JPH10194310A - Packaging container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent accident from happening, and easily remove a lid body by a method wherein this packaging container is formed of a container main body which is formed of a plastic sheet and is open, the lid body which is bonded to the rim of the internal peripheral wall of the container main body and closes the opening of the container, and an unsealing preventive member which is bonded to the peripheral edge under a state wherein the lid body is placed on the container main body. SOLUTION: A housing part 6 which is open is defined by erecting a peripheral wall 5 while being extended, from the periphery of the bottom part of a container main body 1, and on the peripheral wall 5, a fitting part 7 in which the peripheral edge of a lid body 2 can be fitted, is provided, and a folding-back edge 9 is formed with a flat part 8. For the lid body 2, a peripheral wall part 11 is drawn while being extended from a top part 10, and the peripheral edge is bonded to the upper surface of a step part 7a to form a flange part 12, and the lid body 2 is formed so as to be fittable in the fitting part 7. An unsealing preventive member 3 is formed in such a manner that on a flat part 13 of the upper surface of the container main body 1, an internal surface part 14 and an external surface part 15 are extended, and an internal flange part 16 and an external flange part 17 are integrally connected. Thus, the lid body is surely bonded, and accidents can be prevented from happening, and the lid body can be easily removed without tilting the container.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is suitable for a plastic sheet packaging container used for storing food and the like by attaching a lid to a container body having an open top surface, and is particularly suitable for thermoforming such as pressurized vacuum molding. The present invention relates to a packaging container.

[0002]

2. Description of the Related Art This type of packaging container has an outer fitting type in which a lid is fitted to the outer periphery of the container body, and a lid is provided inside the peripheral portion of the container body, in a mode in which the lid is attached to the container body. It is classified as an inner fitting type in which the body fits, or a cover type in which a lid body is simply covered on the container body without providing a fitting portion on both bodies, but any of these is a distribution channel or sales In order to prevent the lid from coming off during the route and foreign substances from entering inside, cover the lid with the container body containing the contents and then fasten both bodies with adhesive tape, stretch film, etc. In many cases, it was used by wrapping the whole container.

[0003]

If an adhesive tape or a stretch film is used, it is possible to prevent the lid from being detached during handling of the container. It is not preferable for hygiene because it is easy to do.In addition, when peeling off the adhesive tape or stretch film etc. and opening the container, tilting or repeating the container may cause the stored food to lose its shape or spill. Or scattered outside, requiring careful handling.

Accordingly, the present invention has been made in consideration of the above problems, and has been described above. In order to prevent the lid from being detached from the container main body during handling, the lid is securely joined to the container main body, and the container is opened when the container is opened. It is an object of the present invention to provide a packaging container from which a lid can be easily removed by a smooth operation without tilting the container.

[0005]

Means for Solving the Problems To solve the above problems, a packaging container of the present invention is formed of a plastic sheet, and is formed by joining a container body having an open upper surface and a peripheral edge to an inner peripheral wall of the container body. It comprises a lid for closing the opening, and an unsealing prevention member joined to the peripheral edges of both bodies with the lid being placed on the container body.

[0006] In the above construction, the peripheral edge of the lid is formed as a horizontal flange portion, a step portion for supporting the flange portion is provided on the inner peripheral wall of the container body, and the peripheral edge of the upper end is formed as an outer folded edge. It is preferable that the opening prevention member be formed so as to cover the folded edge portion of the container body and the upper surface of the flange portion of the lid in a state where the member is placed on the main body. The unsealing prevention member can be formed using an elastic material such as plastic or rubber, and it is preferable to provide a notch for tearing around the periphery.

According to the above construction, since the unsealing preventing member overlaps the upper surface of the peripheral portion of the container body and the lid whose opening is closed, the lid hermetically seals the inside of the container and is firmly fixed to the container body. Further, the container can be opened simply by tearing off the opening prevention member from the cut portion or the like and removing it, and the container can be easily opened without tilting the container.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described with reference to the drawings. In the drawing, reference numeral 1 denotes a container main body, 2 denotes a lid, and 3 denotes an unsealing prevention member. The container of this example is formed in a so-called inner fitting type in which the lid 2 fits inside the container main body 1. It is a thing. Each of these elements can be molded by a thermoforming method such as air-pressure or vacuum molding using an appropriate plastic sheet such as stretched polystyrene, impact-resistant polystyrene, polypropylene, polyethylene, or polyethylene terephthalate, depending on the type of articles to be stored. it can. The lid 2 is preferably transparent so that the stored items can be seen, and its surface is preferably subjected to anti-fog processing.

The container body 1 rises the peripheral wall 5 at an appropriate height while expanding upward from the periphery of the substantially elliptical bottom portion 4 to define a storage portion 6 which is opened substantially in an elliptical shape in plan view. Along with
A fitting portion 7 to which the peripheral portion of the lid 2 can be fitted is provided inside the upper portion of the peripheral wall 5, and the peripheral portion of the fitting portion is flat or slightly curved with an appropriate width and protrudes outwardly. Is formed as a folded edge 9 which is slightly bent downward through the center.
The fitting portion 7 has an appropriate width to which the lower surface of the peripheral portion of the lid 2 can be joined, and is provided with a step portion 7a provided over the entire inner periphery of the peripheral wall 5;
An inclined surface portion 7b that is connected to the step portion and is inclined in a reverse taper shape and extends upward at an appropriate height so that the opening shape of the storage portion 6 is slightly smaller and narrower than the outer shape of the peripheral portion of the lid 2. The lid 2 is fitted over the upper end of the inclined surface 7b and fitted inside the peripheral wall 5 so as to be supported on the step 7a. The step 7a may be partially provided on a part of the peripheral wall 5 such as a corner as long as it can support the peripheral edge of the lid 2.

The lid 2 is stretched while expanding the peripheral wall 11 downwardly from the substantially elliptical top 10, and is appropriately and substantially horizontal so that the peripheral edge thereof can be joined to the upper surface of the step 7 a. It has a flange portion 12 extending in width, and is formed in a shape and size that can be fitted in the fitting portion 7 of the container body 1. The flange portion 12 may be partially provided on a part of the peripheral wall 11.

The unsealing prevention member 3 is provided on the flat portion 8 of the container body 1.
An inner surface portion 14 and an outer surface portion 15 extend downwardly at both inner and outer ends of a flat portion 13 having a flat surface substantially the same shape as the upper surface portion, and extend horizontally at an appropriate length to the edge portion of these both side portions. The inner flange portion 16 and the outer flange portion 17 are integrally connected, and in a state where the lid 2 is put on the container main body 1, a ring is formed so that the above-mentioned portions are attached to the entire periphery of the upper surface of the peripheral portion of the both bodies. It is formed in a shape. The inner side surface portion 14 is provided on the container body 1.
The inclined surface portion 7b is formed to be inclined from the flat portion 13 at substantially the same angle as the inclined surface portion 7b and to have substantially the same width (same height) as the surface portion.
Is formed so as to hang from the flat portion 13 by an appropriate length so as to be joined to the outer surface of the folded edge 9 of the container body 1. Therefore, in a state where the opening prevention member 3 is mounted, the inner surface portion 14 is supported on the inclined surface portion 7b, and the inner flange portion 16 connected to the edge portion of the surface portion is supported on the step portion 7a of the container body 1. The flange portion 12 of the lid 2 overlaps with the upper surface of the flange portion 12 of the lid 2 to hold the flange portion 12 of the lid 2 between the inner flange portion and the stepped portion 7a. The opening prevention member 3 can be fixed to the mounting position by joining to the inside and outside both side surfaces of the opening. Further, as shown in FIG. 1, a notch 18 for tearing is provided on the periphery of the outer flange portion 17 of the unsealing preventing member 3, and the unsealing preventing member 3 is cut by tearing it. The lid 2 can be removed. The cut portions 18 may be provided at a plurality of locations on the periphery of the unsealing prevention member 3. In addition, the drooping length of the outer flange portion 17 is determined when the opening prevention member 3 is removed.
It is appropriate to set the thickness to about 8 to 15 mm so that a finger can be inserted between the outer flange portion 17 and the outer peripheral wall of the container body 1 (arrow A in FIG. 3) and hooked.

According to the thus-formed packaging container of the present embodiment, articles to be packaged such as food are stored in the container body 1.
The cover 2 can be fixed to the container body 1 by fitting the cover 2 to the fitting portion 7 of the container body 1 and mounting the opening prevention member 3 thereon. That is, in such a mounted state, as shown in FIG. 3, the unsealing prevention member 3 is joined to the inclined surface portion 7b and the folded edge 9 of the container main body 1 and fixed to the container main body 1, and the inner flange is formed. Since the portion 16 overlaps and joins the upper surface of the flange portion 12 of the lid 2 supported on the step 7a of the container body 1, the lid 2 is held at this position to seal the inside of the container, and during handling of the container. ,
Inadvertently creating a gap at the joint with the container body 1,
It is stably fixed to the container main body 1 without detaching from the container main body 1. The attachment of the opening prevention member 3 is performed in advance by forming the opening prevention member 3 in the above-described shape and fitting the opening prevention member 3 from above the container body 1 covered with the lid 2 or by mounting the container 2 covered with the lid 2. The main body 1 is set in a mold, and the opening prevention member 3 is formed by an appropriate method such as injection molding or vacuum molding so that the opening prevention member 3 is mounted at the same time. Alternatively, the main body 1 is mounted on the peripheral portion of the container main body 1 covered with the lid 2. The shrinkable film can be stacked by heating and shrink-wrapped by heating.

Further, when opening the container, a finger is hooked on the outer flange portion 17 of the opening prevention member 3, or a cutout portion 18 for tearing is picked up, the opening is cut off, the opening prevention member 3 is removed, and the lid 2 is removed. Can be easily detached from the container body 1 and removed. That is, the opening prevention member 3
Since a part of it can be removed by tearing it along the notch 18, etc., the opening operation can be performed while the container is placed on a table or the like. There is no danger of spilling things, there is no need to open, and handling is simple.

In the packaging container of the present invention, the shape of the container body and the lid, the shape and size of the storage portion and the opening, and the shape of the flange portion may be elliptical or circular depending on the type, shape, amount, etc. of the articles to be stored. Can be appropriately formed such as a curved surface or a polygon. Also,
The unsealing prevention member is joined to both peripheral portions of the container body and the lid to maintain the fastening of both bodies, and as long as it can be attached to both bodies without being detached, regardless of its shape and material, for example, It may be made of an elastic material such as rubber, which may be pressed against the peripheral edges of both bodies.

[0015]

As described above, according to the packaging container of the present invention, the lid is securely joined to the container main body by the unsealing prevention member, thereby preventing the lid from coming off the container main body during handling. In addition, when the container is opened, a part of the opening prevention member may be cut off, and the lid can be easily removed by a smooth operation without tilting the container.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of one embodiment of a packaging container of the present invention.

FIG. 2 is an enlarged sectional view of a main part of the container of FIG.

FIG. 3 is an enlarged sectional view of a main part of the container of FIG. 1 in a state where an opening prevention member is mounted.

[Explanation of symbols]

 1 Container body 2 Lid 3 Unsealing prevention member 7 Fitting part 7a Step part 7b Inclined surface part 9 Folding edge 12 Flange part 14 Inner surface part 15 Outer side part 16 Inner flange part 17 Outer flange part 18 Notch part

Claims (3)

[Claims] A container body having an open upper surface; a lid body having a peripheral portion joined to an inner peripheral wall of the container body to close the opening;
A packaging container made of a plastic sheet, comprising an unsealing prevention member joined to the peripheral portions of both bodies while the lid is placed on the container body. 2. The container according to claim 1, wherein a peripheral edge of the lid is formed as a horizontal flange, a step supporting the flange is provided on an inner peripheral wall of the container body, and an upper peripheral edge is formed as an outer folded edge. 2. The packaging container according to claim 1, wherein the opening prevention member is formed so as to cover the folded edge of the container body and the upper surface of the flange portion of the lid in a state where the container is placed on the container. 3. The packaging container according to claim 1, wherein a notch for tearing is provided on a periphery of the opening prevention member.