Low-melting-point direct-throw valve bag for automatic canning of chlorinated polyethylene

Abstract

The utility model belongs to the technical field of packaging bags, and discloses a low-melting-point direct-throw valve bag for automatic canning of chlorinated polyethylene, which comprises an integrally formed first bag body, one end of the upper end of the first bag body is fixedly connected with a valve port, and a plurality of exhaust groups are linearly arrayed on two sides of the first bag body along the width direction. A plurality of anti-skid protrusion sets are evenly distributed in the middle of the first bag body in the width direction at intervals, and a protrusion partition is arranged between every two sets of anti-skid protrusions. The chlorinated polyethylene filling device is simple in overall structure, chlorinated polyethylene can be filled, gas in a bag body can be rapidly exhausted in the filling process, the overall appearance is regular after filling is completed, stacking is convenient, meanwhile, the chlorinated polyethylene filling device can be put into use along with chlorinated polyethylene, and the chlorinated polyethylene filling device is environmentally friendly, free of toxicity, low in cost and capable of improving the using effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging bags, and specifically relates to a low-melting-point direct-injection valve bag for automatic canning of chlorinated polyethylene. Background Technique

[0002] Chlorinated polyethylene (CPE) is an important thermoplastic elastomer. Due to its excellent physical and chemical properties, it has a wide range of applications in fields such as wire and cable, waterproof materials, automotive parts, and pipelines. In the process of automatic canning of chlorinated polyethylene, the selection of packaging materials is also crucial. Traditional packaging materials such as plastic bags and woven bags often have problems such as easy breakage, poor sealing performance, and difficulty in recycling during the filling process.

[0003] In order to improve the filling efficiency of chlorinated polyethylene, valve bags are increasingly used. Valve bags use special filling equipment to feed from the top or bottom valve openings. After filling with chlorinated polyethylene materials, they are packed into cubes, and the stacked bags are neat and beautiful, improving the packaging efficiency; the design of valve bags makes the materials not easy to leak during transportation, reducing losses and pollution during transportation.

[0004] During the process of filling chlorinated polyethylene with valve bags, high requirements are placed on the air holes on the surface of the valve bags. If the air holes are reasonably designed, the exhaust efficiency of the valve bags can be improved, thereby improving the filling efficiency of chlorinated polyethylene. At the same time, after the chlorinated polyethylene is filled, conveyor belts are often used to transport the valve bags filled with chlorinated polyethylene, and the friction stability on the surface of the valve bags is extremely important.

[0005] A Chinese patent with the application number CN2020103602592 discloses a low-melting-point valve bag and its manufacturing method. Among them, the low-melting-point valve bag includes a valve bag body and a valve opening. The valve opening includes an outer valve opening and an inner valve opening. The outer valve opening is arranged on the right side of the top of the valve bag body, and the inner valve opening is arranged at a position corresponding to the outer valve opening inside the valve bag body; several air holes are arranged on the valve opening; in this application, the air holes are only located on the valve opening, and the exhaust volume is not good. Moreover, the overall structure of this kind of valve bag is a cube structure, and workers need to seal it additionally on both sides, with a complex structure formation and high cost.

[0006] A Chinese patent with the application number CN202121126053.X discloses a low-melting-point anti-slip valve bag, which includes a bag body. A valve opening is provided on the bag body. An upper shaping component for shaping the upper end of the bag body is provided at a position near the upper end of the bag body. A lower shaping component for shaping the lower end of the bag body is provided at a position near the lower end of the bag body. A placement cavity is provided at a position below the valve opening on the bag body. The overall structure of the utility model is stable. After being filled with carbon black, the overall shape of the bag body is regular, which is convenient for stacking. Moreover, the exhaust efficiency is high, and the gas in the bag body can be quickly discharged, reducing the deformation ability of the bag body. And it can be put into the rubber mixing equipment together with carbon black, and no packaging waste will be generated during the use process. However, in this application, first of all, the structure of the bag body is complex. This kind of valve bag is mainly used for filling carbon black materials. Shaping components are provided at both the upper and lower ends of the bag body, with a complex structure and high cost. Although air holes are provided on the bag body, the exhaust volume is still insufficient. Moreover, the anti-slip protrusions are located at positions near the two sides of the edge of the bag body. When the material is filled, the anti-slip protrusions are easily broken and the material leaks. Summary of the Invention

[0007] The main technical problem to be solved by the present utility model is to provide a low-melting-point direct-injection valve bag for automatic canning of chlorinated polyethylene, which has a simple overall structure, can fill chlorinated polyethylene, can quickly discharge the gas in the bag body during the filling process, has a regular overall shape after filling, is convenient for stacking, can be put into use together with chlorinated polyethylene, is environmentally friendly and non-toxic, reduces costs, and improves the use effect.

[0008] To solve the above technical problems, the present utility model provides the following technical solutions:

[0009] A low-melting-point direct-injection valve bag for automatic canning of chlorinated polyethylene includes a first bag body formed integrally. One end of the upper end of the first bag body is fixedly connected with a valve opening. Multiple groups of exhaust groups are linearly arranged at both sides of the first bag body along the width direction. Multiple groups of anti-slip protrusion groups are evenly spaced at the middle position of the first bag body along the width direction. A protrusion partition is provided between each group of anti-slip protrusion groups;

[0010] A bottom fold line group is provided at the bottom end position of the first bag body, and side fold line groups are provided on both side surfaces of the first bag body;

[0011] The exhaust group includes multiple first air holes arranged in a pentagon, and a second air hole is opened in the middle of the multiple first air holes.

[0012] The following is the further optimization of the present utility model for the above technical solutions:

[0013] A seal is provided at the middle position of the upper end of the first bag body, and multiple parallel plastic sealing edges are provided at the seal.

[0014] Further optimization: A bag body connecting edge is provided at one end position of the sealing mouth, and the width of the bag body connecting edge is 18 - 25 mm.

[0015] Further optimization: A valve port connecting edge is provided at the position corresponding to the bag body connecting edge on the valve port. The valve port connecting edge and the bag body connecting edge are fixedly connected together by plastic sealing, and the width of the valve port connecting edge is 18 - 25 mm.

[0016] Further optimization: The sizes of the first air holes and the second air holes are both set to 0.5 - 0.8 mm. The distance between every two first air holes within each exhaust group and the distance between each first air hole and the second air hole are both set to 0.4 - 0.6 cm. The distance between two exhaust groups is set to 1.4 - 1.6 cm.

[0017] Further optimization: The anti-slip convex group includes a plurality of convexes linearly arrayed at the middle position of the first bag body, and the shape of the convexes is set to be cylindrical.

[0018] The utility model adopts the above technical solutions, with ingenious conception and reasonable structure. It can match the discharge port of the automatic filling equipment for chlorinated polyethylene, fill chlorinated polyethylene, discharge the gas in the valve bag during the filling process, and has a regular overall shape, which is convenient for palletizing, improving the use effect and facilitating use.

[0019] The exhaust group of the valve bag is provided with five first air holes arranged in a pentagon. A second air hole is also provided in the middle of the five first air holes. Such a design can increase the exhaust volume during the filling process, and make the first bag body not easily torn and leaked. At the same time, during the palletizing process, the upper layer exerts a downward pressure on the lower layer, further discharging the gas in the valve bag and avoiding the phenomenon of bag explosion, further improving the use effect.

[0020] This kind of valve bag is environmentally friendly, non-toxic, and has a low melting point. It can be fed together with the valve bag when using chlorinated polyethylene, without generating packaging waste, reducing the treatment cost, and being green and environmentally friendly.

[0021] The following further illustrates the utility model with reference to the drawings and embodiments. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the overall structure in Embodiment 1 of the utility model;

[0023] Figure 2 It is a schematic diagram of the valve port connection structure in Embodiment 1 of the utility model;

[0024] Figure 3 It is a schematic diagram of the structure at A in Embodiment 1 of the utility model;

[0025] Figure 4Schematic diagram of the overall structure of Embodiment 3 of the present utility model;

[0026] Figure 5 Schematic diagram of the structure at position B in Embodiment 3 of the present utility model.

[0027] In the figure: 1. First bag body; 11. Sealing; 110. Plastic sealing edge; 12. Bottom fold line group; 13. Side fold line group; 14. Bag body connection edge; 2. Valve opening; 21. Valve opening connection edge; 3. Exhaust group; 31. First air hole; 32. Second air hole; 4. Anti-slip protrusion group; 41. Protrusion; 5. Protrusion partition; 6. Second bag body; 61. Bottom sealing edge. Specific implementation manner

[0028] Embodiment 1: As Figures 1-3 shown, a low-melting-point direct-injection valve bag for automatic canning of chlorinated polyethylene includes an integrally formed first bag body 1. One end of the upper end of the first bag body 1 is fixedly connected with a valve opening 2. Multiple groups of exhaust groups 3 are linearly arranged at both sides of the first bag body 1 along the width direction. Multiple groups of anti-slip protrusion groups 4 are evenly spaced at the middle position of the first bag body 1 along the width direction. A protrusion partition 5 is arranged between each group of anti-slip protrusion groups 4;

[0029] A bottom fold line group 12 is arranged at the bottom end position of the first bag body 1, and side fold line groups 13 are arranged on both side surfaces of the first bag body 1;

[0030] The exhaust group 3 includes multiple first air holes 31 arranged in a pentagon, and a second air hole 32 is opened in the middle of the multiple first air holes 31.

[0031] In this Embodiment 1, the first bag body 1 is integrally formed, which can improve the processing efficiency and reduce the cost.

[0032] A sealing 11 is arranged at the middle position of the upper end of the first bag body 1, and multiple parallel plastic sealing edges 110 are arranged at the sealing 11.

[0033] The plastic sealing edge 110 is made by plastic sealing processing with special equipment. The specific forming principle is already well-known and will not be elaborated here.

[0034] With such a design, the sealing 11 of the first bag body 1 is firmly sealed, avoiding cracking during use.

[0035] A bag body connection edge 14 is arranged at one end position of the sealing 11. In this embodiment, the width of the bag body connection edge 14 is 18 - 25 mm.

[0036] At the connection position of the valve opening 2 and the first bag body 1, that is, at the position corresponding to the bag body connection edge 14, a valve opening connection edge 21 is arranged. In this embodiment, the width of the valve opening connection edge 21 is 18 - 25 mm.

[0037] After the bag body connecting edge 14 and the valve port connecting edge 21 are aligned, they are sealed and connected by a special plastic sealing device. In this Embodiment 1, the width of the plastic sealing between the bag body connecting edge 14 and the valve port connecting edge 21 is 4 - 6 mm.

[0038] The valve port 2 is used to connect with a special chlorinated polyethylene filling device when the valve bag is in use.

[0039] In this Embodiment 1, five first air holes 31 are arranged in each exhaust group 3.

[0040] The sizes of the first air holes 31 and the second air holes 32 are both set to 0.5 - 0.8 mm. The distance between every two first air holes 31 in each exhaust group 3 and the distance between each first air hole 31 and the second air hole 32 are both set to 0.4 - 0.6 cm. The distance between every two exhaust groups 3 is set to 1.4 - 1.6 cm.

[0041] The first air holes 31 and the second air holes 32 arranged in a pentagonal pattern are beneficial for improving the exhaust efficiency of the exhaust group 3 when the valve bag is filled with chlorinated polyethylene. Moreover, when filling chlorinated polyethylene, the two sides of the first bag body 1 are not easily torn.

[0042] Meanwhile, when stacking the filled valve bags, the upper valve bag exerts a downward pressure on the lower valve bag, further discharging the residual gas in the lower valve bag through the exhaust group 3, avoiding the phenomenon of bursting bags during the stacking process.

[0043] The anti - slip protrusion group 4 includes a plurality of protrusions 41 linearly arrayed at the middle position of the first bag body 1, and the shape of the protrusions 41 is set to be cylindrical.

[0044] The function of the anti - slip protrusion group 4 is to increase the friction on the surface of the first bag body 1, facilitating transportation and stacking.

[0045] The function of the protrusion partition 5 is to enhance the overall strength of the first bag body 1 while ensuring the friction on the surface of the first bag body 1, and at the same time ensuring no deformation during use.

[0046] The bottom fold line 12 is set to an M - fold structure, and the M - fold structure is formed in one step by a special device. The process is simple and the production rate is improved. The specific forming process is already well - known in the prior art and will not be elaborated here.

[0047] The side fold line group 13 is also formed in one step by a special device, making the first bag body 1 neat and beautiful. The specific production process will not be elaborated here.

[0048] During use, the valve port 2 is sleeved at the discharge port of the dedicated filling equipment, that is, chlorinated polyethylene is filled into the first bag body 1 through the valve port 2. During the filling process, the gas in the first bag body 1 is discharged through the exhaust group 3. After the filling is completed, the material at the sealing part 11 of the first bag body 1 presses the plastic sealing edge at the connection between the valve port 2 and the first bag body 1, and it is automatically sealed.

[0049] In this Embodiment 1, the melting point temperature of the material used for the first bag body 1 is 82 - 88 °C. With a low melting point, when the filled chlorinated polyethylene is fed, it can be directly fed together with the valve bag, which is environmentally friendly and non-toxic and does not affect the use of chlorinated polyethylene.

[0050] Embodiment 2, based on the structure of the first bag body 1 in Embodiment 1, according to the structural requirements of the filling equipment, the position of the valve port 2 can be set at any position on the side of the first bag body 1, which can meet various types of filling equipment and has a wide application range.

[0051] Embodiment 3, as Figures 4-5 shown, a low-melting-point direct-injection valve bag for automatic canning of chlorinated polyethylene, based on the structure of Embodiment 1, includes a second bag body 6, and a bottom sealing edge 61 is provided at the bottom position of the second bag body 6.

[0052] The bottom sealing edge 61 adopts the same plastic sealing edge 110 structure as that at the sealing part 11, and is sealed by a dedicated plastic sealing equipment to further enhance the structural strength of the second bag body 6 and avoid leakage.

[0053] This kind of valve bag is overall in a cube shape, which is more beautiful and convenient for stacking.

[0054] For those of ordinary skill in the art, according to the teachings of the present utility model, without departing from the principles and spirit of the present utility model, the changes, modifications, substitutions, and deformations made to the embodiments still fall within the protection scope of the present utility model.

Claims

1. A chlorinated polyethylene automatic canning low melting point direct-drop valve bag, comprising an integrally formed first bag body (1), characterized in that: One end of the upper end of the first bag body (1) is fixedly connected to a valve port (2); both sides of the first bag body (1) along the width direction are provided with a plurality of exhaust groups (3) in a linear array; a plurality of anti-slip protrusion groups (4) are evenly spaced at a middle position of the first bag body (1) along the width direction; and a protrusion partition (5) is provided between each anti-slip protrusion group (4); A bottom fold line group (12) is provided at the bottom end of the first bag body (1), and side fold line groups (13) are provided on both side surfaces of the first bag body (1); The exhaust group (3) comprises a plurality of first air holes (31) arranged in a pentagonal shape, and a second air hole (32) is provided in the middle of the plurality of first air holes (31).

2. The low melting point direct-drop valve bag for automatic canning of chlorinated polyethylene according to claim 1, characterized in that: A seal (11) is provided at the middle position of the upper end of the first bag body (1), and a plurality of parallel plastic sealing edges (110) are provided at the seal (11).

3. The low melting point direct-drop valve bag for automatic canning of chlorinated polyethylene according to claim 2, characterized in that: A bag body connecting edge (14) is provided at one end of the seal (11), and the width of the bag body connecting edge (14) is 18-25 mm.

4. The low melting point direct-drop valve bag for automatic canning of chlorinated polyethylene according to claim 3, characterized in that: A valve port connecting edge (21) is provided at a position on the valve port (2) corresponding to the bag body connecting edge (14); the valve port connecting edge (21) and the bag body connecting edge (14) are fixedly connected together by plastic sealing; and the width of the valve port connecting edge (21) is 18-25 mm.

5. The low melting point direct drop valve bag for automatic canning of chlorinated polyethylene according to claim 4, characterized in that: The sizes of the first air holes (31) and the second air holes (32) are both set to 0.5-0.8 mm, the spacing between each pair of first air holes (31) in each exhaust group (3) and between each first air hole (31) and the second air hole (32) is both set to 0.4-0.6 cm, and the spacing between each pair of exhaust groups (3) is set to 1.4-1.6 cm.

6. The low melting point direct drop valve bag for automatic canning of chlorinated polyethylene according to claim 5, characterized in that: The anti-slip protrusion group (4) comprises a plurality of protrusions (41) arranged in a linear array at the middle position of the first bag body (1), and the shape of the protrusions (41) is set to be cylindrical.

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