Manufacturing method of a duvet cover provided with a sleeping bag

摘要

The method involves folding a panel (P3) on another panel (P2) around a transverse axis and a third panel (P1) on the previously superposed panels around another axis. The panels are secured in definitive manner by rectilinear sewing lines along longitudinal edges forming overlapped bags. One of the bags accessible through opening is completely turned, so that upper face (1b) of the third panel and lower face of the latter panel form internal faces of duvet bag. The other bag is completely turned so as to close and block a duvet in the respective bag and access a sleeping bag (EG). An independent claim is also included for a protection cover for duvet.