Can manufacturing method, can manufacturing device, can, and can manufacturing tool set
AssigneeToyo Seikan Co., Ltd.
InventorsKiyosumi MANITA, Mitsuhiko AOYAGI
Life of this patent
Estimating the term…
Abstract
A can (1) is provided with a mouth part (4), a shoulder part (3), and a body part (2). The shoulder part (3) of the can (1) is decorated, without damaging the shoulder part (3), by forming at least one of a recess and a protrusion by means of a rotating process in which the shoulder part (3) is held between a receiver (11a), having a concave-convex shape, of an inner roll (11) and an outer roll (12) having a convex-concave shape corresponding to the concave-convex shape of the receiver (11a) of the inner roll (11).
Claims21
A method for manufacturing a can comprising:
- forming a shoulder, which is reduced in a diameter toward a side of a mouth of the can, and which has a thickness of 0.1 to 0.3 mm, on a side of an upper end of a cylindrical body of the can in a can axis direction,
- forming a three-dimensionally shaped portion on the shoulder by using an inner roll having a receiver, which has at least one of a concave portion and a convex portion, and which has a diameter reduced portion corresponding to a shape of the shoulder, for receiving the shoulder from inside;
- and
- an outer roll, which has at least one of a concave portion and a convex portion corresponding to the receiver of the inner roll, for pressing the shoulder from outside, wherein, when forming a three-dimensionally shaped portion on the shoulder, the inner roll and the outer roll are rotated relative to the can, in a state in which the receiver of the inner roll and the outer roll clamp the shoulder from outside and inside.
(canceled)
An apparatus forming a three-dimensionally shaped portion on a shoulder of a can comprising:
- an inner roll having a receiver for receiving the shoulder from inside;
- an outer roll for pressing the shoulder from outside;
- and
- a rotating unit for rotating the inner roll and the outer roll relative to the can, wherein the shoulder is formed on a side of an upper end of a cylindrical body of the can in a can axis direction to be reduced in a diameter toward a side of a mouth of the can and to have a thickness of 0.1 to 0.3 mm,
- the receptor of the inner roll has at least one of a concave portion and a convex portion, and has a diameter reduced portion corresponding to a shape of the shoulder, and
- the inner roll and the outer roll are rotated by the rotating unit, in a state in which the receiver of the inner roll and the outer roll clamp the shoulder from inside and outside.
A can, comprising:
- a shoulder, which is formed on a side of an upper end of a cylindrical body of the can in a can axis direction to be reduced in a diameter toward a side of a mouth of the can and to have a thickness of 0.1 to 0.3 mm, has at least one of a concave portion and a convex portion;
- an inside diameter of the mouth is 25 to 60 mm;
- and
- a maximum outside diameter of the shoulder is 50 to 70 mm.
A can, comprising:
- a shoulder, which is formed on a side of an upper end of a cylindrical body of the can in a can axis direction to be reduced in a diameter toward a side of a mouth of the can and to have a thickness of 0.1 to 0.3 mm, has at least one of a concave portion and a convex portion;
- and
- a ratio of a maximum outside diameter of the shoulder to an inside diameter of the mouth is 1.05 to 1.58.
(canceled)
A tool set forming a three-dimensionally shaped portion on a shoulder of a can comprising:
- an inner roll and an outer roll which form the three-dimensionally shaped portion on the shoulder which is formed on a side of an upper end of a cylindrical body of the can in a can axis direction to be reduced in a diameter toward a side of a mouth of the can and to have a thickness of 0.1 to 0.3 mm,
- wherein the inner roll has a receiver, which has at least one of a concave portion and a convex portion, and which has a diameter reduced portion corresponding to a shape of the shoulder, for receiving the shoulder from inside;
- and
- the outer roll, which has at least one of a concave portion and a convex portion corresponding to the receiver of the inner roll, and pressed the shoulder from outside, and
- the receiver of the inner roll and the outer roll are rotated relative to the can, in a state in which the receiver of the inner roll and the outer roll clamp the shoulder from outside and inside.
Dependencies are inferred from the claim text.