JP6147291B2 - Food packaging container - Google Patents

Description

The present invention relates to a food packaging container. More particularly, the present invention relates to a technique for preventing leakage of a packaging container in which food or the like is stored.

  Conventionally, a lid made of a synthetic resin sheet and a container body have been fitted as containers used when selling foodstuffs and processed foods in stores such as supermarkets, convenience stores, department stores, and lunch boxes. A structured packaging container is used.

  Inside the packaging container, foods such as boiled foods and fried foods may be stored while they are warm. When the water vapor generated from such food is condensed on the inner surface of the lid and becomes water droplets, when hands are wet with water leaking from the edge of the container when it is lifted at the storefront, or when the consumer purchases food There is a problem of contaminating other purchased items with the leaked water.

Under such circumstances, there has been proposed a technique for preventing leakage of water contained in food contained in a food packaging container.
For example, Patent Literature 1 and Patent Literature 2 disclose food packaging containers in which a main body flange portion and a lid flange portion are separated so as not to cause capillary action over the entire area.

JP2011-1179A JP2014-201313

However, as shown in Patent Document 1 and Patent Document 2 described above, there is a technique in which an attempt is made to prevent leakage of water contained in food contained in the container, but it is still insufficient. There are many techniques. Therefore, in conventional food packaging containers, water vapor generated from food condenses on the top surface of the lid to form water droplets that leak along the side walls of the lid to the edge of the container and lift the container. There is a problem that hands get wet.

The present invention has been made to solve the above-described conventional problems, and by guiding water droplets traveling along the side wall of the lid body to the inside of the container body, the water droplets are flanged of the lid body and the flange of the container body. It is an object to prevent entry into the space and leakage out of the container due to capillary action.

Food packaging container according to the present invention, Ri Na and a lid for closing the container body and the upper opening of the container body for containing the contents, closing the lid, the bottom portion of the container body The container main body is composed of a bottom surface portion that extends in the center, a main body side wall portion that extends upward from the peripheral edge of the bottom surface portion, and a main body flange portion that continues from the upper end of the main body side wall portion in the outer peripheral direction. Is done. The main body flange portion includes a main body flange top wall, a main body flange inner peripheral wall depending from the inner peripheral edge of the main body flange top wall, a main body flange outer peripheral wall extending downward from the outer peripheral edge of the main body flange top wall, The main body flange is configured from a main body flange extending horizontally outward from the lower end of the outer peripheral wall of the main body flange.
The lid body includes a top surface portion that extends in the center, a lid side wall portion that extends downward from the periphery of the top surface portion, and a lid flange portion that continues outward from the lower end of the lid side wall portion. The lid flange portion extends inward from the lid flange top wall, the lid flange inner wall hanging from the inner periphery of the lid flange top wall, and the lower end of the lid flange inner wall. A lid flange low wall continuous to the lower end of the lid side wall portion, a lid flange outer peripheral wall extending downward from the outer peripheral edge of the lid flange top surface wall, and further horizontally outward from the lower end of the lid flange outer peripheral wall And a lid that extends into

The main body flange portion is provided with a plurality of main body flange top portions, and the main body flange top portions are inclined or curved so as to be lower than the main body flange top portion.
The lid flange portion is provided with a plurality of lid flange top portions corresponding to the main body flange portion, and the lid flange top portions are inclined or curved so as to be lower than the lid flange top portion. And the dew condensation water descending from the top surface portion to the lower end of the lid side wall portion through the lid side wall portion, along the lid flange low wall portion inclined or curved by gravity, is the lowest part of the lid flange low wall. Descend to

An inward rib extending in the bottom direction is formed on the container body with the lowermost position of the inclined or curved body flange top wall as the upper end. When the lid is fitted to the container main body, at least the main body flange inner peripheral wall and the lid flange inner peripheral wall are separated from each other, and the lid flange inner peripheral wall is the lowermost wall of the lid flange low wall. In contact with the upper end of the inward rib formed on the side wall of the main body. Therefore, the dew condensation water descending from the top surface portion of the lid body to the lowermost portion of the lid flange low wall through the lid body side wall portion is guided to the upper end portion of the inward rib formed on the main body side wall portion and inward It goes down to the bottom of the container body along the rib.

If the food packaging container of the present invention is used, the condensed water condensed on the top surface of the lid is guided to the lowest part of the lower wall of the lid flange, and the condensed water is interposed between the main body flange and the lid flange. Without intruding into the bottom wall by the inward ribs provided on the side wall of the main body, it is possible to realize a food packaging container that hardly leaks from the inside of the container.

It is a perspective view which shows embodiment of the container for food packaging which concerns on this invention. It is a top view which shows embodiment of the container for food packaging which concerns on this invention. It is the top view which closed the cover and the main body which show embodiment of the container for food packaging concerning this invention. It is AA sectional drawing of FIG. It is sectional drawing which shows the principal part of the container for food packaging in this embodiment, (A) is the state before fitting a cover body to a container main body, (B) fitted the cover body to the container main body. State.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. In addition, this invention is not limited to embodiment shown below.

The food packaging container of the present embodiment is composed of a container body and a lid body, which are thermoformed from a synthetic resin sheet by vacuum forming, pressure forming, vacuum pressure forming, hot plate forming or the like. As this synthetic resin sheet, it is preferable to use, for example, a polyester resin such as polyethylene terephthalate, a styrene resin such as polystyrene, a single layer sheet made of an olefin resin such as polypropylene, or a multilayer sheet obtained by laminating these resins. . In addition, a laminated sheet obtained by laminating a synthetic resin film on the surface of the synthetic resin sheet may be used, and various types of printing may be performed on the surface of the synthetic resin film or synthetic resin sheet to be laminated.

As shown in FIGS. 1 to 3, the food packaging container according to the present embodiment is a container having a rectangular shape in plan view, and a container body 1 for containing contents and an opening of the container body 1. The container body 1 and the lid body 2 are integrally formed through the hinge portion 3. The food packaging container is used in a state where the food is stored in the container main body 1 and displayed at the storefront with the lid 2 closed as shown in FIGS. 3 and 4. In addition, although the contents which generate | occur | produce vapor | steam (steam), such as food after cooking, for example can be used suitably as containment, it is not necessary to limit to this.

As shown in FIGS. 4 and 5, the food packaging container according to the present embodiment includes a bottom part 14 that extends in the center, a main body side wall part 13 that extends upward from the periphery of the bottom part 14, and The main body side wall 13 is composed of a main body flange portion 11 that continues from the upper end in the outer peripheral direction. The main body flange portion 11 includes a main body flange top wall 11a, a main body flange inner wall 11b depending from the inner periphery of the main body flange top wall 11a, and a main body flange extending downward from the outer periphery of the main body flange top wall 11a. The outer peripheral wall 11c and the main body flange 11d extending horizontally further outward from the lower end of the main body flange outer peripheral wall 11c.
The lid body 2 includes a top surface portion 24 extending in the center, a lid side wall portion 23 that extends downward from the periphery of the top surface portion 24, and a lid flange portion 21 that continues from the lower end of the lid side wall portion 23 in the outer circumferential direction. It consists of. The lid flange portion 21 includes a lid flange top wall 21a, a lid flange inner peripheral wall 21b depending from the inner periphery of the lid flange top wall 21a, and an inner end from the lower end of the lid flange inner wall 21b. A lid flange low wall 21e extending in the direction and continuing to the lower end of the lid side wall 23, a lid flange outer peripheral wall 21c extending downward from the outer peripheral edge of the lid flange top surface wall 21a, and an outer periphery of the lid flange The lid 21d extends horizontally outward from the lower end of the wall 21c.

In the present embodiment, the main body flange portion 11 of the container main body 1 is provided with a plurality of main body flange top portions 11t, and the space between the main body flange top portions 11t is curved and formed lower than the main body flange top portion 11t. The lid flange portion 21 of the lid body 2 is provided with a plurality of lid flange top portions 21t corresponding to the main body flange portion 11, and the lid flange top portions 21t are curved so as to be curved. It is formed lower.
The main body side wall portion 13 is formed with inward ribs 12 having the upper end of the main body flange top wall 11u as the upper end and extending in the bottom direction. When the lid body 2 is fitted to the container body 1, at least the body flange inner peripheral wall 11b and the lid flange inner peripheral wall 21b are separated from each other, and the lid flange inner peripheral wall 21b is the lid flange low wall. It contacts the upper end 12a of the inward rib at the position of the lowermost part 21u.

In this embodiment, when the lid body 2 is fitted to the container body 1, the main body flange portion 11 and the lid flange portion 21 form a gap also in the top wall portion, but at least the inner peripheral wall of the main body flange 11b and the cover flange inner peripheral wall 21b need to be separated from each other. If the main body flange portion 11 and the lid flange portion 21 are in contact with each other, water droplets may enter between the main body flange portion 11 and the lid flange portion 21 due to capillary action, and water may leak out of the container.

  In the present embodiment, a step portion is formed on the upper portion of the main body side wall portion 13. Even if the step portion is not provided, the water droplet induction effect is not affected. However, the step portion is preferably provided because the strength of the container body 1 is increased by providing the step portion.

If the food packaging container of the present invention is used, water vapor generated from the food contained in the container is condensed on the top surface portion 24 of the lid body 2 to form water droplets, and travels along the lid side wall portion 23 to form the lid flange. It descends to the low wall 21e. This water droplet naturally descends along the lid flange low wall 21e curved by gravity to the lowermost portion 21u of the lid flange low wall.

Further, the water droplet descending to the bottom flange lower wall 21 u of the lid flange is received by the upper end portion 12 a of the inward rib 12 formed on the main body side wall portion 13, and along the inward rib 12, the bottom surface portion of the container main body 1. 14 can be guided to.

Therefore, the water droplets condensed on the top surface portion 24 of the lid body 2 by combining the water droplet guidance function of the lid flange low wall 21e of the lid body 2 and the water droplet guidance function of the inward rib 12 of the main body 1 in this embodiment. Can be guided to the inside of the container main body 1 without entering between the main body flange portion 11 and the lid flange portion 21.

Further, in the food packaging container according to the present embodiment, the height difference between the lid flange top 21t and the lid flange lower wall lowermost portion 21u is not limited, and water drops along the lid flange low wall 21e. Should be able to move to the bottom 21u of the lower wall of the lid flange by gravity. Therefore, according to the capacity of the food to be accommodated, the height difference between the container size and the top of the flange and the bottom of the flange can be determined as appropriate.

In the present embodiment, the main body flange portion 11 and the lid flange portion 21 have a curved shape in which the tops of the flanges are continuous. However, the main body flange portion 11 and the lid flange portion 21 are different from each other in the flange top portion and the flange top portion. Even if it is a V-shaped form in which the space between the lower part and the lower part is inclined linearly, an aspect in which inclination and curvature are combined may be used.

In the present embodiment, the container in the case where the overall shape in plan view is rectangular has been described, but the overall shape of the container is not limited to a rectangle, and may be a polygon or other shapes. Moreover, in this embodiment, although the container main body 1 and the cover body 2 demonstrated the case where it comprised integrally through the hinge part 3, this invention is not limited to such an aspect, The container body 1 and the lid body 2 may be configured as separate bodies.

In the present embodiment, by providing a leg portion 15 that is one step lower than the bottom wall 14a at the peripheral edge portion of the bottom surface portion 14, water drops can be collected in the leg portion. Thus, it is possible to effectively prevent the stored food from being contaminated with water droplets.

Container body 1
Body flange 11
Body flange top 11t
Body flange top wall bottom 11u
Inward rib 12
Upper end 12a of inward rib
Bottom part 14
Leg 15
Lid 2
Lid flange 21
Lid flange inner peripheral wall 21b
Lid flange top 21t
The bottom of the lid flange low wall 21u
Top 24
Hinge part 3

Claims (1)

A container for food packaging comprising a container body and a lid body thermoformed from a synthetic resin sheet, with the lid body closed and with the bottom surface portion of the container body facing down,
The container body is provided with a plurality of main body flange tops on the main body flange, and the lower part of the main body flange top surface wall is positioned at the upper end of the main body side wall in an inclined or curved manner between the tops of the main body flanges. And forming an inward rib extending in the bottom direction,
The lid body has a plurality of lid flange top portions corresponding to the main body flange portion, the lid flange top portions being inclined or curved between the lid flange top portions and formed lower than the lid flange top portion. Forming a lid flange inner peripheral wall that hangs down from the inner peripheral edge of the lid flange top surface in the flange portion, and a lid flange low wall extending inward from the lower end of the lid flange inner peripheral wall;
When the lid is fitted to the container main body, at least the main body flange inner circumferential wall and the lid flange inner circumferential wall are separated, and the lid flange inner circumferential wall is in contact with the upper end portion of the inward rib. A food packaging container characterized by guiding condensed water to the bottom of the container body.

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