JP2007099297A - Paper box for food - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper box for food which can be heated in a microwave oven while containing a refrigerated food therein, and prevents water from the refrigerated food from leaking outside. <P>SOLUTION: A blank sheet 10 comprises: a bottom part 11; side parts 12 and 13 continuously provided to both long sides of the bottom part 11; a top part 14 continuously provided to the long sides of the side part 13 on the side separate from the bottom part 11; bottom flaps 15L and 15R continuously provided to both short sides of the bottom part 11; side flaps 16L, 16R, 17L and 17R continuously provided to both short sides of the side parts 12 and 13; and top flaps 18L and 18R continuously provided to both short ridges of the top part 14. A paper box 1 for food is formed by erecting and pasting the blank sheet 10. A web 30 which covers a space between both flaps while an edge thereof is separate from the bottom part 11 by a predetermined distance is formed between the bottom flaps and the side flaps. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a food paper box, and more particularly, to a food paper box of a type in which contents can be heated as it is put in a microwave oven.

Some commercially available frozen foods have a package made of a paper box, and the whole paper box is placed in a microwave oven so that it can be heated. An example of a paper box used for such a purpose can be seen in Patent Document 1.
Japanese Utility Model Publication No. 3-120472 (full text specification, page 3-4, FIG. 1-3)

  When heated in a microwave oven or left at room temperature and naturally thawed, water from frozen foods (whether it is a component liquid of food or the frost attached to the food surface has been dissolved) In this specification, the expression “water” is used as a generic name in order to simplify the explanation. Frozen foods produce a significant amount of water when heated, depending on the type. When the package of frozen food is a paper box, water is likely to leak from the gap where the flap is folded. If water leaks immediately after the freshly heated food in a paper box is taken out of the microwave oven, the water is very dangerous because it is in hot water.

  The present invention has been made in view of the above points, and in a food paper box of a type that can be heated in a microwave oven while containing frozen food, provides a food paper box in which water from frozen food does not leak outside. For the purpose.

  (1) In order to achieve the above object, the present invention is separated from the bottom part of the bottom part, the two side parts connected to both long sides of the bottom part, and at least one side part. A top portion that is continuous to the long side of the side, a bottom flap that is continuous to both short sides of the bottom portion, a side flap that is continuous to both short sides of the side portion, and both of the top portion In a food paper box formed by opening and pasting a blank sheet provided with a top flap continuously provided on the short side, the gap between the two flaps is closed between the bottom flap and the side flap, and A web having an edge portion separated from the bottom portion by a predetermined distance is formed.

  According to this configuration, between the bottom flap and the side flap, which should normally be a gap, is blocked by the web, and a water leakage prevention barrier for the height of the rising from the bottom portion of the web is formed. Even if water comes out of the contents, it can be kept inside the paper box without leaking to the outside.

  (2) Further, in the food paper box having the above-described configuration, the present invention enlarges the gap between the side flap and the bottom flap by retreating the edge on the side adjacent to the bottom flap. The web is formed in the formed gap.

  When the bottom flap and the side flap extend in the same direction, it is impossible to open the door simply by connecting both edges. In the case of the present invention, the edge of the side flap is retracted to enlarge the gap with the bottom flap, and the web is formed in the enlarged gap. Both the side flaps and the bottom flap can be folded to form a predetermined box shape.

  (3) The present invention is characterized in that in the food paper box having the above-described configuration, an opening line is formed at a position above the web.

  According to this configuration, even if the paper box is opened, the outflow height of water does not fall below the height of the web, and the presence of the web does not fade.

  According to the present invention, it is possible to form a food paper box in which water discharged from the contents does not leak to the outside, and it is suitable as a food paper box that can be heated in a microwave while containing frozen food. In addition, since the formation of the paper box is sufficient only by slightly modifying the shape of the blank sheet, the invention can be carried out without requiring a significant remodeling of the packaging machine and without increasing the cost.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3 are perspective views of the food paper box. FIG. 1 shows a sealed state, FIG. 2 shows an opened state, and FIG. 3 shows a state in which the flap on one side is opened after being opened. FIG. 4 is a development view of the blank sheet.

  The food paper box 1 in FIG. 1 is formed by opening the blank sheet 10 shown in FIG. 4 and pasting a predetermined portion with hot air, hot melt adhesive, cold glue adhesive or the like. The blank sheet 10 is a printed paper sheet having material characteristics such as water resistance, oil resistance, heat resistance, and water repellency required for food paper boxes that are heated in a microwave oven with frozen foods in a predetermined shape. It is formed by punching, folding lines (represented by dotted lines), zipper for opening or half-cut lines (represented by broken lines), and consists of the following parts.

  First, there is a bottom portion 11. The bottom portion 11 has a rectangular shape, and rectangular side portions 12 and 13 are continuously provided on both long sides thereof. The side part 12 is the front of the food paper box 1 and the side part 13 is the back of the food paper box 1. A top portion 14 is connected to the long side of the side portion 13 on the side away from the bottom portion 11.

  Bottom flaps 15 </ b> L and 15 </ b> R are connected to both short sides of the bottom portion 11. Similarly, side flaps 16L and 16R are continuously provided on both short sides of the side portion 12, side flaps 17L and 17R are continuously provided on both short sides of the side portion 13, and a top flap is provided on both short sides of the top portion. 18L and 18R are continuously provided. A front flap 19 is connected to the long side of the top portion 14 on the side away from the side portion 13. The bottom flap 15L, the side flaps 16L, 17L, and the top flap 18L all extend in the left direction in FIG. 4, and the bottom flap 15R, the side flaps 16R, 17R, and the top flap 18R are all in the right direction in FIG. Extend to. Only the front flap 19 extends in a direction perpendicular to the other flaps, that is, upward in FIG.

  An opening line 20 is formed from the top portion 14 to the front flap 19 by a zipper process or a half cut process in which a blade is inserted to the middle of the paper thickness. An opening line 21 that cooperates with the opening line 20 is also formed on the side portion 12. When the opening lines 20 and 21 are broken, an openable and closable lid portion 22 (see FIG. 2) connected to the side portion 13 is formed.

  In the blank sheet 10, the side portion 12 is bent with respect to the bottom portion 11, the top portion 14 is bent with respect to the side portion 13, and the front flap 19 is overlaid on the outside of the side portion 12, When the outer surface of the portion 12 is glued and sack pasted, and the blank sheet 10 with the sack pasted is opened, a cylindrical body having a rectangular cross section is formed. If frozen food is put into this body part and the opening part of both ends of a body part is sealed, it will become the completed form of the food paper box 1 containing a content.

  The sealing procedure for the cylindrical body is as follows. First, the side flaps 16L, 16R, 17L, and 17R are folded inward. The bottom flaps 15L and 15R are erected on the outside. Further, the top flaps 18L and 18R are folded on the outside, and the outer surfaces of the bottom flaps 15L and 15R and the inner surfaces of the top flaps 18L and 18R are glued. As a result, the sealing of the cylindrical body and the formation of the food paper box 1 is completed.

  The food paper box 1 can expose the inside by breaking the locations of the opening lines 20 and 21 (see FIG. 2). Heating by a microwave oven is performed with the lid portion 22 closed again after being once opened in this manner. The lid portion 22 is closed in order to confine steam and produce a steaming effect.

  A feature of the present invention is that the gap between the bottom flap and the side flap is closed between the bottom flap 15L and the side flaps 16L and 17L, and between the bottom flap 15R and the side flaps 16R and 17R, and the edge portion. Is that the web 30 is formed at a predetermined distance from the bottom portion 11.

  In order to provide the web 30, among the edge portions of the side flaps 16L, 17L, 16R, and 17R, the edge portion on the side adjacent to the bottom flaps 15L and 15R is retracted to widen the gap with the bottom flap. A web 30 is formed in the enlarged gap. The formed web 30 has a fan shape in which the corners of the bottom 11 and the side 12 and the corners of the bottom 11 and the side 13 are used as a fan. Fold lines are formed at the boundary between the web 30 and the bottom flaps 15L and 15R and at the boundary between the web 30 and the side flaps 16L, 17L, 16R and 17R.

  After forming the cylindrical body as described above, the side flaps 16L, 16R, 17L, and 17R are folded inward, and the bottom flaps 15L and 15R are stood on the outside, and the side flaps 16L, 16R, 17L, and 17R are The web 30 is tucked between the bottom flaps 15L and 15R. 1 and 2, the shape of the web 30 that has been squeezed is indicated by a dotted line.

  The web 30 normally closes the gap between the bottom flap and the side flap, which should be a gap, and forms a water leakage prevention barrier for the height of the web 30 rising from the bottom portion 11. For this reason, even if water comes out of the contents, it can be kept inside the food paper box 1 without leaking it to the outside.

  The opening lines 20 and 21 are located above the web 30. Therefore, even if the opening lines 20 and 21 are broken and the lid portion 22 is opened, the height of the edge of the opening remaining behind is higher than the web 30, and the outflow height of water is lower than the height of the web 30. There is no. Therefore, the existence significance of the web 30 is not diminished.

  Although one embodiment of the present invention has been described above, various modifications can be made without departing from the spirit of the present invention.

  INDUSTRIAL APPLICABILITY The present invention can be widely used in a paper box for frozen foods, in particular, a paper box of a type that can be heated by being put in a microwave oven while containing the contents.

Perspective view of a sealed food paper box Perspective view of unopened food paper box The perspective view of the state which opened and opened the flap of one side surface Blank sheet development

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Food paper box 10 Blank sheet 11 Bottom part 12, 13 Side part 14 Top part 15L, 15R Bottom flap 16L, 16R, 17L, 17R Side flap 18L, 18R Top flap 20, 21 Opening line 30 Web

Claims (3)

A bottom part, two side parts provided continuously on both long sides of the bottom part, a top part provided on a long side of at least one side part away from the bottom part, A blank including a bottom flap continuously provided on both short sides of the bottom portion, a side flap provided continuously on both short sides of the side portion, and a top flap provided continuously on both short sides of the top portion. In a food paper box formed by opening and pasting a sheet,
A food paper box, wherein a web is formed between the bottom flap and the side flap so as to close a gap between the two flaps and an edge is separated from the bottom portion by a predetermined distance.   The edge part of the side flap adjacent to the bottom flap is retreated, the gap with the bottom flap is enlarged, and the web is formed in the enlarged gap. The food paper box according to 1.   The food paper box according to claim 1, wherein an opening line is formed at a position above the web.

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