Method of partially engraving foamed plastic extrusions and extrusions so engraved
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United States of America Patent
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Issued Date -
Apr 6, 2006
app pub date -
Feb 14, 2005
filing date -
Sep 23, 2004
priority date (Note) -
Abandoned
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Abstract
A method of only partially engraving foamed plastic extrusions and foamed plastic extrusions so engraved, the method comprising formulating the plastic to leave residual foaming agents after extrusion and contacting one or both sides of the extrusion with an embossed engraving roller or rollers controlled to limit penetration and contact of the foamed plastic with the outer portions only of the roller embossment to activate residual foaming agents to foam the plastic around such penetrating portions.
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