JPH09253184A - Volatile chemical slow discharger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely prevent excessive discharge of chemicals to a vaporization body by temperature change in a volatile chemical slow discharger. SOLUTION: A volatile chemical slow discharger 1 is provided with an almost sealed fallen-shaped container 2 containing a liquid aroma agent A inside, and having a mouth part 2a directed downward, a vaporization sheet of paper 3 disposed under the mouth part 2a, and a supply core 4 having a liquid absorption property to supply a liquid aroma agent A to the vaporization sheet of paper 3. In this case, a pipe 10 is fitted in the container 2, an upper end of it is opened in an upper space 9 above a liquid surface, so that gas in the upper space 9 is introduced from an aperture 10a at the upper end to let it escape out of the container 2 in accordance with temperature change. The supply core 4 comprises a lifting part 4a to lift the liquid aroma agent A contained in the container 2 to the aperture 10a at the upper end of the pipe 10, and a supply part 4b to supply the liquid aroma agent A lifted from the lifting part 4a to the vaporization sheet of paper 3.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a volatile drug sustained release device.

[0002]

2. Description of the Related Art Conventionally, as a volatile drug sustained-release device, a substantially sealed container for accommodating a liquid drug and having a mouth portion facing downward, and a volatilizer disposed at a position below the mouth portion, It is known that the container has a liquid-absorbent supply core that supplies the drug in the container to the volatilizer through the mouth.

This type of sustained release device is generally called an inverted type, and like the upright type with its mouth facing upward,
It is widely used in general. As conventional examples of the inverted type sustained-release device, there are No. 1-93039 and No. 61-39.
No. 82637, No. 61-194536, No. 6
No. 1-194537, No. 61-194538, No. 56-6444, No. 63-135644, etc.

Usually, this type of inverted volatilizable drug sustained release device transfers the drug from the supply core located at the bottom of the container to the volatilizer located below the container. Compared to the upright type that sucks up the drug, the drug is better supplied to the volatilizer through the supply core and the air flow into the container is smoother as the drug decreases. Is excellent in.

[0005]

However, in the conventional inverted type volatile drug sustained-release device, as described above, while air can be easily introduced into the container, the gas (air Since it is difficult to discharge (evaporation amount of chemicals and chemicals), when the temperature rises in the summer and the atmospheric pressure in the upper space of the container rises, more chemicals than normal will be pushed by the gas in this upper space through the supply core. May be discharged to the volatilizer. In that case, there arises inconveniences such as a chemical such as an aromatic agent being diffused into the atmosphere more than necessary, and the consumption of the chemical is extremely fast. For this reason, there has been a strong demand for the development of a volatile drug sustained-release device that sufficiently considers the ambient temperature change.

The present invention has been made in view of the above-mentioned conventional problems, and provides a volatile drug sustained-release device for surely preventing excessive discharge of a drug to a volatile substance due to a change in ambient temperature. The purpose is to do.

[0007]

The present invention has the following configuration to achieve the above object. According to the invention of claim 1, a substantially sealed inverted container for containing a liquid drug therein and having a mouth portion facing downward, a volatilizer disposed below the mouth portion, and the container In a volatile drug sustained-release device provided with a liquid-absorbent supply core that supplies a drug to the volatile substance, in the container, an upper end is opened in an upper space above the liquid surface, and temperature changes Accordingly, a pipe is provided through which the gas in the upper space is guided to the mouth portion through the opening at the upper end and escapes to the outside of the container, and the supply core sucks the drug contained in the container into the opening at the upper end of the pipe. A volatile drug characterized by having a sucking-up part to be raised and a supply part for inserting the drug sucked from the sucking part into the volatile body while inserting the inside of the pipe and the mouth part. It is a sustained release device.

A second aspect of the invention is the volatile drug sustained-release device according to the first aspect, wherein the supply core is a porous sintered body made of a polyolefin resin.

A third aspect of the present invention is the volatile drug sustained-release device according to the first aspect, wherein the supply core comprises a capillary tube or a fiber bundle.

According to the present invention, when the temperature rises in summer and the atmospheric pressure in the upper space in the container rises, the gas (air and vaporized chemicals) in the upper space reaches the mouth through the pipe. It is guided and released to the outside of the container. This allows
The gas in the upper space is maintained at normal pressure without being affected by the ambient temperature change. Therefore, according to the present invention, it is possible to reliably prevent the excessive discharge of the drug to the volatilization body due to the temperature change.

Further, after the medicine in the container is sucked up into the opening at the upper end of the pipe by the suction portion of the supply core,
It is supplied to the volatilization body through the inside of the pipe by the supply unit, so that the drug is saturated inside the supply core and the volatilization body. Then, as the drug in the container is replenished to the supply unit by the suction unit according to the volatilization of the drug in the volatilizer, the drug in the container is gradually released into the atmosphere as in the conventional case.

The transportation path of the gas in the upper space in the pipe is different depending on the relationship between the inner shape of the pipe and the outer shape of the supply portion of the drug supply core, but the gas in the upper space is in the pipe. When the outer shape of the supply part is sufficiently small compared to the shape, it is mainly transported through the gap between the pipe and the supply part, while when the supply part is loaded in the pipe without any gap, it is mixed with the drug. It is transported in the supply section in a (gas-liquid mixed state).

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the volatile drug sustained-release device of the present invention is applied to a liquid fragrance sustained-release device.

(First Embodiment) As shown in FIGS. 1 and 2, a liquid fragrance sustained-release apparatus 1 of the first embodiment contains a liquid fragrance (an example of a liquid drug) A therein and Mouth part 2
Inverted container 2 in which a is directed downward, and volatilizing paper (corresponding to a volatilizer) disposed below the mouth 2a
3 and a supply core 4 having a liquid absorbing property for supplying the liquid fragrance A in the container 2 to the volatilization paper 3.

The liquid fragrance sustained-release device 1 also has a pedestal 5 having a volatilized paper 3 on its upper surface, and a cover 6 fitted around the pedestal 5 for supporting the container 2 and having a plurality of window holes 6a.
And the lower cap 7 screwed from below to the mouth 2a and fitted from above into the recess 6b at the center of the cover 6.
And an upper cap 8 fitted to the upper end of the container 2.

In the first embodiment, the upper end of the container 2 is opened in the upper space 9 above the liquid surface, and the gas in the upper space 9 is opened from the opening 10a at the upper end according to the temperature change. Pipe 10 that leads to 2a and escapes to the outside of container 2
Further, the supply wick 4 is provided with an opening 10a at the upper end of the pipe 10 for the liquid fragrance A contained in the container 2.
It has a wicking part 4a for wicking up and a supply part 4b for inserting the liquid fragrance A wicked by the wicking part 4a into the volatile paper 3 while inserting the inside of the pipe 10 and the mouth part 2a.

The configuration of each section will be described in detail below. As shown in FIG. 2, the container 2 is a synthetic resin molded product, and is procured by blow molding, for example. The mouth portion 2a of the container 2 is formed to have a smaller diameter than the body portion, and a male screw portion that is screwed into a female screw on the inner circumference of the lower cap 7 is provided on the outer circumference thereof. A circular hole 7a having a larger diameter than the supply portion 4b of the supply core 4 is formed in the center of the bottom portion of the lower cap 7.

The cover 6 is provided with a concave portion 6b which is open upward to accommodate the mouth portion 2a and the lower cap 7, and the lower cap 7 is provided at the center of the bottom portion of the concave portion 6b.
The circular hole 6b1 having a diameter larger than that of the circular hole 7a is formed. Further, a tapered slope 6b2 that expands upward is formed at the upper edge of the recess 6b.
A taper-shaped step portion 2b formed in the lower portion of the container 2 is supported by the container 2.

The pipe 10 is inserted into the container 2 from below the mouth portion 2a, and the opening 10a at the upper end thereof is located near the lower side of the upper wall of the container 2. At the lower end of the pipe 10, a flange portion 10b protruding laterally is formed. This flange portion 10b
The pipe 10 is fixed to the mouth portion 2a by being sandwiched between the bottom portion of the lower cap 7 and the lower end surface of the mouth portion 2a. In addition, a groove 10c that is open upward in the container 2 is formed at the lower end of the pipe 10 over the entire circumference.

As shown in FIGS. 2 and 3, the supply core 4 has a suction portion 4a and a supply portion 4b integrally formed. The suction part 4a is arranged along the up-down direction of the pipe 10
It is installed on the outer circumference of and has a lower end fitted and held in the groove 10c. As shown in FIG. 2, the supply portion 4b is inserted into the pipe 10 without any gap, and the lower end portion of the supply portion 4b is the circular hole 7 of each of the lower cap 7 and the recess 6b.
a and 6b1 are penetrated. The lower end of the supply unit 4b is in contact with the recess 3a provided at the center of the volatilization paper 3. The upper end of the supply core 4 is fixed to the opening 10a at the upper end of the pipe 10 by a cap 11 for fixing the supply core. The upper end of the supply core 4 is, as in the modified example shown in FIG.
It does not necessarily have to be fixed with a cap, and may have a large surface area such as a substantially cubic shape so as to absorb gas well.

As the supply core 4, a porous sintered body,
Examples include foam and pulp. When the porous sintered body and the foamed body are compared, the porous sintered body is preferable because the porosity can be easily adjusted.

The porous sintered body is prepared by sintering a thermoplastic resin powder. Examples of the thermoplastic resin include polyethylene, polypropylene, ethylene / butene-1 copolymer, ethylene / 4-methylpentene-1 copolymer, ethylene / vinyl acetate copolymer and other polyolefins, polystyrene, acrylonitrile / styrene copolymer. , Acrylonitrile / butadiene / styrene copolymer, polycarbonate, polymethylmethacrylate, polyamide, polyester, polyphenylene oxide, polyacrylonitrile, polyvinyl chloride, polyvinylidene chloride and the like. Among them, a polyolefin resin is desirable because it has excellent chemical resistance, does not cause dimensional change due to water absorption, does not cause strength reduction due to water absorption, and has sufficient strength as a sintered compact.

As shown in FIG. 2, the volatilized paper 3 is laid on the upper surface of the bottom of the pedestal 5 according to the inner shape of the pedestal 5. Examples of the volatilization paper 3 include porous materials such as porous sintered bodies and foams, filter papers, and the like, but are not particularly limited as long as they have liquid absorbability.

According to the first embodiment having the above structure, the following actions and effects can be obtained. The liquid fragrance A in the container 2 is sucked up by the suction part 4a of the supply core 4 into the opening 10a at the upper end of the pipe 10, and then the supply part 4b.
Is supplied to the volatile paper 3 through the pipe 10. As a result, the liquid fragrance A is saturated inside the supply core 4 and the volatile paper 3. And the liquid fragrance A in the volatilization paper 3
The liquid fragrance A in the container 2 is sucked up according to the volatilization of the
The container 2 is replenished at any time by the supply unit 4b.
The liquid fragrance A therein is gradually discharged into the atmosphere through the window 6a of the cover 6 as in the conventional case.

When the atmospheric pressure of the upper space 9 in the container 2 rises due to a rise in temperature, the gas (air and vaporized fragrance) in the upper space 9 enters the suction portion 4a, While being guided by the pipe 10, in a state of being mixed with the liquid fragrance A, it is guided to the lower end of the supply unit 4b through the inside of the supply unit 4b. The gas transported to the lower end of the supply unit 4b is
It is discharged into the atmosphere through the gap between the bottom of the concave portion 6b of the cover 6 and the volatile paper 3 or the inside of the volatile paper 3. As a result, the gas in the upper space 9 is kept at normal pressure without being affected by the ambient temperature change. Therefore, according to the first embodiment, it is possible to reliably prevent the excessive discharge of the liquid aromatic agent A to the volatilization paper 3 due to the temperature change.

Further, according to the first embodiment, the pipe 10
Since the supply portion 4b is inserted without a gap, even when the container 2 is turned upside down or greatly shaken, the liquid fragrance A can be prevented from leaking outside through the pipe 10 as it is.

(Second Embodiment) Next, the liquid fragrance sustained-release device of the second embodiment will be described. In addition, about the same structure as the liquid fragrance | flavor extended release device of 1st Embodiment, the same code | symbol as 1st Embodiment is attached | subjected and description is abbreviate | omitted.

The liquid fragrance sustained-release device 12 of the second embodiment is
As shown in FIGS. 5 and 6, in the basic configuration of the first embodiment, a pair of left and right ribs 13a are formed on the outer peripheral surface of the pipe 13 along the left and right side surfaces of the suction portion 4a of the supply core 4. Is. In this case, the lower end portion of the pipe 13 is not provided with the groove of the first embodiment, and the suction portion 4a is held by the pair of left and right ribs 13a. Further, the cap 14 for fixing the supply core fitted in the opening 13b at the upper end of the pipe 13 is provided with a notch 14a for allowing the rib 13a to escape.

According to the second embodiment, the same action and effect as the first embodiment can be obtained, and at the same time, the remarkable effect that the suction portion 4a of the supply core 4 can be held more stably is obtained. To be

(Third Embodiment) Next, a third embodiment will be described. In addition, about the same structure as the liquid fragrance | flavor extended release device of 1st Embodiment and 2nd Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

The liquid fragrance sustained-release device 15 of the third embodiment is
As shown in FIGS. 7 and 8, the supply core 16 is made of a fiber bundle. This fiber bundle is a string-shaped bundle formed by twisting synthetic fibers or natural fibers, and is not particularly limited as long as it is a string-shaped bundle. About half of the supply core 16 hangs from the opening 17a at the upper end of the pipe 17 to the periphery of the lower end of the pipe 17 on the outside of the pipe 17 to form a suction portion 16a, and the other half of the supply core 16 is at the upper end of the pipe 17. It is inserted into the pipe 17 through the opening 17a and the lower end thereof is brought into contact with the upper surface of the volatilization paper 3 to form a supply unit 16b. In this case, the inner diameter of the pipe 17 is 0.5 to 10
It is desirable to appropriately set the thickness in the range of mm depending on the thickness and material of the supply core 16. Further, by setting the circular hole 18a of the lower cap 18 to a size substantially the same as the outer diameter of the supply core 16, the liquid fragrance A leaks to the outside of the container 2 even when the container 2 is inverted. To prevent. Further, it is preferable that both ends of the supply core 16 are fixed to the lower end of the pipe 17 or the upper surface of the volatilization paper 3 by adhering.

According to the third embodiment having such a configuration, when the atmospheric pressure in the upper space 9 in the container 2 increases, the gas in the upper space 9 is mainly blown around the supply portion 16b to the body of the pipe 17. It is guided to the lower end portion of the pipe 17 via, and then enters the lower end portion of the supply portion 16b and is discharged to the outside of the container 2 together with the liquid fragrance A. As a result, the gas in the upper space 9 is maintained at the normal pressure without being affected by the temperature change, as in the first and second embodiments. Therefore,
According to the third embodiment, the inexpensive supply core 16 using the fiber bundle makes it possible to obtain the same operation and effect as those of the first and second embodiments.

In the third embodiment, one or more capillaries (for example, a pipe having a thin inner hole or a hollow fiber) can be used instead of the supply core 16 of the fiber bundle, and even in that case, it is comparatively possible. The supply core according to the present invention can be constructed at low cost.

The liquid fragrance A used in the liquid fragrance sustained release devices 1, 12, 15 of the first to third embodiments is not particularly limited, and is mainly a fragrance, a surfactant, a solvent and It is obtained by mixing water in an appropriate composition ratio.
In addition, when preparing the liquid fragrance | flavor A with the said component, you may mix | blend arbitrary components as needed. Examples of the optional components include dyes, ultraviolet absorbers, deodorants, preservatives and the like.

As described above, the fragrance used in the preparation of the liquid fragrance A is not particularly limited and can be appropriately selected from natural fragrances and synthetic fragrances. As the natural fragrance, for example, orange oil, lemon oil, lime oil, petitgrain oil, yuzu oil, neroli oil, bergamot oil, lavender oil, lavandin oil, abies oil, bay oil, poad rose oil, ylang ylang oil, citronella oil,
Geranium oil, peppermint oil, peppermint oil, spearmint oil, eucalyptus oil, lemongrass oil, patchouli oil, jasmine oil, rose oil, cedar oil, vetiver oil, carbam oil, oak moss oil, pine oil, camphor oil, white dough oil, Essential oils such as scented oil, turpentine oil, clove oil, clove leaf oil, cassia oil, nutmeg oil, cananga oil, thyme oil, and animal flavors such as musk, spirit cat scent, raccoon scent, and spear scent.

Examples of synthetic fragrances include linalool, linalyl acetate, geraniol, citronellol, C _{4 to} C ₁₂ various aliphatic aldehydes, phenylethyl alcohol, benzyl acetate, geranyl acetate, geranyl formate, vanillin, nitromusks, Galaxolid, tonalide, phantolide, Santarex, amyl salicylate, amyl acetate, γ-
Undecalactone, ethyl methylphenylglycidate,
Heliotropin etc. are mentioned. These fragrances may be used alone or as a mixed fragrance prepared by mixing two or more kinds.

Surfactants are roughly classified into nonionic surfactants, anionic surfactants and cationic surfactants. Nonionic surfactants include polyoxyethylene alkyl ether and polyoxyethylene. Alkyl phenyl ether, polyoxyethylene fatty acid ester, polyoxyethylene hydrogenated castor oil, and the like, and particularly, the average addition mole number of ethylene oxide is 1 to 30, preferably 5 to 2.
The polyoxyethylene-based nonionic surfactant of 5 can be preferably used. Also, alkylamine oxide and the like can be used. Examples of the anionic surfactant include alkyl sulfate, alkylbenzene sulfonate, polyoxyethylene alkyl ether sulfate, polyoxyethylene alkylphenyl ether sulfate, polyoxyethylene alkylphenyl ether sulfonate, and the like. Oxyethylene alkylphenyl ether sulfate and polyoxyethylene alkylphenyl ether sulfonate are preferable. Further, examples of the cationic surfactant include alkyl trimethyl ammonium salt and polyoxyethylene alkyl trimethyl ammonium salt. These surfactants may be used alone or in combination of two or more kinds.

Finally, as the solvent, ethanol, propanol, ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, dipropylene glycol, ethylene glycol monoethyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, dipropylene. Examples include glycol monomethyl ether, dipropylene glycol monoethyl ether, 3-methoxy-3-methylbutanol, isoparaffin, dipentene and the like.

[0039]

EXAMPLES Next, the liquid fragrance A to be filled in the liquid fragrance sustained release devices 1, 12 and 15 of the present embodiment was mixed and prepared in various composition ratios as described below according to the examples. (Example 1) Perfume 2% by weight Polyoxyethylene alkyl ether 2 Polyoxyethylene hydrogenated castor oil 1 Ethanol 5 BHT trace Yellow No. 1 trace water balance Total 100

[0040] (Example 2) Perfume 1 wt% alkylphenol ethoxylate 1.5 Sodium alkyl benzene sulfonate 0.5 Ethanol 3 dihydroxybenzophenone trace Green No. 201 trace water Balance Total 100.0

[0041] (Example 3) Perfume 10 wt% ethanol 20 3-methoxy 3-methyl-butanol 40 BHT trace Green No. 201 trace water balance Total 100

(Example 4) Fragrance 6% by weight Propylene glycol 10 Isoparaffin 40 BHT Trace amount Red No. 106 Trace amount 3-Methoxy-3-methylbutanol Total residual amount 100

The liquid fragrances obtained in Examples 1 to 4 were filled in liquid fragrance sustained release devices 1, 12 and 15 which are embodiments of the volatile drug sustained release device according to the present invention, and the changes over time were performed. As a result of observation, it was confirmed that the temperature decreased by a certain amount at every predetermined time without being affected by the temperature change around the container 2.

[0044]

As described above, according to the present invention, in the volatile drug sustained-release device, it is possible to reliably prevent the excessive drug from being discharged to the volatile substance due to the temperature change.

[Brief description of drawings]

FIG. 1 is a perspective view of a liquid fragrance sustained-release device according to a first embodiment.

FIG. 2 is a vertical cross-sectional view of the liquid fragrance sustained releaser according to the first embodiment.

FIG. 3 is a perspective view of a pipe and a supply core according to the first embodiment.

FIG. 4 is a perspective view of a supply core upper portion according to a modified example of the first embodiment.

FIG. 5 is a vertical cross-sectional view of a liquid fragrance sustained-release device according to a second embodiment.

FIG. 6 is a perspective view of a pipe and a supply core according to a second embodiment.

FIG. 7 is a vertical cross-sectional view of a liquid fragrance sustained releaser according to a third embodiment.

FIG. 8 is a perspective view of a pipe and a supply core according to a third embodiment.

[Explanation of symbols]

 1 Liquid fragrance sustained release device (an example of a volatile drug sustained release device) 2 Container 2a Mouth part 3 Volatile paper (corresponding to a volatilization body) 4 Supply core 4a Suction part 4b Supply part 9 Upper space 10 Pipe 10a Upper end opening 12 Liquid Air Freshener Sustained Release Device 13 Pipe 13b Top Opening 15 Liquid Air Freshener Sustained Release Device 16 Supply Core 16a Suction Part 16b Supply Portion 17 Pipe 17a Upper End Opening A Liquid Air Freshener

Claims (3)

[Claims] 1. A substantially sealed inverted container for containing a liquid medicine therein and having a mouth portion facing downward, a volatilizer disposed below the mouth portion, and a medicine in the container. In a volatile drug sustained-release device provided with a supply core having a liquid absorbing property to supply to the volatile material, in the container, an upper end is opened in an upper space above the liquid surface, and depending on a temperature change. A pipe is provided through which the gas in the upper space is guided to the mouth portion through the opening at the upper end and escapes to the outside of the container, and the supply core sucks up the drug contained in the container to the opening at the upper end of the pipe. Sustained release of a volatile drug characterized by having a lifting part and a supply part which is inserted through the pipe and the mouth part and supplies the drug absorbed by the suction part to the volatilizer. vessel. 2. The volatile drug sustained-release device according to claim 1, wherein the supply core is a porous sintered body made of a polyolefin resin. 3. The volatile drug sustained-release device according to claim 1, wherein the supply core comprises a capillary tube or a fiber bundle.