JPH0447085Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention relates to a highly airtight container.

(Prior Art) Conventionally, this type of container has been made by fitting a rubber stopper into the opening of a glass vial, and fixing an aluminum cap or a vinyl chloride shrink film cap to cover the rubber stopper. Airtightness is ensured by simply covering the opening of a glass vial with an aluminum sheet or by using something called an ampoule.

(Problems to be solved by the invention) In the conventional technique, if the vial is made of glass, it is dangerous if it breaks, and can also cause infectious diseases, so it is difficult to handle it after it is broken, and to prevent it from breaking. Therefore, care must always be taken when handling it.

The container described in the previous section has the advantage of being reusable, but the rubber stopper may come off the vial opening, so it is covered with an aluminum cap or vinyl chloride shrink film, making the structure complicated. This method is expensive and has drawbacks such as rubber debris getting into the vial when the injection needle is inserted. Once the aluminum sheet container has been used, it cannot be reused, and
In the case of the ampoule, when the ampoule is broken, the glass waste gets into the ampoule, similar to the rubber waste in the above, and furthermore, once the ampoule is broken, it cannot be reused.

(Means for Solving the Problems) This invention was developed by the present inventor as a result of intensive research in order to correct the problems of the conventional containers mentioned above.

That is, to explain this invention using the reference numerals in the drawings corresponding to the embodiments, it has a vial 2 having an opening 1, an annular leg 4 protruding from the back surface of a substrate 3 with a cross section of A cap 6 with an aluminum foil 5 integrally molded on the back surface outside the legs 4 is made of a resin with a high gas barrier property, and a film 7 with a high gas barrier property is laminated on the exposed surface of the aluminum foil 5, and, This is a container made by tightly fitting the annular foot 5 of the cap 6 into the opening 1 of the vial 2, bringing the film 7 surface of the cap 6 into close contact with the thick surface 8 of the opening of the vial 2, and gluing the contact portion. . The adhesion is specifically performed using ultrasonic waves or high frequency waves.

(Function) According to the configuration of the present invention, the aluminum foil 5 is integrally molded with the cap 6 and therefore adheres to the back surface of the cap 6. The annular legs 4 of the cap 6 are slightly wider in a C shape. Therefore, if the outer diameter D of the outer base of the annular leg 4 and the inner diameter d of the vial 2 are matched, the annular leg 4 can be pushed into the opening 1 of the vial 2, and after fitting, the annular leg 4 can be pushed into the opening 1 of the vial 2. leg 4
Due to the restoring force due to the elasticity of the annular foot 4, the annular foot 4 comes into close contact with the inner periphery 9 of the vial 2, and at the same time, the base of the annular foot 4 comes into close contact with the opening 1 of the vial 2. Then, the thick side 8 of the vial 2 and the cap 6
When the close contact portion with the surface of the film 7 is bonded by ultrasonic waves or high frequency waves, the film 7 laminated on the aluminum foil 5 and the vial 2 are both made of resin, so that both are welded together. In this way, the aluminum foil 5 is interposed in the welded part and is tightly adhered from above and below, and together with the blocking performance of the aluminum foil 5 itself,
The airtightness of the area is ensured. Furthermore, due to the synergistic effect of this resin having extremely good gas-barrier properties, the container of the present invention has excellent airtightness as a whole. Further, when the cap 6 is pulled upward, the cap 6 is separated together with the aluminum foil 5 integrally formed on the cap 6. At this time, the film 7 laminated to the aluminum foil 5 remains on the thick wall surface 8 of the vial 2. Further, the pair of vial 2 and cap 6 in this case can be reused as a container.

(Example) As shown in FIG. 4, a vial 2 having an opening 1 and a cap 6 having an annular foot 4 integrally projected from the back side as shown in FIGS.
Molded from ET (polyester resin) material. At this time, when molding the cap 6,
When aluminum foil 5 was integrally molded into a donut shape on the surface extending from the base of the annular leg 4 to the outer periphery, it was adhered to the back surface and molded. Further, a PET film 7 is laminated on the surface of the aluminum foil 5. Then, attach the ring leg 4 of the cap 6 to the vial 2.
When the cap 6 was inserted into the opening 1 of the cap 6, the 5 surfaces of the aluminum foil of the cap 6 and the 7 surfaces of the film of the vial 2 came into close contact with each other, and then the close contact portion was bonded using ultrasonic waves or high frequency. A PET film 7 similar to that of the vial 2 is laminated on the surface of the aluminum foil 5, so that the PET film 7 is laminated on the surface of the aluminum foil 5.
The film 7 was welded to the thick wall surface 8, and the cap 6 was tightly attached to the vial 2.

(Effects of the invention) According to this invention, since the aluminum foil 5 is interposed in the area where the vial 2 and the cap 6 meet, the airtightness between them in the sealed state is extremely high.

Furthermore, since PET materials such as polyester resins have better gas-barrier properties than ordinary resins, the synergistic effect with the aluminum foil 5 allows for containers with higher airtightness. be able to. Furthermore, even after the cap 6 and vial 2 are separated, the pair of cap 6 and vial 2 can be reused as a normal container in various fields.

[Brief explanation of the drawing]

1 is a longitudinal sectional view, FIG. 2 is an explanatory sectional view of the cap, FIG. 3 is a bottom view of the cap, and FIG. 4 is an explanatory sectional view of the vial. In the figure, 1 is an opening, 2 is a vial, 3 is a substrate,
4 is an annular foot, 5 is aluminum foil, 6 is a cap, 7 is a film, and 8 is a thick side.

Claims (1)

[Claims for Utility Model Registration] 1. A vial 2 having an opening 1 and an annular foot 4 protruding from the back side of the substrate 3 with a cross-sectional shape of H, and an aluminum foil on the back side outside the annular foot 4. 5
The caps 6 are made of a resin with high gas barrier properties, and a film 7 with high gas barrier properties is laminated on the exposed surface of the aluminum foil 5. The container is made by tightly inserting the leg 5, bringing the film 7 surface of the cap 6 into close contact with the thick surface 8 of the opening of the vial 2, and gluing the contact portion. 2. The container according to claim 1, wherein the adhesive is ultrasonic. 3. The container according to claim 1, wherein the adhesion is by high frequency.