Bag structure

Abstract

The present invention is related to a bag structure. The bag structure comprises a front panel, two lateral panels, a bottom panel, and a rear panel, and all panels join together to form the bag. Two lateral edges of the bottom panel have an extension flap for joining to the lateral panel, respectively, and a valley fold portion is between the bottom panel and the extension flap. After the bag structure is folded, the bag structure has a one-piece bottom and the flat front and rear panels, thereby having attractive appearance and strong structure and being flat when stacked.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates a bag structure. More particularly, a bag structure has a flat outward facing surface for showing advertisements perfectly with closed bottom after the bag structure is folded and collapsed.[0003]2. Description of Related Art[0004]In daily shopping, salesclerk usually delivers the goods to a consumer with a free convenient handbag. According to different material, the handbag is divided into plastic bag and paper bag. However, after use, discarding plastic bags become trash and are difficult to process. Furthermore, when the high quality goods are put into the plastic bag, it feels that they seem to lose their value. Therefore, the salesclerk provides a free paper handbag with advertisements printed on the outward facing surface.[0005]Please refer to FIG. 7. FIG. 7 is a diagram of a most common used handbag 7 of prior art. The handbag 7 comprises a rectangular front sheet 71 and back sheet ...

AI Technical Summary

Benefits of technology

This patent describes a bag structure that can be folded flat for easy storage. It consists of a front panel, two lateral panels, a bottom panel and a rear panel that join together to form the bag. The bottom panel has two lateral edges with an extension flap for joining to the lateral panel, and there is a valley fold portion between the bottom panel and the extension flap. The bag structure has a one-piece bottom and the front and rear panels are flat when folded, making it easy to stack and convenient to use.

Problems solved by technology

However, after use, discarding plastic bags become trash and are difficult to process.

Furthermore, when the high quality goods are put into the plastic bag, it feels that they seem to lose their value.

However, the bag described above has some disadvantages described below.1. Because the bottom is folded to the back of the bag so that the bottom is thicker than the opening in collapsed state.

Therefore, when the bags are collapsed and stacked, the stacked bags is not flat and is in an inclined state.2. When the advertisements are printed on the front and back sheets, the advertisements printed on the back sheet are not attractive because of the crease for folding the bottom to the back of the bag.3. In general, when the goods are put in the bag, the weight of the goods is mainly supported by the bottom of the bag.

However, the bottom of the traditional handbag is not integrated with the front and back sheets when the folded structure of the traditional handbag is formed in the stereoscopic state.

The bottom of the traditional handbag is formed by folding the flaps extending from the front, back, and lateral sheets and gluing flaps together by adhesive, thus the weight supporting limit of the bottom is decreased to result that the bottom unexpectedly breaks as the goods in the bag.

Moreover, uncertain adhesion due to human factors in gluing process may cause the problem that the bottom can not support the weight of the goods.

However, the bottom of the foregoing structure is still formed by adhesion; the problem of decrease of the weight supporting limit of the bottom as the foregoing third point described also exists.

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