Valve bag with double-layer structure

Abstract

The valve bag of the double-layer structure comprises a bag body and a valve port, the bag body comprises an outer-layer bag body and an inner-layer bag body, the inner-layer bag body is arranged in the outer-layer bag body, the valve port is arranged on one side of the inner-layer bag body, a notch is formed in one side of the outer-layer bag body, the valve port penetrates through the notch and is arranged on one side of the outer-layer bag body, and the valve port is arranged on the other side of the outer-layer bag body. The inner-layer bag body comprises a buffer layer, a damp-proof layer and a thin film layer, the damp-proof layer is arranged on the outer side of the thin film layer, the buffer layer is arranged on the outer side of the damp-proof layer, and a sealing assembly is arranged between the outer-layer bag body and the valve port. According to the valve bag, the outer-layer bag body and the inner-layer bag body are arranged, and the double-layer structure design of the inner-layer bag body and the outer-layer bag body is adopted, so that the valve bag has higher strength, wear resistance and humidity resistance, materials in the bag can be better protected, and the safety and integrity of packaged materials are improved; according to the valve bag, a user can conveniently open a valve port, and meanwhile, the user can conveniently conduct secondary sealing on the opened valve bag.

Description

Technical Field

[0001] The utility model relates to the technical field of valve bags, and particularly relates to a valve bag with a double-layer structure. Background Art

[0002] Valve bags, commonly known as bottom-sealed bags, are internationally popular packaging bags. They are fed from the top or bottom valve openings and use special filling equipment. After filling the materials, they are formed into cubes and stacked neatly and beautifully. They belong to environmentally friendly bags. Valve-type packaging bags are widely used in the production of powders such as "stone powder, gypsum powder, mud powder, cement powder", etc. For materials such as ultra-fine powder particles and granular materials, such as fine chemical raw materials, pharmaceutical chemical raw materials, and even foods such as flour and food seasonings, the packaging mode has gradually changed from the previous manual packaging mode to the current semi-automatic or fully automatic machine packaging. Valve bags are widely used because of their high automatic filling efficiency, accurate metering, and less manpower input.

[0003] However, the existing valve bags usually adopt a single-layer structure, which has certain deficiencies in terms of strength, wear resistance, and moisture-proof performance. Especially during transportation and storage, they are prone to damage, affecting the safety and integrity of the packaged goods. Moreover, when using valve bags, particles or powders are usually poured into the valve bags through equipment, and then the entrances and exits of the valve bags are fixed by means of high-temperature sealing or stitching. However, when opening in this way, tools such as scissors are usually needed to open. When the materials in the valve bag are not used up at one time, the valve bag cannot be re-sealed, which easily leads to the invalidation of the internal materials. Therefore, it is urgent to design a valve bag with a double-layer structure to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a valve bag with a double-layer structure to solve the above deficiencies in the prior art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A valve bag with a double-layer structure includes a bag body and a valve opening. The bag body includes an outer bag body and an inner bag body. The inner bag body is arranged inside the outer bag body. The valve opening is arranged on one side of the inner bag body. A notch is formed on one side of the outer bag body, and the valve opening passes through the notch and is arranged on one side of the outer bag body. The inner bag body includes a buffer layer, a moisture-proof layer, and a film layer. The moisture-proof layer is arranged outside the film layer, and the buffer layer is arranged outside the moisture-proof layer. A sealing component is arranged between the outer bag body and the valve opening.

[0007] Preferably, the sealing assembly includes a fixed shell, a clamping block, a U-shaped clamping plate and a sealing strip. A slot is formed on one side of the fixed shell, and an installation cavity is arranged inside the fixed shell. The installation cavity is located below the slot. The clamping block is movably inserted into the slot. The U-shaped clamping plate is slidably installed in the installation cavity. One end of the U-shaped clamping plate is clamped with one side of the clamping block. Two springs are arranged between the U-shaped clamping plate and the bottom of the inner wall of the installation cavity. The sealing strip is arranged at the upper side corner of the outer bag body. The clamping block is fixedly installed on one side of the valve opening. The fixed shell is fixedly installed on the upper side of the outer bag body.

[0008] Preferably, a chute is formed on the upper side of the fixed shell, and two limit chutes are formed on the bottom of the inner wall of the chute. Two limit sliding rods are fixedly installed at the other end of the U-shaped clamping plate. Two pressing blocks are fixedly installed on the upper sides of the two limit sliding rods. The pressing blocks are slidably installed in the chute.

[0009] Preferably, two guiding columns are fixedly installed on the bottom of the inner wall of the installation cavity. Two guiding grooves are formed on the lower side of the U-shaped clamping plate. The two guiding columns are respectively slidably installed in the two guiding grooves.

[0010] Preferably, a first chamfered surface is arranged at one end of the U-shaped clamping plate, and a second chamfered surface is arranged at one end of the clamping block. The first chamfered surface corresponds to the second chamfered surface.

[0011] Preferably, two handles are fixedly installed on one side of the outer bag body. The two handles are arranged vertically.

[0012] In the above technical solution, the beneficial effects of the valve bag with a double-layer structure provided by the present utility model are as follows:

[0013] (1) By providing the outer bag body and the inner bag body, through the double-layer structure design of the inner bag body and the outer bag body, the valve bag has higher strength, wear resistance and moisture-proof performance, so as to better protect the materials in the bag and improve the safety and integrity of the package.

[0014] (2) By providing the sealing assembly, the valve bag is convenient for the user to open the valve opening, and at the same time, it is convenient for the user to perform secondary sealing on the opened valve bag, thus effectively solving the problem that the existing valve bag cannot be secondarily sealed when the internal materials are not used up at one time, which easily causes the internal materials to fail.

[0015] (3) By providing the handles, it is convenient for the user to carry out handling operations on the valve bag, thus improving the convenience and practicality of the valve bag during use. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Schematic structural diagram of the closed valve pocket provided for an embodiment of a double-layer valve pocket of the present utility model.

[0018] Figure 2 Schematic left view structural diagram of the valve pocket provided for an embodiment of a double-layer valve pocket of the present utility model.

[0019] Figure 3 Schematic structural diagram of the opened valve provided for an embodiment of a double-layer valve pocket of the present utility model.

[0020] Figure 4 Schematic sectional structural diagram of the sealing component provided for an embodiment of a double-layer valve pocket of the present utility model.

[0021] Figure 5 Schematic sectional structural diagram of the bag body provided for an embodiment of a double-layer valve pocket of the present utility model.

[0022] Figure 6 Schematic structural diagram of the inner bag body provided for an embodiment of a double-layer valve pocket of the present utility model.

[0023] 1. Bag body; 2. Valve opening; 3. Sealing component; 4. Handle; 5. Fixed shell; 7. Block; 8. Slot; 9. Installation cavity; 10. Slide groove; 11. U-shaped clamping plate; 12. Spring; 13. Guide post; 14. First chamfered surface; 15. Second chamfered surface; 16. Pressing block; 17. Limit sliding rod; 18. Limit slide groove; 19. Sealing strip; 20. Outer bag body; 21. Inner bag body; 22. Notch; 23. Buffer layer; 24. Moisture-proof layer; 25. Film layer. Detailed implementation manners

[0024] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the following will further introduce the present utility model in detail in conjunction with the drawings.

[0025] Such as Figure 1-6As shown in the figure, a valve bag with a double-layer structure provided by an embodiment of the present utility model includes a bag body 1 and a valve port 2. The bag body 1 includes an outer bag body 20 and an inner bag body 21. The inner bag body 21 is disposed inside the outer bag body 20. The valve port 2 is disposed on one side of the inner bag body 21. A notch 22 is formed on one side of the outer bag body 20, and the valve port 2 passes through the notch 22 and is disposed on one side of the outer bag body 20. The inner bag body 21 includes a buffer layer 23, a moisture-proof layer 24, and a film layer 25. The moisture-proof layer 24 is disposed outside the film layer 25, and the buffer layer 23 is disposed outside the moisture-proof layer 24. A sealing component 3 is disposed between the outer bag body 20 and the valve port 2.

[0026] Specifically, in this embodiment, the outer bag body 20 is made of polypropylene woven fabric, so that the valve bag has good wear resistance and moisture-proof performance. The film layer 25 is made of polyethylene film, and the moisture-proof layer 24 is an aluminum foil composite film, which can further improve the moisture-proof performance of the valve bag. The buffer layer 23 is made of rubber or silica gel, which can make the valve bag have good impact resistance. The upper and lower peripheries of the inner bag body 21 are adhered to the inner wall peripheries of the outer bag body 20 by glue. At the same time, a sealing glue is coated between the valve port 2 and the notch.

[0027] For the valve bag with a double-layer structure provided by the present utility model, the sealing component 3 includes a fixed shell 5, a clamping block 7, a U-shaped clamping plate 11, and a sealing strip 19. A slot 8 is formed on one side of the fixed shell 5. An installation cavity 9 is disposed inside the fixed shell 5, and the installation cavity 9 is located below the slot 8. The clamping block 7 is movably inserted into the slot 8. The U-shaped clamping plate 11 is slidably installed in the installation cavity 9. One end of the U-shaped clamping plate 11 is clamped to one side of the clamping block 7. Two springs 12 are disposed between the U-shaped clamping plate 11 and the bottom of the inner wall of the installation cavity 9. The sealing strip 19 is disposed at the upper side corner of the outer bag body 20. The clamping block 7 is fixedly installed on one side of the valve port 2. The fixed shell 5 is fixedly installed on the upper side of the outer bag body 20. A chute 10 is formed on the upper side of the fixed shell 5. Two limit chutes 18 are formed on the bottom of the inner wall of the chute 10. Two limit sliding rods 17 are fixedly installed at the other end of the U-shaped clamping plate 11. Two pressing blocks 16 are fixedly installed on the upper sides of the two limit sliding rods 17. The pressing blocks 16 are slidably installed in the chute 10. A first chamfered surface 14 is disposed at one end of the U-shaped clamping plate 11, and a second chamfered surface 15 is disposed at one end of the clamping block 7. The first chamfered surface 14 corresponds to the second chamfered surface 15.

[0028] In another embodiment of the utility model, when the valve port 2 needs to be opened, the pressing block 16 is pressed so that the pressing block 16 drives the limiting sliding rod 17 to move along the limiting sliding groove 18. The movement of the limiting sliding rod 17 can drive the U-direction clamping plate 11 to move. The limiting sliding groove 18 and the limiting sliding rod 17 can improve the smoothness of the movement of the pressing block 16 and the U-direction clamping plate 11. Then, the U-direction clamping plate 11 moves downward to release the clamping fixation of the clamping block 7. At this time, the valve port 2 is pulled outward so that the valve port 2 drives the clamping block 7 to disengage from the slot 8, thereby opening the valve port 2. When the valve port 2 needs to be sealed for a second time, the valve port 2 is folded upward, and the clamping block 7 is inserted into the slot 8. Then, when the second chamfered surface 15 at one end of the block 7 contacts the first chamfered surface 14 at one end of the U-direction card plate 11, the second chamfered surface 15 and the inclined surface of the first chamfered surface 14 enable the block 7 to squeeze the U-direction card plate 11, and the U-direction card plate 11 can squeeze the spring 12 to automatically move downward. Then, when the card slot on the rear side of the block 7 is aligned with the U-direction card plate 11, the elastic force of the spring 12 can drive the U-direction card plate 11 to move upward and fit with the card slot to fix the block 7. At the same time, when the valve port 2 is folded, the sealing strip 19 will tightly squeeze one side of the valve port 2, so that the valve port 2 is tightly fitted on both sides, thereby making the valve port tightly sealed, wherein the sealing strip 19 is made of rubber.

[0029] The utility model provides a double-layer valve bag, in which two guide posts 13 are fixedly installed at the bottom of the inner wall of the installation cavity 9, and two guide grooves are provided at the lower side of the U-shaped clamping plate 11, and the two guide posts 13 are slidably installed in the two guide grooves respectively.

[0030] In another embodiment provided by the utility model, when the U-shaped cardboard 11 moves, the U-shaped cardboard 11 slides along the guide column 13 through the guide groove, and the guide column 13 and the guide groove can further improve the smoothness and stability of the U-shaped cardboard 11 when moving.

[0031] The utility model provides a double-layer valve bag, one side of the outer bag body 20 is fixedly mounted with two handles 4, and the two handles 4 are arranged up and down.

[0032] In another embodiment provided by the utility model, when the valve bag needs to be carried, the valve bag can be lifted by pulling the handle 4, so that the user can carry the valve bag conveniently, and when the user needs to pour out the internal materials, the two handles 4 can be pulled to different heights by both hands to tilt the valve bag, so as to pour out the internal materials.

[0033] Working principle: When in use, since the outer bag body 20 is made of high-strength material, the outer bag body 20 can effectively protect the inner bag body 21, preventing the valve bag from bursting during use. Then, since the inner bag body 21 adopts a buffer layer 23 and a moisture-proof layer 24, it can provide buffering performance during the use of the valve bag, improving the overall impact resistance of the valve bag, and can further improve the moisture-proof performance during the use of the valve bag, better protecting the materials inside the bag. Then, through the sealing component 3, it is convenient for users to open the valve port 2 and can also facilitate users to perform secondary sealing on the opened valve port 2, realizing the reuse of the valve bag. Moreover, when the internal materials are not completely used up at one time, the valve bag can be secondarily sealed through the sealing component 3 to prevent the problem of the internal materials becoming ineffective, improving the practicality during the use of the valve bag.

[0034] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A double-layer valve bag, comprising a bag body (1) and a valve port (2), characterized in that: The bag body (1) comprises an outer bag body (20) and an inner bag body (21); the inner bag body (21) is arranged inside the outer bag body (20); the valve opening (2) is arranged on one side of the inner bag body (21); a notch (22) is opened on one side of the outer bag body (20); and the valve opening (2) passes through the notch (22) and is arranged on one side of the outer bag body (20); the inner bag body (21) comprises a buffer layer (23), a moisture-proof layer (24) and a film layer (25); the moisture-proof layer (24) is arranged on the outside of the film layer (25); the buffer layer (23) is arranged on the outside of the moisture-proof layer (24); and a sealing component (3) is arranged between the outer bag body (20) and the valve opening (2).

2. A double-layer valve bag according to claim 1, characterized in that: The sealing assembly (3) comprises a fixed shell (5), a clamping block (7), a U-shaped clamping plate (11) and a sealing strip (19); a slot (8) is provided on one side of the fixed shell (5); a mounting cavity (9) is provided in the fixed shell (5); the mounting cavity (9) is located at the lower side of the slot (8); the clamping block (7) is movably inserted in the slot (8); the U-shaped clamping plate (11) is slidably installed in the mounting cavity (9); one end of the U-shaped clamping plate (11) is clamped with one side of the clamping block (7); two springs (12) are provided between the U-shaped clamping plate (11) and the bottom of the inner wall of the mounting cavity (9); the sealing strip (19) is provided at the upper corner of the outer bag body (20); the clamping block (7) is fixedly installed on one side of the valve port (2); and the fixed shell (5) is fixedly installed on the upper side of the outer bag body (20).

3. A double-layer valve bag according to claim 2, characterized in that: A slide groove (10) is provided on the upper side of the fixed shell (5), and two limit slide grooves (18) are provided at the bottom of the inner wall of the slide groove (10). Two limit sliding rods (17) are fixedly installed on the other end of the U-shaped clamping plate (11), and a pressing block (16) is fixedly installed on the upper side of the two limit sliding rods (17), and the pressing block (16) is slidably installed in the slide groove (10).

4. The double-layer valve bag according to claim 2, characterized in that: Two guide columns (13) are fixedly mounted on the bottom of the inner wall of the installation cavity (9), and two guide grooves are provided on the lower side of the U-shaped clamping plate (11), and the two guide columns (13) are respectively slidably mounted in the two guide grooves.

5. The double-layer valve bag according to claim 2, characterized in that: A first chamfered surface (14) is provided at one end of the U-shaped clamping plate (11), and a second chamfered surface (15) is provided at one end of the clamping block (7), wherein the first chamfered surface (14) corresponds to the second chamfered surface (15).

6. The double-layer valve bag according to claim 1, characterized in that: Two handles (4) are fixedly mounted on one side of the outer bag body (20), and the two handles (4) are arranged up and down.

Images