Foldable Bag

Abstract

A foldable bag, made of a flexible sheet or board like material having a plurality of fold lines, includes a bottom wall, two side walls respectively connected to two opposite sides of the bottom wall, and two connecting walls respectively connected with the side walls and the bottom wall to define a containing space therein. The side wall has a first fold line parallel to the bottom wall and is capable of being folded towards the center of the foldable bag. The connecting wall has two second fold lines respectively extended along the diagonal lines and intersected with each other, and a third fold line parallel to the bottom wall and extended through the intersection point of the two second lines, wherein the ends of the third fold line are connected to the respective ends of the first fold lines, wherein the second fold lines and the third fold lines are capable of being folded toward the center of the foldable bag.

Description

BACKGROUND OF THE PRESENT INVENTION[0001]1. Field of Invention[0002]The present invention relates to a foldable bag, and more particular to a foldable bag which can be used as a shopping bag that is capable of folding up to reduce its size when it is not used for ease of carrying and reused.[0003]2. Description of Related Arts[0004]In 1870, an American, Margaret Knight, invented a kind of Kraft paper shopping bag with flat bottom. Before that, people generally used paper to wrap or a kind of cloth made bag for shopping instead of paper bag. After Margaret Knight designed such auto-foldable Kraft paper bag with flat bottom, the automate manufacturing machine for Kraft paper bag production, and founded the East Paper Bag Corporation, the flat bottom Kraft paper shopping bag is widely used by people for shopping. Thereafter, due to the invention of the plastic bag, this kind of Kraft paper shopping bag is gradually replaced with by plastic bag. However, due to the recent promotion of e...

AI Technical Summary

Benefits of technology

[0006]An object of the present invention is to provide a foldable bag to overcome the shortcomings of the conventional paper bag, such as not durable for repeatedly used and folding up for storage, resulting in the increased amount of the paper bags being used.

[0007]Another object of the present invention is to provide a foldable bag which is convenient in carrying along and can be used repeatedly.

[0010]Each of the side walls has a first fold line which is parallel to the bottom wall and capable of being folded towards the center of the foldable bag. Each of the connecting walls has two second fold lines and a third fold line, wherein the two second fold lines are extending and intersecting along the two diagonal lines of the respective connecting wall and the third fold line is extended through the intersection point of the two second lines and in parallel to the bottom wall while the two ends of the third fold line are respectively connected to the respective ends of the two first fold lines and the second fold lines and the third fold lines are capable of being folded toward the center of the foldable bag. Thereby, the side walls and the connecting walls are capable of folding along the first fold lines, the second fold lines and the third fold lines to fold up the foldable bag to reduce its size to a compact size in convenient for carrying and repeatedly use.

[0014]In one embodiment of the present invention, the foldable bag further comprises an outer case attached to the bottom wall for receiving the folded foldable bag therein. The outer case further has at least a seventh fold line. The outer case may further comprises at least one set of elements for buttoning, hooking, locking, adhering, bonding or binding up, thereby the free edges of the outer case could be fastened up to prevent the foldable bag contained therein from unfolding.

[0015]In one embodiment of the present invention, each of the two side walls has a through hole provided adjacent to and along an upper edge thereof to function as a handle. Furthermore, the portions between the upper edges of the two side walls and the through holes could be folded up to increase its thickness around the through holes, wherein the folded-up portions could be buttoned up, hooked up, locked up, bonded up or bound up to strengthen the supporting ability of the area around the through holes as a handle.

[0019]Accordingly, the foldable bag of the present invention can be unfolded to form a bag, which is similar to the commonly used pager bag, to provide a containing space for storing objects, such as beverages, breads, cakes and so on. As the foldable bag has handles provided on the top, it is very convenient for carrying the foldable bag along. The foldable bag could be folded into a flat piece which is able to be enclosed by the outer case attached to the bottom of the bag body. The outer case would be fastened by the outer case locker, thereby the foldable bag could be folded up to form a flat body like a notebook. Hence, the foldable bag is beautiful and very convenient to be carried along.

Problems solved by technology

However, due to the recent promotion of environmental protection, the plastic bag becomes unpopular due to its difficulty in decomposition after used.

Since the Kraft paper shopping bag is generally thin and limited in designable shape, the Kraft paper shopping bag is not that durable and reusable after repeatedly folding up for storage.

Therefore, it is not portable and may not be repeatedly used again and again.

In addition, the Kraft paper shopping bag is made from a raw material produced from the woods and trees, so that another environmental problem arises according to the increased the amount of the Kraft paper shopping bags being used.

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