M-fold flexible freight bag with feed opening and production process of M-fold flexible freight bag

Abstract

The invention discloses an M-fold flexible freight bag with a feed opening and a production process thereof, and relates to the technical field of flexible freight bags, the M-fold flexible freight bag comprises a bag body, the two sides of an upper end opening of the bag body are connected with the lower ends of sling split bodies, and the middle of the upper end opening of the bag body is connected with a feed opening; the lower end opening of the bag body is connected with the bag bottom, and a discharging port unit is installed in the middle of the bag bottom. The production technology of the M-fold flexible freight bag with the discharging opening comprises the following steps that S1, cutting is conducted; s2, processing a bag bottom; s3, processing a leakage-proof ring; s4, mounting a leakage-proof ring; s5, carrying out split butt joint on the sling; s6, thermocompression welding; s7, the sling split body and a feeding port are formed; and S8, sewing the sling split bodies. According to the M-fold flexible freight bag with the discharging opening and the production process of the M-fold flexible freight bag, machining is adopted in a large amount, the product quality is improved, meanwhile, energy consumption and labor cost are reduced, and the occupied area of a factory is reduced; the hanging belts and the bag body are integrally formed, the sewing area is reduced, and the sealing performance and the structural strength are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of container bags, in particular to an M-fold container bag with a feeding port and a production process thereof. Background Art

[0002] FIBC is a flexible transport packaging container, which is widely used in the transport packaging of powdered, granular and blocky items such as food, grains, medicines, chemicals and minerals. It has the characteristics of low price, firmness, reliability, moisture-proof and sun-proof.

[0003] The existing container bags include bags and slings, which have too many processing steps, and the slings are manually sewn on the container bags at a later stage. On the one hand, the strength of the slings is insufficient. During the pulling process, due to uneven force, it is very easy to cause the pulling part and the side bag of the container bag to be torn apart, and the container bag is structurally damaged, causing the objects in the container bag to spill, affecting work efficiency; on the other hand, during the use of the container bag, material leakage is prone to occur at the sewing part, and in the process of manual sewing, the stitch length and stitches of the seam edge are affected by manual operations and are not easy to ensure consistency and standardization, and it is not easy to ensure sealing performance; further, it is not easy to achieve automated production, and a large amount of labor is required in the process of making container bags; at the same time, the existing bottom discharge port structure is relatively simple, which is not convenient for sealing.

[0004] How to develop an M-folded container bag with a feed port and its production process, adopt mechanized production on a large scale to reduce the use of manpower, and make the sling and the container bag one-piece to improve the strength of the container bag, while reducing the area of ​​the sewing part, improving the sealing performance of the container bag, improving the bag bottom structure, and reducing leakage from the feed port have become technical problems that need to be urgently solved by technical personnel in this field. Summary of the invention

[0005] The purpose of the present invention is to provide an M-fold container bag with a feeding port and a production process thereof, so as to solve the problems listed in the background technology.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The M-fold container bag with a feeding port of the present invention comprises a bag body, both sides of the upper opening of the bag body are connected to the lower ends of the sling split body, and the middle of the upper opening of the bag body is connected to the feeding port;

[0008] The lower end opening of the bag body is connected to the bag bottom, and a feed outlet unit is installed in the middle of the bag bottom.

[0009] Preferably, the upper ends of the sling parts are fixedly connected via a stitching area.

[0010] Preferably, the vertical joints of the feed opening are fixedly connected by a hot pressing welding area.

[0011] Preferably, the bag bottom is made of the same material as the bag body, and the bag bottom is square in shape.

[0012] Preferably, the edge of the bag bottom is fixedly connected to the lower opening of the bag body through the stitching area.

[0013] Preferably, the feed port unit comprises a feed pipe and a leak-proof ring, and the upper end opening of the feed pipe is fixedly connected to the opening in the middle of the bag bottom through the suture area;

[0014] The outer edge of the leak-proof ring is fixedly mounted on the lower surface of the bag bottom through the stitching area.

[0015] Preferably, the leak-proof ring is coaxial with the feed tube, and the inner diameter of the leak-proof ring is larger than the outer diameter of the feed tube.

[0016] Preferably, a baffle is also installed on the inner side wall of the leak-proof ring, and the size of the baffle is larger than the size of the inner ring of the leak-proof ring.

[0017] Preferably, it also includes a fastening rope loop, which is fixedly installed on the inner ring of the leak-proof ring through the suture area.

[0018] The production process of M-fold container bags with a feeding port includes the following steps:

[0019] S1, cutting, cutting the prepared bulk bag base fabric along the free end according to the preset length;

[0020] S2, processing the bag bottom, cutting a through hole in the middle of the bag bottom, and manually sewing a feed tube at the through hole;

[0021] S3, processing the leak-proof ring, sewing a baffle on the surface of the leak-proof ring, and sewing a fastening rope loop on the inner ring of the leak-proof ring;

[0022] S4. Install the leak-proof ring and sew the leak-proof ring on the lower surface of the bag bottom;

[0023] S5. After the slings are connected separately and the bag bottom and bag body are sewn, they are placed in an M-fold forming machine for M-fold forming;

[0024] S6, hot pressing welding, placing the upper opening of the folded bag body on a hot pressing welding machine, and performing layered hot pressing welding on the two V-shaped side walls of the M-folded side wall;

[0025] S7, forming the sling body and the feed port, cutting the hot pressing welding area symmetrically, forming the feed port in the middle of the two hot pressing welding areas, and forming the sling body with the hot pressing welding area and the V-fold side wall;

[0026] S8, sew up the sling parts, and connect the two sling parts by sutures to form a sling in a closed state.

[0027] Compared with the prior art, the beneficial technical effects of the present invention are:

[0028] The M-fold container bag with a feed opening and the production process thereof of the present invention adopt a large amount of mechanical processing, which not only improves the quality of the product, but also reduces the amount of labor and sewing machinery used in manual sewing, while reducing energy consumption and labor costs, and further reducing the floor space of the factory; at the same time, the sling is integrally formed with the bag body, which reduces the sewing area and ensures the sealing performance, further improving the strength of the container bag, and at the same time, the feed opening unit is fixedly connected to the bottom of the bag, which is convenient for the container bag to unload, and the sealing performance of the feed opening is ensured by the design of the leak-proof ring, thereby preventing the material from leaking from the bottom of the container bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Figure 1 This is a front view of an M-fold container bag with a feed opening according to the present invention (not filled with materials);

[0031] Figure 2 This is a front view of the M-fold container bag with a feed opening of the present invention (material filling state);

[0032] Figure 3 It is a side view of the M-fold container bag with a discharge port of the present invention (material filling state);

[0033] Figure 4 This is a bottom view of the M-fold container bag with a feed opening of the present invention (material filling state);

[0034] Figure 5 The present invention is a three-dimensional M-fold container bag with a feeding port Figure 1 (Material filling status);

[0035] Figure 6 The present invention is a three-dimensional M-fold container bag with a feeding port Figure 2 (Material filling status).

[0036] Explanation of the accompanying drawings: 1. Bag body; 2. Sling split; 3. Stitching area; 4. Feed inlet; 5. Hot pressing welding area; 6. Feed outlet unit; 7. Bag bottom. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] like Figure 1-6 As shown, the M-fold container bag with a feeding port comprises a bag body 1, both sides of the upper opening of the bag body 1 are connected to the lower ends of the sling split body 2, and the middle of the upper opening of the bag body 1 is connected to the feeding port 4;

[0039] The lower opening of the bag body 1 is connected to the bag bottom 7, and a feed port unit 6 is installed in the middle of the bag bottom 7. The sling split body and the bag body are integrally formed, which effectively ensures the connection strength between the sling split body and the bag body. On the one hand, there is no need to sew the sling on the outside of the bag body, reducing the risk of powder material leakage from the stitches. On the other hand, the sewing process and labor usage are reduced, thereby reducing production costs.

[0040] Specifically, the upper ends of the sling parts 2 are fixedly connected via the stitching area 3, which effectively ensures the firmness of the connection between the sling parts, thereby avoiding the risk of falling during the process of hoisting materials.

[0041] Specifically, the vertical seams of the feed port 4 are fixedly connected by the hot-pressing welding area 5, which reduces the stitches reserved during the sewing process. The hot-pressing welding is used for connection to ensure the sealing performance of the material during the pouring process through the feed port.

[0042] Specifically, the bag bottom 7 is made of the same material as the bag body 1 , and the bag bottom 7 is square in shape.

[0043] Specifically, the edge of the bag bottom 7 is fixedly connected to the lower opening of the bag body 1 through the stitching area 3, and the stitching area is used for connection in the stress-bearing area of ​​the bag bottom, which effectively ensures the stability of the bag bottom connection.

[0044] Specifically, the feed port unit 6 includes a feed pipe and a leak-proof ring, and the upper end opening of the feed pipe is fixedly connected to the opening in the middle of the bag bottom 7 through the stitching area 3;

[0045] The outer ring edge of the leak-proof ring is fixedly mounted on the lower surface of the bag bottom 7 through the stitching area 3, the leak-proof ring is coaxial with the discharge pipe, and the inner ring diameter of the leak-proof ring is larger than the outer diameter of the discharge pipe. When filling the material, the mouth of the discharge pipe is tied and placed in the leak-proof ring, and the sealing operation of the discharge pipe mouth is achieved under the gravity of the material.

[0046] Specifically, a baffle is installed on the inner side wall of the leak-proof ring. The size of the baffle is larger than the size of the inner ring of the leak-proof ring. The baffle can seal the inner ring of the leak-proof ring to prevent the feeding pipe from escaping from the leak-proof ring during the lifting process.

[0047] Specifically, it also includes a tightening rope loop, which is fixedly installed on the inner ring of the leak-proof ring through the stitching area 3, and can tighten the inner ring opening to prevent the material from escaping from the leak-proof ring during the lifting process, and can ensure the effectiveness of the baffle during the sealing process.

[0048] The production process of M-fold container bags with a feeding port includes the following steps:

[0049] S1, cutting, cutting the prepared bulk bag base fabric along the free end according to the preset length;

[0050] S2, processing the bag bottom, cutting a through hole in the middle of the bag bottom, and manually sewing a feed tube at the through hole, and after the feed tube is sewn, sewing a leak-proof ring on the lower surface of the bag bottom;

[0051] S3, processing the leak-proof ring, sewing a baffle on the surface of the leak-proof ring, and sewing a fastening rope loop on the inner ring of the leak-proof ring;

[0052] S4. Install the leak-proof ring and sew the leak-proof ring on the lower surface of the bag bottom;

[0053] S5. After the sling is split and connected, the bag bottom and bag body are sewn, and then placed in an M-fold forming machine for M-fold forming. At this time, the two side walls of the bag body are bent inwards relative to each other, and the bag bottom is bent upwards;

[0054] S6, hot pressing welding, placing the upper opening of the folded bag body on a hot pressing welding machine, and performing layered hot pressing welding on the two V-shaped side walls of the M-folded side wall;

[0055] S7, forming the sling body and the feed port, cutting the hot pressing welding area symmetrically, forming the feed port in the middle of the two hot pressing welding areas, and forming the sling body with the hot pressing welding area and the V-fold side wall;

[0056] S8, sew up the sling parts, and connect the two sling parts by sutures to form a sling in a closed state.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0058] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An M-fold container bag with a feeding port, comprising a bag body (1), characterized in that: The two sides of the upper opening of the bag body (1) are connected to the lower end of the sling body (2), and the middle of the upper opening of the bag body (1) is connected to the feed port (4); The lower opening of the bag body (1) is connected to the bag bottom (7), and a feed outlet unit (6) is installed in the middle of the bag bottom (7).

2. The M-fold container bag with a feeding port according to claim 1 is characterized in that: The upper ends of the sling parts (2) are fixedly connected via a stitching area (3).

3. The M-fold container bag with a feeding port according to claim 1 is characterized in that: The vertical joints of the feed opening (4) are fixedly connected via a hot pressing welding area (5).

4. The M-fold container bag with a feeding port according to claim 2, characterized in that: The bag bottom (7) is made of the same material as the bag body (1), and the bag bottom (7) is square in shape.

5. The M-fold container bag with a feeding port according to claim 4 is characterized in that: The edge of the bag bottom (7) is fixedly connected to the lower opening of the bag body (1) via the stitching area (3).

6. The M-fold container bag with a feeding port according to claim 5, characterized in that: The discharge port unit (6) comprises a discharge pipe and a leak-proof ring, and the upper end opening of the discharge pipe is fixedly connected to the opening in the middle of the bag bottom (7) through the stitching area (3); The outer edge of the leak-proof ring is fixedly mounted on the lower surface of the bag bottom (7) through the stitching area (3).

7. The M-fold container bag with a feeding port according to claim 6, characterized in that: The anti-leakage ring is coaxial with the feed tube, and the inner diameter of the anti-leakage ring is larger than the outer diameter of the feed tube.

8. The M-fold container bag with a feeding port according to claim 7, characterized in that: A blocking piece is also installed on the inner side wall of the leak-proof ring, and the size of the blocking piece is larger than the size of the inner circle of the leak-proof ring.

9. The M-fold container bag with a feeding port according to claim 8, characterized in that: It also comprises a fastening rope loop, which is fixedly mounted on the inner ring of the leak-proof ring through the suture area (3).

10. A production process for an M-fold container bag with a discharge port, used for producing the M-fold container bag with a discharge port as described in any one of 1 to 9, characterized in that: The steps include: S1, cutting, cutting the prepared bulk bag base fabric along the free end according to the preset length; S2, processing the bag bottom, cutting a through hole in the middle of the bag bottom, and manually sewing a feed tube at the through hole; S3, processing the leak-proof ring, sewing a baffle on the surface of the leak-proof ring, and sewing a fastening rope loop on the inner ring of the leak-proof ring; S4. Install the leak-proof ring and sew the leak-proof ring on the lower surface of the bag bottom; S5. After the slings are connected separately and the bag bottom and bag body are sewn, they are placed in an M-fold forming machine for M-fold forming; S6, hot pressing welding, placing the upper opening of the folded bag body on a hot pressing welding machine, and performing layered hot pressing welding on the two V-shaped side walls of the M-folded side wall; S7, forming the sling body and the feed port, cutting the hot pressing welding area symmetrically, forming the feed port in the middle of the two hot pressing welding areas, and forming the sling body with the hot pressing welding area and the V-fold side wall; S8, sew up the sling parts, and connect the two sling parts by sutures to form a sling in a closed state.

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