▎ 摘　　要

NOVELTY - Additive-manufacture feedstock comprises an ethylene polymer blend composition having an ethylene polymer having a melt flow index of from 0.1-150 g/10 minute (190℃/2.16 kg), and component blended in the ethylene polymer selected from a polyolefin elastomer, an ethylene-vinyl ester polymer, a fiber, a nucleator or clarifier, or a polypropylene polymer. The ethylene polymer blend composition has an ethylene content of 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 20%, as compared to a printed article made from the same ethylene polymer without the blended component in the additive-manufacture feedstock. USE - Additive-manufacture feedstock used for filament, powder, distribution of pellets, for three-dimensional printing and for additive manufacturing (all claimed). ADVANTAGE - The additive-manufacture feedstock when in the form of a printed article, exhibits an improved printability characterized by an improved warpage-resistance rating. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: 1. a method of three-dimensional printing, which involves supplying the additive-manufacture feedstock to a printing apparatus and forming a hot-melt of the additive-manufacture feedstock, depositing the hot-melt of the additive-manufacture feedstock from the printing apparatus on a substrate to form a first deposited printing layer, repeating previous steps to deposit a second layer on the first printing layer, and depositing at least one further printing layer on the second printing layer; and 2. a method of additive manufacturing, which involves depositing a layer of the additive-manufacture feedstock to a printing apparatus, irradiating the additive-manufacture feedstock at a temperature range that sinters the additive-manufacture feedstock and causes at least a portion of the additive-manufacture feedstock to fuse and form a first printing layer, and forming at least one or more further printing layer(s) on second printing layer.