ROTATIONSGESCHWEISSTE KUNSTSTOFFDOSE UND VERFAHREN ZU IHRER HERSTELLUNG.

摘要

The all plastic can includes an upwardly extending open mouth portion (20) with an inwardly tapering exterior surface (21) and a molded plastic end closure member (30) having an integrally formed rim portion (40) extending downwardly therefrom. An outwardly tapering interior surface (42) is provided on the rim (40) and is inclined to mate with the inwardly tapering exterior surface (21) of the open mouth portion (20) of the can body. Relative rotation is imparted between the end closure member (30) and the product filled can body so that spin-bond sealing connects the inwardly tapering exterior surface (21) of the open mouth portion (20) and the interior surface (42) of the rim portion (40) of the end closure member (30). An integrally formed outwardly extending rib (22) is provided on the inwardly tapering exterior surface (21) of the open mouth portion (20) to enhance the spin-bond between the end closure member (30) and the can body. A bead of hot melt material (50) is applied around the upper portion of the inwardly tapering exterior surface (21) of the open mouth portion (20) and serves to prevent entry into the interior of the product filled can body of any plastic dust particles generated by the spin-bonding of the end closure member (30) to the can body. The spin-bonding of the end closure member (30) provides a tamper evident closure for the can.