JP2006264754A - Chemical fluid-evaporating container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chemical liquid-evaporating container capable of increasing a contact area of chemical fluid such as liquid-like or gel-like insecticide or deodorizer with a permeation film acting as a low barrier sealant film and increasing an amount of permeation of chemical fluid per unit area. <P>SOLUTION: This is a chemical fluid-evaporating container characterized in that an intermediate opening of a container body (1) is provided with a peripheral flange (2), a peripheral wall (3) is raised vertically from the outer periphery of the peripheral flange (2), a peripheral part of the opening outside the peripheral wall (3) is provided with a protrusion (4), liquid or gel-like chemical fluid (B) is stored in the container, at least an inner lid member (5) of permeation film is thermally bonded at the peripheral flange (2) and the container is used under an upside-down state where the inner lid member (5) is directed toward a ground surface. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a chemical solution scattering container in which a liquid solution or a gel-like insect repellent, a fragrance, or the like is transmitted and scattered through a low barrier sealant film, and more specifically, is a low barrier sealant film. The present invention relates to a chemical splash container that can increase the amount of chemical permeation per unit area by devising the container shape so as to increase the liquid contact area of the permeable membrane film to the chemical.

  Conventionally, a chemical splash container that stores liquid chemicals or gel-like insect repellents and fragrances that are vaporized to exert their effects is an inner seal lid having a gas barrier property at the peripheral flange portion of the upper opening of the container. Generally, a container that is adhered by heat-sealing the material so as to be peeled off and covered with a cap having excellent gas barrier properties such as a normal metal or plastic is widely used.

  However, when using it, remove the cap and remove the inner seal lid a little, or remove it completely, and remove it before use. There was a risk of accidental ingestion. Therefore, even if the container falls over during use by heat-sealing a cover material in which the gas barrier outer cover material and the gas permeable inner cover material are detachably laminated to the peripheral flange portion of the upper opening of the container, the chemical solution There has been a proposal of a double lid structure container (see, for example, Patent Document 1) that does not spill and that an infant does not accidentally swallow.

Prior art documents are shown below.
JP 2004-306995 A

  In the chemical liquid scattering container of the type that transmits and scatters through the permeable membrane film as described above, the permeable membrane film cover material is often used by being arranged on the top or side.

  However, for example, when used for placement on the top surface, it is necessary that the chemical solution scatters to the head space in the container and reaches the permeable membrane film, so that the amount of chemical solution per unit area is low There's a problem. Further, since the membrane is not in contact with the chemical solution, the permeation membrane film is not expected to swell due to the penetration of the chemical solution, so that the amount of the chemical solution per unit area does not increase.

  Next, in the horizontal direction, when the liquid level decreases with time, the head space increases and the liquid contact area of the permeable membrane film decreases. As a result, the permeation amount of the chemical solution varies with time, and stable chemical solution scattering properties cannot be obtained. In addition, a phenomenon is observed in which the permeable membrane film close to the bottom surface that is always in contact with the chemical solution partially swells and the shape of the film changes over time.

  The present invention is intended to solve such problems of the prior art, and liquid or gel-like insect repellents, fragrances and the like are in contact with the chemical solution of a permeable membrane film which is a low barrier sealant film. An object of the present invention is to provide a chemical solution scattering container that can increase the liquid area and increase the amount of chemical solution per unit area.

  The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 of the present invention provides a peripheral flange portion (2) in an intermediate opening portion of a container body (1), Peripheral flange portion (2) The peripheral wall portion (3) is erected vertically from the outer periphery, and a protrusion (4) is provided around the opening on the outer side of the peripheral wall portion (3) to provide a liquid or gel-like chemical solution (B). It is housed, and at least the inner lid material (5) of the permeable membrane film is heat-sealed to the peripheral flange portion (2) and used in an inverted state with the inner lid material (5) surface facing the ground. It is a chemical solution scattering container.

  The invention according to claim 2 of the present invention is the chemical splash container according to claim 1, wherein the permeable membrane film is low density polyethylene (LDPE), linear low density polyethylene (L-LDPE), ethylene-vinyl acetate. A chemical dispersion container characterized by being a polyolefin resin such as a copolymer (EVA) or ionomer (IO), or an unstretched film of the copolymer resin.

  The invention according to claim 3 of the present invention is the chemical splash container according to claim 1 or 2, wherein the container body (1) is formed by laminating a resin layer similar to the permeable membrane film as a sealant layer on the innermost layer. It is the chemical | medical solution scattering container characterized by having.

  The chemical splash container of the present invention is provided with a peripheral flange portion at the intermediate opening of the container main body, a peripheral wall portion is erected vertically from the outer periphery of the peripheral flange portion, and a protrusion is provided around the opening portion outside the peripheral wall portion, By storing a liquid or gel-like chemical solution, heat-sealing at least the inner lid material of the permeable membrane film to the peripheral flange portion, and using the inner lid material surface in an inverted state with the surface facing the ground, a permeable membrane The liquid contact area to the chemical solution of the film can be increased, and the chemical solution permeation amount per unit area can be increased.

  An embodiment of the present invention will be described in detail with reference to FIGS.

  FIG. 1 is a side sectional view showing one embodiment of a chemical liquid scattering container (A) according to the present invention, and FIG. 2 is a plan view showing one embodiment of the chemical liquid scattering container (A) according to the present invention. 3 is a side sectional view showing a state in which the chemical liquid scattering container (A) according to the present invention is inverted, and FIG. 4 is a chemical liquid permeability evaluation result diagram under each storage condition of the chemical liquid scattering container (A) according to the present invention. .

  The chemical solution scattering container (A) according to the present invention has a liquid contact area to the chemical solution of the inner lid material (5) of the permeable membrane film in which the chemical solution such as a liquid or gel insect repellent or fragrance is a low barrier sealant film. A chemical splash container capable of increasing the amount of chemical permeation per unit area by devising the shape of the container so as to increase, and as shown in FIG. 1, a peripheral flange is provided at the intermediate opening of the container body (1). A peripheral portion (2) is provided, a peripheral wall portion (3) is erected vertically from the outer periphery of the peripheral flange portion (2), and a protrusion (4) is provided around the opening on the outer side of the peripheral wall portion (3). The gel-like chemical solution (B) is accommodated, and at least the inner lid material (5) of the permeable membrane film is heat-sealed to the peripheral flange portion (2). As shown in FIG. ) A chemical scattering container (A) used in an inverted state with the surface facing the ground. In addition, as shown in FIG. 2, it can also be used, for example in the state of a horizontal direction, by providing suitably the projection part (4) of convex shape around the opening part of the said surrounding wall part (3) outer side.

Although the said container main body (1) uses the thing made from a plastic, when the content resistance with respect to an aromatic component etc. is considered, a polyethylene terephthalate (PET), a polycarbonate (PC), a polypropylene (PP), a polystyrene (PS) is used for a base material. It is preferable to use polyamide (PA) or the like and laminate a resin layer similar to the permeable membrane film as a sealant layer on the innermost layer. By using a similar resin layer in this way, the peripheral flange (2) of the container body (1) and the inner lid material (5) of the permeable membrane film can be completely bonded together by heat sealing. The chemical solution as the contents does not penetrate into the part and cause delamination.

  For example, a container having a configuration of APET (amorphous PET) / adhesive / linear low density polyethylene (L-LDPE), polypropylene (PP) / adhesive / low density polyethylene (LDPE), or the like.

  The method for producing the container body (1) is preferably a thermoforming method (vacuum forming method or pressure forming method), but may be an injection forming method.

  The thermoforming method (vacuum forming method or pressure forming method) is a method of secondary forming a thermoplastic resin sheet, and a heated or softened sheet is a male or female die provided with small holes (vent holes). This is a molding method in which either one of them is used and the molded product is taken out after being in close contact with the mold using vacuum or compressed air and cooled.

  Next, when using the chemical splash container (A), the permeable membrane film is used in an inverted state with the inner lid (5) surface made of the permeable membrane film facing the ground. Because it is in contact with chemicals such as fragrances and fragrances for a long time, it must have chemical resistance, and it must also have gas permeability that gradually disperses. It is preferable to use an unstretched film of a polymer resin.

  Specifically, for example, low density polyethylene (LDPE), linear low density polyethylene (L-LDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE), ethylene-vinyl acetate copolymer (EVA) , Ionomer (IO), polypropylene (PP), ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), ethylene-methyl acrylate copolymer (EMA), ethylene-ethyl acrylate An unstretched film such as a copolymer (EEA) or an ethylene-methyl methacrylate copolymer (EMMA) can be used.

  The inner lid member (5) made of such a permeable membrane film is heat-sealed to the peripheral flange (2) provided in the intermediate opening of the container body (1). This heat sealing method can be performed by a heat sealing method, an ultrasonic sealing method, or the like.

  Incidentally, if it is desired to adjust the scattering amount of the chemical component from the permeable membrane film in a reducing direction, the permeable membrane film is coated with printing ink or sealing varnish entirely or partially to reduce the degree of transmission, or The perforated film can be laminated to the permeable membrane film to reduce the transmission area.

  Prior to use, the chemical solution scattering container (A) of the present invention has a gas barrier property outside on the inner lid material (5) as shown in FIG. It is preferable to laminate | stack a cover material (6) so that peeling is possible.

The outer lid material (6) is, for example, bleached kraft paper having a thickness of about 130 g / m ² , high-quality paper, pure white roll paper, or the like, polyethylene terephthalate (PET), polypropylene (PP), about 15 to 25 μm, A base film layer (not shown) of a stretched film such as nylon (Ny), an aluminum foil having a thickness of about 7 μm, an aluminum deposited layer having a thickness of about 40 nm, or an inorganic oxide deposited layer such as silicon oxide or aluminum oxide. A gas barrier film layer (not shown) made of a vapor-deposited film having a thickness of about 30 to 50 μm and an ethylene-methacrylic acid copolymer (EMAA) or an ethylene-vinyl acetate copolymer (EVA) were heat-sealed. An easy peel layer (not shown) that can be easily peeled later is laminated through an adhesive layer (not shown).

  As the method for forming the aluminum vapor deposition layer or the inorganic oxide vapor deposition layer such as silicon oxide or aluminum oxide, a vacuum vapor deposition method, a sputtering method, or the like can be used. Vapor deposition is preferred.

  There are three types of vacuum deposition methods, depending on the form of the body to be vapor-deposited. 1) Batch method: vapor deposition method of molded products, 2) take-up semi-continuous method: vacuum for roll-shaped film (web) After unwinding, vapor deposition, and winding in the system, return to the atmospheric system again and take out the vapor deposition product. 3) Unwinder (unwinding device) for roll type film (web) ) And a rewinder (winding device) are arranged in the atmospheric system, and a vapor deposition drum and an evaporation source are arranged in a vacuum system to vaporize the evaporated substance on a roll film (web). This is a completely continuous method called a to-air method and has a feature of high productivity.

  When evaporating a vaporized material on a roll-shaped film (web), a take-up semi-continuous method is particularly widespread. Describes the internal structure. First, the constituent elements are a roll film (web), an evaporation source, an evaporation substance, a vapor deposition drum, a vacuum system, an unwinder (unwinding device), a rewinder (winding device), a guide roll, and the like.

  Next, the outline of the work process will be described. First, as a preparatory step, the door of the vacuum vapor deposition apparatus is opened, a roll-shaped film (web) is set in the unwinder (unwinding apparatus), and between the unwinder and the vapor deposition drum. A roll-shaped film (web) travels to the vapor deposition drum via the arranged guide roll, and further, the rewinder (winding device) is arranged via the guide roll arranged between the rewinder (winding device). And the preparation for vapor deposition of the evaporated substance on the roll film (web) is completed.

  Next, the door of the vacuum deposition apparatus is closed, and the vacuum film is separated from the vacuum suction constant pressure chamber and the partition wall in the vacuum deposition apparatus by a vacuum pump, and the roll film (web ), The evaporated substance is heated and evaporated from the evaporation source disposed at the lower part of the vapor deposition drum, and vapor-deposited on the roll film (web). Since the vapor deposition drum is cooled, the evaporated substance is recrystallized and fixed to the roll film (web), and the roll film (web) deposited via the guide roll on the rewinder side is attached to the rewinder. It is wound up.

  The internal structure of the vacuum deposition apparatus is divided into a vacuum suction constant pressure chamber and a vacuum deposition chamber by partition walls. The vacuum suction constant pressure chamber is composed of an unwinder, guide roll, tension control device, speed control device, position control device, and vapor deposition drum. Some rewinders are arranged.

In the vacuum deposition chamber, a part of the deposition drum, the evaporation source, its heating device, and the like are arranged, and the vacuum suction constant pressure chamber has a degree of vacuum of 1 by a vacuum pump attached to the periphery of the vacuum deposition apparatus main body. × 10 ⁰ MPa about, the vacuum deposition chamber provided via the partition wall is set to a degree 1 × 10 ^-2 MPa (SI units). Since the chamber is divided into two partitions, impurities (dust) such as gas generated from the roll-shaped film (web) in the vacuum suction constant pressure chamber are unlikely to adversely affect the deposition in the vacuum deposition chamber. . On the contrary, the radiant heat from the evaporation source arranged in the vacuum deposition chamber has little influence on the vacuum suction constant pressure chamber, and therefore has little influence on the roll film (web).

  The vacuum deposition method is also a heating method: 1) Indirect resistance method, 2) Direct resistance heating method (wire feed method), 3) High frequency induction heating method, 4) Electron beam method (Electoron Beam, EB method for short) 4 There are two methods, but when the evaporated substance uses an insulating metal oxide such as aluminum oxide or silicon oxide, the electron beam method with good energy conversion efficiency is optimal.

  The wound-up electron beam vacuum deposition method is a method of heating the surface of the evaporating material by irradiating the evaporating material directly with an electron beam and scanning the surface of the evaporating material. And evaporating the evaporated substance.

  Although the thickness of this vapor deposition layer is suitably selected by the end use of a vapor deposition film, it is preferable to exist in the range of 5-400 nm. If the film thickness is less than 5 nm, a uniform film cannot be provided, so that a sufficient gas barrier property cannot be obtained. If the film thickness exceeds 400 nm, flexibility is lost, and due to external factors such as bending and pulling, the deposited film is not formed. It is not preferable because cracks and peeling easily occur.

  Next, as described above, the outer lid member (6) uses a base film layer, a gas barrier film layer and an easy peel layer laminated via an adhesive layer, etc. As the lamination method, for example, a known method such as a dry lamination method, a non-solvent dry lamination method, a hot melt lamination method, or an extrusion lamination method can be used.

  The dry lamination method includes three sections, a coating unit for applying an adhesive on a film, a drying device, and a nip roller unit, and an unwinding, winding, and tension control system. The coating portion generally employs a gravure roll coating method, a reverse roll coating method, or the like.

  As the lamination adhesive, solvent-based adhesives such as polyurethane-based, polyester-based, epoxy-based, polyacrylic-based, polyvinyl acetate-based, and cellulose-based adhesives or solvent-free adhesives are used. When the agent is used, a drying apparatus is not necessary, which is called a non-solvent dry lamination method.

  The hot melt lamination method is a method in which a hot melt adhesive such as a heat-melted ethylene-vinyl acetate copolymer (EVA) is applied onto a film, and another film is immediately laminated.

  The extrusion lamination method involves heating a thermoplastic resin such as polyethylene or polypropylene, melting it in a cylinder called a cylinder, extruding it by applying pressure with a screw, and forming a narrow slit called a T die at the tip of the cylinder. The resin melted in the form of a curtain is extruded and laminated into a film.

  By utilizing this extrusion lamination method, a sandwich lamination method can be used in which a thermoplastic resin such as polyethylene or polypropylene is used instead of an adhesive, and one substrate is laminated with the other substrate.

  Next, as shown in FIG. 3, the chemical solution scattering container (A) produced in this way is used in an inverted state with the inner lid member (5) surface facing the ground. When used in an inverted state, the gas barrier outer lid material (6) arranged on the inner lid material (5) is removed before use so that the chemical solution as the contents does not scatter outside the container.

Thus, by using the inner lid material (5) surface of the chemical liquid scattering container (A) in an inverted state with the ground surface facing the ground, the inner lid material (5) and the chemical liquid (B) made of the permeable membrane film are always Since liquid contact is made, the liquid contact area can be increased, and the amount of chemical solution per unit film area can be improved. That is, the area of the permeable membrane for adding the same chemical solution scattering performance can be reduced, and the container can be made compact. In addition, as described above, since the chemical solution and the permeable membrane film are always in a liquid contact state during use, the effect of scattering of the chemical solution can be stably obtained over time. It can be avoided that only a part is deformed.

  Hereinafter, the chemical liquid scattering container (A) according to the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to these and is applied to a wider range.

<Example 1>
The container body (1) uses a sheet obtained by laminating a polypropylene film (PP) having a thickness of 320 μm and a linear polyethylene film (L-LDPE) having a thickness of 30 μm with a urethane adhesive by a dry lamination method. The shape shown in FIG. 1 was produced by vacuum forming.

Next, as the permeable membrane film, a cast film made of ethylene-vinyl acetate copolymer (VA cont. 15% EVA) and having a thickness of 100 μm was used, and the inside of the circular shape having a diameter of 6 cm and an area of 113.04 cm ² was used. A lid material (5) was produced.

  And after filling 30 cc of liquid insect repellent (phenoxyethanol) as the contents in the said container main body (1), the said inner cover material (5) was heat-sealed and the chemical | medical solution scattering container (A) was produced. The outer lid member (6) was not attached in advance. As shown in Table 1, the chemical solution scattering container (A) is allowed to stand with the inner lid material (5) of the permeable membrane film facing the ground, and stored in a 60 ° C. free oven in the stationary state. The amount of chemical permeation per unit area was measured over time, and the evaluation results of the chemical permeation were obtained. The results are shown in Table 2 and FIG.

  Below, the comparative example of this invention is demonstrated.

<Comparative Example 1>
In Example 1, as shown in Table 1, the chemical solution was the same as Example 1 except that the inner lid material (5) of the permeable membrane film was allowed to stand toward the top surface and the amount of the chemical solution permeated was measured. An evaluation result of transmittance was obtained. The results are shown in Table 2 and FIG.

<Comparative example 2>
In Example 1, as shown in Table 1, the chemical solution was measured in the same manner as in Example 1 except that the inner lid material (5) of the permeable membrane film was left to face the lateral surface and the amount of the chemical solution permeated was measured. An evaluation result of transmittance was obtained. The results are shown in Table 2 and FIG.

表１は、実施例１、および比較例１〜２における、各薬液飛散容器（Ａ）の薬液透過度を測定する際の静置状態を示す評価条件一覧表である。

Table 1 is an evaluation condition list showing the stationary state when measuring the chemical liquid permeability of each chemical liquid scattering container (A) in Example 1 and Comparative Examples 1 and 2.

表２は、実施例１、および比較例１〜２における、経時で単位面積当たりの薬液透過量を測定し、薬液透過度の評価結果表である。

Table 2 is an evaluation result table of chemical liquid permeability by measuring the chemical liquid permeation amount per unit area over time in Example 1 and Comparative Examples 1 and 2.

  Below, the evaluation result of an Example and a comparative example is demonstrated.

<Evaluation results>
In Example 1, the chemical liquid permeability gradually increased with time, and a sufficient chemical liquid scattering effect was obtained. On the other hand, in Comparative Example 1, the chemical permeability hardly changed with time, the permeation amount was very small, and there was no chemical scattering effect. Comparative Example 2 initially showed the same change in chemical permeability as in Example 1, but the permeability drastically decreased midway, and a complete chemical splashing effect was not obtained.

It is a sectional side view which shows one Example of the chemical | medical solution scattering container which concerns on this invention. It is a top view which shows one Example of the chemical | medical solution scattering container which concerns on this invention. It is a sectional side view which shows the state which inverted the chemical | medical solution scattering container which concerns on this invention. It is a chemical liquid permeability evaluation result figure in each preservation | save conditions of the chemical | medical solution scattering container which concerns on this invention.

Explanation of symbols

A ... Chemical liquid scattering container B ... Chemical liquid 1 ... Container body 2 ... Peripheral flange part 3 ... Peripheral wall part 4 ... Projection part 5 ... Inner cover material of permeable membrane film 6. ..Gas barrier outer cover material

Claims (3)

  A peripheral flange is provided at the middle opening of the container body, a peripheral wall is erected vertically from the outer periphery of the peripheral flange, and a protrusion is provided around the opening outside the peripheral wall to store a liquid or gel-like chemical solution. And at least the inner lid | cover material of a permeable membrane film is heat-seal | fused to the said peripheral flange part, and this inner lid | cover material surface is used in the inverted state toward the ground, The chemical | medical solution scattering container characterized by the above-mentioned.   The permeable membrane film is a polyolefin resin such as low density polyethylene (LDPE), linear low density polyethylene (L-LDPE), ethylene-vinyl acetate copolymer (EVA), ionomer (IO) or the like The chemical solution scattering container according to claim 1, which is an unstretched film of a combined resin.   The chemical container according to claim 1 or 2, wherein the container body has a resin layer similar to the permeable membrane film laminated as an innermost layer as a sealant layer.

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