Method and apparatus for scoring and folding envelopes
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 12, 1985
Grant Date -
N/A
app pub date -
Nov 8, 1982
filing date -
Nov 8, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Envelope blanks are scored and folded by pressing the flat blanks through a series of scoring and folding rolls. The rolls include vacuum rolls which invert the envelope blanks during the scoring operation. The blanks are scored laterally and as they pass over the outer surface of one of the vacuum rolls they are scored longitudinally. During the longitudinal scoring operation, the envelopes are curvilinear due to their being drawn down onto one of the vacuum rolls. After the longitudinal scoring operation, the blanks are inverted by being folded along the transverse score. The inverted, folded blanks are then moved along by a pair of cooperating vacuum rolls to a gumming station. After being gummed, the blanks are folded along their longitudinal scores with the folded flaps being secured in place by the gum.
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Family
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Cited Art Landscape
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