JP5904441B2 - Ampoule container made of synthetic resin - Google Patents

Description

  The present invention relates to an ampoule container made of a synthetic resin that stores medicines and nutrients.

  As an ampoule container for storing medicines, nutrients, etc., for example, as shown in Patent Document 1, a shoulder portion having a diameter reduced upward is continuously connected to the upper end of a bottomed cylindrical barrel portion, and the shoulder portion is provided with this shoulder portion. A resin ampule container in which a neck portion having a small inner diameter in a top tube shape is erected, a notch portion is formed at a boundary portion between the neck portion and a shoulder portion, and a combined portion of the trunk portion and the shoulder portion is biaxially stretch blow molded Are known. This ampoule container is opened at the weakened part formed by the cut part by relatively changing the body part side and the neck part side, but the shape and dimensions of the cut part are selected in advance By setting, the weakened portion formed by the cut portion is easily broken, and the content liquid is prevented from being scattered due to the impact at the time of opening.

JP 2000-037442 A

  However, in the prior art described in Patent Document 1, in the ampule container, there is a conventional problem that the residual content liquid remains in the neck due to the adhesive force and surface tension of the content liquid. Therefore, there is a problem that the residual content liquid of the neck portion scatters or flows out at the time of opening.

  That is, as shown in FIG. 5, the conventional ampoule container generally has a residual content liquid n in the head 6 corresponding to the neck, separately from the content liquid N stored in the main body 1. Depending on the correlation between the diameter B and the height C in the head 6, the phenomenon of being located in the head 6 without flowing down to the main body 1 against its own weight occurs due to the action of the adhesion force and surface tension. To do. This state is exhibited in a state in which the surface tension of the residual content liquid n is uniformly applied to the peripheral edge of the lower end liquid surface n1 of the residual content liquid n adhering to the inner peripheral surface portion 7.

  Thus, if the weakened portion 9 is broken while the residual content liquid n is located in the head 6, the residual content liquid n is scattered or flows out of the container by this impact. Further, the fact that the residual content liquid n remains in the head 6 means that the amount of the content liquid N accommodated in the main body 1 is reduced by the amount of the residual content liquid n, which is effective. This causes a problem that the amount of the content liquid N used in the process is insufficient.

  Therefore, the present invention was devised to solve the above-mentioned problems in the prior art, and it is a technical problem to prevent the residual content liquid from being positioned in the head corresponding to the neck when the container is upright. Therefore, it is an object to prevent the content liquid from being scattered or outflowed at the time of opening, and to obtain an appropriate amount of the content liquid.

The main structure of the means of the present invention for solving the above problems is as follows .
A bottomed cylindrical main body portion for storing the contents fluid, and closed top cylindrical head portion which is erected continuously provided on the upper end of the body portion, it is formed in the boundary portion of the main body portion and the head portion, a body portion A weakened portion that is broken by relative fluctuations of the head,
Providing at least one vertical ridge-shaped vertical rib extending downward from the lower side of the weakened portion on the inner peripheral surface;
The vertical rib is configured to pass through the inner peripheral surface portion to which the peripheral edge of the lower end liquid surface of the residual content liquid located in the head is attached,
It is in.

  The sealed storage of the content liquid is achieved by injecting a predetermined amount of the content liquid from the upper end opening in the open state of the head, and then sealing the upper end opening of the head by thermal processing. For this reason, the content liquid is accommodated and handled while the main body and the head are in communication with each other, so that the content liquid freely enters and exits from the main body into the head.

  When the ampoule container is in an upright position, the content liquid that has entered the head adheres to the inner peripheral surface due to its adhesive force and surface tension, and remains in the head as residual content liquid against gravity. I will try.

  With respect to the adhesion of the residual content liquid that has entered the head, at least one vertical rib is formed in a protruding shape on the inner peripheral surface portion where the lower end liquid level of the residual content liquid is located. Therefore, the smoothness of the inner peripheral surface portion is lost due to the vertical ribs. For this reason, the vertical ribs obstruct the application of the surface tension of the residual content liquid along the inner peripheral surface portion, and the residual content liquid can exert a force to stay in the head. It becomes impossible. Therefore, the content liquid in the head naturally flows down to the main body, and no residual content liquid is generated in the head.

  Further, since the protrusion-shaped vertical rib is positioned lower than the weakened portion, the vertical rib does not mechanically reinforce the weakened portion.

  Furthermore, since the vertical rib is formed only on the inner peripheral surface, the vertical rib does not affect the appearance of the ampoule container.

  In another configuration of the present invention, the vertical rib in the main configuration described above is configured by a vertical rib-shaped vertical rib formed on the inner peripheral surface of a bottomed cylindrical preform for forming an ampoule container. It is.

  In the case where the vertical rib is constituted by the vertical rib strip formed on the inner peripheral surface of the bottomed cylindrical preform for forming an ampoule container, the preform is ampoule by a normal biaxial stretch blow molding means. By forming into a container, the vertical rib strip of the preform can be formed into the vertical rib of the ampoule container.

  Another configuration of the present invention is a configuration in which a plurality of, preferably 3 to 4, longitudinal ribs having the main configuration described above are provided at intervals.

  In the case where a plurality of vertical ribs, preferably 3-4, are provided at intervals, the smooth peripheral length of the inner peripheral surface portion where the bottom liquid surface of the residual content liquid is located is divided by the vertical ribs. As a result, the smooth portion with a sufficiently long circumference is lost, so that the surface tension of the residual content liquid cannot be evenly applied along the inner circumference, and it is impossible to exert sufficient adhesion. It becomes possible.

  Another configuration of the present invention is such that the lower end of the longitudinal rib of the main configuration described above is positioned at the lower end of the main body.

  In the case where the lower end of the vertical rib is positioned at the lower end of the main body portion, the vertical rib-shaped vertical rib strip formed on the vertical rib is formed to be continuous to the lower end of the preform inner peripheral surface. Therefore, there is no possibility that the vertical rib strip will adversely affect the mold release of the preform that has been injection molded.

Since the present invention has the above-described configuration, the following effects can be obtained.
In the main configuration of the ampoule container in the present invention, the content liquid that has entered the head always flows down naturally into the main body, and does not cause residual content liquid in the head, so the head is broken from the main body. Thus, when the contents are opened, the residual content liquid in the head scatters or flows out, causing no inconvenience, and a good opening operation can always be obtained.

  Further, since the ridge-shaped vertical rib does not mechanically reinforce the weakened portion, the breaking operation of the weakened portion, that is, the opening operation by hand of the ampoule container can be performed reasonably and satisfactorily. Furthermore, since the vertical rib is formed only on the inner peripheral surface, the vertical rib does not affect the appearance of the ampoule container, and it is not necessary to change the external shape of the ampoule container. The conventional biaxial stretch blow mold can be used as it is, thereby preventing an increase in molding cost.

  In the case where the vertical rib is composed of the vertical rib strip formed on the inner peripheral surface of the bottomed cylindrical preform for forming the ampule container, the preform vertical rib strip is used as the vertical rib of the ampule container. Since it can be formed, the formation of the vertical rib can be achieved easily and without difficulty.

  In the case where a plurality of, preferably 3 to 4, longitudinal ribs are provided at an interval, the surface tension of the residual content liquid cannot be applied evenly along the inner peripheral surface, and sufficient attachment is provided. Since it becomes impossible to exert the attachment force, the natural flow of the content liquid located in the head to the main body side can be surely obtained, and the generation of the residual content liquid in the head is surely prevented. .

  In the case where the lower end of the vertical rib is positioned at the lower end of the main body part, the vertical rib strip does not have an adverse effect on the mold release of the preform formed by injection molding. Smooth and good injection molding can be obtained.

It is a whole longitudinal cross-sectional view which shows one embodiment of this invention. FIG. 1 is an enlarged view of a main part of the embodiment shown in FIG. It is the top view of one Example which cut | disconnected the arrow along the AA line in FIG. In FIG. 2, it is the top view of the other Example which cut | disconnected the arrow along the AA line. It is a whole longitudinal cross-sectional view for demonstrating the outline | summary of a prior art.

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS.
In this embodiment, the side on which the head 6 is located with respect to the main body 1 is defined as the upper side, and the opposite side (lower side in FIG. 1) is defined as the lower side.

The ampule container made of synthetic resin is biaxially stretched and blow-molded into a bottomed cylindrical shape, and includes a main body 1 that contains the content liquid N, and a headed cylindrical head 6 that is erected on the upper end of the main body 1. And a weakened portion 9 formed at the boundary between the main body 1 and the head 6 and broken by relative fluctuations such as bending of the main body 1 and the head 6, and the residual content liquid n is contained in the head 6. When positioned, the surface tension of the residual content liquid n acts evenly along the inner peripheral surface portion 7 on the inner peripheral surface portion 7 to which the peripheral edge of the lower end liquid surface n1 of the residual content liquid n adheres. It is configured by forming a vertical rib 8 having a vertical ridge shape for preventing the above.

  A main body 1 (see FIG. 1) includes a cylindrical body 2 with a bottom, a shoulder 3 that is erected continuously at the upper end of the body 2 while being reduced in a stepped shape upward, and the shoulder 3 is constructed by continuously connecting a lip portion 5 having a outer rim structure through a neck portion 4 having a small outer diameter, and the head portion 6 is thinly formed by cutting the lip portion 5 from the outside. It is connected via the molded weakened part 9. The lower part of the main body part 1 below the mouthpiece part 5 is a part subjected to biaxial stretch blow molding, whereas the mouthpiece part 5 is a part which is not subjected to biaxial stretch blow molding and has a thickness. . Since the mustache portion 5 is thick, the weakened portion 9 formed by cutting or the like between the thick head 6 described later is almost deformed by the mustache portion 5 and the head 6. Therefore, it will be supported stably and it will be fractured stably and satisfactorily.

  The head 6 (see FIG. 1) is a portion that is not biaxially stretch blow-molded like the mouthpiece 5 and is formed relatively thick from the beginning. The peripheral surface suddenly expands downward in the portion from the neck 4 to the upper end of the shoulder 3. For this reason, when the residual content liquid n is located in the inner peripheral surface area from the head 6 to the main body 1, the lower end liquid level n1 of the residual content liquid n (see FIG. 5). An inner peripheral surface portion 7 in which is located is formed.

  The inner peripheral surface portion 7 is formed with a plurality of vertical ridge-shaped vertical ribs 8 spaced apart from each other to prevent the surface tension of the residual content liquid n from acting evenly along the circumferential direction. In the first embodiment shown in FIGS. 1 to 3, three vertical ribs 8 are provided for each equal central angle. Each vertical rib 8 has its upper end positioned lower than the weakened portion 9 (see FIGS. 1 and 2) and its lower end positioned at the lower end of the main body 1 (see FIG. 1). Therefore, the vertical rib 8 is not located in the weakened portion 9, and the weakened portion 9 is not structurally reinforced.

  The vertical ribs 8 are formed by vertical rib strips 8a formed on the inner peripheral surface of a bottomed cylindrical preform p (see the two-dot chain line in FIG. 1) for forming an ampoule container. The vertical rib strip 8a is provided from the lower part to the bottom, which is the lower end, of the weakened portion 9 of the preform p, and is positioned along the mold release direction of the preform p. The preform p can be smoothly and satisfactorily released from the injection mold without disturbing the release of the reform p from the mold.

  As shown in FIGS. 3 and 4, it is effective to use three or four vertical ribs 8 arranged at equal central angles. For example, when two vertical ribs 8 are provided for each equal central angle, the degree of division of the inner peripheral surface portion 7 is small (the smooth surface area of the inner peripheral surface portion 7 is increased), and the residual by the vertical ribs 8 is left. There is a risk of dissatisfaction that the action of hindering the surface tension from acting uniformly on the content liquid n is not sufficient. On the other hand, when five or more vertical ribs 8 are provided for each equal central angle, the structure becomes complicated as the number of the vertical ribs 8 increases, and the unevenness of the inner peripheral surface of the main body 1 increases. Therefore, as described above, the number of the longitudinal ribs 8 is more preferably 3-4. However, the number of the vertical ribs 8 should be set according to the size of the inner diameter of the head 6 and is not limited.

  As mentioned above, although the structure of this invention and its operation effect were demonstrated along embodiment example, embodiment of this invention is not limited to the said embodiment example, For example, the vertical rib strip 8a of the preform p Is not specified as a structure formed with a structure extending to the bottom of the preform p, and the shape of the preform p is formed on the shoulder 3 and the body 2 with respect to the portion formed on the neck 4. In the case where the inner diameter of the portion to be formed is a small size, it is also possible to adopt a configuration in which the lower end of the vertical rib strip 8a is positioned at the portion formed in the shoulder portion 3.

  Since the ampoule container made of the synthetic resin of the present invention does not produce a residual content liquid in the head, it can be used safely and cleanly and the amount of the content liquid can be accurately maintained. As a container, it can be applied in a wide field.

DESCRIPTION OF SYMBOLS 1; Main body part 2; Body part 3; Shoulder part 4; Neck part 5; Mouth part 6; Head part 7; Inner peripheral surface part 8; Vertical rib 8a; Content liquid n1; bottom liquid level p; preform

Claims (4)

Bottomed tubular body portion for storing the contents solution (N) and (1), the upper end in the erected continuously provided have been closed top tubular head portion of the body portion (1) (6), said body portion (1) and a weakened portion (9) formed at a boundary portion between the head portion (6) and broken by a relative variation of the main body portion (1) and the head portion (6), At least one vertical rib-like vertical rib (8) extending downward from the lower part of the weakening part (9) is provided, and the vertical rib (8) is a residual content liquid located in the head (6). An ampoule container made of synthetic resin, characterized in that it passes through the inner peripheral surface portion (7) to which the peripheral edge of the lower end liquid surface (n1) of (n) adheres.
The vertical rib (8) is constituted by a vertical rib-shaped vertical rib strip (8a) formed on the inner peripheral surface of a bottomed cylindrical preform (p) for forming an ampoule container. Ampule container made of synthetic resin. The synthetic resin ampoule container according to claim 1 or 2, wherein a plurality, preferably 3 to 4, of the longitudinal ribs (8) are provided at intervals. The ampule container made of synthetic resin according to any one of claims 1 to 3, wherein the lower end of the vertical rib (8) is positioned at the lower end of the main body (1).

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