Stock material or miscellaneous articles – Sheet including cover or casing – Including elements cooperating to form cells
Patent
1979-04-03
1981-10-13
Epstein, Henry F.
Stock material or miscellaneous articles
Sheet including cover or casing
Including elements cooperating to form cells
428117, B32B 312
Patent
active
042948754
ABSTRACT:
Marginal edge portions of two spaced apart flexible sheets are folded inwardly and joined to form an envelope. A plurality of laterally extending substantially rigid panels divide the envelope into a plurality of partitioned compartments. Each panel is angularly disposed relative each adjacent panel and the panels are fixed to the envelope, thereby providing a semi-rigid structure. Fibrous insulation material, especially cellulosic material such as treated ground paper, is contained in each compartment.
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Epstein Henry F.
Flickinger Don J.
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