Process of making easy open can end
View Patent ↗An easy open end for a container includes an end panel having a score defined therein that defines a removable end panel portion. The score is preferably notched to define a bottom edge having a continuous V-shaped recess. A first double fold is defined adjacent to and positioned radially inward from the score that defines beneath the score a first outwardly projecting extending cut protection bead. A second double fold is defined adjacent to and positioned radially outward from the score that defines beneath the score a second inwardly projecting cut protection bead. The end panel is elastically deformed in an area near the score so as to define a concave depression about the score, which provides enhanced cut protection.
1. A method of making an easy-open end for a container, comprising steps of:
(a) providing a can end having a peripheral edge and a panel, said panel having opposing first and second sides with said first side adapted to face toward the inside of a container when said end is affixed thereto;
(b) forming first and second grooves in said panel spaced from said peripheral edge, said grooves extending below the level of said first side to form inner and outer beads;
(c) forming a central bead in said panel between said first and second grooves, said central bead extending above the level of said second side;
(d) forming a score along said central bead on said second side of said panel;
(e) forcing said inner and outer beads toward each other and then toward said first side while forcing said central bead toward said second side, this step being performed in such a manner that said central bead elastically deforms in such a manner that said central bead will bend at said score.
2. A method of making an easy open end for a container according to claim 1 , wherein step (e) is performed in such a manner that said central bead will bend concavely about said score.
3. A method of making an easy open end for a container according to claim 1 , wherein said step of forming a score along said central bead on said second side of said panel comprises forming a score having a notched bottom, whereby elastic deformation of said central bead at said score during step (e) is promoted.
4. A method of making an easy open end for a container according to claim 3 , wherein said notched bottom is tapered to a continuous V-shaped recess.
5. A method of making an easy open end for a container according to claim 1 , wherein step (b) is performed by forming first and second concentric grooves in said panel spaced from said peripheral edge.
6. An easy-open end that is made according to claim 1 .