JP2011037470A - Packaging container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an internally-fitting type packaging container capable of suppressing careless detachment of a lid even when the external force is applied to the packaging container and causes the container to be deformed. <P>SOLUTION: The packaging container 1 comprises a container body for storing a content, and a lid capable of closing an opening part of the container body, and when the outer surface of a groove formed along a circumferential edge of the lid is fitted to the inner circumferential surface of the opening part of the container body, the lid is fixed to the container body in an internally fitted state. The container body 10 has a shape keeping means for keeping the shape of the groove so that the outer surface of the groove 23 may not be separated from the inner circumferential surface of the opening part of the container body 10 when the external force to deform the packaging container in a lid-closed state is applied. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a packaging container that can mainly contain various processed foods and the like, and more particularly, to a packaging container in which a lid is difficult to come off from a container body.

  As this type of packaging container, a container having a container main body for storing contents and a lid for closing the opening of the container main body is generally known. Furthermore, the packaging container is roughly classified into two types depending on how the lid is fixed, and a so-called outer fitting container for fixing the lid by fitting it from the outer periphery of the container body, and the lid as a container. There is a so-called inner fitting container that is fitted and fixed from the inside of the peripheral edge of the main body.

  Among these, the inner fitting container forms a reverse taper surface or a recess along the periphery of the container body as described in, for example, Patent Document 1 and Patent Document 2 below, and the outer periphery of the lid body. Also, a reverse taper surface and a convex part are formed, and the reverse taper surfaces or the concave part and the convex part are fitted to each other to improve the sealing performance. For example, the contents containing liquid are accommodated. Often used for occasions.

JP 2004-315037 A JP 2005-306390 A

  By the way, since this type of packaging container is manufactured by molding a thin synthetic resin sheet into a desired shape, for example, when the opposing side of the container is strongly grasped, the packaging container is used. When an external force is applied to the container body, the container body and the cover body are relatively easily deformed.

  However, when the container body and the lid body are deformed in the inner fitting container as described above, even the lid body fixed relatively firmly by the inner fitting may be inadvertently detached from the container body. Because it is an internal fitting container with excellent sealing properties, contents containing liquid are often stored, and if the lid is removed carelessly, the stored liquid may spill. obtain.

  In view of the problems of the prior art as described above, the present invention provides an internal fitting that can prevent the lid from being inadvertently removed even when an external force is applied to the packaging container and the container is deformed. The object is to provide a type of packaging container.

  A packaging container according to the present invention includes a container main body for containing contents and a lid that can close an opening of the container main body, and a groove formed along the periphery of the lid. A packaging container in which an outer side surface is fitted to the inner peripheral surface of the opening of the container body so that the lid body is fixed to the container body in an internally fitted state, and the container body is in a closed state. A shape holding means for holding the shape of the groove is provided so that the outer surface of the groove is not separated from the inner peripheral surface of the opening of the container body when an external force that deforms the packaging container is applied. To do.

  According to the packaging container having such a configuration, the container body is provided with the shape holding means for holding the shape of the groove so that the outer surface of the groove is not separated from the inner peripheral surface of the opening of the container body. Even when an external force that deforms the container is applied, the outer surface of the groove of the lid body and the inner peripheral surface of the opening of the container body are difficult to be separated from each other. It can prevent the body from being inadvertently removed.

  The packaging container according to the present invention is preferably characterized in that the shape holding means is an abutting portion provided in the container body so as to abut at least a part of the inner side surface of the groove.

  According to the packaging container having such a configuration, the shape holding means is an abutting portion provided in the container main body so as to abut on at least a part of the inner side surface of the groove. Even when an external force that deforms the packaging container is applied to the side surface of the container body that is less likely to be separated from the inner peripheral surface of the opening, the inner fitting state is maintained, and the lid is inadvertently It can be prevented from coming off.

  Furthermore, the packaging container according to the present invention is preferably formed in a reverse taper shape such that the inner peripheral surface of the opening of the container body that fits with the outer surface of the groove of the lid body is reduced in diameter upward. It is characterized by being made.

  According to the packaging container having such a configuration, the reversely tapered opening inner peripheral surface formed in the container body and the outer surface of the groove of the lid are fitted, and the shape of the groove is formed by the shape holding means. Since the container is held, the container itself is hardly deformed, and even if the container is deformed by an external force, the lid body is extremely difficult to come off.

  Thus, according to the packaging container according to the present invention, even when an external force acts on the packaging container and the container is deformed, it is possible to prevent the lid from being inadvertently removed. it can.

It is the schematic which showed one Embodiment of the packaging container which concerns on this invention, Comprising: Sectional drawing in the cut surface which passes along the protruding part which is a shape holding means. 1 is a schematic view showing an embodiment of a packaging container according to the present invention, and is a cross-sectional view taken along a cut surface that does not pass through a raised portion that is a shape holding means. BRIEF DESCRIPTION OF THE DRAWINGS It is a top view of the container main body which showed schematically one Embodiment of the packaging container which concerns on this invention, and the II-I arrow sectional drawing is sectional drawing of the container main body in FIG. Sectional drawing is sectional drawing of the container main body in FIG.

  Hereinafter, the packaging container according to the present invention will be described in detail with reference to an embodiment. In the present invention booklet, “outward” means a direction extending substantially horizontally from the inside of the container toward the outside of the container. “Inward” means a direction extending substantially horizontally from the outside of the container to the inside of the container, and “upward” and “downward” mean that the container is placed on a horizontal surface with the opening up. This means the upper and lower sides in the vertical direction. Further, “hanging down” is not limited to a case where it hangs down strictly in the vertical direction, but is a concept including a case where it tilts downward with an inclination angle.

  As shown in FIGS. 1 and 2, the packaging container 1 according to the present embodiment includes a container body 10 having a substantially rectangular shape in plan view for accommodating contents, and a lid for closing the opening of the container body 10. 20.

  As shown in FIG. 2, the container main body 10 includes a bottom portion 11 on which contents are placed, a main body peripheral wall portion 12 erected while being inclined obliquely upward from the periphery of the bottom portion 11, and the main body peripheral wall portion 12. A first flange portion 13 extending outward from the upper end of the first flange portion 13, an inner peripheral surface 14 of the opening portion extending upward from the periphery of the first flange portion 13, and an outer periphery of the inner peripheral surface of the opening portion. The main body 2nd flange part 15 extended toward the direction, and the protruding part 16 formed along the periphery of this main body 2nd flange part are provided.

  More specifically, as shown in FIGS. 1 and 2, the inner peripheral surface 14 of the opening is reduced in diameter from the periphery of the main body first flange portion 13 (that is, the opening is narrowed). It has the reverse taper part 14a extended, and the taper part 14b extended so that it may expand from the upper end of this reverse taper part 14a upwards (namely, opening expands). The taper portion 14b guides the groove of the lid downward and can quickly fit the container body and the lid.

  Further, as shown in FIGS. 1 and 3, at the center part of the pair of long sides of the container body 10, an extension part 17 that extends the first flange part 13 inward, and the extension A protruding portion 18 protruding upward from the protruding portion 17 is provided. In other words, an extending portion 17 projecting inward so as to be flush with the first flange portion 13 is formed, and a raised portion 18 protruding upward is formed so as to face the reverse tapered portion 14a. It has become a thing. The raised portion 18 corresponds to the shape holding means in this embodiment. The size of the raised portion 18 is not particularly limited, but from the viewpoint of not hindering the contents and not reducing the internal volume of the container, a width of about several mm to 2 cm, and Examples having a height of about 2 mm to 5 mm are exemplified.

  In the present embodiment, a concave groove 19 that is recessed downward from the bottom portion 11 is formed along the outer peripheral portion of the bottom portion 11, that is, the main body peripheral wall portion 12. By providing such a concave groove 19, water droplets flowing down from the lid and the peripheral wall portion of the main body can be stored in the concave groove 19 and the contents can be prevented from getting wet. In addition, the concave groove 19 engages with an uneven portion (not shown) formed on the lid top plate when a plurality of the packaging containers are stacked, and the effect that the stacked containers are difficult to slide off. Also demonstrates.

  On the other hand, as shown in FIGS. 1 and 2, the lid body 20 includes a top plate portion 21 that faces the bottom portion 11, and a lid peripheral wall portion that is inclined downward from the periphery of the top plate portion 21 outward. 22. A groove 23 is formed along the periphery of the lid 20. More specifically, the groove 23 includes an inner side surface 23a depending from the peripheral edge of the lid, a lid first flange portion (groove bottom portion) 23b extending horizontally outward from the lower end of the inner side surface 23a, And an outer surface 23c extending upward along the outer edge of the lid first flange portion 23b, and is formed in an annular shape along the periphery of the lid. The outer side surface 23c of the groove is a portion that is fitted to the reverse tapered portion 14a of the container body, and is formed so as to be slightly reduced in diameter upward as in the reverse tapered portion 14a.

  A lid second flange portion 24 extending horizontally from the upper end of the outer surface 23c is formed outside the groove 23, and a knob extending outward from a part of the periphery of the lid second flange portion. A piece (not shown) is formed. The knob is for lifting and opening the lid that is fitted to the container body.

  As shown in FIGS. 1 and 2, when the container body 10 and the lid body 20 are fitted, the reverse tapered surface 14a of the container body 1 and the outer peripheral surface 23c of the groove of the lid body come into contact with each other, and the lid The body 20 is in a so-called internally fitted state with respect to the container body 10. Furthermore, in the packaging container according to the present embodiment, the main body first flange portion 13 and the lid body first flange portion (groove bottom side) 23b come into contact with each other, and the main body second flange portion 15 and the lid body second flange portion 24 Are in contact with each other to form a double seal.

  Furthermore, as shown in the cross section of FIG. 1, the inner side surface 23 a constituting the groove 23 of the lid 20 has a raised portion 18 that is raised upward from the tip of the extending portion 17 in the central portion of the long side of the container. Both are in contact. That is, the groove 23 in this embodiment is in contact with the reverse taper portion 14a over the entire circumference, and in the center of the long side of the container, the reverse taper portion 14a and the raised portion 18 cause the inner and outer sides of the container to be inward. It is sandwiched from two sides. Moreover, in the center part of the container main body 1, the long part center part of the container main body 1 is formed by the extended part 17 extended inward from the main body 1st flange part 13 and the protruding part 18 which protruded upward from the front-end | tip. In addition, a receiving portion having a substantially U shape in sectional view is formed, and the groove 23 of the lid body 20 is also held by the receiving portion having a substantially U shape in sectional view.

  According to the packaging container of the present embodiment having such a configuration, the groove of the lid body is deformed inward of the container by the presence of the raised portion 18 in the center part of the opposing long side of the container. When the container itself is hardly deformed by being sandwiched from the two sides by the reverse tapered portion 14a and the raised portion 18, and as a result, the container is deformed by strongly grasping the packaging container. Even so, the fitting between the outer side surface 23c of the groove 23 and the reverse tapered portion 14a of the container body 10 can be easily maintained, and the lid 20 can be prevented from being inadvertently detached from the container body 10. it can.

  Further, in the packaging container in which the container body 10 and the lid 20 are brought into close contact with each other by the double inner and outer flanges as in the present embodiment and the sealing property is improved, when the contents are heated in a microwave oven or the like The internal pressure of the container increases and the lid may come off simply by lightly grasping the container. However, by providing the shape holding means as in the present invention, the lid can be prevented from coming off even in such a case. be able to.

  Further, in the packaging container according to this embodiment, since the raised portion 16 is formed around the main body second flange portion 15, the raised portion 16 increases the rigidity of the container main body 10 and an external force is applied. The amount of deformation can be reduced to contribute to prevention of the lid from coming off.

  Although not specifically mentioned, the container main body 10 and the lid body 20 in the present embodiment can be formed by, for example, a thermoforming method, and the boundary portions of the above-described parts are continuous and necessary. It is formed in a curved (rounded) manner with a corresponding curvature radius.

  The packaging container according to the present invention is not limited to the above-described embodiment, and it is needless to say that various changes can be made without departing from the gist of the present invention.

  For example, in the above-described embodiment, a case has been described in which ridges that are shape holding means are formed in two places in total, one at the center of the container long side, but may be installed at a plurality of places on the container long side. Or you may provide in a container short side side or a corner part.

  In addition, the shape holding means is not limited to the configuration of the raised portion employed in the above embodiment, and for example, a concave portion is formed in the first flange portion of the main body, and the lid flange portion of the lid body projects downward. A configuration in which the shape of the groove is maintained so that the outer surface of the groove is not separated from the inner peripheral surface of the opening of the container body by engaging (contacting) the convex portion and the concave portion in a fitted state. It is good.

  Furthermore, when the partition part for partitioning the contents and storing the contents in the container main body is formed so as to protrude from the bottom surface of the container, the end of the protrusion comes into contact with the inner surface of the groove of the lid It may be configured as described above, and the end of the raised portion may function as a shape holding means.

  In the above embodiment, the case where the container body 10 and the lid body 20 are rectangular has been described, but the present invention is not limited to the horizontal cross-sectional shape of the container, and any shape can be adopted. For example, a polygonal shape, an elliptical shape, a circular shape, or the like can be adopted. In that case, the said protruding part which is a shape holding | maintenance means can be provided suitably at intervals, for example, can be provided in two places on a diagonal, or four places at 90 degree intervals in the circumferential direction.

  Moreover, in order to reduce the ease of detachment of the lid body due to an increase in internal pressure during heating, it is possible to form holes, cuts, or the like in the lid body.

  Further, although not shown in the drawings, the edge of the lid body is subjected to fine unevenness processing and embossing by thermoforming, so that the outer edge line of a waveform (sine wave, triangular wave, trapezoidal wave, etc.) in side view, that is, You may make it provide the outer edge line which is not a straight line. Thereby, since the sharpness of the edge of the outer periphery of the lid is eliminated, the fingertip when opening and closing the lid can be protected, and when wrapping using a packaging film (not shown) The packaging film can be prevented from tearing. Further, the strength of the outer peripheral edge of the lid is increased, and there is an effect of preventing the lid from tearing. In addition, you may give various measures for eliminating the sharpness of the edge of an outer periphery mentioned above to the outer periphery part of a container main body.

DESCRIPTION OF SYMBOLS 1 ... Container for packaging, 10 ... Container main body, 11 ... Bottom part, 12 ... Main body surrounding wall part, 13 ... Main body 1st flange part, 14 ... Opening inner peripheral surface, 14a ... Reverse taper part, 14b ... Tapered part, 15 ... Main body Second flange portion, 16 ... raised portion, 17 ... extended portion, 18 ... raised portion, 20 ... lid body, 21 ... lid top plate, 22 ... lid peripheral wall portion, 23 ... groove, 23a ... inner surface, 23b ... groove bottom (lid flange), 23c ... outer surface, 24 ... lid second flange

Claims (3)

A container main body for containing contents and a lid capable of closing the opening of the container main body, and an outer surface of a groove formed along the periphery of the lid is within the opening of the container main body. A packaging container in which the lid is fixed to the container body in an internally fitted state by being fitted to a peripheral surface,
When the external force that deforms the packaging container in the closed state is applied to the container body, the shape is maintained so that the outer surface of the groove is not separated from the inner peripheral surface of the opening of the container body. A packaging container comprising means.   The packaging container according to claim 1, wherein the shape holding means is an abutting portion provided in the container body so as to abut against at least a part of the inner side surface of the groove.   3. The inner peripheral surface of the opening of the container body that fits with the outer surface of the groove of the lid is formed in a reverse taper shape so as to reduce the diameter upward. Packaging containers.

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