Coated fabric, a bag produced therefrom, a packaging machine for bags and a method for filling the bags

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United States of America Patent

PATENT NO 9902527
SERIAL NO

13879490

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Abstract

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A coated fabric (11), comprising a fabric (12) from polymer tapes (12a, 12b), wherein the fabric (12) is coated with a sealing layer (13), wherein • at least a portion of the polymer tapes (12a, 12b) have a breaking tenacity of less than 45 cN/tex, preferably 15 to 40 cN/tex and an elongation at break of more than 30%, preferably of 40 to 90%, and/or • wherein the sealing layer (13) is formed from a composition A comprising at least one ethylene/α-olefin interpolymer, and wherein the composition has a density from 0.905 to 0.930 g/cc, preferably from 0.910 to 0.930 g/cc (1 cc=1 cm3), and a melt index (12) from 3 to 20 g/10 min and a bag comprising said fabric; a packaging machine (100) for filling gusseted (220) bags (10, 200) wherein the bag walls (202) of the bags (10, 200) consist of a woven fabric (11) of polymer tapes (12a, 12b) at least in part and wherein each of the ends (203, 204) of the bag wall (202) is provided with a filling mouth (211) for filling, wherein a closing device (125) is provided which is structured such that as the filling mouth (211) is closed a welding temperature of at least 50 Kelvin higher in the region of the gussets (220) than in a center region (223) of the bag wall (202) can be generated.

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Patent Owner(s)

Patent OwnerAddress
HAVER & BOECKER OHGGERMAN OELDE OELDE NORTH RHINE-WESTPHALIA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Schütte, Thomas Lippstadt, DE 2 16
Schneider, Franz Bad Fischau-Brunn, AT 31 258
Yillan, Maria Isabel Arroyo Tarragona, ES 1 0

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