An improved monolithic flexible container

Abstract

The utility model discloses an improved integral type flexible container belongs to the container transport device technical field, including bag body, bag bottom, feed port and sling, bag body, bag bottom, feed port are all integrally made into shape on a piece of cylindrical base cloth, the cylindrical base cloth is square cylindrical base cloth, and the bag body top is the feed port, and the bottom is the bag bottom of sealed suture type, the bag body on the side of feed port is provided with the integrated folding reinforcing interlayer, and the folding reinforcing interlayer is used in cooperation with the connection of sling, the sling end embeds in the folding reinforcing interlayer, and the sling end is connected by the fastening suture of multiple suture lines between the folding reinforcing interlayer, and the folding reinforcing interlayer is cut and folded by the bag body, and the folding reinforcing interlayer is at least two layers of folding. The utility model improves the structural strength of the connection of sling and bag body, effectively prevents the bag body damage in the process of hoisting, improves the bearing safety and service life of flexible container, and improves the product performance.

Description

Technical Field

[0001] This utility model belongs to the technical field of container transportation devices, specifically relating to an improved integral flexible container. Background Technology

[0002] Flexible containers are a type of unitized container, used in conjunction with cranes or forklifts to achieve unitized transportation. They are suitable for transporting large quantities of bulk, powdery, and granular materials. Flexible containers are large containers made of flexible materials that can be bent, and are widely used in the filling of various powdery, granular, and lumpy goods in industries such as chemicals, cement, grains, and minerals. They are ideal for warehousing and transportation industries.

[0003] On August 22, 2024, the applicant applied for a utility model patent entitled "An Integral Flexible Container," with authorization announcement number CN221776497U. This patent discloses an integral flexible container where the bag body, bottom, inlet, and lifting ring are integrally formed on a single cylindrical base fabric. The inlet and lifting ring are formed by cutting and sewing, eliminating the need for splicing multiple materials, saving materials, and improving production efficiency. However, this integral flexible container still has the following shortcomings in practical use: First, the lifting ring is directly sewn from the remaining upper cylindrical base fabric on both sides of the inlet, resulting in limited connection strength between the lifting ring and the bag body. During the filling of heavier materials or lifting, the base of the lifting ring is prone to tearing. Second, the lifting ring structure is relatively simple, only providing a single-direction lifting method, making it less adaptable to narrow spaces or irregular lifting devices. Third, the structural strength of the lifting ring is limited, making it prone to fatigue damage after long-term use, affecting its service life and safety. Utility Model Content

[0004] This invention addresses the aforementioned problems and overcomes the shortcomings of existing technologies by providing an improved integral flexible container.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An improved integral flexible container includes a bag body, a bag bottom, a feed inlet, and a lifting strap. The bag body, bag bottom, and feed inlet are all integrally formed on a cylindrical base fabric. The top of the bag body is the feed inlet, and the bottom is a sealed and sewn bag bottom. An integrally formed folded reinforcing layer is provided on the bag body on the side of the feed inlet. The folded reinforcing layer is used in conjunction with the lifting strap. The end of the lifting strap is embedded in the folded reinforcing layer, and the end of the lifting strap is tightly sewn to the folded reinforcing layer by multiple stitches.

[0007] Furthermore, the sling is a parallel structure sling, which includes two parallel slings symmetrically arranged on both sides of the feed inlet. The ends of the two parallel slings are fastened and sewn together with the folded reinforced interlayer by multiple stitches.

[0008] Furthermore, the sling is a cross-structure sling, which includes two cross slings located above the feed inlet and the ends of the two cross slings are fastened and sewn together with the folded reinforcing interlayer by multiple stitches.

[0009] Furthermore, the folded reinforcing interlayer is formed by cutting and folding the bag body, and the folded reinforcing interlayer consists of at least two folds.

[0010] Furthermore, the cylindrical base fabric is a square cylindrical base fabric.

[0011] Furthermore, the cylindrical base fabric is made of polypropylene.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The improved integral flexible container provided by this utility model has the following advantages:

[0014] 1. This utility model improves the structural strength of the connection between the sling and the bag body by integrally forming a folded reinforcing interlayer on the side of the inlet, embedding the end of the sling into the folded reinforcing interlayer, and then fastening it with multiple stitches. This effectively prevents damage to the bag body during the lifting process and improves the load-bearing safety and service life of the flexible container.

[0015] 2. This utility model provides two implementation methods: parallel structure slings and cross structure slings. The parallel structure slings are symmetrically arranged on both sides of the feed inlet, which is suitable for conventional lifting tools and provides stable lifting. The cross structure slings are arranged crosswise above the feed inlet, which is suitable for single-point lifting or lifting scenarios with limited space. During lifting, the slings automatically center, the material bag is not easy to shake, and it is convenient to operate.

[0016] 3. The folding reinforcement interlayer of this utility model is cut and folded from the bag body, and is integral and continuous with the bag body material. No additional materials are required, which not only ensures the reinforcement effect, but also does not increase the material cost. Moreover, the folding structure itself has a buffering and energy absorption function, which can disperse the concentrated stress during lifting.

[0017] 4. The present invention is still based on a single cylindrical base fabric integrally formed, which maintains the advantages of the original integral flexible container, such as material saving, simple process and automated production. At the same time, the product performance is greatly improved through local structural optimization. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of an embodiment of an improved integral flexible container of this utility model.

[0020] Figure 2 This is a schematic diagram of the planar structure of an improved integral flexible container according to Embodiment 1 of this utility model.

[0021] Figure 3 This is a three-dimensional structural diagram of a second embodiment of an improved integral flexible container of this utility model.

[0022] Figure 4 This is a schematic diagram of the planar structure of a second embodiment of an improved integral flexible container of this utility model.

[0023] Figure 5 This is a cross-sectional structural diagram showing the connection between the sling end and the folded reinforced interlayer in Embodiments 1 and 2 of the improved integral flexible container of this utility model.

[0024] The markings in the diagram are: 1 for the feed inlet, 2 for the lifting strap, 3 for the stitching line, 4 for the bag body, 5 for the bag bottom, and 6 for the folded reinforcing interlayer. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1: Combining Figure 1 , Figure 2 and Figure 5As shown, this embodiment provides an improved integral flexible container, including a bag body 4, a bag bottom 5, a feed inlet 1, and a lifting strap 2. The bag body 4, bag bottom 5, and feed inlet 1 are all integrally formed on a cylindrical base fabric, which is a square cylindrical base fabric. The top of the bag body 4 is the feed inlet 1, and the bottom is a sealed and sewn bag bottom 5. An integrally formed folded reinforcing interlayer 6 is provided on the side of the bag body 4 next to the feed inlet 1. The folded reinforcing interlayer 6 is used in conjunction with the lifting strap 2. The end of the lifting strap 2 is embedded in the folded reinforcing interlayer 6, and the end of the lifting strap 2 and the folded reinforcing interlayer 6 are tightly sewn together by multiple stitches 3. The lifting strap 2 is a parallel structure lifting strap, which includes two parallel lifting straps 2. The two parallel lifting straps 2 are symmetrically arranged on both sides of the feed port 1. The ends of the two parallel lifting straps 2 are tightly sewn to the folded reinforcing interlayer 6 by multiple stitches 3. This can significantly improve the structural strength at the connection between the lifting strap 2 and the bag body 4, effectively prevent damage to the bag body 4 during the lifting process, and thus improve the load-bearing safety and service life of the flexible container.

[0027] Preferably, the cylindrical base fabric is made of polypropylene.

[0028] Specifically, the folded reinforcing interlayer 6 is cut and folded from the bag body 4; preferably, the folded reinforcing interlayer 6 is a three-layer fold, such as... Figure 5 The folding pattern shown.

[0029] Specifically, for Embodiment 1 (parallel structure slings), when using it: hang the two parallel slings 2 on the two ends of the forklift forks or the crane hook respectively, keep the slings 2 vertically under force, and lift steadily; this method is suitable for conventional lifting equipment, and the bag body 4 remains upright after lifting, ensuring stable transportation.

[0030] Example 2: Combination Figures 3 to 5As shown, this embodiment provides an improved integral flexible container, including a bag body 4, a bag bottom 5, a feed inlet 1, and a lifting strap 2. The bag body 4, bag bottom 5, and feed inlet 1 are all integrally formed on a cylindrical base fabric, which is a square cylindrical base fabric. The top of the bag body 4 is the feed inlet 1, and the bottom is a sealed and sewn bag bottom 5. An integrally formed folded reinforcing interlayer 6 is provided on the side of the bag body 4 near the feed inlet 1. The folded reinforcing interlayer 6 is used in conjunction with the lifting strap 2. The end of the lifting strap 2 is embedded in the folded reinforcing interlayer 6, and the end of the lifting strap 2 and the folded reinforcing interlayer 6 are tightly sewn together by multiple stitches 3. The lifting strap 2 is a cross-structure lifting strap, which includes two intersecting lifting straps 2. The two intersecting lifting straps 2 are arranged above the feed inlet 1 and the intersection point of the two lifting straps 2 is exactly on the central axis of the feed inlet 1. The ends of the two intersecting lifting straps 2 are tightly sewn to the folded reinforcing interlayer 6 by multiple stitches 3. This can significantly improve the structural strength of the connection between the lifting strap 2 and the bag body 4, effectively prevent damage to the bag body 4 during the lifting process, and thus improve the load-bearing safety and service life of the flexible container.

[0031] Preferably, the cylindrical base fabric is made of polypropylene.

[0032] Specifically, the folded reinforcing interlayer is formed by cutting and folding the bag body; preferably, the folded reinforcing interlayer is a three-layer fold, such as... Figure 5 The folding pattern shown.

[0033] Specifically, for Embodiment 2 (cross-structure lifting straps), in use: the upper ends of the two cross lifting straps 2 are brought together at a single lifting point (e.g., in conjunction with a single-hook crane). No manual assistance is required for lifting. The two lifting straps 2 naturally cross above the feed inlet 1, with the crossing point located precisely on the central axis of the feed inlet 1. During lifting, the crossing point of the lifting straps 2 is compressed, causing the upper part of the bag body 4 to close up, preventing material from spilling. Furthermore, the bag body 4 automatically centers during lifting, making it suitable for narrow spaces or single-point lifting scenarios.

[0034] The above-described embodiments are merely preferred embodiments of this utility model and not all embodiments. This utility model may have other implementation methods. The above embodiments are only used to explain this utility model and should not be considered as limiting the scope of implementation of this utility model, nor do they constitute a limitation on the protection scope of this utility model. There are many ideas, methods and approaches to implement this technical solution. It should be noted that, without departing from the structural principle of this utility model, all other related embodiments obtained by those skilled in the art without making any inventive effort, or any technical solutions formed by equivalent substitution or equivalent transformation, fall within the protection scope of the claims of this utility model.

[0035] Furthermore, although certain terms are used in this specification, these terms are merely for the convenience of describing the present invention and do not constitute any limitation on the present invention.

Claims

1. An improved integral flexible container, comprising a bag body, a bag bottom, a feed inlet, and lifting straps; characterized in that: The bag body, bottom, and inlet are all integrally formed on a single cylindrical base fabric. The top of the bag body is the inlet, and the bottom is a sealed, sewn-on bag bottom. An integrally formed folded reinforcing interlayer is provided on the side of the bag body next to the inlet. The folded reinforcing interlayer is used in conjunction with the lifting strap. The end of the lifting strap is embedded in the folded reinforcing interlayer, and the end of the lifting strap and the folded reinforcing interlayer are tightly sewn together by multiple stitches.

2. The improved integral flexible container according to claim 1, characterized in that: The sling is a parallel structure sling, which includes two parallel slings symmetrically arranged on both sides of the feed inlet. The ends of the two parallel slings are fastened and sewn together with the folded reinforced interlayer by multiple stitches.

3. The improved integral flexible container according to claim 1, characterized in that: The sling is a cross-structure sling, which includes two cross slings. The two cross slings are arranged crosswise above the feed inlet, and the ends of the two cross slings are fastened and sewn together with the folded reinforcing interlayer by multiple stitches.

4. An improved integral flexible container according to any one of claims 1 to 3, characterized in that: The folded reinforcing interlayer is formed by cutting and folding the bag body, and the folded reinforcing interlayer consists of at least two folds.

5. An improved integral flexible container according to claim 1, characterized in that: The tubular base fabric is a square tubular base fabric.

6. An improved integral flexible container according to claim 1, characterized in that: The cylindrical base fabric is made of polypropylene.

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