WO2022260020A1 - 倒立型揮散装置における液体製剤の貯留容器への液戻り量を調整する方法及び倒立型揮散装置 - Google Patents
倒立型揮散装置における液体製剤の貯留容器への液戻り量を調整する方法及び倒立型揮散装置 Download PDFInfo
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- YFNKIDBQEZZDLK-UHFFFAOYSA-N triglyme Chemical compound COCCOCCOCCOC YFNKIDBQEZZDLK-UHFFFAOYSA-N 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- MWOOGOJBHIARFG-UHFFFAOYSA-N vanillin Chemical compound COC1=CC(C=O)=CC=C1O MWOOGOJBHIARFG-UHFFFAOYSA-N 0.000 description 1
- FGQOOHJZONJGDT-UHFFFAOYSA-N vanillin Natural products COC1=CC(O)=CC(C=O)=C1 FGQOOHJZONJGDT-UHFFFAOYSA-N 0.000 description 1
- 235000012141 vanillin Nutrition 0.000 description 1
- 229940117960 vanillin Drugs 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M1/00—Stationary means for catching or killing insects
- A01M1/20—Poisoning, narcotising, or burning insects
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
- A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
- A61L9/12—Apparatus, e.g. holders, therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D83/00—Containers or packages with special means for dispensing contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
Definitions
- the present invention relates to technology in an inverted volatilization device that stores a liquid formulation and volatilizes and diffuses active ingredients such as aromatic ingredients and deodorant ingredients contained in the liquid formulation into a space such as a room.
- volatilization device As a volatilization device provided with a volatilization carrier (hereinafter referred to as a volatilization body), a so-called inverted volatilization device having a volatilization body below a storage container containing a liquid formulation is known.
- a liquid-absorbing material is provided below the storage container, and a liquid formulation containing an active ingredient such as an aromatic component is supplied to the volatilization body through the liquid-absorbing material to impregnate it, thereby effectively It is configured to volatilize the components.
- an inverted volatilization device when the gas in the head space in the upper part of the storage container containing the liquid formulation expands due to the temperature rise of the environment surrounding the inverted volatilization device, the liquid formulation inside the storage container expands. Excess liquid may leak through the absorbent material. The amount of liquid that exceeds the liquid retention capacity of the volatilizer is stored in the lower container, but if the inverted volatilization device is moved in that state, the liquid formulation will leak from the volatilization opening of the lower vessel, and the liquid formulation will be wasted. Moreover, there is a problem that the floor surface or the like is contaminated. In addition, the larger the headspace volume, the greater the amount of excess liquid that flows out due to temperature rise or the like.
- Patent Document 1 a storage container containing a liquid formulation, a lower container assembled to the lower portion of the storage container, and the lower container so as to be sandwiched between the lower portion of the storage container and the lower container and a volatilization body to which the liquid formulation in the storage container is supplied, wherein the lower container is formed with a liquid pool chamber arranged below the volatilization body, and the volatilization body is the liquid pool
- An inverted volatilization device has been proposed that has a liquid absorption part that returns the liquid formulation accumulated in the chamber to the volatilization body.
- the liquid formulation is temporarily stored in the liquid pool chamber, and the liquid formulation is stored in the liquid pool.
- the liquid formulation can be returned to the volatilization body without remaining pooled in the chamber.
- the present invention is to adjust the liquid return amount of the liquid formulation to the storage container in the inverted volatilization device, and even if the liquid formulation is supplied from the storage container beyond the liquid holding capacity of the volatilization body, the liquid formulation is wasted.
- An object of the present invention is to provide an inverted volatilization device that can be used up without any waste.
- the inventor focused on the liquid-absorbing material that supplies the liquid preparation to the volatilization body. Then, the present inventors have found that the amount of the liquid preparation that flows out of the storage container and returns to the storage container varies depending on the fiber diameter of the fibers that constitute the liquid-absorbing material, and have completed the present invention.
- the present invention is achieved by the following (1) to (3).
- (1) A method of adjusting the amount of the liquid preparation returned from the storage container to the storage container of an inverted volatilization device having a volatilization body below the storage container containing the liquid preparation,
- the storage container has a liquid-absorbing material below it in a state in which at least a part of the liquid-absorbing material is exposed to the outside of the storage container, the liquid-absorbing material is in contact with the volatilization body, and the liquid-absorbing material is formed including fibers, and the fiber diameter of the fibers is adjusted to adjust the amount of the liquid preparation returned to the storage container.
- the exposed part of the absorbent material is brought into contact with a storage container having an absorbent material at the bottom, at least a part of which is exposed to the outside of the container, and in which the liquid preparation is accommodated. and a volatilization body, wherein the liquid absorbing material contains fibers having a fiber diameter of 6 denier or more.
- the fiber diameter of the fibers constituting the absorbent material is adjusted to adjust the amount of liquid returned to the storage container, so the absorbent material can be designed according to the liquid retention capacity of the volatilization material.
- the inverted volatilization device of the present invention can efficiently return the liquid formulation supplied from the storage container to the storage container through the liquid absorbent material, the surrounding area is contaminated by excess liquid formulation. problem can be avoided and the liquid preparation can be used up without waste.
- the liquid formulation can be efficiently retained in the volatilization body regardless of the usage environment such as the shape and size of the storage container or lower container, the type of liquid formulation, viscosity or amount used, and temperature. It is possible to volatilize the active ingredient in a stable manner.
- FIG. 1 is an external perspective view showing an embodiment of an inverted volatilization device of the present invention.
- 2 is a longitudinal sectional view of the inverted volatilization device shown in FIG. 1.
- FIG. FIG. 3 is a single plan view of a volatilization body used in the inverted volatilization device shown in FIG.
- FIG. 4 is a vertical cross-sectional view of an inverted volatilization device used in a test for confirming the amount of liquid returned to a storage container of a liquid formulation.
- the method of adjusting the amount of liquid returned to the storage container of the liquid formulation in the inverted volatilization device of the present invention is an inverted volatilization device equipped with a volatilization body below the storage container containing the liquid formulation.
- a method for adjusting the amount of liquid returned to a storage container of a liquid preparation wherein a liquid-absorbing material is provided below the storage device with at least a portion thereof exposed to the outside of the storage container, and is in contact with the volatilizing body, It is formed by including fibers, and the fiber diameter of the fibers is adjusted to adjust the amount of liquid returned to the storage container of the liquid preparation.
- the inverted volatilization device 10 of the present invention includes a storage container 11 containing a liquid formulation 13 therein, and an active ingredient contained in the liquid formulation 13 impregnated with the liquid formulation 13. and volatilization body 22 to volatilize.
- a part of the absorbent material 19 is exposed to the outside of the storage container 11 , and the exposed part of the absorbent material 19 is in contact with the volatilization body 22 .
- the liquid preparation 13 is supplied to the volatilization body 22 via the liquid absorbent material 19 by gravity, and the active ingredient volatilizes from the volatilization body 22 .
- the inverted volatilization device 10 further includes a lower container 12, the lower container 12 is assembled to the lower portion of the storage container 11, and the storage container 11 and the volatilization body 22 are separated by the lower container 12. Supported.
- Liquid does not substantially leak from the wall surface of the storage container 11 .
- a material for forming the storage container 11 one or more of plastic, paper, metal, ceramic, glass, and the like can be used as long as the liquid preparation 13 does not leak. Further, when forming the storage container 11, the above materials may be mixed with a pigment, an ultraviolet absorber (blocking material), patterned, or a luminous material, light scattering material, glitter, etc. may be added. good.
- Active ingredients (fragrant ingredients, deodorant ingredients, etc.) contained in the liquid preparation 13 include, for example, green tea extracts (e.g., catechins, tannins, polyphenols, etc.), grapefruit extracts, persimmon extracts, perilla extracts, mushroom extracts, Plant extracts such as bamboo extract, champignon extract, natto extract, pyrethrum extract (other than these, extracts obtained from camellia, rose, chrysanthemum, pine, cedar, plantain, etc.), peppermint oil, peppermint oil, Eucalyptus oil, tea tree oil, lavender oil, rosemary oil, bergamot oil, rosewood, litce acuba, marjoram oil, spearmint oil, chamomile oil, mugwort oil, pine oil, star anise oil, ⁇ -pinene, green leaf alcohol, Green leaf aldehyde, geraniol, sabinene, linalool, terpineol, raspberry ketone, cum
- Phytoncide can also be used as the active ingredient contained in the liquid preparation 13.
- the phytoncides include those obtained from the leaves, flowers, roots and wood of the following trees.
- Sakhalin fir, Ezo spruce, Shirabe, Pumice pine, Red spruce, Spruce, Fir, Tsuga Pinaceae such as , strobed pine, blue spruce, Himalayan cedar, Japanese larch, red pine, larch, Japanese red pine, Ginkgo biloba such as Ginkgo biloba, Polygonum such as dogwood, Cedar family such as Japanese cedar, Chinese fir tree, Chinese fir tree, etc.
- Lauraceae such as Camphor tree, Tabunoki, Japanese cinnamon, Shirodamo, Shiromoji, etc.
- Saxifrage family such as Noriutsugi
- Rutaceae such as Miyama and Japanese pepper
- Shikimi family
- Shikimi family
- Ericaceae such as Japanese juniper
- Sawtooth oak White oak
- Fagaceae such as Sudajii, etc., etc.
- leaf oils wood oils, 4-terpineol, ⁇ -pinene, limonene, sabinene, ⁇ -terpinene, eremoll, ⁇ -terpinyl acetate, cis-thujone, fenchone, bornyl acetate, camphene, ⁇ -phellandrene, geranyl acetate, germacrene D, ⁇ -element, (+)-camphor, caryophyllene, 1,8-cineole, ⁇ -terpineol, ⁇ -cadinene, ⁇ -eudesmol, ⁇ -mulorene, cryptomeliol, cryptomeri Diol, terpineol, delta-casinol, T-muurolol, tujopsene, cedrol, widrol, carvacrol, hinokitiol, safrole, linalool, cedrene, phylloc
- the above active ingredients can be used alone or in combination of two or more in order to obtain the desired effects, and specific effects include fragrance, deodorant, sterilization, antibacterial, antifungal, and antiseptic. , sterilization, insecticidal, insect repellent, insect repellent, egg killing, egg laying inhibition, repelling pests and vermin, expulsion or colonization inhibition, tranquillization, pain relief, cooling, antihistamine effect, anti-allergic, anti-ear, nose and throat diseases, Anti-sleep apnea syndrome, drowsiness awakening, dieting, etc. can be mentioned, and the active ingredient may have multiple effects as described above.
- plant essential oils such as peppermint oil, eucalyptus oil, citronella oil, lavender oil, chamomile oil, grapefruit oil, mugwort oil, pine oil, tea tree oil, and star anise oil are combined or combined.
- plant essential oils such as peppermint oil, eucalyptus oil, citronella oil, lavender oil, chamomile oil, grapefruit oil, mugwort oil, pine oil, tea tree oil, and star anise oil are combined or combined.
- active ingredients contained in the liquid preparation 13 include disinfecting ingredients such as isopropylmethylphenol, cetylpyridinium chloride, and phenoxyethanol, bactericidal ingredients, antibacterial ingredients, antifungal ingredients, insecticidal ingredients such as pyrethroid compounds, and insecticides.
- disinfecting ingredients such as isopropylmethylphenol, cetylpyridinium chloride, and phenoxyethanol
- bactericidal ingredients antibacterial ingredients
- antifungal ingredients such as pyrethroid compounds
- insecticidal ingredients such as pyrethroid compounds
- insecticides such as pyrethroid compounds
- the content of the active ingredient in the liquid formulation 13 can generally be arbitrarily selected within the range of 0.01 to 100% by mass relative to the total mass of the liquid formulation 13.
- the content of the active ingredient in the liquid preparation is preferably 0.01 to 50% by mass, more preferably 0.01 to 20% by mass, still more preferably 0.01 to 15% by mass, particularly preferably 0.1 to 15% by mass.
- the liquid preparation 13 may contain an appropriate amount of solvent.
- solvents include water, alcohol solvents, hydrocarbon solvents, glycol ether solvents, aromatic solvents, ester solvents and the like.
- water include purified water, ion-exchanged water, distilled water, filtered water, and sterilized water.
- alcohol solvents include lower alcohols such as ethanol, propanol and isopropanol, and polyhydric alcohols such as glycerin and ethylene glycol.
- hydrocarbon-based solvents include aliphatic hydrocarbons such as paraffinic hydrocarbons and naphthenic hydrocarbons, and alicyclic hydrocarbons, and kerosene such as JIS No. 1 kerosene is preferred.
- glycol ether solvents include propylene glycol monopropyl ether, propylene glycol monobutyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monobutyl ether, dipropylene glycol dimethyl ether, ethylene glycol monoisobutyl ether, diethylene glycol monoisobutyl ether, and diethylene glycol. dibutyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether and the like.
- aromatic solvents include toluene and xylene.
- ester solvents include isopropyl myristate, hexyl laurate, isopropyl palmitate and the like.
- the content of the solvent in the liquid preparation 13 is preferably 0-99.9% by mass.
- the content exceeds 0% by mass, preferably 20% by mass or more, and even more preferably 50% by mass or more.
- the solvent content is preferably 97% by mass or less, more preferably 90% by mass or less, even more preferably 85% by mass or less, particularly preferably 80% by mass or less, and most preferably 70% by mass or less.
- the ethanol content is preferably in the range of more than 0% by mass and less than 40% by mass, more preferably more than 0% by mass and less than 30% by mass with respect to the total mass of the liquid preparation 13. , more preferably more than 0% by mass and less than 20% by mass, particularly preferably more than 0% by mass and less than 18% by mass, particularly preferably more than 0% by mass and less than 15% by mass, most preferably more than 0% by mass and less than 10% by mass. Since ethanol expands more easily than water, the effect of the present invention, that is, the effect of returning the liquid preparation 13 to the storage container 11 via the absorbent material 19, is more likely to be obtained as the ethanol concentration is lower. The liquid preparation 13 sucked into the storage container 11 expands in the storage container 11 and further suppresses liquid return. Therefore, if the ethanol concentration becomes too high, the air volume tends to increase and liquid return is suppressed.
- ethanol is not contained in the liquid preparation 13, that is, its content is 0% by mass.
- additives include hydrogenated oils, glycerin or derivatives thereof, fatty acids or derivatives thereof, surfactants (e.g., sodium alkyl sulfate, polyoxyethylene fatty acid esters, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl ethers, etc.). ), pigments (e.g., tar pigments, iron oxide pigments, natural pigments, etc.), preservatives (e.g., methylparaben, thiazolinone compounds such as methylisothiazolinone, etc.), antifoaming agents (e.g., silicone resins, etc.), etc. can also The content of these other additives in the liquid formulation 13 is generally 10% by mass or less.
- surfactants e.g., sodium alkyl sulfate, polyoxyethylene fatty acid esters, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl ethers, etc.
- pigments e.g., tar pigments, iron oxide pigments,
- the liquid preparation 13 may further contain chelating agents, viscosity modifiers, specific gravity modifiers, ultraviolet absorbers, antioxidants, and the like.
- the liquid preparation 13 can be appropriately prepared by using water, alcohol, organic solvent, etc. for each of the above components.
- the content of the active ingredient in the liquid preparation 13 is arbitrary as long as the present invention can be achieved, and is not particularly limited.
- liquid formulation 13 An example of the formulation of the liquid formulation 13 is shown below.
- Active ingredient 0.01 to 20% by mass (preferably 0.1 to 15% by mass)
- Surfactant 0.01 to 20% by mass (preferably 0.5 to 10% by mass)
- Preservative 0 to 1% by mass (preferably 0 to 0.5% by mass)
- Defoamer 0 to 1% by mass (preferably 0 to 0.1% by mass)
- Appropriate amount of solvent preferably water, or an aqueous solution containing ethanol in the range of more than 0% by mass and less than 40% by mass in the liquid formulation, or a hydrocarbon solvent
- the lower container 12 forms the lower half of the main body of the inverted volatilization device 10 and supports the storage container 11 and the volatilization body 22 .
- a plurality of volatilization openings 15 are formed along the entire circumference of the side portion of the lower container 12 .
- the opening area of the volatilization opening 15 affects the amount of volatilization, and if it is too small, the amount of volatilization decreases. .
- the opening area of the volatilization opening 15 may be appropriately set according to the desired volatilization amount, but is preferably 5 to 200 cm 2 , more preferably 10 to 100 cm 2 , and particularly preferably 15 to 80 cm 2 .
- the storage container 11 has an engaging portion 17 formed on the outer peripheral portion near the lower end to be fitted to the locking projection 16 formed on the lower container 12 .
- An opening 18 is formed at the lower end of the storage container 11, and the opening 18 is closed by an inner plug 20 to which a liquid absorbent material 19 is attached.
- a cap 21 indicated by phantom lines in FIG.
- Various materials such as metal and plastic can be used for the inner plug 20, for example.
- metal it is necessary to use packing or the like to prevent leakage.
- polyethylene is preferable in terms of economic efficiency and usability, and this polyethylene is not particularly limited, Linear low-density polyethylene, branched low-density polyethylene, or the like, or a mixture thereof may be used.
- the mixing ratio is arbitrary.
- a plasticizer is added as needed. This is to increase productivity.
- the liquid-absorbing material 19 is a liquid-absorbing member that absorbs the liquid preparation 13 .
- the material forming the absorbent material 19 may be either an inorganic material or an organic material, but is preferably a resin. ), polypropylene (hereinafter also referred to as PP), polyethylene (hereinafter also referred to as PE), and the like.
- the liquid absorbing material 19 should preferably have the property of allowing gas-liquid exchange.
- the liquid absorbent material having the property of allowing gas-liquid exchange means that the liquid preparation 13 in the storage container 11 permeates into the liquid absorbent material and is discharged to the outside of the storage container 11, and also from the outside of the storage container 11.
- the liquid-absorbent material having the property of allowing gas-liquid exchange is preferably a porous material, for example, a porous material using at least one selected from the group consisting of PET, PA, PP and PE. is preferred.
- the absorbent material 19 is formed containing fibers.
- the fibers have a thin and long shape, and the cross-sectional shape in the direction orthogonal to the long axis thereof is substantially circular. Gas-liquid exchange is performed by this gap.
- the liquid preparation 13 in the storage container 11 is supplied to the outside of the storage container via the liquid-absorbing material 19 by gravity.
- a phenomenon occurs in which the liquid formulation is sucked into the storage container. For example, when the temperature rises, the air in the storage container 11 expands, so the liquid formulation 13 is easily pushed out, and when the temperature drops, the liquid formulation 13 held in the liquid absorbent material 19 is sucked into the storage container 11. - ⁇ Further, when the liquid preparation 13 decreases, the inside of the storage container 11 becomes negative pressure, so that an action of taking in air corresponding to the volume of the discharged liquid preparation 13 works.
- the present inventor found that the amount of liquid returned to the storage container can be adjusted by changing the fiber diameter of the fibers that make up the absorbent material 19 .
- By increasing the fiber diameter or combining different fiber diameters it is possible to adjust the gap between the fibers, thereby adjusting the flowability of the liquid preparation and adjusting the amount of liquid returning to the storage container.
- the desired liquid return amount depends on the shape and size of the storage container 11 and the lower container 12, the amount of the liquid preparation 13 that the volatilization body 22 can hold, the type of the liquid preparation 13, the viscosity or amount used, the usage environment such as temperature, etc. Since it changes according to various factors, it is only necessary to set a desired liquid return amount and adjust and determine the fiber diameter of the fibers constituting the liquid absorbent material 19 in consideration of the above various factors. In the present invention, it is preferable to adjust the fiber diameter of at least a part of the fibers to be 6 denier or more because the amount of liquid returned to the storage container can be easily increased.
- the absorbent material 19 used in the inverted volatilization device of the present invention preferably contains fibers with a fiber diameter of 6 denier or more. By including fibers having a large fiber diameter of 6 denier or more, the gaps between the fibers are widened, so that the liquid preparation 13 can easily return to the storage container 11 via the absorbent material 19 .
- the absorbent material 19 preferably contains fibers with a fiber diameter of 8 denier or more, and contains fibers with a fiber diameter of 10 denier or more. is more preferred.
- the upper limit of the fiber diameter is not particularly limited, for example, 50 denier or less is preferable, 30 denier or less is more preferable, and 20 denier or less is even more preferable.
- the absorbent material 19 used in the present invention may be composed of fibers having one type of fiber diameter, or may contain fibers having two or more types of fiber diameters in combination. Fibers having a fiber diameter of 6 denier or more are preferably contained in the absorbent material 19 in an amount of 10 mass % or more. By containing 10% by mass of fibers having a fiber diameter of 6 denier or more, the liquid preparation 13 exuded from the storage container 11 can easily return to the storage container, and even if the environmental temperature changes, excess liquid preparation 13 can be prevented. Effusion can be suppressed.
- Fibers having a fiber diameter of 6 denier or more are contained in the absorbent material 19 in an amount of 25% by mass or more, since they are less likely to be affected by fluctuations in environmental temperature and the like, and the effects of the present invention can be obtained more remarkably. is more preferable, more preferably 30% by mass or more, particularly preferably 35% by mass or more, particularly preferably 40% by mass or more, particularly preferably 45% by mass or more, 50 It is most preferable to contain more than mass %.
- the fiber diameter and content of the fibers contained in the absorbent material 19 can be measured using a scanning electron microscope or the like.
- the liquid absorbent material 19 can be produced by a known method.
- Examples of the type of the liquid-absorbing material 19 include a liquid-absorbing material (so-called heat-sealable core) obtained by a method of thermoforming raw yarn, and a method in which raw yarn is thermoformed, impregnated with resin, dried, and dried.
- Liquid-absorbent materials (so-called synthetic fiber cores) obtained by a method of curing and producing, and the like.
- the structure of the fibers constituting the absorbent material 19 is not particularly limited, and examples include a single system composed of one resin, and a core-sheath, sea-island, or side-by-side composite fiber composed of two or more resins.
- the liquid absorbing material 19 preferably has a porosity of 20% or more, more preferably 30% or more, even more preferably 40% or more, particularly preferably 50% or more, particularly preferably 60% or more, and particularly preferably 70%. The above is most preferable. Moreover, the upper limit of the porosity is preferably 90% or less, more preferably 88% or less, and even more preferably 85% or less, from the viewpoint of moldability of the absorbent material.
- the porosity of the liquid absorbing material 19 can be measured by the Archimedes method, the mercury porosity method, the weight porosity method, or the like.
- the size of the liquid absorbent material 19 can be appropriately set according to various conditions such as the amount of the liquid preparation 13 inside the storage container 11 and the viscosity of the liquid preparation 13 . From the standpoint of being less susceptible to changes in manufacturing suitability, cost, environmental temperature, etc., and more remarkably achieving the effects of the present invention, for example, when the liquid absorbing material 19 has a columnar shape, the liquid absorbing material 19
- the diameter (diameter of a cross section cut perpendicular to the axial direction) is preferably 2 to 15 mm, more preferably 4 to 12 mm, and particularly preferably 4 to 10 mm.
- the length (length in the axial direction) of the absorbent material 19 is preferably 10 to 50 mm, more preferably 10 to 40 mm, particularly preferably 18 to 36 mm.
- a volatilization body 22 is assembled in the lower container 12 at a position facing the liquid absorbing material 19 , and at least part of the liquid absorbing material 19 exposed outside the storage container 11 is in contact with the volatilization body 22 .
- the lower container 12 may have a liquid pool chamber 23 below the volatilization body 22, and when the lower container 12 has the liquid pool chamber 23, the volatilization body 22 has a liquid absorption part 26. .
- the volatilization body 22 is integrally formed with the base portion 24, the four volatilization portions 25, and the liquid absorption portion 26, that is, integrally formed of the same material. It is.
- the volatilization body 22 is contained in the lower container 12 so as to be sandwiched between the lower end portion of the storage container 11 (that is, the liquid absorbent material 19 ) and the lower container 12 .
- a supply of Formulation 13 is received.
- the lower end surface of the liquid absorbing material 19 is in surface contact with the upper surface of the base portion 24 .
- the contact of the absorbent material 19 transfers the liquid preparation 13 through the absorbent material 19 and volatilizes the liquid preparation 13 from the four volatilization portions 25 .
- the liquid absorption part 26 is bent so as to protrude from the bottom surface of the base part 24 toward the liquid pool chamber 23 .
- the liquid preparation 13 stored in the liquid reservoir chamber 23 can be returned to the base 24 by the liquid absorption part 26 that constitutes a part of the volatilization body 22 .
- any material can be used as long as it can hold the liquid preparation 13 and volatilize the active ingredient of the liquid preparation 13.
- organic materials such as resin and pulp can be used.
- glass fibers, glass powder, and other inorganic materials can be used.
- Particularly preferable materials for the volatilization body 22 include pulp and non-woven fabric.
- the volatilization body 22 may consist of several materials.
- the volatilization body 22 is mainly made of pulp and bonded with a binder, and has a configuration in which tissue-like pulp materials, nonwoven fabrics, etc. are stretched on the front and back surfaces in order to improve the strength and shape retention of the surface. preferably.
- the effect of volatilizing the active ingredient of the liquid preparation 13 held at the same time as opening at the start of use may be obtained.
- the thickness of the volatilization body 22 is preferably 2-12 mm, and more preferably 3-10 mm.
- the volatilization body 22 may be made by mixing and adhering a component having a deodorizing function or an antibacterial function such as green tea powder, activated carbon powder, or coffee bean powder.
- the receptor soluble or sparingly soluble in which the active ingredient or additive is contained and held in a desired carrier is held in the volatilization body 22, and the receptor is gradually dissolved by the supplied liquid preparation 13. good too.
- polymer powder, polymer fiber, or the like having at least one of hydrophilicity and lipophilicity and having high liquid absorption ability may be used. In this case, the liquid pool chamber 23 can be minimized or omitted to the extent that the present invention can be achieved.
- the inverted volatilization device 10 may omit the liquid pool chamber 23, the case of having it will be described below.
- the liquid pool chamber 23 has a bottom and an open top, and the volatilization body 22 is attached to the open top.
- the volatilization body 22 is soaked with the liquid formulation 13 from the storage container 11 and the volatilization body 22 becomes saturated and exceeds its liquid retention capacity
- the liquid pooling chamber 23 stores the amount of liquid formulation 13 that exceeds the liquid retention capacity. has the function of temporarily accommodating the Therefore, the tip (lower end) of the liquid absorbing portion 26 contacts the inner bottom surface of the liquid pooling chamber 23, that is, the bottom plate 27 in order to absorb all the liquid preparation 13 accumulated in the liquid pooling chamber 23 without waste.
- the liquid pool chamber 23 may be replaced with a liquid absorbing portion 26 having approximately the same size as its volume.
- the liquid absorption part for returning the liquid preparation 13 to the volatilization body 22 can be omitted.
- the volatilization body 22 has a configuration in which four volatilization parts 25 protrude obliquely upward from four edges of the base part 24, as shown in FIG.
- the volatilization body 22 can form a base portion 24, four volatilization portions, and a liquid absorption portion 26, for example, simply by cutting a rectangular plate material. Therefore, the liquid absorption part 26 can be produced at the same time when the volatilization body 22 is produced, so productivity can be improved.
- the liquid absorption part 26 is integrally formed with the base part 24 , the liquid preparation 13 stored in the liquid pool chamber 23 can be efficiently returned to the base part 24 .
- the liquid preparation 13 stored in the storage container 11 is impregnated with the liquid absorbent material 19 and then impregnated with the volatilization body 22, whereby the liquid is quantitatively discharged from the storage container 11. be done. Then, the air containing the active ingredient of the liquid preparation 13 is diffused to the outside from the four volatilization parts 25 of the volatilization body 22 through the volatilization openings 15 .
- the liquid preparation 13 inside the storage container 11 may be excessively supplied to the volatilization body 22 through the absorbent material 19 .
- the absorbent material 19 contains fibers having a fiber diameter of 6 denier or more, the liquid formulation 13 can easily return to the storage container 11 and increase the liquid return amount. Therefore, even if the liquid preparation 13 is exuded excessively, it is possible to suppress or delay the saturation of the retention amount of the liquid preparation 13 in the volatilization body 22 .
- the inverted volatilization device 10 when the inverted volatilization device 10 is provided with the liquid pool chamber 23, when the amount of the liquid formulation 13 retained in the volatilization body 22 becomes saturated and exceeds the liquid retention capacity, the excess amount of liquid The preparation 13 is temporarily accommodated in the liquid pool chamber 23 . Then, the liquid preparation 13 stored in the liquid pool chamber 23 is returned to the volatilization body 22 by the liquid absorbing portion 26 by capillary action. Therefore, the liquid preparation 13 stored in the liquid pooling chamber 23 is returned to the volatilization body 22, so that it does not remain in the liquid pooling chamber 23. Therefore, according to the inverted volatilization device 10, the liquid preparation 13 is prevented from leaking out, and the liquid preparation 13 can be used up without waste.
- the inverted volatilization device of the present invention is not limited to the above-described embodiments, and can be modified and improved as appropriate.
- the liquid absorbing material 19 is integrally formed, but the liquid absorbing portion 26 may be formed separately.
- a liquid absorbing portion having a volume equivalent to that of the liquid pooling chamber may be provided so as to be in contact with the volatilization body 22 .
- Liquid formulations 1 to 5 were prepared for use in the following test examples. Based on the formulation shown in Table 1, each component was mixed to prepare a liquid formulation.
- Example 1 The apparatus shown in FIG. 4 was used as an inverted volatilization apparatus.
- the inverted volatilization device 10 includes a storage container 1 (capacity 430 mL) containing a liquid formulation 2 inside, and a volatilization body 7 (77 cm 2 ⁇ thickness 4 mm, density 0.2 g/cm 3 ).
- a part of the absorbent material 5 is exposed to the outside of the storage container 1 , and the exposed part of the absorbent material 5 is in contact with the volatilization body 7 .
- the storage container 1 and the volatilization body 7 are supported by the lower container 9 .
- the liquid preparation 2 is supplied to the volatilization body 7 via the absorbent material 5 by gravity, and the active ingredient volatilized from the volatilization body 7 is released from the volatilization opening 9 a of the lower container 9 .
- the liquid absorbent material 5 is composed of 50% by mass of PET fiber having a fiber diameter of 15 denier and 50% by mass of PET fiber having a fiber diameter of 6 denier (thermal fusion core, porosity 85%). , core diameter ⁇ 8 mm, core length 18 mm).
- the porosity of the absorbent material was measured by the weight porosity method. The same applies to the following test examples.
- the upper container was obtained by closing the opening of the storage container 1 with the inner plug 3 having the absorbent material 5, and the weight of the upper container was measured.
- the liquid preparation 1 prepared above was heated to 40° C., and the liquid reservoir chamber 8 of the lower container 9 was filled with 50 g of the liquid preparation.
- the volatilization body 7 wetted by immersing it in the liquid preparation 1 was attached to the lower container 9, and the storage container 1 attached with the absorbent material 5 was attached to obtain a test sample.
- the test specimen was allowed to stand in a 40°C environment for 5 minutes, and then in a 10°C environment for 30 minutes. After that, the upper container was removed and the weight of the upper container was measured, and the weight of the liquid formulation in the storage container was calculated by subtracting the weight of the upper container before the test. Then, the ratio of the weight of the liquid preparation contained in the storage container to 50 g of the liquid preparation filled in the liquid pool chamber (liquid return rate) was calculated. The test was performed 3 times and the average value was obtained. Table 2 shows the results.
- Example 1-2 to 1-18 The test was conducted in the same manner as in Example 1-1, except that the structure of the absorbent material and the liquid preparation were changed as shown in Table 2. Table 2 shows the results.
- Examples 1-1 to 1-8 and the comparison of Examples 1-9 to 1-15 show that the liquid return amount can be adjusted by changing the fiber diameter of the absorbent material.
- Examples 1-1 to 1-4 and Examples 1-5, Examples 1-6 and Examples 1-7 to 1-8, Examples 1-9 to 1-10 and Examples 1-11 to 1-12, and Examples 1-13 and Examples 1-14 to 1-15 it was found that the liquid return rate was increased by using an absorbent material containing fibers with a fiber diameter of 6 denier or more.
- Examples 1-6 and 1-7 to 1-8, between Examples 1-9 and 1-11 to 1-12, and between Examples 1-13 and 1-14 to 1-15 the absorption It was found that even if the porosity of the liquid material is the same, the liquid return rate varies depending on the thickness of the constituent fibers, and an excellent liquid return effect can be obtained by using fibers having a fiber diameter of 6 denier or more.
- Examples 1-6, 1-13, 1-16 to 1-18 all have high liquid backflow rates, but the lower the ethanol content in the liquid preparation, the higher the liquid backflow rate. all right. This is thought to be because ethanol expands more easily than water, and the lower the concentration of ethanol, the less likely it is that the liquid preparation sucked into the storage container 11 will return due to expansion, and the easier it will return. be done.
- Example 2 As an inverted volatilization device, the device shown in FIG. 4 similar to that used in Test Example 1 was used.
- the liquid absorbent material 5 is composed of 50% by mass of PET fiber having a fiber diameter of 10 denier and 50% by mass of PET fiber having a fiber diameter of 2 denier. , core diameter ⁇ 8 mm, core length 36 mm).
- the liquid preparation 1 prepared above is heated to 40° C.
- 50 g of the liquid preparation 1 is filled in the storage container 1, and the opening of the storage container 1 is closed with an inner plug 3 having a liquid absorbent material 5, and the upper container is closed.
- the weight of the upper container was measured.
- Example 2-2 As the liquid absorbing material, a liquid absorbing material (thermal fusion core, porosity 71%, core diameter ⁇ 8 mm, core diameter ⁇ 8 mm, The test was performed in the same manner as in Example 2-1, except that a core length of 36 mm was used. Table 3 shows the results.
- Examples 2-1 and 2-2 are examples in which the storage container contained a liquid preparation at the start of the test. As can be seen from Table 3, regardless of the presence or absence of the liquid formulation in the storage container, Examples 2-1 and 2-2 were found to allow many liquid formulations to return to the storage container.
- Example 3 (Examples 3-1 to 3-4) The test was conducted in the same manner as in Example 1-1 of Test Example 1, except that the structure of the absorbent material and the liquid preparation were changed as shown in Table 4. The results are shown in Table 4 together with the results of Examples 1-2 and 1-6.
- Examples 3-1 to 3-4 are composed of 50% by mass of PET fibers having a fiber diameter of 10 denier and 50% by mass of PET fibers having a fiber diameter of 2 denier in Examples 1-2 and 1-6. This is an example in which the content of each PET fiber is changed while the liquid absorbent material is used. From the comparison between Example 1-2 and Examples 3-1 to 3-2 and between Example 1-6 and Examples 3-3 to 3-4, both examples have an excellent liquid return effect, and 10 As the content of PET fibers having a large fiber diameter such as denier increased, the liquid return rate increased.
- Example 4 The same test as in Example 1-1 of Test Example 1 was performed, except that the structure of the absorbent material and the liquid preparation were changed as shown in Table 5. The results are shown in Table 5 together with the results of Examples 1-2 and 1-3.
- Example 4-1 is an example using a liquid absorbent made of PET fibers having a fiber diameter of 20 denier.
- Example 4-1 had a high liquid return rate and an excellent liquid return effect.
- Example 5> (Examples 5-1 to 5-2) The test was conducted in the same manner as in Example 1-1 of Test Example 1, except that the structure of the absorbent material and the liquid preparation were changed as shown in Table 6. The results are shown in Table 6 together with the results of Examples 1-2.
- Example 5-1 and 5-2 the core diameter of the absorbent material composed of 50% by mass of PET fiber having a fiber diameter of 10 denier and 50% by mass of PET fiber having a fiber diameter of 2 denier was varied. This is an example. In all examples, the liquid return effect was excellent, and the larger the core diameter, the higher the liquid return rate.
- the structured absorbent material was used.
- the same test as in Example 1-1 of Test Example 1 was performed, except that the structure of the absorbent material and the liquid preparation were changed as shown in Table 8. Table 8 shows the results.
- Liquid formulations 6-7 were prepared for use in the following test examples. Based on the formulation shown in Table 9, each component was mixed to prepare a liquid formulation.
- Example 8 Using the liquid preparation 6, the liquid backflow rate of the liquid preparation was measured.
- a liquid absorbing material thermal fusion core, porosity 81%, A core diameter of ⁇ 8 mm and a core length of 18 mm
- the same test as in Example 1-1 of Test Example 1 was conducted to determine the liquid backflow rate of the liquid formulation. Table 10 shows the results.
- Example 8-2 to 8-4 The same test as in Example 8-1 was conducted except that the configuration of the absorbent material and the liquid preparation were changed as shown in Table 10. Table 10 shows the results.
- Examples 8-1 to 8-4 are examples in which a hydrocarbon-based solvent was used as a solvent for liquid preparations. From comparisons of Examples 8-1 and 8-2, and Examples 8-3 and 8-4, even when a hydrocarbon-based solvent is used as the solvent, the liquid return amount is adjusted by adjusting the fiber diameter. In addition, it was found that the liquid return rate is increased by using an absorbent material containing fibers having a fiber diameter of 6 denier or more.
- Example 9 (Examples 9-1 to 9-3) The same test as in Example 1-1 of Test Example 1 was performed, except that the structure of the absorbent material and the liquid formulation were changed as shown in Table 11. The results are shown in Table 11 together with the results of Example 8-1.
- Examples 9-1 and 9-2 are liquid-absorbent materials in which Example 8-1 is composed of 50% by mass of PET fibers having a fiber diameter of 10 denier and 50% by mass of PET fibers having a fiber diameter of 2 denier. is used, whereas the content of each PET fiber is changed.
- Example 9-3 is an example in which the core diameter is changed from Example 8-1. In any case, it has an excellent liquid return effect, and even when a hydrocarbon solvent is used as a solvent, the liquid return rate is high by using an absorbent material containing fibers with a fiber diameter of 6 denier or more. It turned out to be
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Abstract
Description
このような構成の倒立型揮散装置は、揮散体の液保持能力を超えて貯留容器から液体製剤が供給されたとしても液体製剤が液溜り室に一時的に溜められ、また液体製剤を液溜り室に溜まったままにすることなく液体製剤を揮散体に戻すことができる。
そこで本発明は、倒立型揮散装置における液体製剤の貯留容器への液戻り量を調整すること、そして揮散体の液保持能力を超えて貯留容器から液体製剤が供給された場合でも液体製剤を無駄なく使い切ることができる倒立型揮散装置を提供することを課題とする。
(1)液体製剤を収容した貯留容器の下方に揮散体を備えた倒立型揮散装置の、前記貯留容器から出液した前記液体製剤の前記貯留容器への液戻り量を調整する方法であって、前記貯留容器はその下方に吸液材を、該吸液材の少なくとも一部が貯留容器外部に露呈した状態で有し、前記吸液材が前記揮散体と接しており、前記吸液材を、繊維を含んで形成し、前記繊維の繊維径を調整して前記液体製剤の前記貯留容器への液戻り量を調整する方法。
(2)下方に吸液材を有するとともに前記吸液材の少なくとも一部が容器外部に露呈しており且つ液体製剤が内部に収容された貯留容器と、前記吸液材の露呈部分に接触した揮散体とを備え、前記吸液材は、繊維径が6デニール以上の繊維を含有する倒立型揮散装置。
(3)前記貯留容器の下部に組み付けられる下容器をさらに備え、前記下容器は、前記揮散体の下方に配置される有底状の液溜り室を有し、前記揮散体の一部が前記液溜り室の内底面に接している、前記(2)に記載の倒立型揮散装置。
なお、本明細書において、「上」、「下」等の方向は、倒立型揮散装置を設置したときの方向をいう。
また、本明細書において、「質量」は「重量」と同義である。
図1及び図2に示した実施形態では、倒立型揮散装置10はさらに下容器12を備え、下容器12は貯留容器11の下部に組み付けられ、下容器12により貯留容器11と揮散体22が支持されている。
水としては、例えば、精製水、イオン交換水、蒸留水、濾過処理した水、滅菌処理した水等が挙げられる。
アルコール系溶剤としては、例えば、エタノール、プロパノール、イソプロパノール等の低級アルコール、グリセリン、エチレングリコール等の多価アルコール等が挙げられる。
炭化水素系溶剤としては、例えば、パラフィン系炭化水素やナフテン系炭化水素等の脂肪族炭化水素及び脂環式炭化水素が挙げられ、JIS 1号灯油等の灯油が好ましい。具体的にはノルマルパラフィン、イソパラフィン、流動パラフィン等が挙げられる。
グリコールエーテル系溶剤としては、例えば、プロピレングリコールモノプロピルエーテル、プロピレングリコールモノブチルエーテル、ジプロピレングリコールモノプロピルエーテル、ジプロピレングリコールモノブチルエーテル、ジプロピレングリコールジメチルエーテル、エチレングリコールモノイソブチルエーテル、ジエチレングリコールモノイソブチルエーテル、ジエチレングリコールジブチルエーテル、ジエチレングリコールジメチルエーテル、トリエチレングリコールジメチルエーテル等が挙げられる。
芳香族系溶剤としては、例えば、トルエン、キシレン等が挙げられる。
エステル系溶剤としては、例えば、ミリスチン酸イソプロピル、ラウリン酸ヘキシル、パルミチン酸イソプロピル等が挙げられる。
(液体製剤13の処方例)
有効成分 0.01~20質量%(好ましくは0.1~15質量%)
界面活性剤 0.01~20質量%(好ましくは0.5~10質量%)
防腐剤 0~1質量%(好ましくは0~0.5質量%)
消泡剤 0~1質量%(好ましくは0~0.1質量%)
溶剤 適量(好ましくは水、又はエタノールを液体製剤中0質量%超40質量%未満の範囲で含む水溶液、又は炭化水素系溶剤)
合計 100質量%
上記の各成分は、本明細書に記載のものから選択して用いられる。
環境温度等の変動に影響を受けにくく、本発明の効果をより顕著に得られやすいという点から、繊維径が6デニール以上の繊維は、吸液材19中に、25質量%以上含有するのがより好ましく、30質量%以上含有するのがさらに好ましく、35質量%以上含有するのが特に好ましく、40質量%以上含有するのが殊更に好ましく、45質量%以上含有するのがとりわけ好ましく、50質量%以上含有するのが最も好ましい。
製造適正、コスト、及び環境温度等の変動に影響を受けにくく、本発明の効果をより顕著に得られやすいという点から、例えば、吸液材19が円柱状である場合、吸液材19の直径(軸方向に垂直に切断した断面の直径)は、2~15mmであるのが好ましく、4~12mmがより好ましく、4~10mmが特に好ましい。また、吸液材19の長さ(軸方向の長さ)は、10~50mmであるのが好ましく、10~40mmであるのがより好ましく、18~36mmが特に好ましい。
液溜り室23は、有底であって上部が開放されており、開放された上部に揮散体22が組み付けられている。液溜り室23は、揮散体22に貯留容器11からの液体製剤13が染み込み、揮散体22が飽和状態になってその液保持能力を超えたときに、その超えた分の量の液体製剤13を一旦収容する機能を有する。それ故、吸液部26の先端部(下端部)は、液溜り室23に溜まった液体製剤13を全て無駄なく吸液するために、液溜り室23の内底面、すなわち底板27に当接するように配置されることが好ましい。また、液溜り室23は、その容積とほぼ同サイズの吸液部26に替えてもよい。この場合、液体製剤13を揮散体22に戻す吸液部を省略することができる。
そして、倒立型揮散装置10が液溜り室23を備える場合は、揮散体22での液体製剤13の保持量が飽和状態になってその液保持能力を超えると、その超えた分の量の液体製剤13が液溜り室23に一旦収容される。そして、液溜り室23に収容された液体製剤13は、毛細管現象によって吸液部26により揮散体22に戻される。従って、液溜り室23に収容された液体製剤13は、揮散体22に戻されるため、液溜り室23に溜まったままになることがない。それ故、倒立型揮散装置10によれば、液体製剤13が漏れ出すことが防止され、液体製剤13を無駄なく使い切ることができる。
以下の試験例に使用する液体製剤1~5を作製した。表1に示した処方に基づき、各成分を混合し、液体製剤を作製した。
(例1-1)
倒立型揮散装置として、図4に示す装置を用いた。倒立型揮散装置10は、液体製剤2を内部に収容する貯留容器1(容量430mL)と、液体製剤2を含浸し液体製剤2に含まれた有効成分を揮散させるパルプ製の揮散体7(77cm2×厚み4mm、密度0.2g/cm3)とを備える。貯留容器1の下方には、吸液材5がその一部を貯留容器1の外部に露呈した状態で設けられており、吸液材5の露呈部分が揮散体7と接触している。そして、貯留容器1と揮散体7は、下容器9に支持されている。液体製剤2は、重力により吸液材5を介して揮散体7に供給され、揮散体7から揮散した有効成分が下容器9の揮散用開口部9aから放出される。
なお、吸液材の気孔率は、重量気孔率法により測定した。以下の試験例についても同様である。
次に、上記作製した液体製剤1を40℃に加温し、下容器9の液溜り室8に液体製剤50gを充填した。そして、液体製剤1に浸漬して濡らした揮散体7を下容器9に取り付け、吸液材5を取り付けた貯留容器1を取り付け、試験検体を得た。
その後、上容器を取り外して上容器重量を測定し、貯留容器内に入った液体製剤の重量を、試験前の上容器重量を減じることで算出した。そして、液溜り室に充填した液体製剤50gに対する貯留容器内に入った液体製剤の重量の割合(液戻り率)を算出した。
試験は3回行い、その平均値を求めた。結果を表2に示す。
吸液材の構成、及び、液体製剤を表2に記載したとおりに変更した以外は、例1-1と同様にして試験を行った。結果を表2に示す。
また、例1-6と例1-7~1-8、例1-9と例1-11~1-12、例1-13と例1-14~1-15のそれぞれの対比から、吸液材の気孔率が同じでも構成する繊維の太さにより液戻り率が変化し、6デニール以上の繊維径を有する繊維を用いることにより優れた液戻り効果が得られることがわかった。
そして、例1-6、1-13、1-16~1-18は、いずれも高い液戻り率であるが、液体製剤中のエタノール含有量が低い方が、液戻り率が高くなることがわかった。これは、エタノールの方が水よりも熱膨張しやすいため、エタノール濃度が低いほど、貯留容器11内に吸い上げられた液体製剤の膨張による液戻りの抑制が起こりにくく、液戻りしやすいためと考えられる。
(例2-1)
倒立型揮散装置として、試験例1で用いたものと同様の図4に示す装置を用いた。
吸液材5は、10デニールの繊維径を有するPET製繊維50質量%と2デニールの繊維径を有するPET製繊維50質量%で構成された吸液材(熱融着芯、気孔率81%、芯径Φ8mm、芯長36mm)を用いた。
上記作製した液体製剤1を40℃に加温し、貯留容器1に液体製剤1を50g充填し、吸液材5を備えた中栓3により貯留容器1の開口部を閉塞して上容器を得て、上容器重量を測定した。
次に、40℃に加温した液体製剤1を、下容器9の液溜り室8に50g充填した。そして、液体製剤1に浸漬して濡らした揮散体7を下容器9に取り付け、吸液材5を取り付けた貯留容器1を取り付け、試験検体を得た。
試験検体を40℃環境下で5分間静置し、その後、10℃環境下で30分間静置した。
その後、上容器を取り外して上容器重量を測定し、その増加量から、液溜り室に充填した液体製剤50gに対する貯留容器内に入った液体製剤の重量の割合(液戻り率)を計算した。
試験は3回行い、その平均値を求めた。結果を表3に示す。
吸液材として、10デニールの繊維径を有する繊維50質量%と2デニールの繊維径を有する繊維50質量%で構成された吸液材(熱融着芯、気孔率71%、芯径Φ8mm、芯長36mm)を用いた以外は、例2-1と同様にして試験を行った。結果を表3に示す。
(例3-1~3-4)
吸液材の構成、及び、液体製剤を表4に記載したとおりに変更した以外は、試験例1の例1-1と同様の試験を行った。結果を、例1-2及び例1-6の結果と共に表4に示す。
(例4-1)
吸液材の構成、及び、液体製剤を表5に記載したとおりに変更した以外は、試験例1の例1-1と同様の試験を行った。結果を、例1-2及び例1-3の結果と共に表5に示す。
(例5-1~5-2)
吸液材の構成、及び、液体製剤を表6に記載したとおりに変更した以外は、試験例1の例1-1と同様の試験を行った。結果を、例1-2の結果と共に表6に示す。
(例6-1~6-2)
吸液材の素材として、アクリル(PA)樹脂を用いた。
吸液材は、表7に示すように、10デニールの繊維径を有するPA製繊維50質量%と8デニールの繊維径を有するPA製繊維50質量%で構成された吸液材(合繊芯、気孔率70%、芯径Φ8mm、芯長18mm)を用いた。
表7に示すとおりに液体製剤1又は液体製剤2を用い、試験例1の例1-1と同様の試験を行った。結果を表7に示す。
(例7-1~7-8)
吸液材として、ポリプロピレン(PP)を芯部に配置し、ポリエチレン(PE)を鞘部として配置した芯鞘構造のPP/PE複合繊維(熱融着芯、PP:PE=50:50)で構成された吸液材を用いた。
吸液材の構成、及び、液体製剤を表8に記載したとおりに変更した以外は、試験例1の例1-1と同様の試験を行った。結果を表8に示す。
以下の試験例に使用する液体製剤6~7を作製した。表9に示した処方に基づき、各成分を混合し、液体製剤を作製した。
(例8-1)
液体製剤6を用いて、液体製剤の液戻り率を測定した。
吸液材として、10デニールの繊維径を有するPET製繊維50質量%と2デニールの繊維径を有するPET製繊維50質量%で構成された吸液材(熱融着芯、気孔率81%、芯径Φ8mm、芯長18mm)を用いた。
試験例1の例1-1と同様の試験を行い、液体製剤の液戻り率を求めた。結果を表10に示す。
吸液材の構成、及び、液体製剤を表10に記載したとおりに変更した以外は、例8-1と同様の試験を行った。結果を表10に示す。
例8-1と例8-2、並びに例8-3と例8-4のそれぞれの対比から、溶剤として炭化水素系溶剤を用いたときも、繊維径を調整することで液戻り量を調整でき、また繊維径が6デニール以上の繊維を含有する吸液材を用いることで、液戻り率が高くなることがわかった。
(例9-1~9-3)
吸液材の構成、及び、液体製剤を表11に記載したとおりに変更した以外は、試験例1の例1-1と同様の試験を行った。結果を、例8-1の結果と共に表11に示す。
2 液体製剤
3 中栓
5 吸液材
7 揮散体
8 液溜り室
9 下容器
9a 揮散用開口部
10 倒立型揮散装置
11 貯留容器
12 下容器
13 液体製剤
15 揮散用開口部
16 係止突起
17 係合部
18 開口部
19 吸液材
20 中栓
21 キャップ
22 揮散体
23 液溜り室
24 基部
25 揮散部
26 吸液部
27 底板
Claims (3)
- 液体製剤を収容した貯留容器の下方に揮散体を備えた倒立型揮散装置の、前記貯留容器から出液した前記液体製剤の前記貯留容器への液戻り量を調整する方法であって、
前記貯留容器はその下方に吸液材を、該吸液材の少なくとも一部が貯留容器外部に露呈した状態で有し、前記吸液材が前記揮散体と接しており、
前記吸液材を、繊維を含んで形成し、前記繊維の繊維径を調整して前記液体製剤の前記貯留容器への液戻り量を調整する方法。 - 下方に吸液材を有するとともに前記吸液材の少なくとも一部が容器外部に露呈しており且つ液体製剤が内部に収容された貯留容器と、
前記吸液材の露呈部分に接触した揮散体とを備え、
前記吸液材は、繊維径が6デニール以上の繊維を含有する倒立型揮散装置。 - 前記貯留容器の下部に組み付けられる下容器をさらに備え、
前記下容器は、前記揮散体の下方に配置される有底状の液溜り室を有し、前記揮散体の一部が前記液溜り室の内底面に接している、請求項2に記載の倒立型揮散装置。
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Publication number | Priority date | Publication date | Assignee | Title |
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JPH02200137A (ja) * | 1989-01-26 | 1990-08-08 | Kobayashi Pharmaceut Co Ltd | 薬剤発散用容器の吸上げ芯材 |
WO2003099343A1 (fr) * | 2002-05-27 | 2003-12-04 | Earth Chemical Co., Ltd. | Appareil de volatilisation |
JP2006095269A (ja) * | 2004-05-17 | 2006-04-13 | Earth Chem Corp Ltd | 倒立型揮散装置 |
JP2010051591A (ja) * | 2008-08-28 | 2010-03-11 | Earth Chem Corp Ltd | 倒立型揮散装置 |
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- 2022-06-06 CN CN202280035068.6A patent/CN117320761A/zh active Pending
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02200137A (ja) * | 1989-01-26 | 1990-08-08 | Kobayashi Pharmaceut Co Ltd | 薬剤発散用容器の吸上げ芯材 |
WO2003099343A1 (fr) * | 2002-05-27 | 2003-12-04 | Earth Chemical Co., Ltd. | Appareil de volatilisation |
JP2006095269A (ja) * | 2004-05-17 | 2006-04-13 | Earth Chem Corp Ltd | 倒立型揮散装置 |
JP2010051591A (ja) * | 2008-08-28 | 2010-03-11 | Earth Chem Corp Ltd | 倒立型揮散装置 |
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