EP1785371B1 - Can container - Google Patents
Can container Download PDFInfo
- Publication number
- EP1785371B1 EP1785371B1 EP05770323A EP05770323A EP1785371B1 EP 1785371 B1 EP1785371 B1 EP 1785371B1 EP 05770323 A EP05770323 A EP 05770323A EP 05770323 A EP05770323 A EP 05770323A EP 1785371 B1 EP1785371 B1 EP 1785371B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- domed
- score line
- domed portion
- easily rupturable
- 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.)
- Not-in-force
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/14—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge constructed of aluminium; constructed of non-magnetic steel
-
- 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
- B65D51/00—Closures not otherwise provided for
- B65D51/16—Closures not otherwise provided for with means for venting air or gas
- B65D51/1633—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element
- B65D51/1638—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element by means of an element bursting upon a predetermined pressure in the container being exceeded
-
- 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
- B65D83/38—Details of the container body
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
- F17C13/123—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures for gas bottles, cylinders or reservoirs for tank vehicles or for railway tank wagons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/058—Size portable (<30 l)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0612—Wall structures
- F17C2203/0614—Single wall
- F17C2203/0617—Single wall with one layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/068—Special properties of materials for vessel walls
- F17C2203/069—Break point in the wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/02—Improving properties related to fluid or fluid transfer
- F17C2260/021—Avoiding over pressurising
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/04—Reducing risks and environmental impact
- F17C2260/042—Reducing risk of explosion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/07—Applications for household use
- F17C2270/0718—Aerosols
Abstract
Description
- This invention relates to a can container such as an aerosol can.
- Aerosol cans filled with a propellant as a high pressure gas are used in the prior art. If this kind of aerosol can is thrown into the fire or left in a hot place over a prolonged period of time, the inner pressure of the can container is raised extraordinarily due to thermal expansion of the propellant. In this case, a seamed portion where a can body and a bottom lid are seamed, or an installation portion of the can body where a mountain cap is mounted thereon may be demolished so that the bottom lid of the can container or the mountain cap is thereby blown off. In order to prevent such an explosion of the can container resulting from a pressure rise, a weakened portion is formed to release the inner pressure of the can container. The weakened portion is to be ruptured when the inner pressure of the can container exceeds a certain value so that the can container is deformed. Examples of this kind of can containers are disclosed in
CH540170 47-7686 U.S. Patent No. 3,786,967 ) and Japanese Patent Laid-Open No.48-49591 U.S. Patent No. 4,003,505 ). - Japanese Patent Laid-Open No.
47-7686 - Japanese Patent Laid-Open No.
48-49591 - However, in case of the invention disclosed in Japanese Patent Laid-Open No.
47-7686 - Meanwhile, according to the invention disclosed in Japanese Patent Laid-Open No.
48-49591 -
CH-A-540170 -
US-A-2795350 discloses a container having a concave centre portion with a ick or cut partially through the rim. - The present invention has been conceived noting the technical background as thus far described, and its object is to provide a can container comprising an easily rupturable portion, which is certainly ruptured to release a gas in the can in case an inner pressure of the can is raised extraordinary, and which is not ruptured in any other case.
- According to the present invention, there is provided a can container according to claim 1.
- The easily rupturable portion may be a score line whose longitudinal section is an inverted trapezoidal shape formed by a pair of inclined lateral faces which are tapered from the face side toward the inner face side of the domed portion, and a bottom face connecting end portions of the lateral faces at the inner face side of the domed portion.
- Therefore, when the inner pressure of the can container is raised extraordinary by heat or the like, the domed portion is inflated and deformed to protrude outwardly of the can container, within the outer circumferential portion of the domed portion formed on the bottom side of the can container (i.e., a lower edge of the domed portion continuing into the annular ground contacting portion which is to be contacted directly with the ground when the can container stands upright). As a result, the easily rupturable portion is ruptured to release the contents of the can container. For this reason, a gas venting can be achieved without blowing apart a piece of the can container when the inner pressure is raised extraordinary. In addition, since the easily rupturable portions are formed in the close vicinity of the outer circumferential portion of the domed portion where the degree of deformation resulting from inflation is great, the easily rupturable portions can be ruptured certainly when the domed portion is inflated. The easily rupturable portions can be prevented from being ruptured unexpectedly by dropping impact, by forming them on the outer face side of the domed portion in the close vicinity of the outer circumferential portion of the domed portion, in comparison with the case in which the easily rupturable portions are formed on the annular ground contacting portion which is likely to collide directly with the ground if the can container is dropped accidentally.
- Also since the easily rupturable portions are situated radially inwardly of the outer circumferential portion of the domed portion within a predetermined range, the easily rupturable portions can be ruptured more certainly.
- The cross-sectional shape of the easily rupturable portions is an inverted trapezoidal shape formed by a pair of inclined lateral faces and a bottom face connecting the inclined lateral faces. This means that the a clearance is created between the inclined lateral faces in the amount of the bottom face when the inner pressure is raised to a certain level by heat or shock and the domed portion is thereby inflated little bit outwardly. For this reason, the easily rupturable portion will not be ruptured undesirably.
- Further, since the planar shape of the easily rupturable portion is an approximate semicircular shape and end portions thereof are extended approximately in the radial direction of the can container, the semicircular portion enclosed by the ruptured easily rupturable portion is easy to pop up outwardly when the domed portion is deformed to protrude outwardly and the easily rapturable portion is thereby ruptured, in comparison with the case in which the easily rapturable portion is formed linearly. For this reason, the pressure in the can container can be relieved promptly. Additionally since the end portions of the easily rupturable portion are not directed to the adjoining easily rupturable portion in the circumferential direction, the rupture of the easily rupturable portion will not attack the adjoining easily rupturable portion even if the propagation of the rupture extends beyond the end portion of the easily rupturable portion. For this reason, the domed portion will not be partially fractured.
- In addition to the above, it is preferable to situate at least a portion of the easily rupturable portion within the range of 3 mm from the outer circumferential portion of the domed portion. Also, the width of a bottom face of the score line is preferably 0.03 mm to 0.1 mm.
-
-
Fig. 1 is a bottom view showing a can container of the invention. -
Fig. 2 is a view showing a situation of the easily rupturable portion of the can container illustrated inFig. 1 . -
Fig. 3 is a longitudinal sectional view showing the domed portion.. -
Fig. 4 is an enlarged view showing the domed portion illustrated inFig. 3 . -
Fig. 5 is an enlarged view of V portion inFig. 4 . -
Fig. 6 is a longitudinal sectional view showing the can container of the invention. -
Fig. 7 is a front view showing the can container of the invention. -
Fig. 8 is a bottom view showing another example of the can container of the invention. - Hereinafter, embodiments of the present invention will be explained with reference to the accompanying drawings.
Figs. 6 and7 respectively show a metal can container such as an aerosol can which is filled with a propellant such as a high pressure gas. The can container (i.e., a main body) 1 comprises a cylindrical metal can body (i.e., a trunk portion) 2. An aerosol valve member (not shown) is attached to one of the end portions of thecan body 2, and a disc shaped metal bottom lid (or can lid) 3 is fixed to another end portion of thecan body 2 by a seaming method. Contents to be filled in the can container 1 can be exemplified by cosmetics, an insecticide, a medical agent, a detergent, coating compositions, a lubricant, foods and so on, and a high pressure gas is also filled therein as a propellant. - A main material of the can body and the can lid of the can container is a metal material, in which a proper surface treatment or plating is applied according to need after the process of rolling. At least a metal material, in which a resin coating is applied to a surface to be contacted with the contents, can be used. As a metal sheet material, or steel sheet materials, e.g., a pure aluminum or aluminum alloy sheet, an electrolytic chromate treated steel sheet, a nickel-plated steel sheet, a tin plated steel sheet or the like can be used. Meanwhile, as to the resin coating, a coating composition as exemplified by an epoxy-phenol resin, an epoxy-acrylate resin, a polyvinyl chloride series resin or the like, and a resin film composed of one or more thermoplastic resin(s) as exemplified by a polyethylene, polypropylene, polyester, polyamide, ionomer or the like, can be suitably used in view of corrosion resistance and workability.
- The
can body 2 is formed by forming a seamless can by drawing and ironing a thin metal sheet, and a bottomedcylindrical portion 2A which is diametrically smaller than thecan body 2 is formed by drawing the bottom side of the seamless can. Then, an opening end of thecan body 2 and the leading end of the bottomedcylindrical portion 2A are trimmed, and an opening curledportion 2B to which an aerosol valve member is mounted is formed on the bottomedcylindrical portion 2A side. Further, aflange portion 2C which is to be seamed with thebottom lid 3 is formed on the opening end of thecan body 2. On the other hand, thebottom lid 3 is formed by forming a score line L as an easilyrupturable portion 5 on the metal sheet material and punched out into a disc shape, and then press forming is applied thereto. Thebottom lid 3 comprises adomed portion 3A, which protrudes inwardly of the can container 1 when seamed with thecan body 2 and whose longitudinal section is arcuate, and aflange portion 3B to be fixed with thecan body 2 by a seaming method. - As illustrated in
Fig. 1 , score lines L, whose planar shape is a semicircle, are formed on the outer face side of the can container 1 in the vicinity of an outercircumferential portion 3C continuing into theflange portion 3B. More specifically four score lines L are formed equiangularly on the radially outermost portion of thedomed portion 3A. Each of the score lines L functions as a easilyrupturable portion 5 which is to be ruptured when thedomed portion 3A is deformed. InFigs. 1 and 2 , the score lines L are situated at the radially outermost portion of thebottom lid 3 in the close vicinity of the outercircumferential portion 3C of thedomed portion 3A within a range of 3 mm from the outercircumferential portion 3C, and both end portions of the score line L are directed radially inward of thebottom lid 3. Here, a two-dot chain line M inFig. 2 represents a state where the score line L contacts with the outercircumferential portion 3C of thedomed portion 3A. - The shape of a longitudinal section of the score line L shown in
Figs. 4 to 5 is an inverted trapezoidal shape formed by a pair of inclined lateral faces 5A which are tapered from the outer face side of the bottom lid 3 (or the can container 1) toward the inner face side thereof, and abottom face 5B connecting lower end portions of the lateral faces 5A substantially in parallel with thebottom lid 3. The thickness of thedomed portion 3A of thebottom lid 3 is 0.3 mm, a residual thickness underneath the score line L is 0.15 mm, a width of thebottom face 5B is 0.06 mm, and an opening degree of the pair of inclined lateral faces 5A is 50-degree. Additionally a pressure capacity of thebottom lid 3 is degraded if the score lines L are formed too many. For this reason, it is preferable to form 2 to 10 score lines L in the circumferential direction of thebottom lid 3 at approximately even interval, within the above-mentioned values. - The can container of the present invention shown in
Fig. 6 is formed by attaching thebottom lid 3 to thecan body 2 by a seaming method, and aseamed portion 3D, where the can body 2 (or theflange portion 2C) and the bottom lid 3 (or theflange portion 3B) are seamed together, corresponds to the annular ground contacting portion of the present invention. Theseamed portion 3D comprises an annular ground contacting face which is to be contacted with a floor or a table directly and inner and outer circumferential faces 3E and 3F extending near-vertically from a circumferential portion of the ground contacting face. An upper end of an inner circumferential wall of theseamed portion 3D and the outercircumferential portion 3C (i.e., a lower end of thedomed portion 3A) are connected with each other. - As an another embodiment of the present invention shown in
Fig. 8 ,auxiliary score lines 6 may also be formed radially inward of each score line L situated in the close vicinity of the outercircumferential portion 3C of thedomed portion 3A. A residual thickness under theauxiliary score line 6 is thicker than that under the score line L. In this case, a stress concentration at the score line L as forming the score lines can be relaxed by forming theauxiliary score line 6 in addition to the score line L. For this reason, the score line L is prevented from being thinned partially too much, and from suffering a crack. If the score line is damaged when it is formed, such damage may get more serious as a result of forming thedomed portion 3A, especially in case of forming thedomed portion 3A after forming the score line. Consequently, the resin film covering the inner face of the score line may tear and the score line itself may crack. However, it is possible to avoid such disadvantages by forming theauxiliary score line 6. - According to the can container of the present invention, when the inner pressure of the can container 1 is raised extraordinary by heat or the like, the
domed portion 3A is inflated and deformed to protrude outwardly of the can container 1, within the outercircumferential portion 3C around thedomed portion 3A of thebottom lid 3. At the moment, any of the score lines L formed in the close vicinity of the outercircumferential portion 3C of thedomed portion 3A is ruptured to release the (not shown) contents inside of the can container 1. For this reason, theseamed portion 3D where thecan body 2 and thebottom lid 3 are seamed will not be demolished so that thebottom lid 3 will not be blown off. - When the
domed portion 3A is deformed to protrude outwardly, the center portion of thedomed portion 3A is displaced outwardly (i.e., downwardly) in the axial direction of the can container 1 but the wall surface of thedomed portion 3A itself is not deformed significantly. However, the wall surface in the close vicinity of the outercircumferential portion 3C of thedomed portion 3A is deformed significantly, more specifically, it is elongated inwardly in the radial direction of thedomed portion 3A and outwardly in the axial direction of the can container 1. According to the prior art inventions, the score line L is not ruptured when thedomed portion 3A is deformed to protrude outwardly even if the score lines L are formed in the vicinity of the center portion of thedomed portion 3A. On the other hand, according to the present invention, score lines L are formed in the close vicinity of the outercircumferential portion 3C of thedomed portion 3A. For this reason, it is possible to rupture any of the score lines L certainly when thedomed portion 3A is deformed to protrude outwardly. It is to be especially noted that it is preferable to situate at least a portion of the score lines L within the range of 3 mm from the outercircumferential portion 3C of thedomed portion 3A inwardly in the radial direction. - Therefore, it is possible to rupture the score line L certainly by forming the score lines L within the above-mentioned range. Moreover, the score lines L are formed in the close vicinity of the outer
circumferential portion 3C of thedomed portion 3A, therefore, the score line L can be prevented from being ruptured unexpectedly by a drop impact even when the can is dropped accidentally in comparison with the case in which the score lines are formed on theseamed portion 3D as the annular ground contacting portion which is to be contacted directly with the ground. Further, according to this embodiment, the longitudinal sectional shape of the score line L is an inverted trapezoidal shape, and thebottom face 5B is formed to connect the inclined lateral faces 5A. Therefore, the score line L will not be ruptured undesirably even if the inner pressure of the can container 1 is raised to a certain level by heat or impact to inflate thedomed portion 3A slightly outward. - Additionally, the
bottom face 5B cracks when thebottom lid 3 is deformed to protrude outwardly by a rise in the inner pressure of the can container 1 so that the inclined lateral faces 5A are brought into contact with each other. That is, provided that the lower end portions of the inclined lateral faces 5A of the score line L are contacted directly with each other without interposing thebottom face 5B therebetween for example, the inclined lateral faces 5A may be brought into contact with each other to rupture the score line L even if the inner pressure of the can container is not high enough to deform thebottom lid 3 to protrude outwardly but thedomed portion 3A is slightly inflated outwardly. - On the other hand, according to the can container of the present invention, the longitudinal section of the score line L is an inverted trapezoidal shape comprising the
bottom face 5B. Therefore, even if thedomed portion 3A is deformed little bit outwardly, thebottom face 5B creates a clearance between the inclined lateral faces 5A. For this reason, the inclined lateral faces 5A are not brought into contact with each other immediately so that the score line L will not be ruptured undesirably even if the inner pressure of the can container 1 is raised little bit. As mentioned above, the score line L is ruptured by a slight deformation of thebottom lid 3 if the width of thebottom face 5B is too narrow, and to the contrary, it is difficult for the score line L to be ruptured if the width of thebottom face 5B is too wide. For this reason, the width of thebottom face 5B is preferably within the range from 0.03 mm to 0.1 mm. - As also mentioned above, according to the present invention, a planar shape of each score line L is semicircle, and end portions thereof are extended approximately in the radial direction of the can container 1. Therefore, the semicircular portion enclosed by the ruptured score line L is easy to pop up outwardly when the
domed portion 3A is deformed to protrude outwardly so that the score line L is ruptured, in comparison with the case in which the score line is formed linearly on the bottom lid. For this reason, it is possible to release the inner pressure of the can container 1 promptly. Additionally since the end portions of the score line L are directed approximately in the radial direction of the can container 1, thebottom lid 3 will not be fractured partially even if a rupture of the score line L resulting from a rise in the inner pressure of the can container 1 extends beyond the end portion of the score line L so that thebottom lid 3 cracks. To the contrary, provided that the end portions of the score line L are directed in the circumferential direction, a propagation of a rupture of the score line L would connect to the end portion of adjoining score line L, in case the score line L is ruptured and such rupture extends beyond the end portion thereof to crack thebottom lid 3. As a result, a disc shaped fragment of thebottom lid 3 may be separated therefrom. - On the other hand, according to the can container of the present invention, the end portions of the score line L are directed approximately in the radial direction of the can container 1. Therefore, circumferentially situated score lines L are not positioned on the extension of the end portions of the adjoining score line L. For this reason, the
bottom lid 3 will not be fractured partially even if a rupture of the score line L extends beyond the end portion thereof and cracks thebottom lid 3. In addition, according to the present invention, not only the can container in which thebottom lid 3 is seamed with thecan body 2, but also a can container in which a can body and a bottom lid are formed integrally may be used. Moreover, not only an aerosol can but also a bottle-shaped can in which a threaded portion is formed on one of the end portions of thecan body 2.
Claims (4)
- A can container (1), having an annular ground contacting portion (3D) formed on a lower end of the can container (1), and a domed portion (3A) arcuate in longitudinal section and which protrudes inwardly of the can container (1), and which is connected to an upper end of an inner circumferential face of the annular ground contacting portion (3D) extending near vertically, wherein:an easily rupturable portion (5), which is ruptured when an inner pressure of the can container (1) is raised extraordinarily and the domed portion (3A) is thereby deformed to protrude outwardly of the can container (1), is formed on an outer face side of the domed portion (3A) and situated in the close vicinity of an outer circumferential portion (3C) of the domed portion (5) continuing into the annular ground contacting portion (3D);the planar shape of the easily rupturable portion (5) is an approximate semicircular shape, and end portions thereof are extended approximately in the radial direction of the can container (1); andat least a portion of the easily rupturable portion (5) is situated radially inward of the outer circumferential portion (3C) of the domed portion within the range of 3mm from the outer circumferential portion (3C) of the domed portion (3A).
- The can container as set forth in Claim 1, wherein:the easily rupturable portion is a score line whose longitudinal section is an inverted trapezoidal shape formed by a pair of inclined lateral faces (5a) which are tapered from the outer face side of the domed portion toward the inner face side, and a bottom face (5b) connecting the inclined lateral faces.
- The can container set forth in any preceding claim wherein four score lines are formed equiangularly on the radially outermost portion of the domed portion.
- The can container as claimed in any preceding claim, wherein auxiliary score lines are formed radially inwardly of each score line.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004233458A JP4781646B2 (en) | 2004-08-10 | 2004-08-10 | Can container |
PCT/JP2005/014860 WO2006016679A1 (en) | 2004-08-10 | 2005-08-08 | Can container |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1785371A1 EP1785371A1 (en) | 2007-05-16 |
EP1785371A4 EP1785371A4 (en) | 2007-09-26 |
EP1785371B1 true EP1785371B1 (en) | 2010-12-29 |
Family
ID=35839436
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05770323A Not-in-force EP1785371B1 (en) | 2004-08-10 | 2005-08-08 | Can container |
Country Status (8)
Country | Link |
---|---|
US (1) | US20090223956A1 (en) |
EP (1) | EP1785371B1 (en) |
JP (1) | JP4781646B2 (en) |
CN (1) | CN101014515A (en) |
AT (1) | ATE493349T1 (en) |
DE (1) | DE602005025651D1 (en) |
HK (1) | HK1103702A1 (en) |
WO (1) | WO2006016679A1 (en) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4880394B2 (en) * | 2006-07-26 | 2012-02-22 | 日本電気株式会社 | Liquid supply container and fuel cell system provided with the same |
JP4959274B2 (en) * | 2006-10-02 | 2012-06-20 | ユニバーサル製缶株式会社 | Bottle can and bottle can with cap |
US7971759B2 (en) | 2008-08-20 | 2011-07-05 | Ds Containers, Inc. | Aerosol container with pressure relief mechanism |
DE102010044338B4 (en) | 2009-09-08 | 2023-05-04 | SCHäFER WERKE GMBH | Container with a safety rupture point |
TWI537512B (en) * | 2010-06-07 | 2016-06-11 | 大陸製罐股份有限公司 | Portable high pressure gas container |
EP2508447A1 (en) * | 2011-04-08 | 2012-10-10 | Crown Packaging Technology, Inc. | Self-dispensing container |
US8875951B2 (en) * | 2011-09-22 | 2014-11-04 | Kent A. Houser | Aerosol cap and system for dispensing a fluid from a canister |
US8927474B2 (en) | 2012-03-16 | 2015-01-06 | S.C. Johnson & Son, Inc. | Compressed gas aerosol composition in steel can |
GB2520170B (en) * | 2012-06-25 | 2017-12-13 | Illinois Tool Works | Pressure Relief Device For Pressurized Container |
CN103697320B (en) * | 2013-12-18 | 2016-01-20 | 王青 | Pressure-relief explosion-proof tank |
USD742251S1 (en) | 2014-07-16 | 2015-11-03 | Ball Corporation | Two-piece contoured metallic container |
USD758207S1 (en) | 2014-08-08 | 2016-06-07 | Ball Corporation | Two-piece contoured metallic container |
CA2963481C (en) | 2014-10-15 | 2019-01-08 | Ball Corporation | Apparatus and method for simultaneously forming a contoured shoulder and neck portion in a closed end of a metallic container |
EP3212347A4 (en) | 2014-10-28 | 2018-07-18 | Ball Corporation | Apparatus and method for forming a cup with a reformed bottom |
DE102015203565A1 (en) * | 2015-02-27 | 2016-09-01 | Beiersdorf Ag | Cosmetic product comprising a metal can and its contents |
USD813673S1 (en) * | 2015-06-30 | 2018-03-27 | Kronebusch Industries, Llc | Spray container |
US10159862B2 (en) | 2015-06-30 | 2018-12-25 | Kronebusch Industries, Llc | Fire extinguisher with recessed gauge |
USD804309S1 (en) | 2016-02-17 | 2017-12-05 | Ball Corporation | Metal bottle |
US10843864B2 (en) | 2017-05-17 | 2020-11-24 | Ball Metalpack, Llc | Metallic container dome configured to deform at a predetermined pressure |
JP7025861B2 (en) * | 2017-08-22 | 2022-02-25 | 大和製罐株式会社 | Seal plate |
JP7238254B2 (en) * | 2017-10-30 | 2023-03-14 | 東洋製罐株式会社 | can container |
JP7163086B2 (en) | 2018-07-12 | 2022-10-31 | 大和製罐株式会社 | can lid |
CN109367947A (en) * | 2018-09-30 | 2019-02-22 | 莱克电气股份有限公司 | A kind of air bubble machine water bottle directional splitting protection structure |
CN111137573A (en) * | 2020-03-24 | 2020-05-12 | 浙江东成印业有限公司 | Explosion-proof type bottom |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2795350A (en) * | 1953-12-02 | 1957-06-11 | Dev Res Inc | Explosion-proof low-pressure containers |
US3195769A (en) * | 1961-08-31 | 1965-07-20 | Gerald A Miller | Burst diaphragm and method of making same |
US3292826A (en) * | 1965-01-18 | 1966-12-20 | Abplanalp Robert Henry | Aerosol can protected against explosion |
CA957626A (en) | 1970-09-25 | 1974-11-12 | James D. Giocomo | Pressure relief system for an aerosol container |
CH540170A (en) * | 1971-06-23 | 1973-08-15 | Alusuisse | Safety box intended to contain a pressurized fluid |
CH552520A (en) * | 1971-06-23 | 1974-08-15 | Alusuisse | SAFETY BOX INTENDED TO CONTAIN A FLUID UNDER PRESSURE. |
US3929251A (en) * | 1972-08-17 | 1975-12-30 | Aluminum Co Of America | Container wall with rupturable weakening line |
US3850339A (en) * | 1973-05-07 | 1974-11-26 | American Can Co | Triple score pressure relief system for an aerosol container |
US4588101A (en) * | 1984-10-10 | 1986-05-13 | Southern Can Company | Safety vent for containers |
JPH085506B2 (en) * | 1986-08-25 | 1996-01-24 | 日東製器株式会社 | Can container |
JPH089032Y2 (en) * | 1990-07-04 | 1996-03-13 | 誠一 北林 | Aerosol spray container |
JPH089032B2 (en) * | 1991-03-05 | 1996-01-31 | 赤井電機株式会社 | Continuous electrolytic ionized water generator |
-
2004
- 2004-08-10 JP JP2004233458A patent/JP4781646B2/en active Active
-
2005
- 2005-08-08 CN CNA2005800274049A patent/CN101014515A/en active Pending
- 2005-08-08 AT AT05770323T patent/ATE493349T1/en not_active IP Right Cessation
- 2005-08-08 DE DE602005025651T patent/DE602005025651D1/en active Active
- 2005-08-08 US US11/573,489 patent/US20090223956A1/en not_active Abandoned
- 2005-08-08 WO PCT/JP2005/014860 patent/WO2006016679A1/en active Application Filing
- 2005-08-08 EP EP05770323A patent/EP1785371B1/en not_active Not-in-force
-
2007
- 2007-11-13 HK HK07112395.9A patent/HK1103702A1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP1785371A1 (en) | 2007-05-16 |
CN101014515A (en) | 2007-08-08 |
WO2006016679A1 (en) | 2006-02-16 |
ATE493349T1 (en) | 2011-01-15 |
DE602005025651D1 (en) | 2011-02-10 |
EP1785371A4 (en) | 2007-09-26 |
JP4781646B2 (en) | 2011-09-28 |
JP2006051964A (en) | 2006-02-23 |
US20090223956A1 (en) | 2009-09-10 |
HK1103702A1 (en) | 2007-12-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1785371B1 (en) | Can container | |
US10865036B2 (en) | Beverage can having a grommet | |
US3850339A (en) | Triple score pressure relief system for an aerosol container | |
US9475620B2 (en) | Closure | |
US3929251A (en) | Container wall with rupturable weakening line | |
EP3326926B1 (en) | Drawn and ironed aerosol can | |
US5249701A (en) | Aerosol container with pressure release structure | |
US3918610A (en) | Safety vent for a pressure container | |
US5713481A (en) | Full panel pull out can end with vent means | |
US3786967A (en) | Pressure relief system for an aerosol container | |
US5765714A (en) | Lid mounting structure for pressure vessel | |
US4795045A (en) | Closure for containers | |
US3918378A (en) | Container closure with vent opening means and method of forming the same | |
JP4716490B2 (en) | Sealed liner structure for threaded can caps | |
JP7163086B2 (en) | can lid | |
WO2019087523A1 (en) | Can container | |
JPH09328158A (en) | Metallic cap | |
EP0048890B1 (en) | Lightweight container | |
JP4404243B2 (en) | Can lid | |
JPH0880962A (en) | Explosure-preventing cap |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20070305 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 20070823 |
|
DAX | Request for extension of the european patent (deleted) | ||
REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1103702 Country of ref document: HK |
|
17Q | First examination report despatched |
Effective date: 20071220 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REF | Corresponds to: |
Ref document number: 602005025651 Country of ref document: DE Date of ref document: 20110210 Kind code of ref document: P |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602005025651 Country of ref document: DE Effective date: 20110210 |
|
REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1103702 Country of ref document: HK |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: T3 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101229 |
|
LTIE | Lt: invalidation of european patent or patent extension |
Effective date: 20101229 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101229 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101229 Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101229 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101229 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101229 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101229 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20110329 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20110429 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20110330 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101229 Ref country code: BE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101229 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101229 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20110429 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20110409 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101229 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101229 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101229 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101229 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20110930 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602005025651 Country of ref document: DE Effective date: 20110930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110831 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110831 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110831 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110808 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110808 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101229 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101229 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20150709 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20150805 Year of fee payment: 11 Ref country code: DE Payment date: 20150804 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20150629 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20150827 Year of fee payment: 11 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 602005025651 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MM Effective date: 20160901 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20160808 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20170428 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160901 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160831 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160808 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170301 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160808 |