Container having tamper evident seal and imaged polymer film use

Details Container having tamper evident seal and imaged polymer film use Container having tamper evident seal and imaged polymer film use

1982-11-05

1984-03-13

Norton, Donald F.

Bottles and jars

Content indicating

40310, 215230, 220377, 350359, B65D 5100

Patent

active

044362137

ABSTRACT:
There is provided a tamper evident container seal comprising a normally transparent polymer film which can be rendered translucent by stretching and transparent by relaxing. There is also provided a polymer film useful as a seal of the same type of film which bears an image which is not readily visible when the film is relaxed, but becomes readily visible when the film is stretched.

REFERENCES:
patent: 3817417 (1974-06-01), Edwards
patent: 3896965 (1975-07-01), Cornell
patent: 4206980 (1980-06-01), Volgren

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