JP2008100725A - Packaging container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging container in which the strength of a container body and the strength of a lid member are increased to improve a re-sealing characteristic and a seal-opening characteristic, either the movement or the shift of the contents generated during its transportation and the like is positively prevented and contents are more easily taken out. <P>SOLUTION: There is provided a packaging container comprised of a container body 1 and a lid member 2 wherein a rectangular annular protrusion flange 10 is formed at the peripheral edge 11 of the side surface 8 of the container body 1 having a bottom 3, dropped steps 12 are formed at the inner periphery of the protrusion flange 10 and peripheral edge 13 of a lid 4 of a lid member 2 has a receptacle flange 14 fitted to the protrusion flange 10, and the inner periphery of the receptacle flange 14 has dropped protrusions 15 fitted to the dropped steps 12. The container is formed of outward inclined dropped slant portions 16, 17 engaged with each other at four corners of the dropped steps 12 at the container main body 1 and four corners of the dropped protrusions 15 at the lid member 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

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 that fits the protruding flange is formed 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. In most cases, the lid is sealed so that it can be opened by thermal welding. Therefore, the problem that the lid is difficult to open, easily deforms when opened, and lacks resealability is more remarkable.

  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 in which a receiving flange is formed on the periphery of the lid portion of the lid, and the receiving flange is formed on the inner periphery of the receiving flange. The packaging container comprising a body is characterized in that drop-inclined portions inclined outward are formed at the four corners of the drop-in step portion in the container main body and the four corners of the drop-in projections in the lid body, respectively. .

  With such a configuration, the drop slopes formed at the four corners of the drop step and the drop protrusion serve as a support plate or a reinforcing plate, and the strength of the periphery of the container body and the periphery of the lid of the lid In particular, the strength of the four corners of the peripheral edge of the container body and the lid is strengthened to prevent deformation at the time of opening, and resealability and unsealing properties are maintained.

  Further, when reinforcing ribs that are fitted to each other are formed on the four sides of the projecting flange in the container body and the four sides of the receiving flange in the lid body, the reinforcing rib plays the role of the rib of the projecting flange and the receiving flange. The strength of the flange and the receiving flange is strengthened to prevent deformation at the time of opening, more reliable resealability and opening performance are obtained, and the fitting area between the container body and the lid increases due to the fitting of both reinforcing ribs Thus, the fitting strength is increased, and the airtightness and sealing strength of the packaging container are increased.

  If the reinforcing ribs that are fitted to each other are composed of a plurality of separated ribs, the strength of the reinforcing rib itself is strengthened, the strength of the protruding flange and the receiving flange is further strengthened, deformation is prevented, and more reliable re-sealing is achieved. And openability.

  Furthermore, if reinforcing step portions are formed below the four corners of the drop step portion in the container body, the strength is further increased, and a cone-shaped protrusion is formed on the outer periphery of the central portion at the bottom of the container body. When the diamond-shaped projections are formed on the outer periphery of the container, the cone-shaped projections and the diamond-shaped projections act as anti-slip, and the cone-shaped projections act as a stopper in particular, so that the contents can be moved or offset when the packaging container is transported or moved. Is prevented.

  Furthermore, when the canine protrusions that mesh with each other are arranged on the outer periphery of the central part of the container body and the central part of the lid of the lid body, the canine protrusions play the role of canine teeth, and the contained contents are arranged in four upper and lower parts. Therefore, it is possible to prevent the contents from being moved or displaced by transporting or moving the packaging container.

  In the case where a thermoplastic adhesive or a thermosetting adhesive is interposed between the four sides of the projecting flange in the container body and the four sides of the receiving flange in the lid body, For example, an inert gas or an oxygen scavenger that acts in combination is effectively acted, and the contents can be stored for a long time.

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

  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.

  The bottom part 3 of the container body 1 has a rectangular flat part 5 at the center, and a plurality of pyramid-shaped pyramidal projections 6 are arranged on the outer periphery of the flat part 5 in a pattern. A diamond-shaped projection 7 cut into a diamond shape is disposed on the outer periphery of the plate 6 and serves as a stopper to prevent the contents from moving.

  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. Also, when the contents are taken out using chopsticks or the like, a gap is formed between the contents and the bottom surface by the cone-shaped protrusions 6 and the diamond-shaped protrusions 7, so that they do not stick to the bottom surface of the container, The contents that can be easily taken out and have not yet been eaten 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 using this packaging container, after the contents such as food are stored in the container body 1 and filled with an inert gas (nitrogen gas), the projection flange 10 of the container body 1 or the receiving flange 14 of the lid body 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 strengthened, and the resealability and unsealing property are improved.

FIG. 4 shows another embodiment of the present invention. In the container according to this embodiment, the canine protrusions 21 are arranged at the corners of the outer periphery of the central flat portion 5 of the container body 1, and the corners of the outer periphery of the center portion of the lid portion 4 of the lid body 2 corresponding to this. 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.

  Also in this case, a plurality of pyramid-shaped pyramid-shaped projections 6 are arranged in a pattern on the outer periphery of the flat portion 5 of the container body 1, and a diamond shape cut into a diamond shape on the outer periphery of the cone-shaped projection 6. Since the protrusions 7 are arranged, these protrusions 6 and 7 serve as stoppers, and the movement of the contents 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 ribs to intermittently, it may comprise with a multiple rib. 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.

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.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container body, 2 cover body, 3 bottom part, 4 cover part, 6 cone-shaped protrusion, 7 diamond-shaped protrusion, 8 side part, 10 protrusion flange, 11 peripheral edge, 12 drop step part, 13 peripheral edge, 14 receiving flange, 15 drop Projection, 16, 17 Reclined slope, 18, 19 Reinforcement rib, 20 Reinforcement step, 21, 22 Canine protrusion

Claims (7)

  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 A packaging container characterized in that a drop slope part inclined outward is formed at each of the four corners of the drop protrusion in the lid.   The packaging container according to claim 1, wherein reinforcing ribs that are fitted to each other are formed on the four sides of the projecting flange in the container body and the four sides of the receiving flange in the lid.   The packaging container according to claim 2, wherein the reinforcing rib is constituted by a continuous rib or a plurality of ribs separated from each other.   The packaging container according to claim 1, 2, or 3, wherein a reinforcing step is formed below the four corners of the drop step in the container body.   The bottom portion of the container body has a flat surface at the center, and a cone-shaped protrusion is arranged on the outer periphery of the flat surface, and a diamond-shaped protrusion is arranged on the outer periphery of the cone-shaped protrusion. 3. A packaging container according to 3 or 4.   The packaging container according to claim 1, 2, 3, 4 or 5, wherein canine protrusions meshing with each other are disposed on an outer periphery of a central part of a bottom part of the container body and a lid part of the lid. A thermoplastic adhesive or a thermosetting adhesive is interposed between the four sides of the projecting flange in the container body and the four sides of the receiving flange in the lid, and is thermally bonded so as to be opened. , 5 or 6 packaging container.

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