Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1984-04-27
1986-08-19
Lesmes, George F.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
428167, 428174, 428179, 428156, 206521, 206584, 521 79, B32B 300, B32B 330
Patent
active
046069658
ABSTRACT:
The packing elements are made with flutes to reduce the amount of material and to provide for better heat transfer for expansion of the elements. The flutes are imparted during extrusion of the molten mass of thermoplastic material through a die opening by virtue of the opening having been formed with grooves.
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patent: 4169179 (1979-09-01), Bussey, Jr.
patent: 4215166 (1980-07-01), Bussey, Jr.
patent: 4269895 (1981-05-01), Borchert et al.
Lesmes George F.
Swisher Nancy A. B.
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