JP2006097222A - Polyvinylidene chloride-based fiber having perfume and its product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a polyvinylidene chloride-based fiber enabling many perfumes to be selectively used, capable of gradually emitting aroma without the load of an external force, having high sustainability of the aroma, and exhibiting excellent aroma-manifesting properties after washing. <P>SOLUTION: The polyvinylidene chloride fiber is obtained by melt-spinning a polyvinylidene chloride resin composition containing 0.05-10 wt.% perfume. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a polyvinylidene chloride fiber having aromaticity and a product thereof.

Conventionally, as a method for imparting a fragrance to a fiber, a method of adsorbing or attaching a fragrance to a fiber product by spraying or the like has been used, but the product obtained in this way does not last a long time due to volatilization of the fragrance. In addition, there was a problem that the fragrance was easily removed by washing with water.
Therefore, various methods have been proposed to solve such problems. In Patent Document 1, a method of containing a microcapsule in which a fragrance is encapsulated in a fiber, in Patent Document 2, a method in which a microcapsule in which a fragrance is encapsulated on a fiber surface is fixed in a dispersed state by a binder resin, And the method etc. which contain and / or fix the microcapsule which included the fragrance | flavor or the fragrance | flavor on the surface are disclosed. However, when a microcapsule containing a fragrance as in Patent Document 1 is used, there is a drawback that it cannot be used for general purposes because it cannot emit a fragrance in applications where no external force is applied, such as a tapestry or a curtain. Further, the method of attaching a microcapsule encapsulating a fragrance to the fiber surface with a binder or the like as in Patent Document 2 has a drawback that the capsule may fall off during use or washing, or the texture may be hardened by the binder resin. It was. In Patent Document 3, there is a method of containing and fixing a fragrance or a fragrance-encapsulated microcapsule inside or on the surface of the fiber, but only a method of attaching the microcapsule to the surface is actually provided in practice. No specific conditions for satisfying the fragrance persistence are suggested.

On the other hand, Patent Documents 4 and 5 disclose a method in which a fragrance-containing thermoplastic polymer is used as a core portion and polyester is used as a core-sheath type composite fiber, which is a sheath portion, as a method of allowing a fiber to contain a fragrance. However, since the polymer in the core is an olefin, the spinning temperature is very high, and depending on the type of the fragrance, the fragrance used is limited to the fragrance having a boiling point of 250 ° C. or higher because it volatilizes or deteriorates during production. There was a problem of being.
Patent Document 6 discloses a method of attaching a fragrance or a microcapsule encapsulating a fragrance to a hollow portion of a hollow fiber, a binder, and a water repellent. However, this method requires a step of dissolving the core portion of the core-sheath type composite fiber in order to create a hollow fiber and a post-treatment for imparting a fragrance or the like to the hollow portion, which makes the process complicated and practical. There was a problem that the cost would rise.
In Patent Document 7, there is a scent by adding a scent to a fiber or a synthetic resin of a strap, or by spraying, but this also does not suggest a specific condition for satisfying the sustainability of the scent.

JP-A-2-154007 JP 2001-159081 A Japanese Utility Model Publication No.4-2976 JP-A-61-63716 Japanese Patent No. 2851446 JP-A-6-228880 JP 2003-46620 A

  The present invention can be used by selecting many kinds of fragrances, and can gradually emit fragrance without load of external force, has high fragrance sustainability, and excellent fragrance expression after washing. An object of the present invention is to provide a vinylidene fiber, a method for producing the same, and a product using the vinylidene chloride fiber.

As a result of intensive studies using various thermoplastic resins to achieve the above-mentioned problems, the inventors surprisingly found that the use of a polyvinylidene chloride resin as a fiber base material resulted in the emission of perfume during spinning. It has been found that a fiber having a fragrance with a small amount of fragrance and a long lasting fragrance can be obtained over time, and finally the present invention has been made.
That is, the present invention is as follows.
(1) A polyvinylidene chloride fiber containing 0.05 wt% to 10 wt% of a fragrance.
(2) The method for producing a polyvinylidene chloride fiber according to (1), wherein the polyvinylidene chloride resin composition containing 0.05 wt% to 10 wt% of a fragrance is melt-spun and produced.
(3) A strap for portable equipment comprising a braid knitted using the polyvinylidene chloride fiber according to (1) or (2).

The polyvinylidene chloride fiber of the present invention can select more fragrances than conventional fragrance fibers, and since there is less volatilization during spinning, the fibers contain a high concentration of fragrances, and the yield is good. The fragrance can be emitted gradually. In addition, it has high fragrance persistence and excellent fragrance expression after washing, and can be produced in the form of short fibers, multifilaments, and monofilaments, so the resulting fibers can be knitted into any textile product. .
In addition, the strap for portable equipment knitted with the polyvinylidene chloride fiber of the present invention in a braid has high fragrance sustainability, and the polyvinylidene chloride fiber does not absorb moisture. It is easy to dry even if it gets wet, and is suitable as a strap.

Hereinafter, the present invention will be specifically described.
Examples of the fragrance used in the present invention include natural fragrances, synthetic fragrances, liquids or powders or mixtures of compounds that generate fragrances, and natural fragrances include animal fragrance musk, ambergris, civet, castrum, etc. Plant flavors include plant essential oils that can be taken from plant flowers, leaves, pericarp, seeds, rhizomes, bark, and the like. Synthetic fragrances include blended fragrances made of α-pinene, limonene, geraniol, linalool, lavandulol, nerolidol and the like. Also, depending on the type of perfume, it is known to have repellent effects on animals and insects. To obtain the repellent effect, citrus perfumes for dogs and cats, and perfumes such as rose and geranium for insect control Can be selected and used. In order to increase the type of fragrance expression, an inorganic porous material containing the same or other fragrances may be used in combination. Further, in the present invention, since a spinning at a low temperature is possible as compared with other resin material fibers, a fragrance having a boiling point of 250 ° C. or lower can be used effectively.

In the present invention, by using a polyvinylidene chloride-based resin as a fiber material, volatilization of the contained fragrance can be appropriately controlled and a continuous fragrance performance can be expressed.
The polyvinylidene chloride resin used in the present invention is a copolymer of vinylidene chloride and at least one monomer component selected from the group consisting of vinyl chloride, methyl acrylate, methyl methacrylate, lauryl methacrylate, and vinyl acetate. A copolymer of vinylidene chloride and vinyl chloride is preferable because it is particularly excellent in spinning suitability and knitting workability. The ratio of vinylidene chloride is preferably in the range of 70 wt% to 99 wt%. When the ratio of vinylidene chloride is less than 70 wt%, the persistence of the fragrance is lowered with a decrease in gas barrier properties, and further, stretched yarns may occur during spinning. is there. When the ratio of vinylidene chloride is 99 wt% or more, the melting point becomes high, so that it is close to the decomposition point of the resin and melt spinning tends to be difficult. Furthermore, from the viewpoints of low temperature extrudability for reducing perfume volatilization during spinning and producing good perfume yield and aroma sustainability, a more preferred range of the vinylidene chloride ratio is 75 wt% to 95 wt%.

In the present invention, the content of the fragrance in the fiber is 0.05 wt% at the lower limit in terms of fragrance strength and sustainability, and the upper limit is 10 wt% from the stability during spinning. Furthermore, the range of content of a preferable fragrance | flavor is 0.1 wt%-5 wt%.
The fibers of the present invention may contain plasticizers, antioxidants, stabilizers, pigments, fluorescent pigments, phosphorescent pigments, photochromic materials, thermochromic pigments, pearl pigments, metal powders, waxes, water repellents, glosses as necessary. You may contain conventionally well-known various additives, such as a quencher, a crosslinking agent, a fungicide, and an antibacterial agent, in the range which does not have trouble.
In the present invention, a method for obtaining a polyvinylidene chloride-based resin composition containing a fragrance by mixing a fragrance and a polyvinylidene chloride-based resin is not particularly limited, and can be mixed using a known mixing facility. Examples of the mixing equipment include a V-type blender, a Henschel mixer, and a ribbon blender.

The spinning method in the present invention is melt spinning. In dry spinning, the fragrance is altered by the solvent when the polymer and the fragrance are dissolved in the solvent, or the dissolved fragrance is vaporized together when the solvent is vaporized. In addition, in the case of wet spinning, the perfume is dispersed in the spinning bath in addition to the alteration of the perfume by the solvent, and the yield of the perfume becomes very poor. The spinning temperature of melt spinning is preferably between 160 ° C. and 200 ° C. in view of stability during spinning.
The cross-sectional shape of the fiber is not only circular, but also elliptical, hollow, star-shaped, I-shaped, Y-shaped, etc. The purpose is to increase the surface area to increase the fragrance or increase the gloss of the fiber while producing the fragrance However, various cross-sectional shapes can be used.

Specific examples of suitable spinning of the fiber in the present invention include, for example, a resin mixture obtained by mixing a fragrance and a polyvinylidene chloride resin with a blender, melt-extruded, spun from a nozzle, and then rapidly cooled in a cold water tank or air. A fiber having a desired diameter can be obtained by stretching the fiber by about 1.1 to 5 times with a roller having a speed difference.
In the present invention, the braid uses a commercially available string making machine, and can produce a round string, a flat string, etc. with a string making machine for round punching, a string making machine for flat punching, etc. A braid is formed by a knitting method such as 24, 32, 40, 48, 64, etc.
For the braid configuration, only the polyvinylidene chloride fiber containing the fragrance may be used, polyester, nylon 6, nylon 66, silk, rayon, cupra, acetate, polyvinyl chloride, vinylon, acrylic, polyethylene, polypropylene. Further, it may be knitted with various fibers such as polyurethane.

Since the polyvinylidene chloride fiber of the present invention has high fragrance persistence and excellent fragrance expression after washing, clothing, tapestry, table cloth, towel, curtain, mat, toilet seat cover, toilet paper cover, Woven knitted fabrics such as braids and straps for portable devices and products using them, stuffed cotton for stuffed animals and aromatic bags, embroidery thread, appliques, non-woven fabrics, insole, screen curtains, scrubbers, filters, screen doors, mats, ropes, nets It can use suitably for uses, such as.
The portable device strap is intended to be suspended or decorated on a portable device such as a mobile phone, a small camera, a portable audio device, a portable game machine, or a key.
In addition, it is possible to give decoration to the strap by printing patterns and characters with pigments, etc., and wearing a character mascot or dirt wipe.

Hereinafter, the present invention will be described in detail based on examples. The evaluation method used in the present invention is as follows.
(1) Intensity of fragrance 10 g of sample was put into a stainless steel box, which is a 15 cm side cube with a 10 cm square olfactory hole, and 30 minutes later, the fragrance was sniffed and evaluated.
The intensity of the scent was evaluated according to the following 6 levels based on the sense of smell of three odor judgers.
0: Odorless 1: Smell that can be finally detected 2: Smell that can be sensed what it smells 3: Smell that can be easily detected 4: Strong smell 5: Strong smell The average value of the evaluation of three odor judgeers "
(2) Washing method Weigh 1 kg of the sample obtained in the example, put it in a laundry net, and use a household detergent attack (trade name) (weak alkaline detergent, manufactured by Kao Corporation) 25 g, fully automatic. Washing was performed with a washing water volume of 40 liters under the standard course conditions of a washing machine MW-3S (trade name) (manufactured by Mitsubishi Electric Corporation). After washing was finished, flat laying was performed in a place where it was not directly exposed to sunlight. The cycle from this washing to flat laying was defined as “one wash”.

[Example 1]
A vinylidene chloride-vinyl chloride copolymer resin comprising 83% by weight vinylidene chloride and 17% by weight vinyl chloride, 3% by weight of acetotributyl citrate as a plasticizer with respect to the copolymer resin, and epoxyhexahydrophthalic acid as a heat stabilizer A resin composition obtained by mixing 2 wt% of di-2-ethylhexyl with respect to the copolymer resin, rose fragrance (manufactured by Takasago International Corporation, ROSE TIC / C-03.843 (trade name)) is added to the resin composition. 1.0 wt% to the mixture, mixed with a V-type blender, the mixture is melt-spun at a temperature of 180 ° C. using a single-screw extruder (extrusion amount 25 kg / hr) with a screw diameter of 55 mmφ, After cooling in the cold water tank, it is stretched and stretched 4 times with a speed difference roller, and the multifilament is composed of 9 pieces of a single yarn having a circular cross section of 100 μm in diameter. It was obtained of the fiber. At this time, the fragrance | flavor content in a fiber was 0.84 wt%. Using the obtained fiber as a weft, a warp polyester 83dtex / 36f was used to prepare a plain woven fabric having a warp of 70 / inch, a weft of 35 / inch, and a basis weight of 210 g / m2. The fabric immediately after creation had a scent intensity of 4, and the scent intensity after storage for 1 year in a dark room that was temperature-controlled at 25 ° C. was 3.

[Comparative Example 1]
A multifilament fiber was obtained by performing melt spinning in the same manner as in Example 1 except that a polypropylene resin (manufactured by Sun Allomer Co., Ltd., Sun Allomer PM604M (trade name)) was used as the base resin and the spinning temperature was 230 ° C. At this time, the fragrance | flavor content in a fiber was 0.46 wt%. A plain woven fabric was made from the obtained fibers with the same structure as in Example 1. The basis weight at this time was 150 g / m 2. The fabric immediately after creation had a scent strength of 3, and the scent strength after storage for 1 year in a dark room temperature-controlled at 25 ° C. was 0.

[Examples 2 to 4]
A vinylidene chloride-vinyl chloride copolymer resin consisting of 85 wt% vinylidene chloride and 15 wt% vinyl chloride, acetotributyl citrate as a plasticizer, 2 wt% with respect to the copolymer resin, and epoxidized linseed oil as a heat stabilizer Each of the examples shown in Table 1 is a soap type fragrance (Takasago Fragrance Co., Ltd., SOAP TIC / D-01271 (trade name)) mixed with 2 wt% of the copolymer resin. Are mixed with a V-type blender according to the blending ratio of the resin composition to the resin composition, and each mixture is melt-spun at a temperature of 175 ° C. using a single-screw extruder having a screw diameter of 55 mmφ (extrusion amount 30 kg / hr). After rapidly cooling the yarn side with air, the yarn was stretched 1.1 times with a speed difference roller, and after 10 minutes of tension being applied, the crimp was developed. In ter yarn bundle (the toe) was cut to a length 51 mm, diameter of the circular cross section to obtain a 35μm staple fibers. The obtained staple fiber is opened with a roller card machine at a speed of 4 m / min, and thereafter, with a needle punch machine, the number of needles is 700, the number of times of driving is 150 times / min, and the basis weight is 1.0 m / min. A needle punched nonwoven fabric of 300 g / m 2 was prepared. About this obtained nonwoven fabric, the result of having measured the intensity | strength of the fragrance immediately after producing and after washing 5 times, and the result of measuring the intensity | strength of the fragrance after 100-day storage in the dark room temperature-controlled at 25 degreeC are shown. It is shown in 1.

[Comparative Example 2]
Needle punch in the same manner as in Example 2 except that 0.02 wt% of soap type fragrance (Takasago Fragrance Industry Co., Ltd., SOAP TIC / D-01271 (trade name)) is blended with respect to the resin composition. A nonwoven fabric was obtained. Table 1 shows the results of measuring the intensity of the fragrance immediately after the preparation and after washing 5 times, and the results of measuring the intensity of the fragrance after storage in the darkroom for 100 days.

[Comparative Example 3]
A needle punched nonwoven fabric was prepared in the same manner as in Example 2 except that no fragrance was blended, and 0.5 wt% soap-type fragrance (Takasago Fragrance Co., Ltd., SOAP TIC / D-01) was sprayed on the nonwoven fabric. .271 (trade name)). Table 1 shows the results of measuring the intensity of the scent immediately after spraying and after washing 5 times and the results of measuring the intensity of the scent after being stored at 100 ° C. for 100 days in a dark room.

[Example 5]
Two multifilaments obtained in Example 1 were twisted together, a braid was prepared with a round punching string making machine for 32 punches, and cut into 27 cm. Both ends of the cut braid were aligned and folded in half, and the ends were sewed together. A thin thread was tied to the stitched portion, and a plastic cap was attached to create a strap for a portable device. The braid part of the strap was immersed in water for 1 minute and left on the filter paper for 10 minutes in the shade. The touch that I touched was light. Moreover, the intensity | strength of the fragrance after 1-month storage was 3.

[Comparative Example 4]
A strap was made in the same manner as in Example 5 except that a braid was made with a 40-round round stringing machine using a 167 dtex / 50 f viscose rayon filament.
The fragrance | flavor of 1.0 wt% rose fragrance | flavor (Rose TIC / C-03.843 (brand name)) made from Takasago Fragrance Industry Co., Ltd. was sprayed with respect to the strap with a spray.
The braid part of the strap was immersed in water for 1 minute and left on the filter paper for 10 minutes in the shade. The touch felt was moist. Moreover, the intensity | strength of the fragrance after 1-month storage was 1.

  Since the polyvinylidene chloride fiber of the present invention has high fragrance persistence and excellent fragrance expression after washing, clothing, tapestry, table cloth, towel, curtain, mat, toilet seat cover, toilet paper cover, Woven knitted fabrics such as braids, straps for portable devices and products using them, stuffed cotton for stuffed animals and aromatic bags, embroidery thread, appliques, non-woven fabrics, insole, screen curtains, scrubbers, filters, screen doors, mats, ropes, nets It can use suitably for uses, such as.

Claims (3)

  A polyvinylidene chloride fiber containing 0.05 wt% to 10 wt% of a fragrance.   2. The method for producing a polyvinylidene chloride fiber according to claim 1, wherein the polyvinylidene chloride resin composition containing 0.05 wt% to 10 wt% of a fragrance is melt-spun and produced.   The strap for portable apparatuses which consists of a braid braided using the polyvinylidene chloride fiber of Claim 1 or 2.