Synthetic resin vessel and heat sealed lid

Details Synthetic resin vessel and heat sealed lid Synthetic resin vessel and heat sealed lid

1984-07-17

1986-08-12

Hall, George T.

Receptacles

Closures

Removable closure retained by adhesive or fusion means

220260, 229 43, B65D 4100

Patent

active

046051422

ABSTRACT:
A synthetic resin vessel composed of a sheet of a synthetic resin and having a top opening, wherein: a flange is formed integrally with and along the edge portion of the opening; a continuous ridge protuberance is formed on and along the top face of the flange; and a lid is heat-sealed through the protuberance to close the opening and is subsequently openable by a seal-opening operation, the synthetic resin vessel being characterized in that a projection extending toward the outer periphery is formed in one or both of portions of the protuberance for starting and terminating the seal-opening operation. This synthetic resin vessel has a high sealing property and a good peelability.

REFERENCES:
patent: 4044941 (1977-08-01), Knudsen
patent: 4207989 (1980-06-01), Ingemann
patent: 4215797 (1980-08-01), Chen

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