JPH027803Y2 - - Google Patents

Description

[Detailed description of the invention] <Field of industrial application> The present invention relates to a standing pouch, and more specifically to a standing pouch suitable for contents that generate liquid or gas during packaging, such as raw shiitake mushrooms. .

<Conventional technology> Traditionally, self-supporting bags or standing bags have been used.
Packaging bags, also known as pouches, are known as bags that can stand upright and are easy to see at stores.

However, liquids such as fresh shiitake mushrooms may be present in the packaging.
In the case of contents that generate gas, it is necessary to quickly remove the generated liquid or gas from inside the packaging bag. There is no known packaging of these using bags.

<Problems to be Solved by the Invention> An object of the invention is to provide a self-supporting bag that can quickly discharge and remove liquid such as moisture or gas from inside the packaging bag.

<Means for solving the problem> The present invention consists of a front sheet and a back sheet whose inner surfaces are thermally adhesive, and which are folded in half with the inner layer being thermally adhesive and the outer layer being non-adhesive. The front sheet, the back sheet, and the bottom sheet are sealed at their lowest parts to form a lower seal line, and the sides are sealed with a partially unsealed part near the top end. to form a side seal line, and furthermore, to protect the corner where the lower seal line and the side seal line intersect, a diagonal seal line with a partially non-sealed part is provided, and the side part of the bottom sheet is It is a self-supporting bag that allows internal gas or liquid to be discharged to the outside by partially removing the outer layer and sealing the exposed inner layers.

<Function> In the present invention, the non-sealed portions provided on the side seal line and the diagonal seal line serve as discharge paths for internal liquid and gas. Liquids and gases first pass through the unsealed portion of the diagonal seal line, then pass through the diagonal seal line,
It is discharged into a substantially triangular space surrounded by the side seal line and the lower seal line. Further, gas is discharged out of the bag from the non-sealed portion of the side seal line.

<Example> The present invention will be described below with reference to the drawings. The drawings all show embodiments of the present invention; Fig. 1 is an explanatory diagram showing each sheet of the present invention; Fig. 2 is an explanatory diagram of a self-supporting bag with each sheet of Fig. 1 sealed; Figures A and B are explanatory diagrams showing the relationship between the seal portion and the liquid or gas discharge path.

That is, as shown in FIG. 1, the self-supporting bag of the present invention consists of a front sheet 2, a back sheet 3, and a bottom sheet 1 interposed between the two and folded in two. Any of these sheets may be a flexible plastic film, but the inner surface of the bottom sheet 1 is thermally adhesive and the outer surface is non-adhesive.
Note that the inner surface here refers to the surface that becomes the inner surface of the bag when it is formed, and is the surface that faces outward when it is folded in half. The outer layer of the bottom sheet 1 has been removed from a portion of its side, thereby exposing the heat-adhesive interior. This exposed part is 1 in Figure 1.
It is numbered 1.

These three sheets are sealed together in place to form a bag. This bag has the shape shown in FIG.

The seal portion is shown in Figure 3 A and B. That is, in Fig. 3A, the sealed portions of the bottom sheet 1 and the front sheet 2, the sealed portions of the bottom sheet 1 and the back sheet 3, and the sealed portions of the front sheet 2 and the back sheet 3 are indicated by diagonal lines upward to the right. As shown, the bottom sheet 1 and the front sheet 2 are sealed on both sides, and a side seal line 12 is formed between the bottom sheet 1 and the front sheet 2.
A is sealed at the lowest part to form a lower seal line 12b, and a diagonal seal line 12c is provided to protect the side seal line 12a and the lower seal line 12b from the contents, and a diagonal seal line 12c is provided for reinforcement. A seal line is provided that connects the seal line 12c and the lower seal line 12b. The bottom sheet 1 and the back seal 3 are also sealed at corresponding positions.

The diagonal seal lines 12c and 13c are not completely connected, but have a non-sealed portion x at a portion thereof, and liquid and gas are discharged from this non-sealed portion x.

The discharged liquid or gas will pass through this diagonal seal line 1.
2c, 13c, lower seal lines 12b, 13b, and side seal lines 12a, 13a, but these lower seal lines 12b, 13b and side seal lines 12a, 13a are completely connected. At certain times, neither liquid nor gas is discharged from this space, so a non-sealed portion y is provided relatively above the side seal lines 12a, 13a, as shown by y in FIG. The liquid is contained in this space to prevent it from being discharged outside the bag. This way you won't stain the display stand where the bags are placed.

Note that the seal portions 23a of the front sheet 2 and the back sheet 3 are only on the sides where the bottom sheet 1 does not exist, and the side seal lines 12a, 13
It is an extension of a. Of course, the opening is sealed after the contents are contained.

Further, as shown in FIG. 3B, the two folded bottom sheets 1 are sealed together at a portion 11 where the outer layer is removed and the inner layer is exposed.

<Effects of the invention> The present invention has the above-mentioned structure, and makes it possible to discharge the liquid and gas inside without damaging the external shape of the conventionally known self-supporting bag. It is ideal as a packaging bag for contents that generate moisture or gas. Furthermore, the discharged liquid collects in the approximately triangular space and is not directly discharged to the outside of the bag, so it does not stain the stand on which the self-supporting bag is displayed.

[Brief explanation of the drawing]

The drawings all show embodiments of the present invention, and Figure 1 is an explanatory diagram showing each sheet of the present invention, and Figure 2 is an explanatory diagram showing each sheet of the present invention.
The figure is an explanatory diagram of a self-supporting bag in which each of the sheets in FIG. 1 is sealed, and FIGS. 3A and 3B are explanatory diagrams showing the relationship between the sealed portion and the liquid or gas discharge path. 1...Bottom sheet, 2...Front sheet, 3...
...Back sheet, 12a, 12b, 12c... Seal portion of bottom sheet 1 and front sheet 2, 13
a, 13b, 13c... Sealed portion between the bottom sheet 1 and back sheet 3, 11a... Sealed portion between the bottom sheets, x, y... Non-sealed portion.

Claims (1)

[Claims for Utility Model Registration] A front sheet and a back sheet whose inner surfaces are heat-adhesive, and a bottom sheet which is interposed between the two and folded in half and whose inner layer is heat-adhesive and whose outer layer is non-adhesive. The sheet, the back sheet, and the bottom sheet are sealed at their lowest parts to form a lower seal line, and the sides are sealed with a partially non-sealed part near the upper end to form a side seal line. A diagonal seal line with a partially non-sealed part is provided to protect the corner where the lower seal line and the side seal line intersect. A self-supporting bag made by removing the outer layer and sealing the exposed inner layer.