JPS638629Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Purpose of the invention: ``Field of industrial application'' The present invention relates to a sealed part of a plastic container containing a drug, which is preferably sealed.

``Prior Art'' In the conventional technology, a protruding flange is provided on the outer periphery of a plastic container body in which a medicine is stored, below the opening end of the neck, and a plastic cap with a protruding flange provided on the outer periphery of the lower end is attached to the neck. The cap and container body were fitted together so that the two flanges overlapped, and ultrasonic welding was performed at the overlapping portion of the two flanges, so that the cap and the container body were integrated and sealed.

``Problems to be solved by the present invention'' Providing the protruding flange below the opening end of the neck of the container body prevents the flange of the cap and the flange of the container body from overlapping in a predetermined state when the cap is inserted. This is necessary for positioning. and,
In the conventional case, of the two flanges polymerized in this way, the lower flanges, that is, the flanges of the container body, are supported by the holding jig A, and the upper flanges, that is, the flanges of the cap, are supported by the holding jig B ( The ultrasonic welding operation was carried out between the two jigs by pressing the two jigs downward. However, in this case, the vibration caused by the ultrasonic waves is transmitted between the inside of the lower end of the cap and the outside of the upper part of the container body than the flange.
In other words, it appears in the form of friction between the outer surface of the upper end of the container body and the inner surface of the lower end of the cap, and this friction generates extremely fine plastic particles, which are then trapped inside the container body. There was a risk that it might get mixed into the medicine. Thus,
The significance of keeping the container itself in a sealed state is completely lost, and this problem must be urgently solved in ultrasonic welding operations, which have various advantages.

(b) Structure of the invention ``Means for solving the problem'' In this invention, in consideration of the fact that the influence of ultrasonic welding affects the above-mentioned fitting surface and causes inconvenience, this influence is reduced as much as possible. In order to eliminate this effect, if possible, we made the parts of the polymerized tsuba's base where the two tsuba face each other thinner.

"Function" In the present invention, when ultrasonic welding work is performed, vibrations caused by this work, due to the thin part provided at the opposing part between the welding part and the insertion part, The number of deaths was greatly reduced,
For this reason, friction that would generate extremely small particles does not occur in the insertion portion.

``Example'' The present invention is provided with a protruding collar 4 on the outer periphery of the neck downward from the open end 3 of the neck 2 of the plastic container body 1 in which a medicine is stored, and a protruding collar 5 on the outer periphery of the lower end.
A plastic cap 6 provided with a cap 6 is fitted into the neck 2 with both flanges 4 and 5 overlapping each other, and the facing portions 7 and 8 of the overlapping flanges 4 and 5 are made thin. It is something that exists.

As shown in the figure, the thin walls are formed by forming circumferential grooves 9 and 10 both from the top surface of the flange plate in the cap and from the bottom surface in the container body. Therefore, even if the main body is placed as shown in the figure, the cap is placed on the top surface of the main body as shown in the figure, and even if the circumferential grooves are placed facing each other, that is, tied together, they will end up being relative to each other. There is no difference in the fact that the portion where the

(c) Effect of the invention ``Effect of the invention'' By forming thin-walled parts at the locations mentioned above,
The influence caused during ultrasonic welding work, mainly vibration, does not reach from the welding part to the cap insertion part. Even if there is a ripple effect, it will be extremely weak and there is no risk of extremely fine powder being generated due to the friction of the insertion part as described above, and therefore The medicine is sealed cleanly.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of the cap and the upper part of the container main body during ultrasonic welding, FIG. 2 is a longitudinal sectional front view of the cap, and FIG. 3 is a longitudinal sectional front view of the upper part of the container main body. 1... Container body, 2... Neck of container body, 3...
...Opening end of the neck, 4...Protruding collar on the outer periphery of the neck, 5...
...Protruding collar on the outer periphery of the lower end of the cap, 6...Cap,
7... Thin wall part of tsuba 4, 8... Thin wall part of tsuba 5, 9...
...A circumferential groove provided on the tsuba 5, 10...A circumferential groove provided on the tsuba 4.

Claims (1)

[Scope of utility model registration request] A protruding flange is provided on the outer periphery of the neck below the opening end of the neck of the plastic container main body in which the medicine is stored, and a plastic cap with a protruding flange on the outer periphery of the lower end is attached to the neck, with both flange overlapping each other. The drug sealed container is fitted into the drug sealed container in such a manner that the overlapping flange root portion has a thin wall at the opposing portion, and ultrasonic welding is performed on the outer side of the thin wall portion.