Advanced quality control tools for manufacturing bimodal and multimodal polyethylene resins

A system for processing polyethylene comprising:

• a testing system configured to characterize a plurality of polyethylene resins for density, melt index, and one or more resin properties comprising at least one of dynamic viscosity, gel permeation chromatography (GPC) curve profile, weight average molecular weight (Mw), or combinations thereof;
• wherein each of the plurality of polyethylene resins is a multimodal resin;
• wherein each of the plurality of polyethylene resins is characterized by a melt index that is within 30% of a target melt index;
• and wherein each of the plurality of polyethylene resins is characterized by a density that is within 2.5% of a target density;
• a computer system configured to receive the one or more resin properties from the testing system, wherein the computer system comprises at least one processor;
• wherein the at least one processor compares the one or more resin properties with corresponding target properties;
• wherein the at least one processor, when at least one of the one or more resin properties is different when compared to the corresponding target property, designates the resin as low quality resin;
• wherein the at least one processor, when the one or more resin properties are the same when compared to the corresponding target properties, designates the resin as selected polyethylene;
• and
• a shaping system configured to receive the selected polyethylene and process the selected polyethylene into a shaped article.

A system for processing polyethylene comprising:

• a testing system configured to characterize a plurality of polyethylene resins for density, melt index, and one or more resin properties comprising at least one of dynamic viscosity, gel permeation chromatography (GPC) curve profile, weight average molecular weight (Mw), or combinations thereof;
• wherein each of the plurality of polyethylene resins is a multimodal resin;
• wherein each of the plurality of polyethylene resins is characterized by a melt index that is within 30% of a target melt index;
• and wherein each of the plurality of polyethylene resins is characterized by a density that is within 2.5% of a target density;
• a computer system configured to receive the one or more resin properties from the testing system, wherein the computer system comprises at least one processor;
• wherein the at least one processor compares the one or more resin properties with corresponding target properties;
• wherein the at least one processor, when at least one of the one or more resin properties is different when compared to the corresponding target property, designates the polyethylene resin as low quality polyethylene;
• wherein the at least one processor, when the one or more resin properties are the same when compared to the corresponding target properties, designates the polyethylene resin as high quality polyethylene;
• a sorting system configured to receive quality resin designations from the computer system, wherein the sorting system physically segregates the high quality polyethylene from the low quality polyethylene;
• and
• a shaping system configured to receive the high quality polyethylene from the sorting system and process the high quality polyethylene into a shaped article.