JPH0131055Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a heat-retaining lunch box in which a simple thermos is housed inside the lunch box, which is made of an incinerated cardboard lid and a box.

Traditionally, in order to sell warm bento boxes, as many bento boxes as you can carry are taken out of a heating device installed at a designated location and sold on the platform or on the train, but this method does not have any means of keeping warm. Because the heat was lost in a relatively short period of time, the bento became cold and tasteless by the time it was sold to customers. For this reason, some bento boxes are made of resin and have a simple container placed in the bottom, but the synthetic resin that these bento boxes are made from generates high temperatures when incinerated, damaging the incinerator and emitting toxic gas. Because some waste is generated, it cannot be burned together with regular paper waste, and a special incinerator is required, making it time-consuming to dispose of bento waste.

In view of these conventional drawbacks, the present invention has been developed to make the bento box made of paper and provide it with reinforcing uneven parts and ribs to give it strength so that it can be incinerated. Its structure is such that a rectangular top part is provided in the center of the lid body made of cardboard, which has been waterproofed on the entire back surface, and corner parts are formed on three sides of the top part through folds. A lid body in which a rising piece is formed by cutting and separating at an obtuse angle, a chopstick holder is integrally formed through a fold on the other side, and a window is provided in the chopstick holder;
A flat board made of cardboard is attached to the outside of the interior material, which has reinforcing ribs and uneven parts all over.A square bottom part that is one size smaller than the top part is provided in the center of the paperboard, and a fold is made around this bottom part. At the same time, notches are provided at arbitrary intervals at the upper end of each of the upright pieces, and notches are provided along the folds at both ends of one pair of folds. A box body formed by folding the stand-up piece upward, and a thin resin inner container that is integrally formed with multiple side dish compartments and rice compartments and can be incinerated, with the lower end below the bottom of the inner container. It consists of an inner container that forms a raised part and has an empty space below the bottom surface, and a simple heater that generates heat by being oxidized by air is housed in the empty space below the inner container that is housed inside the box. The present invention is characterized in that the folded pieces and the chopstick holder on three sides of the lid which is placed over the top of the box can be brought into close contact with the outside of each rising piece of the box.

Therefore, after eating the bento warm and delicious, the remains of the bento can be incinerated in a normal incinerator along with ordinary paper waste, and even though it is made of paper, the inside of the box By providing an interior material, the strength can be increased.

An embodiment of the present invention will be described based on the attached drawings. As shown in FIGS. 2 and 3, reinforcing ribs 1a are provided in a linear, curved, lattice, or staggered manner throughout the entire body.
Or, as shown in FIGS. 4 and 5, a rectangular bottom part is provided in the center of a paperboard 4 in which a flat board 3 made of cardboard is adhered to the outside of an interior material 2, which is provided with alternately uneven parts 1b by embossing. A rising piece 7 is formed around the bottom part 5 through a fold line 6, and cuts 8 are provided along the fold line at both ends of one pair of fold lines 6. The box body 10 is formed by folding back each of the raised pieces 7 upward and connecting them to each other. Cutouts 11 are provided at the upper end of this rising piece 7 at arbitrary intervals.

15 is a cardboard lid that can be bent or incinerated.
A silver paper 14 or the like is pasted on the entire back side to make it waterproof and prevent it from absorbing moisture from the rice.

The lid body 15 is provided with a rectangular upper part 16 one size larger than the bottom part 5 in the center thereof, and bent pieces 18 are formed on three sides of the upper part through folds 17, and further, Fold 1 on the other side
A cylindrical chopstick insertion part 19 is continuously formed by bending through 7' and gluing the ends. A window 20 is provided in this chopstick holder so that the presence or absence of chopsticks 21 can be checked from the outside.

The corners of each bent piece 18 of the lid body 15 are cut out and separated from each other at an obtuse angle, so that even if the angle of the upright piece 7 of the box body is perpendicular or inclined outward, they can be brought into close contact. The box body 10 and the lid body 15 can be
When tied together with a string, the string will not loosen (Figures 11 and 13).

25 is an inner container made of thin resin that can be incinerated in a normal incinerator, and has a plurality of side dish containers 24 and siew mai and rice containers 27 on the surface, and the bottom surface 2.
6 is located above the lower end of the upright part 29 provided around the inner container, and a known simple cage 30 is accommodated in the empty space 28 provided between the plane connecting the upright part 29 and the bottom surface 26. It has been made possible to do so.

The simple cage 30 is placed on a bottom plate 40 placed on the bottom surface of the box body 15, but the bottom plate 40 may be formed of a corrugated plate having reinforcing ribs all over. Not necessarily necessary.

As the simple thermometer 30, a disposable thermometer manufactured by Mycoal Kairo Co., Ltd. (trade name "Onpack") was used, but other thermometers can also be used. When using a simple heating pad, remove it from a sealed bag (not shown) and shake or knead it with your hands to oxidize it with air and generate heat, but the heating temperature is approximately 20-12℃.
It can keep food hot for about 24 hours.

Next, to explain the operation of this embodiment, side dishes and rice are stored in the inner container 25, a simple hot pot 30 that is oxidized with air to generate heat is stored in the box body 10, and the hot pot is placed on top of the hot pot. Inner container 25 containing food
Place. In this case, the simple cage 30 is positioned in the empty space 28 that exists inside the upright part of the inner container and below the bottom surface 24.

Next, the top of the box body 10 is covered with the lid body 15 and each folded piece 18 is bent downward to fit tightly against the side surface of the box body 10, and the chopstick holder 19, which accommodates the chopsticks 21 inside, is also placed in the vertical position of the box body 10. A cover paper (not shown) is placed over the lid 15 and tied in a cross shape with a string. Since they can be placed close together without any gaps, the strings will not loosen. In addition, since the rising piece 7 is provided with a plurality of notches 11, a simple cutout 3 is provided.
The rice is heated at 0 and can be discharged to the outside through the notch 11 that comes out from the rice. This simple heating method can keep the bento warm for at least several hours.

The interior material 2 has reinforcing ribs 1a or uneven portions 1.
b provides good air circulation, and the high temperature air heated by the simple heater 30 quickly heats up throughout the bottom of the box 10 along the grooves of the ribs or uneven parts. Wander. Moreover, since the air between the interior material 2 and the flat plate 3 has a heat insulating effect, the box body 1
0 Prevents heat from escaping to the outside.

The present invention has the following effects.

Since no external power is required for the heat source, there is no need for wiring equipment, so it can be used anywhere, and since no fire is used, there is no risk of fire.
You can keep your bento warm for at least a few hours and enjoy it while it's still warm.

Since the box body and lid are made of paper, the incinerator will not be damaged even if it is incinerated with ordinary paper waste, and there is no need for special incineration equipment, eliminating unnecessary costs. I can do it.

Even if paper is used as the material, the interior material has reinforcing ribs and uneven parts throughout, so it has sufficient strength.

A notch is provided in the upright piece around the lid, which allows some of the steam released from the rice to be discharged to the outside when heated, preventing the rice from becoming unpalatable due to excess moisture. It can be prevented.

Since air can also be taken in through the notch provided in the upright piece of the box, the simple heater can be sufficiently oxidized with air and heated.

Since the corners of the bent pieces provided around the lid are separated from each other, each rising piece can be brought into close contact with the box body whether the rising piece is vertical or inclined. The string never loosens.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention: Fig. 1 is a plan view of the unfolded box, Fig. 2 is a sectional view of the main part of the paperboard, Fig. 3 is the same plan view, and Fig. 4 is a plan view of the expanded box. A sectional view of the main parts of the paperboard, Fig. 5 is a plan view of the same, Fig. 6 is a front view of the box, Fig. 7 is a plan view of the unfolded lid, and Fig. 8 is a partially broken view of the assembled lid. Figure 9 is a partially broken front view of the box with the lid on.
Figure 10 is a front view showing the chopstick holder, and Figure 11 is the 1st view.
Figure 0 is an enlarged sectional view in the direction of the A-A line, Figure 12 is a partially cutaway front view of the case installed in a box with another shape, Figure 13 is an enlarged sectional view of the center, and Figure 14 is the inner container. FIG. 2... Interior material, 4... Paperboard, 5... Bottom, 7...
... Standing piece, 10 ... Box body, 11 ... Notch, 15
... Lid body, 20 ... Chopstick holder, 27 ... Inner container, 2
8...vacant room, 30...simple room.

Claims (1)

[Scope of claim for utility model registration] Cover 15 made of cardboard with waterproof treatment applied to the entire back surface
A rectangular upper surface portion 16 is provided at the center of the upper surface portion, and the corners are cut out at obtuse angles on three sides of the upper surface portion through folds 17 to form raised pieces 18.
The chopstick insertion part 19 is inserted through the fold 17' on the other side.
A central part of a paperboard 4 has a flat plate 3 made of cardboard attached to the outside of an interior material 2 which has reinforcing ribs and uneven parts all over the lid body 15 which is integrally formed with a window part 20 in the chopstick holder part. A rectangular bottom part 5 that is one size smaller than the upper surface part is provided, and raised pieces 7 are formed around this bottom part through folds 6, and notches are formed at arbitrary intervals at the upper end of each raised piece. A box body 10 formed by folding each rising piece 7 upward, with cuts 8 provided at both ends of one pair of folds along the folds, and a plurality of side dish compartments 24. A raised part 29 whose lower end is located below the bottom surface 26 of the inner container 25 is formed around the inner container 25 made of a thin resin that can be incinerated by integrally forming the rice container 27 to form an air space below the bottom surface. It consists of an inner container 25 provided with a chamber 28, and a simple heater that generates heat by being oxidized by air is housed in the empty chamber 28 below the inner container 25 housed in the box body 10, and the upper surface of the box body 10 This heat-retaining lunch box allows bending pieces 18 existing on three sides of the periphery of a lid 15 and a chopstick holder 19 to be brought into close contact with the outside of each rising piece 7 of the box body.