JP2013180764A - Synthetic resin-made ampule container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ampule container made of a synthetic resin which is configured so that a capped cylindrical head portion is integrally provided at the upper end of a body portion for housing liquid content, and the body portion side of the head portion is broken to open the body portion, and in which the liquid content is not made to remain in the head portion to prevent the liquid content from scattering or spilling when the ampule container is opened.SOLUTION: A projection portion 7 for hindering the surface tension of the residual liquid content from being exerted uniformly on a part of an inner peripheral surface part 6, to which the peripheral edge of the lower-end liquid surface of the residual liquid content positioned in the head portion 5 is stuck, is formed along the inner peripheral surface part 6, so that the residual liquid content are made to fall naturally in the body portion H.

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. 7, the conventional ampoule container generally has a residual content liquid n in the head portion 5 corresponding to the neck portion separately from the content liquid N stored in the main body H. Due to the action of the adhesive force and the surface tension, it is often located without flowing down to the main body H against its own weight. This state is exhibited in a state in which the surface tension of the residual content liquid n is applied uniformly to the peripheral edge of the lower end liquid surface n1 of the residual content liquid n attached to the inner peripheral surface.

  In this way, if the portion corresponding to the weakened portion 11 is broken while the residual content liquid n is located in the head 5, the residual content liquid n is scattered or flows out of the container due to this impact.

  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 intended to prevent the content liquid from being scattered or discharged at the time of opening.

The main structure of the means of the present invention for solving the above problems is as follows.
Biaxially stretched blow-molded into a bottomed cylindrical shape, containing a liquid content, a headed cylindrical head standing upright at the upper end of the main body, and a boundary between the main body and the head Formed and provided with a weakened portion that is broken by the relative fluctuation of the main body and the head,
Prevents the surface tension of the residual content liquid from acting evenly along the inner peripheral surface part of the inner peripheral surface part where the peripheral edge of the lower liquid surface of the residual content liquid located in the head adheres. Forming a protruding part,
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 posture, the content liquid that has entered the head adheres to the inner peripheral surface due to its adhesion force, and tends to remain as a residual content liquid in the head against gravity.

  With respect to the adhesive force of the residual content liquid that has penetrated into the head, a part of the inner peripheral surface portion where the lower end liquid surface of the residual content liquid is located has a surface of the residual content liquid along the inner peripheral surface portion. Since the protrusions that prevent the tension from acting evenly are formed, the residual content liquid cannot be exerted the force that stays in the head, so that it naturally flows down from the head to the main body. , No residual liquid is generated in the head.

  According to another configuration of the present invention, the projecting portion of the main configuration described above is configured by vertical ribs formed on the inner peripheral surface of a bottomed cylindrical preform for forming an ampoule container.

  In the case where the protrusion is constituted by a vertical rib formed on the inner peripheral surface of a bottomed cylindrical preform for forming an ampoule container, the vertical rib is formed on a part of the inner peripheral surface. As a result, the uniformity of the shape of the inner peripheral surface portion along the circumferential direction is lost, and the uniformity of the action of the surface tension of the residual content liquid along the circumferential direction is lost, whereby the residual content liquid flows down naturally.

  In another configuration of the present invention, the protrusion having the main configuration described above is configured by a convex portion that is molded by relative pressing from a blow mold when blow molding into an ampoule container.

  In the case where the protrusion is constituted by a protrusion formed by relative pressing from a blow mold during blow molding into an ampoule container, the protrusion should be formed on a part of the inner peripheral surface. Thus, the uniformity of the shape of the inner peripheral surface portion along the circumferential direction is lost, so that the uniformity of the action of the surface tension of the residual content liquid along the circumferential direction is lost, and the residual content liquid flows down naturally.

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.

  In the case where the protrusions are vertical ribs and protrusions, the content liquid in the head loses the uniformity of the action of the surface tension along the inner peripheral surface portion, and the content liquid in the head Naturally flows down, so that it is possible to reliably prevent the generation of residual liquid in the head.

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. FIG. 3 is a plan view taken along the line AA in FIG. It is a whole longitudinal cross-sectional view which shows other example embodiments of this invention. FIG. 4 is an enlarged view of a main part of the embodiment shown in FIG. FIG. 6 is a plan view taken along the line B-B in FIG. It is a whole longitudinal cross-sectional view for demonstrating the outline | summary of a prior art.

Embodiments of the present invention will be described below with reference to FIGS.
In the present embodiment, the side on which the head 5 is located with respect to the main body H 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 H that contains the content liquid N, and a headed cylindrical head 5 that is erected on the upper end of the main body H. And a weakened portion 11 formed at the boundary between the main body H and the head 5 and broken by relative fluctuations such as bending of the main body H and the head 5, and the residual content liquid n is contained in the head 5. When positioned, the surface tension of the residual content liquid n is evenly distributed along the inner peripheral surface portion 6 on a part of the inner peripheral surface portion 6 to which the peripheral edge of the lower end liquid surface n1 of the residual content liquid n adheres. A protrusion 7 is formed to prevent the action.

  The main body H (see FIGS. 1 and 4) includes a bottomed cylindrical body 1, and a shoulder 2 standing upright at the upper end of the body 1 while being reduced in a stepped shape upward. The upper end of the shoulder portion 2 is configured by connecting a lip portion 4 having a outer rim structure with a neck portion 3 having a small outer diameter, and the head portion 5 is cut into the lip portion 4 from the outside. Is continuously provided through the weakened portion 11 formed thin. The lower part of the main body part H than the mouthpiece part 4 is a part subjected to biaxial stretch blow molding, whereas the mouthpiece part 4 is a part that is not subjected to biaxial stretch blow molding and is thick. . Since the mustache part 4 is thick, the weakened part 11 formed by cutting or the like between the thick head 5 described later is almost deformed by the mustache part 4 and the head 5. Therefore, it will be supported stably and it will be fractured stably and satisfactorily.

  The head portion 5 (see FIGS. 1 and 4) is a portion that is not biaxially stretch blow-molded like the mouthpiece portion 4 and is formed relatively thick from the beginning. The inner peripheral surface from the top to the bottom is suddenly expanded downward at the portion from the neck 3 to the upper end of the shoulder 2. Therefore, when the residual content liquid n is located in the inner peripheral surface area from the head 5 to the main body H, the lower end liquid level n1 of the residual content liquid n (see FIG. 7). An inner peripheral surface portion 6 in which is located is formed.

  A protrusion 7 that prevents the surface tension of the residual content liquid n from acting evenly along the inner peripheral surface portion 6 is formed on a part of the inner peripheral surface portion 6. In the first embodiment shown in FIG. 3, the projection 7 is a vertical shape formed on the inner peripheral surface of a bottomed cylindrical preform for molding an ampoule container (see the two-dot chain line in FIG. 1). It is composed of ribs 8. Therefore, the vertical ribs 8 formed on the preform are positioned as they are in the portion from the head 5 to the mouthpiece 4 and the vicinity of the neck 3, but the inner periphery of the neck 3 that starts to undergo stretching deformation. The protrusion height of the vertical rib 8 gradually decreases on the surface, that is, on the portion below the inner peripheral surface portion 6.

  As shown in FIG. 3, the protrusion 7 constituted by the vertical rib 8 is constituted by three vertical ribs 8, and the residual content liquid n exhibited by the protrusion 7 formed thereby. It ensures that the surface tension is prevented from acting evenly.

  In the second embodiment of the protrusion 7 shown in FIGS. 4 to 6, the protrusion 7 is provided with a protrusion in advance on a part of the molding die surface portion of the blow split mold facing the neck 3. When a preform (not shown) is blow-molded into an ampoule container, a part of the neck 3 to be blow-deformed is relatively pushed to form a convex part 9 on a part of the inner peripheral surface part 6, The projecting portion 7 is constituted by the projecting portion 9. Thus, since the convex part 9 is shape | molded by the relative pressing of the protrusion previously shape | molded by the blow mold, the recessed part 10 (FIG. 5) is formed in the outer peripheral surface part of the neck part 3 in which the convex part 9 was formed. Reference) will be added.

  In the case of the second embodiment, the convex portion 9 constituting the protrusion 7 can be formed by limiting to the inner peripheral surface portion 6.

  As mentioned above, although the structure of this invention and its effect were demonstrated along embodiment example, embodiment of this invention is not limited to the said embodiment example, For example, the protrusion 7 is made into the vertical rib 8 It is also possible to configure it as a surface having a large water repellency with respect to the residual content liquid n as compared with other portions of the inner peripheral surface portion 6, rather than the shape such as the convex portion 9.

  Since the ampule 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 can be applied in a wide field as an ampule container.

H; body 1; body 2; shoulder 3; neck 4; mustache 5; head 6; inner peripheral surface 7; projection 8; ; Content liquid n; Residual content liquid n1; Bottom liquid level

Claims (3)

A main body (H) that is biaxially stretched blow-molded into a bottomed cylindrical shape and contains the content liquid (N), and a headed cylindrical head (5) that stands upright at the upper end of the main body (H). ), And a weakened portion (11) that is formed at a boundary portion between the main body portion (H) and the head portion (5) and is broken by a relative variation between the main body portion (H) and the head portion (5), The inner peripheral surface portion (6) is part of the inner peripheral surface portion (6) to which the peripheral edge of the lower end liquid surface (n1) of the residual content liquid (n) located in the head (5) adheres. A synthetic resin ampule container is characterized in that a protrusion (7) is formed along the surface to inhibit the surface tension of the residual content liquid (n) from acting evenly. The ampule container made of synthetic resin according to claim 1, wherein the protrusion (7) is constituted by a vertical rib (8) formed on the inner peripheral surface of a bottomed cylindrical preform for forming an ampule container. The ampule container made of synthetic resin according to claim 1, wherein the protrusion (7) is formed by a convex part formed by relative pressing from a blow mold when blow molding into the ampoule container.

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