JP5059372B2 - Packaging container - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a packaging container for containing food such as boiled kelp boiled in a sealed state, and more particularly to a packaging container having a relatively shallow box shape formed by molding and molding a synthetic resin sheet. .

Conventionally, there are various types of packaging containers that contain food such as chopped kelp boiled in a hermetically sealed state, but those that exhibit a relatively shallow box shape with a lid formed by stamping and molding a synthetic resin sheet. These packaging containers have a rectangular protruding flange formed on the peripheral edge of the side surface of the container body, and a rectangular receiving flange fitted to the protruding flange on the peripheral edge of the lid. It has a structure.

  However, in the case of a packaging container having a structure in which the receiving flange of the lid is simply fitted and sealed to the protruding flange of the container body, the strength of the container body and the lid is generally sufficient depending on the use state. If the lid is opened carelessly, the peripheral edges of the container main body and the lid, in particular, the four corners of the projection flange of the container main body and the inner periphery of the receiving flange of the lid, or each flange portion, can be easily deformed and repeatedly opened and closed. In some cases, the resealability is not lost even if it is performed.

In particular, in this type of container, a thermoplastic or thermosetting adhesive layer is interposed between the protruding flange of the container body and the receiving flange of the lid for the purpose of ensuring the quality retention period of the contents such as boiled rice. which openable sealed by thermal welding Te is most Accordingly, lid Kuku to open, also easily deformed when opened, a problem of a lack of resealing properties is more pronounced.

  In addition, the bottom surface of the container body is generally partially uneven, but if the surface is simply uneven, the contents may move to one side during transportation or movement, or the storage may be offset. Further, when taking out the contents, there is a problem that it is difficult to take out because it sticks to the bottom of the container.

  The present invention has been made in order to solve the above-described problems, and has improved resealability and openability by strengthening the strength of the container body and the lid, and the contents generated during transportation and the like. It is an object of the present invention to provide a packaging container that can be reliably prevented from moving and shifting, and that the contents can be taken out more easily.

  The packaging container according to the present invention, which has been made to solve the above-mentioned problems, has a rectangular annular projection flange formed on the peripheral edge of the side surface of the container body having a bottom, and a dropping step is formed on the inner periphery of the projection flange. And a container body and a lid having a receiving flange formed on the periphery of the lid portion of the lid, the fitting flange being formed on the inner periphery of the receiving flange, and a recessed protrusion formed on the inner periphery of the receiving flange. In the packaging container comprising the body, the outer periphery of the central portion of the container body is formed by forming the inclined slope portions outwardly engaged with the four corners of the drop step portion of the container body and the four corners of the drop protrusion portion of the lid body. When the canine protrusions that mesh with each other are arranged on the outer periphery of the lid central part of the lid, the canine protrusions play the role of canine teeth, and the contained contents are sandwiched by meshing with each of the upper and lower four canines and wrapped. Container Movement or shift housing of the contents by feeding or moving is prevented. It is characterized by.

Further, a single or plural cone-shaped projections are formed on the outer periphery of the central portion at the bottom of the container body, and these cone-shaped projections act as anti-slip, and in particular, the cone-shaped projections serve as a stopper, and the packaging container This prevents the contents from being moved or offset from being transported or moved.

Moreover, the drop slope part formed in the four corners of the drop step part and the drop protrusion serves as a support plate or a reinforcing plate, and the strength of the periphery of the container body and the periphery of the lid part of the cover body, particularly the container body Strength at the four corners of the peripheral edge of the lid is strengthened to prevent deformation at the time of opening, and resealability and openability are maintained.

  According to the present invention having the above-mentioned means, the strength of the container body and the lid is strengthened, the resealability and the unsealing property are good, and the movement and displacement of the contents that occur during transportation are prevented, and the contents It becomes easy to take out things.

It is a disassembled perspective view of the packaging container of the state which opened the cover which concerns on one embodiment of this invention. It is an expanded sectional view in alignment with the AA line at the time of closing a cover body in embodiment shown in FIG. It is an expanded sectional view which follows the BB line at the time of closing a cover body in embodiment shown in FIG. It is a disassembled perspective view of the packaging container which concerns on other embodiment of this invention.

  Hereinafter, embodiments of the present invention shown in the drawings will be described. 1 is an exploded perspective view of a packaging container in a state in which a lid according to an embodiment of the present invention is opened, and FIG. 2 is an AA enlarged sectional view in a state in which the lid is closed (not shown). FIG. 3 is an enlarged cross-sectional view taken along the line BB.

  The packaging container according to this embodiment includes a container body 1 having a bottom 3 and a lid 2 that seals the container body 1. The container body 1 and the lid body 2 are made of a synthetic resin sheet such as vinyl chloride, polyethylene, or polyethylene terephthalate. The container body 1 is a rectangular container in which the bottom 3 is the narrowest and gradually expands toward the upper part of the opening. The lid 2 is a rectangular lid having a flat wide plate-like lid portion 4.

Bottom 3 of the container body 1 has a flat portion 5 of the rectangular central portion, the outer periphery of the flat portion 5 a pyramid (quadrangular pyramid) shape conical or pyramidal projections 6 are arranged in a plurality patterns shape, the scan stopper It plays a role to prevent the movement of contents.

That is, the contents stored in the container main body 1 are prevented from shifting during transportation or the like, and remain in the center of the container main body 1. Further, when the contents are taken out using chopsticks or the like, the conical protrusion 6 creates a gap between the contents and the bottom surface, so that it can be easily taken out without sticking to the bottom surface of the container. The contents left uneaten can be collected and resealed in the center of the container body 1 and stored airtight.

On the side surface portion 8 of the container body 1, vertical ribs 9 are arranged in a vertical lattice shape to reinforce the side surface. A protruding flange 10 protruding in a rectangular ring shape is formed on the peripheral edge 11 of the side surface portion 8, and a falling stepped portion 12 is formed on the inner periphery of the protruding flange 10.
In the lid body 2, a receiving flange 14 that fits into the protruding flange 10 is formed on the peripheral edge 13 of the lid portion 4. On the inner periphery of the receiving flange 14, a lowered projection 15 is formed that fits into the depression step 12. By fitting the projection flange 10 and the receiving flange 14, the container body 1 and the lid 2 are hermetically sealed, and by fitting the drop step 12 and the drop projection 15, higher air tightness is obtained.

  The drop step portion 12 of the container main body 1 has two steps, and drop slope portions 16 that are inclined outward are formed at the four corners of the lower drop. On the other hand, the drop protrusions 15 of the lid body 2 are similarly formed in two steps, and drop inclination portions 17 that are inclined outward are formed at the four corners of the lower drop. The drop slopes 16 and 17 formed on the drop step 12 and the drop projection 15 are engaged with each other when the container body 1 is sealed with the lid 2, and the drop step 12 and the drop projection The strength of 15, especially the strength of the four corners thereof, is enhanced, and the fitting strength is increased to improve the airtightness of the four corners of the packaging container.

On the projecting flange 10 of the container body 1, a continuous reinforcing rib 18 is formed along the axis of the projecting flange 10 that is recessed at positions outside the respective sides. On the other hand, on the receiving flange 14 of the lid body 2, a continuous strip of reinforcing ribs 19 is formed along the axis of the receiving flange 14 so as to correspond to the reinforcing ribs 18 and project at positions outside each side. The reinforcing ribs 19 may be formed by a single continuous rib, but are constituted by a plurality of intermittent ribs as shown in the figure. Incidentally, if the reinforcing rib 19 is composed of a plurality of ribs, the strength can be enhanced.

  In particular, in the present embodiment, reinforcing step portions 20 are formed below the four corners of the drop step portion 12 in the container body 1, and the strength of the container body 1 is further increased.

  When this packaging container is used, after the contents such as food are stored in the container body 1 and filled with an inert gas (nitrogen gas), the protruding flange 10 of the container body 1 or the receiving flange 14 of the lid 2 is previously stored. The container body 1 and the lid body 2 are sealed by thermocompression bonding or the like using an adhesive sheet made of a thermoplastic adhesive or a thermosetting adhesive applied to at least one of the above. By doing so, not only can the contents be stored for a long period of time, but the strength of the container body 1 and the lid body 2 itself is enhanced, and the resealability and the unsealing property are improved.

  FIG. 4 shows another embodiment of the present invention. In the container of this embodiment, the canine protrusions 21 are arranged at the respective corners on the outer periphery of the central flat portion 5 of the container body 1, and the respective corners on the outer periphery of the center portion of the lid portion 4 of the lid body 2 corresponding thereto. The canine protrusion 22 is arranged in the structure. In this case, when the container body 1 is sealed with the lid 2, the contents are bitten by the four upper and lower canine protrusions 21 and 22, thereby preventing the contents from moving or shifting during transportation. Yes.

Again, since the outer periphery of the flat portion 5 of the container body 1 pyramid (quadrangular pyramid) shape conical or pyramidal projections 6 are arranged in a plurality patterns shape, the projections 6 plays the role of a stopper, the contents The movement of objects is reliably prevented. Other configurations are the same as those in the above-described embodiment, and a description thereof will be omitted.

  The present invention is not limited to the above embodiment. For example, it goes without saying that the drop slope portion formed on the drop step portion and the drop protrusion may be formed on the upper step side of the drop step portion and the drop protrusion. Moreover, in the said embodiment, although the reinforcement rib formed in a protrusion flange and a receiving flange is comprised by the single rib which consists of a continuous rib or several intermittent ribs, even if comprised by multiple ribs, Well, these ribs may consist of continuous ribs or intermittent ribs.

The position where the reinforcing rib is formed can be selected from the inside, outside, center, etc. of each side of the protruding flange and the receiving flange. Note that the reinforcing ribs formed on both flanges need to be fitted to each other from the viewpoint of ensuring airtightness.
Moreover, the cone-shaped protrusion formed on the bottom of the container body is not limited to a pyramid (quadrangular pyramid), but may be conical, triangular pyramidal, or other polygonal pyramidal shapes.

DESCRIPTION OF SYMBOLS 1 Container main body, 2 Lid body, 3 Bottom part, 4 Lid part, 6 Cone-shaped protrusion , 8 Side surface part, 10 Protrusion flange, 11 Periphery, 12 Recessed step part, 13 Periphery, 14 Receiving flange, 15 Recessed protrusion, 16
, 17 Inclined slope part, 18, 19 Reinforcing rib, 20 Reinforcing step part, 21, 22 Canine protrusion

Claims (2)

A rectangular annular projecting flange is formed on the periphery of the side surface of the container main body having a bottom, a drop step is formed on the inner periphery of the projecting flange, and the projecting flange is fitted on the periphery of the lid of the lid. In a packaging container composed of a container body and a lid body, each of which has a receiving flange formed, and a drop projection that fits into the drop step part on the inner periphery of the receiving flange, and the four corners of the drop step part in the container body An inclining drop part that is inclined outwardly is formed at each of the four corners of the drop protrusion in the lid, and the bottom part of the container body has a flat surface in the central part, and a cone is formed on the outer periphery of the flat surface. A packaging container, wherein the shape protrusions are arranged in a pattern. The packaging container according to claim 1, wherein canine protrusions for meshing the container contents are arranged on the outer periphery of the center part of the bottom part of the container body and the lid part of the lid.

Images