Ethylene polymer blend composition for additive-manufacture feedstock

An additive-manufacture feedstock, comprising

• an ethylene polymer blend composition having:
• an ethylene polymer having a melt flow index of from 0.1 to 150 g/10 min (190° C./2.16 kg), measured according to ASTM D 1238, and
• at least one component blended in the ethylene polymer selected from the group consisting of:
• a polyolefin elastomer,
• an ethylene-vinyl ester polymer,
• a fiber,
• a nucleator or clarifier,
• a polypropylene polymer, and
• combinations thereof;
• wherein:
• the ethylene polymer blend composition has an ethylene content of at least 50 wt %, and
• the additive-manufacture feedstock, when in the form of a printed article, exhibits an improved printability characterized by an improved warpage-resistance rating of at least 20%, as compared to a printed article made from the same ethylene polymer without the blended component in the additive-manufacture feedstock.