Can lid and beverage can
AssigneeShowa Aluminum Can Corporation
InventorsShinichi Ojima, Kazunori Ikeda, Tetsuo Kashiwazaki, Asumi Suwa
Life of this patent
Estimating the term…
Abstract
A first score line (430) is provided with a modified groove width portion (435) in which the groove width differs from the groove width of other portions. This modified groove width portion (435) is formed by imparting curvature to a point of a first side surface (430B) and this portion of a second side surface (430C) are respectively distended in an outward direction. To describe further, the modified groove width portion (435) is formed by forming respective recessed portions in the first side surface (430B) and the second side surface (430C). In so doing, rupture of a panel can take place in satisfactory fashion along a score line having a branched portion.
Claims8
A can lid comprising:
- a panel that is attachable to an opening portion of a can body;
- at least one branched score line that is formed on the panel, that extends toward a predetermined extending direction, then is branched at a branch part, and further extends toward a plurality of directions, that comprises a first branched score line and a second branched score line on a downstream side beyond the branch part in the extending direction, and that promotes cracking of the panel;
- and
- a speed decreasing unit that is provided so as to correspond to the at least one branched score line of the first branched score line and the second branched score line, and that temporarily decreases a progress rate in progressing cracking of the panel along the at least one branched score line of the first branched score line and the second branched score line.
A can lid comprising:
- a panel that is attachable to an opening portion of a can body;
- at least one branched score line that is formed on the panel, that extends toward a predetermined extending direction, then is branched at a branch part, and further extends toward a plurality of directions, that comprises a first branched score line and a second branched score line on a downstream side beyond the branch part in the extending direction, and that promotes cracking of the panel, and
- a unit that is provided to correspond to one or both of the first branched score line and the second branched score line, and that temporarily delays cracking of the panel progressing along the at least one branched score line of the first branched score line and the second branched score line.
Dependencies are inferred from the claim text.