JPH04100901A - Aromatic stockings and its manufacture - Google Patents

Abstract

PURPOSE:To obtain the subject stockings excellent in lasting properties and durability by dipping stockings in a treating solution composed of melamine resin-based microcapsules enclosing a perfume and a specific binder, then dehydrating the stockings and drying the dehydrated stockings at a prescribed temperature. CONSTITUTION:For example, stockings are dipped in a treating solution composed of, e.g. melamine resin-based microcapsules (having preferably 0. 1-20mum, particle diameter) enclosing a perfume such as castorium or citral and an acrylic acid ester/methacrylic acid acid/butadiene copolymer latex binder at ambient temperature, then centrifugally dehydrated and dried at 80-100 deg.C to afford the objective stockings. Furthermore, the weight ratio of the aforementioned capsules to the binder is preferably (1/1) to (1/3) and the pickup of the perfume-containing microcapsules is preferably 0.5-2wt.% based on the weight of the dried stockings.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to aromatic stockings and a method for manufacturing the same.

[Prior Art] Various methods have been used to impart fragrance to textile products.

For example, Japanese Patent Application Laid-Open No. 119000/1989 describes a method of mixing a fragrance and an acrylic adhesive and applying the mixture to an adhesive interlining. A method of brushing together with the agent is described in JP-A-48-36483.

Furthermore, a method of applying microcapsules containing a fragrance and a gum arabic thickening agent to textiles by dipping was disclosed in Japanese Patent Application Laid-Open No. 49-1919.
Publication No. 7 describes a method for printing carboxymethyl cellulose-based microcapsules containing fragrances,
No. 440 discloses a method in which fragrance is adsorbed on polyamide resin and silica gel and applied to fibers using a vinyl binder, and JP-A-53-52561 discloses a method in which fragrance-containing microcapsules are printed onto towel fabric using an acrylic resin. It is described in Japanese Patent Application Laid-Open No. 58-4886.

However, when stockings are processed using these conventional techniques, there are problems such as the stitches becoming clogged, the texture becoming stiff, and the stretchability being reduced.

In addition, a method of applying microcapsules containing fragrance to stockings together with a silicone binder has been disclosed in Japanese Patent Laid-Open No. 1-1-2.
01501 discloses a method using formalin-based microcapsules containing fragrance and a silicone-based binder, as disclosed in Japanese Patent Application Laid-Open No. 1999-1.
Although it is described in Japanese Patent No. 292183, there are problems with variations in the exhaustability of flavored capsules and their slipperiness when worn.

[Problems to be Solved by the Invention] An object of the present invention is to provide aromatic stockings that have a long-lasting fragrance, have a soft texture, and are non-slip.

[Means for Solving the Problems] In order to achieve the above object, the aromatic stockings of the present invention have the following configuration. That is, the fragrance stockings are characterized in that microcapsules having walls made of melamine resin and containing a fragrance are bonded together with a binder made of acrylic acid ester/methacrylic acid/butadiene copolymer latex.

Moreover, the method for manufacturing aromatic stockings of the present invention has the following configuration. That is, the stockings are immersed at room temperature in a treatment solution consisting of melamine resin microcapsules containing a fragrance and an acrylic acid ester/methacrylic acid/butadiene copolymer latex binder, followed by centrifugal dehydration and drying at 80 to 100°C. This is a method for producing aromatic stockings characterized by the following.

Stockings as used in the present invention include those that reach below the knees, those that extend above the knees, and so-called pantyhose in which a panty portion and a stocking portion are integrated. Furthermore, the material of the stockings may be synthetic fibers, natural fibers, or a mixture of these.

As the fragrance substance used in the present invention, natural fragrances and synthetic fragrances that are insoluble or sparingly soluble in water can be used in any combination. Contains animal fragrances such as beaver incense, trumpet incense, mandarin incense, and cat fragrance; plant fragrances such as citral, jasmine, lemon, pinene, peppermint, citrus, lavender, safrole, and chamomile; or aromas similar to these. Any synthetic fragrance can be used.

The wall material of the microcapsule used in the present invention is preferably an organic microcapsule, and examples thereof include polystyrene, ethyl cellulose, polyamide, polyacrylic acid, melamine, and silicone resin.

The particle size of the organic microcapsules is preferably 0.1 to 50 μm, more preferably 0.0 μm from the viewpoint of film strength, aggregation, and product quality.
．． Examples include microporous inorganic particles having a particle size of 1 to 20 μm, or organic particles made of melamine resin, acrylic resin, etc. having hollow micropores having a particle size of 0.1 to 20 μm. Among these, melamine resin particles are preferable wall materials because they are excellent in film strength, chemical resistance, adhesiveness, and transparency.

The binder used in the present invention has film-forming properties at low temperatures,
It is necessary to simultaneously satisfy all of the functions of solution stability, workability, washing resistance, compatibility between fragrance and microcapsules, product texture, and anti-slip properties when worn.

When acrylic ester is used alone, there are problems such as poor adhesion and hardness of the resin, and depending on the type of acrylic ester, it becomes sticky, which is undesirable, and when a crosslinking agent is used in combination, there is a problem that the texture becomes hard. In order to solve these problems, impart elasticity, and improve the dispersibility of fine particles, the terpolymer latex of acrylic acid ester, methacrylic acid, and butadiene is used.

Vinyl acetate-based, silicon-based, acrylic ester-based, polyurethane-based, melamine-based, and polyamide-based binders are generally used as binders for fibers, but these binders cannot satisfy all of the above functions. . That is, vinyl acetate-based and melamine-based materials lack durability and have problems with texture. Silicone-based shoes have the problem of being slippery when worn, while polyurethane-based and polyamide-based products lack durability.

The method for producing aromatic stockings of the present invention includes supporting the fragrance in microcapsules, mixing and dispersing the microcapsules in the binder resin liquid to obtain a treatment liquid, immersing the stockings in this, dehydrating, and drying the fragrance. It is produced by bonding microcapsules carrying the following with a binder.

In this case, it is desirable to attach and bond the fragrance-containing microcapsules to the single fibers of the stockings or to the surface of the threads, without closing the stitches, and to maintain them so that stretchability, breathability, and texture are not impaired. . Therefore, it is best not to set the binder viscosity too high; as the viscosity increases, clogging occurs and the texture tends to become harder.
Low viscosity is also desirable from the viewpoint of uniformity of adhesion. Low viscosity can be achieved by adjusting the proportions of microcapsules and binder used.

The type of fragrance may be selected according to preference. The fragrance intensity should be above a certain level, and the fragrance and sustainability should be excellent.
From the viewpoint of preventing the scent from being too strong and causing discomfort or discoloring the stockings, the adhesion rate of the fragrance-containing microcapsules should be 0.0% of the weight of the dry stockings.
5 to 2 wt% is preferable.

In addition, from the viewpoint of ensuring excellent retention of the fragrance capsules and ensuring sufficient durability, while also preventing the resin from becoming lumpy and degrading the texture and quality, the binder is 1 to 3 times the amount of microcapsules. It is preferable to set it as a range.

The temperature at which the stockings are immersed in the treatment liquid is room temperature. In the present invention, room temperature is 15 to 40°C.
temperature. If the dipping temperature exceeds 40° C., there is a problem that the binder resin is selectively adsorbed to the stockings, and the amount of fragrance-containing microcapsules adsorbed is relatively reduced.

On the other hand, if the immersion temperature is less than 15° C., a cooling operation is required, which impairs workability.

After the stockings are immersed in the processing solution, they are centrifugally dehydrated to efficiently remove excess processing solution. Vacuum dehydration and mangle dehydration are methods for removing the processing liquid, but these methods have problems such as the stockings being easily damaged and the processing speed being slow.

The adhesion rate of the treatment liquid after dehydration is preferably 25 to 35%. This is due to the uniform adhesion of the resin liquid, drying efficiency, and productivity. If the adhesion rate is less than 25%, the drying efficiency is good, but the aroma intensity is weak, the resin film formation is impaired, and the fragrance microcapsules are damaged. Losses tend to increase. On the other hand, when the adhesion rate exceeds 35%, drying efficiency tends to decrease and uneven adhesion occurs, resulting in variations in product quality.

The drying temperature is 80 to 100°C.

If the drying temperature is less than 80°C, productivity will be extremely reduced, while if it exceeds 100°C, it will be difficult to form a uniform film and there is also a risk that the fragrance will scatter from the microcapsules.

In the aromatic stockings of the present invention obtained by such a manufacturing method, the resin can form a film and form a film on the fiber surface in a form that encloses the microcapsules.As a result, the fragranced microcapsules are prevented from falling off and are easily washed. Durability is improved, hardening of the resin is suppressed, and a soft texture can be achieved.

As shown in FIGS. 1 and 2, in the aromatic stockings of the present invention, the state of adhesion of microcapsules does not change before and after washing, and the stockings have excellent washing durability.

[Example] Hereinafter, it will be explained in detail along with examples.

The test method used in the examples is as follows.

Aroma intensity = 6-step aroma intensity measurement method. That is,
Evaluations were made by five testers using the following six levels, and the average score was displayed.

0: No odor 1: Barely perceivable odor 2: Weak odor that makes it clear what the odor is 3: Easily detectable odor 4: Slightly strong odor 5: Strong odor Laundry test method: According to JIS L 0215 No. 105.

Wear rating: The texture when worn and the quality of anti-slip properties were judged.

(Example 1) Pantyhose knitted with double covered yarn made of nylon 6 (15d-5fi l) and polyurethane elastic thread were dyed by a conventional method, then immersed in the following prescription solution for 5 minutes, and then dyed in a centrifugal dehydrator. Adhesion rate of resin liquid to 30
%, then dried at 90°C, and then dried at 110°C.
Aromatic stockings were obtained by steam setting for 5 seconds.

In the following formulation, NK-binder 5R-G is a binder made of acrylic ester/methacrylic acid/butadiene copolymer latex.

Formula: Fragrance microcapsules 2% by weight (jasmine fragrance encapsulated in melamine resin microcapsules) NK-Binder 5R-G (manufactured by Shin Nakamura Chemical Co., Ltd.) 5% by weight Water 93% by weight Liquid temperature: 20°C The evaluation results are shown in Table 1.

(Example 2) Aromatic stockings were obtained by processing under the same conditions as in Example 1, except that the fragrance microcapsule concentration was 5% by weight. The evaluation results of the stockings are also shown in Table 1.

(Comparative Example 1) Particle size 0°1-11 containing 80% jasmine fragrance
2% by weight of μ spherical porous silica (S-012W manufactured by Suzuki Yushi Kogyo Co., Ltd.) and 65% by weight of NK binder SR were adsorbed and processed in the same manner as in Example 1 to obtain aromatic stockings.

The evaluation results of the stockings are also shown in Table 1.

(Comparative Examples 2 and 3) Binter was used as a low-temperature film-forming silicone (manufactured by Takamatsu Yushi Co., Ltd.: KT).
-7014) or melamine resin (Sumitex Resin M-3, manufactured by Sumitomo Chemical Co., Ltd.) in an amount of 5% by weight, the process was carried out in the same manner as in Example 1 to obtain aromatic stockings.

The evaluation results of the stockings are also shown in Table 1.

As in Example 1.2, very durable scented stockings were obtained.

[Effects of the Invention] The present invention has made it possible to provide aromatic stockings that have a long-lasting fragrance, are durable, soft, and do not slip.

[Brief explanation of the drawing]

Figure 1 shows the fiber shape with microcapsules attached (
Fig. 2 is an electron micrograph showing the shape of the same fiber after 5 washes.

Claims (3)

[Claims] (1) Fragranced stockings characterized in that microcapsules with walls made of melamine resin and containing a fragrance are bonded together with a binder made of acrylic acid ester/methacrylic acid/butadiene copolymer latex. (2) The weight ratio of the microcapsules containing the fragrance and the binder made of acrylic acid ester/methacrylic acid/butadiene copolymer latex is 1:1 to 1:3, and the adhesion rate of the microcapsules containing the fragrance is in a dry state. The aromatic stocking according to claim 1, characterized in that the amount is 0.5 to 2.0 wt% of the stocking weight. (3) Stockings are immersed at room temperature in a treatment solution consisting of melamine resin microcapsules containing fragrance and an acrylic acid ester/methacrylic acid/butadiene copolymer latex binder, then centrifugally dehydrated at 80 to 100°C.
A method for producing aromatic stockings, the method comprising: drying the stockings by drying the stockings.