Method and apparatus for making double wall containers

Details Method and apparatus for making double wall containers Method and apparatus for making double wall containers

1991-01-04

1993-04-20

Robinson, Ellis P.

Stock material or miscellaneous articles

Sheets or webs edge spliced or joined

428 58, 428 60, 428 61, 52536, 52588, 220 15, B32B 300

Patent

active

052041492

ABSTRACT:
The individual structural member of the invention includes a pair of parallel panels which are spaced from each other to define a cavity therebetween. The panels are staggered in the longitudinal direction so that an end section of one panel extends beyond an end of the other panel and vice versa to form a front extension section and a rear extension section of the structural member. The non-extension end edge of each panel is connected to the opposing panel by a flat wall which is normal to the plane of both panels. Each extension section is provided with a flange. The front section flange of one structural member is adapted to interlock with the rear section flange of another structural member so that the structural members can be assembled in end to end fashion with the panels of one structural member being coplanar with the panels of adjoining structural members to form a double wall of, for example, a container.

REFERENCES:
patent: 3039575 (1962-06-01), Graham
patent: 3332192 (1967-07-01), Kessler
patent: 3884444 (1975-05-01), Dashew
patent: 4091950 (1978-05-01), Craven
patent: 4214669 (1980-07-01), McQuiston
patent: 4577772 (1986-03-01), Bigliardi
patent: 5050362 (1991-09-01), Tal

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