JPH0133477Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a packaging bag made of a synthetic resin film or the like.

(Prior art) As shown in FIGS. 4 and 5, conventional packaging bags have a front film portion 3 made of synthetic resin film or the like.
1, a back film part 32, and a gusset bottom part 33 bent so as to have a W-shaped side cross section. There is one in which both edges in the width direction are fixed to both edges of the gazette bottom 33, and the core plate material 35 allows the packaging bag to be stabilized and stand up on its own, making it easy to display. (For example, Utility Model Publication No. 55-6277).

(Problem to be solved by the invention) However, in this case, since the core plate material 35 is exposed to the outside, it looks unsightly, and external objects can easily get caught on the core plate material 35. There was a risk that the core plate material 35 would be damaged or unexpectedly come off from the bottom part 33 of the gusset. Moreover, when storing and packaging products etc. in the bag body 34, even if both ends of the core plate material 35 are held so as to be compressed, the core plate material 35 is simply
5 only swells back and forth, making it difficult to open the bottom part 33 of the gazette wide, and therefore, there is a problem in that products, etc. cannot be smoothly stored in the bag body 34.

In view of the above-mentioned problems, the present invention allows the bag body to stably stand up on its own without the fear that the core plate material will get caught on external objects and be damaged or come off from the bottom of the gusset. It is designed to provide good packaging and allow for smooth packaging of products, etc.

(Means for solving the problem) The technical means of the present invention for interpreting this technical problem consists of a front surface portion 1 and a back surface portion 2 that overlaps with the surface portion 1.
and a gusset bottom 3 that connects the lower ends of the front surface 1 and the back surface 2. 7 and are bent so that the side cross section is W-shaped and form a bag body 10 with an open top end. In the packaging bag, core plate materials 21 and 22 are superposed on the inner surfaces of both outer walls 4 and 5 of the gusset bottom 3 over substantially the entire length in the width direction.
are welded to the superposed outer walls 4, 5 over substantially the entire length in the width direction.

(Function) By pinching both side edges of the bottom part 3 of the gazette so that they are compressed, the core plates 21 and 22 can be swelled in an arcuate shape in the front and back direction so as to be spaced apart from each other, and at the same time, the outer walls 4 and 5 can also be made of the core plates. 21 and 22 so as to be spaced apart from each other in an arcuate manner outward, thereby allowing the bottom part 3 of the gusset to be easily and reliably opened wide. Also, core plate materials 21, 22
Since it is inside the bag body 10, there is no chance of external objects getting caught on it, and the core plate material 2
1 and 22 are superimposed on the outer walls 4 and 5 over substantially the entire length in the width direction, and the respective core plate materials 21 and 22 are welded to the superposed outer walls 4 and 5 over substantially the entire length in the width direction, The core plate materials 21 and 22 were fixed and integrated to the inner surfaces of the outer walls 4 and 5 over substantially the entire length in the width direction, and the core plate materials 21 and 22 were tightly superposed on the inner surfaces of the outer walls 4 and 5 over the entire length in the width direction. Since the bag body 10 can be maintained in the same state, the products and the like will not get caught on the core plates 21 and 22 when the products and the like are stored in the bag body 10.

Embodiment Hereinafter, the present invention will be explained according to the illustrated embodiment. In FIGS. 1 to 3, 1 is a surface portion, 2 is
3 is the back surface part, and 3 is the bottom part of the gusset. These are formed by bending and folding a synthetic resin film so that the side cross section forms a W shape at the lower side. The bottom part 3 of the gusset connects the lower ends of the front part 1 and the back part 2.
Furthermore, the gazette bottom 3 includes a pair of outer walls 4, 5 on the outer side in the front and back direction and a pair of inner walls 6, 7 on the inner side in the front and back direction.
It is bent so that the side cross section becomes W-shaped.

Both side edges 8 in the width direction of the front surface portion 1, back surface portion 2, and bottom portion 3 of the gazette are welded and fused, thereby forming a bag body 10 having an opening 9 at the upper end.

Reference numeral 13 denotes a sealing piece, which is integrally provided on the surface portion 1 and protrudes upward. Reference numeral 14 denotes a core plate material, which is made of a thick synthetic resin film or synthetic paper that can be mutually welded to the sealing piece 13, and is superimposed on the back side of the sealing piece 13, so that the upper and lower edges of the core plate material 14 are attached to the sealing piece 13. Welding 1
5,16. Reference numeral 17 denotes a pressure-sensitive adhesive layer section, which is provided on the back side of the upper edge of the sealing piece 13, and a release paper 18 is temporarily attached to the back side of the pressure-sensitive adhesive layer section 17. 19 is a fold line provided on the core plate material 14.

Numerals 21 and 22 are core plate materials, which are made of thick synthetic resin film or synthetic paper that can be mutually welded to the gusset bottom 3 in the same way as the core plate 14, and are provided on the inner surfaces of the outer walls 4 and 5 of the gusset bottom 3. The upper and lower edges of the outer wall 4,
5 are welded 23 and 24. In addition, core plate material 2
Both side edges 1 and 22 are welded and fused at the same time when the lateral edges 8 of the front and back surfaces 1 and 2 and the gusset bottom 3 are welded and fused.

(Effect of the invention) According to the invention, the core plate materials 21 and 22 are superimposed on the inner surfaces of both outer walls 4 and 5 of the gazette bottom 3 over substantially the entire length in the width direction, and each of the core plate materials 21 and 22 is Since the core plates 21 and 22 are welded to the superposed outer walls 4 and 5 over substantially the entire length in the width direction, the core plates 21 and 22 are fixed and integrated with the outer walls 4 and 5 over substantially the entire length in the width direction, The core plate materials 21 and 22 are attached to the outer walls 4 and 5.
Since the inner surface can be held in a tightly polymerized state over the entire length in the width direction, it is not only possible to make the packaging bag stable and stand up on its own, but also when storing and packaging products etc. inside the bag body 10. , by pinching both sides of the bottom part 3 of the gazette so as to compress it.
Together with the core plates 21 and 22, the outer walls 4 and 5 of the gusset bottom 3 are swollen in an arcuate manner in the front-rear direction so as to be spaced apart from each other, allowing the gusset bottom 3 to be opened wide, allowing products and the like to be easily and easily inserted into the bag body 10. It can be easily stored and packaged. In addition, when the bag 10 is not in use and does not contain any products, the inner walls 6 and 7 of the bottom part 3 of the gazette are held in a folded state by the pair of core plates 21 and 22, and
The bottom part 3 of the gazette can be reliably stored in a compact folded state, and is very convenient for storing and storing packaging bags. Moreover, the core plate materials 21 and 22 are the bag body 10.
It looks neat and looks very good because it is placed inside, and the external items are placed inside the core plate 2, unlike in the past.
There is no fear that the core plates 21, 22 will be damaged by getting caught on the gussets 1, 22, or that the core plates 21, 22 will accidentally come off from the gusset bottom 3. Further, as described above, the core plate materials 21 and 22 are fixedly integrated with the inner surfaces of the outer walls 4 and 5 over substantially the entire length in the width direction, and the core plate materials 21 and 22 are attached to the inner surfaces of the outer walls 4 and 5.
Since the inner surface can be held in a tightly overlapping state over the entire length in the width direction, there will be no inconvenience such as products etc. getting caught on the core plate materials 21, 22 when storing them in the bag body 10.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the present invention, with Figure 1 being a front view, Figure 2 being a sectional view taken along line A-A in Figure 1, and Figure 3 being a perspective view showing the packaged state. be.
4 and 5 show a conventional example, with FIG. 4 being a perspective view in the middle of assembly, and FIG. 5 being a perspective view in use. 1... Surface part, 2... Back part, 3... Gazette bottom, 4, 5... Outer wall, 6, 7... Inner wall, 8...
Both side edges, 9...Top opening, 10...Bag body, 21,
22...Core board material.

Claims (1)

[Scope of utility model registration request] a front surface portion 1; a back surface portion 2 superposed on the front surface portion 1;
The gusset bottom part 3 includes a pair of outer walls 4, 5 on the outer side in the front-back direction and a pair of inner walls 6, 7 on the inner side in the front-back direction. Both edges 8 in the width direction of the front surface portion 1, back surface portion 2, and bottom portion 3 of the gusset are welded together to form a bag body 10 which is bent so that the side cross section becomes W-shaped and whose upper end is open. In the fused packaging bag, both outer walls 4 of the gusset bottom 3,
A core plate material 2 is provided on each inner surface side of 5 over approximately the entire length in the width direction.
1 and 22 are polymerized, and each of the core plate materials 21 and 22 is welded to the polymerized outer walls 4 and 5 over substantially the entire length in the width direction.