Convenience opening of containers for liquid products

A container end member for withstanding internal pressures of at least 90 pounds per square inch for pressurized beverages comprising a panel presenting outer and inner surfaces and having a plurality of openings shaped with at least one short lateral dimension, each opening having a corner edge at the juncture of the outer surface and margin of the opening,

• a blow-out resisting peelable non-resilient flexible closure tape for said openings including a thermoplastic material sealed to the outer surface only of said member,
• a peelable adhesive bonding said thermoplastic material of the tape solely to the outer surface of the panel in covering relation to said openings sufficient to hold said internal pressure,
• said plastic material having areas relatively thinner than the remainder of the tape disposed immediately about said openings sufficient to hold said pressure and having thicker portions of said material within said openings comprising beads having an arcuate surface opposing and diverging from the margin of the respective opening in a direction transversely of the panel away from the associated corner edge and disposed in covering relation to said corner edge and extending only slightly beyond said corner edge into the opening and terminating between the inner and outer surfaces of the panel, the beads being thicker than other portion of the thermoplastic material in alignment with the openings.

A container end panel for pressurized beverages, said panel having a vent opening and a plurality of small openings grouped in an area spaced from said vent opening and disposed adjacent to the perimeter of the panel and providing a pour aperture for liquid contents in a container.

• said panel having external and internal sides,
• a tape of non-resilient flexible material for closing all of said openings formed at least partially of a film of thermoplastic material,
• spots of peelable adhesive on the panel localized about said vent opening and said area of the openings solely on the external side of the panel and securing the tape to said end panel in corresponding locations,
• said film of material being squeezed into a thin layer about said openings relatively thinner than the remainder of the film to provide an adhesively strong section sufficient to prevent the pressure from peeling the tape off the panel and to provide bosses on the tape transversely thicker than said layer extending into and bounded by the edges of said openings, said bosses terminating intermediate the external and internal sides of the end panel.