JPS6016528Y2 - break open container - Google Patents

Description

[Detailed Description of the Invention] The present invention enables easy opening of plastic containers for pudding, chawanmushi, etc., which are heat-sealed with a plastic film as a lid.

Conventionally, when covering a plastic container body with a plastic film, the film was welded to the container body using a multilayer film sheet or hot melt material to make it easier to peel off during use. Since the adhesive was relatively strong in order to provide adhesive strength to prevent peeling during transportation and storage, it was often difficult to peel off the opening when opening the package.

The present invention provides a container that can be easily opened by not peeling off the plastic film as a lid from the container body, but by integrating the plastic film with the container flange and tearing it from the container body. That is as follows.

As shown in FIGS. 1 and 2, the inner side of the flange corresponding to the boundary between the container body wall 11 and the flange 12 is made thin so that the broken part 13 is surrounded along the edge of the container. 12 is covered with a plastic film 2o and welded.

As shown in FIG. 2, the flange portion 12 has a protruding portion extending in the radial direction at one corner of the flange portion of the container 10 to form a knob portion 14.
A bent portion 15 whose wall thickness is slightly thinner than that of the collar portion 12 is formed at the base of the knob portion 14 (see Fig. 3).
.

It is preferable that the bent portions 15 are straight and symmetrical, intersecting each other so as to slightly cut out one corner 16 of the broken portion 13.

Since the container 10 according to the present invention has the above-described structure, when the knob part 14 is pushed upward, the folded part 15 is thin, so the knob part 14 is bent upward using the folded part 15 as a fold line. Ru.

At this time, since one corner 16 of the fractured part 13 crosses the bent part 15 and connects to the knob part 14, the force pushing up the knob is concentrated on the negative corner 16 of the fractured part 13, causing the initial fracture in the fracture part 13. occurs easily.

After one corner 16 of the rupture part 13 is ruptured, if the knob is pulled up, the tensile force is concentrated on the rupture part 13, and together with the notch effect, the flange 1 is pulled up along the rupture part 13 surrounding the rim of the container.
2 can be easily torn from the container body 11.

In another embodiment, the broken part 13 is connected to the collar part 12 and the body wall 11.
Rather than providing it at the boundary between the flange 1 and the
2 is divided into an outer flange 12a and an inner flange 12b, and a broken part 13 is formed between the outer flange 12a1 and an inner flange 12.
b is divided by the broken part 13, and when the knob part 14 is pulled up, the outer collar part 12a is divided by the broken part 13 into the inner collar part 12.
It breaks from point b and can be removed from the container.

In this case, in the second embodiment, since the peripheral shape of the broken part 13 can be controlled independently of the horizontal cross-sectional shape of the trunk wall 11, as shown in FIG. One corner 16 is formed into an acute angle of 90° or less to connect deeply inward to the knob portion 14, and the curve of the broken portion 13 is rounded at at least two portions 17, 17' adjacent to the corner 16 among the other two corners. Give.

In the second embodiment, since one corner 16 of the breaking part 13 connected to the knob part 14 is at an acute angle, the force pushing up the knob part 14 is concentrated at the apex of one corner 16, and the initial breakage becomes easier. Since the two adjacent parts 17, 17' have a rounded shape, even if the fracture progresses to the two parts 17, 17', the direction of the breaking force does not suddenly change, and the tearing progresses easily. be able to.

Note that the one corner 16 that is an acute angle is not limited to the second embodiment in which the broken portion 13 is provided in the collar portion 12;
If the shape of the upper part is an acute angle like a spout, a broken part 13 can be created at the boundary between the body wall 11 and the flange part 12 as in the first embodiment.

In the above-mentioned embodiment, the container was rectangular, but as shown in FIG.
, if it is made to intersect with the broken portion 13, the bent portion 15 becomes a broken line portion, and the initial break easily occurs in the broken portion 13, as in the previous embodiment.

Note that the knob portion 14 may be provided with a non-slip surface 18 on its back or surface (see FIG. 3).

In the present invention, as described above, the inner side of the flange 12 of the container 10 or the flange is located between the container flange 12 and the container body wall 11, that is, at the boundary between the container flange 12 and the body wall 11, or near the base of the flange 12. Part 1
2, that is, in the upper or lower surface of the flange, a broken part 13 surrounding the container mouth is formed, and a bent part 15 provided at the base of the knob 14 extending outward from the flange 12; Broken part 1
Since it is a container with a structure that intersects 3 and 3, the principle of lever,
The flange 12 can be easily broken open from the container body wall 11 due to the notch effect, and since the flange 12 is broken from the body wall 11, it is easy to separate the flange 12 and the plastic film 20 serving as the lid. There is no need to consider peeling,
Since the lid body 20 only needs to be firmly welded, there are various advantages such as not being limited by the material of the film 20, making it easier to work in the welding process, and preventing the occurrence of sealing defects. be.

In the second embodiment, the outer flange 12a and the inner flange 12b
may be on the same plane, and in any of the embodiments described above, when the plastic film 20 serving as the lid is welded or glued to the container flange 12, It goes without saying that welding should be done only to the outer flange.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part showing a broken part of a container according to the present invention, FIG. 2 is a plan view of the container, and FIG. 3 is a view showing a bent part. FIG. 4 is a diagram showing the broken part in the second embodiment, FIG. 5 is a plan view of the container of the second embodiment, FIGS. 6 and 7 are perspective views showing the open state, and FIG. is a plan view of a cylindrical container. 10... Container, 11... Trunk wall, 12.
...Brim part, 13...Broken part, 14...
...Knob part, 15...Bending part, 16...
...Broken part-corner, 18...Slip prevention, 2
0...Plastic film.

Claims (2)

[Scope of utility model registration request] (1) A broken part surrounding the container mouth is provided in the flange of the container, a tab extends to the flange, a bent part is provided at the base of the tab, and the bent part and the broken part are connected to each other. A rupture-opening container characterized by having a structure in which the flange portions are crossed, a lid body is welded to the flange portion, and the rupture portion is broken to remove the lid body together with the flange portion. (2) The break-open container according to item (1), characterized in that the break part is provided in the container flange, and the break part projects at an acute angle in the direction of the tab at the break part that intersects with the bent part. .