JPS5837802Y2 - Free standing bag with filter - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of a self-supporting bag, in which the bag has a filter function so that only the desired solution can be taken out and unnecessary substances can be left inside the bag.

That is, it is composed of two body walls that face each other and a bottom part that is connected to the body walls and is folded to form a W cross section by two outward fold lines centered on the inward fold line. This self-supporting bag has both ends glued to the wall and bottom, and is characterized by a structure in which a filter with a square cross section is glued to the body wall.

The embodiments shown in the drawings will be described below.

First, to explain the main body of the self-supporting bag, a packaging material 1 having a heat-sealing layer on the inner surface is folded to form a W cross section by two outer fold lines 3 and 4 centered on an inner fold line 2. Both ends 1a and lb of the folded packaging material 1 are adhered to the trunk wall 6 and the bottom part 5 with the same width, and the bottom parts 5 at both ends of the inward fold line 2 are bonded to each other. Line-shaped and inverted U-shaped notches 7 and 8 are formed, and the trunk walls are bonded to each other at these portions.

Both ends of the bottom portion 5 corresponding to the notches 7 and 8 are adhered to the body walls 6 and 6 on the inner surface, but are not adhered to the outer surface because a packaging material not suitable for heat sealing is used.

The main body of the bag as described above has the body wall 6 at the cutout portions 7 and 8.
, 6 are glued together, so the bag is stable when it stands on its own.

By the way, as described above, the packaging material 1 has a heat-sealing layer on its inner surface, and its material is laminated material such as polyamide, polyester, polypropylene, polyethylene, aluminum foil, etc. 5 is described as being integral with the trunk wall 6.6, but it may be a separate body.

This project consists of a bag-based filter 9 with a V-shaped cross section.
is glued to the trunk walls 6, 6.

The illustrated filter 9 is adhered to both ends 1a and 1b of the packaging material 1 and is adhered to the inner surfaces of the body walls 6 and 6.

The material used for the filter is perforated polyethylene, perforated polypropylene, paper alone, or a laminate of paper and perforated polyethylene or perforated polypropylene.

In order to fill the bag with the contents, the body wall 6.6 must be filled in advance.
An unsealed portion 1a' is left at one sealed portion where both ends 1a and lb are bonded together.

Depending on the amount of filling, the upper end 10 of the bag is also sealed.

Therefore, the material to be filtered, such as powder or granules, is put into the unsealed part la', and then water and alcohol are added, and then the unsealed part la' is sealed.

If the amount of liquid is large and sealing is difficult, only the solid material is introduced from the unsealed portion 1a' and sealed, and the liquid is filled from the upper end 10 of the bag and the opening at the upper end of the bag is sealed.

After filling, treatment is carried out depending on the purpose, such as boiling, retorting, or long-term storage. When needed, the seal at the top of the bag, for example, part 11 of 1a, is opened, and the desired liquid is taken out from the opening 11.

Then, the solid matter and powder are left in the main body of the bag by the filter 9.

As described above, the present invention is characterized in that only the desired liquid can be taken out because the self-supporting bag has a filter function.

Moreover, since it is a self-supporting bag, it can be displayed standing up in a showcase or the like, which provides a display effect, and it also has the feature that it can be easily treated according to the purpose.

[Brief explanation of the drawing]

Figure 1 is a developed view of the self-supporting bag without the filter, Figure 2 is a cross-sectional view showing the top end of the self-supporting bag opened, and Figure 3 is before the self-supporting bag is filled with the contents. FIG. 4 is a front view showing the state, and FIG. 4 is a slope view of the same. 1... Packaging material, la, lb... Both ends of packaging material, 2... Inner fold line, 3, 4... Outer fold line, 5 ...Bottom, 6...Body wall, 7
．． 8...notch, 9...filter,
10...Top edge of the bag.

Claims (1)

[Scope of utility model registration request] Consisting of two body walls facing each other and a bottom part connected to the body walls and folded to form a W cross section by two outward fold lines centered on the inward fold line, the body wall and the bottom part A structure in which a filter with a ■-shaped cross section is glued to the body wall of a self-supporting bag with both ends glued together.