The present invention relates generally to a bulk bag having self-standing loops. More particularly, the present invention relates to a bulk bag having self-standing loops, wherein the loops are configured to flexibly stand upright by themselves upon unstacking of the bulk bag.
As well known in the art, a bulk bag is a large bag that is used to load and transport various types of bulk products such as fertilizers, grains, minerals, and compounds, and is also known as a flexible intermediate bulk container (FIBC), a ton bag, a big bag, a super bag, etc.
Such a bulk bag, which is currently on the market, is made from a flexible material such as fabric, etc. and is configured with loops secured to a side portion of a body thereof. The bulk bag allows a forklift operator to insert forklift forks into the loops so as to be lifted thereby.
Meanwhile, the loops are also made from fabric and thus tend to sag down or folded over on themselves. Accordingly, it requires much manual work in order to insert or release the forklift forks into or from the loops, causing work accidents to occur often.
Thus, in an effort to solve such a problem, Korean Utility Model Application Publication No. 20-2011-0008890 (hereinafter referred to as “cited invention”) disclosed “Ton bag”.
As shown in
However, in order to commercialize the cited invention, it is necessary to develop a seam material exerting sufficient elastic and restoring force. However, in view of the fact that the tone bag having existing problems is used, the flexible seam material 30 to be applied to the cited invention may not easy to develop.
In particular, the above-mentioned cited invention is characterized in that the loop means 20 having the elastic seam material 30 therein is secured to the body 10 in a manner that a portion of the loop means 20 that is in contact with the body 10 is entirely sewn to define the lower sewing strap 22. Thus, there is a problem in that when multiple cited inventions are stacked and then are unstacked, the multiple loop means 20 may not be properly erected from a folded position to an upright position.
More specifically, when the body 10, which is not fully filled with contents, is stacked with another body 10 thereon, the body 10 positioned lower is generally made from PP-cloth or a stiff fabric and thus is stacked in a manner that an upper portion of the body 10 positioned lower and a portion of the loop means 20 secured thereto are folded together inwardly. Thus, upon unstacking of the bodies, the body 10 having no elastic force may remain wrinkled and folded, and the loop means 20 may not be properly erected from a folded position to an upright position due to the weight of the fabric constituting the body 10 or the loop means 20.
Accordingly, the present invention has been made keeping in mind the above problems occurring in the related art, and an objective of the present invention is to provide a bulk bag having self-standing loops, wherein the loops are configured to flexibly stand upright by themselves from a folded position upon unstacking of the bulk bag.
In order to accomplish the above objective, the present invention provides a bulk bag having self-standing loops, the bulk bag being configured with a bag-shaped body having a reversed “U”-shaped loop protruding upwardly from an outside thereof, wherein the loop is coupled to the body at a position spaced downwardly apart from a top edge of the body by a predetermined distance, the loop having an air tube having a predetermined length and coupled to an outside of the loop. The loop is configured with a semicircular arc-shaped hook portion and “I”-shaped supporting portions respectively extending from opposite ends of the hook portion, and the air tube is coupled with the hook portion and an at least one supporting portion and is heat-treated and flexibly bent at a portion corresponding to a boundary point between the hook portion and the supporting portion.
According to the present invention, the air tube is coupled to the loop of the bulk bag and thus provides self-standing ability to the loop, thereby ensuring convenience and safety of work, as well as being commercially available immediately. Furthermore, the loop is coupled to the body such that the loop has a portion that extends from the top edge of the body by a predetermined distance, whereby when multiple bulk bags, which are not fully filled with contents, are stacked and then are unstacked, the loop can flexibly stand upright separately from the bulk bags that are in a folded position, leading to an improvement in efficiency of work.
In the present invention, there is provided a bulk bag having self-standing loops, the bulk bag being configured with a bag-shaped body having a reversed “U”-shaped loop protruding upwardly from an outside thereof and configured to flexibly stand upright by itself from a folded position upon unstacking of bodies, wherein the loop is coupled to the body at a position spaced downwardly apart from a top edge of the body by a predetermined distance, the loop having an air tube having a predetermined length and coupled to an outside of the loop. The loop is configured with a semicircular arc-shaped hook portion and “I”-shaped supporting portions respectively extending from opposite ends of the hook portion, and the air tube is coupled with the hook portion and an at least one supporting portion and is heat-treated and flexibly bent at a portion corresponding to a boundary point between the hook portion and the supporting portion.
The scope of the present invention is not limited to the following embodiments and various changes and modifications from the spirit of the present invention defined in the following claims by those skilled in the art are also included in the scope of the present invention.
Hereinafter, a bulk bag having self-standing loops according to the present invention will be described in detail with reference to
As shown in
The body 100 has a reversed “U”-shaped loop protruding upwardly from an outside of the body 100, and multiple loops 200 are arranged along a side portion of the body 100. The forks of a forklift are inserted into the loops 200 protruding from the body 100 to transport the body 100. Furthermore, it is preferable that the multiple loops 200 are arranged along the side portion of the body 100 at respective positions corresponding to each other such that the body 100 is transported stably.
The loop has an air tube 300 having a predetermined length and coupled to an outside of the loop 200. The air tube 300 may have a structure capable of injecting or discharging air by a user. The air tube 300 in which the air has been injected allows the loop 200 to stand upright, so that as shown in
In particular, in the present invention, as shown in
As an example, as shown in
Meanwhile, the air tube 300 may be comprised of a single tube. However, as shown in
The air tube 300 may have an air injection portion 340 allowing air to be injected into the tubes 330. Although not shown in the drawings, a valve provided at each of the multiple tubes 330 communicates with the air injection portion 340 such that air is injected into the multiple tubes 300 through the air injection portion 340, and air pressure is adjusted to adjust a supporting force for the loop 200. Furthermore, although not shown in the drawings, the air tube 300 may have an air generating member provided therein, and the air generating member generates air due to a chemical reaction. Accordingly, the air tube 300 having no air injected thereinto is coupled to the loop 200, and then the air generating member is manipulated for air injection.
Meanwhile, as shown in
Furthermore, as shown in
Meanwhile, as shown in
First, as shown in
As shown in
Furthermore, as shown in
Meanwhile, the body 100 may have at least one guide strip 110 at a portion thereof where the loop 200 is coupled thereto, the guide strip having a predetermined length and being coupled at opposite ends thereof to the body 100 so as to enclose the loop 200 and the air tube 300. In particular, the guide strip 110 may be provided at an upper side of the portion of the body where the loop 200 is coupled thereto, that is, at an upper side of the fixed portion 200b, and serves to allow the air tube 300 and the loop 200 to be firmly secured without loosening and thus enhances self-standing ability of the loop 200 obtained from the air tube 300. In addition, the guide strip 110 serves to guide an operator to fill the bag with contents to at least the portion where the guide strip is provided such that the loops 200 can most effectively stand upright from a folded position upon unstacking of the multiple bodies 100.
Meanwhile, as shown in
As an example, when the body 100 is moved, auxiliary loops 400 as shown in
As another example, auxiliary loops 400 as shown in
Filing Document | Filing Date | Country | Kind |
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PCT/KR2016/015030 | 12/21/2016 | WO | 00 |