| 摘要 |
A web splicing method and apparatus to splice a running web (w) to the web on a ready roll (28) so as to avoid web speed and position mis-matches due to roll eccentricity and roll end wobble. After an adhesive splicing medium (T) is applied to the leading end of the web on the ready roll, that roll is accelerated to a selected nominal splicing speed. The roll surface speed and end edge position are then measured at least at a location at or near the splicing medium thereon. The speed and edge position of the running web are also measured. During successive revolutions of the roll, the running web speed and the roll surface speed in the vicinity of the splicing medium are compared. Also, the edge positions of the running web (26) and the roll end at or near the location of the splicing medium are compared. |
