JP4682571B2 - Liquid chemical transpiration container - Google Patents

Description

  The present invention is a liquid drug evaporation container having a function of sucking and evaporating a liquid drug contained in the container, and in particular, a liquid drug evaporation container having a water / oil repellent layer provided on the inner surface of the container to improve the volatility of the drug About.

  Traditionally, indoor deodorization / insect control has been performed by spraying a liquid with an effect of removing off-flavors or a liquid with a high repellent effect directly onto the source of the odor, but with this, a temporary effect can be seen. Due to lack of persistence, it was necessary to spray liquid drugs frequently.

  Therefore, in order to obtain continuous effects such as deodorization, aroma, insect repellent, etc., a sucking member or a volatilizing material having a sucking property was immersed in a liquid medicine, and the medicine was sucked up to the atmosphere and brought into contact with the atmosphere. A method using a chemical evaporation container that volatilizes a chemical continuously by a volatilizer (for example, Patent Document 1) has become common. However, since liquids such as deodorizers to be volatilized are made into one liquid by adding a surfactant to deodorant components, aromatic components, water, alcohol, etc., only light molecular weight components evaporate first and are heavy. A phenomenon occurs in which molecular weight components and surfactants remain in the container. Therefore, the component ratio of the liquid changes in the early and late stages of use, causing problems such as being unable to demonstrate stable performance as a fragrance, deodorant, and insect repellent, and misunderstanding that it can be used even though it is no longer effective. was there.

Patent documents are described below.
Japanese Utility Model Publication No. 64-49246

  The present invention has a function of sucking and evaporating the liquid medicine contained in the container, each component of the volatile liquid medicine evaporates at the same time, so that the medicine can be used up to the end without remaining in the container. An object of the present invention is to provide a liquid chemical transpiration container having improved properties.

In order to achieve the above object, the invention according to claim 1 is a liquid chemical evaporation container in which an aqueous liquid chemical contained therein is evaporated, and a water and oil repellent layer is provided on the inner surface of the container. And the contact angle of the oil repellent layer with respect to water is 85 ° or more, and an opening for sucking and evaporating the drug inside the container is provided in a part of the container, and a part of the volatilized body carried through the opening Is a liquid chemical transpiration container characterized by protruding outside the container.

The invention according to claim 2, wherein the water- and oil-repellent layer is a liquid medicament transpiration container according to claim 1, wherein that you comprising a fluorine-containing compound or a silicone-containing compound.

The invention according to claim 3 is the liquid chemical transpiration container according to claim 1 or 2, wherein the water-repellent and oil-repellent layers comprise vapor-deposited thin film layers.

The invention according to claim 4, wherein the water- and oil-repellent layer is a liquid medicament transpiration container according to claim 1 or 2, wherein comprising the cured film layer by radiation irradiation.

The invention according to claim 5, wherein the radiation is a liquid medicament transpiration container according to claim 4, characterized in that the electron beam or ultraviolet rays.

The invention according to claim 6, wherein the curing thin layer by radiation irradiation, claim 4 or characterized in that it is a cured film layer by the addition polymerization reaction of the reactive functional group of the fluorine-containing compound or a silicone-containing compound 5. The liquid chemical transpiration container according to 5.

  The invention according to claim 7 is the liquid drug transpiration container according to claim 6, wherein the reactive functional group comprises any one of an acryl group, a methacryl group, and a vinyl group.

  According to the present invention, by providing a water repellent / oil repellent layer having a water contact angle of 85 ° or more on the inner surface of the liquid chemical transpiration container, the volatilization body promotes the transpiration of the chemical liquid sucked up by the capillary phenomenon. It can be made inside the container. In particular, it is effective when the transpiration of the chemical solution proceeds and the treated container inner surface is in a state where it is exposed to the atmosphere.

  The liquid chemical transpiration container of the present invention is a container for transpiration of liquid chemicals such as fragrance, deodorant, insect repellent, etc. with a volatilizing body. Therefore, alteration of the chemical can be prevented and the effect of the chemical can be fully extracted. Of course, it is suitably used as a liquid chemical evaporation container for aroma, insect repellent, etc., but as other liquid evaporation containers.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic cross-sectional view showing an example of the configuration of the liquid drug transpiration container of the present invention. FIG. 2 is a schematic cross-sectional view showing another example of the configuration of the liquid drug transpiration container of the present invention.

  FIG. 1 (a) shows a liquid drug transpiration container 10 as an embodiment of the present invention in which an aqueous liquid drug accommodated therein evaporates. FIG. 2B is an enlarged cross-sectional view of a part A of the base material constituting the main body 1 of the liquid drug transpiration container 10. As shown in FIG. (B), as a base material constituting the main body 1 of the liquid drug evaporation container 10, for example, a polyethylene terephthalate (PET) film layer 1a / stretched nylon (ONy) film layer 1b / low density polyethylene (LDPE) A water repellent / oil repellent layer 1e is provided on the inner surface side of the liquid chemical evaporation container 10 of the laminated film 1d made of the film layer 1c, and the contact angle of the water repellent / oil repellent layer 1e with water is 85 ° or more. An opening 5 for sucking and evaporating the internal medicine 4 is provided in a part of the container, and a part of the volatilization body 2 carried by the cartridge 3 through the opening 5 protrudes to the outside of the container. A liquid drug transpiration container 10 is characterized.

  FIG. 2 also shows, as another specific embodiment of the present invention, the length of the portion where the height of the container is 20 cm and a part of the volatilizing body 2 that sucks and evaporates the drug 4 inside the container protrudes outside the container. This is a liquid chemical transpiration container 20 having a thickness of 5 cm.

  As the base material constituting the main body 1 of the liquid chemical transpiration container used in the present invention, a lightweight and inexpensive plastic material that can be used for a fragrance container and that can perform water and oil repellency treatments is used. A container here includes a blow molded product / injection molded product from a film-like one, and in the case of a film, it may be formed into a pouch shape or a processed film may be attached to the inner surface of the molded product. As long as it does not extremely inhibit the transpiration function of the drug, it is not particularly limited to a columnar shape or a prismatic shape. In the case of bag making, either bag making before processing or bag making after processing may be used.

  As the volatilization body 2 used in the present invention, the member that sucks up the drug inside the container has a function of sucking the drug by capillary action, and the volatilization body to be evaporated has drug transpiration, and these performances are effective. There is no particular limitation as long as it is a material structure that can be expressed in an automatic manner. It is possible to use herbaceous plant fibers such as broad-leaved trees, conifers, rice, straw, etc. and rayon fibers, etc., which are excellent in liquid absorbency, and are used for thermoplastic resins having a binder function and ordinary wet papermaking as necessary. It may contain an additive such as a sizing agent. Moreover, in order to improve volatilization performance and intensity | strength, what bonded the rayon cloth on the surface may be used.

  The water / oil repellent layer 1e provided on the inner surface of the container in the present invention can be provided by forming a thin film by vapor deposition of a fluorine-containing compound or a silicone-containing compound. The contact angle of the water / oil repellent layer with respect to water is preferably 85 ° or more, and if it is less than that, the water repellency is not sufficient, so that the drug may remain in the container.

By selecting a fluorine-containing compound or a silicone-containing compound, high water and oil repellency can be exhibited. In the case of a fluorine-based compound, a compound containing a perfluoroalkyl group is particularly preferred since many have a contact angle with water of 100 ° or more. As the perfluoroalkyl group-containing monomer, known and commonly used monomers can be used. For _{example, CF 3 (CF 2) n} CH 2 CH 2 OCOCH = CH 2, CF 3 (CF 2) n OCOCH = CH 2, (CF 3) 2 CF (CF 2) n CH 2 CH 2 OCOCH = CH 2, Examples include those represented by general formulas such as CF ₃ (CF ₂ ) _n CH ₂ CH ₂ OCOCCH ₃ ═CH ₂ . In the case of performing vacuum deposition, it is necessary to select a component that can be evaporated in vacuum in consideration of boiling point, molecular weight, viscosity, saturated vapor pressure, and reactivity.

  The thickness of the water / oil repellent layer is not particularly limited as long as sufficient water / oil repellency, film strength and adhesion can be obtained.

  The method for forming the thin film is not particularly defined, and the method of immersing in a fluorine-based silane coupling agent or the like requires a solvent or is difficult to reduce the thickness of the film. The vacuum deposition method referred to here is a CVD method in which a fluorine compound is introduced into a gas in a vacuum and converted into plasma to chemically react radicals and ions generated with the inner surface of the container, or a fluorine-based monomer is applied to the inner surface of the container in a vacuum. It refers to a method of inducing the curing of the monomer with an electron beam or the like after being deposited, and can be formed without a solvent, and a thin film can be formed.

  Further, the water / oil repellent layer 1e provided on the inner surface of the container according to the present invention is irradiated with an electron beam of a reactive functional group such as an acryl group, a methacryl group or a vinyl group or an ionizing radiation such as an ultraviolet ray. A cured thin film can be formed by an addition polymerization reaction.

  Examples of fluorine-containing compounds or silicone-containing compounds having reactive functional groups such as acrylic groups, methacrylic groups, and vinyl groups include radical polymerization type unsaturated polyesters, epoxy acrylates, urethane acrylates, polyester acrylates, alkyd acrylates, and silicone acrylates. Examples include monomers such as radical addition type polyene, polythiol, spirane resin, cationic polymerization type epoxy resin, acid curable amino alkyd resin, etc. What is necessary is just to select suitably by performance.

Furthermore, in addition to the above, additives such as resins and leveling agents may be included. For example, various known diacrylates can be appropriately selected depending on the application and required physical properties, and mainly contribute to the degree of crosslinking of the film, that is, mechanical strength. Furthermore, it is not a limiting example, but dimensional
Yyl trichlorodedecane diacrylate increases the abrasion resistance of the film, and trimethylpropylene monobenzoate diacrylate can contribute to the flexibility of the film. Moreover, 2-Hydroxy-3-acrylic propylene methacrylate etc. can contribute to the adhesiveness to a base material.

  Examples of the ionizing radiation include electron beams, ultraviolet rays, α rays, β rays, γ rays, X rays, neutron rays, etc. In consideration of handling safety and safety, electron rays and ultraviolet rays are preferable, and the cost of the apparatus It may be appropriately selected according to the physical properties required for the product.

  When film is water-repellent before bag making, vacuum deposition with ionizing radiation-curing resin can perform water-repellent processing at a higher speed than methods such as CVD on the inner surface of the container, which is very advantageous. .

  Examples of the present invention will be described below, but the present invention is not limited thereto.

  First, a compound containing 30% fluorine compound and diacrylate (2-Hydroxy-3-acrylic propylene methacrylate) as a fluorine compound having an acrylic group terminal represented by the following general formula on a 38 μm thick polyethylene terephthalate (PET) film. The coating was performed by a vacuum deposition method, and immediately cured by an electron beam (20 Mrad). At the time of coating, only the part was shielded so that the deposited layer was not attached to the part where the films were bonded together during bag making. The thickness of the deposited film was 0.2 μm. A stretched nylon film with a thickness of 25 μm was bonded to the untreated surface of this film by dry lamination, and then a low-density polyethylene film with a thickness of 130 μm was bonded by the dry lamination method. A laminated film containing 30% of the fluorine compound was prepared (see FIG. 3). Here, the content of the fluorine compound is in terms of weight.

但し、ＲＦは、パーフルオロアルキル鎖を表す。

However, RF represents a perfluoroalkyl chain.

  Next, a self-supporting bag having a capacity of about 600 ml with an opening at the top was prepared with a three-sided structure consisting of front and back surfaces (both sides) and a bottom portion (bottom surface). Bottom width 3.5 cm).

  Moreover, the volatilization body used the thing which extracted the mat which made pulp the main component and adhered the pulp with 15% of resin fiber which has a core-sheath structure in strip shape (length 25cm, width 3cm). The volatilizer has the function of sucking up the liquid drug in the container and evaporating it into the atmosphere.

  In this way, the volatilization body was attached to a plastic cartridge, adjusted so that the volatilization surface of the volatilization body came out of 5 cm from the self-supporting bag, and placed in a fluorine-treated self-supporting bag, thereby producing the liquid chemical evaporation container of the present invention. . In the volatilization performance test, the chemical was injected into the liquid chemical vaporization container, and the volatilized material was set to arrive at the bottom of the vaporization container.

In Example 1, a liquid drug evaporation container of the present invention consisting of a self-supporting bag was prepared in the same manner as in Example 1 except that a fluorine compound containing 50% fluorine compound was used as the fluorine compound at the acryl group terminal.

  In Example 1, a liquid chemical evaporation container of the present invention comprising a self-supporting bag was prepared in the same manner as in Example 1 except that a fluorine compound containing 70% fluorine compound was used as the fluorine compound at the acrylic group terminal.

  As a comparative example for comparing performance with the liquid chemical transpiration container of the present invention, in Example 1, a stretched nylon film and low-density polyethylene were bonded to an undeposited polyethylene terephthalate film in the same manner as the laminated film 2 and untreated. A liquid drug transpiration container comprising a self-supporting bag was prepared in the same manner as in Example 1 except that the laminated film (see FIG. 4) was used.

  First, the contact angles with respect to water of the laminated film fluorine-treated surface and the untreated polyethylene terephthalate surface constituting the liquid drug transpiration container body composed of the self-supporting bags obtained in Examples 1 to 4 were measured. The results are shown in Table 1.

表１より、実施例１〜３で得られた本発明における積層フィルムフッ素処理面は、接触角がいずれも８０゜以上の値が得られた。また、ＸＰＳ（Ｓｈｉｍａｄｚｕ製：ＥＳＣＡ３２００）により被膜の組成分析を行なった結果、実施例１〜３で得られた積層フィルムフッ素処理面はでは、Ｃ−Ｆ結合に起因するピークが観察されたが、比較例としての実施例４で得られた未処理の積層フィルムにはフッ素原子に起因するピークは認められなかった。このことから、実施例１〜３で得られた本発明における積層フィルムフッ素処理により撥水性が向上したことがわかる。

From Table 1, the contact angles of the laminated film fluorinated surfaces in the present invention obtained in Examples 1 to 3 were 80 ° or more. In addition, as a result of the composition analysis of the film by XPS (manufactured by Shimadzu: ESCA3200), on the laminated film fluorine treated surface obtained in Examples 1 to 3, a peak due to the C—F bond was observed, In the untreated laminated film obtained in Example 4 as a comparative example, no peak due to fluorine atoms was observed. From this, it can be seen that the water repellency was improved by the laminated film fluorine treatment in the present invention obtained in Examples 1 to 3.

  In addition, 400 g (400 ml) of the liquid medicine was injected into the liquid medicine evaporation container composed of the self-supporting bags obtained in Examples 1 to 4, and the volatilization performance test was performed. The liquid drug contains a fragrance, a plant extract, an amphoteric surfactant deodorant, a surfactant (nonionic, anionic), and a pigment, but the main component is water. The volatilization performance was evaluated by injecting the drug into a liquid drug vaporization container and immersing the volatilized material in the liquid, and then tracking the change in weight due to the volatilization of the drug. The test was conducted in an environment of 22 ° C. and humidity of about 51%. The result is shown in FIG.

  From FIG. 5, at the initial stage of volatilization, the liquid was reduced in any of the liquid chemical vaporization containers obtained in Examples 1 to 4, and no difference was observed in the volatilization amount. Thereafter, all of the liquid chemical evaporation containers of the present invention obtained in Examples 1 to 3 exhibited relatively stable volatilization performance in the middle and later stages of volatilization, and the entire amount was volatilized without any liquid remaining. On the other hand, from the middle stage of volatilization, the volatilization rate began to decrease significantly in the untreated liquid chemical vaporization container obtained in Example 4 as a comparative example, and finally the liquid remained in the free-standing bag container. Therefore, regarding the chemical volatility which is the basic performance of the liquid chemical evaporation container, the liquid chemical evaporation container of the present invention whose inner surface was water-repellent treated showed better results.

  The liquid chemical transpiration container of the present invention is a container for transpiration of liquid chemicals such as fragrance, deodorant, insect repellent, etc. with a volatilizing body. Therefore, alteration of the chemical can be prevented and the effect of the chemical can be fully extracted. Of course, it is suitably used as a liquid chemical evaporation container for aroma, insect repellent, etc., but as other liquid evaporation containers.

It is a cross-sectional schematic diagram which shows an example of the liquid chemical evaporation container of this invention. It is a cross-sectional schematic diagram which shows the other example of the liquid chemical | medical agent evaporation container of this invention. It is a cross-sectional schematic diagram which shows an example of the laminated | multilayer film which comprises the liquid chemical transpiration container in Examples 1-3. It is a cross-sectional schematic diagram which shows an example of the laminated | multilayer film which comprises the liquid chemical evaporation container in Example 4. It is a graph which shows the result of the volatilization test in the liquid medicine evaporation container obtained in Examples 1-4.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 30, 40 ... Laminated film base material which comprises a liquid medicine evaporation container 1a ... 1st plastic film base material layer 1b ... 2nd plastic film base material layer 1c ... 3rd Plastic film base layer 1e, 34 ... Water / oil repellent layer 2 ... Volatilizer 3 ... Cartridge 4 ... Liquid medicine 5 ... Transpiration port opening 10, 20 ... Liquid medicine transpiration Container 31, 41 ... Polyethylene terephthalate (PET) film layer 32, 42 ... Stretched nylon (ONy) film layer 33, 43 ... Low density polyethylene (LDPE) film layer

Claims (7)

In a liquid chemical transpiration container in which an aqueous liquid chemical contained therein evaporates, a water repellent and oil repellent layer is provided on the inner surface of the container, and the contact angle of the water repellent and oil repellent layer with respect to water is 85 ° or more. A liquid drug evaporation container, wherein an opening for sucking and evaporating the drug is provided in a part of the container, and a part of the volatilized material penetrating through the opening protrudes outside the container. The water- and oil-repellent layer is, liquid drug transpiration container according to claim 1, wherein that you comprising a fluorine-containing compound or a silicone-containing compound. The liquid chemical vaporization container according to claim 1 or 2, wherein the water-repellent and oil-repellent layers comprise vapor-deposited thin film layers. The water- and oil-repellent layer is, according to claim 1 or 2 liquid medicament transpiration container according to comprising the cured film layer by radiation irradiation. The radiation is, liquid drug transpiration container according to claim 4, characterized in that the electron beam or ultraviolet rays. The cured film layer by radiation irradiation, liquid drug transpiration container according to claim 4 or 5, wherein it is cured thin layer by addition polymerization reaction of the reactive functional group of the fluorine-containing compound or a silicone-containing compound.   The liquid chemical vaporization container according to claim 6, wherein the reactive functional group comprises any one of an acryl group, a methacryl group, and a vinyl group.

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