Container assembly having a heat-sealed metal end, a metal end therefor, and a method for making same

摘要

A container assembly includes a container body having a side wall encircling an axis, and a metal end for attachment to an upper edge of the side wall via heat-sealing. The outer peripheral region is shaped prior to application to the container body such that an annular channel is defined between an inner chuck wall and an outer chuck wall of the metal end. The metal end is pushed straight onto the side wall such that the upper edge of the side wall is received into the channel. The surfaces of the side wall and the opposing surfaces of the chuck walls have heat-sealable material thereon. The metal end is heated to melt and fuse the heat-sealable layers, thereby sealing the metal end onto the side wall. The metal end is shaped such that the free edge of the outer chuck wall is not exposed.

主权项

1. A container assembly comprising:
a container body including a side wall that defines an upper edge circumscribing a top opening of the container body, a heat-sealable material being disposed on a radially inner surface of the side wall and on a radially outer surface of the side wall adjacent the upper edge; and a top metal end for being affixed to the upper edge of the side wall to seal closed the top opening, the top metal end comprising a metal sheet having a peripheral edge, the sheet prior to a first application of the top metal end to any container body having an outer peripheral region of the sheet that includes: an outwardly angled inner chuck wall that includes a substantially linear upper portion that extends upwardly to a top rim of the metal end, the top rim comprising an outwardly curled, downwardly facing upper U-shaped section; a skirt extending downwardly from the top rim, a lower end portion of the skirt being formed as an inwardly curled, upwardly facing lower U-shaped section; an outwardly angled substantially linear outer chuck wall extending upwardly from the lower U-shaped section, the peripheral edge of the metal sheet defining a top edge of the outer chuck wall, wherein the outer chuck wall is spaced from the inner chuck wall and is approximately parallel to the upper portion thereof so as to define an annular channel therebetween configured to allow the top metal end to be pushed onto the upper edge of the side wall such that the upper edge is received into the annular channel; and heat-sealable material disposed on each of opposing surfaces of the inner and outer chuck walls prior to said first application of the top metal end to any container body; whereby the top metal end is adapted to be affixed to the container body by thermal fusion of the heat-sealable materials provided on said inner and outer surfaces of the side wall and on said opposing surfaces of the inner and outer chuck walls.