JP2002037334A - Packaging container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To devise a structure of a tab and a flange of a container body to easily remove a lid even in the case of an in-fitted container which is formed with vacuum molding. SOLUTION: A recessed stage 4 having an external surface in a tapered form slightly reverse to a horizontal face is formed at an upper end of a peripheral face of a container body 1. An outward folding flange 5 is formed unevenly in the inside and the outside on an upper part wherein the inside is a recessed face 5b slightly lower than a protruding face 5a on the outside. A corner recessed face 5c wider than the tab 12 is formed on an upper surface of the flange at a corner. An upward protruding line 6 is formed along the inside of the corner recessed face in a direction crossing with a direction of the tab 12 extending. An outward folding fitting rim 10 to be fitted in the recessed stage 4 is formed at a lower periphery of the lid 7, and its external end is folded approximately horizontally to form a rim 11 to be joined with the recessed face 5b. The tab 12 of such a size that can be received in the corner recessed face 5c is extended from the corner. A protrusion 12a which protrudes slightly downward is formed within a plane of the tab so that it can come into contact with the upper protruding line 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging container formed by pressurized air vacuum molding, wherein a lid of a so-called inner fitting container in which a lid is fitted inside a flange formed on a peripheral edge of a container body, is easily removed. About.

[0002]

2. Description of the Related Art In a conventional inner fitting container of a pressurized air vacuum molding, a fitting portion between a lid and a container body is formed in a slightly inverted tapered shape.
The lid is press-fitted. For this reason, since the lid is hard to come off, a tab is extended at the corner of the lid, and the tab is picked up and the lid is pulled up, so that the lid can be easily removed and cleaned.

[0003]

However, since the peripheral edge of the lid is punched from the horizontal sheet surface after molding, the extended knob is formed in a horizontal state, and is joined to the flange surface of the container body in the covered state. It was in a state. Therefore, when trying to open the lid and try to pinch the knob, it is necessary to raise the fingernail that has been joined to the flange surface and pull it off several times, so that the knob is difficult to pick, There was a problem that it was difficult to open the lid smoothly. The present invention has been made in order to solve such a problem, and in order to make it easy to remove the lid even in the case of an inner fitting container, the configuration of the knob and the flange of the container main body is devised. No container will be provided.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a container body having a concave step portion into which a lid can be fitted inside an outer bent flange formed on an upper peripheral edge, and a lower peripheral edge. A lid having a fitting edge folded back into a U-shape, a compressed air vacuum-molded packaging container, a tab extending outward from a corner of the lid, and a corner portion of a flange of the container body. Is characterized in that a packaging container is formed by forming an upper ridge that can contact the lower side of the knob in the lid fitted state and deflect the knob upward, in the direction intersecting with the extending direction of the knob. And Preferably, a downward projection is formed in the knob. Further, according to the present invention, in addition to the above, the upper surface of the outer bent flange portion of the container body is formed in a step-like manner inside and outside, the inner portion is formed as a lower concave surface with respect to the convex surface of the outer portion, and the convex portion is cut off at the corner and picked. Form a concave corner with a width equal to or greater than the width of the piece, form an upper ridge in this concave corner,
It is also characterized in that a packaging container is formed by forming an edge in contact with the concave surface on the outer periphery of the fitting edge of the lid.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The container body 1 is provided with a stepped portion at the upper end of the peripheral side surface 3 rising from the bottom surface 2, and the stepped portion is connected to the lower surface of the fitting edge so that the fitting edge 10 of the lid 7 can be fitted. Formed as a concave stepped portion 4 having a rising outer surface of a slightly inverted tapered surface joined to an abutting horizontal surface and an outer surface of a fitting edge, and an outwardly bent flange portion 5 is formed on the upper side. The upper surface of the portion 5 is formed in a stepped shape between the inside and the outside, the inner portion is a concave surface 5b slightly lower than the convex surface 5a of the outer portion, and the flange upper surface at the opposed two corners (shown) or at the four corners is the convex surface 5a on both sides. , 5a to form a corner concave surface 5c having a width substantially equal to or greater than the width of the knob 12;
An upper ridge 6 is formed along the inner side of c, preferably in a direction intersecting with the direction in which the knob 12 extends, preferably over both ends of the convex surfaces 5a, 5a. The height of the upper ridge 6 is desirably substantially the same as or slightly lower than that of the convex surface 5a.

The lid 7 has a peripheral bottom surface 9 inclined downward from the top surface 8.
Forming a fitting edge 10 which is bent into a U-shape on the lower peripheral edge of
The fitting edge 10 is provided with a lower surface in contact with the horizontal surface of the concave step 4 and a slightly reverse tapered outer surface joined to the outer surface of the concave step. Bent outwardly in a substantially horizontal shape to form an edge 11 to be joined to the concave surface 5b, and to fit in the corner concave surface 5c outside the opposite two corners (shown) or one to four corners. Pick 12
The knob 12 has a projection 12 slightly projecting downward.
a is formed so as to be able to contact the upper ridge 6. The above protrusion 1
2a, a large number of small projections may be formed in the plane of the knob as shown in FIGS. 2 and 4, or one large projection may be provided in the plane as shown in FIGS. 5 and 6
As described above, the tip portion 12b of the knob piece 12 may be bent so as to slightly float upward so as to be more easily gripped.

The U-shaped shape of the fitting edge 10 may be an arc-shaped cross section, an upward U-shape, or another shape. It is most preferable to provide a slightly inverted tapered portion of the fitting edge portion 10 and the concave step portion 4 near the corner,
It may be formed on the entire circumference or on a part of each side.

[0008]

According to the present invention, with the above configuration,
In the container of the inner fitting configuration, even if a knob is extended at the corner of the lid and formed so as to match the concave portion formed at the corner of the container body, the knob is formed on the upper ridge. The lid can be closed in a state in which it comes into contact with the tip of the container body and rises from the flange surface of the container body, so that the knob can be easily and reliably gripped, and the lid can be easily opened. If the knob is provided with the lower protrusion, the degree of protrusion of one or both of the upper protrusion and the lower protrusion can be reduced. By making the inside of the flange surface concave and the corners concave, the edge of the lid fits well, the lid can be closed securely, and only the knobs protrude extremely upward and outward and are easily caught or hindered Can be prevented.

[Brief description of the drawings]

FIG. 1 is an exploded view of a main part of the present invention, in which a container body is a perspective view from above and a lid is seen from below.

FIG. 2 is a partial sectional view taken along line II-II of FIG.

FIG. 3 is a perspective view of the packaging container according to the present invention in an opened state.

FIG. 4 is a plan view of the packaging container in a closed state.

FIG. 5 is a partial plan view showing another example of a knob piece.

FIG. 6 is an end view taken along the line VI-VI of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container main body 2 Bottom surface 3 Side surface 4 Concave step 5 Flange 5a Convex surface 5b Concave surface 5c Corner concave surface 6 Upper ridge 7 Cover 8 Top surface 9 Side surface 10 Fitting edge 11 Edge 12 Knob 12a Projection 12b Tip

Claims (3)

[Claims] 1. A container body having a concave step portion into which a lid can be fitted inside an outer bent flange portion formed on an upper peripheral edge, and a lid having a U-shaped fitting edge portion folded on a lower peripheral edge. In the compressed air vacuum molded packaging container, a knob is extended outward from the corner of the lid, and the corner portion of the flange of the container body is brought into contact with the lower side of the knob in a lid-fitted state and is gripped. A packaging container having a configuration in which an upper ridge capable of bending a piece upward is formed in a direction intersecting with a direction in which a knob piece extends. 2. A container body having a concave step portion into which a lid can be fitted inside an outer bent collar portion formed on an upper peripheral edge, and a lid having a U-shaped fitting edge portion folded on a lower peripheral edge. In a compressed air vacuum molded packaging container, a knob is extended outward from the corner of the lid, a downward projection is formed in the knob, and the lid is fitted to the corner of the flange of the container body. A packaging container having a configuration in which an upper ridge that can abut on a lower side of a knob in the state and bend the knob upward is formed in a direction intersecting with a direction in which the knob extends. 3. An outer bent flange upper surface of the container main body is formed in a stepped shape inside and outside, an inner portion is formed as a concave surface which is lower than a convex surface of an outer portion, and a convex surface is divided at a corner portion to be larger than a width of a knob. 2. A configuration in which a corner concave surface having a width of is formed, an upper ridge is formed in the corner concave surface, and an edge in contact with the concave surface is formed on the outer periphery of the fitting edge of the lid. Or the packaging container according to 2.