JPH0441862Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Purpose of the invention [Field of industrial application] This invention relates to a stopper attached to the contents outlet of an infusion container, and in particular to its cover cap.

[Prior Art] An infusion container has a stopper attached to the content outlet located at the upper end of the container, and when taking out the content of the infusion solution from the infusion container, the infusion container is hung upside down. The infusion solution is dripped through the hollow needle inserted into the stopper.

Conventionally, such a stopper has been used, for example, a third stopper.
There is a stopper 101 as shown in the figure.

That is, the plug body 101 consists of a plug body 102 and a cover cap 103, and the plug body 102 is connected to the shaft 10.
A cylindrical body 107 (for example, the cylindrical body 107 is integrally formed from three parts 108, 110, 111) having a partition wall 106 that blocks the flow passages 105 in four directions; 10
The cover cap 103 is provided with an elastic plug material 112 for blocking the elastic plug material 1 at a position where the elastic plug material 112 is sandwiched between the cover cap 103 and the partition wall 106 in the direction of the axis 104.
The plug body 102 is engaged with the plug body 102 by means of heat sealing or the like while covering the outer surface of the plug body 12 . The contents of the infusion solution are filled into an infusion container and sealed, and then retorted.

When using such a plug 101, it is sufficient to remove the cover cap 103 and pierce the surface of the elastic plug 112 with a liquid sampling needle made of a hollow needle. On the other hand, it does not fall off, is easy to handle, and is hygienic.

[Problems to be Solved by the Invention] However, in the closure of such an infusion container, in order to prevent bacteria etc. from entering the infusion, the surface of the elastic closure material 112 and the elastic closure material 112 and the cover cap 103 must be It is necessary to keep the gap 120 between the two parts clean, and for that purpose, the heat seal part 113 needs to be healthy and the gap 120 needs to be completely airtight.

However, in the conventional stopper 101, it is difficult to check from the outside whether the heat seal portion 113 of the cover cap 103 completely seals the inside.

This idea was made in view of the above circumstances, and it is possible to perform the retort treatment process with the surface of the elastic plug material covered with the cover cap, and to improve the sealability of the cover cap and the soundness of the heat-sealed part. The object of the present invention is to provide a stopper with a cover cap for an infusion container whose properties can be checked from the outside.

(b) Structure of the invention [Means for solving the problem] In response to this purpose, the stopper with a cover cap for an infusion container of the present invention is a stopper attached to an infusion container, which comprises a stopper main body and a cover. The stopper main body consists of a cylindrical body with both ends open, a partition formed integrally with the cylindrical body and blocking a flow path in the axial direction of the cylindrical body, and a cap on one side of the partition. an elastic plug attached to the cylindrical body to close the flow passage; the cover cap has a contour capable of covering the end of the one side of the cylindrical body; It has a top plate that is heat-sealed with a sealing material in between, and the top plate is characterized in that the thickness of the center portion is smaller than the thickness of the peripheral portion.

The details of this invention will be explained below with reference to the drawings showing one embodiment.

In FIGS. 1 and 2, 1 is a stopper with a cover cap for an infusion container. A stopper 1 with a cover cap for an infusion container consists of a stopper main body 2 and a cover cap 3.

The plug main body 2 includes a cylindrical body 7 with both ends open and having a flow passage 5 in the axial 4 direction, a partition wall 6 formed integrally with the cylindrical body 7 and blocking the flow passage 5, and a partition wall 6 on one side of the partition wall 6. An elastic plug 8 is attached to the cylindrical body 7 and blocks the flow path 5. Here, the cylindrical body 7 has three parts: an outer plug body 11, an inner plug body 12, and a welding member 13.
It consists of two parts. The outer stopper 11 is a cylindrical body with both ends open, and a flange 9 for adhesion to the container is integrally molded on one end, and the partition wall 6 is integrally molded on the inner surface. The partition wall 6 divides the internal space of the outer plug body 11 into an axially forward space 14 and an axially rear space 15.
It is divided into two parts and has a thin part 6a that can be easily pierced with a hollow needle.

A cylindrical inner plug 12 is engaged with the inner side of the space 14 side portion of the outer plug 11, and a welding member 13 is welded overlay on the joint surface of the two, and the inner plug 12 is attached to the outside. It is designed not to fall off from the stopper 11.

The inner plug body 12 has a flange portion 16 projecting inward, and an annular groove 1 is formed between the flange portion 16 and the partition wall 6.
form 7. An annular sealing protrusion 21 is formed around the flange portion 16 and protrudes forward in the four axial directions.

The elastic plug material 8 has its peripheral edge 8a fitted into the groove 17 to block the flow path 5 in the axial 4 direction. The outer surface of the elastic plug material 8 is not necessarily flush with each other, but has conical recesses (not shown) formed at multiple locations to facilitate the penetration of a hollow needle, and the outer surface is thicker than other parts. may be made smaller.

The cover cap 3 is heat-sealed to the plug body 2 at the sealing protrusion 21 via the sealing material 24 to cover the surface of the elastic plug material 8 and sealing it into the space 14.
It is sealed inside.

That is, the cover cap has a top plate portion 23 having a contour capable of covering the end of the stopper main body 2 on the space 14 side,
A shallow cylindrical portion 22 hangs down from the edge of the top plate portion 23 in the direction of the axis 4. A sealing material 24 is provided on the inner surface of the top plate portion 23.
is attached by adhesion, temporary adhesion, fitting, etc., and the surface of the sealing material 24 is attached to the sealing protrusion 2.
1, the cover cap 3 is releasably adhered to the plug body 2.

The sealing material connects the cover cap 3 to the sealing protrusion 2.
1 is for adhering to the plug body 2, but it may be attached to the inner surface of the cover cap in advance by adhesive or temporary adhesion, or it may simply be attached to the cover cap so that it does not come off from the cover cap. It may also be one that is fitted onto the inner surface of the cover cap and then adhered to the inner surface of the cover cap at the same time when the cover cap plug main body 2 is heat-sealed by induction heating or the like.

In any case, when the cover cap 3 is peeled off from the plug body 2, the sealing material 24 is removed from the plug body 2.
At this time, it is necessary that the adhesive strength between the sealing material 24 and the cover cap 3 is equal to the adhesive strength between the sealing material 24 and the plug body 2. It is necessary that the strength is greater than that of the sealing material 24.
select a structure or material that satisfies such conditions.

Such a sealing material 24 is made of a laminate material containing aluminum foil, for example, a cylindrical body 7.
When the top plate part 23 is made of polypropylene, a polypropylene film is laminated on one side of the aluminum foil, and a laminate film of polypropylene and polyethylene is laminated on the other side. The side thereof can form a sealing surface with the sealing ridge 21, and in this case, the cap 3 is releasably adhered to the sealing ridge 21 by high-frequency sealing at the sealing material 24. .

What is important here is that the thickness of the top plate portion 23 is not uniform, and the thickness t ₁ of the central portion 23a is different from that of the peripheral portion 23b.
The wall thickness is smaller than _t2 .
That is, the upper surface 25 of the top plate portion 23 is flush with the other, whereas the lower surface 26 has its center portion 26a flush with the peripheral portion 2.
A concave portion 27 is formed which is depressed from 6b and whose lower end is open. The wall thicknesses t ₁ and t ₂ can be set to, for example, t2 = 1.0 mm and t ₁ =0.7 mm.

[Function] The thus constructed stopper with cover cap for infusion container 1 is integrated as a whole and has no exposed weak parts or convex parts, so it is strong against external forces and suitable for handling by machines.

The sterilization process can be carried out by filling an infusion container (not shown) with the contents and heat-sealing the infusion container stopper 1 with a cover cap at the flange 9 to the mouth of the infusion container. teeth
A method such as heating in an atmosphere of 115°C for 30 minutes and then cooling can be adopted.

During this cooling, the temperature of the gas in the space 14 begins to drop, and the pressure inside the space 14 becomes negative, and the central part 23a of the top plate part 23, which has a small wall thickness, deforms inward in the axis 4 direction, and the surface becomes flat as shown in FIG. Top surface 2
A recess 28 is formed in 5. Due to the high temperature of sterilization, the top plate portion 23 deforms more easily than at room temperature, and the depth h of the recessed portion 28 with the open top end due to this deformation reaches its maximum immediately after heating, and
When t ₂ = 1.0 mm and t ₁ = 0.7 mm, the depth reaches approximately 0.5 mm, which is a depth that can be sufficiently detected from the outside by palpation, visual inspection, or by any inspection machine such as the distance meter 31.

On the other hand, if the seal of the cover cap 3 is incomplete, there will be no difference in air pressure between the space 14 and the outside space, so such a recess 28 will not be formed. It is possible to distinguish and check this.

When using the contents, the cover cap 3 is peeled off and a hollow needle is pierced through the elastic plug material 12, but the elastic plug material 12 is kept as clean as when it was manufactured and is very clean. Hygienic.

Even if the tip of the stopper 1 with a cover cap for an infusion container is directed downward, the inner stopper held down by the welding member 13 will not fall off due to gravity.

(c) Effects of the invention As is clear from the above explanation, according to this invention, the sterilization process can be performed with the surface of the elastic plug material covered with the cover cap, and the sealing performance of the cover cap is perfect. A plug material with a cover cap for an infusion container that can be checked from the outside can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view showing a stopper with a cover cap for an infusion container according to an embodiment of this invention, and Fig. 2 is a deformation of the stopper with a cover cap for an infusion container shown in Fig. 1 during the sterilization process. FIG. 3 is a vertical cross-sectional view showing a conventional plug body. 1...Plug with cover cap for infusion container, 2...
...Plug body, 3...Cover cap, 4...Shaft,
5... Distribution path, 6... Partition wall, 6a... Thin wall portion,
7... Cylindrical body, 8... Elastic plug material, 9... Flange, 11... Outer plug body, 12... Inner plug body, 13
... Welding member, 14, 15 ... Space, 16 ... Flange portion, 17 ... Groove, 21 ... Seal protrusion,
22... Cylindrical part, 23... Top plate part, 24... Sealing material, 25... Top surface, 26... Bottom surface, 26a... Center part, 27... Recessed part with open bottom end, 28... Recessed part with open top end , 31... Distance meter, 101... Stopper, 1
02...Bung body, 103...Cover cap, 1
04...Shaft, 105...Flow path, 106...Partition wall, 107...Cylindrical body, 108, 110, 111
... part, 112 ... elastic plug material, 113 ... heat sealing part.

Claims (1)

[Scope of utility model registration request] A stopper to be attached to an infusion container, consisting of a stopper main body and a cover cap, the stopper main body being formed integrally with a cylindrical body with both ends open, and configured to prevent flow in the axial direction of the cylindrical body. The cover cap is provided with a partition wall for blocking the flow path and an elastic plug attached to the cylindrical body on one side of the partition wall to close the flow passage, and the cover cap is arranged to close the end of the cylindrical body on the one side. A top plate portion having a coverable contour and heat-sealed to the stopper body at the end thereof via a sealing material, the top plate portion having a thickness smaller at the center than at the peripheral portion. A stopper with a cover cap for an infusion container, characterized in that: