JP4238639B2 - Easy-to-deploy paper tray container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a paper tray-like container, and more particularly to an easily deployable paper tray-like container that can be easily developed once assembled.
[0002]
[Prior art]
Conventionally, a paper tray-like container has a tongue piece (51) as shown in FIGS. 6 (a) and (b) attached to a side plate (52), or FIGS. 7 (a) and (b). After folding the folded joint piece (61) and the second folded joint piece (62) in two at the four corners as shown in FIG.
However, each method is rigid because it is firmly bonded, such as by gluing the corners, and even if you try to unfold it, the paper is torn or crushed and cannot be easily peeled off and difficult to unfold There was a problem.
[0003]
Further, there is a paper container that is crushed into a flat shape (for example, see Patent Document 1).
[0004]
[Patent Document 1]
Japanese Utility Model Publication No. 5-16619 (page 2)
[0005]
However, it is the same in that it is difficult to unfold, and the side plate is folded inward so that it is not suitable for the work of making it easy to take out the contents.
[0006]
[Problems to be solved by the invention]
The present invention has been made to solve the above-mentioned problems related to paper tray-like containers. When cooking cakes, confectionery, etc., the present invention can be used as a container. It is possible to easily extract the contents by expanding the container, or when removing the cake, confectionery etc. and eating it as it is, the container can be expanded like a flat plate with one touch, and the contents can be easily extracted. It is an object to provide an easily deployable paper tray container.
[0007]
[Means for Solving the Problems]
According to the first aspect of the present invention, a side plate and a flange are successively connected to each of a pair of opposite sides of a square bottom plate via a folding line, respectively, Each of which extends in the lateral direction to form a flange tongue piece having substantially the same width as the flange. Between each side plate and the side plate, a corner flap for connecting adjacent side plates to each other is provided. A paper tray-like container having an open top surface assembled with a blank provided with a folding line that bisects each corner flap from the corners of the bottom plate toward the diagonally outward direction. When a pair of corner flaps are folded and folded so that the tip ends of the corner flaps are close to each other, the adjacent one of the adjacent flanges is connected to the edge of the flange connected to the side plate where the corner flaps are bent. Made of easily deployable paper, characterized in that a flange overlap piece and a flange extension piece, which are approximately the same width as the flange, are successively connected via a fold line so as to cover the tip of the bent corner flap It is a tray-like container.
[0008]
As described above, according to the first aspect of the present invention, the end edges of the flanges connected to the side plate on which the corner flaps are bent are bent so as to cover the front ends of the pair of bent corner flaps adjacent to each other. Since the flange overlap pieces and flange extension pieces, which are approximately the same width as the flange, are successively arranged via the wire, the flange extension pieces are separated from the side plates by pulling with the tips of the pair of flange extension pieces. Automatically opens and the container is unfolded.
[0009]
The invention of claim 2 is the easily deployable paper tray-like container according to claim 1, wherein the flange extension piece is bonded only to a side plate overlapping the flange extension piece. It is.
[0010]
Thus, according to the invention of claim 2, since the flange extension piece is bonded only to the side plate overlapping the flange extension piece, the container can be easily separated from the side plate simply by pulling the flange extension piece. Can be deployed.
[0011]
According to a third aspect of the present invention, in the first aspect of the invention, the flange extension piece is bonded to a side plate that overlaps the flange extension piece and the tips of the corner-folded corner flaps. It is an easily deployable paper tray container.
[0012]
Thus, according to the third aspect of the present invention, since the flange extension piece is bonded to the side plate overlapping the flange extension piece and the tips of the corner flaps folded in a mountain, the flange extension piece is bonded relatively firmly. It is a tray-like container.
[0013]
According to a fourth aspect of the present invention, in the first aspect of the invention, the flange extension piece is formed with a protrusion protruding toward the flange overlap piece on a fold line at a boundary between the flange extension piece and the flange overlap piece, An easily deployable paper tray-like container characterized by being fitted with a protrusion.
[0014]
In this way, according to the invention described in claim 4, the protrusion protruding toward the flange overlap piece is formed on the fold line at the boundary between the flange extension piece and the flange overlap piece, and the protrusion is fitted to the flange extension piece. Can hold the corner flap.
[0015]
According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects of the present invention, the pair of opposing flanges has a flange tongue piece on the side where the flange extension piece is not provided continuously. It is an easily deployable paper tray-like container, characterized in that it is assembled.
[0016]
As described above, according to the fifth aspect of the present invention, the pair of opposing flanges are assembled with the flange tongue piece on which the flange extension piece is not continuously provided facing upward, so that the flange extension piece is formed. It is possible to prevent the formed side plate from falling inward and to maintain the shape as a tray.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
The easily developable paper tray container of the present invention will be described in detail below based on one embodiment.
FIG. 1 is a development explanatory view showing an embodiment of a blank of the easily developable paper tray-like container of the present invention, and FIG. 2 is a perspective explanatory view showing an embodiment of the state in which FIG. 1 is assembled in a container shape. It is.
[0018]
First, the blank (10) will be described with reference to FIG.
A side plate (12) and a flange (13) are successively connected to one pair of two opposite sides of the rectangular bottom plate (11) via a folding line.
The left and right ends of each flange (13) extend in the lateral direction to form flange tongues (131, 131) having substantially the same width as the flange.
[0019]
A side plate (14) and a flange (15) are successively connected to the other pair of opposite sides of the rectangular bottom plate (11) via a folding line.
The left and right ends of each flange (15) extend in the lateral direction to form flange tongues (151, 151) having substantially the same width as the flange.
[0020]
Between each side plate (12) and side plate (14), there is provided a corner flap (16) that connects adjacent side plates to each other, and each corner flap starts from each corner of the bottom plate. A folding line (b) is provided to bisect each corner flap toward the diagonally outward direction.
[0021]
Then, the flange overlap piece (18) and the flange extension are respectively attached to the end edges (shorter flange in FIG. 1) of the pair of opposing flanges (13) of either one of the two sets via a fold line. The pieces (17) are successively provided.
[0022]
The paper substrate used for the blank has moderate rigidity and, depending on the application, has resistance to heating by a microwave oven, oven, etc., so there is little generation of odor due to heating, and moisture generated by cooking Therefore, it is necessary to use a material that is water-resistant and that absorbs little moisture from the end surface of the paper. As a material that satisfies these requirements, virgin paper such as cup base paper having a basis weight of about 150 to 400 g / m ² can be suitably used.
[0023]
A composite paper in which a heat-resistant polypropylene resin, an amorphous polyester resin, or the like is laminated on one side or both sides of a paper base material may be used.
[0024]
Next, an example of a procedure for assembling a tray-like container from the blank (10) having such a shape will be described.
[0025]
Four side plates (12, 12, 14, 14) are folded along the folding lines at the four sides of the rectangular bottom plate (11), and the corner flaps at the four corners are folded along the folding lines (b). Further, the flanges (13, 13, 15, 15) connected to the leading edges of the four side plates are valley-folded along the folding line.
[0026]
One in which the flange extension piece (17) is formed so that the tip ends of each pair of corner flaps (16, 16, 16, 16) of the four corners that are folded and bent first are opposed to each other ( In this case, the side plate (12) of the shorter side is bent, and the flange overlapping piece (18) and the flange extension piece (17) connected to the leading edge of the flange (13) are ridged along the folding line. The tray-shaped container (20) is assembled so as to cover the pair of corner flaps (16, 16), particularly the tip end portions (161, 161) of the corner flaps by folding or valley folding (see FIG. 2).
[0027]
At this time, the adjacent flanges (13 and 15) are assembled with the flange (15) not provided with the flange extension piece (17) facing each other. That is, it is important to assemble with the flange tongues (151, 151) facing up and the flange tongues (131, 131) facing down.
[0028]
This prevents the side plate (12) connected to the flange extension piece (17) from falling to the inside of the container and maintains the shape as a tray container.
At this time, it is more preferable to provide a folding line (c) across the flange tongue piece on the upper flange tongue piece (151, 151) so that adjacent flanges can be easily stacked.
[0029]
In addition to the above-mentioned method of bonding the flange extension piece (17) and the side plate (12), the holding method of the corner flap for holding the tray-like container is not limited to the flange extension piece (17) and the side plate. At the same time as (12), a method of adhering a total of three portions of the folded corner flap (16) and the side plate (12) may be used.
[0030]
Further, as shown in FIG. 4, a protrusion (171) partially projecting toward the flange overlap piece (18) is formed on the fold line at the boundary between the flange extension piece (17) and the flange overlap piece (18), for example, 2 A method of forming about several places and holding them by a method such as fitting may be used.
[0031]
The shape of the flange extension piece (17) may be any shape as long as it can hold the tip of the bent corner flap (16). An example of the shape is shown in FIGS.
[0032]
As shown in FIG. 5D, a fold line (d) for facilitating pinching of the flange extension piece (17) may be provided in parallel with the flange (13) provided with the flange extension piece (17). good.
[0033]
Next, an example of a procedure for developing the tray-like container assembled in this way will be described.
For example, after a cake material or the like is put in an easily deployable paper tray-like container and cooked in an oven or the like, when the pair of flange extension pieces (17, 17) are pulled, the flange extension pieces are removed from the side plates (12, 12). The corner flaps (16, 16) that have been peeled off and attached are opened, and the other pair of side plates (14, 14) are also opened. The contents can be easily deployed like a flat plate with almost one-touch operation. The cooked cake which is (30) can be easily taken out. Alternatively, the contents can be easily eaten as they are.
[0034]
【The invention's effect】
Since the easily deployable paper tray container of the present invention has the above-described configuration and operation, the tray container can be easily deployed with one touch by pulling the flange extension piece connected to the flange. Can be flat.
In addition, since the corner flap between the side plates is folded back, there is no leakage even if liquid is put inside, and there is no permeation into the paper because there is no paper end face.
[Brief description of the drawings]
FIG. 1 is a development explanatory view showing an embodiment of a blank of an easily developable paper tray-like container according to the present invention.
FIG. 2 is a perspective explanatory view showing a state where the blank of FIG. 1 is used as an easily deployable paper tray container.
FIGS. 3A and 3B show an easily deployable paper tray-like container, in which FIG. 3A is a perspective explanatory view before deployment, and FIG. 3B is a perspective explanatory view after deployment;
FIG. 4 is a development explanatory view showing another embodiment of the easily deployable paper tray-like container blank of the present invention.
FIGS. 5A to 5D are explanatory views showing an embodiment of the shape of the flange extension piece. FIGS.
6A and 6B show a conventional paper tray-like container, in which FIG. 6A is a development explanatory view, and FIG. 6B is a perspective explanatory view after assembly.
FIGS. 7A and 7B show another conventional paper tray-like container. FIG. 7A is a development explanatory view, and FIG. 7B is a perspective explanatory view after assembly.
[Explanation of symbols]
10. Blank 11 ... Bottom plate 12 ... Side plate 13 ... Flange 131 ... Flange tongue 14 ... Side plate 15 ... Flange 151 ... Flange tongue 16 ... Corner flap 161 ... Corner flap Tip 17 ... Flange extension piece 18 ... Flange overlap piece b ... Bending line c ... Bending line d ... Bending line 20 ... Paper tray-like container 30 ... Contents 51 ... Tongue piece 52 ... Side Face plate 61 ... Folding joint piece 62 ... Second folding joint piece 63 ... Side plate

Claims (5)

On each pair of two sides facing each other of the rectangular bottom plate, a side plate and a flange are sequentially connected via a folding line, respectively.
The left and right ends of the flanges extend in the lateral direction to form flange tongues having substantially the same width as the flanges,
A corner flap is provided between each side plate and the side plates so that adjacent side plates are connected to each other. Each corner flap is inclined outwardly from each corner of the bottom plate. There is a fold line that bisects approximately,
A paper tray-like container with an open top surface assembled with a blank,
When each of the pair of corner flaps is folded in a mountain and folded so that the tips of the corner flaps are close to each other,
Flange overlap pieces having substantially the same width as the flanges via the fold lines so as to cover the tip portions of the pair of bent corner flaps adjacent to the end edges of the flanges connected to the side plate on which the corner flaps are bent. An easily deployable paper tray-like container, characterized in that flanges and flange extension pieces are successively arranged. The easily expandable paper tray-like container according to claim 1, wherein the flange extension piece is bonded only to a side plate overlapping the flange extension piece. 2. The easily deployable paper tray-like container according to claim 1, wherein the flange extension piece is adhered to a side plate overlapping the flange extension piece and to the tips of the corner-folded corner flaps. . 2. The flange extension piece is characterized in that a protrusion protruding toward the flange overlap piece is formed at a fold line at a boundary between the flange extension piece and the flange overlap piece, and is fitted to the protrusion. The easily deployable paper tray container as described. The pair of opposed flanges are assembled with a flange tongue piece on which the flange extension piece is not continuously provided facing upward, according to any one of claims 1 to 4. Easily deployable paper tray container.

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