Process for the manufacture of multi-ply panel boards preferably for floors
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 5, 1992
Grant Date -
N/A
app pub date -
Mar 14, 1990
filing date -
Mar 17, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Multi-ply floor panel boards are cut from a sheet composed of individual, glued plies. The plies of two such sheets are now placed together underside to underside and glued together. Then double board blanks in the size of the panel boards to be manufactured are cut from the composite sheet formed in this way. After hardening of the glue, these double board blanks are halved along their middle plane, so that two panel boards completely free of warping are formed. The plies adjoining the middle plane of the composite sheet preferably form a continuous middle ply. This can be provided on both sides with incisions reaching to the middle plane, so that, after halving of the double board blanks, each panel board has a bottom ply with continuous parting cuts. The grooves and tongues that are sometimes necessary along the edges of the panel boards are already made in the edges of the double board blanks in one working cycle for each two panel boards.
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Cited Art Landscape
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