JPS5827948Y2 - square bag - Google Patents

Description

[Detailed Description of the Invention] This invention is an improvement on relatively large arrays molded from strong paper or other materials.

In this type of bag, the left and right sides are folded into an M-shape, and the bottom opening is bent toward the back plate and adhered with a wide adhesive tape, so when the M-shaped sides are opened during use, the bottom cannot be opened smoothly.
One drawback was that it was extremely difficult to form the bottom surface.

The purpose of this invention is to eliminate the drawbacks of the conventional method and to provide a row arrangement that allows a clean bottom surface to be formed immediately by opening the M-shaped portion.

However, in a row packaging in which the side surface 2 of the packaging body 1 is bent into an M-shape, the lower end opening is folded into one side, and the lower end opening is closed with adhesive tape 9, the lower end corner 4 of the M-shaped bent side surface 2 is fixed. Diagonal folds 6, 6 reaching the depth of the M-shaped bent side surface 2 are made on the back plates 5, 5', and the triangular pieces 7, 7 created by the diagonal folds 6, 6 are formed into the M-shaped bent side surface. The gist of this is a row-mounted structure characterized by folding the inside of the 2.

In the figure, 8 is the bottom surface, and 9 is a fold provided in the front and back plates 5, 5' to easily form a square bottom when opened.

In this invention, as explained above, the M-shaped bent side surface 2 bends the triangular piece 7 created by the diagonal fold 6 into the side surface 2.

That is, if the corner portion 4 is folded so as to match the fold 2' of the M-shaped bent side surface 2 as shown in FIG. Hide inside.

Therefore, in this state, when the mouth of the bag is opened from the state shown in FIG. 1 and the M-shaped bent side surface 2 is extended, the triangular pieces 7, 7 will naturally expand to form a part of the bottom surface 8 as shown in FIG. This is 1
311, the bottom surface 8 is smooth and can be easily opened to form a square bottom.

Moreover, since the packaging body 1 stands as it is, there is no need to hold the bag by hand as in the conventional case, which has the advantage of significantly improving work efficiency.

In particular, the device of this invention is constructed by simply providing a triangular piece at the lower end of the M-shaped folded side and folding it inward of said side, so the structure is simple and can be easily applied to existing bags. .

[Brief explanation of drawings]

The drawing shows one embodiment of the array arrangement according to this invention.
Figure 1 is a front view, Figure 2 is a vertical perspective view taken along the line A-A in Figure 1, Figure 3 is a side view showing the state before the bottom corner is folded in, and Figure 4 is a side view showing the state before the bottom corner is folded in. FIG. 5 is a side view showing the state of use with the bottom open. 1-Main body, 2-M-shaped bent side, 3-Adhesive tape, 4
~ Bottom corner, 5, 5' ~ Front back plate, 6 ~ Diagonal fold, 7
~triangular piece.

Claims (1)

[Scope of utility model registration request] In a case where the side surface 2 of the main body 1 is folded into an M shape, the lower end opening is folded into one side, and the lower end opening is closed with adhesive tape 3, the front back plate 5, 5 is attached at the lower end corner 4 of the M-shaped bent side surface 2. ′
diagonal folds 6, 6 reaching the depth of the M-shaped folded side surface 2 are made on the side surface 2, and the triangular pieces 7, 7 created by the diagonal folds 6, 6 are formed.
is folded into the inside of the M-shaped bent side surface 2.