WO2010116198A4 - Valve bag and method for filling the bag - Google Patents
Valve bag and method for filling the bag Download PDFInfo
- Publication number
- WO2010116198A4 WO2010116198A4 PCT/HU2010/000038 HU2010000038W WO2010116198A4 WO 2010116198 A4 WO2010116198 A4 WO 2010116198A4 HU 2010000038 W HU2010000038 W HU 2010000038W WO 2010116198 A4 WO2010116198 A4 WO 2010116198A4
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- valve bag
- filling
- bag
- granular product
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract 32
- 238000013022 venting Methods 0.000 claims abstract 50
- 239000000428 dust Substances 0.000 claims abstract 30
- 238000005429 filling process Methods 0.000 claims abstract 24
- 239000000203 mixture Substances 0.000 claims abstract 10
- 239000007787 solid Substances 0.000 claims abstract 8
- 239000004033 plastic Substances 0.000 claims abstract 5
- 238000012856 packing Methods 0.000 claims abstract 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims 8
- 239000004568 cement Substances 0.000 claims 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims 4
- 239000000920 calcium hydroxide Substances 0.000 claims 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims 4
- 239000000292 calcium oxide Substances 0.000 claims 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims 4
- 230000035699 permeability Effects 0.000 claims 4
- 239000012815 thermoplastic material Substances 0.000 claims 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 2
- 239000011521 glass Substances 0.000 claims 2
- 239000008187 granular material Substances 0.000 claims 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims 2
- 229910052751 metal Inorganic materials 0.000 claims 2
- 239000002184 metal Substances 0.000 claims 2
- 239000011707 mineral Substances 0.000 claims 2
- -1 ore Substances 0.000 claims 2
- 239000004576 sand Substances 0.000 claims 2
- 239000004575 stone Substances 0.000 claims 2
- 229920001169 thermoplastic Polymers 0.000 claims 2
- 239000004416 thermosoftening plastic Substances 0.000 claims 2
- 238000005452 bending Methods 0.000 claims 1
- 239000000945 filler Substances 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000005381 potential energy Methods 0.000 claims 1
- 230000003068 static effect Effects 0.000 claims 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
- B65B1/18—Methods of, or means for, filling the material into the containers or receptacles for filling valve-bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/14—Valve bags, i.e. with valves for filling
- B65D31/145—Valve bags, i.e. with valves for filling the filling port being provided in a flat upper sealing-edge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/01—Ventilation or drainage of bags
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
- Packages (AREA)
Abstract
A packing method is provided, involving a plastic valve bag, which valve bag has a filling valve, and dust retaining venting means adapted to provide venting path for conducting air from an inside to an outside of the valve bag. The dust retaining venting means comprise, for dust retaining, one or both of porous filter means and venting channel, the latter comprising flexible walls adapted to be essentially parallel with each other and adjacent to each other, providing venting path between the flexible walls and essentially parallel with the flexible walls. In a filling process, a quantity of a filling mixture of a granular product and air, containing a predetermined filling mass, of the granular product, is filled into the valve bag through the filling valve. After the filling process the valve bag is put into a position suitable for a stacking thereof, and a quantity of air is conducted out there from through dust retaining venting means. In at least a part of a duration of the filling process the valve bag is vibrated. The filling mixture is filled slowly enough to provide a so-called upper venting place inside the valve bag, which, during the filling process, is either prevented from being reached by a level of, and thereby being filled up with, granular product being in one or both of a solid and a fluidized state, or is reached and filled up with such granular product earliest when the valve bag contains at least 70 percent of the filling mass of the granular product. In at least a part of the duration of the filling process, air is conducted out of the valve bag from the upper venting place.
Claims
1. A packing method in which
• a plastic valve bag is provided,
o the valve bag having a filling valve,
o the valve bag having dust retaining venting means adapted to provide venting path for conducting air from an inside of the valve bag to an outside of the valve bag,
o the dust retaining venting means comprising, for dust retaining, one or both of
■ porous filter means and
■ venting channel comprising flexible walls adapted to be essentially parallel with each other and adjacent to each other, providing venting path between the flexible walls and essentially parallel with the flexible walls,
• a filling mixture, comprising a mixture of a granular product and air, is provided, and
■ in a filling process a quantity of the filling mixture, containing a predetermined mass, a filling mass, of the granular product, is filled into the valve bag through the filling valve, and
• after the filling process the valve bag is put into a position suitable for a stacking thereof, and a quantity of air is conducted out there from through duat retaining venting means,
characterized in that
• in at least a part of a duration of the filling process the valve bag is vibrated, and
• the filling mixture is filled slowly enough to provide a place inside the valve bag, an upper venting place, which, during the filling process,
o is either prevented from being reached by a level of, and thereby being filled up with, granular product being in one or both of a solid and a fluidized state,
o or is reached by a level of, and thereby filled up with, granular product, being in one or both of a solid and a fluidized state, earliest when the valve bag contains at least 70 percent of the filling mass of the granular product, and
• in at least a part of the duration of the filling process, air is conducted out of lhe valve bag from the upper venting place.
2. The method according to claim 1, wberein air is being conducted out of the valve bag from the upper venting place in at least 10% of the duration of tbe filling process.
3. The method according to any of claims 1-2, wherein the upper venting place is, during the filling process, at most reached by a level of> and thereby filled up with, granular product, being in one or both of a soJid and a fluidized state, earliest when the valve bag contains at least 75 percent of the filling mass of the granular product.
4. The method according to any of claims 1-3, wherein the upper venting place is, during the filling process, prevented from being Teachθd by a level of, and thereby being filled up with, granular product being in one or both of a solid and a fluidized state,
5. The method according to any of claims 1-4, wherein at least 1 mass percent of the granular product has a granule size below 150 microns.
6. The method according to any of claims 1-5, wherein the granular product is suitable to be mixed with air and thereby to be rendered into, and to remain, at rest, at least for 30 seconds in an aerated state in which an apparent density of the granular product is at most 98% of an apparent density of the granular product in a fully compacted state thereof.
7. The method according to any of claims 1-6, wherein the valve bag is vibrated in at least 10 percent of the duration of the filling process.
8. The method according to any of claims 1-7, wherein at least one dust retaining venting means comprises venting channel for dust retaining.
9. The method according to any of claims 1-8, wherein the filling mass is between 4 and 55 kilograms and the filling mass divided by the duration of the filling process, an average filling speed, is between 0.08 kilograms per second and 2.3 kilograms per second.
10. The method according to any of claims 1-9, wherein a valve bag filling machine is provided and used for the filling process, which valve bag filling machine is provided with one or both of a feeding auger and a feeding impeller for a forwarding of the filling mixture.
11. The method according to claim 10, wherein the valve bag filling machine is provided with a feeding auger for a forwarding of the filling mixture.
12. The nicthod according to any of claims 1-11, wherein the provided valve bag
• either has dust retaining venting means adapted to conduct air from places of the valve bag which places are, during the first quarter of the duration of the filling process, reached by a level of, and thereby filled up with, granular product being in one or both of a solid and a fluidized state,
• or is free from such dust retaining venting means, and
• if the provided valve bag has such dust retaining venting means then a total air permeability of such dust retaining venting means of the provided valve bag is less than 1O m3/h.
13. The method according to any of claims 1-12, wherein the provided valve bag
• either has dust retaining venting means adapted to conduct air from places of the valve bag which places are, during the first half of the duration of the filling process, reached by a level of, and thereby filled up with, granular product being in one or both of a solid and a fluidized state,
• or is free from such dust retaining venting means, and
• if the provided valve bag has such dust retaining venting means then a total air permeability of such dust retaining venting means of the provided valve bag is less than 20 m3/h.
14. The method according to any of claims 1-13, wherein
• either the provided valve bag only has dust retaining venting means positioned in its filling valve,
• or in the provided valve bag a total air permeability of dust retaining venting means, being at places of the valve bag other than the filling valve, is less than 30 m3/h.
15. The method according to any of claims 1-14, wherein in at least a part of the duration of the filling process, air is conducted out of the valve bag from the upper venting place through the filling valve,
16. The method according to claim 15, wherein in at least a part of the duration of the filling process, air is conducted out of the valve bag from the upper venting place through the filling valve free from being exposed to a filtering by porous filter means.
17. The method according to any of claims 1-16, wherein a filling pipe is provided inserted in the filling valve hi a loose manner and thereby a gap, adapted to be permeable for the granular product being in the valve bag, is provided, at least in a part of the duration of the filling process, within the filling valve at least partly around the filling pipe, and the filling mixture is filled into the valve bag from the filling pipe, and air is conducted out from the upper venting place through the gap.
18. The method according to claim 17, wherein a total area of the gap is at most 70 cm2 and at least 0.1 cm2.
19. The method according to any of claims 17-18, wherein the provided gap is prevented from being reached by a level of, and thereby being filled up with, granular product being in one or both of a solid and a fluidized state.
20, The method according to claim 19, wherein such a valve bag is provided as is small enough to only be adapted to receive the filling mass of the granular product, and keep a level thereof under the gap, by at least a vibration of the valve bag.
21. The method according to any of claims 1-20, wherein a filling pipe is provided, and the filling mixture is filled through the filling valve into the valve bag from the filling pipe and, in at least a part of the duration of the filling process, air is conducted out of the valve bag from the upper venting place upward through the filling pipe.
22. The method according to claim 21, wherein an overpressure in the upper venting place is kept below 2 bars.
23. The method according to any of claims 1 -22, wherein the provided valve bag is of recyclable thermoplastic.
24. The method according to claim 23, wherein the valve bag at moat has such porous filter means as are of a thermoplastic material compatible with a thermoplastic material of a rest of the valve bag.
25. The method according to any of claims 23-24, wherein the granular product contains any one or more of cement, calcium oxide, calcium carbonate, calcium hydroxide, sand, mineral, stone, ore, metal and glass.
26. The method according to clahn 25, wherein the granular product contains any one or more of cement, calcium oxide, calcium carbonate and calcium hydroxide.
27. The method according to any of claims 25-26, wherein at least 1 mass percent of the granular product is cement.
2$. The method according to any of claims 1-27, wherein after the filling process the filled valve bag is put into a position suitable for a stacking thereof, and is kept at rest in such a position at least for 60 seconds, while with gravity- sorting some air is separated from, and brought above, granular product in the valve bag, and is conducted out therefrom through dust retaining venting means and thereby an apparent density of the granular product in the valve bag is increased.
29, The method according to any of claims 1-28, wherein during and after the filling process less than a total of 40 g of granular product is accumulated in dust retaining venting means.
30. The method according to any of claims 1-29, wherein a plastic valve bag according to any of claims 31-44 is provided.
31. A plastic valve bag (I), for the packing method according to claim 1,
• having a filling valve (2)
o for a filling of the valve bag (1) with a granular product (50) and o for a closing of the valve bag (1) for retaining the granular product (50) in the valve bag (1),
• the filling valve (2) comprising an outer opening (3) and an inner opening (4) and a flexible valve tube (5) connecting the outer opening (3) and the inner opening (4), o the valve tube (5) collapsible for the closing of the valve bag (1), characterized in that
• the filling valve (2) has a flexible, porous filLer sheet (6) provided,
o the filter sheet (6) having two opposed major sheet surfaces (7), o the filter sheet (6) provided at least partly inside the valve tube (5), suitably fixed,
• the filling valve (2) adapted to provide, at a suitable open state of the valve tube (5), a filling path (8) inside the valve tube (5) beside the filter sheet (6) for the filling of the valve bag (1) through the outer opening (3) and through the inner opening (4), and
• the filling valve (2) adapted to provide., at a suitable collapsed state of the valve tube
(5), a venting path (9) for conducting air (51)
o inside the valve tube (5), at least partly through the filter sheet (6) essentially in a direction (10) parallel with the major sheet surfaces (7) of the filter sheet (6),
o from an inside (11) of the valve bag (1) to the outer opening (3) and there through to an outside (12) of the valve bag (1).
32. The valve bag (1) according to claim 31, wherein
• the filter sheet (6) has a stiffness lower than a stiffness of at least a part of the valve tube (5), and
• the filter sheet (6) has a marginal portion (13) adapted to be, at least at the collapsed state of the valve tube (5), inside the valve tube (5) and adjacent to the inner opening
(4), and
• at least parts of the major sheet surfaces (7) in the marginal portion (13) are free from direct attachment (14) with the valve tube (5).
33. The valve bag (1) according to any of claims 31-32, -wherein a bending length of a material of at least a part of the valve tube (5) is smaller than 600 mm and greater than 22.5 mm.
34. The valve bag (1) according to any of claims 31-33, wherein the valve bag (1) has an outer surface (15) having, at least partly, a static coefficient of friction higher than 0.30.
35. The valve bag (1) according to aoy of claims 31-34, wherein
• the valve bag (1) has bag side edges (60) and a center of mass (17), and
• the valve bag (1) has the filling valve (2) integrated into one of the bag side edges (60), and
• the filling valve (2) is adapted to provide, at a suitable open state of the valve tube (5), a filling path (8) for the filling of the valve bag (1) in a direction (10) of an essentially straight line (18) through the outer opening (3), through an inside (11) of the valve tube (5) and through the inner opening (4),
• the essentially straight line (18) adapted to cross the center of mass (17) of the valve bag (1).
36. The valve bag (1) according to any of claims 31-35, wherein
• either the valve bag (1) has dust retaining venting means (20)
o located in its parts other than lhe filling valve (2),
o providing venting path (9) for conducting air (51) from an inside (11) of the valve bag (1) to an outside (12) of the valve bag (1), o the dust retaining venting means (20) comprising, for dust retaining, one or both of
■ porous filter means (21) and
■ venting channel (22) comprising flexible walls (23) adapted to be essentially parallel with each other and adjacent to each other, providing venting path (9) between the flexible walls (23) and essentially parallel with the flexible walls (23),
• or the valve bag (1) is free from such dust retaining venting means (20),
• and if the valve bag (1) has such dust retaining venting means (20) then a total air permeability of such dust retaining venting means (20) is less than 30 m3/h.
37. The valve bag (1) according to claim 36, wherein the valve bag (1) is free from such dust retaining venting means (20).
38. The valve bag (1) according to any of claims 31-37, wherein parts of tbe valve bag (1) other than its filling valve (2) are essentially air impermeable.
39. The valve bag (1) according to any of claims 31-38, wherein the valve bag (1) is thermoplastic and at most has such porous filter means (21) as are of a thermoplastic material compatible with a thermoplastic material of a rest of the valve bag (1).
40. The valve bag (1) according to any of claims 31-39, wherein
• the valve bag (1) has a flexible bag wall (24),
• the valve bag (1) is adapted to be in a flat collapsed state suitable for a storing of the valve bag (1) before a filling thereof, the valve bag (1) essentially arranged in a plane, a flat collapsed plane (25) in its flat collapsed state, and
• the inner opening (4) is adapted to, at a collapsed state of the valve tube (5), be in a collapsed state forming an oblong collapsed inner opening (26) of the filling valve (2) having a collapsed inner opening length (27) and collapsed inner opening widths (28) normal to, and essentially smaller than, the collapsed inner opening length (27), and
• the valve bag (1) is one of o a block bottom valve bag (29) having at least one block bottom (30) having at least one block bottom width (31),
o a gusseted valve bag (32) free of block bottoms (30) and having at least one gusseted edge (33) having a gαsset (34) having at least one gusset depth (35), and
o a valve bag (1) free of block bottoms (30) and free of gusseted edges (33), and
• the valve bag (1) is adapted to, in a test,
o be placed, in its flat collapsed state, between two suitable solid and parallel planes, test planes (37), ρτovided for the test essentially parallel with the flat collapsed plane (25) of the valve bag (1) and with a clearance (38) between the test planes (37), the clearance (38) equaling
■ a smallest block bottom width (31) in the valve bag (1) if the valve bag (1) is a block bottom valve bag (29),
" a double of a smallest gusset depth (35) in the valve bag (1) if the valve bag (1) is a gusseted valve bag (32), and
■ 45 mm if the valve bag (1) is a valve bag (1) free of block bottoms (30) and gusseted edges (33), and
o be brought into a state inflated between the test planes (37)., an inflated state, with collapsed valve tube (5), with an internal overpressure of 50 mbar, and
o have parts of its bag wall (24), main abutting bag wall parts (19), contacting the test planes (37) at the inflated state of the valve bag (1), and o have one or more sections (40) of the collapsed inner opening (26) of the filling valve (2) adjacent to a main abutting bag wall part (19), a total length of the one or more sections (40) being at least 1% of the collapsed inner opening length (27).
41. The valve bag (1) according to claim 40, wherein a distance (42), between the adjacent main abutting bag wall part (19) and collapsed inner opening (26), is smaller than 3 mm.
42. The valve bag (1) according to claim 41, wherein the distance (42) is zero.
43. The valve bag (I) according to any of claims 40-42, wherein the valve bag (1) is adapted to, in the test,
• have the main abutting bag wall parts (19) bordered with borders (43) thereof and
• have one or τnore sections (40) of the collapsed inner opening (26) of the filling valve (2) adjacent to a main abutting bag wall part (19) and of a distance (42), from all borders (43) of the main abutting bag wall part (19), greater than 1 mm, a total length of the one or more sections (40) being at least 1% of the collapsed inner opening length (27).
44. The valve bag (1) according to any of claims 40-43, wherein at least a part of the valve tube (5) has an attachment (14) with a main abutting bag wall part (19).
45. A package (44) comprising a vented plastic valve bag (1) and therein contents (45) of a granular product (50) mixable with air, characterized in that it comprises a valve bag (1 ) according to any of claims 31 -44.
46. A package (44) according to claim 45, wherein at least 1 mass percent of the granular product (50) has a granule size below 150 microns.
47. A package (44) according to any of claims 45-46, wherein the granular product (50) is suitable to be mixed with air and thereby to be rendered into, and to remain, at rest, at least for 30 seconds, in an aerated state in which an apparent density of the granular product (50) is at most 98% of an apparent density of the granular product (50) in a fully compacted state.
48. A package (44) according to any of claims 45-47, wherein the granular product (50) contains any one or more of cement, calcium oxide, calcium carbonate, calcium hydroxide, sand, mineral, stone, ore, metal and glass.
49. A package (44) according to claim 48, wherein the granular product (50) contains any one or more of cement, calcium oxide, calcium carbonate and calcium hydroxide.
50. A package (44) according to claim 49, wherein at least I mass percent of the granular product (50) is cement.
51. A package (44) according to any of claims 45-50, wherein
• if the valve bag (1) has dust retaining venting means (20) other than in the filling valve (2) then the filling valve (2) and all the other dust retaining venting means (20) together contain a total quantity of accumulated granular product (50), and
• otherwise the filling valve (2) contains a total quantity of accumulated granular product (50),
• the total quantity of accumulated granular product (50) being less than 40 g.
52. A package (44) according to any of claims 45-51, wherein
• the valve bag (1 ) has a flexible bag wall (24),
• the inner opening (4) in the valve bag (1) is adapted to, at a collapsed state of the valve tube (5), be in a collapsed state forming an oblong collapsed inner opening
(26) of the filling valve (2) having a collapsed inner opening length (27) and collapsed inner opening widths (28) normal to, and essentially smaller than, the collapsed inner opening length (27), and
• the package (44) is adapted to, in a test,
o be kept laid down, on a horizontal table (46) provided for the test, in a position of a lowest potential energy, comprising the contents (45) of the granular product (50) in a compacted state thereof and with an essentially horizontal top surface (47) thereof, and
o have a part of its bag wall (24), a top bag wall part (48), essentially horizontal and above a rest of the package (44), and
o have one or more sections (40) of the collapsed inner opening (26) of the filling valve (2) adjacent to the top bag wall part (48), a total length of the said one or more sections (40) being at least 1% of the collapsed inner opening length (27).
53. A package (44) according to claim 52, wherein a distance (42) between the adjacent top bag wall part (48) and collapsed inner opening (26) is smaller than 3 mm.
54. Λ package (44) according to claim 53, wherein the distance (42) is zero.
55. A package (44) according to any of claims 52-54, wherein the package (44) is adapted to, in the test,
• have the top bag wall part (48) bordered with borders (43), and
• have one or more sections (40) of the collapsed inner opening (26) of the filling valve (2) adjacent to the top bag wall part (48) and of a distance (42), from all borders (43) of the said top bag wall part (48), greater than 1 mm, a total length of the one or more sections (40) being at least 1% of the collapsed inner opening length (27).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HUP0900208 | 2009-04-08 | ||
| HU0900208A HUP0900208A2 (en) | 2009-04-08 | 2009-04-08 | Packaging methods, valve bags and packages |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2010116198A1 WO2010116198A1 (en) | 2010-10-14 |
| WO2010116198A4 true WO2010116198A4 (en) | 2011-01-20 |
Family
ID=89988889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/HU2010/000038 WO2010116198A1 (en) | 2009-04-08 | 2010-04-07 | Valve bag and method for filling the bag |
Country Status (2)
| Country | Link |
|---|---|
| HU (1) | HUP0900208A2 (en) |
| WO (1) | WO2010116198A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108937281A (en) * | 2016-07-14 | 2018-12-07 | 韦雪 | A kind of novel air sofa |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB633593A (en) * | 1941-08-09 | 1949-12-19 | Billeruds Ab | An improvements in combined net-weighing and valve bag filling machines |
| EP0367769A1 (en) * | 1987-05-11 | 1990-05-16 | Wavin B.V. | Valve bag with venting means |
| SE509957C2 (en) * | 1994-10-10 | 1999-03-29 | Assidomaen Scandisack Asa | Procedure for filling a valve bag and valve bag |
| EP0767105B1 (en) * | 1995-10-02 | 1999-04-14 | Korsnäs Wilhelmstal GmbH Papiersackfabriken | Ventable cross-bottom valve-bag |
-
2009
- 2009-04-08 HU HU0900208A patent/HUP0900208A2/en unknown
-
2010
- 2010-04-07 WO PCT/HU2010/000038 patent/WO2010116198A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| HUP0900208A2 (en) | 2010-11-29 |
| HU0900208D0 (en) | 2009-05-28 |
| WO2010116198A1 (en) | 2010-10-14 |
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