JPS6253660A - Container of substance evaporated at ambient temperature - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial field of application] Containers for containing chemical substances for the purpose of releasing aromatic ingredients into the atmosphere, insect repellent and deodorizing, air freshener devices and insect repellents using the same. Concerning containers and deodorizers.

[Conventional technology]

Conventional air fresheners, which are designed to emit the scent of flowers, fruits, etc. into a room, contain a solidified fragrance such as vegetable essential oil in a paper or plastic container, and when used, the container is removed. There are those that open the package and vaporize the aromatic agent and release the aromatic components slowly into the atmosphere, or those that dissolve the aromatic agent in a volatile liquid and volatilize the solution and diffuse it into the atmosphere. Solid type air fresheners have a part of the container opened, so
Since the fragrance is in direct communication with the atmosphere, as the fragrance evaporates and becomes smaller, its surface area decreases, and the concentration of the fragrance component released into the atmosphere gradually decreases.
At the beginning of use, it had a strong scent, but the scent gradually became weaker.

For this reason, the shape of conventional solid air fresheners is devised so that the strength of the fragrance remains constant from the beginning of use to the end of use. By opening the top end of the cylindrical container and keeping the surface where the aromatic agent comes into contact with the atmosphere constant, the strength of the aroma is kept constant.

On the other hand, in the case of solution-type air fresheners, a volatile liquid is stored in a container, a wick such as a sponge is placed in the container, and the liquid absorbed by the wick by capillary action is vaporized in the evaporation section at the top. It was something.

Recently, as disclosed in Japanese Patent Application Laid-open No. 59-19534, a part of the container may be covered with an air-permeable, liquid-impermeable microporous sheet or film by means such as fusion bonding, clamping, etc. There are sealed containers, or bags made of microporous sheets or films in which a volatile liquid is stored. There is also an improved version in which the components vaporized in the container are diffused into the atmosphere through a microporous sheet or film, and the liquid in the container is prevented from leaking.

In addition, in conventional insect repellent containers for insect repellent, if the insect repellent is a solid type such as naphthalene, the insect repellent is placed in a plastic film packaging material, and a part of the packaging is opened when using it. They were housed in paper, porous sheet packaging materials such as paper or nonwoven fabric, or plastic moldings with many small openings.

Furthermore, conventional deodorizers aimed at deodorizing closets, shoe cabinets, basements, storerooms, kitchen storage, refrigerators, etc.
Similar to the fragrance device described above, a volatile solution is contained in a container.

[Problems solved by the invention]

Conventional solid air fresheners have the disadvantage that as they evaporate, their shape changes and the surface area in contact with the atmosphere changes, making it impossible to maintain a constant scent intensity, and furthermore, their shape is limited. It had

Items stored in packaging materials such as paper and non-woven fabrics are easily torn, and small pieces of insect repellent adhere to clothing through the many openings, causing stains.

Similar to the above-mentioned air fresheners, insect repellent solutions have the disadvantage that if the container is accidentally tipped over during handling, the solution stored in the container may leak and be lost or cause stains. However, it can also be dangerous if it contains harmful ingredients.

In the case of solution-type fragrances, the opening of the container is a porous material with a large pore diameter that can utilize capillary action, such as a sponge, so if the container falls over due to carelessness during handling, There was a drawback that the solution stored in the container leaked and was lost or caused stains.

Also, if the container falls over due to carelessness during handling,
There was a drawback that the solution stored in the container leaked and was lost or caused stains.

In addition, in cases where an air-permeable, liquid-impermeable microporous sheet or film is used for a part or the whole of the container disclosed in JP-A-59-19534, the sheet or film has a volume of Since it is obtained by uniaxially or biaxially stretching at a stretching ratio of 50 to 500%, the thickness can only be a few 100 μm at most, so the strength of that part is weak and there is a high risk of leakage. A protective body is required, which increases the number of steps and parts, making manufacturing complicated and costly. Furthermore, since the above-mentioned stretching method is used to obtain micropores, only sheet-like objects can be produced, making it difficult to produce three-dimensional structures.

[Means for solving problems]

Hole diameter communicating from one side to the other 0.01~10μm
A sublimable or vaporizable substance is placed in a container made of a thermoplastic resin having at least a portion of micropores to obtain an air freshener device, an insect repellent device, and a deodorant device that solve the conventional problems.

[Effect]

The container in which the present invention is capable of gradually releasing a chemical substance in a gaseous state has a pore diameter of 0.00 mm that communicates from one side to the other side.
It is made of thermoplastic resin having micropores of 01 to 10 μm, and the manufacturing method is disclosed in Japanese Patent Application No. 60-1295 by the present inventor.
As detailed in No. 27, polyolefins,
A uniform resin composition made of at least one resin selected from polyamide and polyvinyl chloride resin, preferably polypropylene and liquid paraffin, is formed by injection molding or blow molding, and then the molding is performed. It is obtained by extracting and removing liquid paraffin at room temperature with a halogenated hydrocarbon such as Freon. By storing volatile substances in the container obtained in this way,
An air freshener device, an insect repellent device, and a deodorant device of the present invention are obtained.

FIG. 1 shows a structure in which a container capable of gradually releasing the chemical substance of the present invention in a gaseous state is applied to an air freshener device 1). The air freshener device 1) includes a lid body 12, a container part 13, and an air freshener 1.
Consists of 4. 1 lid 12 or/and container part 13
is molded from a thermoplastic resin having micropores communicating from one side to the other. The fragrance 14 is a solid fragrance made by solidifying vegetable essential oil or the like. The aromatic components vaporized from the solid aromatic agent fill the container portion 13, increasing the concentration. Due to the difference in concentration between the aroma components in the container section 13 and the atmosphere, the aroma components diffuse through the micropores, supplying the aroma into the atmosphere. The concentration of the aromatic component in the container part 13 can be maintained at a constant concentration until the aromatic agent is completely exhausted, and the speed at which the aromatic component is diffused through the micropores and released into the atmosphere is constant. The inventive air freshener device is
A constant fragrance can be supplied from the time of use to the end.

Moreover, if a solid insect repellent such as naphthalene is stored in place of the aromatic agent 14 shown in FIG. 1, an insect repellent container can be provided. Although the sublimated gaseous components of the insect repellent pass through the fine pores, small pieces of the insect repellent do not pass through, so the insect repellent does not directly adhere to clothing, etc., and problems such as stains can be prevented.

Next, another application example of the present invention is shown in FIG. Air freshener device 21
Lid body 22, container part 23, fragrance 24.0-ring 25
It consists of The lid body 22 and/or the container part 23 have a hole diameter of 0.01 to 0.01 that communicates from one side to the other.
It is molded from hydrophobic thermoplastic resin with micropores of 10 μm. The method used to measure the pore size is to use polystyrene latex with a uniform particle size (Dow Chemical Company "Uniform Latex Vertecles") with a solid content concentration of 0.1.
A solution diluted to wt% is passed through at 100 mA, and the capture efficiency is determined from the formula below.

CP The capture efficiency is determined from the latex concentration of the liquid that has passed through the porous body and the particle size is small, and the particle size when this value reaches 100% for the first time is taken as the pore size of the molded product. The lid body 22 and the container part 23 are fluid-tightly fitted by an O-ring 25.

The fragrance 24 is a solution, and is a solution obtained by dissolving an existing fragrance in water or a mixed solvent of water and a solvent such as acetone, methanol, or ethanol. The volatilized fragrance is removed from the lid body 22 or/
Then, it is supplied into the atmosphere through the fine holes of the container part 23. However, since the aromatic agent 24 in the solution does not pass through the micropores, it never leaks out of the container.

Further, instead of the fragrance 24 shown in FIG. 2, it is possible to provide an insect repellent container containing a pyrethroid insecticide, an organophosphorus insecticide, a synthetic carbamine oxygen insecticide, or the like. Furthermore, a deodorizer device can be provided by storing a vegetable essential oil or the like that decomposes odor components instead of the aromatic agent 24.

These solutions are volatile, and the gaseous components are supplied into the atmosphere through the fine pores of the lid 22 and/or the container part 23. However, since the solution does not pass through the micropores, it will not leak out of the container.

The air freshener device, insect repellent device, and deodorizer device of the present invention are gas barrier devices.
Supplied in sealed packaging using highly durable packaging material. By sealing the container with a packaging material with high gas barrier properties, it is possible to prevent the aromatic agent, insect repellent, and deodorant in the container from vaporizing or sublimating and diffusing into the atmosphere until the time of use. By opening this package, it can be used immediately as an air freshener device, an insect repellent device, or a deodorant device. Examples of this packaging material include ethylene vinyl alcohol film and laminate film having an aluminum layer. Further, thick films such as polyethylene, polypropylene, polyester, nylon, polyurethane, etc. can also be used.

〔Example〕

Example 1 A container with an internal volume of 150 m1 and a matching lid were formed by injection molding using a uniform resin composition consisting of polypropylene and liquid paraffin, and then the liquid paraffin was extracted and removed using Freon at room temperature.

The average pore diameter of the micropores in the resulting container and lid was 2 μm.

Comparative Example 1 A solidified vegetable fragrance similar to that in Example 1 was stored in a polypropylene container with an internal volume of 150 ml,
The top of the container was left open. The scent only lasted for about two months, and after two months, the scent could be faintly discerned by bringing one's nose close to the fragrance.

Example 2 A container with an internal volume of 150 mJ made of a uniform resin composition consisting of polypropylene and liquid paraffin and a matching lid were formed by injection molding, and then the lid and the upper half of the container were molded with Freon at room temperature. The liquid paraffin was extracted and removed.

The average pore diameter of the micropores in the resulting container and lid was 1 μm.

〔effect〕

When the solidified vegetable fragrance was stored in the container of Example 1 and the lid was fitted, the scent lasted for about 3 months, and the scent remained from the beginning to the end of use. The strength was almost the same.

90m of vegetable fragrance dissolved in 80% ethanol in the container of Example 2! When I put it in, the scent lasted for about 3 months.

The container for substances that vaporize at room temperature and the air freshener, insect repellent, and deodorant devices using the same according to the present invention have the following characteristics.
have an effect.

1. A constant amount of volatile components can be supplied to the atmosphere from the beginning to the end of use.

2. Volatile substances inside the container do not leak, so problems such as stains do not occur.

3. Complex shapes can be easily produced by injection molding and blow molding, making it easy to increase commercial value.

[Brief explanation of drawings]

FIG. 1 is a diagram in which the present invention is applied to an air freshener device. FIG. 2 is a diagram showing another embodiment of the present invention.

Claims (6)

[Claims] (1) A container made of a thermoplastic resin that contains a sublimable or vaporizable substance inside and has at least a portion of micropores that communicate from one side to the other. (2) The container according to claim (1), wherein the micropores are present on the entire surface of the container. (3) Claims (1) or (2) containing a vaporizable substance and characterized in that the thermoplastic resin is hydrophobic.
). (4) In any one of claims (1) to (3), wherein the vaporizable substance is at least one of a fragrance, an insect repellent, and a deodorant. Container as described. (5) The container according to claim (1) or (2), wherein the sublimable substance is at least one of a fragrance, an insect repellent, and a deodorant. (6) The container according to any one of claims (1) to (5), which is hermetically packaged with a packaging material having high gas barrier properties.