JPH0613093Y2 - Packaging bag with bottom plate - Google Patents

Description

[Detailed description of the device] [Industrial applications]

TECHNICAL FIELD The present invention relates to a packaging bag with a bottom plate that facilitates the formation of the bottom of a packaging bag.

[Prior art and problems]

Bags are used for packaging various items. An example of the structure of a conventional packaging bag will be described with reference to FIGS. 1 and 3. In FIG. 1 and FIG. 3, the packaging bag 1
0 is a gusset 1 folded inward on both sides in the vertical direction
2, 12a are provided, and a sealing portion 15 is formed at the lower end by welding or the like. The upper portion of the packaging bag 10 is open and is folded inward by a predetermined width to form a reinforcing portion 19. The reinforcing portion 19 includes a cardboard 16 for reinforcement,
16a is sandwiched, and through holes are provided in the reinforcing portion 19 and the thick papers 16 and 16a, and the handles 18 and 18a are attached. If necessary, a rectangular bottom plate made of cardboard, plastic sheet, etc. is inserted into the packaging bag of this structure to provide a square bottom at the bottom to improve the opening of the mouth and facilitate the accommodation of contents. . The packaging bag is usually folded as shown in FIG. 1,
When using it, the bottom plate is pushed into the bottom of the packaging bag, but since it is in a folded state, the gusset folded inwards interferes and it is troublesome to make a square bottom at the bottom. There was a problem that it took time.

[Purpose of the present invention]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a packaging bag in which the bottom of a packaging bag is easily formed by opening an opening of the packaging bag and then inserting an item to be stored therein.

[Configuration of the present invention]

The structure of the present invention, which has been taken to solve the above problems and achieve the object, is as follows. That is, the present invention is provided with a gusset by folding both sides in the vertical direction inward.
The bottom bag includes a packaging bag having a sealing portion formed at a lower end thereof, and a bottom plate housed in the packaging bag. A bottom piece formed to have a length approximately twice the width, an insertion piece that is connected to the bottom piece, and is inserted into a bag formed on the bottom when the gusset of the packaging bag is opened. A folding curve provided at the boundary between the piece and the bottom piece, and the bottom plate is arranged between the side portion of the packaging bag and the gusset with the insertion piece facing the bottom side of the packaging bag. It is a packaging bag with a bottom plate that is housed. A tubular film is mainly used as a material for the packaging bag, and gussets folded inward are provided on both sides in the longitudinal direction. As a tubular film, a plastic film,
Examples thereof include kraft paper, a composite of these materials, and various bag materials made into a tube. A handle is attached to the opening as needed, and at that time, a reinforcing material is preferably provided from the viewpoint of strength. Paper, plastic plate, or the like is used as the material of the reinforcing material. The bottom plate has a hardness capable of forming a square bottom, and cardboard, a plastic sheet or the like is used. Depending on the items to be stored, such as beverage cans, a lid integral with the reinforcing material may be provided to close part or all of the opening of the packaging bag to prevent dust from adhering to the contents or contents. Can be prevented.

【Example】

The present invention will be described in more detail based on the embodiments shown in the drawings. FIG. 1 is a front view of an embodiment showing a folded state, and FIG.
FIG. 3 is a perspective view showing a state in which the opening is half opened, and FIG. 3 is a partially cutaway perspective view showing a state in which the opening is fully opened and a square bottom is formed. A transparent plastic film having appropriate flexibility and strength is used for the packaging bag 10, and gussets 12 and 12a are provided on both sides in the vertical direction by being folded inward. Further, a sealing portion 15 is formed on the lower end portion by welding. An opening 13 is provided in the upper part of the packaging bag 10, and the edge of the opening 13 is folded inward by a predetermined width to form a reinforcing portion 19. Cardboard 1 is reinforced
6, 16a are sandwiched between the reinforcing portion 19 and the cardboard 16, 16
A handle is provided with a through hole in a. A bottom plate 20 is housed between the side portion 11 of the packaging bag 10 and the gussets 12 and 12a. The bottom plate 20 is made of cardboard, and its outer shape is slightly narrower in width than the packaging bag 10 and its length is gazettes 12 and 12a.
Is formed to be approximately three times as long as the folding width a. A folding curve 21 is provided in parallel with the lower end 20a at a position above the lower end 20a of the bottom plate 20 by a gusset folding width a. The lower one-third portion from the folding curve 21 is an insertion piece 22, which is inserted and fixed to one side of a bag portion 17 formed at the bottom of the packaging bag 10 when the gussets 12 and 12a are opened. It is the part that Further, the upper two-thirds portion from the folding curve is a bottom piece 23 having a vertical length corresponding to twice the gusset folding width.
The bottom piece 23 corresponds to the mouth width of the packaging bag 10 when the gussets 12 and 12a are opened, and is a portion that substantially becomes a bottom plate by bending along the folding curve 21. The upper corner portion 24 and the lower corner portion 25 of the bottom plate 20 are formed in a curved shape so that the folding operation in the packaging bag 10 can be performed smoothly without damaging the packaging bag 10. (Operation) The operation of this embodiment will be described with reference to FIGS. 1 to 3. Before use, as shown in FIG. 1, the bottom plate 20 is the packaging bag 1
It is housed between the side part 0 of 0 and the gusset 12, 12a. In use, when the opening 13 is opened as shown in FIG. 2, a triangular bag portion 17 is formed on the sealing portion 15 of the packaging bag 10, and the lower corner portion 25 of the bottom plate 20 is located in the bag portion 17. Inserted and fixed inside. Then, put your hand in the packaging bag 10 and bend the bottom plate 20 from the folding line 21,
As shown in FIG. 3, a square bottom is formed on the bottom of the packaging bag 10. Thus, from the viewpoint of bending the bottom plate 20 from the folding curve 21, if the folding curve 21 is bent or biased in the folding direction, the bottom plate 20 bends when the opening 13 is opened. As a result, it is easy to form the square bottom. When the square bottom is formed, since the lower corner portion 25 of the bottom plate 20 is inserted and fixed in the bag portion 17, the bottom plate 20 does not fall from the packaging bag 10 even if it is upside down. Further, at this time, the bottom plate 20 is formed to have a vertical length approximately three times as long as the gusset folding width, and the folding curve 21 is provided at a position ⅓ from the lower edge part, so that the lower edge part of the bottom plate 20 is packed in advance. When the bag is brought into contact with the inner bottom portion of the bag, the position of the bottom plate 20 is automatically determined to the position corresponding to the opening portion 13 when the bag is folded along the folding line 21. The present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the claims for utility model registration.

[Effect of device]

The present invention has the above configuration, and by opening the gusset,
The opening is formed and the bottom having a width twice as long as the gusset folding width is formed. Further, a triangular bag portion is formed on the sealing portion of the packaging bag, and the lower corner of the bottom piece of the bottom plate is inserted and fixed in the bag portion. That is, by making the length of the bottom piece approximately twice as long as the gusset folding width, by bending the bottom plate in a folding curve, it is possible to easily form a square bottom having substantially the same shape as the opening at the bottom of the packaging bag. it can. Therefore, it is convenient to take out the rectangular bottom plate housed in the packaging bag and insert the rectangular bottom plate again into the packaging bag to form a square bottom, which is convenient.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment showing a folded state, FIG. 2 is a perspective view showing a state in which the opening is half opened, and FIG. 3 is a state in which the opening is fully opened and a square bottom is formed. It is a partially notched perspective view shown. 10: Packaging bag 12, 12a: Gazette 15: Sealing part 20: Bottom plate 21: Folding curve 22: Insert piece 23: Bottom piece

Claims (1)

[Scope of utility model registration request] 1. A packaging bag having a gusset provided by folding both sides in the vertical direction inward, and a sealing portion formed at a lower end portion; and a bottom plate accommodated in the packaging bag, The bottom plate is formed so that the horizontal length is slightly narrower than that of the packaging bag and the vertical length is approximately twice the width of the gusset folding width. And a folding curve provided at a boundary between the insertion piece and the bottom piece, wherein the bottom plate includes the insertion piece and the packaging bag. A packaging bag with a bottom plate, which is housed between the side portion of the packaging bag and the gusset toward the bottom side of the packaging bag.