Method and apparatus for splicing a standby web to a running web

• Main Authors: BESEL; ROLAND LEROY, SHEARON; MICHAEL HILLAS
• Format: Patent
• Language: English
• Published: 24.06.1975
• Subjects: CONVEYING; HANDLING THIN OR FILAMENTARY MATERIAL; HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES; PACKING; PERFORMING OPERATIONS; STORING; TRANSPORTING

Disclosed herein is a method for splicing the leading end of a standby web to a running expiring web, rotatably supported on an unwind means, comprising the steps of: providing a running web storage means for maintaining, at a substantially constant value, the speed at which the running web leaves the web storage means when the speed of the running web entering the web storage means changes; restraining the running web with a web guide means; applying a braking force to the web guide means so that the tension in the running web between the web guide means and the unwind means is almost zero; sensing the end of the running web with a web tail sensing means, after it has become disengaged from the unwind means; stopping the running web by grasping the running web with a clamp means, after the tail end of the running web has passed through the web tail sensing means; effecting a splice between the leading edge of the standby web and the running web, while both webs are stationary; and severing the running web. An apparatus for accomplishing the above method is also disclosed.