公开(公告)号：US20220185529A1

公开(公告)日：2022-06-16

申请号：US17433166

申请日：2018-12-11

申请人： Esbottle Oy

发明人： Kaj PELAMO

IPC分类号： B65D3/02 ,  B65D3/22 ,  B65D23/02 ,  B67C7/00 ,  B29D22/00 ,  B31B50/34 ,  B31B50/74 ,  B31B50/64 ,  B31B50/26 ,  B31B50/84

摘要： A method for manufacturing a paperboard bottle and spiral-wound paperboard bottle. The bottle has a tubular body portion, a shoulder and neck portion having a circular cross-section narrowing from the body portion to a circular mouth. The paperboard bottle is a liquid packaging board having thermoplastic polymer coating on both sides. The method includes cutting a planar elongated blank from a packaging board sheet. Protecting exposed cut raw edge of the first longitudinal edge against absorption of liquid. Securing the first end of the blank to a rotatable mandrel having a rotation axis (x) and an outer shape corresponding to the shape of the bottle. Rotating the mandrel to wind the blank spirally onto the mandrel, so that the longitudinal edges overlap applying heat-sealing energy and pressure, onto the overlapping longitudinal edges to form a bottle with hermetically sealed spiral seam and removing the mandrel from inside the bottle.