JPS5855144Y2 - A group of pleated flat bags with a flap at the opening. - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pleat-opening flat bag group devised to facilitate opening by providing a flap-like bent portion at the upper end of the opening of the child bag group.

Conventional pleated open-type flat bags (hereinafter referred to as open-type flat bags) have cut edges at the opening, making them difficult to open and reducing work efficiency when filling the bag with contents.

In order to improve this drawback, one of the openings was shifted,
A flat bag with a tongue is used, but by shifting one of the openings, the internal volume of the bag becomes narrower at the tongue.
This resulted in web diseconomies.

However, in the present invention, one of the upper ends of the opening is bent to form a flap without shifting one of the openings, so the web material is economical and the opening can be made easily.

That is, it has the advantages of the economical efficiency of an open-type flat bag and the ease of opening of a flat bag with a tongue, and eliminates the disadvantages of both.

The structure of an embodiment of the present invention will be described below with reference to the drawings.

Figure 1 shows the group of open-open flat bags of the present invention separated into individual parts.It is a continuous open-type flat bag with a fold at the bottom formed by a bar-like adhesive part 2 perpendicular to the flow direction. be.

In Fig. 2, both edges of the belt-like web are bent at the center so that their tips are in contact with each other, and the openings are folded together with the chive fold formed by the cross-shaped adhesive part 2 perpendicular to the flow direction as the bottom. This is a group of two open-type flat bags arranged facing each other.

Figure 3 shows two web strips superimposed in the flow direction, and the center bonded portion in the flow direction formed by the bonded portion 2 in the flow direction in the center and the bonded portion 2 perpendicular to the flow direction in the center portion in the flow direction. This is a group of open-type flat bags with two rows of bottoms and openings on opposite sides.

Reference numeral 1 is a flap with one of the openings bent, and reference numeral 4 is a perforation at the border of each flat bag, so that the bag can be easily separated into individual flat bags by hand when the bag is used.

As described above, the present invention has a flap with one side of the opening bent, making it easy to open and filling the contents efficiently. It is easy and has the effect that the web material is utilized most effectively.

[Brief explanation of the drawing]

FIG. 1 shows the group of open-open flat bags of the present invention separated into continuous open-type flat bags. Figure 2 shows a group of open flat bags with the folds of chives as the bottom, and Figure 3 shows a group of non-pleated open flat bags with a flap at the opening and the bottom is the adhesive part of the central part of the coast of Uniraf. FIG. 1... Flap, 2... Adhesive part, 3.
...Fold, 4...Perforation.

Claims (3)

[Scope of utility model registration request] (1) A continuous-opening flat bag in which the belt-like webs are overlapped and a bar-like adhesive part is provided at right angles to the flow direction of the webs to form a boundary between bags, and one side flap of the bag opening is bent outward. A group of pleated open flat bags having a flap at the opening, characterized in that the bags are formed in two rows. (2) A group of pleated open flat bags having a flap at the opening as set forth in claim 1 of the Utility Model Registration Claim, in which the openings of the bags are formed so as to face each other. (3) A group of pleated open flat bags having a flap at the opening as claimed in claim 1 of the Utility Model Registration Claim, in which the openings of the bags are formed so as to face opposite sides.