JP4802812B2 - Hydrogen peroxide container - Google Patents

Description

  The present invention relates to a hydrogen peroxide solution storage container, and more particularly to a hydrogen peroxide solution storage container that can be used safely and easily.

Conventionally, storage containers containing hydrogen peroxide water are commercially available. Since the hydrogen peroxide solution gradually decomposes spontaneously into oxygen and water, the cap of the hydrogen peroxide solution container is provided with a degassing function (for example, Patent Document 1).
A commercially available container has a structure different from that of the cap disclosed in Patent Document 1, but also has a gas venting function. The container includes a container body that contains, for example, hydrogen peroxide having a concentration of 35%, and a cap that seals the mouth, and the cap is detachably screwed into the mouth. It consists of an outer cap and an inner cap provided in the outer cap. An opening is formed in a part of the inner cap, and a non-woven fabric that prevents the passage of hydrogen peroxide but allows the passage of oxygen is provided in the opening.
Oxygen generated in the container body escapes to the outside of the inner cap through the nonwoven fabric and the opening of the inner cap, that is, into the space between the inner cap and the outer cap, and is provided on the inner surface of the outer cap. It is possible to escape from the space between the inner cap and the outer cap to the atmosphere via the escape groove.

The hydrogen peroxide solution is used, for example, as a sterilizing solution for a hydrogen peroxide steam sterilization system in which the hydrogen peroxide solution is vaporized to be sterilized (Patent Document 2). In general, the commercially available hydrogen peroxide solution has a minimum capacity of 500 g or 1 kg, but in order to sterilize a sterilization space of about 1 m ³ , a small amount of hydrogen peroxide solution of about 25 g or less is required. ing.
For this reason, when using, for example, 25 g of hydrogen peroxide water in the sterilization system, the cap, that is, the inner cap and the outer cap integrated with each other, is removed from the container body, and a weighing scale is removed from the container body. Pour the hydrogen peroxide solution into the measuring cup while measuring it to 25 g hydrogen peroxide solution in the measuring cup, and when 25 g hydrogen peroxide solution is obtained in the measuring cup, the cap is attached to the mouth of the container body. Screw on.
Then, the hydrogen peroxide solution in the measuring cup is supplied to the sterilization system, while the container containing the hydrogen peroxide solution is stored in a cool dark place or a refrigerator.
Japanese Utility Model Publication No. 63-197861 Japanese Patent Publication No. 5-66142

The conventional container for hydrogen peroxide solution is based on the premise that the hydrogen peroxide solution is taken out from the container body by removing the cap, so there is a risk of spilling the hydrogen peroxide solution. It was complicated.
In view of such circumstances, the present invention provides a container for hydrogen peroxide water that is easy to handle.

That is, the invention of claim 1 comprises a container body containing hydrogen peroxide water, and a sheet-like sealing means for sealing the mouth of the container body,
This sealing means prevents the passage of hydrogen peroxide water in the container body but allows the passage of oxygen, and the sealing means is a supply pipe for supplying the hydrogen peroxide water in the container body to the outside. The tip portion can be pierced.

According to the first aspect of the present invention, since the tip of the supply pipe can be pierced by the sealing means, the inside of the container main body can be simply inserted into the sealing means without removing the sealing means. The hydrogen peroxide solution can be easily supplied to the outside. Therefore, the handling can be made easy.
Further, since the sealing means prevents the hydrogen peroxide solution from passing through, the hydrogen peroxide solution does not leak to the outside even if the storage container falls down.
And since the sealing means allows oxygen to pass through, even if the hydrogen peroxide solution gradually decomposes into oxygen and water gradually, the oxygen can escape to the outside through the sealing means. The pressure in the container body does not increase. Therefore, even if a relatively low-rigidity sealing means that can pierce the distal end portion of the supply pipe is used, the sealing means can be prevented from being damaged by the pressure increase in the container body.

Hereinafter, the present invention will be described with reference to the illustrated embodiment. In FIG. 1, a hydrogen peroxide solution storage container 1 includes a bottomed cylindrical container main body 2 for storing hydrogen peroxide water. Is sealed with sheet-like sealing means 3.
As shown in FIG. 2, the sealing means 3 includes a sheet-like member 4 that seals the mouth portion of the container body 2, an opening 4a that is opened at the center of the sheet-like member 4, and the opening 4a. And a non-woven fabric 5 covering the.
The non-woven fabric 5 blocks the passage of hydrogen peroxide contained in the container body 2 but allows the passage of oxygen and water vapor. As shown in FIG. 3, at least one of them can be pierced by the tip 6 a of the supply pipe 6 that supplies the hydrogen peroxide solution in the container body 2 to the outside. The distal end portion 6a of the supply pipe 6 is sharpened so as to be easily stabbed into the sealing means 3, and has a length that allows the distal end portion 6a to reach the vicinity of the bottom of the container body 2 when stabbed.

As the material of the container body 2, it is desirable to use polyethylene having excellent stability against hydrogen peroxide water, and the material of the sheet-like member 4 is preferably a laminate film composed of an aluminum layer and a polyethylene layer. The aluminum layer is a barrier layer covering the surface of the sheet-like member 4, and the polyethylene layer is a sealant layer to be welded. This laminated film does not allow hydrogen peroxide or oxygen to pass through.
Further, the material of the nonwoven fabric 5 is preferably Tyvek (registered trademark). This Tyvek is a sheet that is bonded to continuous ultrafine fibers of polyethylene of 0.5 to 10 μm by applying high heat, and has the property of preventing the passage of hydrogen peroxide but allowing the passage of oxygen. ing.
When the laminate film and the tyvek are selected, it is possible to pierce the leading end portion 6a of the supply pipe 6 in both of them.

The polyethylene layer of the sheet-like member 4 is thermally welded to the container body 2 and fixed to the mouth of the container body 2, and the polyethylene layer of the sheet-like member 4 and the nonwoven fabric 5 are also integrally connected by heat welding. Yes.
Since the laminate film having the polyethylene layer is commercially available in various thicknesses of the polyethylene layer, a laminate film having a polyethylene layer having a suitable thickness can be easily selected.
And since this polyethylene layer becomes the same material as the container main body 2 made from polyethylene, both can be favorably and easily welded by selecting a polyethylene layer having a suitable thickness. Similarly, since this polyethylene layer is made of the same material as that of Tyvek (nonwoven fabric 5) using polyethylene, both can be heat-welded well and easily.

Furthermore, in this embodiment, a polyethylene overcap 8 that covers the sealing means 3 is attached to the mouth of the container body 2, and the sealing means 3 having low rigidity can be protected by the overcap 8. It is.
The overcap 8 includes a circular top surface portion 8a and a cylindrical portion 8b extending downward from the periphery of the top surface portion 8a. The overcap 8 extends in the circumferential direction on the inner peripheral surface of the cylindrical portion 8b. A joint groove 8c is formed.
On the other hand, an engagement convex portion 2 a extending in the circumferential direction is formed on the outer peripheral surface of the mouth portion of the container body 2, and the overcap 8 The overcap 8 is attached to the mouth of the container body 2 by engaging the engagement groove 8 c with the engagement protrusion 2 a of the mouth of the container body 2.
Since it is not necessary to remove the overcap 8 from the mouth portion of the container body 2, in order to make it difficult to remove the overcap 8 from the mouth portion of the container body 2, the overcap 8 is strongly covered and engaged with both. However, if necessary, the overcap 8 can be easily removed from the mouth portion of the container body 2 by connecting them with a screw or a known bayonet.

The overcap 8 has sufficient rigidity so that the tip of the supply pipe 6 cannot be pierced, thereby protecting the sealing means 3 having low rigidity.
On the other hand, since the overcap 8 cannot pierce the tip of the supply pipe 6, a through-hole for allowing the supply pipe 6 to be inserted into the central portion of the overcap 8 at a position superposed on the nonwoven fabric 5. 8d is formed.
The bottom surface of the container body 2 has a conical surface 2b protruding downward, and the lowermost deepest portion 2c of the conical surface 2b is the central portion of the bottom surface, whereby the lowermost deepest portion 2c and the through-hole 8d. Are aligned in the axial direction at the center of the container body 2. The conical surface 2b preferably has an apex angle of 90 degrees.

In the above configuration, the hydrogen peroxide solution is accommodated in the container main body 2, and its mouth is sealed by the sheet-like sealing means 3. An overcap 8 is fixed to the mouth of the container body 2.
The container body 2 preferably contains 5 g, 10 g, 15 g, 20 g, 25 g of hydrogen peroxide solution in advance, so that the user does not have to measure the hydrogen peroxide solution each time. It can be stored safely in a ready-to-use state.
In this state, the sealing means 3 prevents passage of the hydrogen peroxide solution, so that even if the storage container 1 falls down, the hydrogen peroxide solution does not leak to the outside.

Moreover, since the hydrogen peroxide solution accommodated in the container body 2 gradually decomposes naturally into oxygen and water, the pressure in the container increases. At this time, if the mouth of the container body 2 is sealed with a sheet-like member that does not allow oxygen to pass through, it is a soft material that can pierce the supply pipe 6 just like a laminate film. As a result, the sheet-like member swells, and in particular, there is a risk that the bonded portion between the sheet-like member and the container mouth portion is damaged.
On the other hand, since the nonwoven fabric 5 such as Tyvek allows oxygen to pass through, the pressure rise in the container can be kept low, and therefore the sealing means 3 can be prevented from being damaged.

When the container 1 is used, the tip 6a of the supply pipe 6 can be pierced into the sealing means 3 so that the tip 6a of the supply pipe 6 can be inserted into the overcap 8 without removing the seal means 3. The sealing means 3 may be pierced through the through-hole 8d.
Thereby, the hydrogen peroxide solution inside the container main body 2 can be safely and easily supplied to the outside through the supply pipe 6 without being handled directly as in the prior art.
Further, at this time, the through-hole 8d of the overcap 8 and the deepest bottom portion 2c of the conical surface 2b formed on the bottom surface of the container body 2 are formed in the central portion of the container body 2 in the axial direction. By piercing the tube 6 from the through hole 8d in the axial direction of the container body 2, the distal end portion 6a of the supply tube 6 can be easily guided to the deepest bottom portion 2c of the conical surface 2b.
Thereby, almost all of the hydrogen peroxide solution stored in the container body 2 can be sucked up from the supply pipe 6.

  In addition, in the said Example, although the sealing means 3 is comprised from the sheet-like member 4 and the nonwoven fabric 5, it is not limited to this, The sheet-like member 4 is abbreviate | omitted and only the nonwoven fabric 5 of the container main body 2 is used. The mouth may be sealed.

Sectional drawing which shows one Example of this invention. The expanded sectional view of the principal part of FIG. Sectional drawing which shows a use condition.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Storage container 2 Container main body 2b Conical surface 2c Deepest part 3 Sealing means 4 Sheet-like member 4a Opening part 5 Nonwoven fabric 6 Supply pipe 6a Tip part 8 Overcap 8d Through-hole

Claims (5)

A container body containing hydrogen peroxide water, and a sheet-like sealing means for sealing the mouth of the container body,
This sealing means prevents the passage of hydrogen peroxide water in the container body but allows the passage of oxygen, and the sealing means is a supply pipe for supplying the hydrogen peroxide water in the container body to the outside. A container for hydrogen peroxide water, characterized in that the tip can be pierced. The sealing means includes a sheet-like member that seals the mouth of the container body, an opening that is opened in a part of the sheet-like member, and a nonwoven fabric that covers the opening,
The non-woven fabric is configured to prevent the hydrogen peroxide solution from passing through the container body but allow oxygen to pass therethrough, and at least one of the sheet-like member and the non-woven fabric is the supply pipe. The hydrogen peroxide solution container according to claim 1, wherein the tip of the container can be pierced. The material of the container body is polyethylene, the material of the sheet-like member is a laminate film having a polyethylene layer, and the nonwoven fabric is a sheet obtained by bonding high-temperature continuous fibers of polyethylene of 0.5 to 10 μm with high heat , and The hydrogen peroxide solution according to claim 2, wherein the container main body and the polyethylene layer of the sheet-like member are heat-welded, and the polyethylene layer of the sheet-like member and the nonwoven fabric are heat-welded. Containment container.   4. An overcap that covers the sealing means is provided at the mouth of the container body, and a through-hole through which the supply pipe is inserted is formed in the overcap. A container for hydrogen peroxide solution as described in 1.   The bottom surface of the container body is a conical surface projecting downward, and the deepest lower end of the conical surface and the through hole are formed in the central part of the container body so as to be aligned in the axial direction. The container for hydrogen peroxide water according to claim 4.

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