Production of double wall corrugated web
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Apr 11, 2000
Grant Date -
N/A
app pub date -
Aug 11, 1998
filing date -
Aug 11, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A synchronized flute double wall corrugated paperboard web is produced in a corrugating apparatus utilizing cooperatively operated single facers to provide an intermediate single face web with corrugated media on both faces, and then combining outer liners to both corrugated media immediately prior to on entry into the double backer utilizing a glue applicator that precludes glue line disturbance. The system may also be operated to produce conventional double wall board or single wall board utilizing either of the single facers. A synchronized flute double wall board provides enhanced strength and may be run on this corrugator at the same speed as single wall board.
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