JPH025958A - Application of perfume - Google Patents

Abstract

PURPOSE:To easily liberate perfume for a short time, e.g., for several min or liberate different perfume in each use by heating a perfume-applied sheet which is obtained by coating a basic material member with the perfume containing microcapsules. CONSTITUTION:A perfume containing microcapsule is formed by using a polymer for microcapsule which is proper for the desired perfume. The desirable perfume has a boiling point of 80-200 deg.C, preferably 100-180 deg.C. As for the dimension of the microcapsule, the average particle diameter is 1-100mum, more preferably 5-50mum. A perfume-applied sheet is obtained by coating a basic material sheet with the perfume containing microcapsules. The basic material sheet may be paper, nonwoven fabric, polymer film, metal foil, cloth, etc., having a thickness of 5-500mum. Since the heater temperature rises to a temperature sufficient for liberating perfume by the electric conduction for about 30sec or more, the perfume-applied sheet is placed onto a heater part, and electric conduction is carried out for a prescribed time.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a scenting method for scenting a room, a toilet, a car, etc.

BACKGROUND ART Conventionally, fragrance mats and the like have been used to add scent to rooms, toilets, passenger cars, etc., or to eliminate unpleasant odors. Alternatively, the insecticide-impregnated pine tree 1- or the like is simultaneously impregnated with fragrance, and then heated with a heater to impart fragrance. What these perfuming methods have in common is that they all emit a fragrance continuously for a long time. The human sense of smell becomes paralyzed in a short period of time, and the continuous evaporation of scent over a long period of time is not only wasteful, but can also cause discomfort. For example, with aromatic mats, etc., when the package is closed, there is a very strong odor, and it is rather unpleasant.
It loses its effectiveness after a short period of time and must be replaced with a new one. In addition, conventional cloaks impregnated with insecticides and fragrances require relatively thick mats because they are impregnated with fragrances, etc., and as a result, the mats are heated to the transpiration temperature of the fragrance. It takes a relatively long time for the product to be scented, making it unsuitable for the purpose of providing fragrance in a short period of time, such as in a restroom.

In addition, such impregnated products need to be used as soon as possible after opening, which increases the unit price of the mat and is not only unsuitable for intermittent use, but also allows users to enjoy a different scent each time they are used. It is not suitable for that purpose. Since it is necessary to heat a thicker mat, a household 100V power supply is required as a heating power supply, and it is necessary to connect the heater with a power cord. The use of power cords is very cumbersome and subject to space constraints.

Problems to be Solved by the Invention The present invention provides an incense-imparting method that can emit a fragrance in a short period of time, e.g., for several minutes, in a room, etc., or can easily emit a fragrance each time it is used. The purpose is to provide

Means for Solving the Problems The present invention relates to a perfuming method characterized by heating a perfuming sheet having perfume-containing capsules coated on a base material.

The fragrance-containing capsule used in the present invention is one in which a desired fragrance is microencapsulated using a suitable microencapsulating polymer.

In carrying out the present invention, fragrances that volatilize at extremely high heating temperatures are undesirable due to the objective of the invention of volatilizing in a short time, and due to restrictions based on the heater, and it is not preferable to use fragrances that volatilize at extremely low temperatures. Flavoring agents are unfavorable in terms of storage stability. Therefore, suitable fragrances have a boiling point of 80 to 200.
℃, more preferably about 100 to 180°C. It is sufficient to select a fragrance that gives off the desired aroma within that range.

Polymers for microencapsulation include vinylidene chloride, acrylic acid esters, methacrylic acid esters, acrylonitrile, styrene, vinyl chloride, vinylidene chloride, vinyl acetate, etc. alone or copolymers, or their seven polymers, maleic acid, itacon, etc. acid, ntraconic acid,
Alternatively, copolymers with esters thereof, etc. are exemplified.

Examples of preferred specific polymers include vinylidene chloride/acrylonitrile copolymer, vinylidene chloride/methacrylic acid ester copolymer, vinyl acetate/acrylonitrile copolymer, methyl methacrylate/acrylonitrile copolymer, and vinylidene chloride/styrene/acrylonitrile copolymer. Examples include vinylidene chloride/styrene/acrylic acid ester copolymer, vinylidene chloride/acrylonitrile/methacrylic acid ester copolymer, and the like. Of course, it is not limited to these polymers.

In particular, a copolymer containing vinylidene chloride is particularly preferred because it has excellent preservation of fragrance when not in use and tends to easily diffuse fragrance when in use.

It is desirable that the microcapsules used in the present invention have the property of softening and breaking the shell wall in a short period of time at heating temperatures to release the fragrance. Therefore, the softening point of the polymer is preferably 80 to 200°C, particularly preferably 100 to 180°C.

The average particle size of microcapsules is 1 to 100 μm.
1, more preferably 5 to 50 μm. If the particle size is smaller than 1Pm, the amount of fragrance per unit microcapsule will be small, and the amount of fragrance released will be small. Even if the particle size is small, if a large amount of microcapsules is used, the absolute amount of fragrance can be increased, but the heat transfer rate during heating is reduced, resulting in a decrease in the dissipation response of the fragrance. Of course, this problem can be solved by increasing the wattage density of the heater, or by making the heater larger, which will increase battery consumption. If the particle size of the microcapsules is too large, the mechanical strength will be reduced, and there is a possibility that the microcapsules will break during the process of applying the microcapsules to the base sheet and during the storage process, and the fragrance will be released.

Microcapsules of fragrances can be easily produced by methods commonly used for conventional microencapsulation, such as coacervate method, interfacial polymerization method, and in situ polymerization method.

A fragrance sheet is obtained by applying the fragrance-containing microcapsules to a base sheet. The base sheet may be anything with a thickness of about 50 to 500 μm, such as paper, nonwoven fabric, polymer film, metal foil, cloth, etc.

Metal foil is preferable because it has good thermal conductivity and the peripheral edge of the perfume sheet does not warp when heated, but it is expensive and difficult to coat and fix microcapsules on. Preferred base sheets are paper, nonwoven fabric and cloth;
In particular, Japanese paper is preferable because its periphery does not warp when heated and the microcapsules can easily adhere to it.

In order to apply the fragrance-containing microcapsules to a base sheet, the microcapsules may be dispersed in a suitable binder, coated on the base sheet by a method such as brush coating, roll coating, spraying, etc., and dried.

The binder may be either a solution type or an emulsion type. Suitable binder resins include vinyl acetate polymers (eg, polyvinyl acetate, vinyl acetate/ethylene copolymer, butyl acetate/V-butyl maleate copolymer, etc.);
Styrene/butadiene polymers, acrylic polymers (methyl acrylate, ethyl acrylate, butyl acrylate, ethyl methacrylate, acrylic acid/ethyl acrylate copolymers, etc.), polyhinylalconobutadiene/acrylonitrile copolymers , vinyl chloride, etc.

Adhesion of fragrance-containing microcapsules to base sheet 1”1
is 20-150 g per m2 of base sheet, especially 40
~100g (1 m2 of base sheet in terms of fragrance purity)
10-140y, preferably 30 to 100g).

Microno J Pucelle containing Tanyori may be applied to both sides or one side of a base sheet, or at least one side is coated with a porous base sheet such as cloth that does not interfere with the release of fragrance, and the other side is coated with another base sheet. A sandwich structure may be used in which a sheet, for example Japanese paper, is provided and the fragrance-containing microcapsules are sandwiched between the sheets.

The perfume/te obtained in this way is cut into a suitable shape and used. For example, use a tape with a width of about 5 to 10 mm.
When using the tape, it may be torn off with one's fingers, or the tape may be perforated so that it can be cut to an appropriate size. Alternatively, when used in a heater equipped with an automatic tape feeding mechanism, the tape may be wound on a reel. Or one with appropriate base grid-like cuts for sorting, and the size to be used (for example, 5 mm
5 mm) may be used. The sheets cut into small pieces in this way may be put on the market in cassettes so that they can be taken out one by one. Furthermore, flower shape,
It may be made into an appropriate shape such as a bar shape, and may be color-coded depending on the type of fragrance.

In order to heat the perfume sheet, it is necessary to use a heater having a high watt density that can raise the temperature to such a degree that the microcapsules soften in a short period of time and the perfume evaporates when energized. For this purpose, it is preferable to use a heater using a heating element material having a high usable temperature, such as tungsten, molybdenum, tantalum, or the like. Since these heating elements have a high usable temperature, it is possible to increase the amount of heat generated per unit area, so that a portion of the heater can be made as small as possible and only that portion can be heated to a high temperature in a short time. Therefore, power consumption can be reduced and a sufficiently high temperature can be obtained using dry batteries or the like. However, these heating elements can generally only be used in air, so at present, a heating element is printed on a substrate such as alumina ceramic to form a heater pattern, the surface is coated with an alumina protective layer, and the heating element is integrally fired. So-called ceramic heater
It is recommended to use one that is commercially available. In this type of ceramic heater, the heating element is completely isolated from the outside, so even if the fragrance evaporates, the heating element will not be damaged.

For such a heater, the heating area is approximately 5mm x 5m.
Since it is sold starting from about m, you can use it. For heating, by applying electricity for about 30 seconds or more, the heating temperature rises to a temperature sufficient for 1 minute to release the perfume, so it is sufficient to place the scented sheet on the heater section and apply electricity for a predetermined period of time. Alternatively, the heater may be equipped with a timer that turns on and off at desired intervals. The incense sheet loses its effectiveness after one to several uses, so if necessary, wrap the tape-shaped incense sheet around a reel and set the heater so that a new surface moves to a part of the heater each time the switch is pressed. You may devise a method. The energization and the movement of /-1. may be linked to perform heating automatically and intermittently.

The present invention will be explained below with reference to Examples.

Example Microcapsules 301 containing fragrance (lavender oil) and having an average particle size of 15 μm and having a vinylidene chloride/acrylonitrile copolymer shell. was uniformly dispersed in 60 g of an acrylic emulsion type binder (solid content 50%), and this was spread onto a rayon cloth (thickness 0.4 mm) at a rate of 200 g/m.
”.This was dried naturally and a 5x5m
Cut to m size to obtain incense sheet.

Heater part area 5.5 x 5.5 mm, working voltage 3V,
Place the above fragrance sheet on a ceramic heater (manufactured by Kyocera Corporation) that uses tungsten as a heating element, and
? ! When electricity was applied for about 30 seconds using 12 pieces, a lavender scent wafted through the air. This operation was repeated 5 times, but by the 5th time, almost no fragrance was generated.

Effects of the Invention When the method of the present invention is used, the fragrance can be diffused in a short time and intermittently, so the sense of smell is stimulated each time, allowing the user to enjoy a fresh scent. You can also enjoy a different scent each time you use it. The heating is powered by batteries and does not require a cord, so the heater can be easily carried and placed anywhere.

Claims (1)

[Claims] 1. A perfuming method comprising heating a perfuming sheet having perfume-containing microcapsules coated on a base material. 2. Fragrance-containing microcapsules have an average particle size of 1 to 100μ
2. The perfume-imparting method according to item 1, wherein m. 3. The perfuming method according to item 1, wherein the base material is paper, nonwoven fabric, or cloth. 4. The perfume-imparting method according to item 1, wherein heating is performed at 110 to 170°C. 5. The perfume-imparting method according to item 1, wherein the heating is performed using a ceramic heater.