JP2013154940A - Transfusion bottle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transfusion bottle from which a content is easily discharged through a hole for by sticking a needle into the bottom of a container.SOLUTION: A transfusion bottle has an inclined surface 6 inclined relative to a horizontal surface at a bottom 2, and is provided with a stage 3 not having an erected sidewall at least in a die stripping direction of the inclined surface 6.

Description

  The present invention relates to an infusion bottle that discharges an infusion by its own weight by hanging the bottom portion upward.

  Conventionally, an infusion bottle made of resin that has been blow-molded has been developed. Blow molding is a molding method in which a parison made of a thermoplastic resin is sandwiched between divided molds, air is injected into the divided molds to inflate them, adhere to the inner surface of the molds, and then solidify by cooling.

  The infusion bottle is usually configured to have an infusion bottle body, a container bottom, a hook formed on the container bottom, and an opening. As a usage form of the above-mentioned infusion bottle, the infusion is dripped by its own weight by hanging the hook with the container bottom facing up and the opening facing down, and is supplied to the patient.

  As an infusion bottle, for example, in Patent Document 1, a hook storage recess is provided so as to cross the center of the container bottom of the infusion bottle body, and the container bottom, hook storage recess, latching protrusion, etc., together with the infusion bottle body, Using a split mold that can be divided into left and right with the hook as a boundary, it is integrally formed by blow molding, and after hooking the hook is folded and latched on the latch projection, the hook is accommodated in the hook storage recess The technology which can be set is disclosed.

JP 2002-284133 A

  However, in a blow-molded container as disclosed in Patent Document 1, since the infusion is sent through a thin tube, when the body is large and the body is sufficiently large, the body is recessed as the infusion drops. However, in the case of a bottle with high rigidity, such as when the barrel is shortened or the thickness of the layer is increased, the container will not dent as the contents are discharged. As the liquid became vacuum, the drainage was gradually inferior, and the liquid did not fall down in the middle of the waste liquid.

  This invention is made | formed in view of the said situation, The place made into the objective is providing the infusion bottle which can discharge | emit the contents satisfactorily also in a highly rigid infusion bottle.

  In order to achieve this object, the present invention has the following features.

  The infusion bottle according to the present invention has an inclined surface that is inclined with respect to a horizontal plane at the bottom, and includes a step portion that does not have an upstanding side wall in at least the mold removal direction of the inclined surface.

  According to the present invention, even in a highly rigid container, a needle can be easily pierced to make a hole, and good drainage can be maintained.

  In addition, since the step portion is configured to be recessed inward having at least a horizontal surface on the inclined surface, the mold does not get caught and the mold can be easily removed, so that the moldability is kept good even in blow molding. Can do.

It is a front view of the container concerning this embodiment. It is a perspective view from the bottom part of the container which concerns on this embodiment. It is a principal part enlarged view of the step part of the inclined surface which concerns on this embodiment. It is sectional drawing of the container and metal mold | die which concern on this embodiment.

  First, the container of this embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 is a front view of a container according to the present embodiment. FIG. 2 is a perspective view from the bottom of the container according to the present embodiment. FIG. 3 is an enlarged view of a main part of the AA cross section of FIG.

  The infusion bottle main body 1 according to the present embodiment includes a container bottom 2, a step 3, a hook 4, and an opening 5. The infusion bottle in the present embodiment is made of a synthetic resin and is integrally formed using a blow molding method. In addition, it is possible to mold using not only blow molding but also injection molding, etc., but in that case, by configuring the recessed vertex of the stepped portion 3 to be thinner than others, When making a hole using an injection needle etc., it can pierce easily and is preferable.

  The opening 5 in the infusion bottle main body 1 is formed at a position facing the hook 4 provided at the bottom, and is used by being suspended with the hook 4 facing upward as shown in FIG. Discharged.

  As a material constituting the infusion bottle main body 1, a thermoplastic resin suitable for blow molding can be suitably used, and examples thereof include olefin resins such as polyethylene and polypropylene. In addition, the infusion bottle in this embodiment is not limited to this, It is possible to use various thermoplastic resins by the aspect.

  The container bottom 2 has a hook 4 for hanging and using it in the center, and has flat portions 7 made of horizontal surfaces at both ends. Both end portions of the container bottom 2 protrude slightly to form a horizontal flat surface portion 7, and are configured to stand up stably by the flat surface portion 7 when the container is raised with the container bottom portion 2 facing down. is there.

  In addition, a pinch-off is provided at the center of the plane portion 7 in a longitudinal manner, and a groove 10 is formed along the pinch-off so that there is no rattling when standing up, and the pinch-off is formed at a recessed position. Yes. In addition, the hook 4 is formed by compression with pinch-off, and as shown in FIG. 3, the end portion that is a connecting portion with the main body can be folded so that the container does not fall down. It is formed by compression so that it is thinner than the part.

  Further, on both sides that are adjacent to the hook 4, inclined surfaces 6 are respectively provided between the flat portions 7 at both ends. The inclined surface 6 has a shape inclined with respect to the horizontal plane from the container side surface to the hook 4 side.

  Next, the step part 3 provided in the inclined surface 6 is demonstrated in detail using FIG. The inclined surface 6 in the present embodiment is located at the center of the container bottom 2, and the inclined surface 6 is inclined at both ends with the portion where the hook 4 is fixed as the top.

  A step portion 3 is formed at substantially the center of the both inclined surfaces 6. The surface which comprises the step part 3 has three standing side surfaces from which a substantially horizontal level surface 3a and the inclined surface 6 differ in an inclination angle in the AA cross section. Since the step portion 3 is locally formed as a convex shape inside the container, the step portion 3 is thinner than other portions in blow molding, so that it is easy to pierce the needle. When the step portion 3 is formed, the more convex the inner side, the easier it is to make it thinner than the other portions, which is suitable for piercing the needle. By opening an air hole in the step portion 3 of the container in this way, the contents come out smoothly from the opening 5 even if the side surface of the container is not recessed with the waste liquid.

  In addition, the horizontal surface 3a which forms the step part 3 should just be a shape which can be removed as shown in FIG. 4, and does not necessarily need to be horizontal.

  Further, as shown in FIG. 2, the step portion 3 is formed by being surrounded by the side surfaces upstanding on three sides, so that the injection needle can be inserted by inserting the injection needle from the open portion of the horizontal surface 3 a to the side surface where the injection needle is raised. It is possible to prevent displacement when the needle is pierced, and it is possible to easily pierce the needle at a predetermined position.

  In addition, the step part 3 does not need to be provided with an upstanding side wall at least in a mold releasing direction at the time of blow molding, which will be described later, and may have a shape having, for example, three or more side walls.

  Next, a blow molding method for a container according to this embodiment will be described. FIG. 4 is a schematic view in the blow molding of the infusion bottle in the present embodiment, and shows a cross-sectional view of the split mold 8 used for the infusion bottle and blow molding.

  In blow molding, a parison 11 made of a thermoplastic resin is sandwiched between a pair of split molds 8, air is injected from a blow pin (not shown) into the mold, and pressed against the cavity surface of the mold 8, along the cavity surface. It is cooled and solidified into a shape.

  Thereafter, as shown in FIG. 4, the mold 8 is opened and the container is taken out. The mold 8 includes a convex portion 9 at a location corresponding to the step portion 3 of the infusion bottle. The convex portion 9 has a shape that is inclined horizontally or downward so that at least the mold can be removed. In addition, the convex portion 9 is provided with an inclined shape to form the inclined surface 6.

  Thereby, the inclined surface 6 and the step part 3 of a container are formed. The convex portion 9 is locally formed on the inclined surface of the mold 8, and the parison is stretched at the time of blowing, so that the thickness can be made thinner than the other portions, and the needles can be formed in comparison with the other portions. It can be easily pierced.

  The above-described embodiments and examples are preferred embodiments and examples of the present invention, and the scope of the present invention is not limited only to the above-described embodiments and examples, and does not depart from the gist of the present invention. Implementation in a form in which various changes are made in the range is possible.

DESCRIPTION OF SYMBOLS 1 Infusion bottle main body 2 Container bottom part 3 Step part 3a Horizontal surface 4 Hook 5 Opening 6 Inclined surface 7 Plane part 8 Mold 9 Convex part

Claims (3)

It has an inclined surface inclined with respect to the horizontal plane at the bottom,
An infusion bottle, comprising: a step portion that does not have an upstanding side wall at least in the mold release direction of the inclined surface.   The infusion bottle according to claim 1, wherein the step portion includes a side surface and a horizontal surface. The bottom is provided with flat horizontal portions at both ends,
The infusion bottle according to claim 1, wherein the inclined surface is provided between the flat portions.

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