US 12,214,924 B2
Method of opening an outer bag of a pre-filled double-bag and an opening device therefore
Morten Nysted, Pandrup (DK)
Assigned to PANPAC ENGINEERING A/S, Pandrup (DK)
Appl. No. 18/547,389
Filed by PanPac Engineering A/S, Pandrup (DK)
PCT Filed Mar. 4, 2022, PCT No. PCT/EP2022/055511
§ 371(c)(1), (2) Date Aug. 22, 2023,
PCT Pub. No. WO2022/194567, PCT Pub. Date Sep. 22, 2022.
Claims priority of application No. PA202170119 (DK), filed on Mar. 16, 2021.
Prior Publication US 2024/0124182 A1, Apr. 18, 2024
Int. Cl. B65B 69/00 (2006.01); B23K 26/402 (2014.01); B65B 57/02 (2006.01); B65B 59/00 (2006.01)
CPC B65B 69/00 (2013.01) [B23K 26/402 (2013.01); B65B 57/02 (2013.01); B65B 59/003 (2019.05)] 10 Claims
OG exemplary drawing
 
1. A method for opening an outer bag of a pre-filled double-bag comprising a bag content, the pre-filled double-bag comprising the outer bag separated from an inner bag with the inner bag being arranged inside the outer bag, wherein a wall of the outer bag comprises a cellulose-based material and a wall of the inner bag comprises a plastic-based material enclosing an inner compartment comprising the bag content, the method comprises:
providing the pre-filled double-bag; and
providing an opening operation via an opening system, so as to open the outer bag leaving the inner bag substantially intact, wherein the opening system comprises a laser arrangement comprising one or more laser units emitting laser light comprising wavelengths in the range of 7-13 μm, and wherein the opening operation comprises exposing a wall area of the outer bag to the laser light, so as to at least provide a perforation of the outer bag in the wall area.