JPH0411785Y2 - - Google Patents

Description

[Detailed explanation of the idea]

(Industrial Application Field) The present invention relates to a sustained-release aromatic fabric with excellent fragrance persistence. (Prior art) The custom of adding fragrance to fabrics has been practiced for a long time, and its effect is to apply aromatic substances such as perfume or cologne to clothing or the body to remove body odor generated from within the body. The purpose is to remove unpleasant odors by replacing them with scents. Traditionally, in order to impart fragrance to fabric, an aromatic substance dissolved in a volatile solvent such as alcohol is applied directly to the fabric by spraying, or the aromatic substance is added to a film-forming resin and then added. ,
This has been done by applying it to a fabric and forming a resin film containing an aromatic substance inside the resin film on the fabric. (Problem that the invention aims to solve) Although it is possible to easily impart aromatic properties using a spray method, it is difficult to maintain the fragrance because the aromatic substance itself is easily vaporized. I can't get it. On the other hand, according to the addition method to the resin,
If the resin film is non-porous, the volatilization of the aromatic substance into the air is small, so the aroma effect is insufficient. Furthermore, when the resin film is a porous film, the aromatic substance volatilizes to a large extent, resulting in poor sustainability. Furthermore, in order to improve these points, there have recently been attempts to provide sustained release by porous microencapsulation of aromatic substances, but these efforts have not been satisfactory in terms of fragrance sustainability, cost, and yield. The current situation is that this is not the case. The present invention is intended to solve the above-mentioned problems, and its purpose is to provide a sustained-release fragrance fabric that has a long-lasting fragrance and is excellent in washing durability. (Means for Solving the Problems) In order to solve these problems, the present inventors conducted intensive research and found that in order to obtain a sustained-release fabric with excellent fragrance persistence, resin The present invention was arrived at by examining the average thickness of the film and the gas permeability of the resin film itself. That is, the gist of the present invention is a sustained-release aromatic fabric characterized in that the surface of the fabric is coated with a resin film containing an aromatic agent and having a medium gas permeability coefficient. It is. The present invention will be explained in detail below. The drawing shows a schematic diagram of the sustained-release fabric according to the present invention. 1 is a fabric, 2 is an aromatic substance contained in the resin film, and 3 is a resin film. The fabric 1 may be any fiber that can form a resin film layer containing an aromatic substance on the fabric, such as natural fibers such as cotton, hemp, silk, and wool, chemical fibers such as viscose and acetate, nylon, and polyester. Any synthetic fiber may be used. Further, as the fabric, any of woven fabrics, knitted fabrics, and non-woven fabrics can be used. Further, the above-mentioned fabric may be blended with other fibers, mixed fibers, mixed weaving, mixed knitting, or the like. Next, the aromatic substance 2 contained in the resin film
is a volatile substance consisting mainly of perfume, and perfume is an organic substance that is volatile at room temperature and can be used as a flavoring agent for cosmetics, cosmetics, etc. due to its "scent". There are two types of fragrances: natural fragrances and synthetic fragrances, and natural fragrances are those obtained by collecting only fragrance ingredients from natural products. On the other hand, synthetic fragrances are made of terpene compounds and derivatives thereof, and the following two types of compounds have been produced as compounds used in the present invention. One of them is compounds that have the exact same chemical structure as natural fragrance ingredients, such as vanillin (the main component of vanilla fruit), methyl salicylate (the main component of wintergreen oil), and β-phenylethyl alcohol (the main component of rose oil). main components), etc.
The other is a compound having a scent similar to a natural product, such as oxycitronellal (lily of the valley odor), phenylacetaldehyde (hyacinth odor), piperonal (heliotrope odor), and the like. In the present invention, both natural fragrances and synthetic fragrances or mixtures of natural fragrances and synthetic fragrances can be used. Next, after appropriately selecting the above perfume, it is added together with the resin when preparing the resin solution. Regarding the amount added, it is necessary to add it to the resin solid content in order to obtain the aromatic effect.
It is desirable to contain 0.1-2% by weight (hereinafter, % by weight is simply abbreviated as %). In addition, in the case of preparing the resin solution, preparation work in an open system should be avoided from the viewpoint of workability and volatilization of aromatic substances, and should be carried out in a closed system. To form a resin film containing an aromatic substance on a fabric, any of the padding method, spray method, coating method, and lamination method can be used, but in order to form a film with a uniform thickness on the fabric, A coating method or a lamination method is preferred.
Floating knife coaters, gravure rolls, comma roll coaters, etc. can be used as coating machines. In the lamination method, a resin film is first formed on a release paper, and then the resin film and the fabric are bonded to each other by an adhesive method, a transfer method, or a heat fusion method. In the present invention, resins with a medium gas permeability coefficient refer to classes such as polyvinyl alcohol, polyvinylidene chloride, and nylon resins, which have high gas barrier properties, and classes such as silicone elastomers and amino acid/urethane block copolymers, which have high gas permeability. It is ranked in between. Specifically, considering the use in textile products, acrylic resin, urethane resin, chlorosulfonated polyethylene resin, and polyisoprene resin are preferably used. The reason why the above resins are preferably used in the present invention is that the aromatic substances contained in the resin film have the function of gradually volatilizing into the air, and that these resins have good adhesion to fibers and mechanical properties. This is because it is superior in terms of strength and texture. Next, it is desirable that the average thickness of the resin film is at least 5 μm or more, preferably 10-40 μm. If it is thinner than 5μm, a soft texture can be obtained, but the persistence of the fragrance tends to be poor, and on the other hand,
If the thickness exceeds 40 μm, the fragrance tends to be less effective, and the texture may become hard. Note that if it is desired to increase the volatilization rate of the aromatic substance from the fabric, the amount of fragrance added may be increased or the thickness of the resin film may be reduced. (Example) Hereinafter, the present invention will be specifically explained using examples. Example 1 Nylon multifilament (semidull) 420
A fabric for bag material was woven in a water jet loom using denier/48 filament yarn for the warp and weft. {Woven structure: flat structure, fabric density: (warp) 51 threads/2.54cm, (weft) 32 threads/2.54cm,} Continuously refined with an open soaper and dyed blue using acid dye in a jitzger. Conducted (98℃×60
minutes), and then heat set in a tenter at 150°C for 1 minute. Next, 5% fluorine-based water repellent material (product name Asahi Guard AG-710, Asahi Glass KK product)
Immerse it in an aqueous solution and squeeze it uniformly at a squeezing rate of 60%.
After drying at 100°C for 5 minutes, heat treatment was performed at 150°C for 1 minute. Next, a calendar processing machine consisting of a mirror-finish cast iron roll and a cotton bowl is used to heat the product to a temperature of 160.
The blinding process was carried out under the conditions of ℃, pressure of 30 kg/cm ² , and cloth speed of 20 m/min. Using a floating knife coater, the acrylic resin shown in Formulation 1 (resin solids concentration 25%) was applied to the calendered surface of the fabric at a coating thickness of 50 μm, and then dried at 100°C, and then dried at 150°C for 1 minute. Heat treatment was performed under the following conditions to obtain a fabric containing an aromatic substance. (Formulation 1) Acrylic resin 100 parts (Product name: Criscoat P-1330 Dainippon Ink Chemical KK product) Fragrance 2 parts (β-phenylethyl alcohol pure content 20%) (Product name: Rose R-5392 Takasago Perfume KK product) Product) Toluene 20 parts Next, Comparative Examples 1 and 2 were prepared for the purpose of comparison with the present invention. Comparative Examples 1 and 2 The nylon fabric used in Example 1 was prepared,
Processing was carried out under exactly the same conditions as in Example 1, except for the coating resin formulations (Formulations 2 and 3). (Formulation 2) Butyral resin 30 parts (polymerization degree 600 butyralization degree 60 mol%) Fragrance (β-phenylethyl alcohol pure content 20%)
2 parts (Product name: Rose R-5392 Takasago Fragrance KK product) Ethanol/Toluene 88 parts VOL ratio 1/1 (Formulation 3) Silicone resin (Methylhydrodiene polysiloxane/dimethyl polysiloxane mixture) 100 parts (Product name: Poron Coat Solid content 15% Shin-Etsu Chemical
kk product) Catalyst PC (organic metal salt) 1 part PC (cocatalyst for reaction) 1 part fragrance (β-phenylethyl alcohol, purity 20
%) 2 parts (trade name: Rose R-5392 Takasago Fragrance KK product) The aroma performance of the obtained coated fabric was examined and the results are shown in Table 1. Regarding the aroma performance, 10 panelists each tested 20℃ x 65%.
The presence or absence of a "scent" was examined at a distance of 50 cm from each prototype Sunful (size: 50 cm x 50 cm) in a room with RH, wind speed of 0.6 m/sec, and air volume of ¹⁸ m 3 .

[Table] As is clear from Table 1, the aroma performance differs depending on the type of resin, and in this invention,
Both the fragrance effect and fragrance persistence were satisfactory. In other words, regarding durability in washing, 10
Even after washing twice, the "fragrance" was sufficiently observed. In addition, due to the sustained release effect, "fragrance" was observed even after 6 months of processing, indicating that the fragrance had sufficient persistence. On the other hand, in the case of butyral resin, similar to PVA resin, it has gas barrier properties, so no aromatic effect was observed. In addition, in the case of silicone resin, the gas permeability is too high, as is the case with collagen materials, and although a "scent" was observed immediately after processing, the persistence of the scent and washing durability were poor. (Effects of the invention) The sustained-release fabric according to the invention has a long-lasting fragrance and has excellent washing durability.
It can be used in a wide range of applications, including miscellaneous goods such as bags and shoes, interior items such as wall materials and curtains, and sanitary items such as diaper covers and bed covers.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view schematically illustrating the sustained-release aromatic fabric of the present invention. 1...Fabric, 2...Aromatic substance, 3...Resin film.

Claims (1)

[Claims for Utility Model Registration] (1) A sustained-release aromatic fabric characterized in that the surface of the fabric is coated with a resin film containing an aromatic agent and having a medium gas permeability coefficient. . (2) Utility model registration claim No. 1 in which the resin composition forming the resin film is a resin selected from the group consisting of acrylic resin, urethane resin, chlorosulfonated polyethylene resin, polyisoprene resin, and mixed resins thereof. The sustained-release aromatic fabric described in Section 1. (3) The sustained-release aromatic fabric according to claim 1 or 2, wherein the average thickness of the resin film coated on the fabric surface is at least 5 μm or more.