Package making – Methods – With contents treating
Patent
1980-05-08
1982-07-13
Spruill, R. L.
Package making
Methods
With contents treating
53328, 53489, B65B 728, B67B 104, B67B 324
Patent
active
043387640
ABSTRACT:
The disclosure is of a novel closure for air evacuated tubular containers and comprises a tubular body having flexible, elastic sidewalls, an open end, a closed end formed by a cannula-pierceable, flexible, elastic end wall having a concavo-convex configuration in cross-section and a flange disposed radially about the periphery of the open end. The novel closure structure takes advantage of the vacuum force in the container to maintain a gas-proof, hermetic seal, reduces the thickness required of the closure to maintain the hermetic seal and is easier to assemble in an air evacuated container. The disclosure is also of a novel method of assembling the closure of the invention in an air evacuated tubular container.
REFERENCES:
patent: 2746632 (1956-05-01), Bramming
patent: 2845203 (1958-07-01), Potach
patent: 2947070 (1960-08-01), Peppercorn
patent: 3358869 (1967-12-01), Palmer et al.
Becton Dickinson and Company
Lin K. Y.
Rodrick Richard J.
Spruill R. L.
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