JP5490387B2 - Packaging container - Google Patents

Description

  The present invention relates to a packaging container suitable for containing cooked food such as sugar beet.

In department stores and supermarkets, plastic packaging containers that contain foods such as cut vegetables and prepared foods are used, and these foods contained in the packaging containers are displayed on display shelves as they are. Sold.
Such a packaging container of this type generally includes a bottom wall, a peripheral wall rising from the outer periphery of the bottom wall, a container body including a flange extending outward from the upper end of the peripheral wall, a top wall, Consists of a lid that includes a side wall that descends from the top wall and a flange that extends outward from the lower end of the side wall, and is configured so that the container body and the lid can be opened and closed by a fitting structure. Has been.

  The flange formed on the container body and the lid can increase the strength of the container body and the lid by being formed continuously with the peripheral wall, etc., so the amount of plastic material used can be reduced by thinning the container. In the closed state, the container main body and the flange of the lid body are brought into contact with each other, whereby the inside and outside of the container can be shut off to enhance the sealed state.

  Therefore, in the packaging container for containing foods as described above, conventionally, as shown in FIG. 5, not only the flange (outer flange) 510 is provided at the upper end of the opening of the container body 500, but also the inner side of the outer flange 510 is provided. By forming a reverse taper portion 520 extending outward from the outer flange 510 toward the outside, a fitting structure with the lid 600 is provided, and an inner side extending inward from the lower end of the reverse taper portion 520 There has also been proposed a packaging container in which the strength is improved by providing the flange 530.

  Further, as described in Patent Document 1 below, in order to further enhance the sealed state inside the container, such an outer flange and an inner flange are employed, and these are configured to abut on the flange formed on the lid. Packaging containers are also known.

Japanese Utility Model Publication No. 1-91757

However, when it is intended to store the stored items such as cut vegetables and side dishes in the packaging container having such a configuration, in the step of putting these stored items into the container body, on the flange surface such as the inner flange and the outer flange, Some of the cut vegetables and side dishes may adhere to the reverse taper portion provided between them, and when the lid is closed in the state where they are attached, i.e., with the contents being bitten, There is a problem that the displayed products look bad.
In addition, it is possible to remove the contents once adhered before closing the lid, but this causes a new problem that the process becomes complicated.

  In addition, it may be possible to prevent biting by omitting such a flange, but if the flange is not provided, the strength of the container will be reduced, and the demand for thinner containers due to soaring raw materials will be met. The problem that it is not possible arises.

  The present invention has been made in view of such conventional problems, and prevents the contents from being bitten between the lid and the container body when the contents are put in, so that the appearance of the product can be improved. An object is to provide a packaging container that can improve the strength and reduce the amount of raw materials used while improving the strength.

A packaging container according to the present invention includes a container main body having a bottom portion, a peripheral wall rising from the outer periphery of the bottom portion and having an opening upward, and a lid body fitted inside the container main body to close the opening. An outer flange portion extending outward from the opening edge is formed on the container body, and an outer taper portion inclined toward the inner side of the container is formed inside the outer flange portion. A reverse taper portion is formed continuously with the outer flange portion, and a reverse taper portion is formed on the inner side of the outer taper portion so as to fit the lid inside. The lower end of the reverse taper portion is further formed. An inner flange portion extending inward from the inner flange portion is formed, and an inner edge of the inner flange portion is configured to be located below a virtual extension line of the outer tapered portion, and a container is disposed inside the inner flange portion. Inside tilted inward Tapered portion is formed continuously from the inner flange portion, the inner tapered portion is characterized in that it is provided continuously on the top of the peripheral wall standing upright from the outer periphery of the bottom.

  According to the packaging container having such a configuration, since the outer taper portion that inclines toward the inner side of the container is continuously formed inside the outer flange portion, the cut vegetables and the side dishes that ride on the vicinity of the outer flange portion. It is easy for a piece of the contained item to slip into the inside of the container due to the inclination of the outer tapered portion, and as a result, the contained item is bitten between the container body and the lid around the opening of the container. Deterioration of appearance is prevented.

In addition, the outer flange portion, the outer tapered portion, the reverse tapered portion, and the inner flange portion are continuously formed, whereby the strength of the container body is increased and the container body can be thinned and used. It is possible to reduce the amount of plastic material.
Further, according to the packaging container of the present invention, the flange portion is formed continuously on the inner side (lower side) and the outer side (upper side) of the reverse taper portion so as to sandwich the reverse taper portion. The strength of the container main body in the vicinity of the tapered portion is further increased, and inadvertent dropping of the lid is prevented.

Packaging container according to the present invention, the inner edge of the front Symbol inner flange portion is configured to be positioned below the imaginary extension of the outer tapered portion.

  According to the packaging container having such a configuration, the inner peripheral edge of the inner flange portion is positioned below the imaginary extension line of the outer tapered portion, so that the contents slid down from the outer tapered portion ride on the inner flange portion. It becomes easy to fall to the inside of the container without.

Packaging container according to the present invention, the inside of the front Symbol inner flange inner tapered portion inclined towards the container inside is formed continuously from the inner flange portion.

  According to the packaging container having such a configuration, by forming the inner tapered portion in addition to the outer tapered portion, it can be a packaging container having a large opening projecting outward from the peripheral wall rising from the bottom portion, It is possible to prevent the contents from adhering to the periphery of the opening when the contents are charged.

  The packaging container according to the present invention is preferably configured such that the inclination angle of the inner tapered portion is closer to the vertical than the inclination angle of the outer tapered portion.

  According to the packaging container having such a configuration, the inner taper portion is formed at an inclination angle closer to the vertical than the outer taper portion, so that the sliding action of the contents by the inner taper portion becomes more prominent. It is possible to further prevent the contents from adhering to the flange portion.

  In addition, the packaging container according to the present invention is preferably provided with a hanging portion extending downward on the outside of the outer flange portion.

  According to the packaging container having such a configuration, since the drooping portion extending downward is provided outside the outer flange portion, it is possible to further increase the strength of the container body as well as the outer flange portion. Become.

  As described above, according to the packaging container according to the present invention, when the contents are accommodated, the contents are prevented from being bitten between the lid and the container body, thereby preventing the appearance of the product from being deteriorated. There is an effect of obtaining. In addition, since the strength of the container can be increased, there is an effect that the amount of raw material used can be reduced by making the container thinner.

FIG. 1 is a perspective view showing an embodiment of a packaging container according to the present invention, showing a state in which a lid is removed from a container body, and FIG. 2 is a view taken along line II of FIG. It is sectional drawing which showed the cross section.
As shown in FIGS. 1 and 2, the packaging container 1 of the present embodiment includes a container body 10 having an opening 100 facing upward, and a lid 20 that is fitted inside the container body 10 so as to close the opening 100. I have.

  The container body 10 in the present embodiment includes a bottom portion 101 and a peripheral wall 102 that stands up from the outer periphery of the bottom portion 101, and an inner taper that is further provided continuously from the peripheral wall 102 at the top of the peripheral wall 102. Portion 103, inner flange portion 104 extending horizontally outward from the upper edge of inner tapered portion 103, and reverse tapered portion 105 extending upward from the outer edge of inner flange portion 104. And an outer tapered portion 106 extending from the upper edge of the reverse tapered portion 105 and an outer flange portion 107 extending horizontally from the upper edge of the outer tapered portion 106 to the outside.

  The bottom portion 101 according to the present embodiment is formed in a substantially rectangular shape in plan view, and accordingly, the peripheral wall 102 rising from the bottom portion 101 is formed in a rectangular tube shape corresponding to the bottom portion 101. ing. Furthermore, the peripheral wall 102 according to the present embodiment is formed so as to gradually expand upward.

A rectangular reinforcing rib 101a is formed on the bottom portion 101 so as to protrude along the inside of the outer periphery of the bottom portion 101.
In addition, a plurality of mountain-shaped ribs 102a extending in the vertical direction are formed on the peripheral wall 102 at intervals in the circumferential direction.

The inner tapered portion 103 is formed to have an inclined surface that inclines downward at a predetermined angle toward the inner side with respect to a horizontal plane (not shown) and reduces the inner space from the upper end toward the lower end. The upper end of the inner wall 104 is formed to be continuous with the peripheral wall 102, and the upper end is formed to be continuous with the inner flange portion 104.
Similarly, the outer tapered portion 106 according to the present embodiment also has an inclined surface that inclines downward at a predetermined angle toward the inside with respect to the horizontal plane and reduces the inner space from the upper end toward the lower end. Is formed. The outer taper portion 106 is formed to be continuous with the reverse taper portion 105 at the lower end, and is formed to be continuous with the outer flange portion 107 at the upper end.

Specifically, the angles formed by the inner tapered portion 103 and the outer tapered portion 106 with respect to the horizontal plane are preferably θ1 and θ2, respectively, preferably θ1 ≧ θ2. More specifically, the angle θ1 formed by the inner tapered portion 103 with the horizontal plane is preferably in the range of 45 ° ≦ θ1 ≦ 80 °, and more preferably in the range of 50 ° ≦ θ1 ≦ 80 °. In addition, the angle θ2 formed by the outer tapered portion 106 and the horizontal plane is preferably in the range of 30 ° ≦ θ2 ≦ 60 °, and more preferably in the range of 40 ° ≦ θ2 ≦ 50 °.
In the present embodiment, the inner tapered portion 103 is configured to be substantially parallel to the outer tapered portion 106 (that is, θ1 = θ2).
Furthermore, in the present embodiment, the inner tapered portion 103 and the outer tapered portion 106 are formed over the entire circumference of the container body 10.

Between the inner tapered portion 103 and the outer tapered portion 106, the inner flange portion 104 and the reverse tapered portion 105 are continuously formed.
In the present embodiment, the inner flange portion 104 is formed to have a horizontal plane extending substantially horizontally, and the reverse taper portion 105 is upwardly inward with respect to the horizontal plane by a predetermined angle (for example, , 80 to 85 °), and has an inclined surface that reduces the inner space from the lower end toward the upper end.
Further, since the inner flange portion 104 and the reverse taper portion 105 are formed over the entire circumference of the container main body 10, the inner flange portion 104 and the reverse taper portion 105 are combined to form an annular shape that bulges outward from the container main body 10. The annular groove functions as a recess for fitting the lid inside when the lid is closed.

  Further, the reverse taper portion 105 and the outer taper portion 106 are configured over the entire circumference of the container main body 10, and therefore, these are combined to form an annular shape that bulges toward the inside of the container main body 10. The annular raised portion functions so as to regulate from above the lid that is internally fitted when the lid is closed.

  The inner flange portion 104 has an inner peripheral edge 104a (in this embodiment, an upper end edge of the inner tapered portion 103), as shown in FIG. 3B, a virtual extension line 106 ′ (see FIG. 3) of the outer tapered portion 106. It is comprised so that it may be located in the downward side (namely, container outer side) rather than the inside (shown with a broken line).

  Further, the inner flange portion 104 according to the present embodiment is formed so as to be narrower than a lid inner flange portion 203 of the lid body 20 to be described later, that is, the length of a horizontal plane extending outward from the container is shortened. Yes. As a result, when the lid is closed, the lid body 20 is mounted with the lid inner flange portion 203 slightly protruding toward the inside of the container rather than the inner flange portion 104.

Further, the outer flange portion 107 according to the present embodiment has a horizontal plane extending substantially horizontally, and is formed over the entire circumference of the container body 10.
The outer flange portion 107 is formed with reinforcing ribs 107 a that protrude upward from the horizontal plane of the outer flange portion 107 along the outer peripheral edge of the outer flange portion 107.

Further, the outer flange portion 107 according to the present embodiment is provided with a hanging portion 108 extending downward from the outer edge of the outer flange portion 107 (more specifically, the outer side of the reinforcing rib 107a). Yes. The hanging portion 108 is formed in an endless annular shape so as to be continuous over the entire outer periphery of the outer flange portion 107.
A large number of irregularities (not shown) are alternately formed in the circumferential direction on the lower end edge of the hanging part 108, so that the lower end edge (edge) of the hanging part 108 is not cut off by mistake. . That is, a safety edge process is performed around the container body 10.

  In other words, the configuration of the container body 10 is inclined with respect to the inner side of the outer flange portion 107 along the inner peripheral edge of the outer flange portion 107. An outer tapered portion 106 is formed, and a reverse tapered portion 105 that expands the inner space downward is formed at the lower end of the outer tapered portion 106, and the lower end of the reverse tapered portion 105 is substantially inward toward the inner side. An inner flange portion 104 extending horizontally is formed, an inner taper portion 103 that is inclined downward toward the inside of the container is formed on the inner peripheral edge of the inner flange portion 104, and further, at the lower end of the inner taper portion 103, The peripheral wall 102 is continuous.

  On the other hand, the lid 20 of the present embodiment includes a lid main body 201 facing the bottom 101, a lid peripheral wall 202 extending downward from the periphery of the lid main body 201, and outward from the lower end of the lid peripheral wall 202. A lid inner flange portion 203 extending substantially horizontally toward the lid, an engagement portion 204 extending upward slightly from the outer peripheral edge of the lid inner flange portion 203, and extending outward from the upper end of the engagement portion 204. The lid outer flange portion 205 is provided.

The lid body 201 is formed in a substantially rectangular shape corresponding to the shape of the container body 10, and the lid peripheral wall 202 extending downward from the periphery of the lid body 201 is accompanied by a rectangular tube. It is formed in a shape.
Further, on the upper surface of the lid main body 201, a pair of convex portions 201a and 201a are formed at both ends in the longitudinal direction of the container so as to protrude in an arc shape. When the packaging containers 1 are stacked and displayed, The packaging container placed on the lid body 201 can be prevented from being displaced.

The lid inner flange portion 203, the engaging portion 204, and the lid outer flange portion 205 according to the present embodiment are formed over the entire circumference of the lid body 20, similarly to the lid peripheral wall 202.
As described above, the annular groove formed by the inner flange portion 104 and the reverse taper portion 105 of the container main body 10 functions as a concave portion into which the lid body 20 is fitted inside when the lid is closed. The lid inner flange portion 203 and the engaging portion 204 of the lid body 20 function as convex portions that are inserted into the concave portions.
Therefore, when the lid is closed, the lower end of the engaging portion 204 of the lid body 20 gets over the upper end of the reverse tapered portion 105 of the container body 10, and the convex portion is inserted into the concave portion. After that, the engagement portion 204 is engaged with the reverse taper portion 105 so that the upward movement of the lid body 20 is restricted, and the urging force of the reverse taper portion 105 against the engagement portion 204 is resisted. Only when the lid 20 is pulled up, the lid 20 can be removed.

  Further, the lid inner flange portion 203 and the lid outer flange portion 205 of the lid body 20 are formed to have a horizontal plane extending substantially horizontally. When the lid is closed, the inner flange portion 104 and the outer flange portion of the container body 10 are respectively formed. It is comprised so that it can contact | abut with either the part 107 or any one. Further, the lid inner flange portion 203 and the lid outer flange portion 205 are formed so as to be substantially perpendicular to the lid peripheral wall 202 and the engaging portion 204, and the strength of the lid body 20 is enhanced. In particular, in this embodiment, since the flange portion is continuously formed on the inner side (lower end) and the outer side (upper end) of the engagement portion 204 so as to sandwich the engagement portion 204, the engagement portion 204 is formed. The deformation of the lid in the vicinity of is suppressed, and the lid is prevented from being accidentally dropped off.

  Further, the engaging portion 204 according to the present embodiment is inclined at a substantially equal inclination angle as that of the reverse tapered portion 105, that is, at a predetermined angle (for example, 80 to 85 °) upward from the horizontal plane, and the lid inner flange portion It extends upward from the outer peripheral edge of 203.

  Further, a large number of irregularities (not shown) are alternately formed in the outer peripheral edge of the lid outer flange portion 205 in the circumferential direction so that the hand is not cut accidentally at the outer peripheral edge (edge) of the lid outer flange portion 205. It has become. That is, safety edge processing is also performed around the lid 20. The unevenness is formed when the synthetic resin sheet is molded.

  Although not specifically mentioned, the container body 10 and the lid body 20 according to the present embodiment are formed by a thermoforming method. Therefore, the boundary portions of the above-described parts are continuous and necessary. It is formed in a mode of being curved (rounded) with a radius of curvature corresponding to.

  As described above, according to the packaging container 1 according to the present embodiment, the outer tapered portion 106 that is inclined downward toward the inside of the container is formed along the inner peripheral edge of the outer flange portion 107 that defines the opening of the container body 10. Therefore, the contents adhering to the vicinity of the outer flange portion 107 easily fall into the container along the inclined surface of the outer tapered portion 106.

In addition, according to the packaging container 1 having the outer tapered portion 106 between the outer flange portion 107 and the reverse tapered portion 105, the outer flange portion is simply narrowed so that the reverse tapered portion is directly provided inside. By providing, compared with the case where biting as described above is prevented, not only biting prevention but also a strength enhancement effect is exhibited.
Furthermore, according to the packaging container 1 of the present embodiment, the outer tapered portion 106 that is continuous from the upper end of the reverse tapered portion 105 is formed, and the outer flange portion 107 that is continuous from the upper end of the outer tapered portion 106 is further formed. As a result, two ridge lines that define the boundary with the outer taper portion 106 are formed between the reverse taper portion 105 and the outer flange portion 107, so that the opening of the container body 10 is excellent. It will have strength.

  Since the inner peripheral edge of the inner flange portion 104 is positioned below the virtual extension line 106 ′ of the outer tapered portion 106 (that is, on the outer side of the container), as described above. Thus, the contents that have fallen from the inclined surface of the outer tapered portion 106 to the inside of the container are prevented from dropping on the inner flange portion 104 and stopping, and as a result, biting of the contents is prevented. It will be. That is, according to the packaging container 1 having such a configuration, by providing the inner flange portion 104, the strength of the container body 10 is increased, and at the same time, the lid 20 can be securely fitted and locked. Moreover, the outstanding effect that the biting of the accommodation thing between the cover body 20 and the container main body 10 can be prevented is also exhibited.

  From such a viewpoint, as a more preferable configuration, a configuration in which the inner peripheral edge 104a of the inner flange portion 104 is positioned outward of the container from the lower end 106a of the outer tapered portion 106 can be adopted. By adopting this configuration, the entire inner flange portion 104 is hidden under the outer taper portion 106, so that the effect of preventing the attachment of the contents more reliably is exhibited.

  Further, according to the packaging container 1 having the above configuration, since the outer tapered portion 106 is formed so as to be continuous from the upper end of the reverse tapered portion 105, when trying to fit the lid 20 inside, The outer taper portion 106 has an action of guiding the tip of the engaging portion 204 of the lid body 20 to the inside of the container to be fitted, and the effect of facilitating the lid closing operation of the lid body 20 is also exhibited.

  Furthermore, the packaging container 1 according to this embodiment includes not only the outer taper portion 106 but also the inner taper portion 103 formed so as to be continuous from the inner side of the inner flange portion 104, so that the peripheral wall 102 is moved upward. Compared with the case where the inner flange portion 104 is directly extended to extend to the inner flange portion 104, the fitting of the so-called container main body 10 extending from the inner flange portion 104 to the outer flange portion 107 is achieved while preventing biting of the contents. The combined structure can be provided on the outer side, and the container body 10 having a wide opening can be configured. In addition, since it is possible to employ the container body 10 having a wide opening, which facilitates the process of charging the stored item, as a result, the effect of preventing the biting of the stored item is exhibited.

  Moreover, according to the packaging container 1 which concerns on this embodiment, the inner side flange part 104 of the container main body 10 is narrower than the lid inner side flange part 203 of the cover body 20, ie, as shown in FIG. In this case, the lid inner flange portion 203 is slightly protruded to the inner side of the container than the inner flange portion 104. Even if it is a case, when closing the cover body 20, there exists an effect that this cover inner flange part 203 is easy to drop this accommodation.

  Further, in the packaging container 1 according to the present embodiment, the reinforcing rib 101 a that is annularly raised from the bottom portion 101, the chevron-shaped rib 102 a that is formed in the peripheral wall 202 and extends in the vertical direction, and the outer peripheral edge of the outer flange portion 107. Since the reinforcing rib 107a that is raised and the drooping portion 108 that extends downward from the outer edge of the outer flange portion 107 are provided, the strength of the container body 1 is increased.

  In addition, the packaging container which concerns on this invention is not limited to the said embodiment, Of course, a various change can be added in the range which does not deviate from the summary of this invention.

  Moreover, in the said embodiment, it is set as the structure which forms the lid | cover inner flange part 203 and the lid | cover outer flange part 205 also in the cover body 20, and makes these contact | abut to the inner flange part 104 and the outer flange part of the container main body 10, thereby. Although the configuration is such that the sealed state of the container is enhanced, the present invention is not limited to this, and various configurations can be adopted as long as the lid is fitted into the container body.

  Further, in the above embodiment, the ribs are formed on the bottom portion 101, the peripheral wall 102, and the outer flange portion 107, respectively, and an endless annular drooping portion 108 is provided on the outer peripheral edge of the outer flange portion 107 to increase the strength. However, the present invention is not limited to this, and it is possible to provide ribs having other different configurations and hanging portions having other different configurations, and conversely, these ribs and hanging portions are not provided. It is also possible to configure.

  Moreover, although the said embodiment demonstrated the case where the horizontal cross section of a container was rectangular shape, this invention is not limited at all about the horizontal cross section shape of a container, Arbitrary shapes can be employ | adopted, for example, polygon A shape, an ellipse, or a circle can be adopted.

It is the perspective view which showed one Embodiment of the packaging container which concerns on this invention, and the figure which showed the state which removed the cover body from the container main body. Sectional drawing which showed the II sectional view of FIG. FIG. 3 is an enlarged view of the container mouth portion of FIG. 2, (a) is a cross-sectional view showing an enlarged portion A of FIG. 2, and (b) is a cross-sectional view showing an enlarged portion B of FIG. 2. Figure. The figure which showed the state which attached the cover body to the container main body in the packaging container of FIG. The fragmentary sectional view which showed the conventional packaging container.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Packaging container, 10 ... Container body, 20 ... Lid, 101 ... Bottom, 102 ... Perimeter wall, 103 ... Inner taper part, 104 ... Inner flange part, 105 ... Reverse taper part, 106 ... Outer taper part, 107 ... Outer Flange portion, 108 ... hanging portion, 201 ... lid body, 202 ... lid peripheral wall, 203 ... lid inner flange portion, 204 ... engagement portion, 205 ... lid outer flange portion

Claims (3)

In a packaging container having a bottom, a container body having an opening upward with a peripheral wall standing up from the outer periphery of the bottom, and a lid body fitted inside the container body to close the opening,
An outer flange portion extending outward from the opening edge is formed on the container body, and an outer tapered portion that is inclined toward the inner side of the container is continuous with the outer flange portion on the inner side of the outer flange portion. A reverse taper portion is formed on the inner side of the outer taper portion so that the lid is fitted inside the outer taper portion. The inner taper portion further extends inward from the lower end of the reverse taper portion. An inner taper that is formed and is configured such that an inner edge of the inner flange portion is positioned below a virtual extension line of the outer taper portion, and an inner taper that is inclined toward the inner side of the container inside the inner flange portion. The packaging container is characterized in that a portion is formed continuously from the inner flange portion, and the inner taper portion is connected to the upper portion of the peripheral wall that stands up from the outer periphery of the bottom portion . Wherein the inclination angle of the inner tapered portion, wherein as compared with the inclination angle of the outer tapered portion, the packaging container according to claim 1, wherein it is configured as close more vertically. Wherein the outer side of the outer flange portion, the packaging container according to claim 1 or 2, characterized in that depending portion that extends is provided downward.

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