JP2000344233A - Tapered corrugated cardboard tray - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stack a plurality of trays in a mutually inserted state by providing separate ruled lines extending from the base ends of ruled lines obliquely at a predetermined angle to joint flaps and aligning side end edges with these rules to fix other side surfaces to the joint flaps. SOLUTION: A tray is assembled by bending one corrugated cardboard blank (a). The closed surface part to the opening part of a box-shaped container is provided in the central part of the blank (a) and side surface parts 2 are provided in four side edges of the closed surface part through rules 4 and joint flaps 3 are provided in both ends of one set of the side surface parts 2a, 2b through separate ruled lines 5 and slit-like gaps 7 are provided between the side end edges of one set of other side surface parts 2c, 2d and the joint flaps 3. Further, separate ruled lines 6 forming a proper angle exceeding 90 deg. with respect to the rules 4 are provided in the joint flaps 3 from both ends of the rules 4. By this constitution, triangular parts 31 held between the rules 5, 6 are arranged to form the side surface parts of the tray in an opened state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box-shaped packaging container having a rectangular cross section, which is covered with a cap on the upper end of the packaging container to close an opening on the upper surface of the packaging container or as a bottom component of the packaging container. The present invention relates to a tapered corrugated cardboard tray which is attached to the lower end of a sleeve having a lower surface opening to close the lower surface opening of the sleeve.

[0002]

2. Description of the Related Art Conventionally, a corrugated cardboard tray of this type has a relatively shallow box-like shape having a rectangular shape with a right-angle cross section which is externally fitted to an upper opening of a box-shaped packaging container or an upper end or a lower end of a sleeve constituting a side wall of the packaging container. The side portion extends perpendicularly to a direction perpendicular to the surface from a side edge of a closing surface portion for closing the opening. The above-mentioned tray is usually constructed by folding and assembling one blank, and in the unfolded state of the blank, the side portions are extended to the respective side edges of the closed surface portion via ruled lines, and further, a pair of opposing side surfaces are provided. Joint flaps extend from both ends of the portion via ruled lines, respectively. Each side portion is bent at right angles to the closed surface portion along the ruled line, and the joint flaps extending at both ends of the pair of opposed side surfaces are bent at right angles inward with respect to the side portions. And is overlapped on another pair of side portions, and is fixed to the side portions by fixing means such as bonding or staple. This tray is usually
Stored and transported in assembled state.

[0003]

However, since the above-mentioned trays are formed in a vertical box shape on the side, if a plurality of trays are to be stacked for storage or transportation, the upper and lower openings are closed. The members must be stacked so that the side surfaces thereof are flush with each other, and if the upper and lower opening closing members are slightly displaced, they will collapse. Therefore, it is difficult to stack for storage and transportation, and a large space is required for storage and transportation. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the related art, and the object thereof is to be able to easily manufacture by bending and assembling a single blank, and to sequentially stack in a fitting shape. It is to provide a corrugated cardboard tray that can be used.

[0004]

In order to achieve the above object, a cardboard tray according to the present invention is constructed by folding and assembling a single cardboard blank, and opening an opening of a packaging container. A right-sided quadrilateral closing surface portion for closing, and a side surface portion extending on each side edge of the closing surface portion through a first ruled line and bent in the same direction along the ruled line, and The side portions are extended from the side edge of one side portion via a second ruled line, and connected to a joint flap bent along the ruled line by overlapping and fixing the other side portion. In cardboard trays,
The joint flap is provided with a third ruled line extending obliquely from the base end of the second ruled line at a predetermined angle with respect to the ruled line, and fixing the other side surface portion to the joint flap with a side edge aligned with the ruled line. Is what you do.

[0005]

In the tray constructed as described above, the triangular portion sandwiched between the second ruled line and the third ruled line serves as a gore between the adjacent side portions,
The adjacent side portion extends outward by the angle of the triangular portion sandwiched between the second ruled line and the third ruled line.

Therefore, when the sheets are stacked, the upper tray is sequentially fitted to the lower tray. In this way, the upper and lower trays are fitted to each other, so it is difficult to collapse even when many are stacked, and it can be stacked in a stable state, so many can be stored in a narrow place, and during transportation and storage Significant space saving can be achieved.
Incidentally, the conventional trays of this type can be stacked by using appropriate auxiliary means and the like, but the tray of the present invention, as shown in FIG. The height is greatly reduced, space can be saved even in the height direction, and stability during stacking is high. Also, as in the case of this type of conventional tray, it can be manufactured simply by bending and assembling one blank, and it is only necessary to provide one diagonal ruled line on each joint flap extending on the side surface. It is simple, and there is no special cost increase compared to the conventional tray of this kind.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. The tapered corrugated cardboard tray of the present invention is generally indicated by reference numeral A in FIG. 1 and is shown in the figure for closing an opening of a box-shaped packaging container B having a rectangular opening. This tray A
Rectangular closing surface 1 corresponding to the opening of box-shaped packaging container B
And a side surface portion 2 provided on a peripheral edge of the closed surface portion 1, and has a thin box shape with one side opened as a whole. Then, the tray A has a side surface portion 2 (2a, 2b, 2
c, 2d) are slightly inclined outward toward the opening side and spread toward the opening side.

The tray A is constructed by folding and assembling a single cardboard blank a. The blank a
Has a rectangular closed surface 1 for closing the opening of the box-shaped packaging container B at the center thereof, and four sides of the closed surface 1. Each of the edges has a side surface portion 2 extending via a first ruled line 4. A pair of side surfaces 2a and 2b (hereinafter referred to as “side surfaces” for convenience of description) are respectively extended to a pair of opposing side edges of the closing surface unit 1 (side edges on the shorter side of the closing surface unit 1 in the illustrated example). , A joint flap 3 is extended at both ends thereof via a second ruled line 5, and a pair of opposite side edges of the joint flap 3 and the closing surface 1 are provided. In the illustrated example, the side edges of another pair of side portions 2c and 2d (hereinafter referred to as “long side surface side portions” for convenience of description) are respectively extended to the long side of the closed surface portion in the illustrated example. A slit-shaped gap 7 is provided between the edge and the edge.

The second ruled line 5 provided between the width side surface portions 2a, 2b and the joint flaps 3 connected to both ends thereof is provided between the closing surface portion 1 and the width side surface portions 2a, 2b. Is provided at right angles to the first ruled line 4,
The joint flap 3 provided outside the second ruled line 5 is attached to the ruled line 4 from both ends of the first ruled line 4 provided between the closed surface portion 1 and the width side surface portions 2a and 2b. A third ruled line 6 at an appropriate angle exceeding 90 degrees is provided. That is, the third ruled line 6 has the same base end as the second ruled line 5 and extends at a predetermined angle with the ruled line 5.

[0010] Side surfaces 2a, 2b,
2 c and 2 d are bent in the same direction according to the first ruled line 4, specifically, toward the inner surface of the closed surface 1. Further, the joint flap 3 is bent inward by the second ruled line 5, and further bent in the direction of the length side surface side portions 2 c and 2 d via the third ruled line 6. The joint flap 3 extends beyond the third ruled line 6 at the side of the length side.
The third ruled line 5 is overlapped on the back side of 2c, 2d, and the third ruled line 5 is aligned with the side edge of the side surface portion 2c, 2d on the length side, and is fixed to the side surface portion 2c, 2d by steeping or bonding.

The lower edge of the joint flap 3 is cut obliquely so as not to protrude from the lower end edges of the side surfaces 2c, 2d when the joint flap 3 is fixed on the side surfaces 2c, 2d. Have been.

Thus, the tray 1 assembled in this manner is composed of the side edges 2a and 2b and the side edges 2a and 2b.
A triangular portion 31 interposed between the second and third ruled lines 5 and 6 of the joint flap 3 is interposed between the edges of c and 2d, and the side portion is slightly widened toward the opening side. You will be in a state to do.

[Brief description of the drawings]

FIG. 1 is a perspective view of a tapered cardboard tray showing an embodiment of the present invention, wherein FIG.
(B) is a perspective view seen from the back side.

FIG. 2 is a development view.

FIG. 3 is a cross-sectional view showing a state in which the opening is closed by being attached to the upper opening of the box-shaped packaging container.

FIG. 4 is an explanatory diagram showing a height at the time of stacking as compared with a conventional tray.

[Explanation of symbols]

 A: Corrugated cardboard tray a: Blank 1: Closed face 2: Side face 3: Joint flap 4: First ruled line 5: Second ruled line 6: Third ruled line

Claims (1)

[Claims] A cardboard blank is formed by folding and assembling a rectangular box-shaped closing surface for closing an opening of a packaging container, and each side edge of the closing surface is extended through a first ruled line. And side surfaces bent in the same direction along the ruled lines, and adjacent side portions are extended to the side edges of one side portion via a second ruled line, and A tapered corrugated cardboard tray connected to the joint flap bent along with the other side portion by overlapping and fixing the joint flap,
A third ruled line extending obliquely from the base end of the ruled line at a predetermined angle to the ruled line, and fixing the other side surface portion to a joint flap by aligning a side edge with the ruled line. With cardboard tray.