JPS63180543U - - Google Patents

Description

[Brief explanation of the drawing]

FIGS. 1A and 1B are explanatory diagrams showing an example of a pasting method for forming the bottom of a bag that has been widely used in the past; A is a one-time pasting, and FIG. 1B is a longitudinal cross-sectional view of each layer pasting. FIG. 2 shows a two-layer cylindrical body on the side where the vertical cylinder is attached, with the lower half omitted in both cases. Figure 3 is a diagram of the formation of the triangular folding piece, Figure 4 is a plan view of the reinforcing paper pasted to the opening in Figure 3, and Figure 5 is a diagram of the side wall of Figure 4 folded onto the reinforcing paper. Fig. 6a is a plan view of the completed reinforcing paper, b is a plan view showing another example, Fig. 7 is a plan view when decorative paper is pasted on the outer surface of the bag bottom, Fig. Figure 8 is an enlarged A-A' vertical section of the bag bottom, and the symbols in the figure are 1: cylindrical body, 2: horizontally glued, 3:
is the first fold line, 4 and 5 are the vertices, 6 and 7 are the triangular folded pieces, 8 is the opening, 9 and 10 are the second fold lines, and 11
, 12 is a side wall, 13 is a peeling material for opening, 14, 14
15 indicates the reinforcing paper, 16, 17 and 18 indicate the gluing, 19 and 19 indicate the cuts, and 20 indicates the decorative paper.

Claims (1)

[Scope of utility model registration request] Fold both sides of the multilayer paper tube inward to form an opening with a triangular folded piece, and paste reinforcing paper with an opening release material large enough to close the opening across both triangular folded pieces. Then, a side wall is laminated on the reinforcing paper without polymerizing to form a bottom, and a decorative paper is integrally laminated on the outer surface.