THREE-DIMENSIONAL SHEET STRUCTURE, METHOD FOR MAKING SAME, AND SANDWICH-TYPE STRUCTURAL MATERIAL COMPRISING SUCH STRUCTURE
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United States of America Patent
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Issued Date -
Sep 9, 2010
app pub date -
Oct 15, 2008
filing date -
Oct 17, 2007
priority date (Note) -
Abandoned
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Abstract
The invention relates to a three-dimensional sheet structure characterised in that it comprises at least: a first sheet (1) comprising a plurality of first ribs (3) on one surface thereof; and a second sheet (2) including on one surface thereof a plurality of second ribs (6) intersected by flutes (9) having a shape complementary to that of the first ribs (3) of said first sheet (1); and in that said first and second sheets (1, 2) are superimposed and attached together, each of said first ribs (3) of said first sheet (1) being received in one of said flutes (9) of said second sheet (2).
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