Stack progressive pressing for making shaped articles
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United States of America Patent
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-
Oct 9, 2012
Grant Date -
Dec 2, 2010
app pub date -
May 5, 2010
filing date -
May 29, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for forming shaped articles (28′) includes preparing a stack (26) having at least an adjacent set (27) of preformed material (28) and forming mold (30), where the preformed material (28) has an edge portion (34) that extends beyond a periphery of the forming mold (30), and the forming mold (30) has an external surface (32) with a desired surface profile of a shaped article. The stack (28) is heated. The stack (28) is advanced through a constriction (56) that has an internal surface configured to fold the edge portion (34) of the preformed material (28) into contact with the external surface (32) of the forming mold (30) as the edge portion (34) passes through the constriction (56), thereby forming a shaped article (28′) from the preformed material (28). The shaped article (28′) is then separated from the forming mold (30).
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Cited Art Landscape
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