Apparatus and method for measuring web alignment at a splice

Details Apparatus and method for measuring web alignment at a splice Apparatus and method for measuring web alignment at a splice

1997-09-24

1999-04-20

Engel, James

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156351, 156361, 226 20, B32B 3100

Patent

active

058955356

ABSTRACT:
An apparatus and method for measuring web alignment at a splice disposed between a trailing end of an expiring web and a leading end of a new web. The apparatus includes a speed monitor monitoring the moving webs. A splice sensor indicates the presence and absence of the splice while an edge sensor provides a signal indicating the position of the edge relative to a reference position. The edge signals are manipulated to provide a skew and offset value which provides a measurement of web alignment.

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"Gauge Measures Mismatch and Peaking at Welds", by Stephen S. Gordon, NASA Technical Briefs, Dec. 1996 p. 104.

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