JP2904943B2 - Filling with aroma - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling having a durable scent. More specifically, a filling material such as a mattress, a comforter, a pillow, a cushion, a stuffed animal, and the like, which is obtained by using a specific core-sheath type solid composite short fiber having a durable scent as a cotton wadding or a side fabric. , "Forest bathing" effect, "comfortable sleep" effect, "cooling" effect, "insect repellent"
The present invention relates to a novel filling that can provide effects and the like for a long period of time.

[0002]

2. Description of the Related Art Hinoki has long been used on pillars and floors of houses, and its scent has calmed people's hearts and provided a "forest bathing" effect while staying there. However, this fragrance substance was easily lost, and it was difficult to maintain this effect for a long time. Therefore, various methods have been proposed for applying the natural essential oil component substances scattered and drifting in the forest to indoor installation items such as bedclothes, interiors, and interior materials for homes to obtain a "forest bathing" effect while staying in the house. ing. For example, a method of adsorbing or adhering essential oils to the final fiber product by post-processing has been proposed, but the essential oils are easily dropped off by washing or washing, and the rate of reduction of the essential oils due to volatilization is high, so the fragrance persistence is poor. Was something.

Recently, Japanese Patent Application Laid-Open No. 61-201012 discloses a fiber in which several kinds of natural essential oils or essential oils obtained by mixing components separated therefrom are kneaded into the core of a hollow-core sheath type composite fiber. JP-A-62-85010 proposes a hollow multi-core sheath-type composite fiber.

[0004]

However, all of them have insufficient fragrance persistence, and when used as fillings, the fragrance effect cannot be expected for a long period of time, and further improvements are desired. In addition, since these fibers use an olefin-based polymer as one component and also have a hollow portion, when used as a filling, the hollow portion is crushed, deformed to have a flat cross section, and increased in bulk. There is a problem in using it for fillings which are easily set and to which a high compressive load is applied, such as mattresses, pillows, cushions, stuffed animals and the like.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a filling having a scent using a conjugate fiber which is extremely excellent in fragrance persistence as compared with a conventional fragrance conjugate fiber. Is to do.

[0006] Yet another object is to provide a filling that can enjoy a more natural "forest bathing" effect by using certain natural essential oils, and furthermore has a fragrance with improved settling resistance. In providing fillings.

[0007]

Means for Solving the Problems The inventors of the present invention have made intensive studies to achieve the above object, and as a result, essential oils were blended in a mixture of a modified olefin polymer having a polar group and an olefin polymer having no polar group. The core-in-sheath solid composite short fibers with polyester as the core and polyester as the sheath, contrary to the conventional expectation, are extremely effective in improving the fragrance persistence. It has been found that the use of specific natural essential oils provides a more natural "forest bathing" effect, and that the use of heat-bonding fibers can significantly improve the settling resistance. The invention has been reached.

That is, the present invention relates to [Claim 1] A core-in-sheath type solid composite having the following olefin polymer composition containing 0.1 to 5% by weight of an essential oil as a core and a polyester as a sheath. A filling having a fragrance characterized by containing 10% by weight or more of the short fiber (A).

Olefin polymer composition (excluding essential oils) (a) Olefin polymer having substantially no polar group consisting essentially of α-olefin: 98 to 50% by weight (b) Unsaturated carboxylic acid, unsaturated Modified olefin polymer obtained by copolymerizing 3 to 30% by weight of at least one selected from alcohol and their esters, acid anhydrides or amides: 2 to 50% by weight [Claim 2] 30% by weight or more of the essential oil is The scented filling according to claim 1, which is at least one kind of natural essential oil selected from hinoki oil, mint oil, eucalyptus oil, hiba oil and camphor oil.

[Claim 3] A core / sheath composite short fiber (A) having a core / sheath composite ratio (weight ratio) of 3/7 to 7/3, a fineness of 0.5 to 50 denier, and a fiber length of 30-100mm,
The scented filling according to claim 1 or 2, wherein the number of crimps is 6 to 30/25 mm.

[Claim 4] The core-sheath type solid composite short fiber (A) is at least 10% by weight and the heat-adhesive fiber (B) is at least 10% by weight.
The scented filling according to any one of claims 1 to 3, wherein a fiber filling material mixed by weight% or more is packed in the side fabric.

[Claim 5] The core-sheath type solid composite short fiber (A) is contained in the side fabric of the filling, and the content relative to the weight of the side fabric is 5% by weight or more.
A filling having a scent according to any one of the preceding claims.

[6] The filling having a scent according to any one of [1] to [5], wherein the side fabric of the filling has an air permeability of 20 cc / cm ² / sec or less. ".

First, the aroma component used in the present invention is:
Essential oils, especially natural essential oils such as hinoki oil, mint oil, eucalyptus oil, hiba oil, camphor oil, etc., are important for obtaining a more natural "forest bathing" effect. These essential oils are usually obtained by steam distillation from branches and leaves, rhizomes, bark, fruits, buds, resins and the like of plants, and contain terpenoids as a main component. This terpenoid is extremely hard to penetrate the polyester layer used for the sheath, and hardly volatilizes from the fiber surface. Moreover, as will be described in detail later, the modified olefin polymer having a polar group among the olefin polymers used for the core has a moderate affinity with the terpenoid and serves to retain an essential oil. Polyolefin without has low affinity and allows the passage of essential oil components moderately,
By blending both at a specific ratio, it is possible to extremely easily achieve the appropriate fragrance intensity and maintain the fragrance effect (forest bathing effect, etc.) for a long time. It is possible to maintain the fragrance over time.

In the present invention, the natural essential oil is mainly used as the aroma component as described above, but the components contained in these essential oils may be separated and purified, or the synthetic essential oil may be used. May be used. Above all, 30% by weight of at least one natural essential oil selected from cypress oil, peppermint oil, eucalyptus oil , hiba oil and camphor oil.
It is desirable to use the essential oils contained above in order to exhibit more natural “forest bathing” effect, “comfortable sleep” effect, “cooling” effect and the like.

The amount of the essential oil in the polymer constituting the core must be 0.1 to 5% by weight, preferably 0.5 to 2% by weight. If less than 0.1% by weight,
The volatilization of the essential oil component into the air is reduced, and an aroma effect such as a sufficient forest bathing effect cannot be obtained.
On the other hand, if it exceeds 5% by weight, the dissolution and dispersibility in the core polymer is lowered, so that the melt spinning cannot be performed stably, and the amount of the essential oil component volatilized in the air becomes too large to give an unpleasant feeling. Is not preferred.

In the present invention, the polymer constituting the core in which the essential oil is blended is 98 to 50% by weight, preferably 98 to 70% by weight of the olefin polymer (a) substantially consisting of an α-olefin. And a modified olefin polymer (b)
It is important that the mixture be 2 to 50% by weight, preferably 2 to 30% by weight. (A) The amount of the component is 98
When used in excess of the weight percentage, the dispersibility of the essential oil component in the polymer constituting the core deteriorates, and the spinnability decreases. Also,
Since the affinity between the essential oil component and the component (a) is low, the concentration of the essential oil in the component (b) increases, the diffusion rate of the essential oil component in the core polymer increases, and the persistence of the aroma effect decreases.
On the other hand, when the amount of the component (a) is less than 50% by weight, the essential oil has a relatively good affinity for the component (b). The medium diffusion rate decreases, and a sufficient aroma effect cannot be obtained.

Examples of the olefin polymer preferably consisting essentially of an α-olefin include α-olefins such as ethylene, propylene, butene-1 and hexene-1.
Examples thereof include olefin homopolymers and copolymers, and copolymers thereof with a small amount (usually 10 mol% or less) of a nonpolar third component. Here, the nonpolar third component is a copolymer component having no polar functional group such as an ester bond, a carboxyl group, and a hydroxyl group, and examples thereof include unsaturated hydrocarbons such as styrene and norbornadiene. You.

On the other hand, the modified olefin polymer referred to in the present invention is an olefin polymer having a polar group, such as an unsaturated carboxylic acid, an unsaturated alcohol, and a polar group such as an ester, an acid anhydride or an amide thereof. It is important that 3 to 30% by weight, preferably 5 to 20% by weight, of an α-olefin is copolymerized with at least one selected from polymerizable monomers having the following formula: When the copolymerization amount is less than 3% by weight, the affinity with the essential oil component is not improved, and the persistence of the aroma effect is not improved. When it exceeds 30% by weight, the affinity with the essential oil is not improved. The diffusion rate in the core polymer is reduced due to the improvement in the properties, and the aroma effect tends to be hardly developed. As the polymerizable monomer having such a polar group, for example, acrylic acid, methacrylic acid, maleic acid, fumaric acid and their lower alkyl esters or amides, maleic anhydride, vinyl acetate and the like are preferably used.

The essential oil used in the present invention has poor heat resistance and is easily evaporated or decomposed by heat. Therefore, it is desirable to use a polymer having a low melting point (softening point) for the core. The components are high-density polyethylene,
Polyethylene polymers such as medium-density polyethylene and low-density polyethylene, and ethylene-vinyl acetate copolymer are preferably used as the component (b).

On the other hand, the polymer constituting the sheath portion of the conjugate short fiber (A) must be a polymer in which the essential oil component hardly diffuses and permeates and can impart excellent mechanical performance to the fiber. Polymers are preferred. Among them, in order to use as a cotton wool, it is desirable to have excellent properties such as bulkiness and anti-settling property. A polyethylene terephthalate-based polymer or a polymer composed of at least 95 mol% of ethylene terephthalate or butylene terephthalate. Butylene terephthalate polymers are desirable.

The ratio of the polymer constituting the core and the sheath in the present invention is preferably such that the ratio of the core / sheath is 7/3 to 3/7 by weight. When the ratio of the core exceeds 70% by weight, it is difficult to form a core-sheath structure, and the core may be exposed, and the persistence of the fragrance effect may decrease. On the other hand, when the ratio of the core portion is less than 30% by weight, the occupied cross-sectional area of the core portion becomes small, the amount of the essential oil component volatilized in the air is reduced, and the aroma effect tends to be reduced.

In order to produce the core-sheath type solid conjugate short fiber (A) containing the essential oil as described above, a conventionally used apparatus for core-sheath type conjugate spinning can be used as it is, according to a conventional method. Melt spinning and stretching may be performed. At this time, the essential oil
After being attached to the surface of an olefin polymer chip having no polar group and / or a modified olefin polymer chip, it may be supplied to a composite melt spinning apparatus, or may be previously melt-blended into a modified olefin polymer. May be used. In particular, the latter method is preferable because the essential oil is well dispersed in the polymer constituting the core, and the melt spinnability and the durability of the aroma effect are improved.

In the present invention, since the modified polyolefin having good affinity for the essential oil component is used as described above, even the essential oil component having a relatively low boiling point does not vaporize and foam in the die block. Furthermore, since the sheath component is rapidly solidified after the fiber formation, there is also an effect that the evaporation of the essential oil component is suppressed.

The undrawn conjugate fiber thus obtained is subjected to crimping if necessary after drawing, and then cut into short fibers. In the present invention, this cut length is also important, and is desirably in the range of 30 to 100 mm, preferably 40 to 70 mm. When the fiber length is less than 30 mm, the amount of the essential oil contained in one short fiber becomes small, so that the sustainability of the forest bathing effect tends to decrease. On the other hand, when the short fiber length exceeds 100 mm, the card There is a tendency for the permeability to decrease and for the bulkiness to decrease when used as, for example, futon cotton.

In the present invention, from the viewpoint of bulkiness and resilience, the single fiber fineness of the conjugate short fiber (A) is 0.5 to 0.5.
If it is less than 0.5 denier, the feeling of the filling becomes softer, but the bulkiness and resilience are insufficient. On the other hand, 50 denier is used. When the ratio is more than 1, although it is preferable in terms of resilience, the bulkiness is insufficient.

The number of crimps of the conjugate short fiber (A) is from 6 to 30/25 from the viewpoints of card passing property, bulkiness and rebound.
mm, particularly preferably in the range of 8 to 18 pieces / 25 mm. If the number of crimps is less than 6, the cardability is reduced and the web breaks easily. On the other hand, when it exceeds 30, web spots and neps tend to occur.

In the present invention, if the core-sheath type solid conjugate short fibers (A) containing the essential oil described above are contained in an amount of 10% by weight or more, preferably 30% by weight or more based on the weight of the filling. Often, it is not necessary to particularly limit the content form. For example, the composite staple fiber (A) may be mixed with another fiber-filled cotton material as a cotton-filled material and packed in the side fabric.
Alternatively, a spun yarn and a non-filled side fabric may be blended with other fibers. When the content of the conjugate short fibers (A) containing the essential oil is less than 10% by weight, the aroma of the filling becomes insufficient and the object of the present invention is not achieved.

As other fiber-filled cotton materials, various synthetic fibers and natural fibers can be used, and are mixed with the essential oil-containing conjugate short fibers (A) in the carding step and the blowing step. At this time, when using cotton, wool, feathers and other natural fiber-filled cotton materials in combination, the moisture absorption of the filling is improved to improve comfort during use, and when ordinary polyester short fibers are used together. Improves the durability of the filling such as settling resistance. Among them, when the heat-adhesive fiber (B) is used in combination and heat-adhered after forming the web or after blow-molding, it is particularly preferable since a filling excellent in repellency and set resistance is obtained. Needless to say, two or more of the above-mentioned fiber filling materials may be used in combination.

If the combined amount of the heat-adhesive fiber (B) is too small, the above-mentioned effect is not exhibited, and if it is too large, the hand tends to be hard.
As described above, the content is preferably in the range of 10 to 50% by weight.

The heat-bondable fibers (B) preferably used include low-melting polymers having a melting point of 60 to 200 ° C., for example, polyolefins such as polyethylene and polypropylene;
Fibers having a (copolymerized) polyester, (copolymerized) polyamide, polyurethane or the like as a heat-adhesive component can be exemplified. Among them, those having a copolymerized polyester as a heat-adhesive component have high bulkiness, anti-settling property, Particularly preferred from the viewpoint of cost.

The heat-bondable fiber (B) may be composed of the low-melting polymer alone, but may be a composite fiber with a fiber-forming polymer having a melting point higher than that of the low-melting polymer by 20 ° C. or more. In particular, conjugate fibers with polyester are preferred from the viewpoint of bulkiness and settling resistance. At this time, the composite ratio of the low melting point polymer and the fiber-forming polymer is 80/20 to 20 /
80, especially 60/40 to 40 to improve the adhesive performance
/ 60 is desirable.

The fineness of the heat-adhesive fiber (B) is preferably in the range of 0.5 to 50 denier as in the case of the conjugate short fiber (A), from the viewpoint of bulkiness and adhesive strength, Is preferably in the range of 30 to 100 mm from the viewpoint of card properties and adhesive strength.

The bonding conditions when the heat-bondable fibers are used in combination are not particularly limited. For example, after a web is formed, it is heated for 10 seconds to 20 minutes by a hot air circulation type heat treatment machine at a temperature of 100 to 240 ° C. Heat treatment may be performed.

In the present invention, as described above, the conjugate short fibers (A) containing the essential oil may be contained in the side fabric of the filling. In this case, if the side fabric uses a blended yarn of the composite staple fiber (A) and cotton, wool or ordinary polyester staple fiber, a woven or knitted fabric, a pile fabric,
Any form of cloth such as a flocking cloth can be used, but the content of the conjugate short fibers (A) in the side fabric is preferably 5% by weight or more in order to improve the fragrance effect. If the content of the conjugate short fibers (A) with respect to the total weight of the filling is 10% by weight or more, only those containing no essential oil components such as ordinary polyester fibers and cotton are used as the fiber filling material (filling). Then, the composite short fiber (A) may be contained only in the side fabric. When used as clothing such as quilting wear, the above-described procedure is particularly preferable because the fragrance effect becomes clearer.

In the present invention, when filling the above-mentioned fiber-filled cotton material into the side fabric, the cotton-filled material may be shaped into a web and then loaded, or may be blown after being opened. Further, the constituent fibers and the webs having the same or different constituent ratios may be laminated in two or more layers, or a lump or sheet-like filler such as urethane foam or rubber is covered or laminated with the above-described web. May be packed. That is, since any method adopted when manufacturing a normal filling product can be adopted, the hardness, cushioning property, drape property, and settling resistance of the finally obtained filling are appropriately adjusted. It can be set.

For example, when the weaving density of the side fabric is increased to reduce the ventilation rate, particularly when the woven fabric density is 20 cc / cm ² / sec or less, the air containing the essential oil component from the inside of the filling to the outside becomes difficult to move during storage. Staple fiber containing essential oil (A)
It is presumed that air containing a high concentration of essential oil components is extruded from the eyes of the side fabric by applying pressure to the filling during use, while the aroma effect is reduced. It is possible to extend the period during which the user can enjoy the service, which is preferable.

The air permeability of the cloth is a value measured according to the method described below. Using a commercially available Frazier-type tester described in the Textile Handbook of the Society of Textiles of Japan (Test and Inspection Division: Physical Property Test), select an appropriate air hole and "grab" a test piece of about 15 cm x about 15 cm or more. ”. The suction pump is adjusted by the rheostat so that the inclinometer indicates 0.5 (at this time, if the vertical barometer does not rise at all, the air hole is reduced by one step to N
o. In the case of excessive rise, on the other hand, the next larger No. Replace with air vent. ), And read the pressure indicated by the vertical barometer at that time. From the pressure value and the type of air hole, an air charge V (cc / cm ² / sec) passing through the test piece was determined from a ventilation rate calculation table attached to the tester and expressed as an average value of five sheets.

When the filling of the present invention is stored in a warehouse or displayed at a store, if it is placed at the same time as another product that produces a scent, the scent of the two may be mixed, resulting in an unpleasant odor. Poor air permeability, for example, 0.2μ thick
It is preferable to seal with a single-layer or multi-layer film consisting of polyester or polyamide, polyolefin, various vinyl polymers, cellulose acetate or the like alone or in a mixture of m or more. By doing so, in addition to the prevention of the leakage of the scent, there is also obtained an advantage that the loss of the scent release can be suppressed and the period during which the scent effect can be enjoyed can be extended. Furthermore, by packing the filling of the present invention in a vacuum, space saving during transportation and storage in a warehouse becomes possible, and at the same time, loss of fragrance release can be completely eliminated.

[0040]

The present invention will be described in more detail with reference to the following examples. In addition, since it is difficult to measure the forest bathing effect, the evaluation of the fragrance was performed according to the following. 1. Evaluation of fragrance The filling was stored in a state where it was exposed to the outside air, and the fragrance intensity was evaluated every predetermined time. In addition, the tow of Example 1 which was not cut after production was stored and cut at the time of evaluation.
It was rated on a scale.

When there is almost no difference from the standard: 5 When there is no smell at all: 1 The bulk measurement method and specific volume were measured according to JIS-L-1097. 3. Relaxation rate bulky difference when allowed to stand for 3 months with repeated ten product and H ₁ mm, when the initial bulky difference was H ₀ mm, sag factor _{= (H 0 -H 1) /} H 0 × 100 (%). 4. The anti-mite property is 30 futons at high temperature and humidity in summer.
The reproduction state of mites in a range of cm × 30 cm was observed with a microscope.

[0042]

Example 1 A core-sheath type solid composite short fiber (A) was produced as follows. Ethylene / vinyl acetate copolymer containing 20% by weight of hinoki cypress extracted essential oil (copolymer weight ratio 84: 1)
6) A chip blend of 5 parts by weight and 95 parts by weight of high density polyethylene having a melt index of 20 was added to 250 parts by weight.
And melted at 280 ° C. and supplied to a core-sheath type composite spinning apparatus so that polyethylene terephthalate having an intrinsic viscosity of 0.64 was melted at 280 ° C. and placed in a sheath.
Extruded from a circular base having 0 holes, 800 m /
And the undrawn fiber was obtained at a speed of 1 minute. Core /
The sheath ratio was 50/50.

The obtained unstretched fiber was bundled to 4 million denier, stretched 3 times at 70 ° C. in warm water, crimped with a crimper, and then subjected to a relaxation heat treatment at 120 ° C. for 30 minutes to obtain a fiber length of 51 mm. Cut into pieces. The fineness of the obtained short fibers was 6 deniers, and the number of crimps was 10/25 mm.

A normal polyester fiber (C) was produced as follows. Polyethylene terephthalate having an intrinsic viscosity of 0.64 is melted at 280 ° C., spun, stretched and cut according to a conventional method, and has a fineness of 6 deniers and a number of crimps of 10/2.
A short fiber (C) having a hollow section of 5 mm and a fiber length of 51 mm was obtained.

The core-sheath type solid composite short fiber (A) and the polyester fiber (C) are blended at a blending ratio of 50/50 (weight ratio), laid on a card to form a web, and then made of a spun cotton yarn. Taffeta having a ventilation rate of 35 cc / cm ² / sec was used as a side fabric, and a quilt weighing 1800 g was used as a filling. When I tested this thing in a 6 tatami mat bedroom, the whole room had a moderate scent of forest, no discomfort, a good night's sleep at bedtime, and when I woke up in the morning, it was refreshing,
I felt refreshed and had a calming effect. In addition, breeding of mites was not recognized even in the hot and humid summer.

Even when the futon was dry-cleaned, the intensity of the scent hardly decreased. After 2 years, the intensity of the fragrance did not change much, and the fragrance had long-lasting properties. The results are shown in Table 1.

[0047]

Examples 2 to 13 and Comparative Examples 1 to 8 Regarding the core-sheath type solid composite short fiber (A), the mixture ratio of the essential oil extracted from hinoki cypress, the type and mixing ratio of the copolymer used for the core, and the copolymer used for the sheath The type of polymer, core / sheath ratio, fiber cross-sectional shape, fiber length, and number of crimps were changed, and the core-sheath type solid composite short fiber (A), polyester fiber (C), and heat-adhesive fiber (B ) And a mixture of natural fibers of wool or cotton, as shown in Tables 1 and 2, except that the comforter was obtained in the same manner as in Example 1. The evaluation results are shown in Tables 1 and 2.

[0048]

Examples 14 to 19 Regarding the core-sheath type solid composite short fiber (A), a quilt was obtained in the same manner as in Example 1 except that the type of essential oil and the type of polar polyolefin were changed as shown in Table 3. Was. The evaluation results are shown in Table 3.

[0049]

Example 20 Polyester fiber (C) shown in Example 1
Cushion material (40 × 40 cm, thickness 3 cm, basis weight 3) impregnated with 50% by weight of foamed polyurethane by wet solvent method
50 g / m ² ) was coated with 500 g of a carded web having a core / sheath type solid composite short fiber (A) / polyester fiber (C) mixture ratio = 50/50 shown in Example 1 and a side lining was formed on the outside thereof. To make a cushion (45 x 45 cm).

When a wear test was conducted in a Japanese-style room of 6 tatami mats, the whole room had a moderate forest scent, was free from discomfort, was refreshing, was refreshing, and was calm. No mite breeding was observed during hot summer months.

Even when the cushion was dry-cleaned, the intensity of the scent and the fragrance were hardly reduced. Even after two years had passed, the intensity of the fragrance did not change much, and the fragrance had long-lasting properties. After 2 years, the bulk set was relatively small and good.

[0052]

Example 21 The sheath component of the core-sheath type solid composite short fiber (A) shown in Example 1 was co-polymerized with 4.5 mol% of 5-sodium sulfoisophthalic acid with respect to the total acid component. None, the composite staple fiber and the polyacrylonitrile fiber (denier 3 denier, fiber length 51 mm) were in a weight ratio of 60:40.
, And the mixture was set on a carding machine to prepare a sliver of 100 gels. This sliver was knitted by a sliver knitting machine manufactured by Wildman, USA.
At this time, as the back yarn, the fineness of the core-sheath type solid composite short fiber (A) shown in Example 1 was 1.5 denier, and the number of crimps was 13 /
A spun yarn having a cotton count of 15 obtained by mixing and spinning cotton having a fiber length of 25 mm and a fiber length of 51 mm in a usual spinning process at a weight ratio of 60:40. After the obtained napping cloth is cleaved and back coated, the pile is about 2 cm.
After shearing, the hair was adjusted and the hair was dyed light brown. Using the obtained napping cloth as a side lining and the polyester fiber (C) obtained in Example 1 as a batting, a stuffed toy of a dog in a prone figure was created. The total weight of this stuffed animal is 300 g, and the core-sheath type solid composite short fiber (A)
Accounted for 20%.

When this stuffed animal was placed on a desk in a 4.5 tatami room for children and tested, it was found that the child smelled of moderate forest during learning, had no discomfort and felt refreshed. .

Even after the stuffed animal was dry-cleaned, the intensity of the fragrance did not change much and the stuffed animal had cleaning resistance.

[0055]

Example 22 The mixing ratio A / C of the core-sheath type solid composite short fiber (A) and the polyester fiber (C) shown in Example 1 was 30.
1800 g of the web after the carding of / 70, the fineness of the core-sheath type solid composite short fiber (A) shown in Example 1 was 1.5 denier,
The number of crimps is 13 / 25mm, the fiber length is changed to 38mm, and cotton is mixed and spun at a ratio of 60/40 in a normal spinning process to form a spun yarn of cotton count 45, and further into taffeta fabric. The woven fabric was covered as a side fabric to prepare a comforter.

When the futon was tested for wearing in a 6-tatami room, good results were obtained as in Example 1. Further, the intensity of the fragrance after two years had passed was also at a favorable level, and the durability was excellent.

[0057]

Example 23 In Example 22, the side material having a core / sheath type solid composite short fiber (A) / cotton blend ratio = 60/40 was calendered, the mesh of the side material was crushed small, and the air permeability was 8 cc / cm. ² /
A quilt was prepared in the same manner as in Example 22 except that the side lands had relatively poor air permeability of sec, and the fragrance was evaluated. Compared with Example 22, the fragrance persistence was slightly improved.

[0058]

[Table 1]

[0059]

[Table 2]

[0060]

[Table 3]

[0061]

[Table 4]

[0062]

[Table 5]

[0063]

As described above, the filling of the present invention contains a specific core-sheath type solid conjugate short fiber, which has no hollow portion, and Modified olefin polymer with relatively good affinity for essential oil component as core polymer (acts as storage location for essential oil component)
And an olefin polymer composed of an α-olefin having no polar group and having good diffusibility of the essential oil component (which serves as a permeation and volatilization passage for the essential oil component). It is estimated that the effect can be obtained.

Further, the filling of the present invention can improve the hygroscopicity and comfort by blending natural fibers in addition to the core-sheath type solid composite short fibers, and furthermore, the heat-adhesive fibers can be used. By heat bonding after blending, it is possible to improve the repellency and the settling resistance of the filling.

Therefore, the filling of the present invention can be used for futons, pillows,
When used as sleeping bags, cushions, stuffed animals, etc., or in the fields of clothing such as winter clothing, ski wear, bedding, interiors, vehicle interiors, furniture, household goods etc. be able to. In addition, by using various other fiber materials together, it is possible to improve properties such as moisture absorption and comfort, as well as repulsion and settling resistance, achieving unprecedented combined effects It is done.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI D01F 6/46 D01F 6/46 A 6/52 6/52 8/04 8/04 Z 8/06 8/06 8/12 8 / 12 Z 8/14 8/14 Z D06M 13/00 D06M 13/00 // D04H 3/14 D04H 3/14 A D06M 101: 16 101: 32 (56) References JP-A-3-76815 (JP, A) JP-A-1-37987 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B68G 1/00-11/06

Claims (6)

(57) [Claims] 1. A core-sheath type solid composite short fiber (A) having a core portion of the following olefin polymer composition containing 0.1 to 5% by weight of an essential oil and a polyester sheath portion of 10% by weight or more. A filling having a scent characterized by containing. Olefin polymer composition (excluding essential oil) (a) Olefin polymer having substantially no α-olefin and having a polar group: 98 to 50% by weight (b) Unsaturated carboxylic acid, unsaturated alcohol and these Modified olefin polymer obtained by copolymerizing 3 to 30% by weight of at least one selected from esters, acid anhydrides and amides: 2 to 50% by weight 2. A scented filling according to claim 1, wherein at least 30% by weight of the essential oil is at least one natural essential oil selected from cypress oil, mint oil, eucalyptus oil, hiba oil and camphor oil. 3. A core / sheath composite short fiber (A) having a core / sheath composite ratio (weight ratio) of 3/7 to 7/3 and a fineness of 0.5 to 50.
Denier, fiber length 30-100mm, crimp number 6-30
3. A filling having a scent according to claim 1 or 2 which is 25 / mm. 4. A fiber filling material comprising 10% by weight or more of a core-sheath type solid composite short fiber (A) and 10% by weight or more of a heat-adhesive fiber (B) mixed in a side fabric. Item 4. A filling having a scent according to any one of Items 1 to 3. 5. The core-sheath type solid composite short fiber (A) is contained in the side fabric of the filling, and the content relative to the weight of the side fabric is 5% by weight or more. A filling having a scent according to the item. 6. The air permeability of the side cloth of the filling is 20 cc / cm ^2.
The filling having a scent according to any one of claims 1 to 5, which is not more than / sec.