Method of introducing extended piece into laminate within hidden face of slat of roll-up door, by pressing one of upper corners of extended piece into one of extreme zones within slat

摘要

The method begins by inserting one of the upper corners of an extended piece into a laminate within one extreme zone of the groove of a slat. The other upper corner of the extended piece is positioned relative to the other extreme zone of the groove, and is pressed against the same zone.