Patent Application
20150166259
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1. Field of the Invention
The present invention relates to a big bag to be used in transportation, packaging and stacking of granular, powder or fluid products.
2. Description of Related Art Including Information Disclosed Under 37 CFR 1.97 and 37 CFR 1.98.
Flexible intermediate bulk containers (FIBC), also referred to as big bags or bulk bags, are flexible containers for transportation of granular, powder or fluid products from half a ton to 3 tons. FIBC is suitable for free flowing powder, granular or fine structure materials. For example, FIBC containing sugar, salt, tea, etc. is lifted by conventional loading equipment such as forklifts and cranes. They can carry loads far above their own weight. They do not require pallet since lift loops sewn thereon are provided. They can be used over and over again and occupy less space since they can be folded after use. For this reason, today, they are preferred for transportation of granular, powder or fluid products.
In the current state of the art, big bags (FIBCs) that possess panels inside, comprise a cubic form. They comprise four outer edges perpendicular to each other, a base and a top. A filling spout is disposed on the top thereof and a discharge spout is disposed on the base thereof. Four carrying loops are disposed on the corners thereof. Full closing and opening of the filling and discharge spouts is provided by the fasteners stitched on the spouts. Panels are provided in the corners for obtaining the said cubic form.
Said panels consist of a strip shaped fabric, wherein said fabric is secured to the edges of the bag at a certain distance from the corners where edges of said fabric join. Thus, the big bag shown in
This operation should be carried out by an exceptionally skilled and experienced tailor. Because in assembly of the panels by sewing thereof on the outer edges of the bag, sewing operation should be carried out on a linear line until the opposite horizontal edges. Guide plates (supports) enabling sewing on a straight line in the sewing machines can not be used since this sewing operation is carried out in the interior portion. Although experienced tailors can perform the assembly on a straight line without these supports, they are required to work slower than normal and pay more attention. In addition, another difficulty encountered in the current state of the art in the assembly of panel fabric is sewing said panel fabric by folding 2 to 3 cm from the edge thereof. During the assembly, tailor manually performs this folding and feeds it through the sewing machine. In this case, since folding margin is large, net distance of the panel decreases, more load is exerted on the panel during filling operation due to distortion of load distribution between the panels and this can result in tears. When the folding margin is less, there is the possibility that folding is not provided below the sewing, thus, tears also become inevitable during or after filling the bigbag (during storing and transporting) or since the strength of seam decreases.
In the assembly operations carried out by sewing, a firm cordonnet or a cordel is used to prevent the product put in the bag from flowing out through the hole formed by the needle and to prevent fabric's loss of strength due to the holes formed thereon. The sewing operation of the prior art performed for the assembly of panel fabrics on the main body outer edge fabrics is carried out 8 times for 4 panels on 2 edges of each fabric. In this case, components required for the sewing operation such as sewing thread, cordel and firm cordonnet consumed by performing the assembly sewing 8 times in the prior art will be reduced by half through performing said assembly sewing 4 times.
Wear and tear of big bags, thus, material leakage through these portions first takes place in the seam portions. As compared to a bag having less number of stitches and less amount of seams, the risk of product leakage will be more at a bigbag with higher number of seams.
In addition to all issues mentioned above, 4 top to bottom seams made along the bag instead of 8 top to bottom seams made along the bag will provide a market competitive product to the manufactures as well as offering the end users the advantage of acquiring the same product with a lower cost.
The present invention departing from the prior art intends to provide solutions to all of the aforementioned drawbacks.
The following description is provided by referring the portions of the outer edges having the height of the bag intersecting with each other as corners, the portions of the outer edges intersecting with the base and top as horizontal edges. Different from the panels of the prior art, a panel having a width extending from the midpoint of a horizontal edge to the midpoint of another horizontal edge is preferred. Two different panels are preferably secured by sewing thereof through the midpoint of the horizontal edge on an outer edge of the bag using a single seam. In
A panel having a width extending from the midpoint of a horizontal edge to the midpoint of another horizontal edge means a wider panel width as compared to that of the prior art. Since widening of the width dimension of the panel fabric increases the tensile strength in the direction of widening, the panel fabric g/m2 weight used in the prior art can be reduced by 40% with the new design.
The requirement of the sewing operation to be carried out by a skilled and experienced tailor is eliminated.
The duration of obtaining the product is reduced since the operation time corresponds to 4 seams instead of 8 seams is smaller.
In the assembly operations carried out by sewing, a firm cordonnet or a cordel is used to prevent the product placed in the bag from flowing out through the hole formed by the needle and to prevent fabric's loss of strength due to the holes formed thereon. With the newly developed technique, edges of 2 panels are joined and simultaneously sewn to the main body outer edge fabric. Therefore, reducing the sewing thread, cordel and firm cordonnet consumed for 8 seams of the prior art by half is provided by means of decreasing the number of seams to 4 with the new technique.
Further, product leakage risk is also reduced by half since number of seams extending along the bag is decreased from 8 to 4.
Difficulties and disadvantages encountered in the assembly of the panel fabric in the prior art due to sewing the fabric edges by folding thereof 2 to 3 cm are eliminated. In the developed technique, edges of the panel fabric are sewn without folding.
Thanks to the present invention, labor time for obtaining the product is reduced, quantities of materials being used are lowered and a cheap product providing the end user the opportunity to compete is obtained.
To achieve the aforementioned objects, the present invention relates to big bags (FIBC) comprising a base, four outer edges and an internal volume obtained by sewing of said base and said outer edges, an opening formed on the upper portion thereof for supplying the products desired to be filled inside said internal volume therethrough, an opening formed on said base for discharging the products disposed inside said internal volume to the external environment when desired, horizontal edges formed at the portions of said outer edges intersecting with said base and at the upper portions corresponding to said intersecting portions and adjacent panels positioned on said outer edges. The present invention is characterized in that it comprises a seam line obtained by bringing the edges of said adjacent panels on top of each other starting from said horizontal edge and sewing thereof on the outer edge so as to be parallel to the corners formed on the portions of said outer edges intersecting with each other until the other opposite horizontal edge is reached. Said seam line secures the two adjacent panel edges on the outer edge.
In such a case, a single seam line securing the adjacent panel edges on the other edge by bringing them on top of each other on an outer edge is obtained. When the panel edges are sewn by being brought on top of each other and the panel width is selected as the distance starting from the horizontal edge midpoint to the other horizontal edge midpoint, panel edges are attached on the outer edges with two different separate seam lines.
The present invention will be understood better by the description provided with referring to the following figures and reference numbers.
To obtain said cubic form, panels (20) are used within the internal volume (14) of the bag on the corners (21). These panels (20) are in the form of strips made of the same material used for obtaining the bag (10) and having a width (w) shorter than the height (H) thereof. Height (H) of the panels (20) is equal to the height (H) of the bag. Panels (20) are positioned on the intersecting outer edges (11) forming the corners (21). This positioning is carried out in such a way that an edge (23) of the panel (20) extending along the outer edge (11) (H) and the other edge (23) of the same panel (20) on the outer edge (21) is secured on the other adjacent outer edge (21). Said panels (20) can also be made of any type of rope or netting.
Edges (23) of the two independent panels (20) on a horizontal edge (111) are sewn on the outer edge (11) by a seam line (22) starting from the horizontal edge (111) in parallel to the corners (21) until reaching the other horizontal edge (111) by being brought on top of each other.
In another embodiment, width (w) of the panels is preferred to be equal to the length of the line extending from the midpoint (a) of a horizontal edge (111) of the bag (10) to the midpoint (a) of the adjacent horizontal edge (111). Panels (20) are sewn along a seam line (22) in parallel to the corners (21) by being brought on top of each other in the midpoints (a) of the bag horizontal edges (111).
Lifting loops (30) are formed close to the top (13) portion for carrying the bag (10). Lifting loops (30) are secured at the top portion (13) on the corners (21) of the bag (10).
| Number | Date | Country | Kind |
|---|---|---|---|
| 2013/14618 | Dec 2013 | TR | national |
