JPH0479902B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a drop lid for a packaging box.

[Prior art] The structure of a conventional drop lid of this type is shown in Figures 10 to 1.
Shown in Figure 3.

As shown in FIG. 10, the drop lid 1 is made up of a quadrilateral cardboard 2 and a decorative paper 3 that is slightly larger than the quadrilateral cardboard 2. The decorative paper 3 is attached to the outside of the cardboard 2 with an adhesive.

A pair of adjacent corners of the decorative paper 3 are cut at 45 degrees so that the corners of the cardboard are inscribed, forming oblique sides 4. This decorative paper 3 is folded around its periphery as shown in FIG. 11, leaving the side edge opposite to the side on which the oblique sides 4, 4 are formed, and is folded and pasted on the back side of the cardboard 2. This folded portion is indicated by reference numeral 5.

The portion that remains without being folded back becomes the bonding side 6 shown with diagonal lines.

The adhesive side 6 is adhered to the inner surface of the main body 7 of the packaging box with an adhesive, as shown in FIG.

On the free end side of the drop lid 1, one end of a loop-shaped knob 8 is fixed to the back surface of the central part.

On the other hand, what is indicated by the symbol 9 in Fig. 13 is the inner box.
The height of the peripheral wall is higher than the height of the peripheral wall 7a of the main body 7,
It is lower by the thickness of the drop lid 1. Therefore, when the drop lid 1 is closed, the top surface of the drop lid 1 becomes flush with the upper end of the peripheral wall 7a of the main body 7.

[Problems to be Solved by the Invention] However, when the above structure is adopted, the following problems arise.

That is, the adhesive side 6 is attached to the inner surface of the peripheral wall of the main body with an adhesive, but this attachment operation is performed manually. Since the adhesion position is determined by eye, it varies depending on the skill level of the operator, and there is a problem in that when the drop lid is closed, its top surface is not flush with the top end of the peripheral wall of the main body.

[Means for Solving the Problems] In order to solve the above-mentioned problems, in the present invention, in order to solve the above-mentioned problems, rectangular cardboard sheets that serve as drop lids are placed at predetermined intervals on the left and right sides of the back side of a rectangular decorative paper whose four corners are cut at 45 degrees. At the same time, a step of attaching a long thin piece of cardboard having a width twice as long as the depth of the box body minus the wall thickness of the cardboard with a slight gap between the two; A manufacturing method was adopted that included the process of folding and pasting the periphery of the paper to the back side of each cardboard, and the process of cutting the long and thin cardboard located between the left and right cardboard from the center in the width direction along with the decorative paper.

[Function] When the method described above is adopted, the cut long and thin cardboard can be freely bent through the decorative paper, and its width is equal to the length of the box body minus the wall thickness of the cardboard. It becomes a positioning reference piece.

Therefore, by attaching the reference piece to the inner surface of the peripheral wall of the main body with the lower end in contact with the bottom plate of the main body, the drop lid can always be positioned and attached at the correct position.

[Example] Hereinafter, details of the present invention will be explained based on examples shown in the drawings.

FIGS. 1 to 9 illustrate an embodiment of the method of the present invention, and FIGS. 7 to 9 show a method for manufacturing a drop lid.

In each figure, the reference numeral 10 is made of decorative paper and formed into a rectangular shape, with the four corners being oblique sides 11 cut at 45 degrees, and the back side of which is coated with pressure-sensitive adhesive over the entire surface. There is.

On the back side of this decorative paper 10, two pieces of quadrilateral cardboard 12 and 13, which serve as drop lids, are pasted at a predetermined distance from each other on the left and right sides. An elongated cardboard 14 is attached to both of them at a small distance, for example, a distance d that is approximately equal to the thickness of the cardboard 12 and 13.

The width of this elongated cardboard 14 is set to be twice the length obtained by subtracting the thickness of the cardboard from the depth of the main body of the box, which will be described later, and the length of the cardboard 12 and 13.
approximately equal to the length of

Moreover, it is one size larger than the whole cardboard 12, 13, 14, and the outer corner of the cardboard 12, 13 is inscribed in the center of the oblique side 11 of the decorative paper 10.

After pasting the cardboards 12 to 14 as described above, the periphery of the decorative paper 10 is folded back to the back side of the cardboards 12 to 14 and pasted as shown in FIG. This folded portion is indicated by reference numeral 15.

Next, as shown in Fig. 9, the left and right cardboard 12
One end of a loop-shaped knob 16 is fixed to the center of the back surface near the outer periphery of the cardboard 14, and reinforcing paper 17 is adhered to cover the back surface of the cardboard 14 and to straddle the left and right cardboard 12, 13. This reinforcing paper 17 is not necessarily indispensable.

Subsequently, the cardboard 14 is cut from the center in the width direction as shown by the dashed line l in FIG. The width h of the cardboard 14 after cutting is equal to the length obtained by subtracting the wall thickness of the cardboard from the depth of the box body, which will be described later. This cardboard will be referred to as a positioning reference piece 18.

In this way, the drop lid 19 is completed.

On the other hand, the reference numeral 20 indicates the main body of the box, which has a peripheral wall 21 having a height approximately equal to the width of the positioning reference piece 18 plus the thickness of the cardboard.

Inside the main body 20, a middle frame 22 formed by folding relatively thick paper is housed. The middle frame 22 has an outer shape that is equal to the inner dimension of the main body 20, and its height is higher than the height of the peripheral wall 21 of the main body 20.
It is lower by the thickness of the wall.

Next, a method of attaching the drop lid 19 configured as above will be explained.

First, as shown in FIG.
A double-sided adhesive tape 23 is attached to the widthwise center of the outer surface over the entire length. Then, a release paper (not shown) is peeled off, and it is attached to the inner surface of the peripheral wall 21 of the main body 20.

At this time, the lower end of the positioning reference piece 18 is connected to the main body 2.
0, the upper end will be in contact with the middle frame 22.
It is flush with the top edge of the holder, allowing accurate positioning without visual measurement.

Note that the position, width, etc. of the double-sided adhesive tape 23 are not limited to the illustrated example, and can be selected in any manner.

In addition, what is indicated by the reference numeral 24 in FIGS. 5 and 6 is an inner box, on which the product 25 is stored.

Since this embodiment is configured as described above,
Accurate positioning can be achieved simply by bringing the lower end of the positioning reference piece 18 into contact with the top surface of the bottom plate of the main body.
The positioning reference piece 18 and the drop lid 19 are the decorative paper 1.
0, the drop lid 19 can be freely opened and closed, and when closed, it is flush with the upper end of the peripheral wall 21 of the main body 20, as shown in FIG.

[Effect] As is clear from the above description, according to the present invention, the positioning reference piece is attached in a bendable manner through the decorative paper, so when the drop lid is attached, the positioning reference piece is not attached. The mounting position can be determined accurately simply by touching the lower end to the top surface of the bottom plate of the main body, and there will be no variation in the mounting position.

[Brief explanation of the drawing]

Figures 1 to 9 explain one embodiment of the present invention, in which Figure 1 is a perspective view of the drop lid, Figure 2 is a perspective view of the main body, Figure 3 is a perspective view of the inner frame, and Figure 4 is a perspective view of the main body. The figure is an overall perspective view, Fig. 5 is a longitudinal side view, Fig. 6 is an enlarged longitudinal side view, Figs. 7 to 9 are plan views explaining the manufacturing method, and Figs. 10 to 13 show the conventional structure. 10 and 11 are plan views for explaining the manufacturing method, FIG. 12 is a perspective view with the drop lid open, and FIG. 13 is a partially enlarged longitudinal sectional side view. 10... Decorative paper, 12-14... Cardboard, 16...
... Knob, 18 ... Positioning reference piece, 19 ... Drop lid, 20 ... Main body, 21 ... Peripheral wall, 22 ... Middle frame, 23 ... Double-sided adhesive tape.

Claims (1)

[Claims] 1. Attach pieces of rectangular cardboard with the four corners cut at a 45-degree angle to the left and right sides of the back of the rectangular decorative paper, which will serve as lids, and separate them by a predetermined distance. The process of attaching a long thin piece of cardboard, which is equal in length to both pieces of cardboard and has a width twice as long as the depth of the box body minus the wall thickness of the cardboard, at a distance from each other; A method for manufacturing a drop lid for a packaging box, comprising the steps of: turning the cardboard back and pasting it; and cutting the long and thin cardboard together with the decorative paper from the center in the width direction.