JPS5839707B2 - sealed bag - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention involves attaching a cut tape to the inner surface of the innermost layer of a cylindrical bag with a stair case, and extending one end of the tape from the vertical edge of the inner layer of the inner layer to the vertical edge of the outer layer of the outer layer. To obtain a heavy-duty packaging bag that is inserted into the stair body affixing part along its edges and supported at one end by each stairway adhesive, and which can be easily torn open at right angles to the body affixed part. This is what we are trying to do.

To explain the embodiment of the present invention shown in the drawings, both sides of a plurality of layers L2 and 3 having the same width are staggered and folded into a cylinder shape, and glue 4 and 5 are applied to each of the facing step portions 1' and 7.3'. .6
The stair case parts are bonded to each other to form the stair body pasting part 7, and the cylindrical bag 8 is manufactured.

At that time, a double-sided sharp tape made of non-stretchable synthetic resin, that is, a cut tape 9 is applied to the inner surface of the innermost layer 3 in a direction perpendicular to the stair body pasting part 7.
The tape 9 is pasted with adhesive 10, and the ten ends of the tape 9 are pasted on the stair case from the inner layer 3's inner layer 3 vertical edge 1'' to the outer layer 1's outer layer 1 vertical edge 1''. 7, support the above one end part by each step adhesive (glue) 4, 5°6, and attach the edge 9'' of the same end part to FIGS. 1 to 3, 6 and 7.
As shown in FIGS. 10 and 11, there is no knob 11 protruding outward from the vertical edge 1'' of the external body panel, or as shown in FIG. 4,
As shown in Figures 5, 8 and 9, the vertical edge 1''
Align and shape the notches 12 and 12 to make 11.

The cuts 12.12 are made in each layer L2 as shown in FIGS. 4 and 5.
, 3 can be provided on the vertical edges.

The other edge of the cut tape 9 is aligned with the vertical edge 3'' of the inner body panel as shown in FIG.

In the figure, 13 indicates perforations formed along both sides of the cut tape 9, 14 indicates interlayer adhesive glue applied along both sides of the cut tape 90, and 15 indicates the innermost layer 3 along both sides of the cut tape 9. This is a tear guiding adhesive applied to the surface.

Therefore, in the multi-layer packaging double-bottomed paper bag shown in FIG. 1, when the bag 11 is grasped and the cut tape 9 is pulled to the left in the figure, the outermost layer 1 is first removed as shown in FIG. The tape 9 is torn by the sharp edges on both sides, and the two layers are torn in sequence, and the innermost layer 3 is torn, and multiple layers (three layers) 1, 2 are torn.
．． 3 are torn at the same time by the sharp lines on both sides of the tape 9, and the body of the sealed paper bag can be separated into upper and lower parts by the tape 9.

Since the present invention is configured as described above, there is an effect that the body of a multi-layer packaging sealed bag can be easily torn open, which has been considered extremely difficult in the past.

Conventionally, the sewn part of a sewing machine bag could be opened by pulling out the sewing machine string, but the contents leaked through the perforations and the bag was not sealed, so the sewn part was sealed with duct tape, making it impossible to pull out the sewing machine string. became.

However, in the present invention, even if the sewing machine bag is sealed with adhesive tape to form a sealed bag, the body of the sealed bag can be easily cut open.

[Brief explanation of drawings]

Fig. 1 is a front view showing the sealed bag of the present invention, Fig. 2 is a cross-sectional view taken along line A-A in Fig. 1, Fig. 3 is a partially enlarged view of Fig. 2, and Fig. 4 is an enlarged view of the knob. Front view, Figure 5 is a back view of Figure 4, Figure 6 is an enlarged front view of one honey, Figure 7 is a back view of Figure 6, Figure 8 is an enlarged front view of one honey. Figure 9 is a back view of Figure 8, Figure 10 is an enlarged front view of the hatch, Figure 11 is a back view of Figure 10, and Figure 12 is a vertical sectional view taken along line B-B in Figure 10. . 8... Tubular bag with stair case attached, 9... Cut tape, g.
... End, 3... Innermost layer, 3''... Vertical edge of internal trunk attachment,
1...Outermost layer, 1''...Vertical edge of external body lining, 7...Staircase cladding part, 4゜5.6...Adhesive for each staircase.

Claims (1)

[Scope of Claims] 1. Stick tape 9 on the inner surface of the innermost layer of the stair case lining cylindrical bag 8, and extend one end 9' of the tape 9 from the vertical edge 3'' of the innermost layer 3 to the outermost layer 1. The sealed bag is inserted into the stair case part 7 over the vertical edge 1'' of the external case part adhesion, and the one end part 9' is supported by each step adhesive 4, 5, 6. 2. The sealed bag according to claim 1, wherein the cut tape 9 is a double-sided sharp tape made of non-stretchable synthetic resin.