Abstract: The rim of a pail body is provided with a compound curl for reception of a lid. The compound curl comprises as upper region extending away from the wall of the pail body or its outside, a lower region extending from the outer periphery of the said upper region towards the wall of the pail body and a rim edge part which extends from the inner periphery of the said lower region away from the wall of the pail body and is intermediate the said upper and lower regions whereby a lid applied over the rim with the central part thereof located within said rim can be clamped onto the said compound curl to form a seam therewith.The said lower region and the said rim edge part constitute a smaller pre-curl within the compound curl, the rim edge being spaced below the said upper region so that in clamping on the lid, a region of the said rim edge part is brought into supporting engagement with the said upper region.

Abstract: A pail body having a longitudinal axis and an open end has an end wall fitted in the open end, said fitting involving outward bending of a flange at the open end of the pail body and interengagement of this body flange with a flange on the end wall introduced into the open end of the pail body. A region of the pail body adjacent the body flange is formed so that it is outwardly inclined with respect to the axis of the pail body at a small angle (e.g. from 4.degree. to 12.degree.), said angle corresponding to the angle of taper on a tapering rim part on the end wall introduced into the open end of said pail body, thus promoting close contact between said body region with said tapering rim part.

Abstract: The rim of a pail body is provided with a compound curl for reception of a lid. The compound curl comprises an upper region extending away from the wall of the pail body on its outside, a lower region extending from the outer periphery of the said upper region towards the wall of the pail body and a rim edge part which extends from the inner periphery of the said lower region away from the wall of the pail body and is intermediate the said upper and lower regions whereby a lid applied over the rim with the central part thereof located within said rim can be clamped onto the said compound curl to form a seam therewith. The said lower region and the said rim edge part constitute a smaller pre-curl within the compound curl, the rim edge being spaced below the said upper region so that in clamping on the lid, a region of the said rim edge part is brought into supporting engagement with the said upper region.