Plastic container

In apparatus for use in securing a closure member to an open end of a shell including a first fixture and a second fixture supported coaxially interiorly of said first fixture, said fixtures being supported for relative movement to jointly define a radially extending space therebetween for receiving an unbonded assembly of said closure member and said shell, at least one of said fixtures being comprised of separate segments, first means for displacing said fixtures relative to one another whereby said fixtures apply pressure to said assembly, and second means for subjecting such pressed assembly to heat energy, the improvement wherein said second means comprises an electromagnetic field generator supported at the pressing periphery of at least one of said fixtures immediate to the pressed assembly and adapted for flexure relative to its supporting fixture and bonding material including magnetizable particles dispersed in plastic, said particles being responsive to such generated electromagnetic field to heat said plastic to its fusion point for flowing thereof into intimate contact with surfaces of said shell and said closure member in facing relation to said bonding material.