JPH0136379B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to an air freshener container that is placed in an appropriate place such as a washroom, other indoor rooms, or inside a car, and volatilizes the aroma of a compounded fragrance contained therein through a porous sheet covered with a volatilization port. The fragrance container of the present invention has the effect of keeping the aroma tone and intensity of the fragrance of the blended fragrance substantially constant during use. [Prior Art] There are countless types of fragrances, but they are generally classified according to their volatility, from the viewpoint that vaporized fragrant molecules enter the nasal cavity and stimulate the olfactory nerves, causing the sense of smell. It is classified into three types as shown below. A typical blended fragrance is made by mixing two or more fragrances of different classifications, that is, of different volatilities (vapor pressures). (1) Top note: A highly volatile note that evaporates within 2 hours when placed on scented paper and leaves no odor behind, and is necessary to improve the first impression of the scent of a blended fragrance. It is. (2) Middle note: It has medium volatility and the odor lasts for 2 to 6 hours when placed on scented paper, and is an important part of the odor characteristics of a blended fragrance. (3) Base note: low volatility and long retention,
The odor remains on the odor paper for more than 6 hours, and is a characteristic of the odor of the blended fragrance. Ordinary fragrances are constructed so that the above-mentioned mixed fragrances are supported on a carrier such as a gel or various impregnated materials, and can be volatilized from the carrier. It is put into practical use by being housed in a container or wrapped in a sheet or film.
As a container for storing air fresheners,
In addition to those described in the above publication, various other products are known.Fragrances packaged in sheets or films are disclosed, for example, in JP-A-57-139346 and JP-A-54-120075. The fragrance or air freshener described in . Furthermore, as a method for volatilizing a perfume made of perfume components having various vapor pressures in a constant aroma tone as much as possible, a method for volatilizing a perfume described in Japanese Patent Publication No. 58-50740 is known. [Problems to be Solved by the Invention] The above-mentioned blended fragrances used in fragrances are composed of two or more fragrance components with different vapor pressures, and the component with a high vapor pressure, that is, the component that is easily volatilized, is Since the composition of the blended fragrance changes over time because it disappears more easily in a short time, it has the disadvantage that the composition of the volatile components changes and the aroma tone of the fragrance changes. In addition, in order to solve the above-mentioned drawbacks, the method for volatilizing fragrances described in Japanese Patent Publication No. 58-50740 divides fragrances into two or more groups according to the magnitude of their vapor pressure, and the volatilization area is determined for each group. However, with this method, there is a limit to the number of groups that can be separated, making it difficult to obtain the desired blended fragrance. In addition to being difficult, there are also restrictions on the structure of the container. Furthermore, the fragrance described in JP-A-57-139346 is made by packaging a fragrance in a porous sheet. However, this porous sheet is a water-repellent porous sheet selected as a sheet that allows vaporized fragrance to pass through but does not allow water to pass through, and this invention takes into account the prevention of wetting of the fragrance from the outside. However, no consideration is given to the size of the pores and the thickness of the film to volatilize the blended fragrance without changing over time, and the fragrance is directly packaged in a porous sheet. In addition, JP-A-54-120075 discloses an air freshener that can adjust the volatilization rate by using a polymer film, but this invention has a function to adjust the volatilization rate of the entire fragrance. There is no function to separately adjust the volatilization rate of fragrance components with different vapor pressures. Furthermore, the film disclosed in this publication can hardly be called a porous sheet and does not have a practical volatilization rate adjustment function. Further, Japanese Utility Model Publication No. 5-163 describes a container with a volatilization perforation in which a container filled with an aromatic agent is provided with a liquid absorption wick. However, with this container, the amount of fragrance volatilized varies depending on external conditions such as air volume and humidity, and the intensity of the fragrance changes over time.
When a liquid blended perfume composed of two or more perfume components having different vapor pressures is used as a perfume, the tone of the fragrance cannot be maintained constant as described above. In addition, various types of containers for storing fragrances are known that use electric energy or, in toilets and washrooms, the potential energy of vertically moving flush water to open the volatilization port only when necessary. However, there are major limitations on the use of this type of container, such as those that use electrical energy to be expensive, and those that use the potential energy of water to limit the use of water. When using a liquid blended fragrance composed of two or more different fragrance components, as described above, it is not possible to maintain the fragrance tone and intensity constant over time. Therefore, the present inventors have provided a fragrance container that can volatilize the above-mentioned mixed fragrance without changing the fragrance tone and intensity over time, without dividing the fragrance into groups according to components with different volatilities. As a result of various studies, we found that when a mixed fragrance is volatilized through a porous sheet with a specific pore size and film thickness, the amount of volatilization of two or more fragrances with different vapor pressures that make up the mixed fragrance is as follows: It was discovered that the fragrance was volatilized through the porous sheet at approximately the same rate as the composition of the blended fragrance, and was not proportional to the amount of volatilization. proposed a fragrance container characterized by containing a blended fragrance in a container whose volatilization port was covered with a porous sheet having a thickness of 10 to 1000 μm and having numerous pores with pore diameters of 0.1 to 20 μm. However, in the above fragrance container proposed by the present inventors, there was a tendency for the intensity of the fragrance to decrease slightly over time. Therefore, an object of the present invention is to improve the above-mentioned tendency of the fragrance container previously proposed by the present inventors, and to maintain not only the fragrance tone but also the intensity of the fragrance more constant over time. The purpose of the present invention is to provide an air freshener container that can be used as an air freshener. [Means for Solving the Problems] As a result of intensive studies to achieve the above object, the present inventors have previously proposed a space in contact with a porous sheet inside an air freshener container. In addition, by volatilizing the liquid blended fragrance through a liquid absorption wick instead of directly volatilizing it, the intensity of the aroma can be kept more constant over time while keeping the aroma tone constant over time. I found out. The present invention was made based on the above findings, and
A liquid blended fragrance is stored in a container whose volatilization port is covered with a porous sheet having a thickness of 10 to 1000 μm and has numerous pores with a pore diameter of 0.1 to 20 μm, and the above-mentioned liquid is introduced into the space inside the container in contact with the porous sheet. The above object has been achieved by providing a fragrance container characterized in that a liquid blended fragrance is volatilized through a liquid suction wick. Hereinafter, the fragrance container of the present invention will be explained in detail. To explain the porous sheet used in the fragrance container of the present invention, the porous sheet has a pore diameter of 0.1 to 20 μm.
m, preferably 0.2 to 15 μm, film thickness 10 to 1000 μm,
Preferably, a porous sheet with a diameter of 20 to 500 μm is used. If the pore size is larger than the above range or the film thickness is thinner than the above range, the amount of fragrance volatilized approaches that of free volatilization. The volatilization suppression function (volatilization adjustment function) is lost, and if the pore diameter is smaller than the above range or the film thickness is thicker than the above range, volatilization will be uniformly suppressed regardless of the vapor pressure of the fragrance. However, the desired volatilization control function is impaired and the object of the present invention cannot be achieved. The material of the porous sheet is not limited as long as it can obtain a sheet with the above-mentioned thickness, can provide pores with the above-mentioned pore diameter, and has fragrance resistance. is polyester,
Films made from one or more of polyacetal, polysiloxane, polyepoxy, polyethylene, polypropylene, polybutene, polyamide, polyvinyl alcohol, polyethylene oxide, polyvinylidene chloride, polytetrafluoroethylene, polyurethane, polyurethane hydroxymethyl cellulose, cellophane, etc. Alternatively, nonwoven fabrics, polyurethane coated fabrics, etc. can be used. Further, the method of manufacturing the porous sheet is not limited, but one manufactured, for example, by the following method is suitable. A film obtained by stretching a resin containing 35 to 85% by weight of an inorganic filler to the above-mentioned thickness. This film has voids formed between the resin and the inorganic filler by stretching, and has the above-mentioned pore size. A nonwoven fabric having the above thickness obtained by a conventional nonwoven fabric method using a hot melt adhesive. This nonwoven fabric is obtained having the pore size described above. A sheet having the above film thickness and pore diameter obtained by coating cloth (1 mm thick) with a polyurethane microporous film (40 μm thick). Incidentally, the inorganic filler used in obtaining the above-mentioned film includes metal oxides, hydroxides, and salts having a particle size of 0.1 to 1000 μm (average particle size), such as magnesium oxide. ,
Alumina, silica, calcium carbonate, magnesium chloride, basic magnesium carbonate, calcium sulfate, magnesium sulfate, aluminum sulfate,
Examples include calcium silicate, cement, zeolite, clay, and the like. Furthermore, the liquid perfume used in the present invention is not limited as long as it is a mixture of two or more perfumes with different vapor pressures, but at least the above-mentioned top note, middle note, and/or base note are mixed. Preferably. In that case, it is preferable to use a mixture of two or more fragrances with a vapor pressure ratio of at least 5 times or more, especially 20 times or more, and the top note/(middle note + base note) ratio is 99/1 to 99/1. 5/95 is preferred. The liquid suction wick used in the present invention may have a capillary structure and may be made of cellulose, wool, plastic (poepropylene, polyethylene, polyester, polyacrylonitrile, others, or two or more of these). combinations) are usually used. Further, there is no particular restriction on the cross-sectional shape, and any shape such as a round shape, a square shape, a star shape, etc. can be used. The fragrance container of the present invention stores the liquid blended fragrance in a container whose volatilization port (opening) is covered with the porous sheet, and allows the liquid to flow into the space inside the container that is in contact with the porous sheet. The blended fragrance is volatilized through a liquid absorption wick.
The container has an opening large enough to volatilize the liquid blended fragrance, the opening is completely covered with the porous sheet, and the container has an opening as described above that is in contact with the porous sheet. The space is divided into a space and a space for accommodating the liquid blended fragrance, and the shape is not limited in any way as long as both spaces communicate with each other via the liquid suction wick. Further, the size of the container is not particularly limited, but it is preferable to have at least a sufficient volume of the space in contact with the porous sheet in order to keep the strength of the volatilized incense constant and to volatilize a uniform aroma. Further, the space in contact with the porous sheet and the space accommodating the liquid blended fragrance are each constructed of separate removable containers (casings), and they are communicated with each other through a liquid suction wick insertion hole. The liquid suction wick can be configured by fitting the liquid suction wick into the liquid suction wick insertion hole. Then, filling and refilling the space that accommodates the liquid blended flavor with the liquid blended flavor can be done by providing an appropriate opening/closable filling port in the latter housing, or
The liquid suction wick can be removably inserted into the liquid suction wick insertion hole, and the liquid suction wick can be inserted from the inside of the former housing through the liquid suction wick insertion hole. Also,
Filling the liquid blended fragrance through the liquid suction wick insertion hole,
When refilling, it is preferable that the porous sheet can be attached to the opening of the container via a removable porous sheet support frame, etc. However, if the container has a lid, Since refilling of the blended fragrance can be performed through the opening into which the lid is fitted, the porous sheet can be fixed to the predetermined opening with a suitable adhesive, adhesive, or the like. In addition, when using a container with a lid, the amount of volatilization can be adjusted by changing the fitting relationship between the lid and the container, as in conventional fragrance containers.
Other volatilization control functions can also be added. (Example) To explain the structure of the air freshener container of the present invention in an example shown in the drawings, 1 is a cylindrical upper container (housing) with an open upper and lower part, and there are four containers on the upper side. openings 2 are provided, and a porous sheet 3 is fixed from the inside of each of the openings 2 by covering the openings 2 with an adhesive or the like. 4
is a lower container (casing) fitted (screwed) into the lower part of the upper container 1, which is sealed except for a part of the top plate 5, and contains a liquid blended fragrance 6 inside. be. The top plate portion 5 is provided with a flanged liquid suction wick insertion hole 7 which also serves as a liquid blended fragrance filling hole. Further, 8 is a liquid suction wick that is removably inserted into the flanged liquid suction wick insertion hole 7,
The upper end of the porous sheet 3 inside the upper container 1
The lower end thereof is immersed in the liquid flavor mixture 6 in the lower container 4.
Note that 10 is a pressure adjustment hole provided in the top plate portion 5 as necessary. Further, 11 is a lid that is removably fitted (screwed) to the upper part of the upper container 1, and is provided with an opening 12 corresponding to the opening 2 in the upper container 1. By changing the fit of the body 11 into the upper container 1, the amount of opening of the opening 2 can be adjusted and the amount of volatilization can be secondarily adjusted. For example, as shown in FIG. 2, when the opening 2 and the opening 12 are aligned, the opening amount can be maximized, and the opening amount can be set to 0 if necessary. Next, the effects of the fragrance container of the present invention will be explained by giving test examples. Test example 1 Limonene as the top note, benzine acetate as the middle note, α as the base note
- Methyl ionone was volatilized separately under the following [standard conditions for volatilization], and the results shown in the table below were obtained. * The volatilization control ability in the table below was calculated by the following formula from the measurement results under the following [Standard conditions for volatilization]. Volatilization control ability = (Volatilization amount during free volatilization) - (
Amount of volatilization through a porous sheet) / Amount of volatilization during free volatilization The amount of volatilization in the above formula is a value measured by the gravimetric method after each fragrance was allowed to stand for a period in which the weight difference could be measured.

[Table] From the results shown in the table above, it can be seen that the magnitude of volatilization control ability is top note>middle note>base note. In other words, it can be seen that the higher the vapor pressure of the perfume and the easier it is to volatilize, the more easily the volatilization through the porous sheet is suppressed. [Standard conditions for volatilization] Lower container 4 (cross-sectional area
Put ⁴⁰ c.c. of fragrance into a cylindrical filter paper (outer diameter 1 cm, height 6 cm) and place the above container 1 (height 6 cm, opening) in the lower container 4. (The part 2 has a total area of 20 cm ² and is covered with a porous sheet 3) was fitted thereinto, and then the lid body 11 was fitted to the upper container 1. This is done at a humidity of 70% and a temperature of 70% with openings 2 and 12 aligned.
Amount of volatilization after being left in a room at 25 degrees Celsius for a certain period of time with ventilation frequency of 60 times per hour (amount of volatilization through a porous sheet)
was measured. In addition, the amount of volatilization when volatilizing in the same manner with the lid 11 removed (the amount of volatilization during free volatilization) was also measured. The porous sheet 3 was made of polyethylene manufactured by Showa Denko Co., Ltd. containing 60% by weight of calcium carbonate as an inorganic filler, and stretched (biaxial stretching) to a film thickness of 100 μm.
A material with an average pore diameter of approximately 5 μm was used. As the material for the container, Burlex resin (manufactured by Mitsui Toatsu Co., Ltd.) with a thickness of 1 mm was used. Test Example 2 An orange-like liquid blended fragrance was volatilized under the standard conditions for volatilization in Test Example 1, and the strength and scent change over time was investigated. Even after 3 months of volatilization, the intensity was almost the same as at the beginning of volatilization. It showed a fragrant tone. In this case, the change in aroma intensity over time is as shown by the solid line in FIG. 3, and it can be seen that in the product of the present invention, the aroma intensity is maintained approximately constant over time. In addition, in FIG. 3, the vertical axis shows the relative volatilization amount, and the horizontal axis shows the elapsed time. In addition, as a control product 1, an air freshener container (from which the liquid suction wick 9 and the top plate part 5 were removed) that the present inventors had previously proposed in Japanese Patent Application No. 169024/1983 (Japanese Patent Application No. 48367/1983) was used. (Other than that, the same as shown in Figures 1 and 2) was volatilized under the standard volatilization conditions in Test Example 1, and the change in strength and scent tone over time was investigated. As with the product of the present invention, the product exhibited almost the same aroma tone as the initial stage of volatilization even after 3 months of volatilization, but the strength of the aroma changed over time compared to the product of the present invention, as shown by the broken line in Figure 3. There was a tendency for the value to decrease slightly. In addition, as a control product 2, a commercially available product (one that does not use a porous sheet or a liquid absorption wick) was volatilized under the standard volatilization conditions in Test Example 1, and the change in strength and scent over time was investigated. However, the tone of the fragrance changes significantly over time, and the intensity of the fragrance also changes significantly over time.
As shown by the dashed line in the figure, it decreased significantly over time. Test Example 3 A liquid blended fragrance was volatilized in the same manner as Test Example 2, except that various porous sheets made of polyethylene with different pore diameters (μm) and film thicknesses (μm) were used as the porous sheets. The presence or absence of changes in strength and aroma tone after a day was investigated. The results are shown in the table below.

【table】

[Table] From the results shown in the above table, it can be seen that the object of the present invention can be fully achieved only when a porous sheet having the pore size and film thickness of the present invention is used. Test Example 4 A liquid blended fragrance was volatilized in the same manner as Test Example 2, except that various porous sheets made of different materials shown in the table below were used as the porous sheets. As a result, the strength and aroma after 90 days of volatilization had hardly changed compared to the initial stage of volatilization. Note that some of the porous sheets shown in the table below have the average pore diameter and film thickness of the original sheet partially modified.

〔Effect of the invention〕

The fragrance container of the present invention is configured such that the liquid blended fragrance is volatilized inside the container through a liquid suction wick and then volatilized outside the container through a porous sheet with a specific pore size and film thickness. Flavors that have high vapor pressure and are easy to volatilize have a greater ability to control volatilization than fragrances that have low vapor pressure and are difficult to volatilize. Since the size of the fragrance (base note < middle note < top note) is maintained, the fragrance tone and intensity of the blended fragrance can be maintained approximately constant during use, and the liquid can be absorbed into the container via the liquid absorption wick. Since the liquid blended fragrance is volatilized inside, the above-mentioned effect of retaining the aroma at a constant intensity can be further improved.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the aromatic agent container of the present invention, and FIG. 2 is a longitudinal cross-sectional view showing its usage state.
FIG. 3 is a graph showing the change in aroma intensity over time. DESCRIPTION OF SYMBOLS 1... Upper container, 2... Opening part, 3... Porous sheet, 4... Lower container, 5... Top plate part, 6...
Liquid blended fragrance, 7...Liquid absorption wick insertion hole, 8...
Liquid suction core, 9...space in contact with porous sheet,
10... Pressure adjustment hole, 11... Lid, 12... Opening.

Claims (1)

[Claims] 1. A liquid preparation in which two or more fragrances with different evaporation pressures are mixed in a container whose volatilization port is covered with a porous sheet with a thickness of 10 to 1000 μm and numerous pores with pore diameters of 0.1 to 20 μm. A fragrance container containing a fragrance, characterized in that the liquid blended fragrance is volatilized into a space inside the container in contact with the porous sheet via a liquid suction wick. 2. The container consists of the container, a lid fitted to the upper part of the container, and a lower container fitted to the lower part of the upper container, and the upper container has an open upper and lower part. The lower container has an opening on its upper side and is covered with a porous sheet, the lid has an opening corresponding to the opening, and the lower container has an opening on its top plate. It has a closed type shape with a liquid suction wick insertion hole into which a liquid suction wick is removably inserted. Claim 1, wherein the wick is inserted into the liquid suction wick insertion hole with its upper end positioned in the upper container and its lower end immersed in the liquid blended fragrance in the lower container. Air freshener container as described in section.