Patent ID: 6350333
Filing Date: 2002-02-26
Classification: B31D,B31F,B32B,B65H,Y10T

Abstract:
A method for laminating discrete cover sheets to a single face corrugated web which web is cut to length to form double face corrugated sheets, said method comprising the steps of:(1) feeding cover sheets in serially spaced relation from a cover sheet source into a downstream laminating nip; (2) feeding the single face web from a web source, through a cut-off knife positioned less than one sheet cut length from said downstream laminating nip, and into said nip; (3) directing each cover sheet through a variable speed positioning nip located less than one sheet cut length upstream of said laminating nip; (4) controlling the speed of the positioning nip to provide a desired position of the leading edge of the cover sheet therein with respect to the leading edge of the web in the laminating nip; (5) sensing the position of the trailing edge of the cover sheet in the positioning nip; and, (6) operating the cut-off knife in response to the sensed position of the cover sheet trailing edge to sever the web to provide a single face cut length trailing edge having a desired position with respect to said cover sheet trailing edge.