JPH0532415Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a cup-shaped molded container for packaging desserts and other foods, and the filling of the contents into the container is performed automatically using a filling machine. Concerning suitable containers.

(Prior Art) Containers formed into cup shapes by vacuum forming, injection molding, etc. are used as packaging containers for packaging desserts and other foods.

When filling these molded containers with desserts and other foods, it has become common to use an automated filling machine.

In order for an automated filling machine to be able to fill desserts and other foods, the containers must have a stacking height, that is, a certain distance between the containers when they are stacked.

This is to make it easier to insert the claws of the machine into the gaps between the flanges of the stacked containers and remove one end of each container one by one when the containers stored in a stack are separated one by one by a machine for filling. It is.

In addition, if the container flange shape is irregular, such as one with a tab, it is necessary to adjust the position of the container flange to ensure suitability for the filling machine.

In order to achieve the above object, conventional molded containers can be appropriately stacked in the following manner.

That is, FIG. 3 shows a container 17 with feet, the foot 10 of which is placed on the bottom 18 of another container, with which stacking takes place.

If the container is not a container with feet, a plurality of protrusions 11 are provided on the outer upper part of the side wall of the container 17 as shown in FIG. 4, or a protrusion 12 is provided on the inner bottom 18 of the container as shown in FIG. Stacking is achieved by engaging the flanges of the container by means of projections 11, 12, or by engaging the bottom surface of the container.

In addition, as a method for preventing the rotational shift of the container in the circumferential direction, a method is provided in which a part or parts of the side wall of the container 17 is provided with a part in which the shape of the container is deformed, as shown by 14 in FIG. 6 and 14 in FIG. 7. is used.

Methods similar to the method shown in FIG. 4 are shown in Japanese Utility Model Application Nos. 56-49739 and 1987-115729.

(Problem to be solved by the invention) When implementing a stack in which a protrusion is provided on the outer upper part of the side wall of the container as shown in FIG.
As shown in the figure, it is necessary to make the protrusion 15 large, and the side wall of the container is provided with uneven parts, which is not desirable in terms of appearance.

Even when the container 17 is stacked by providing a protrusion on the bottom of the container 17 as shown in FIG.
If the side wall angle is large, the angle between the bottom surface and the side wall becomes large, and it is necessary to make the protrusion 16 larger as shown in FIG.

In the case shown in FIG. 9, when manufacturing a long-life product, the inner surface of the container cannot be completely sterilized, and if the contents are eaten with a spoon or the like, the protrusion 16 may get stuck, which is undesirable.

All of the above-mentioned stackable containers have drawbacks, and in the case of a container whose plane cross-sectional shape is a polygon with four or more sides and whose body has a large inclination with respect to the axial direction of the container, the inclination of the body Since this is large, rotational deviation in the circumferential direction of the container occurs.

Specifically, the above problem is likely to occur when the inclination angle of the side wall of the container is 15° or more with respect to the axial direction of the container.

Furthermore, if the container flange is irregularly shaped, such as with a tab, and rotational deviation occurs in the circumferential direction of the container, this is not preferable in terms of container feeding suitability and sealing suitability of the lid material in a filling machine.

One possible solution to these problems is to reduce the angle of inclination of the side wall of the container to approximately 15° or less with respect to the axial direction of the container, but in recent years consumer needs have diversified, and container design has also changed. In some cases, it may be necessary to increase the angle of inclination of the side surface of the combined container.

The device disclosed in Japanese Utility Model Application Publication No. 63-117730 meets this need, and is capable of stacking containers with a desired stacking height in containers where the side wall of the container has a large inclination angle with respect to the axis. In order to prevent the containers from shifting, as shown in FIG. 10, between the conical surface part 19 with a large slope and the stacking step part 20 at the opening, there is a different slope part with a small slope to prevent swinging and blocking of the container. The protrusion 21 is formed to prevent displacement in the circumferential direction.

However, since the planar cross-sectional shape of the containers is circular, it is not easy to align the containers when stacking them, and a certain amount of space is required for the protruding portion consisting of a different slope. Since it protrudes between the container and the stepped portion and makes the side wall of the container uneven, it is not possible to obtain a container appearance that is desirable in terms of design.

In addition, the reverse taper of the stack part can be formed by vacuum forming, but in injection molding, the mold needs to be split, and the mold is designed to improve product pull-out, so the reverse taper part of the stack part tends to be thick. Therefore, there are disadvantages that the amount of resin used increases and the cost of the mold becomes high.

This project was devised in view of the above-mentioned problems, and it is possible to stack containers with a desired stacking height in cases where the inclination angle of the container side wall is approximately 15° or more with respect to the axial direction of the container. There is no problem with the appearance of the container due to stacking, and the positioning is easy to prevent rotational deviation in the circumferential direction.
Moreover, it is an object of the present invention to provide an inexpensive molded container that can be molded by either injection molding or vacuum molding.

(Means for Solving the Problems) In order to achieve the above objects, the present invention provides the following molded container.

In other words, it is a container with a polygonal planar shape and an open top end, and the container has a body part with a large inclination angle where the diameter increases upwardly with respect to the container axis, and a body part with a large inclination angle where the diameter increases upwardly with respect to the container axis. a small lip protrusion, a horizontal step is provided at the junction of the body and the lip protrusion to serve as a stack stopper, and a stack protrusion that engages with the stack stop is provided on the inside corner of the container; In addition, the molded container is provided with projections for preventing rotational shift that engage with the container corners, alternating with the stack projections and below the outer side of the horizontal step at the corner of the rim projection.

(Function) According to the present invention, when the molded containers are stacked one on top of the other in accordance with the flange shapes of the containers, the stack stopper horizontal portion of the upper lip protrusion engages with the stack protrusion inside the lower container. , the stacking height at this time is the same as the axially upper depth of the mouth edge protrusion.

Further, the protrusion for preventing rotational displacement in the circumferential direction of the upper container engages with a corner of the inner surface of the lower container to prevent rotational displacement of the container in the circumferential direction. Furthermore, when the containers are stacked, the play between the containers is reduced, and horizontal displacement can be prevented.

(Example) The embodiments shown in the drawings will be described below.

In FIGS. 1 and 2, numeral 1 is a molded container having an open top end and an octagonal planar cross-section, which is manufactured by injection molding.

This molded container 1 consists of a body part 2 with a large inclination angle whose diameter increases upward in the direction of the axis 8 and a lip protrusion part 5 with a small inclination angle. Horizontal step part 1 for stacking at the connection part
1 is formed.

Further, a flange portion 3 that is connected horizontally is integrally formed at the upper end of the lip protrusion portion 5. A tab 3' is formed on this flange portion 3 in correspondence with the corner portion of the container.

Furthermore, a stack projection 6 which engages with the horizontal step 11 of the lip projection 5 is formed on the inside of the corner of the container.

A rotational deviation prevention protrusion 7 is formed on the outer lower side of the corner of the horizontal step 11, and this rotational deviation prevention protrusion 7
and the aforementioned stack protrusions 6 are formed alternately at the corners.

Thus, the side wall of the body 2 is inclined at an angle of about 19° with respect to the axis 8 when cut by a plane passing through the axis 8. Moreover, since the planar cross-sectional shape is octagonal, the body 2 forms an octagonal pyramid surface 4, and the lower end of the pyramid surface 4 is connected to the bottom 9 of the octagon to close the lower end.

The lip protrusion 5 has a small inclination angle of 5 to 10 degrees, with its diameter increasing upward in the direction of the axis 8, but in reality it is inclined at 2 degrees with respect to the axis 8.

Further, the depth of the lip protrusion 5 above the shaft 8 is the same as the stacking height.

Since the present invention is formed as described above, when the containers are stacked one above the other with the tabs 3' aligned, the protrusion 11 formed by the horizontal step of the upper container will touch the stack protrusion 6 of the lower container. A good stack can be obtained with good contact. At this time, the stacking height is the same as the depth of the lip protrusion 5 in the upper direction of the axis 8.

Even if the container side wall has a large angle of inclination to the axis of 15° or more, when stacked,
The protrusion for preventing rotational deviation in the circumferential direction of the upper container engages with the inner surface of the corner of the lower lip protrusion 5, and can prevent rotational deviation in the circumferential direction of the container, and also prevents rotational deviation in the circumferential direction of the container. The play between the containers is small, and the clearance between the containers is formed at an appropriate stack gap, so that swing, which is a horizontal displacement, is prevented in just the right amount, and blocking is also prevented.

In the above embodiment, an example of a container molded by injection molding was shown, but a container molded by vacuum forming may also be used, and the stack protrusion 6 and the protrusion 7 for preventing rotational displacement in the circumferential direction of the container may be changed depending on the container design. It can be made into any shape to suit. Further, the protrusions 6 and 7 can be easily formed by injection molding.

In addition, as long as the containers are stacked according to the corners, the stacking action and the action of preventing rotational misalignment can be achieved by stacking the containers and forming the stacking protrusion and the rotational misalignment prevention protrusion corresponding to the corners. It is easy to obtain.

(Effect of the invention) According to the present invention, even if the container has a polygonal shape with a planar cross-sectional shape of four or more squares, and the container side wall has a tilt angle of 15° or more with respect to the axis, the mouth edge protrudes. The horizontal step part of the container, the stack protrusion that engages with the horizontal step part, and the rotational deviation prevention protrusion that engages with the corner of the container allow stacking at a desired stack height and prevent rotational deviation in the circumferential direction. Also, there is little play between the containers, so there is no horizontal deviation, which allows automated filling machines to fill desserts and other food products.

Therefore, when providing the container with the stack projection that engages with the horizontal stepped portion of the lip protrusion and the rotational shift prevention projection that engages with the corner of the container, they can be formed into any shape according to the container design. Therefore, appropriate stacking can be obtained without impairing the appearance and design of the container.

Since the planar cross-sectional shape of the container is polygonal, and the stacking protrusion and rotational misalignment prevention protrusion are formed in accordance with the corners, stacking between the containers can be easily achieved by simply aligning the corners. In addition, rotational misalignment is also prevented, and positioning is easier if tabs are formed on the flange to match the corners.The stack protrusion and the protrusion for preventing rotational misalignment are not formed by adding irregularities to the side wall of the container. Since it is not necessary to increase the size that it occupies, the appearance will not be spoiled.

Furthermore, since only the protrusions are formed on the container, it can be molded by either vacuum molding or injection molding, and can be manufactured at low cost.

[Brief explanation of the drawing]

Figure 1 is a plan view of the proposed container, and Figure 2 A, B, and C are diagrams 1A-A showing the stacked state of the proposed containers.
A front view of a half section of a conventional container, a partial sectional view of FIG. 1 B-B, CC, and FIGS. 6 and 7 are plan views of a conventional container provided with a rotational displacement protrusion, and FIG. 10 is a sectional view of another different conventional container. 1... Container, 2... Body, 3... Flange,
4... Conical surface, 5... Mouth edge protrusion, 6... Stack projection, 7... Rotation shift prevention projection, 8... Shaft, 9
...Bottom surface.

Claims (1)

[Scope of utility model registration request] A container with a polygonal planar shape and an open top, which has a body with a large inclination angle where the diameter increases upwards with respect to the container axis, and a body with a large inclination angle where the diameter increases upwards with respect to the container axis but with a small inclination angle. A horizontal step is provided at the junction of the body and the lip protrusion to act as a stack stopper, and a stack protrusion that engages with the stack stop is provided on the inside corner of the container. A molded container characterized in that projections for preventing rotational shift that engage with the corners are provided alternately with the stack projections and below the outside of the horizontal step at the corner of the rim projection.