Tamper-evident, reclosable, plastic lid

Details Tamper-evident, reclosable, plastic lid Tamper-evident, reclosable, plastic lid

1987-05-05

1988-02-16

Hall, George T.

Receptacles

Closures

Superposed closures for common opening

220276, 220307, 220339, 222153, B65D 5122

Patent

active

047249773

ABSTRACT:
An integrally molded, generally rectangular, tamper-evident, reclosable lid for a container is formed from a rigid thermoplastic and has a peripheral wall section that defines a recess, with a rupturable planar member extending across the recess, and has an integral closure member hingedly connected to the peripheral wall section. The planar member and closure member provide a double seal prior to opening by a user, and after removal of the rupturable portion of the planar member, the integral hinged closure member provides a seal for the contents of the container. The lid is formed from a rigid plastic having a tensile modulus and flexural modulus in excess of 100.times.10.sup.3 p.s.i. and a melting point in excess of 140.degree. C. to provide a lid resistant to removal from a container as well as other properties desired.

REFERENCES:
patent: 3282477 (1966-11-01), Henohert
patent: 3434620 (1969-03-01), Laurizio
patent: 3499572 (1970-03-01), Reukberg
patent: 4059201 (1977-11-01), Foster
patent: 4210618 (1980-07-01), Piltz et al.
patent: 4212409 (1980-07-01), Jeppsson
patent: 4267937 (1981-05-01), Piltz et al.
patent: 4380303 (1983-04-01), Allen et al.
patent: 4448324 (1984-05-01), Jeppson et al.
patent: 4463869 (1984-08-01), Lewis
patent: 4533062 (1985-08-01), Krautkramer

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