JPS627644A - Melt-sealing ampule and its melt-sealing method - Google Patents

Abstract

PURPOSE:To obtain the titled ampule without generating glass chips when melt-sealed and without any defective sealing such as strains and protrusions by thickly forming the foremost end of a filling tube part in a melt-sealing ampule consisting of a vessel main body and the filling tube part. CONSTITUTION:The heating site 6 at a position about 2-3mm downward from the leading end 5 of a filling tube part is heated and melted by a burner 7, etc., while rotating an ampule 1 consisting of a vessel main body 2 to contain a liq. chemical and a small bore filling tube part 3. Consequently, the leading end 5 is melt-sealed and a melt-sealed part 4 which is fairly thicker than the peripheral glass wall is formed. Chips released from the leading end of the filling tube part when melt-sealed are not generated by this method and the desired ampule can be advantageously obtained from the view point of process and quality control.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a melting ampoule filled with a liquid such as an injection and a method for melting the ampoule.

(Prior Art) Conventionally, an ampoule container is composed of a container body and an injection tube portion formed with a small diameter, and the upper tip of the injection tube portion is closed off by an arched ceiling wall surface.

This type of ampoule is made by injecting a predetermined amount of liquid such as an injection through the injection tube, heating and melting the inside of the injection tube using a burner flame, and then taking the upper tip and stretching it. It is manufactured by tapering, cutting, and then melting to form an arched fused tip.

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・However, with such ampoules, the tip of the ampoule is incompletely sealed, which tends to cause poor sealing, and even if the ampoule is sealed, there may be distortions such as thick or thin parts on the wall of the melted area. Defective ampoules that are vulnerable to shocks may occur because they are sharp or have elongated edges that remain and become sharp or droop downward in a candy-like manner. Therefore, airtightness and safety are required. There was something that was not suitable as an ampoule.

Furthermore, according to the above-mentioned melting method, the injection tube portion of the ampoule before melting must be formed to be considerably longer than the neck of the completed ampoule, so that the filling nozzle must be inserted deeper into the injection tube. Not only does the filling process take a long time and contamination may occur due to dripping of filling liquid in the middle of the injection tube, but also the cut tip of the injection tube above the melted part must be disposed of. However, there are drawbacks such as the generation of dust and the generation of dust during cutting, which is disadvantageous in terms of quality control.

(Means for Solving the Problems) Therefore, the technical problem of the present invention is to solve the above-mentioned conventional problems, to prevent the formation of pinholes at the tip of the injection tube, and to prevent melting such as distortion and sharpness. The purpose of this invention is to provide an ampoule that does not have closing defects.

Another object of the present invention is to eliminate the generation of chips at the tip of the injection tube during melting and closing.

Our objective is to provide an extremely excellent melting method in terms of process control and quality control.

The technical means of the present invention to solve this technical problem is a melt-closed ampoule consisting of a container body and an injection pipe part, in which the most advanced melted part of the injection pipe part is formed thick. be.

The present invention relates to a melting means for heating and melting the opened end portion of the injection tube of the ampoule.

(Effects of the present invention) The melt-closing ampoule of the present invention has the above structure.

It has the following effects.

In other words, (1) the glass layer at the closed end of the injection tube is covered with a thick, almost hemispherical shape, and the glass layer is melted and closed, resulting in sharp pieces remaining as a result of melting, and distortions in thickness and shape. No defects or poor welding such as pinholes occur.

(2) Because the tip is thick, it is resistant to shocks such as drops (and will not break), so it can be used as an ampoule, making it easy to insert the filling nozzle.

In addition to reducing the chances of liquid dripping from the filling nozzle onto the wall of the injection tube and contaminating the wall, it is extremely advantageous in terms of manufacturing efficiency because the melting operation can be performed by only partially modifying the conventional manufacturing equipment.

(4) Debris removed from the tip of the injection tube as in the conventional method (
It is excellent for advanced quality control, as it does not generate chips or dust such as glass shards when cutting.

(Example) Fig. 1 shows a sectional view of the melting ampoule (1) of the present invention, which consists of a container body (2) for storing a drug solution and an injection tube part (3) formed with a small diameter. The distal end of the injection tube section (2) is welded closed to form a welded section (4).

The melted part (4) is formed considerably thicker than the surrounding glass wall forming the ampoule. For example, in the case of a normal ampoule with a resistance of 1 rnL to 20 rnL, the thickness H) from the tip (5) becomes a thick fused portion (4) having 2 to 3 ag.

When manufacturing such an ampoule, as shown in Figure 2, while rotating the ampoule, insert two
The heated part (6), which is at a position 3 degrees lower, is heated and melted.

Heating irradiation angle (α) of melt heating means such as burner tube (7)
The angle) is preferably in the range of about 8° upward from the horizontal (Oo).

Figure 3 shows an ampoule rotating as it passes in front of four boundary gas burners (7a) and four subsequent gas burners (7a), and the tip of the injection tube is melted by the pre-burning gas burner (7a). A manufacturing example in which the gas is then melted and closed using a subsequent gas burner (7b) is shown.

In addition to gas burner heating, the heating means may be electrical or optical means such as radiant heat melting using a heating wire or the like. When the most advanced part of the injection tube is heated and melted in this way, it is possible to form a melted ampoule in which the melted part has a thick layer, and chips (glass debris) are also generated. Never.

[Brief explanation of the drawing]

FIG. 1 is a cutaway side view of the ampoule of the present invention. FIG. 2 is a cutaway side view showing the ampoule of the present invention in a melted state. FIG. 3 is a perspective view showing an embodiment of the method of melting the ampoule of the present invention. FIGS. 5(A) to 5(A) are cut-away side views of a conventional ampoule and are explanatory diagrams showing the steps from filling to closing the conventional ampoule. (1) Ampoule (2) Container body (3) Injection tube (4) Melting part (5) Tip of melting part (6) Heating part (7) Burner

Claims (1)

[Scope of Claims] 1. A meltable ampoule consisting of a container body and an injection pipe part, characterized in that the most advanced melted part of the injection pipe part is formed thick. 2. A container. A method for melting and closing an ampoule, which is characterized by heating and melting the open end portion of the injection tube of the melting ampoule consisting of a main body and an injection tube.