B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
190/38, 190/13.5
B65D 5/35 (2006.01) B65D 5/56 (2006.01)
Patent
CA 1268431
ABSTRACT OF THE DISCLOSURE A heavy-auty shipping container for flowable bulk materials comprises an outer sleeve of multi-wall corrugated fibreboard extending vertically from a bottom edge to a top edge thereof and having a polygonal cross section made of plurality of sidewall panels. An inner sleeve which is substantally co-axial with the out sleeve has a cylindrical cross section and is also made of muiti-wall corrugated fibreboard. A multiplicity of false scores is formed on the inner surface of the inner sleeve upon its being bent into a cylindrical shape. The inner sleeve contacts the outer sleeve along the center of each side panel. The upper edge of the inner sleeve is initially positioned above the upper edge of the outer sleeve by a thickness which is less than the thickness of a bottom support pad positioned under the lower edge of the inner sleeve. With one container stacked on another, the inner sleeve of the lower container is pushed downwardly to deform the outer periphery of the bottom pad and bring the upper edges of the inner and outer sleeve into coplaner positions in their post-loading condition. In this way, both the inner and outer sleeve contribute to the column strength of the container.
511856
Nugent John F.
Remaks William J.
Nugent John F.
Remaks William J.
Ridout & Maybee Llp
Weyerhaeuser Company
LandOfFree
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