US 11,787,615 B2
Bag and film tube for producing such a bag
Waldemar Repp, Hagen (DE); Reinhard Bergmann, Wallenhorst (DE); Frank Heermann, Lotte (DE); Carsten Michel, Hagen (DE); Christoph Reinker, Lengerich (DE); Uwe Wiegand, Hörstel (DE); Rolf zum Dohme, Lengerich (DE); and Jürgen Sundermann, Lengerich (DE)
Assigned to Bischof + Klein SE & Co. KG, Lengerich (DE)
Appl. No. 17/298,034
Filed by Bischof + Klein SE & Co. KG, Lengerich (DE)
PCT Filed Dec. 3, 2019, PCT No. PCT/EP2019/083529
§ 371(c)(1), (2) Date May 28, 2021,
PCT Pub. No. WO2020/115062, PCT Pub. Date Jun. 11, 2020.
Claims priority of application No. 20 2018 106 868.7 (DE), filed on Dec. 3, 2018.
Prior Publication US 2022/0097943 A1, Mar. 31, 2022
Int. Cl. B65D 75/62 (2006.01); B65D 75/58 (2006.01); B65D 75/12 (2006.01)
CPC B65D 75/5844 (2013.01) [B65D 75/12 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A bag comprising:
a lower bottom, a circumferential wall, and an upper filling space closure facing away from the lower bottom, wherein the lower bottom, the circumferential wall, and the upper filling space closure define a filling space of the bag for bulk material;
a longitudinal seam extending transversely to the upper filling space closure;
at least one tear-open strip for opening an opening field of the bag, wherein the at least one tear-open strip is delimited by an upper weakening line and a lower weakening line, wherein the upper and the lower weakening lines extend parallel to the upper filling space closure, and wherein the upper weakening line is positioned between the upper filling space closure and the lower weakening line;
wherein the upper and the lower weakening lines begin in a region of the longitudinal seam;
wherein the longitudinal seam is weaker in a region of the longitudinal seam between the upper and the lower weakening lines than in a region above the upper weakening line and in a region below the lower weakening line;
wherein the bag is a side gusset bag and the circumferential wall comprises a front side and a rear side connected to each other by a first sidewall and a second sidewall, wherein the first and second sidewalls are formed by side gussets, respectively, and wherein the upper and the lower weakening lines extend transversely across at least 80% of a width of the front side or a width of the rear side and do not extend into the side gussets;
wherein a distance of the upper weakening line in relation to a material chamfer of the bag amounts to 30 to 65 mm, wherein a distance of the lower weakening line in relation to the upper weakening line amounts to 15 to 25 mm, and wherein the upper and the lower weakening lines are arranged centered either at the front side or at the rear side and extend across 15% to 35% of a circumference of the bag.