B - Operations – Transporting – 31 – B
Patent
B - Operations, Transporting
31
B
93/66
B31B 49/00 (2006.01) B31B 43/00 (2006.01)
Patent
CA 1074610
PLEATED CLOSURE CONSTRUCTION Abstract of the Disclosure A closure member constructed from a single flat blank and having an annular flange extending from a flat central portion, the outer surface of the annular flange being substantially continuous, is provided by forming a plurality of pleats running generally perpendicular to the perimeter of the flange and projecting toward the inside of the annular flange.
261775
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