Receptacles – Closures – With closure opening arrangements for means
Patent
1993-03-15
1994-10-11
Moy, Joseph Man-Fu
Receptacles
Closures
With closure opening arrangements for means
220359, 220258, B65D 1740
Patent
active
053539435
ABSTRACT:
An easy-opening closure for hermetic sealing of the open end of a packaging container includes an end member for being double-seamed to the open end of the container and having an interior ledge portion defining a large central opening and a composite lidding member of at least two polymer layers defining a predetermined peel strength at an interfacial plane for controlled delamination of the two layers. The composite lidding member covers the central opening and is bonded to the ledge portion to define a bond strength greater than the peel strength of the two polymer layers. The lidding member has a continuous ring-shaped notch cut into the bottom polymer layer adjacent the ledge portion and a discontinuous ring-shaped notch cut into the top polymer layer and spaced inwardly from the first notch to define a small unnotched portion between its ends and to define with the first notch a ring member therebetween which is connected at the unnotched portion to the central portion of the lidding member. With this construction, the force required to open the closure from the inside of the container is greater than the force required to open the closure from the outside of the container. The closure is circumferentially opened by upward pulling of the bonded overlapping portion of the composite lidding member to cause delamination and peeling of the top polymer layer from the bottom polymer layer bonded to the end member in an area between the first notch and an outside circumference of the lidding member and removal of the ring member between the first and second notches.
REFERENCES:
patent: 2122537 (1938-07-01), Pfeffer, Jr.
patent: 2858060 (1958-10-01), Kuchler
patent: 3108708 (1963-10-01), Betner
patent: 3256981 (1966-06-01), Kurtz
patent: 3276616 (1966-10-01), Lurie
patent: 3318477 (1967-05-01), Southwick, Jr. et al.
patent: 3335939 (1967-08-01), Robinson, Jr.
patent: 3402873 (1968-09-01), Lauterbach, Jr.
patent: 3483964 (1969-12-01), Muehling et al.
patent: 3515334 (1970-06-01), Jacobson
patent: 3572579 (1971-03-01), Mueller et al.
patent: 3765561 (1973-10-01), Hekal et al.
patent: 3832963 (1974-09-01), Gayner et al.
patent: 3868919 (1975-03-01), Schrecker et al.
patent: 3997677 (1976-12-01), Hirsch et al.
patent: 4045860 (1977-09-01), Winckler
patent: 4091930 (1978-05-01), Buchner et al.
patent: 4207989 (1980-06-01), Ingemann
patent: 4280653 (1981-07-01), Elias
patent: 4350263 (1982-09-01), Hoffman
patent: 4351473 (1982-09-01), Manizza
patent: 4359852 (1982-11-01), Hoffman et al.
patent: 4363582 (1982-12-01), Bloeck et al.
patent: 4433793 (1984-02-01), Ingemann
patent: 4448324 (1984-05-01), Jeppsson et al.
patent: 4529100 (1985-07-01), Ingemann
patent: 4533576 (1985-08-01), Tanahashi et al.
patent: 4540105 (1985-09-01), Wright
patent: 4544080 (1985-10-01), Wright et al.
patent: 4544093 (1985-10-01), Stark et al.
patent: 4548333 (1985-10-01), Bobayashi et al.
patent: 4555056 (1985-11-01), Bernhardt
patent: 4556152 (1985-12-01), Bogren
patent: 4586624 (1986-05-01), Shaw
patent: 4589568 (1986-05-01), Ito et al.
patent: 4626157 (1986-12-01), Franek et al.
patent: 4636273 (1987-01-01), Wolfersperger
patent: 4643329 (1987-02-01), Mobberley et al.
patent: 4674649 (1987-06-01), Pavely
patent: 4689099 (1987-08-01), Ito et al.
patent: 4693390 (1987-09-01), Hekal
patent: 4693391 (1987-09-01), Roth
patent: 4801041 (1989-01-01), Takata et al.
patent: 4810541 (1989-03-01), Newman et al.
patent: 4858780 (1989-08-01), Odaka et al.
patent: 4865217 (1989-09-01), Yoshimoto
patent: 4889731 (1989-12-01), Williams, Jr.
patent: 4890759 (1990-01-01), Scanga et al.
patent: 4905838 (1990-03-01), Suzuki et al.
patent: 4913307 (1990-04-01), Takata et al.
patent: 5054642 (1991-10-01), Yoshida
patent: 5069355 (1991-12-01), Matuszak
patent: 5240133 (1933-08-01), Thomas, Jr.
Man-Fu Moy Joseph
Sonoco Products & Company
LandOfFree
Easy-opening composite closure for hermetic sealing of a packagi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Easy-opening composite closure for hermetic sealing of a packagi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Easy-opening composite closure for hermetic sealing of a packagi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1653376