METHOD OF MANUFACTURING TUBE LINING BAG

摘要

PURPOSE: A method of manufacturing a tube lining bag is provided to enable continuous folding of nonwoven fabric sheet and expansion of sewn part using a folding roller and an expansion jig, thereby improving productivity. CONSTITUTION: A method of manufacturing a tube lining bag is as follows. A nonwoven fabric sheet(11) of specific length is prepared and a film is attached to a side of the nonwoven fabric sheet. The nonwoven fabric sheet passes through a folding roller(361) and is folded and overlapped in the longitudinal direction so that the film is located on the outer side. The folded edge is sewn to form a tube lining bag. The tube lining bag passes through an expansion jig(330) and the edges of the sewn part are spread to face each other.