Multiple-wall plastic container and method of making same

Details Multiple-wall plastic container and method of making same Multiple-wall plastic container and method of making same

1990-10-22

1992-12-08

Pollard, Steven M.

Receptacles

High-pressure-gas tank

Multilayer container

220469, 220673, 220675, B65D 600

Patent

active

051690241

ABSTRACT:
A high pressure plastic container is made by rotationally moulding a first wall of plastic material, and a second wall enclosing and bonded to the first wall. One of the walls is integrally formed with a plurality of circumferentially-extending axially-spaced ribs of a hollow construction. The other wall may be unribbed, or may be integrally formed with a plurality of axially-extending circumferentially-spaced hollow ribs. The hollow ribs, are filled with a rigid plastic foam.

REFERENCES:
patent: 1907884 (1933-05-01), Sexton
patent: 3120570 (1964-02-01), Kennedy et al.
patent: 3298554 (1967-01-01), Piker
patent: 3312373 (1967-04-01), Gentry
patent: 4257527 (1981-03-01), Snyder et al.

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