B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 90/02 (2006.01) B67D 7/78 (2010.01) B29C 63/00 (2006.01) B29C 63/26 (2006.01) B65D 90/04 (2006.01) B65D 90/24 (2006.01) B65G 5/00 (2006.01) B67D 5/60 (2006.01)
Patent
CA 2074612
To improve the strength, resistance to leaks, and formation of tears and fissures in the inner wall of a double- wall tank, the inner wall is formed, as described in the inventor's earlier Patent 4,739,895 (Re 33,421) by a plurality of foil or sheet elements which are overlapped at the edges, and covered by a plastic, preferably epoxy layer. The sheet elements are preferably aluminum foils of from 0.15 to 0.3 mm, preferably 0.2 mm thickness. The plastic layer is reinforced by a multi-ply, preferably two-ply, glass fiber fabric, which is so woven that the layers or plies of the fabric are inter- woven or interlocked. The fabric is embedded in the plastic coating, before it is cured, for example by rolling it into the plastic coating. To assure good fitting of the inner wall against the outer wall, a vacuum is applied in the space formed by the projections or puckers of the sheet elements and the outer wall before the plastic coating has cured, and maintained until it is cured. The sheet or foil elements and the reinforced plastic will then form a laminate of high inherent stability with high bending and tensile strength, so that fissures are effectively avoided and the tank construction will be reliably tight and highly resistant to the formation of bulges and damage, for example due to dropped tools during installation, or inspection.
Adisa Entwicklungs Ag
Bachmann Werner
Kirby Eades Gale Baker
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