CN220765209U - Built-in folding sealing structure of valve bag - Google Patents
Built-in folding sealing structure of valve bag Download PDFInfo
- Publication number
- CN220765209U CN220765209U CN202322629790.7U CN202322629790U CN220765209U CN 220765209 U CN220765209 U CN 220765209U CN 202322629790 U CN202322629790 U CN 202322629790U CN 220765209 U CN220765209 U CN 220765209U
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- Prior art keywords
- sealing part
- valve port
- folding
- bag body
- sealing
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- 238000007789 sealing Methods 0.000 title claims description 123
- 230000007306 turnover Effects 0.000 claims abstract description 24
- 239000010410 layer Substances 0.000 claims description 62
- 239000011229 interlayer Substances 0.000 claims description 37
- 238000005452 bending Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 abstract description 27
- 239000010408 film Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 10
- 230000004888 barrier function Effects 0.000 description 9
- 239000010409 thin film Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
Landscapes
- Bag Frames (AREA)
Abstract
The application relates to the technical field of valve pockets, especially, relate to a built-in folding seal structure of valve port bag, it includes bag body top seal portion, the valve port is installed to bag body top seal portion, the valve port is used for filling, bag body top seal portion inboard is provided with turns over a piece, turn over a piece and be used for turning over the tip of covering the valve port. The valve port position can be improved, and the problem of powder leakage is easy.
Description
Technical Field
The application relates to the technical field of valve bags, in particular to a built-in folding sealing structure of a valve bag.
Background
The valve bag, commonly called as a bottom pasting bag, generally comprises a bag body and a valve port, is a current international popular packaging bag, is fed from the top or bottom valve port, adopts special filling equipment, is filled with powder and then is packaged into a square body, and is orderly and attractive in stacking, and widely applied to packaging of powdery or granular solid powder such as edible powder, grains, salt, chemical powder, chemical fertilizer, synthetic materials, explosive, mineral substances and the like.
The Chinese patent application with the bulletin number of CN219030330U discloses a valve port bag, which comprises a bag body and a valve port, wherein a triangular folding surface is arranged at the bag opening of the bag body, and the valve port is positioned right above the triangular folding surface, and is characterized in that: the outer end of the lower side surface of the valve port is partially adhered to the triangular folded surface of the bag body through hot melting or glue.
However, the related art described above has the following problems: when filling is completed, the valve port is usually closed by using the pressure of powder in the valve port, however, as the valve port in the related art is made of an open structure, part of powder is inevitably overflowed from the position of the valve port in the process of storage or transportation, so that the problem of powder leakage is solved.
Disclosure of Invention
In order to solve the problem that powder is easy to leak at the valve port position, the application provides a built-in folding type sealing structure of a valve port bag.
In a first aspect, the present application provides a valve bag with a built-in folding sealing structure, which adopts the following technical scheme:
the utility model provides a built-in folding seal structure of valve port bag, includes bag body top seal portion, the valve port is installed to bag body top seal portion, the valve port is used for filling, bag body top seal portion inboard is provided with turns over a piece, turn over a piece and be used for turning over the tip of covering the valve port.
Through adopting above-mentioned technical scheme, when fully accomplishing, the piece of turning over of bag body top seal portion can turn over the tip of covering the valve port to seal the valve port, cooperate the powder to the pressure of turning over the piece compress tightly the valve port position, improve the easy problem of leaking of valve port position powder.
Preferably, the turnover piece is a turnover paper layer, the turnover paper layer is fixedly arranged on the inner side of the top sealing part of the bag body, one end of the turnover paper layer, facing the valve port, is provided with a turnover part, and the turnover part is used for turnover and covering the valve port.
By adopting the technical scheme, in the powder filling process, the powder can push the turnover part of the turnover paper layer to turn over, and when the powder is filled, the powder is covered at the valve port position to seal the valve port and is matched with the powder to compress, so that the effect that the turnover part is used for turnover and covering the end part of the valve port is realized.
Preferably, the folded paper layer is provided with a folded line, and the folded paper layer forms a folded part after being folded along the folded line.
Through adopting above-mentioned technical scheme, the setting of turning over the paper layer can make the turning over the portion and turn over the portion around the line of turning over in the in-process of filling powder, has realized the effect of turning over the portion.
Preferably, the top sealing part of the bag body comprises a first sealing part, a second sealing part, a third sealing part and a fourth sealing part, wherein the first sealing part, the second sealing part, the third sealing part and the fourth sealing part are used for sealing the top of the bag body, the first sealing part and the second sealing part are subjected to relative bending treatment, and the third sealing part and the fourth sealing part are subjected to relative bending treatment; the valve port is arranged among the first sealing part, the third sealing part and the fourth sealing part.
Through adopting above-mentioned technical scheme, the in-process of manufacturing valve pocket first closing part, second closing part fold earlier, then set up the valve port in first closing part department to fold third closing part and fourth closing part, the tip overlap joint of third closing part is fixed in bonding after the fourth closing part this moment, and third closing part and fourth closing part cooperation carry out overlap joint to the valve port bag and seal, thereby make third closing part and fourth closing part both ends all bond fixedly with first closing part, second closing part, thereby realize the setting of sealing at valve port bag top.
Preferably, the top sealing part of the bag body comprises a first paper interlayer, a film interlayer, a second paper interlayer and a third paper interlayer, and the first paper interlayer, the film interlayer, the second paper interlayer and the third paper interlayer are sequentially arranged from inside to outside.
Through adopting above-mentioned technical scheme, set up three-layer paper interlayer, can improve the bulk strength of the bag body, make the bag body be difficult for taking place to destroy in use or handling. Meanwhile, the thin film interlayer is arranged, so that water can be isolated from the inner side and the outer side of the bag body, and the inside of the valve port bag is not easy to invade water vapor to damage powder.
Preferably, the third paper interlayer in the third sealing part extends to form an extension section, and the extension section is adhered to the third paper interlayer in the fourth sealing part.
Through adopting above-mentioned technical scheme, through setting up the epitaxial section, can further strengthen the bonding stability between third sealing portion and the fourth sealing portion to improve the sealing stability of bag body top sealing portion.
Preferably, the valve port comprises an inner lining paper layer and a film layer, the film layer is clamped between the inner lining paper layer and the bag body top sealing part, and the length of the film layer along the length direction of the bag body top sealing part is longer than that of the inner lining paper layer along the length direction of the bag body top sealing part.
Through adopting above-mentioned technical scheme, when the filling is accomplished, the staff pulls out the filling pipeline, and the filling pipeline rubs the thin film layer this moment to drive the thin film layer and roll, the thin film layer of rolling can cooperate the inside lining ply to seal folding, thereby further increase the sealing performance of valve port, reduce the bulk cargo.
Preferably, the inner lining paper layer is provided with an outer fold line, and the inner lining paper layer is folded in half along the outer fold line to form the protection part.
Through adopting above-mentioned technical scheme, the setting of protection part can increase the thickness that the inside lining ply is located the valve port position to can improve the life of memory ply, and carry out folding protection to the thin film layer.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the bag body is fully completed, the turnover piece of the bag body top sealing part can turn over the end part of the covering valve port, so that the valve port is sealed, the position of the valve port is pressed by matching with the pressure of powder to the turnover piece, and the problem that the position of the valve port is easy to leak powder is solved;
2. in the process of manufacturing the valve pocket, the first sealing part and the second sealing part are folded, then the valve port is arranged at the first sealing part, the third sealing part and the fourth sealing part are folded, at the moment, the end part of the third sealing part is lapped on the fourth sealing part and then is adhered and fixed, and the third sealing part and the fourth sealing part are matched to lap and seal the valve port pocket, so that the two ends of the third sealing part and the fourth sealing part are adhered and fixed with the first sealing part and the second sealing part, and the sealing arrangement of the top part of the valve port pocket is realized;
3. when the filling is finished, the staff pulls out the filling pipeline, and the filling pipeline rubs the film layer at the moment to drive the film layer to roll, the film layer of rolling can seal the folding in cooperation with the lining paper layer, thereby further increasing the sealing performance of valve port, reduces the bulk cargo.
Drawings
Fig. 1 is a state diagram of the top seal of the bag body of the present application.
Fig. 2 is a state diagram of the bag body top seal in the present application after opening.
Fig. 3 is to show a specific layered structure in the third seal portion and the fourth seal portion in the present application.
Fig. 4 is an enlarged view of a portion a in fig. 2.
Reference numerals illustrate: 1. a top sealing part of the bag body; 2. a valve port; 21. lining paper layer; 22. a thin film layer; 23. an outer fold line; 3. folding the paper layer; 31. a turnover part; 32. turning over the folding line; 4. a first sealing part; 5. a second sealing part; 6. a third seal portion; 7. a fourth sealing part; 8. a first paper barrier; 9. a second paper barrier; 10. a third paper barrier; 11. a thin film barrier layer.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-4.
The embodiment of the application discloses a built-in folding type sealing structure of a valve bag. Referring to fig. 1 and 2, a built-in folding type sealing structure of a valve port bag comprises a bag body top sealing part 1, a valve port 2 is installed on the bag body top sealing part 1, the valve port 2 is used for filling materials, a turnover piece is arranged on the inner side of the bag body top sealing part 1 and used for turning over and covering the end part of the valve port 2.
Referring to fig. 2, the bag top seal 1 includes a first seal 4, a second seal 5, a third seal 6, and a fourth seal 7. The first sealing portion 4 is disposed opposite to the second sealing portion 5, and the third sealing portion 6 is disposed opposite to the fourth sealing portion 7. The valve port 2 is glued between the first sealing part 4, the third sealing part 6 and the fourth sealing part 7.
Referring to fig. 2 and 3, the folded piece is a folded paper layer 3, and the folded paper layer 3 is fixedly arranged outside the second sealing part 5 by adhesive. Further, a turnup portion 31 is provided at one end of the turnup paper layer 3 facing the valve port 2, and the turnup portion 31 is used for turnup covering the valve port 2. Specifically, the folded paper layer 3 is provided with a fold line 32, and the folded paper layer 3 forms a folded portion 31 after being folded along the fold line 32. In the process of turning over, the turning over part 31 can cover the end part of the valve port 2 through turning over, so that the sealing arrangement of the turning over part 31 to the valve port 2 is realized by matching with the extrusion of powder to the turning over part 31.
In the process of manufacturing the valve pocket, the first sealing part 4 is folded in half towards the second sealing part 5, and then the second sealing part 5 is folded towards the first sealing part 4; then fixing the valve port 2 on the outer side of the first sealing part 4, then gluing and fixing the folded paper layer 3 on the outer side of the second sealing part 5, and respectively gluing the two ends of the valve port 2 on the inner side of the third sealing part 6 and the inner side of the fourth sealing part 7; and finally, the fourth sealing part 7 is folded, and the third sealing part 6 is folded towards the position of the fourth sealing part 7 so as to seal the top of the bag body.
In the process of filling powder, the inventor finds that powder is filled into the valve port 2 bag firstly, and powder is filled into the valve port 2 bag in a pneumatic way when filling, so that partial air is filled into the valve port 2 bag when the powder filling is finished, and a process of exhausting gas is carried out at the moment, and the turnover part arranged at the moment can be turned over under the driving of the gas, so that the valve port 2 can be covered, the sealing arrangement of the valve port 2 is realized, the problem that the powder is easy to leak from the position of the valve port 2 is solved, and the powder leakage can be reduced in the process of storing or transporting.
Further, referring to fig. 1 and 3, the top sealing portion 1 of the bag body includes a first paper interlayer 8, a second paper interlayer 9, a third paper interlayer 10 and a film interlayer 11 made of a PE film, and the first paper interlayer 8, the film interlayer 11, the second paper interlayer 9 and the third paper interlayer 10 are sequentially arranged from inside to outside, so that the overall strength of the bag body can be improved, and the bag body is not easy to be destroyed in the use or transportation process. Meanwhile, due to the water-proof property of the PE film, the water-proof effect can be achieved on the inner side and the outer side of the bag body, and the drying inside the bag body is kept.
Referring to fig. 3, the first paper barrier 8, the second paper barrier 9 and the third paper barrier 10 in the third sealing portion 6 are arranged in a stepwise incremental dislocation, and the film barrier 11 in the third sealing portion 6 is aligned and overlapped with the second paper barrier 9. Correspondingly, the first paper interlayer 8 and the film interlayer 11 in the fourth sealing part 7 are arranged in a stepwise decreasing staggered manner, and the film interlayer 11, the second paper interlayer 9 and the third paper interlayer 10 in the fourth sealing part 7 are aligned and overlapped.
Further, the extension section extends from the third paper interlayer 10 in the third sealing part 6, and when the third sealing part 6 is folded and overlapped with the fourth sealing part 7, the extension section is adhered to the third paper interlayer 10 in the fourth sealing part 7, so that the adhesion stability between the third sealing part 6 and the fourth sealing part 7 can be further enhanced, and the sealing stability of the top sealing part 1 of the bag body is improved.
Referring to fig. 2 and 4, the valve port 2 includes an inner liner paper layer 21 and a film layer 22, the film layer 22 is sandwiched between the inner liner paper layer 21 and the bag body top seal portion 1, and the length of the film layer 22 along the length direction of the bag body top seal portion 1 is greater than the length of the inner liner paper layer 21 along the length direction of the bag body top seal portion 1.
Further, the inner liner paper layer 21 is provided with an outer fold line 23, and the inner liner paper layer 21 is folded in half along the outer fold line 23 to form a protective portion. The film layer 22 is folded outwards along the non-folded inner liner paper layer 21. The thickness of the lining paper layer 21 at the position of the valve port 2 can be increased by inwards folding the lining paper layer 21 and the film layer 22, so that the service life of the lining paper layer can be prolonged, and the film layer 22 is folded and protected.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. The utility model provides a built-in folding seal structure of valve port bag which characterized in that: the automatic filling machine comprises a bag body top sealing part (1), wherein a valve port (2) is arranged on the bag body top sealing part (1), the valve port (2) is used for filling, a turnover piece is arranged on the inner side of the bag body top sealing part (1), and the turnover piece is used for turning over the end part of the valve port (2).
2. The valve bag built-in folding sealing structure according to claim 1, wherein: the folding piece is a folding paper layer (3), the folding paper layer (3) is fixedly arranged on the inner side of the bag body top sealing part (1), one end, facing the valve port (2), of the folding paper layer (3) is provided with a folding part (31), and the folding part (31) is used for folding and covering the valve port (2).
3. The valve bag built-in folding sealing structure according to claim 2, wherein: the folded paper layer (3) is provided with a folded line (32), and the folded paper layer (3) forms a folded part (31) after being folded along the folded line (32).
4. The valve bag built-in folding sealing structure according to claim 1, wherein: the top sealing part (1) of the bag body comprises a first sealing part (4), a second sealing part (5), a third sealing part (6) and a fourth sealing part (7) which are used for sealing the top of the bag body, wherein the first sealing part (4) and the second sealing part (5) are subjected to relative bending treatment, and the third sealing part (6) and the fourth sealing part (7) are subjected to relative bending treatment; the valve port (2) is arranged among the first sealing part (4), the third sealing part (6) and the fourth sealing part (7).
5. The valve bag built-in folding sealing structure according to claim 4, wherein: the bag body top sealing part (1) comprises a first paper interlayer (8), a film interlayer (11), a second paper interlayer (9) and a third paper interlayer (10), wherein the first paper interlayer (8), the film interlayer (11), the second paper interlayer (9) and the third paper interlayer (10) are sequentially arranged from inside to outside.
6. The valve bag built-in folding sealing structure according to claim 5, wherein: the third paper interlayer (10) in the third sealing part (6) is extended with an extension section, and the extension section is adhered to the third paper interlayer (10) in the fourth sealing part (7).
7. The valve bag built-in folding sealing structure according to claim 1, wherein: the valve port (2) comprises an inner lining paper layer (21) and a film layer (22), wherein the film layer (22) is clamped between the inner lining paper layer (21) and the bag body top sealing part (1), and the length of the film layer (22) along the length direction of the bag body top sealing part (1) is greater than the length of the inner lining paper layer (21) along the length direction of the bag body top sealing part (1).
8. The valve bag built-in folding seal structure of claim 7, wherein: the lining paper layer (21) is provided with an outer fold line (23), and the lining paper layer (21) is folded in half along the outer fold line (23) to form a protection part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322629790.7U CN220765209U (en) | 2023-09-27 | 2023-09-27 | Built-in folding sealing structure of valve bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322629790.7U CN220765209U (en) | 2023-09-27 | 2023-09-27 | Built-in folding sealing structure of valve bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220765209U true CN220765209U (en) | 2024-04-12 |
Family
ID=90602525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322629790.7U Active CN220765209U (en) | 2023-09-27 | 2023-09-27 | Built-in folding sealing structure of valve bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220765209U (en) |
-
2023
- 2023-09-27 CN CN202322629790.7U patent/CN220765209U/en active Active
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