JP4435776B2 - Packaging container - Google Patents

Description

  The present invention relates to a packaging container that includes a container body and a lid that is openable and closable at an opening thereof.

A packaging container for storing foods such as fried noodles is composed of a container body and a lid that is openable and closable at an opening thereof (see, for example, Patent Document 1).
JP-A-10-250753

  However, for example, when selling food after cooking in a container at a stand, etc., when the buyer opens the lid and eats the food, the heat of the food is transmitted to the hand through the container body, so the container must be held well I can't. Even if you try to stack the lid under the container body, the shapes do not match and you cannot stack. A flat lid can be placed under the container body, but since the container body and the lid are in contact with each other, the heat of the food is easily transmitted to the hand. In addition, the container body tends to slip off from the lid.

  Therefore, an object of the present invention is to provide a packaging container that can stably put a lid under a container main body and hardly transmit food heat.

  In order to achieve the above object, the present invention is a packaging container made of a synthetic resin comprising a container body and a lid, the container body being formed along a housing recess and a periphery of the opening. The lid includes a bulging portion that is bulged in a mountain shape, and a fitting rib that is formed along the peripheral edge of the opening and is fitted to the peripheral rib. A protruding portion that protrudes inward is formed on a part of the protruding portion, and the recessed portion can be accommodated in the bulging portion and the lower end of the peripheral rib is the protruding portion in the inverted lid posture in which the lid is stacked under the container body. The packaging container is characterized in that a gap serving as a heat insulating layer is formed between the bottom surface of the housing recess and the top surface of the bulging portion.

  According to the above configuration, since the housing recess of the container main body can be accommodated in the bulging portion of the lid, the lid can be reversed and stacked under the container main body (reverse lid posture). Therefore, since the container body and the lid are doubled, it is difficult for the heat from the contents in the container body to be transmitted to the outside. Further, in this inverted lid posture, the lower end of the peripheral rib of the container body comes into contact with the protrusion of the fitting rib of the lid, so that the container body floats in the bulging portion. A gap can be formed between the bottom surface of the lid and the top surface of the bulging portion of the lid. Since this gap | interval works as a heat insulation layer, the heat from a stored thing can be interrupted | blocked further. Furthermore, since the housing recess is housed in the bulging portion, the container body is less likely to slip off from the lid, and the stability of the container body during the inverted lid posture can be improved.

  Although the thickness of the resin sheet which comprises such a packaging container is not limited, It is suitable especially when formed from a thin resin sheet. For example, when the thickness of the resin sheet is as thin as 0.18 to 0.5 mm, the heat of the contained material is easily transmitted to the hand through the container body, but the problem can be solved by adopting the above configuration. Can do.

  The protrusion can be locked to the lower surface of the peripheral rib when the container body opening is covered with the lid. Since the protrusion can be used together with the locking in the closed lid posture and the support surface of the container body in the inverted lid posture, the structure of the packaging container can be simplified.

  The bottom surface of the housing recess of the container body can be formed in a corrugated cross section. By setting it as a cross-sectional wave shape, the clearance gap between an accommodation recessed part bottom face and the top | upper surface of a lid | cover can be enlarged more, and the interruption | blocking effect of heat can be heightened.

  At the time of the inverted lid posture, at least the upper part of the side wall of the housing recess can be formed along the inner surface of the side wall of the bulging part. According to this configuration, even if the container main body is shifted in the horizontal direction with respect to the lid, the side wall of the housing recess and the side wall of the bulging portion come into contact with each other, thereby preventing the horizontal displacement between the lid and the container main body. be able to. In addition, it is preferable to provide a gap of about 0.5 to 5 mm as a heat insulating layer between the side wall of the housing recess and the side wall of the bulging portion.

  The peripheral rib flange can be extended so as to extend laterally from the end of the peripheral rib, and the upper surface of the peripheral rib flange can be locked to the protrusion of the fitting rib in the inverted lid posture. The lid and the container body can be fixed, and the container body can be more effectively prevented from slipping off from the lid by mistake.

  As is apparent from the above description, this packaging container has a lid placed under the container body, and a gap as a heat insulating layer is provided between the bottom surface of the container main body and the lid, so that the contents in the container body can be removed. It is possible to make it difficult to transmit the heat of the outside.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a plan view of the packaging container of the present embodiment, FIG. 2 is a plan view of the container body of the present embodiment, FIG. 3 is a front view of the packaging container of the present embodiment when the lid is closed, and FIG. FIG. 5 is a partially enlarged view of FIG. 4, FIG. 6 is a front view of the packaging container according to the present embodiment in an inverted lid posture, FIG. 7 is a central sectional view of FIG. 7 is a partially enlarged view of FIG. 7, FIG. 9 is a central sectional view showing a state in which the peripheral rib flange is locked to the protrusion of the fitting rib in the inverted lid posture, and FIG. 10 is a partially enlarged view of FIG. .

  As shown in FIGS. 1 to 3, the packaging container is composed of a bowl-shaped container body 1 having an upper surface opening and a lid 2 that can be fitted to the upper surface opening, each of which is a transparent and thin resin sheet. Are integrally formed by vacuum forming. As the resin sheet, a polypropylene sheet and an OPS sheet (registered trademark, biaxially stretched polystyrene sheet) are used, but other resins such as polyethylene, polypropylene, and PET may be adopted. The thickness of the resin sheet is 0.18 to 0.5 mm, but is not limited thereto. By being formed from a thin resin sheet, the lid 2 and the container body 1 can be elastic enough to be fitted in the closed and inverted lid positions. The resin sheet is not limited to a transparent sheet. Further, the molding method is not limited to vacuum molding, and molding may be performed by other methods such as an injection molding method and a pressure molding method.

  The container main body 1 includes an accommodation recess 3 that accommodates an article and a peripheral rib 4 that is formed along the periphery of the opening, and these are integrally formed using a polypropylene sheet having a thickness of 0.35 mm. The peripheral rib 4 is formed so as to be bent upward and a peripheral rib flange 5 is extended so as to expand from the end to the outer side in a substantially horizontal direction. The distance H1 between the height of the peripheral rib flange 5 and the height of the bottom surface 3a of the housing recess 3 is approximately 16 mm, but is not limited thereto.

  The side wall 3b and the bottom surface 3a of the housing recess 3 are formed in a corrugated cross section. With this configuration, a gap can be formed between the container body 1 and the lid 2 in the inverted lid posture in which the lid 2 is stacked under the container body 1. Further, as shown in FIGS. 7 and 8, the upper portion 3c of the side wall 3b of the housing recess 3 is substantially along the inner surface of the side wall 6a of the bulging portion 6 to be described later with an interval of several millimeters in the inverted lid posture. Formed as follows. According to this configuration, even if a force for horizontally shifting the container main body 1 acts on the lid 2, the upper portion 3c of the side wall 3b of the housing recess 3 and the side wall 6a of the bulging portion 6 come into contact with each other. And the horizontal displacement of the container body 1 can be prevented. Further, the lower part 3 d of the side wall 3 b of the container body 1 is inclined in a direction away from the side wall 6 a of the bulging portion 6. With this configuration, in the lower part of the container body 1, the gap with the lid 2 can be increased, and the heat blocking effect can be enhanced.

  The lid 2 includes a bulging portion 6 that is bulged in a mountain shape, and a fitting rib 7 that is bent upward along the peripheral edge of the opening and is fitted to the peripheral rib 4. These are integrally formed using an OPS sheet having a thickness of 0.25 mm.

  The bulging portion 6 has a shape capable of accommodating the accommodating concave portion 3 of the container body 1 in the depth and the width when the inverted lid posture is employed.

  In addition, the outer peripheral wall 7a of the fitting rib 7 of the lid 2 has a plurality of protrusions 8 projecting inward to lock the peripheral rib flange 5 of the container body 1 at a plurality of positions at a closed position. It is formed. Each of the protrusions 8 is formed at the center of the four side surfaces of the lid 2, and is formed at a total of eight locations on the four rectangular surfaces. In addition, the formation position and the number of the protrusions 8 are not limited to the above.

  The protrusion 8 drops inward to form a stepped surface 8a, and then inclines outward to form an inclined surface 8b. In the closed posture, the lower end of the peripheral rib 4, that is, the lower surface of the peripheral rib flange 5 is locked by the step surface 8 a.

  Further, the protrusion 8 can support the lower end of the peripheral rib 4, that is, the peripheral rib flange 5 on the inclined surface 8 b in the inverted lid posture. At this time, the distance H2 between the height of the stepped surface 8a of the protrusion 8 and the height of the top surface 6b of the bulging portion 6 is set to approximately 17 mm, which is set larger than the distance of the H1, so A gap (heat insulating layer W) can be formed between the bottom surface 3a of the housing recess 3 and the top surface 6b of the lid 2 during the lid posture.

  Furthermore, as shown in FIGS. 9 and 10, the protrusion 8 can lock the upper surface of the peripheral rib flange 5 with the step surface 8a in the inverted lid posture. The container body 1 can be fixed to the lid 2. In order to secure a larger heat insulating layer W during locking, the distance H3 may be set larger.

  When the packaging container having the above configuration is in the closed position, the peripheral rib 4 of the container body 1 is elastically fitted into the recess of the fitting rib 7 of the lid 2 as shown in FIGS. By locking the flange 5 to the protrusion 8, the lid 2 and the container body 1 are fixed. Since the step surface 8a of the protrusion 8 formed on the fitting rib 7 of the lid 2 is disposed below the peripheral rib flange 5 of the container body 1, the lid 2 is substantially free from movement in the vertical direction. It is locked to. Therefore, the lid 2 is not opened unless the locked state of the protrusion 8 is released.

  7 and 8, the peripheral rib flange 5 of the container body 1 contacts the stepped surface 8b of the protrusion 8 of the lid 2, so that the container body 1 does not move further downward. Then, it floats in the housing recess 3. Therefore, a gap is formed between the bottom surface 3 a of the housing recess 3 of the container body 1 and the top surface 6 b of the lid 2. This gap can serve as the heat insulating layer W.

  Further, in the inverted lid posture, as shown in FIGS. 9 and 10, the peripheral rib 4 of the container body 1 is elastically fitted to the inner surface of the concave portion of the fitting rib 7 of the lid 2, and the peripheral rib flange 5 is The protrusion 8 can be locked. Since the peripheral rib flange 5 of the container body 1 is disposed below the stepped surface 8a of the protrusion 8, the container body 1 is substantially locked to the lid 2 with respect to the vertical movement. Thus, since the container main body 1 is fixed to the lid | cover 2, it can prevent that the container main body 1 slips down. Moreover, even if it fits in in this way, since the bottom face 3a of the accommodation recessed part 3 is formed in the wave shape, the clearance gap as a heat insulation layer between the bottom face 3a of the accommodation recessed part 3 and the top | upper surface 6b is securable.

Top view of packaging container of this embodiment Plan view of the container body of the present embodiment Front view of the packaging container of this embodiment when the lid is closed AA sectional view of FIG. Partial enlarged view of FIG. Front view of the packaging container of the present embodiment at the time of the inverted lid posture Center sectional view of FIG. Partial enlarged view of FIG. Central sectional view showing a state in which the peripheral rib flange is locked to the protrusion of the fitting rib in the inverted lid posture Partial enlarged view of FIG.

Explanation of symbols

W heat insulation layer 1 container main body 2 lid 3 receiving recess 3a bottom surface 3b of receiving recess 4 side wall 4 of receiving recess 4 peripheral rib 5 peripheral rib flange 6 bulging portion 6a bulging portion side wall 6b bulging portion top surface 7 fitting rib 7a Outer peripheral wall 8 of fitting rib Projection 8a Step surface 8b Inclined surface

Claims (5)

A packaging container made of a synthetic resin comprising a container body and a lid, wherein the container body is composed of a housing recess for housing the contents and a peripheral rib formed along the periphery of the opening, A bulging portion that bulges in a mountain shape, and a fitting rib that is formed along the peripheral edge of the opening and that fits into the peripheral rib. A protruding part is formed on the
In the inverted lid posture in which the lid is stacked under the container body, the accommodating recess can be accommodated in the bulging portion, and the lower end of the peripheral rib abuts on the protrusion, and the bottom surface of the accommodating recess A packaging container, wherein a gap serving as a heat insulating layer is formed between the top surface of the bulging portion. The packaging container according to claim 1, wherein the protrusion is engaged with a lower surface of the peripheral rib when the lid is closed. The packaging container according to claim 1, wherein a bottom surface of the housing recess is formed in a corrugated cross section. At the time of the inverted lid posture, at least the upper part of the side wall of the housing recess is formed so as to be along the inner surface of the side wall of the bulging portion, thereby preventing the lid and the container body from being displaced in the horizontal direction. The packaging container according to any one of claims 1 to 3. A peripheral rib flange extends so as to extend laterally from an end of the peripheral rib, and the upper surface of the peripheral rib flange can be locked to the protrusion of the fitting rib in a reverse cover posture. The packaging container according to any one of claims 1 to 4.

Images