JPH0480121B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to stockings having an aromatic property, and more particularly, to stockings having a durable fragrance by attaching microcapsules containing a fragrance to knitted stockings, and a method for producing the stockings. It is something. (Prior Art) Various developments have been made in the past with regard to fragranced clothing, and many have appeared on the market. However, many of these products are simply sprayed with perfume on the final product or coated with fragrant substances on the surface, and the fragrance disappears when the perfume evaporates, and the washing resistance is also affected. Scarce;
The fragrance was completely removed after one wash. Therefore, processing methods to maintain the fragrance for a long period of time have been proposed in Japanese Patent Publication No. 53-47440 and Japanese Patent Application Laid-open No. 54-
Many proposals have been made, such as Publication No. 112283. Under these circumstances, various attempts have been made to add fragrance to stockings. This too,
Conventionally, perfume was sprayed on the stockings at the time of finishing, or scented paper was placed inside the packaging bag during packaging, or scented paper was used as the core paper, and the scent was transferred to the stockings. (Problems to be Solved by the Invention) However, it goes without saying that the stockings obtained as described above have poor fragrance durability, and the fragrance completely disappears after just one wash. , and had extremely low commercial value. Furthermore, by coming into contact with the outside air while wearing it,
The fragrance evaporated quickly, and in some cases the fragrance remained for only a few hours after being worn. In addition, in cases where the scent of aromatic paper is transferred to stockings in a packaging bag, the strength of the fragrance varies depending on the time elapsed after the bag is sealed, and as a result, the scent is not pleasant and the product itself is defective. There were cases where it became a product. In view of the above-mentioned circumstances, the inventors of the present invention have conducted extensive studies with the aim of imparting a durable fragrance to stockings, and have found that the use of microcapsules containing fragrance can be used to fragrance stockings. We found that it is suitable. Various manufacturing methods have been developed for these microcapsules, and the representative one is
Examples include the method described in Publication No. 7724. Furthermore, various proposals have been made to apply microcapsules to fibers, such as in Japanese Patent Application Laid-Open No. 19197-1983. However, the present invention provides a long-lasting fragrance by attaching microcapsules containing a fragrance to stockings, that is, the microcapsules are gradually torn by friction during wear, resulting in a continuous release effect. This is what we focused on. However, stockings are made of extremely high-density knitted fabric, and the knitting yarn is a filament mainly made of nylon with low surface friction, so it is extremely difficult to attach microcapsules to the stockings. That is, it is relatively easy to attach microcapsules to porous chemical fibers, etc., but this is difficult to do to stockings made of nylon filament, etc., and the amount of adhesion may be increased. Even if complicated processing was carried out for the sole purpose of this purpose, the fragrance would only become stronger and the texture would tend to deteriorate, making it unsuitable for use as scented stockings. In other words, in the case of stockings, if you consider the durability of the product itself, you can wear it 20 or 30 times.
Rather than products that strive for durability over multiple washes, products that can maintain a subtle, pleasant fragrance for a reasonable period of time are of higher commercial value. The present invention was made based on the above-mentioned judgment, and has achieved the combination of "desirable fragrance emission" and "fragrance sustainability" without impairing the soft texture, elasticity, etc. of the stockings themselves. The purpose is to provide aromatic stockings that can satisfy both requirements. (Means for Solving the Problems) The stockings of the present invention that achieve the above objects are stockings in which fragrance-containing microcapsules are uniformly adhered to substantially the entire surface of the knitted fabric, and the stockings are made of microcapsules and silicone coating. The stockings are scented stockings in which the stocking material and the stocking material are applied in a ratio (weight ratio) of 1:1 to 1:2, and the amount of both of them is 2.0 to 7.0% of the total weight of the stockings in a dry state. The method for producing these aromatic stockings involves placing the stockings in a treatment bath containing a mixture of fragrance-containing microcapsules and silicone coating material at a ratio (weight ratio) of 1:1 to 1:2.
There is a method in which the hydrogen ion concentration of the treatment bath is set and maintained within the range of 4 to 6 using a buffer, and heat treatment is performed at 20 to 60°C. (Function) When the aromatic stockings configured as described above are worn, the fragrance-containing microcapsules, which are uniformly adhered to almost the entire surface of the knitted fabric, are broken one by one due to the friction during wearing, and a moderate fragrance is released. Ru. Also,
By applying an appropriate amount of silicone coating material as a binder, the adhesion of the microcapsules to the knitted fabric becomes sufficient, and excessive shedding due to washing is prevented. In the manufacturing method, the pH of the treatment bath in which the fragrance-containing microcapsules and the silicone coating material are mixed is made into an acidic bath within the range of 4 to 6, thereby improving the bonding strength between the microcapsules and the binder. Capsule binder/
The adhesion between the knitted fabrics is moderately improved, and a suitable adhesion amount can be obtained under stable reaction. (Example) The present invention will be specifically described below. Stockings as used in the present invention refer to all types of stockings, including over-knee stockings with leg lengths above the knee, full-length stockings that extend to the base of the thighs, and panty stockings that integrate panty and stocking parts. It is a general term for. The composition of the fragrance-containing microcapsules used in the present invention is not particularly limited, as long as they can be broken by appropriate friction and emit a fragrance.
Low formalin microcapsules are used. In addition, the silicone-based coating material used as a binder has a coating effect and plays the role of an adhesive between the microcapsules and the knitted fabric, and has particularly good dispersibility in water and can be easily diluted with water. An emulsion type is preferred. This forms a rubber-like film having the characteristics of silicone rubber by evaporation of water, and provides a durable adhesive effect. This coating material is applied in an amount of 1 to 2 times (weight ratio) that of the microcapsules, and exhibits a sufficient adhesive effect. In other words, if this amount is less than the amount of microcapsules, the coating effect will be extremely poor, while if more than twice this amount is given, the adhesion rate of microcapsules will hardly change, and on the contrary, the soft texture of stockings and This is not preferable because it causes problems in elasticity. As described above, in the stockings of the present invention in which the microcapsules and the silicone-based coating material are applied in a ratio of 1:1 to 1:2, the amount of both of these substances deposited is 2.0 to 7.0% of the total weight of the stockings in a dry state.
It is structured as occupying the In other words, the microcapsules will adhere sufficiently to the stockings when the silicone coating material is applied in the above proportion, so if the amount of both of these substances attached is less than the above 2.0%, the strength of the fragrance will increase. On the other hand, if the content exceeds 7.0%, it affects the feel and elasticity of stockings, and there is also the problem that the fragrance released at one time becomes too strong.
Both are inappropriate. In other words, a product that satisfies all the requirements of having a favorable scent dispersion effect, a suitable texture and flexibility as a stocking, and having an appropriate fragrance durability, has the above-mentioned amount of adhesion in the dry state In stockings, the amount is 2.0 to 7.0%, preferably 2.5 to 6.0% of the total weight. Next, a method for manufacturing the above-mentioned aromatic stockings will be explained. In this manufacturing method, it is preferable that the process of attaching the fragrance-containing microcapsules is carried out during the softening process after the stockings have been dyed and subjected to the fixing process, as this will efficiently produce excellent processing effects. First, microcapsules and silicone coating material are put into a processing machine at a ratio (weight ratio) of 1:1 to 1:2 to form a processing bath that is the same bath as the softener. At this time, each chemical should be sufficiently dissolved and diluted with water before being added. Then, when these become sufficiently uniform, a buffer is added. This buffer is used to adjust the hydrogen ion concentration of the processing bath and achieve the optimum pH.
For example, there are various types such as those that have condensed phosphate as the main component and exhibit excellent pH buffering power, but depending on the properties and amount added, the pH of the treatment bath can be set to 4 to 4. There is no particular limitation as long as the setting can be maintained within the range of 6. That is, by making the treatment bath an acidic bath,
Processing using a silicone-based coating material that is sensitive to alkali is stabilized and the reaction is accelerated, which strengthens the bond between the microcapsule/coating material and the microcapsule/coating material/knitted fabric, resulting in better adsorption. This results in a marked improvement in performance. Therefore, the PH of the treatment bath should be less than 6, but if the PH is too low, below 4, microcapsules, coating materials, softeners, etc. will aggregate and form complexes, which will cause adhesion spots. Not suitable. Therefore, the pH of the treatment bath is set within the range of 4 to 6 using a buffer,
A particularly suitable target value is PH4.5 to 5.5. Then, an appropriate amount of stockings is placed in this treatment bath, and heat treatment is performed at 20 to 60°C. If the treatment temperature is less than 20℃, a satisfactory treatment effect cannot be obtained even if the treatment time is extended, while if it is higher than 60℃, it is not favorable for each chemical or stocking. Since this may cause problems in terms of quality, it is preferable to keep the softening temperature within the above range, particularly 40 to 50°C, which is the usual softening temperature. It should be noted that the time for this treatment is related to the temperature, but longer treatment times do not necessarily result in superior treatment effects; about 15 to 30 minutes is sufficient. The treated stockings thus obtained are sent to the next step of dehydration, drying, and final setting to become a finished product. [Specific example] The following two types of stockings were knitted and dyed.
After the fixing process was completed, the process was carried out in the manner described above. Test item; Pantaste tuck leg part 15d/3f kennel yarn panty toe part 30d/8f woolly thread Pantastet tucked leg part (20×13×13DCY)×13d/3f raw silk panty toe part (20× 30POY) x 30d/8f woolly thread tow section 13d/3f raw silk x 30d/8f woolly thread x 70d/18f woolly thread coating material; silicone water-based coating material Shin-Etsu Silicone KM-2002T [Shin-Etsu Chemical Co., Ltd.] Buffer; Ultra MT [Mitejima Kagaku Kogyo Co., Ltd.] Softener: Durable water-absorbing softener 2% owf Sun Softner Tough A Tough B CAT F-50 [Sanyo Kasei Kogyo Co., Ltd.] Washing resistance test is based on JIS LO217 It was carried out according to the 103 method and expressed as the number of times until the fragrance disappeared. In addition, the fragrance was evaluated by 10 people on a 5-point scale (0 points are given for those emitting the optimal fragrance, +1 and +2 are given for those that are too strong above and below that, and -1 and -2 are given for those that are too weak). ), and the average score was used as the evaluation score. Also, regarding the texture, it is also 10
Only things that people feel are particularly inferior are checked and expressed in the number of checks. The results are shown in the table below.

[Table] Looking at the results, it is clear that the aromatic stockings according to the present invention have achieved the objectives of our laboratory, that is, they have a durable, pleasant scent and a good texture. It will be. (Effects of the Invention) The present invention achieves the following effects with the configuration described above. First, since the microcapsules containing the fragrance are uniformly adhered to almost the entire surface of the knitted fabric of the stockings, the capsules gradually break due to friction during wear, gradually releasing a suitable fragrance. Therefore, the fragrance does not emanate and disappear all at once, but has sufficient sustainability. Furthermore, by applying a silicone-based coating material as a binder to the microcapsules in an appropriate proportion, the adhesive strength and adhesion properties are significantly improved, and the desired adhesion amount and fragrance durability are achieved. The manufacturing method does not require complicated processing steps, and uses a treatment bath in which microcapsules and silicone coating material are mixed in an appropriate ratio, and the hydrogen ion concentration is set and maintained at a suitable level. This is a method that can reliably produce the aromatic stockings according to the present invention by adding and performing heat treatment.

Claims (1)

[Scope of Claims] 1. Stockings in which fragrance-containing microcapsules are uniformly adhered to substantially the entire surface of a knitted fabric, wherein the microcapsules and silicone coating material are in a ratio of 1:1 to 1:2 (weight ratio). ), and the amount of both of these deposits accounts for 2.0 to 7.0% of the total weight of the stockings in a dry state. 2. Ratio of fragrance-containing microcapsules and silicone coating material to 1:1 to 1:2 (weight ratio)
A claim characterized in that stockings are put into a treatment bath mixed with the above, and the hydrogen ion concentration of the treatment bath is set and maintained within the range of 4 to 6 with a buffer, and heat treatment is performed at 20 to 60 ° C. Item 1. The method for producing aromatic stockings according to item 1.