JPH0246355Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a flexible plastic container for containing intravenous infusions such as blood and plasma substitutes.

BACKGROUND ART A conventional plastic container is known as shown in Japanese Utility Model Application No. 57-45944 shown in FIGS. 4 and 5.

This conventional plastic container is provided with a flat seat part a for making it stand up on its own at one end in the vertical direction, a hanging ring b for hanging, and a sealable mouth part c at the other end.

A recess d is provided in the center of the seat a, which is recessed from the periphery, and the hanging ring b is bendably erected in the recess d, and the recess d
A holding protrusion f that fits into the hanging hole e of the bent hanging ring b is provided in a protruding manner, and when the container is made to stand on its own, the hanging ring b is bent within the recess d and fitted into the holding protrusion f. The hanging ring b is held together so that it does not get in the way of self-supporting.

Problems to be Solved by the Invention The above-mentioned hanging ring b is installed upright on the parting line of a container to be hollow-molded, but in the case of conventional plastic containers, the above-mentioned hanging ring b is held in a bent state. The holding convex part f is attached to the above-mentioned hanging ring b.
In order to engage with the hanging hole e of the hanging ring b, the hanging ring b is erected at a position far away from the parting line by the position of the hole e of the hanging ring b. In the case of a container to be blow molded, if the holding projection f is projected to a position exceeding 1/2 of the distance from the parting line of the container to the side surface in the direction perpendicular to the parting line,
This holding protrusion f becomes extremely thin, and the hanging ring b
There was a problem in that the holding convex part f was deformed and the hanging ring b could come off when it was fitted with the holding ring, making it impossible to perform its original function of holding the hanging ring.

Furthermore, pinholes may occur in the thin holding convex portion f, making it impossible to use it as a container.

Means for Solving the Problems The present invention was developed in view of the above-mentioned problems, and it is possible to increase the thickness of the protrusion for engaging and holding the hanging ring in a bent state even during blow molding.
To provide a plastic container for infusion that prevents deformation when engaged with a hanging ring, prevents the hanging ring from coming off, and allows the hanging ring to be easily and stably fitted and held. The purpose is to

The structure is such that a recess is provided in the center of the seat of the container, extending from the parting line of the container in a direction perpendicular to the parting line, and a hanging ring that fits into this recess when bent. erected so as to be bendable on the parting line, and on both sides of the recess and at a position of 1/2 or less of the distance from the parting line to the side surface in the direction perpendicular to the parting line. It has a structure in which protrusions are formed to flexibly engage with both side edges of the hanging ring.

Function: When the container is standing on its own, the hanging ring is bent and fitted into the recess, and its both side edges are engaged with the protrusions to be held. The protrusion is located near the parting line and is thickly formed by blow molding.

Embodiment An embodiment of the present invention will be described based on FIGS. 1 to 3.

In the figure, 1 is a container, and the container 1 is made of thermoplastic plastic such as linear low-density polyethylene (L-LDPE) by blow molding to have a substantially elliptical cross-sectional shape. A flat seat 2 that can stand on its own is provided at one end in the vertical direction. Although not shown, the other end is provided with an opening that can be sealed tightly.

The seat part 2 has recesses 3, 3a on both sides of the long axis of the central part along the short axis in the approximately elliptical seat surface. 3a in the longitudinal direction. A plate-shaped hanging ring 4 is provided in the recesses 3, 3a in parallel with the long axis and on the parting line L of the container 1 so as to be bendable in the short axis direction.
The recess 3a on one side in the short axis direction of the upright part of the hanging ring 4 of the recesses 3, 3a is wider than the other side, so that the bent hanging ring 4 fits into this recess 3a. It's getting old. And this hanging ring 4
Projections 5, 5 which flexibly engage with both side edges of the hanging ring 4 are protruded from both sides of the fitting recess 3a. Further, the bottom surface of the recess 3a into which the hanging ring 4 fits is gradually raised to the outside from the standing part of the hanging ring 4, so that the tip of the bent hanging ring 4 is at a height that substantially coincides with the seat surface. I'm starting to accept it more and more.

The projections 5, 5 which flexibly engage and hold the hanging ring 4 are located near the parting line of the container 1,
It is provided at a position less than 1/2 of the distance from the parting line L to the outer surface of the container 1.

In the case of a blow-molded container, when the protrusion is provided protruding from the outer surface of the container 1, the protrusion position must exceed 1/2 of the distance from the parting line L of the container 1 to the outer surface of the container 1. As the blow ratio increases, the wall thickness becomes thinner rapidly, but within 1/2 the wall thickness necessary for the protrusion can be maintained.

The base of the hanging ring 4 is integrally connected to the container 1 via a thin hinge 4a.

In the above configuration, the container 1, filled with an infusion solution, stands on a stand with the seat 2 facing downward. At this time, the hanging ring 4 is fitted into the bent recess 3a, and its both side edges are engaged with and held by the protrusions 5, 5. At this time, the tip of the hanging ring 4 is approximately the same as the surface of the seat 2, and this portion also contacts the table, so the container 1 is connected to both surfaces of the seat 2 in the long axis direction and in the short axis direction. It is supported at three points at the tip of a hanging ring 4 located on one side, and can stand on its own in a stable state.

On the other hand, when using the container 1, the recess 3a
The hanging ring 4 is raised up, hung on a hanger, and at this time, a lead-out needle is inserted into the plug at the mouth located on the lower side to start dripping.

Effects of the invention According to the invention, the protrusions 5, 5 that hold the hanging ring 4 in a bent state are located at a position of 1/2 or less of the distance from the parting line of the container 1 to the side surface in the direction perpendicular to the parting line L. Therefore, the wall thickness of the protrusions 5, 5 can be made thicker even during blow molding, and therefore, the holding strength of the protrusions 5, 5 can be strengthened, so that the hanging ring 4 can be prevented from coming off from the protrusions 5, 5. It disappears. Further, since both side edges of the hanging ring 4 are engaged and held by the protrusions 5, the hanging ring 4 can be easily and stably fitted and held. Furthermore, since the protrusions 5, 5 can be made thick, it is possible to prevent pinholes from forming in these parts.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the present invention, with Figure 1 being a front view of the main part of the hanging ring in a bent state, and Figure 2 being a front view of the main part of the hanging ring in its upright position. The side view and FIG. 3 are cross-sectional views taken along the - line in FIG. 1, and FIGS. 4 and 5 show conventional examples.
The figure is a front view with the main part cut away, and FIG. 5 is an enlarged sectional view of the main part. 1 is a container, 2 is a seat, 3a is a recess, 4 is a hanging ring, and 5 is a protrusion.

Claims (1)

[Scope of utility model registration request] In a plastic container for infusion, which is provided with a flat seat part 2 at one end in the vertical direction and a sealable mouth part at the other end, and which is hollow-molded from flexible plastic, the seat part of this container 1 is A recess 3a is provided in the center of the container 1 extending from the parting line L of the container 1 in a direction perpendicular to the parting line L, and a hanging ring 4 that fits into the recess 3a in a bent state is provided as described above. Stands upright on the parting line so that it can be bent freely, and the recess 3a
and at a position less than 1/2 of the distance from the parting line to the side surface in the direction perpendicular to the parting line L, protrusions 5 that flexibly engage with both side edges of the hanging ring 4 in the bent state. , 5 is formed.