Machine and process for making a sheet of single face corrugated cardboard
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 25, 1997
Grant Date -
N/A
app pub date -
May 15, 1995
filing date -
Jul 20, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A machine for manufacturing a sheet of corrugated board by gluing a fluted sheet of board onto a liner sheet of board includes: a fluted cylinder, a central fluted cylinder equipped with an assembly for applying the fluted sheet against its periphery, a smooth cylinder for bringing the liner sheet into contact with the crests of the flutes of the fluted sheet, and a motorized smooth heating cylinder situated downstream of a path of the corrugated board and entirely at distance from the first three cylinders; an assembly for controlling and adjusting the rotational speed of the motorized smooth heating cylinder; and an assembly for adjusting and maintaining during operation the pressure of the liner sheet on the flutes of the fluted sheet over a line of contact below 3 kg/cm. The fourth cylinder presses the fluted sheet onto the central fluted cylinder over an circular arc corresponding to a subtended angle between an order of 30.degree. and an order of 80.degree.. The fourth cylinder contacts with the back of the liner sheet over an circular arc corresponding to a subtended angle between an order of 90.degree. and an order of 200.degree..
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Cited Art Landscape
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