Spin-bonded all plastic can and method of forming same

Details Spin-bonded all plastic can and method of forming same Spin-bonded all plastic can and method of forming same

1988-04-29

1989-06-20

Foster, Jimmy G.

Receptacles

Closures

Removable closure retained by adhesive or fusion means

220 67, 220276, 215232, B65D 4100, B65D 1300

Patent

active

048402893

ABSTRACT:
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.

REFERENCES:
patent: 3341059 (1967-09-01), Schild
patent: 4075820 (1978-02-01), Standley
patent: 4548333 (1985-10-01), Kobayashi
patent: 4606470 (1986-08-01), Barlics
patent: 4667842 (1987-05-01), Collins
patent: 4762249 (1988-08-01), Fortuna

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