EP3947194A1 - Boitier aerosol recyclable a systeme de depressurisation et outil de depressurisation d'un tel boitier - Google Patents
Boitier aerosol recyclable a systeme de depressurisation et outil de depressurisation d'un tel boitierInfo
- Publication number
- EP3947194A1 EP3947194A1 EP20713882.7A EP20713882A EP3947194A1 EP 3947194 A1 EP3947194 A1 EP 3947194A1 EP 20713882 A EP20713882 A EP 20713882A EP 3947194 A1 EP3947194 A1 EP 3947194A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- tool
- insert
- hole
- punch
- 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.)
- Withdrawn
Links
- 239000000443 aerosol Substances 0.000 title claims abstract description 21
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims description 14
- 238000004064 recycling Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 238000013459 approach Methods 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 abstract description 6
- 239000000806 elastomer Substances 0.000 abstract description 5
- 238000002788 crimping Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 239000003380 propellant Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 102000000591 Tight Junction Proteins Human genes 0.000 description 1
- 108010002321 Tight Junction Proteins Proteins 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000010814 metallic waste Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 239000010816 packaging waste Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000001578 tight junction Anatomy 0.000 description 1
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
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
- B65D83/70—Pressure relief devices
Definitions
- the present invention relates to a recyclable aerosol housing and provided for this purpose with a depressurization system and a depressurization tool of such a housing.
- the invention relates to the field of aerosol cans containing products to be sprayed such as paints or lubricants for example.
- the housing after complete use nevertheless contains a minimal residual amount of active product, generally less than 5 grams and a flammable residual gas phase with a residual pressure lower than the initial internal pressure (initial internal pressure of approximately 3 to 4 bars) which makes it unsuitable for being treated as simple metal waste.
- the casing is a waste consisting essentially of metal, if we take the precaution of removing the diffuser part itself made of recyclable PP in sorting operations. Disclosure of the invention
- the present invention provides a recyclable aerosol canister
- the present invention firstly provides a recyclable aerosol housing comprising a barrel usually called a body, a dome on which is crimped a valve holder equipped with a valve and a bottom, for which the bottom of the housing is drilled in its center with a hole receiving an insert or elastomeric plug crimped into the hole, the insert comprising an upper part and a lower part joined by a constriction for receiving the peripheral wall of the hole to form a sealed plug once inserted in the hole.
- the hole is of a diameter of such size that the housing retains good resistance to pressure and in a traditional application the diameter of the hole is less than 5mm.
- the upper part of the insert advantageously forms a substantially spherical or oval cap comprising a domed upper face and a flat lower face and the lower part of the insert is a frustoconical part widening out opposite its junction with the flat underside of the upper part at the level of the constriction.
- the diameter of the insert at the level of the constriction between the lower part and the upper part of the insert is slightly greater than the diameter of the hole so as to achieve a tight junction with the bottom of the case. .
- the diameter of the insert at the throat is between 5 and 20% greater than the diameter of the hole depending on the nature of the elastomer.
- a base of the upper part of the insert has a diameter greater than the diameter of the hole, this diameter being determined to allow on the one hand a forceful passage of the upper part through the hole and on the other apart from a retention of the upper part under the pressure of the gas in the case as well as a sealing of the insert / bottom connection.
- the invention further relates to a system which comprises a housing according to the invention and a depressurization tool comprising a support provided with a bottom comprising a domed upper face of conjugate curvature of the surface.
- a depressurization tool comprising a support provided with a bottom comprising a domed upper face of conjugate curvature of the surface.
- the tool can optionally be supplemented by a product residue recovery tank placed under the tool.
- the base of the central punch is advantageously surrounded by an O-ring to prevent product splashing around the punch when the insert is driven into the housing by the punch.
- the tool preferably comprises a peripheral wall around the bottom of the tool and forming a guide for inserting the bottom of the housing into the tool and pushing the insert back into the housing.
- the invention relates to a method for emptying an aerosol canister by means of the system according to the invention comprising the succession of steps:
- FIG. 1 shows a metal case of the prior art in side view and in section
- FIG. 2 shows a metal case of the prior art equipped with its valve and filled in a sectional side view
- FIG. 3A shows a metal housing of the invention in sectional side view before mounting a valve
- FIG. 3B represents a complete invention case
- FIG. 4A shows a depressurization tool according to one aspect of the invention in side perspective
- FIG. 4B shows the depressurization tool of Figure 4A in a sectional side view
- FIG. 5A]; [Fig. 5B]; [Fig. 5C] show steps of emptying a housing of the invention in a sectional side view.
- Figures 1 and 2 show an aerosol can of the prior art which comprises a barrel 10, a concave bottom 20, a dome 30 carrying a valve 40.
- the connection between the bottom and the barrel is achieved by means of a first annular crimp 12
- the connection between the barrel and the dome is made by means of a second annular crimping 14
- the connection between the dome and a cup 42 valve holder is made with a third annular crimp 32.
- the crimps are optionally provided with rubber gaskets which ensure the good connection between the parts and the perfect sealing of the housing.
- the aerosol valve 40 is crimped on the dome of the housing once the housing is filled with the active product.
- the function of the valve which generally includes a dip tube, is to release the product through its opening and to seal the aerosol when it is not actuated.
- Such an aerosol canister is designed to withstand internal pressures of 12 to 18 bars.
- the housing contains a liquid or pasty product 60 to be sprayed through the valve, pushed by a pressurized gas 50 and rising towards the valve via a dip tube 46.
- the active product is placed in the housing before crimping the valve and the liquefied gas is introduced through the valve after crimping the valve.
- the full housing comprises a liquid mixture of product to be sprayed (for example a paint or a lubricant) and liquefied propellant gas (comparable to a cosolvent of the product).
- a liquid mixture of product to be sprayed for example a paint or a lubricant
- propellant gas liquefied propellant gas
- the invention consists in equipping the bottom of the housing with a depressurization device allowing at the end of the housing's life to actuate this device so that the residual part of active product and gas s' removed from the casing which then becomes conventional metal packaging waste compatible with a normal metal packaging recycling channel.
- the bottom 20 of the housing is pierced in its center with a hole 22, visible in Figure 5C, of diameter less than about 5 mm so that the housing retains good resistance to pressure.
- a specific elastomeric insert or stopper 70 is crimped in this hole on the casing production line either at the end of manufacture of the metal part of the casing, before filling with the product as shown in FIG. 3A, or for example during manufacture.
- the bottom of the case 20 which will be crimped onto the body of the case with the insert in place by means of the crimping wings 21 which fold over an annular stamping of the case.
- the insert 70 comprises an upper part 71 forming a substantially spherical or oval cap having a domed upper face and a flat lower face as well as a tapered lower part 72 widening out opposite its junction with the face lower plane of the upper part to form a waterproof plug once inserted into the hole 22.
- the diameter of the frustoconical lower part at the junction with the cap will be slightly greater than the diameter of the hole 22 so as to achieve a sealed junction with the bottom 20 of the case.
- the base of the cap 71 of the insert 70 will have a diameter greater than the hole 22, this diameter being determined to allow on the one hand a passage in force of the cap through the hole and on the other hand a retention of the cap under gas pressure in the case as well as sealing of the insert / bottom connection.
- the case equipped with this specific bottom and provided with the insert must withstand the usual constraints of resistance to internal pressure of 18 to 20 bar and be waterproof in a temperature range of -20 ° C to + 60 ° C at the above pressure.
- the insert 70 with its adapted shape is made with an elastomer compatible with the formula of the active product and of the propellant gas liquefied at the aforementioned pressures and temperatures.
- An insert in particular an elastomer of the nitrile or Teflon type, which are elastomers that are not very reactive and have good resistance over time and with respect to chemical attack, will be preferred.
- Figure 3B shows the housing equipped with its insert 70 in use, the product 60 being propelled outside the housing by the gas 50 when pressing A on a diffuser 44 mounted on the valve 40 .
- Figures 4A and 4B show a tool suitable for removing the insert at the end of use from the housing, when the latter is empty.
- the tool as described consists of a support 100 in the form of a cup, comprising a bottom provided with an upper face 1 10 forming a dome conjugated to the outer surface of the bottom of the housing 20.
- the bottom is according to the invention provided with a central punch 130 protruding from the middle of the bottom.
- the punch has a point 132 provided with a tubular central channel 131 opening into a vent 133 under the tool to allow the evacuation and expansion of the gas under the tool.
- the tool can optionally be supplemented by a tank for recovering product remains placed under the tool.
- the tool comprises an O-ring 140 to prevent product splashing around the punch when the insert is driven into the housing by the punch.
- the tool finally comprises a peripheral wall 120 forming a guide for inserting the bottom of the housing into the tool and pushing the insert back into the housing.
- Figures 5A to 5C illustrate the steps of removing the insert and emptying the housing.
- the pierced case, emptied of its residual content shown in Figure 5C can then be considered as a conventional metal packaging and follow a standard metal packaging recycling process and no longer be considered a DDS, the non-metallic part of the valve 40, the tube 46 and the insert 70 in the housing remaining negligible in terms of pollution of the metal of the housing in a conventional metal recycling industry.
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1903083A FR3094356B1 (fr) | 2019-03-25 | 2019-03-25 | Boîtier aérosol recyclable à système de dépressurisation et outil de dépressurisation d’un tel boîtier |
PCT/EP2020/058071 WO2020193503A1 (fr) | 2019-03-25 | 2020-03-24 | Boitier aerosol recyclable a systeme de depressurisation et outil de depressurisation d'un tel boitier |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3947194A1 true EP3947194A1 (fr) | 2022-02-09 |
Family
ID=67441396
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20713882.7A Withdrawn EP3947194A1 (fr) | 2019-03-25 | 2020-03-24 | Boitier aerosol recyclable a systeme de depressurisation et outil de depressurisation d'un tel boitier |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220194688A1 (fr) |
EP (1) | EP3947194A1 (fr) |
CA (1) | CA3133048A1 (fr) |
FR (1) | FR3094356B1 (fr) |
WO (1) | WO2020193503A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11591151B2 (en) * | 2021-07-02 | 2023-02-28 | Owens-Brockway Glass Container Inc. | Pressure relief blow-out plugs and related packages |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0532224Y2 (fr) * | 1989-02-01 | 1993-08-18 | ||
US5232124A (en) * | 1992-03-10 | 1993-08-03 | Advanced Monobloc Corporation | Pressure relief device and method |
JPH0999985A (ja) * | 1995-10-03 | 1997-04-15 | Toyo Aerosol Kogyo Kk | エアゾール容器のガス抜装置 |
JPH1017042A (ja) * | 1996-07-04 | 1998-01-20 | Asia Kinzoku Kogyo Kk | 容器及び容器の製造方法 |
JP3467192B2 (ja) * | 1998-11-06 | 2003-11-17 | 株式会社 岩崎 | 孔開け装置 |
US6883564B2 (en) * | 2003-07-22 | 2005-04-26 | Thomas M. Risch | Pressurizing system for a dispensing container |
-
2019
- 2019-03-25 FR FR1903083A patent/FR3094356B1/fr active Active
-
2020
- 2020-03-24 WO PCT/EP2020/058071 patent/WO2020193503A1/fr unknown
- 2020-03-24 EP EP20713882.7A patent/EP3947194A1/fr not_active Withdrawn
- 2020-03-24 US US17/593,609 patent/US20220194688A1/en not_active Abandoned
- 2020-03-24 CA CA3133048A patent/CA3133048A1/fr active Pending
Also Published As
Publication number | Publication date |
---|---|
FR3094356A1 (fr) | 2020-10-02 |
WO2020193503A1 (fr) | 2020-10-01 |
FR3094356B1 (fr) | 2022-12-02 |
CA3133048A1 (fr) | 2020-10-01 |
US20220194688A1 (en) | 2022-06-23 |
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