US20020125205A1 - Sealing surface for plastic closure with radial seal - Google Patents

Sealing surface for plastic closure with radial seal Download PDF

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Publication number
US20020125205A1
US20020125205A1 US09/800,793 US80079301A US2002125205A1 US 20020125205 A1 US20020125205 A1 US 20020125205A1 US 80079301 A US80079301 A US 80079301A US 2002125205 A1 US2002125205 A1 US 2002125205A1
Authority
US
United States
Prior art keywords
closure
gasket
container
sealing
side wall
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.)
Abandoned
Application number
US09/800,793
Other languages
English (en)
Inventor
John Hathaway
Dale Taylor
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rieke LLC
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US09/800,793 priority Critical patent/US20020125205A1/en
Priority to MXPA03008074A priority patent/MXPA03008074A/es
Priority to CA002440093A priority patent/CA2440093A1/fr
Priority to PCT/US2002/007189 priority patent/WO2002070360A1/fr
Priority to EP02723370A priority patent/EP1368243A1/fr
Priority to BR0208055-9A priority patent/BR0208055A/pt
Assigned to RIEKE CORPORATION reassignment RIEKE CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HATHAWAY, JOHN, TAYLOR, DALE
Assigned to JPMORGAN CHASE BANK, AS COLLATERAL AGENT reassignment JPMORGAN CHASE BANK, AS COLLATERAL AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ARROW ENGINE COMPANY, COMPAC CORPORATION, DRAW-TITE, INC., FULTON PERFORMANCE PRODUCTS, INC., LAKE ERIE SCREW CORPORATION, LAMONS METAL GASKET CO., MONOGRAM AEROSPACE FASTENERS, INC., NORRIS CYLINDER COMPANY, PLASTIC FORM, INC., REESE PRODUCTS, INC., REIKE CORPORATION, RESKA SPLINE PRODUCTS, INC., TRIMAS CORPORATION, WEBAR CORPORATION
Publication of US20020125205A1 publication Critical patent/US20020125205A1/en
Assigned to TRIMAS INTERNATIONAL HOLDINGS LLC, NI INDUSTRIES, INC., ARROW ENGINE COMPANY, LAKE ERIE PRODUCTS CORPORATION, CEQUENT PERFORMANCE PRODUCTS, INC., RIEKE CORPORATION, RIEKE OF INDIANA, INC., ENTEGRA FASTENER CORPORATION, NETCONG INVESTMENTS, INC., RICHARDS MICRO-TOOL, INC., DI-RITE COMPANY, REESE PRODUCTS, INC., BEAUMONT BOLT & GASKET, INC., HAMMERBLOW ACQUISITION CORP., INDUSTRIAL BOLT & GASKET, INC., NORRIS CYLINDER COMPANY, NORRIS ENVIRONMENTAL SERVICES, INC., LAMONS METAL GASKET CO., CUYAM CORPORATION, DRAW-TITE, INC., CONSUMER PRODUCTS, INC., TRIMAS COMPANY LLC, TOWING HOLDING LLC, NI WEST, INC., LOUISIANA HOSE & RUBBER CO., COMPAC CORPORATION, PLASTIC FORM, INC., NORRIS INDUSTRIES, INC., FULTON PERFORMANCE PRODUCTS, INC., CEQUENT CONSUMER PRODUCTS, INC., CEQUENT TOWING PRODUCTS, INC., THE HAMMERBLOW COMPANY, LLC, DEW TECHNOLOGIES, INC., RIEKE OF MEXICO, INC., KEO CUTTERS, INC., HI-VOL PRODUCTS LLC, TRIMAS CORPORATION, LAMONS GASKET COMPANY, MONOGRAM AEROSPACE FASTENERS, INC., RESKA SPLINE PRODUCTS, INC., RIEKE LEASING CO., INCORPORATED, WESBAR CORPORATION reassignment TRIMAS INTERNATIONAL HOLDINGS LLC RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
Abandoned legal-status Critical Current

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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
    • B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
    • B65D39/08—Threaded or like closure members secured by rotation; Bushes therefor
    • B65D39/082—Bung-rings and bungs for bung-holes
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/20—Sealing means
    • B65D2251/205—Inserted

Definitions

  • This invention relates to threaded closures for steel and plastic drums, particularly drums using elastomeric gaskets positioned around the closure for enhanced sealing.
  • the closure has a plurality of sealing rings positioned along its sealing surface for proper positioning and improved contact with the sealing gasket.
  • closure and flange sealing mechanism commonly used in steel drum manufacturing involves using an elastomeric gasket positioned radially on a closure.
  • the closure is threaded into a flange, creating a seal gland between them.
  • the elastomeric seal easily starts into the gland.
  • the gland becomes tighter causing the gasket to be compressed radially like a cork, creating an effective seal.
  • Drum manufacturers perform critical testing on the flange/closure seal to ensure that the seal is adequate.
  • the generally accepted manufacturing method of producing plastic closures for use in this particular application requires the use of a split-block mold, which offers the opportunity for “parting line flash,” otherwise referred to as parting line mismatch, to be created on the closure's radial sealing surface.
  • the sharp edged surface created by the flash or mismatch is not an ideal sealing surface, and provides a potential leak path through the gland. This is especially applicable when hard elastomeric gaskets are used, for example, low density polyethylene gaskets that may or may not be irradiated, or cork gaskets.
  • the polyethylene gaskets are preferred when sealing aggressive solvents that soft gaskets are typically not chemically compatible with.
  • closure manufacturers In an effort to improve the closure performance, closure manufacturers often perform a secondary operation on the closure when parting line flash or mismatch is present on the sealing surface. Secondary operations include machining the entire outer circumference of the closure sealing gland, or else removing the flash or mismatch through a secondary machining process. In either case, the secondary operations add cost to the product, and lower potential profits to the manufacturer.
  • This invention creates an improved sealing surface on the closure which drastically improves the performance of a hard elastomeric gasket when used in the above described gland, eliminating the need for a secondary operation to remove parting line flash on the closure sealing surface.
  • the invention consists of a plurality of sealing rings placed on the diameter of a closure used to seal steel or plastic drums that utilize a diametric or cork style sealing gasket.
  • the lower rings bite into the gasket as the closure is threaded into the flange, thereby improving the seal. This is due to the radial compression that occurs to the seal as the closure is threaded into the flange.
  • the upper rings cause the gasket to remain vertical so that it enters the gland in the proper orientation. Without the upper ring, the gasket can cock to one side or the other, and potentially be forced out of the gland as the closure is threaded into the flange, rather than becoming compressed within the gland. Also, the upper rings act as additional sealing components, since they too are compressed into the gasket as the closure is tightened into the flange.
  • FIG. 1 is an exploded perspective view of the closure according to the present invention in combination with the sealing gasket and the container;
  • FIG. 2 is a side elevational view of the closure embodying the present invention
  • FIG. 3 is cross-sectional view of a portion of the closure showing the gasket in place over the sealing bands with the closure being partially threaded into the container;
  • FIG. 4 is an cross-sectional view of a portion of the closure showing the sealing bands of the instant invention embedded within the gasket as the gasket is compressed between the closure and the container;
  • FIG. 5 is an enlarged side elevational view of the portion “5” of the closure in FIG. 1, showing the sealing bands.
  • the instant invention is directed towards a threaded closure 10 adapted to close and seal a container 50 such as a steel or plastic drum.
  • This closure 10 provides selective access to materials within the container 50 .
  • the closure 10 embodying the present invention is threadably received within the container 50 opening to seal the container 50 and maintain material within the container 50 during transport and storage.
  • a gasket 60 slips over the threads 38 of closure 10 and nests between the closure 10 and the container 50 to ensure proper sealing.
  • the closure 10 comprises a cap portion 20 over an annular side wall portion 30 , the annular side wall portion 30 being adapted to matingly fit within the opening of the container 50 .
  • the annular side wall portion 30 comprises a top neck section 32 , a threaded section 34 and a bottom neck section 36 beneath the threaded section 34 .
  • the base of the bottom neck section 36 may be rounded, tapered or otherwise adapted to be readily inserted within a corresponding opening in the container 50 .
  • the threaded section 34 comprises external threads 38 adapted to cooperate with the corresponding threads 52 of the container 50 opening, for secure attachment of the closure 10 to the container 50 .
  • the top neck section 32 includes a plurality of annular sealing bands 40 and 42 .
  • the annular sealing bands 40 and 42 appear as upwardly and outwardly extending barbs (see FIG. 5).
  • Extending outward from the top of the top neck section 32 is the cap portion 20 of the closure 10 .
  • This overlapping cap portion 20 forms a shoulder 22 that supports the closure 10 above the opening of the container 50 .
  • the cap portion 20 also provides a gripping surface for an operator to remove the closure 10 from the container 50 .
  • the closure 10 is shown partially threaded into the container 50 .
  • the container 50 has an upwardly extending annular flange 52 around the opening for receiving and supporting the closure 10 .
  • the mating threads 54 of the container 50 are situated on the inner surface of the upwardly extending annular flange 52 .
  • a sealing gasket 60 situated under the shoulder 22 between the cap portion 20 and the top neck section 32 of the closure 10 .
  • the gasket 60 is placed on the closure 10 by moving the gasket 60 over the threads 38 .
  • the gasket 60 is then anchored under the shoulder 22 beneath cap portion 20 and over the sealing bands 40 and 42 .
  • FIG. 4 as the closure 10 is threaded within the container 50 , the gasket 60 is radially compressed between the closure 10 and the annular flange 52 of the container 50 , thereby providing an enhanced sealing mechanism.
  • the conventional method of using a gasket 60 to provide enhanced sealing is widely used within the industry, it has been observed that the sealing qualities of the gasket 60 are greatly reduced by the presence of a parting line flash or a parting line mismatch on the sealing surface of the top neck portion of the closure 10 .
  • the parting line flash is a direct result of the split-block mold used in the manufacture of the closure 10 .
  • the parting line flash disrupts the sealing surface of the closure 10 by causing a line of separation between the sealing surface of the top neck section 32 and the gasket 60 . This is most often observed when a hard elastomeric gasket or a cork gasket is used.
  • the preferred embodiment employs a plurality of annular sealing bands 40 and 42 around the sealing surface of the top neck section 32 of the closure 10 .
  • the sealing bands 40 and 42 may have many shapes, for example, the bands 40 and 42 may appear rounded or shaped like triangular teeth. However, in the preferred embodiment the sealing bands are shaped as upward and outwardly extending saw-tooth barbs.
  • the top surface 41 of the sealing bands 40 and 42 is slightly displaced downwards from horizontal. A 10° downward angle may be used.
  • the upwardly angled surface 43 is preferably displaced approximately 50° degrees from horizontal.
  • This sawtooth shape facilitates both passing the gasket 60 over the sealing bands 40 and 42 and proper seating of gasket 60 under the cap portion 20 .
  • the shape of the bands 40 and 42 allow the gasket 60 to slide upwards over the upwardly angled surface 43 with the minimum of resistance.
  • the reduced downward slope of top surface 41 resists the downward movement of gasket 60 , thereby holding the gasket 60 in its proper position abutting the shoulder 22 .
  • the actual tips may be rounded due to limitation inherent in the molding process.
  • the gasket 60 is radially compressed between the closure 10 and the container 50 .
  • the sealing bands 40 and 42 become embedded within the gasket 60 .
  • the upper sealing bands serve additionally to maintain the gasket 60 in the proper vertical orientation with respect to the sealing surface of the top neck section 32 , as the gasket 60 is compressed between the container 50 and the closure 10 .
  • the resulting sealing band-gasket 60 interface is sufficient to overcome the negative sealing effects of the parting line flash, thereby creating an improved seal between the closure 10 and the container 50 , without the need for additional and costly secondary operations on the closure 10 to remove the parting line flash.
  • the invention may be practiced with a single sealing band 40 around the sealing surface of the top neck section 32
  • the preferred embodiment employs two or more sealing bands 40 and 42 .
  • the additional sealing bands provide positional stability to the gasket as the closure is being threaded into the container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
US09/800,793 2001-03-07 2001-03-07 Sealing surface for plastic closure with radial seal Abandoned US20020125205A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US09/800,793 US20020125205A1 (en) 2001-03-07 2001-03-07 Sealing surface for plastic closure with radial seal
MXPA03008074A MXPA03008074A (es) 2001-03-07 2002-03-07 Supeficie de sellado para un cierre de plastico con sello radial.
CA002440093A CA2440093A1 (fr) 2001-03-07 2002-03-07 Surface d'etancheite amelioree de fermeture plastique a joint d'etancheite radial
PCT/US2002/007189 WO2002070360A1 (fr) 2001-03-07 2002-03-07 Surface d'etancheite amelioree de fermeture plastique a joint d'etancheite radial
EP02723370A EP1368243A1 (fr) 2001-03-07 2002-03-07 Surface d'etancheite amelioree de fermeture plastique a joint d'etancheite radial
BR0208055-9A BR0208055A (pt) 2001-03-07 2002-03-07 Superfìcie de vedação para fechamento plástico com selo radial

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/800,793 US20020125205A1 (en) 2001-03-07 2001-03-07 Sealing surface for plastic closure with radial seal

Publications (1)

Publication Number Publication Date
US20020125205A1 true US20020125205A1 (en) 2002-09-12

Family

ID=25179372

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/800,793 Abandoned US20020125205A1 (en) 2001-03-07 2001-03-07 Sealing surface for plastic closure with radial seal

Country Status (6)

Country Link
US (1) US20020125205A1 (fr)
EP (1) EP1368243A1 (fr)
BR (1) BR0208055A (fr)
CA (1) CA2440093A1 (fr)
MX (1) MXPA03008074A (fr)
WO (1) WO2002070360A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050189355A1 (en) * 2004-03-01 2005-09-01 Masterchem Industries, Inc. Container cap
US20070164561A1 (en) * 2004-03-11 2007-07-19 Joong-hee Lee High gas-tightened metallic nozzle-boss for a high pressure composite vessel
US20080087670A1 (en) * 2002-11-18 2008-04-17 Van De Klippe Cornelis R Closure plug improvement
US20090218358A1 (en) * 2008-02-16 2009-09-03 Schutz Gmbh & Co. Kgaa Wide-neck drum of thermoplastic material
US20130087165A1 (en) * 2010-03-18 2013-04-11 Yong Jun Lee Sealing ring structure of a cosmetic container
US10285522B2 (en) 2016-08-17 2019-05-14 Impel Studio LLC Travel vessel for beverages
US20210077242A1 (en) * 2018-02-15 2021-03-18 Spinal Balance, Inc. Protective container for sterilized medical implants
CN112978064A (zh) * 2016-08-17 2021-06-18 推进工作室有限责任公司 饮料容器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5320236A (en) * 1992-04-27 1994-06-14 Owens-Illinois Closure Inc. Plastic container package with linerless sealing closure system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE880412C (de) * 1943-07-01 1953-06-22 Mauser Kg Spundverschluss fuer Metallgefaesse
DE3943028A1 (de) * 1989-12-27 1991-07-04 Duttenhoefer Gmbh Gottlieb Kombinationsbehaelter
DE29703338U1 (de) * 1997-02-25 1997-04-30 Fischer, Heinrich, 78083 Dauchingen Verschlußstopfen aus Kunststoff

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5320236A (en) * 1992-04-27 1994-06-14 Owens-Illinois Closure Inc. Plastic container package with linerless sealing closure system

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8453867B2 (en) 2002-11-18 2013-06-04 Greif International Holding B.V. Closure plug with improved gasket seat and retaining lip
US20080087670A1 (en) * 2002-11-18 2008-04-17 Van De Klippe Cornelis R Closure plug improvement
US7810668B2 (en) 2002-11-18 2010-10-12 Greif International Holding Bv Closure plug with improved gasket seat
US20110024424A1 (en) * 2002-11-18 2011-02-03 Greif International Holding Bv Closure Plug
US8991633B2 (en) 2002-11-18 2015-03-31 Greif International Holding Bv Closure plug
US20050189355A1 (en) * 2004-03-01 2005-09-01 Masterchem Industries, Inc. Container cap
US20070164561A1 (en) * 2004-03-11 2007-07-19 Joong-hee Lee High gas-tightened metallic nozzle-boss for a high pressure composite vessel
US7648042B2 (en) * 2004-03-11 2010-01-19 Korea Composite Research Co., Ltd. High gas-tightened metallic nozzle-boss for a high pressure composite vessel
US20090218358A1 (en) * 2008-02-16 2009-09-03 Schutz Gmbh & Co. Kgaa Wide-neck drum of thermoplastic material
US8727175B2 (en) * 2008-02-16 2014-05-20 Schütz GmbH & Co. KGaA Wide-neck drum of thermoplastic material
US8789540B2 (en) * 2010-03-18 2014-07-29 Yong Jun Lee Sealing ring structure of a cosmetic container
US20130087165A1 (en) * 2010-03-18 2013-04-11 Yong Jun Lee Sealing ring structure of a cosmetic container
US10285522B2 (en) 2016-08-17 2019-05-14 Impel Studio LLC Travel vessel for beverages
CN112978064A (zh) * 2016-08-17 2021-06-18 推进工作室有限责任公司 饮料容器
US20210077242A1 (en) * 2018-02-15 2021-03-18 Spinal Balance, Inc. Protective container for sterilized medical implants

Also Published As

Publication number Publication date
BR0208055A (pt) 2004-03-02
WO2002070360A1 (fr) 2002-09-12
CA2440093A1 (fr) 2002-09-12
MXPA03008074A (es) 2003-12-12
EP1368243A1 (fr) 2003-12-10

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