EP 0067650 A1 19821222 - Tamper-indicating closure.
Title (en)
Tamper-indicating closure.
Title (de)
Verschluss mit Originalitätssicherung.
Title (fr)
Capsule de bouchage à bague de garantie.
Publication
Application
Priority
- US 27177581 A 19810608
- US 27177681 A 19810608
- US 28423081 A 19810717
Abstract (en)
A thermoplastic closure (10) for fitment to a container for packaging a product capable of producing internal container pressure, e.g., a carbonated beverage, is disclosed. The closure (10) comprises a top wall (12) and an annular sidewall (14). An closure thread (20) is provided on the inside surface of the sidewall (14) and is preferably extended to require the user to make two turning motions to achieve removal. Thread (20) cooperates with the container neck thread (42) to achieve fitment of the closure (10) to the container neck (40). A sealing system (22) adjacent the top wall of the closure provides sealing of the closure to the container. Gas venting structure (26) is provided on the closure for venting of pressurized gas from the container upon loss of the seal when the closure is rotated to remove it from the container. Stand-off protuberances (32) are provided about the lower inside surface (28) of sidewall (14). A heat-shrinkable tamper-indicating means (16) is attached to the lowermost edge of the sidewall of the closure (10). Application of heat to the tamper-indicating means (16) causes it to shrink towards the container and to a point of interference with a container flange (48). The combination of tamper-indication means (16), venting structure (26) and protuberances (32) enables a closure to be formed with tamperproof properties and compatible resistance to premature release from a pressurized container.
IPC 1-7
IPC 8 full level
B65D 41/04 (2006.01); B65D 41/34 (2006.01); B65D 51/16 (2006.01)
CPC (source: EP)
B65D 41/045 (2013.01); B65D 41/3466 (2013.01); B65D 51/1688 (2013.01)
Citation (search report)
- [Y] GB 2062593 A 19810528 - ETHYL PROD
- [Y] EP 0009854 A1 19800416 - METAL CLOSURES LTD [GB]
- [A] US 2990079 A 19610627 - GARVEY LEO J
- [A] FR 2348114 A1 19771110 - CONSUMERS GLASS CO LTD [CA]
- [AD] US 3888347 A 19750610 - KRAMER THOMAS ROLLIN
- [A] GB 2029808 A 19800326 - METAL CLOSURES LTD
- [XE] EP 0060218 A2 19820915 - OBRIST AG ALBERT [CH]
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0149198 A2 19850724; EP 0149198 A3 19851030; EP 0149198 B1 19880713; AU 8466382 A 19821216; CA 1195290 A 19851015; DE 3272712 D1 19860925; EP 0067650 A1 19821222; EP 0067650 B1 19860820; NZ 200879 A 19850712
DOCDB simple family (application)
EP 84115976 A 19820608; AU 8466382 A 19820608; CA 404733 A 19820608; DE 3272712 T 19820608; EP 82302952 A 19820608; NZ 20087982 A 19820608