초록 ▼

The all plastic can includes an upwardly extending open mouth portion with an inwardly tapering exterior surface and a molded plastic end closure member having an integrally formed rim portion extending downwardly therefrom. An outwardly tapering interior surface is provided on the rim and is inclin

The all plastic can includes an upwardly extending open mouth portion with an inwardly tapering exterior surface and a molded plastic end closure member having an integrally formed rim portion extending downwardly therefrom. An outwardly tapering interior surface is provided on the rim and is inclined to mate with the inwardly tapering exterior surface of the open mouth portion of the can body. Relative rotation is imparted between the end closure member and the product filled can body so that spin-bond sealing connects the inwardly tapering exterior surface of the open mouth portion and the interior surface of the rim portion of the end closure member. An intergrally formed outwardly extending rib is provided on the inwardly tapering exterior surface of the open mouth portion to enhance the spin-bond between the end closure member and the can body. A bead of hot melt material is applied around the upper portion of the inwardly tapering exterior surface of the open mouth portion 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 to the can body. The spin-bonding of the end closure member provides a tamper evident closure for the can.

대표청구항 ▼

A thermoplastic synthetic all plastic can comprising (a) a molded plastic can body including a cylindrical side wall portion, a closed bottom, and an open mouth portion extending upwardly from said cylindrical side wall portion and including an inwardly tapering exterior surface, said inwardly taper

A thermoplastic synthetic all plastic can comprising (a) a molded plastic can body including a cylindrical side wall portion, a closed bottom, and an open mouth portion extending upwardly from said cylindrical side wall portion and including an inwardly tapering exterior surface, said inwardly tapering exterior surface being inset inwardly from said cylindrical side wall. (b) a molded plastic end closure member including a circular center panel portion closing the upper end of said can body, and an integrally formed rim portion extending downwardly from the peripheral portion of said circular center panel, said rim portion including a substantially cylindrical outer wall, and an outwardly tapering interior surface inclined to mate with said inset inwardly tapering exterior surface of said open mouth portion of said can body, said rim portion having a thickness corresponding with the distance said inwardly tapering exterior surface of said open mouth portion is inset from said cylindrical side wall, and (c) spin-bond means securing and sealingly connecting said mating surfaces of said inwardly tapering exterior surface of said open mouth portion and said outwardly tapering interior surface of said rim portion to securely bond said molded plastic end closure member to said mold plastic can body, and with said cylindrical side wall portion of said can body and said cylindrical outer wall of said end closure member in substantial alignment to thereby provide a smooth continuous appearance along the juncture of said can body and said end closure member.