US20220250804A1 - A metal screw cap for beverage bottle - Google Patents
A metal screw cap for beverage bottle Download PDFInfo
- Publication number
- US20220250804A1 US20220250804A1 US17/628,212 US201917628212A US2022250804A1 US 20220250804 A1 US20220250804 A1 US 20220250804A1 US 201917628212 A US201917628212 A US 201917628212A US 2022250804 A1 US2022250804 A1 US 2022250804A1
- Authority
- US
- United States
- Prior art keywords
- screw cap
- dome
- radius
- bottle
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 235000013361 beverage Nutrition 0.000 title claims abstract description 13
- 239000002184 metal Substances 0.000 title claims abstract description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
- 238000007789 sealing Methods 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 239000001569 carbon dioxide Substances 0.000 description 5
- 235000014171 carbonated beverage Nutrition 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000009928 pasteurization Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
Images
Classifications
-
- 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
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
- B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
- B65D41/348—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt the tamper element being rolled or pressed to conform to the shape of the container, e.g. metallic closures
-
- 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
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
- B65D41/04—Threaded or like caps or cap-like covers secured by rotation
- B65D41/0435—Threaded or like caps or cap-like covers secured by rotation with separate sealing elements
- B65D41/0442—Collars or rings
-
- 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
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
- B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
- B65D41/3404—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with ratchet-and-pawl mechanism between the container and the closure skirt or the tamper element
- B65D41/3409—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with ratchet-and-pawl mechanism between the container and the closure skirt or the tamper element the tamper element being integrally connected to the closure by means of bridges
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00018—Overall construction of the lid
- B65D2543/00259—Materials used
- B65D2543/00277—Metal
-
- 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
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
- B65D41/04—Threaded or like caps or cap-like covers secured by rotation
- B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
- B65D41/0414—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck
-
- 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
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
- B65D41/04—Threaded or like caps or cap-like covers secured by rotation
- B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
- B65D41/0414—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck
- B65D41/0421—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck and combined with integral sealing means contacting other surfaces of a container neck
Definitions
- the object of the present invention is a metal screw cap for a beverage bottle consisting of a dome and a cylinder having internal thread adapted to co-operate with a threaded neck of the bottle and a liner affixed to the inner surface of the screw cap.
- Screw caps of the presented type are used for closing bottles for beverages, in particular for carbonated beverages. After filling and closing bottles, carbonated beverages may also be subjected to pasteurization process. Because of high temperatures and a carbon dioxide contained in beverages, it may lead to very high inner pressure inside the bottle, e.g. 5-6 bar, what can undesirably cause escape of carbon dioxide in the area of the screw cap, since the sealing in the area of the bottle closure may become unsatisfactory because of high inner pressure. However reducing of the amount of the carbon dioxide results in undesirable decrease in the beverage quality. Therefore it is necessary to seal the screw cap in such a way that the “escape” of carbon dioxide does not happen.
- a permeable closure may also cause penetration of air from outside inside the bottle, what may lead to fermentation of the beverage, and in case of beverages comprising oxidisable substances, to alteration of the chemical composition of the beverage (what is particularly undesirable in case of the beverages comprising vitamins or medicinal substances).
- Patent specification PL374268A discloses a screw cap for containers equipped with a threaded neck, in particular polyethylene bottles, in which beverages containing carbon dioxide are stored.
- the cap comprises a top plate, a cap jacket provided with an interior thread, an inner sealing ring having cylindrical shape, whose part extends outside in circumferential way and an outer sealing ring also having cylindrical shape, which is placed concentrically in relation to the inner ring.
- Patent specification US2016288945 discloses a bottle with a screw cap made from light metal intended in particular for storing carbonated beverages. Improvement in relation to the tightness of the closure of the bottle was achieved by modification of the upper edge of the neck of the bottle and appropriate adjustment of the screw cap to such modified neck.
- Patent specification US2016318674 discloses a screw cap intended for closing bottles for storing oxygen-sensitive medicines, which comprises a dome and a threaded skirt. Outstanding seating was achieved by adding annular pliable gasket secured to the circumferential portion of the inner section of the dome and a layer of lacquer applied on the inner surface of the dome inside the gasket. In this construction, threaded connection of the twisted closing skirt with the pharmaceutical bottle under pressure causes, that the pliable gasket seals the upper edge of the pharmaceutical bottle, to provide a gas-tight seal.
- a metal screw cap for a beverage bottle consisting of a dome and a cylinder having internal thread adapted to co-operate with a threaded neck of the bottle and a liner affixed to the inner surface of the screw cap in accordance with the invention is characterised by this that the dome is concave and is connected with the cylinder through a top ring, where between the dome and the top ring there is a circumferential groove having the radius of the inner curvature R 1 .
- the cylinder is connected with a security band by frangible bridges.
- the depth of the screw cap is from 1 to 10 mm, preferably from 1.2 to 8 mm.
- the radius R 1 is from 0.5 to 4 mm, when the screw cap is not twisted.
- the radius R 1 is from 1 to 3 mm.
- the diameter of the cylinder is from 10 to 100 mm.
- the radius of the curvature of the dome of the screw cap is from 35 to 105 mm.
- the radius R 2 is from 45 to 50 mm.
- the screw cap according to the invention allows to increase force of the sealing of the system by use of the inner pressure.
- Special shape of the screw cap causes that the pressure inside the bottle deforms the screw cap in a controlled way and pushes its wall to the wall of the bottle in the place, where the groove is in the dome.
- the screw cap according to the invention is a self-sealing screw cap.
- FIG. 1 illustrates the screw cap
- FIG. 2 its cross-section
- FIG. 3 a cross-section of the neck of the bottle with the screw cap
- FIGS. 4 and 5 illustraterate the mode of action of the screw cap
- FIG. 4 before closing
- FIG. 5 after closing.
- the dome 1 is concave and is connected with the cylinder 3 having the height H through the top ring 2 . Between the dome 1 and the top ring 2 is placed the circumferential groove having the radius of the inner curvature R 1 .
- the cylinder 3 is equipped with a tread 4 .
- the cylinder 3 is connected with a security band 5 by the frangible bridges 6 .
- the depth of the screw cap D is from 1 to 10 mm, preferably from 1.2 to 8 mm.
- the radius R 1 is from 0.5 to 4 mm, when the screw cap is not twisted.
- the radius R 1 is from 1 to 3 mm.
- the diameter of the cylinder S is from 10 to 100 mm.
- the radius R 2 of the curvature of the dome 1 of the screw cap is from 35 to 105 mm.
- the radius R 2 is from 45 to 50 mm.
- the screw cap 8 is applied on the threaded neck 9 of the bottle 10 . Twisting of the screw cap causes sealing of the outlet of the bottle, because the radius R 1 is reduced, owing to that the wall of the screw cap is being pushed to the wall of the bottle.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Abstract
Description
- The object of the present invention is a metal screw cap for a beverage bottle consisting of a dome and a cylinder having internal thread adapted to co-operate with a threaded neck of the bottle and a liner affixed to the inner surface of the screw cap.
- Screw caps of the presented type are used for closing bottles for beverages, in particular for carbonated beverages. After filling and closing bottles, carbonated beverages may also be subjected to pasteurization process. Because of high temperatures and a carbon dioxide contained in beverages, it may lead to very high inner pressure inside the bottle, e.g. 5-6 bar, what can undesirably cause escape of carbon dioxide in the area of the screw cap, since the sealing in the area of the bottle closure may become unsatisfactory because of high inner pressure. However reducing of the amount of the carbon dioxide results in undesirable decrease in the beverage quality. Therefore it is necessary to seal the screw cap in such a way that the “escape” of carbon dioxide does not happen. A permeable closure may also cause penetration of air from outside inside the bottle, what may lead to fermentation of the beverage, and in case of beverages comprising oxidisable substances, to alteration of the chemical composition of the beverage (what is particularly undesirable in case of the beverages comprising vitamins or medicinal substances).
- Patent specification PL374268A discloses a screw cap for containers equipped with a threaded neck, in particular polyethylene bottles, in which beverages containing carbon dioxide are stored. The cap comprises a top plate, a cap jacket provided with an interior thread, an inner sealing ring having cylindrical shape, whose part extends outside in circumferential way and an outer sealing ring also having cylindrical shape, which is placed concentrically in relation to the inner ring.
- Patent specification US2016288945 discloses a bottle with a screw cap made from light metal intended in particular for storing carbonated beverages. Improvement in relation to the tightness of the closure of the bottle was achieved by modification of the upper edge of the neck of the bottle and appropriate adjustment of the screw cap to such modified neck.
- Patent specification US2016318674 discloses a screw cap intended for closing bottles for storing oxygen-sensitive medicines, which comprises a dome and a threaded skirt. Outstanding seating was achieved by adding annular pliable gasket secured to the circumferential portion of the inner section of the dome and a layer of lacquer applied on the inner surface of the dome inside the gasket. In this construction, threaded connection of the twisted closing skirt with the pharmaceutical bottle under pressure causes, that the pliable gasket seals the upper edge of the pharmaceutical bottle, to provide a gas-tight seal.
- A metal screw cap for a beverage bottle consisting of a dome and a cylinder having internal thread adapted to co-operate with a threaded neck of the bottle and a liner affixed to the inner surface of the screw cap in accordance with the invention is characterised by this that the dome is concave and is connected with the cylinder through a top ring, where between the dome and the top ring there is a circumferential groove having the radius of the inner curvature R1.
- The cylinder is connected with a security band by frangible bridges.
- The depth of the screw cap is from 1 to 10 mm, preferably from 1.2 to 8 mm.
- The radius R1 is from 0.5 to 4 mm, when the screw cap is not twisted.
- The radius R1 is from 1 to 3 mm.
- The diameter of the cylinder is from 10 to 100 mm.
- The radius of the curvature of the dome of the screw cap is from 35 to 105 mm.
- The radius R2 is from 45 to 50 mm.
- The screw cap according to the invention allows to increase force of the sealing of the system by use of the inner pressure. Special shape of the screw cap causes that the pressure inside the bottle deforms the screw cap in a controlled way and pushes its wall to the wall of the bottle in the place, where the groove is in the dome. Thereby the screw cap according to the invention, is a self-sealing screw cap.
- The subject of the invention is disclosed at the drawings, where
FIG. 1 illustrates the screw cap,FIG. 2 —its cross-section,FIG. 3 —a cross-section of the neck of the bottle with the screw cap,FIGS. 4 and 5 —illustrate the mode of action of the screw cap,FIG. 4 —before closing,FIG. 5 —after closing. - The dome 1 is concave and is connected with the
cylinder 3 having the height H through thetop ring 2. Between the dome 1 and thetop ring 2 is placed the circumferential groove having the radius of the inner curvature R1. Thecylinder 3 is equipped with atread 4. Thecylinder 3 is connected with asecurity band 5 by thefrangible bridges 6. The depth of the screw cap D is from 1 to 10 mm, preferably from 1.2 to 8 mm. The radius R1 is from 0.5 to 4 mm, when the screw cap is not twisted. Preferably the radius R1 is from 1 to 3 mm. The diameter of the cylinder S is from 10 to 100 mm. The radius R2 of the curvature of the dome 1 of the screw cap is from 35 to 105 mm. Preferably the radius R2 is from 45 to 50 mm. - Inside of the screw cap is lined with a
liner 7. - The screw cap 8 is applied on the threaded neck 9 of the
bottle 10. Twisting of the screw cap causes sealing of the outlet of the bottle, because the radius R1 is reduced, owing to that the wall of the screw cap is being pushed to the wall of the bottle.
Claims (8)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IB2019/056164 WO2021009551A1 (en) | 2019-07-18 | 2019-07-18 | A metal screw cap for beverage bottle |
Publications (1)
Publication Number | Publication Date |
---|---|
US20220250804A1 true US20220250804A1 (en) | 2022-08-11 |
Family
ID=67997661
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/628,212 Pending US20220250804A1 (en) | 2019-07-18 | 2019-07-18 | A metal screw cap for beverage bottle |
Country Status (2)
Country | Link |
---|---|
US (1) | US20220250804A1 (en) |
WO (1) | WO2021009551A1 (en) |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3556335A (en) * | 1969-06-06 | 1971-01-19 | Brockway Glass Co Inc | Container closure |
US3997077A (en) * | 1974-11-13 | 1976-12-14 | G. D. Searle & Co. Ltd. | Containers with screw caps |
US5458252A (en) * | 1994-06-03 | 1995-10-17 | American Precision Plastics Corporation | Invertible, pressure-responsive sealing cap |
US20050147773A1 (en) * | 2004-01-06 | 2005-07-07 | Saliaris George P. | Thermally conductive cap |
WO2005092730A1 (en) * | 2004-03-25 | 2005-10-06 | Carbonite Corporation | Fitting caps to containers |
WO2009064032A1 (en) * | 2007-11-12 | 2009-05-22 | Hyunjin Cho | Dual sealing structure for container |
US20110204058A1 (en) * | 2010-02-22 | 2011-08-25 | Jack Edward Maze | Specimen Container |
US20160288945A1 (en) * | 2015-04-02 | 2016-10-06 | Red Bull Gmbh | Bottle having a screw cap |
US20170107020A1 (en) * | 2014-03-26 | 2017-04-20 | Ardagh Mp West France | Metal container comprising a neck capable of receiving a screw cap-type sealing element |
US20170197764A1 (en) * | 2014-07-25 | 2017-07-13 | Threadless Closures Limited | Container And Closure |
US20200406337A1 (en) * | 2019-06-26 | 2020-12-31 | Ball Corporation | A method and apparatus for sealing a metallic container with a metallic end closure |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3197055A (en) * | 1963-07-09 | 1965-07-27 | Aluminum Co Of America | Plastic container, metallic closure packaging |
US4813557A (en) * | 1984-03-05 | 1989-03-21 | Sewell Plastics Inc. | Pasteurizable container closure |
GB2542641A (en) * | 2015-07-24 | 2017-03-29 | Threadless Closures Ltd | Container and closure |
-
2019
- 2019-07-18 US US17/628,212 patent/US20220250804A1/en active Pending
- 2019-07-18 WO PCT/IB2019/056164 patent/WO2021009551A1/en active Application Filing
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3556335A (en) * | 1969-06-06 | 1971-01-19 | Brockway Glass Co Inc | Container closure |
US3997077A (en) * | 1974-11-13 | 1976-12-14 | G. D. Searle & Co. Ltd. | Containers with screw caps |
US5458252A (en) * | 1994-06-03 | 1995-10-17 | American Precision Plastics Corporation | Invertible, pressure-responsive sealing cap |
US20050147773A1 (en) * | 2004-01-06 | 2005-07-07 | Saliaris George P. | Thermally conductive cap |
WO2005092730A1 (en) * | 2004-03-25 | 2005-10-06 | Carbonite Corporation | Fitting caps to containers |
WO2009064032A1 (en) * | 2007-11-12 | 2009-05-22 | Hyunjin Cho | Dual sealing structure for container |
US20110204058A1 (en) * | 2010-02-22 | 2011-08-25 | Jack Edward Maze | Specimen Container |
US20170107020A1 (en) * | 2014-03-26 | 2017-04-20 | Ardagh Mp West France | Metal container comprising a neck capable of receiving a screw cap-type sealing element |
US20170197764A1 (en) * | 2014-07-25 | 2017-07-13 | Threadless Closures Limited | Container And Closure |
US20160288945A1 (en) * | 2015-04-02 | 2016-10-06 | Red Bull Gmbh | Bottle having a screw cap |
US20200406337A1 (en) * | 2019-06-26 | 2020-12-31 | Ball Corporation | A method and apparatus for sealing a metallic container with a metallic end closure |
Also Published As
Publication number | Publication date |
---|---|
WO2021009551A1 (en) | 2021-01-21 |
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