and the moisture absorption rate MR ₂ at 30 ° C. × 90% RH were calculated from the following equations.
Are calculated respectively.

MR ₁ = [(W ₁ −W ₀ ) / W ₀ ] × 100 MR ₂ = [(W ₂ −W ₀ ) / W ₀ ] × 100 Next, from the moisture absorption rates MR ₁ and MR ₂ described below, The moisture absorption / release parameter ΔMR is calculated by ΔMR (%) = [(W ₂ −W ₁ ) / W ₀ ] × 100 (2) Friction electrification voltage Measured according to the method specified in JIS L 1094 B method. (3) Single yarn fineness The total fineness was measured according to the method specified in JIS L1499-5.3, and was determined by dividing by the number of filaments constituting the filament yarn. (4) Total fineness Measured according to the method specified in JIS L1499-5.3. (5) Fabric Density It was measured according to the method specified in JIS L1079-5.5.

Examples 1 to 4 and Comparative Example 1 340 parts of ε-caprolactam, 18 parts of terephthalic acid, polyethylene glycol 100 having a number average molecular weight of 1000.
Parts, further 0.1 parts Irganox 1330 (manufactured by Ciba Geigy) and 0.01 parts of trimethyl phosphate.
Was charged into a polymerization reaction vessel together with the parts, and was put under a nitrogen stream for 240
After heating and stirring at ℃ for 1 hour, 0.1 part of antimony trioxide was added and heated under reduced pressure program at 250 ℃, 0.5 mm
By carrying out the polymerization reaction for 4 hours under the condition of Hg or less,
A polyether ester amide block copolymer (X) having a nylon 6 component ratio of 45% by weight was obtained.

The relative viscosity ηr at 25 ° C. of the orthochlorophenol solution (concentration: 0.5 g / 100 ml) of this polyetheresteramide block copolymer (X) was 2.05. In addition, 30 ° C. × 9
The moisture absorption rate MR ₂ at 0% RH was 15.2%. Then, the above-mentioned polyetheresteramide block copolymer (X) was used for the core portion and ordinary polyester (Z) was used for the sheath portion, and the composite ratio thereof was varied as shown in Table 1 to form five core-sheath types. The conjugate fiber is spun at a temperature of 280 ° C. and the number of spinneret holes is 1
Spinning was carried out with 44 holes and a take-up speed of 1000 m / min, and further drawing was carried out at a draw ratio of 3.4 times, whereby five types of round cross section conjugate fiber drawn yarn (a) of 150 denier and 144 filaments were produced.

Separately from this, the above polyether ester amide block copolymer (X) is used as the core part, and the normal polyester (Z) is used as the sheath part, and the compounding ratio thereof is varied as shown in Table 1, and the same as above. By spinning and drawing, 5 types of round cross section composite fiber stretched yarn (b) of 75 denier and 36 filaments were produced. Next, the above-mentioned composite fiber drawn yarn (a) is used as a weft yarn, and the composite fiber drawn yarn (b) is used as a warp yarn, which is woven into a plain weave structure in a combination for each composite ratio, dyed with a white fluorescent dye, and finished and warped. Five types of fabrics for duvet covers having a density of 128 fibers / inch and a weft density of 80 fibers / inch were manufactured. Each of these five kinds of fabrics was sewn with a sewing thread using polyester spun yarn to obtain a cover for a comforter (Examples 1, 2, 3, 4 and Comparative Example 1).

Table 1 shows the results of measuring the moisture absorption / release parameter ΔMR and the frictional electrification voltage for each of these five types of comforter covers. As shown in Table 1, the duvet covers of Examples 1 to 3 have a moisture absorption / release parameter ΔMR of 1.1 to 2.8% and a friction electrification voltage of 0.10.
Was 0.52 kv.

This quilt cover was attached to a commercially available comforter whose side was cotton and batting was polyester.
As a result of being used for a month, no dust was generated from the duvet cover itself, and dust generated from the duvet was retained by the duvet cover and was rarely released outside the duvet cover. In winter, there was no discharge of electricity due to static electricity and no adhesion of dust. From spring to early summer, there was little stuffiness due to sweating at bedtime, which was good.

Furthermore, when these duvet covers were subjected to normal washing in a domestic washing machine, dehydrated and then naturally dried, the drying speed was high and the occurrence of wrinkles due to washing was small. On the other hand, in the duvet cover of Comparative Example 1, the moisture absorption / release parameter ΔMR of the duvet cover was 0.0% and the friction electrification voltage was 4.90 kv.
Met. These were subjected to a sleep practical test in the same manner as in Examples 1 to 4. As a result, although there was no discharge due to static electricity or adhesion of dust, there was a feeling of stuffiness due to sweating at bedtime in early summer, and a feeling of sleepiness was felt. .

[0048]

[Table 1]

Examples 5-8, Comparative Example 2 194 parts of dimethyl terephthalic acid, ethylene glycol 1
35 parts, 26.6 parts of dimethyl 5-sodium sulfoisophthalate (SSIA), 7.5 parts of trimethyl trimellitate (TMTM) and 0.1 part of tetrabutyl titanate were added, and methanol was distilled off at 140 to 230 ° C. After the transesterification reaction, 0.08 parts of trimethyl phosphate and Irganox 1010 as an antioxidant were used.
(Manufactured by Ciba Geigy) 0.2 parts, 0.2 parts of silicone as a defoaming agent and 0.1 part of tetrabutyl titanate are added, and polymerization is carried out under reduced pressure of 1.0 mmHg at 250 ° C. for 4 hours to obtain hygroscopicity. And a copolyester (Y) as a component having antistatic property was produced.

The proportion of polyethylene glycol copolymerized with the copolymer polyester (Y) was 60% by weight. Also, this polyester copolymer is 30 ° C x 90%
The moisture absorption rate MR ₂ at RH was 29.5%. Then
Copolymerized polyester (Y) was used as the core, ordinary polyester (Z) was used as the sheath, and the composite ratios were varied as shown in Table 2 from the concentric core-sheath composite spinnerets that were separately melted.
The core-sheath type composite fibers were spun at a spinning temperature of 280 ° C., a spinneret hole number of 144 holes, a take-up speed of 1000 m / min, and drawn at a draw ratio of 3.4 to obtain 150 denier fibers and 144 filaments. A variety of round-section composite fiber drawn yarns (c) were produced.

Separately from this, the above-mentioned copolyester (Y) is used as the core part, and the normal polyester (Z) is used as the sheath part, and the composite ratio thereof is varied as shown in Table 2, and the spinning drawing is carried out in the same manner as described above. Thus, five types of round cross section composite fiber drawn yarn (d) of 50 denier and 48 filaments were manufactured. Next, the above-mentioned composite fiber drawn yarn (c) is used as a weft yarn, and the composite fiber drawn yarn (d) is used as a warp yarn, and is woven into a plain weave structure in each combination ratio, dyed with a blue dye, and finished.
A fabric for a futon side having a warp density of 141 fibers / inch and a weft density of 81 fibers / inch was produced. Each of these five kinds of fabrics was sewn with a sewing thread using polyester spun yarn to obtain a side material for skin comforter (Examples 5, 6, 7, 8 and Comparative Example 2).

As shown in Table 2, the futon side materials of Examples 5 to 8 had a moisture absorption / release parameter ΔMR of 1.1 to.
5.6%, frictional electrification voltage was 0.06 to 0.60 kv, and it showed excellent moisture absorption and desorption property and antistatic property. On the other hand, the futon side material of Comparative Example 2 had a moisture absorption / release parameter ΔMR of 0.0% and a friction electrification voltage of 5.31 kv, and was inferior in moisture absorption / release property and antistatic property.

[0053]

[Table 2]

Example 7 In the futon side cloth in Example 6, as the warp,
Normal polyester filament yarn (50 denier, 4
A futon side material having the same configuration as that of Example 6 was manufactured except that a processed yarn obtained by false twisting a (8 filament round cross-section yarn) with a single-stage heater false twisting machine was used. Moisture absorption and desorption parameter ΔMR of this futon side is 3.5%, friction electrification voltage is 0.08 kv
It was excellent in moisture absorption and desorption and antistatic property.

[0055]

As described above, the futon covers of the present invention are excellent in hygroscopicity and antistatic property while having dust resistance due to polyester fibers, shrinkage upon washing with water, and resistance to wrinkles. A comfortable feeling can be given.

[Brief description of drawings]

FIG. 1 is a model diagram showing a cross section of a core-sheath composite fiber used in the present invention.

FIG. 2 is a model diagram showing a cross section of a core-sheath hollow composite fiber used in the present invention.

FIG. 3 is a model diagram showing a cross section of a sea-island composite fiber used in the present invention.

FIG. 4 is a model diagram showing a cross section of a laminated conjugate fiber used in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Core part 2 Sheath part 1a Island part 2a Sea part 1b, 2b Lamination part 3 Hollow part

Claims (7)

[Claims] 1. A futon cover made of a cloth containing a polyester fiber having a hygroscopic property and an antistatic property and having a moisture absorption / release parameter ΔMR of 1% or more. 2. The duvet cover according to claim 1, wherein the polyester fiber having hygroscopicity and antistatic property is a fiber containing polyetheresteramide. 3. The duvet cover according to claim 2, wherein the polyester fiber having hygroscopicity and antistatic property is a composite fiber or a blended fiber in which a polyether ester amide and a fiber-forming polymer are composited. 4. The polyester fiber having hygroscopicity and antistatic property is a fiber containing a copolymerized polyester which is copolymerized with a hydrophilic compound and contains at least one of a polar group-containing compound and a crosslinking agent. Duvet covers according to 1. 5. The futon cover according to claim 4, wherein the polyester fiber having hygroscopicity and antistatic property is a composite fiber or a blended fiber in which the copolyester and the fiber-forming polymer are composited. 6. The duvet cover according to claim 1, wherein the cloth has a frictional electrification voltage of 3 kv or less according to JIS L 1094 B method. 7. The fabric is a woven fabric, the warp and weft constituting the woven fabric have a total fineness of 30 to 300 denier, a single yarn fineness of 0.1 to 10 denier, and a density of the warp and the weft of 50. ~ 200 lines / inch.
Duvet covers according to any one of 1.