The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2025
Filed:
Sep. 21, 2020
Sabic Global Technologies B.v., Bergen op Zoom, NL;
Bernardus Aldegonda Josephus Raven, Oirsbeek, NL;
Bart Van Den Esschert, Sittard, NL;
SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom, NL;
Abstract
The present invention relates to a bag for storing bulk goods, wherein the bag comprises a multi-layer film comprising: (a) a first outer layer (c) a core layer; and (e) a second outer layer wherein the layers (a), (c) and (e) are positioned vis-à-vis each other in this order; wherein the multi-layer film comprises: •≥50.0 wt %, preferably ≥50.0 and ≤80.0 wt %, with regard to the total weight of the multi-layer film, of a polymer (A) comprising moieties derived from ethylene and moieties derived from 1-hexene, wherein the polymer (A) has: (i) a density of ≥910 and ≤930 kg/m3 as determined in accordance with ASTM D792 (2008); (ii) a melt mass-flow rate of ≥0.5 and ≤5.0 g/10 min, as determined in accordance with ASTM D1238 (2013) at a temperature of 190° C. under a load of 2.16 kg; (iii) a fraction that is eluted in analytical temperature rising elution fractionation (a-TREF) at a temperature≤30.0° C. of ≤6.0 wt %, with regard to the total weight of the polymer; and (iv) a fraction eluted in a-TREF at a temperature>94.0° C. of ≥20.0 wt %, with regard to the total weight of the polymer; and •≥20.0 and ≤50.0 wt %, preferably ≥20.0 and ≤40.0 wt %, with regard to the total weight of the multi-layer film, of a polymer (B) comprising moieties derived from ethylene and moieties derived from 1-butene, 1-hexene, or 1-octene, preferably ≥0.5 and ≤5.0 wt % of moieties derived from 1-butene, 1-hexene, or 1-octene, wherein the polymer (B) has: (v) a density of ≥945 and ≤965 kg/m3 as determined in accordance with ASTM D792 (2008); (vi) a melt mass-flow rate of ≥0.01 and ≤1.00, preferably ≥0.01 and ≤0.50, preferably ≥0.01 and ≤0.10 g/10 min, as determined in accordance with ASTM D1238 (2013) at a temperature of 190° C. under a load of 2.16 kg; and 19POLY0091-WO-PCT 19 Classification: General Business Use (vii) a melt mass-flow rate of ≥5.0 and ≤50.0, preferably ≥5.0 and ≤25.0 g/10 min, as determined in accordance with ASTM D1238 (2013) at a temperature of 190° C. under a load of 21.6 kg. [0044] Such bag may be manufactured via blow film extrusion at high speeds and high bubble stability, and such bag has a desirably high dart impact strength.