Metal cans with peelable lids
AssigneeCrown Packaging Technology, Inc.
InventorFlorian Christian Gregory Combe
Life of this patent
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Abstract
A method of sealing a peelable lid to a circumferential and inwardly projecting flange formed in a tubular metal can body, where the flange has a sealing surface having a substantially V-shaped profile. The method comprises pressing the peelable lid against the sealing surface of the flange using a punch, an engagement surface of the punch having a generally V-shaped profile such that the apex of the punch presses the peelable lid into the valley of the engagement surface of the flange.
Claims4
A method of sealing a peelable lid to a circumferential and inwardly projecting flange formed in a tubular metal can body,
- comprising the steps of:
- (i) forming a V-shaped profile into a sealing surface of the flange;
- and
- (ii) after forming the V-shaped profile, engaging a V-shaped engagement profile of a punch with the peelable lid to press the peelable lid against the flange such that an apex of the punch engagement profile presses the peelable lid into a valley of the flange profile.
Dependencies are inferred from the claim text.