(EN) Provided herein are methods and compositions comprising a non-toxic ferromagnetic ink composition. Also provided herein are plastic objects containing a surface coating of a food-safe ferromagnetic ink composition. The coating imparts functionality to a plastic object such that the object is capable of being mechanically separated from waste stream using a commercial magnetic separator. The food-safe ink composition, which can be printed using high-speed flexographic, intaglio, offset printing or pad printing, combined with heat transfer printing or hot foil stamping consists of an ingestiblemagnetically susceptible pigment capable of rendering the printed template with magnetically active properties. The surface of the plastic object described can consist of geometric designs which increase printable surface area without significant changes in dimensions of the said object.
(ZH) 本文提供了包括无毒铁磁性油墨组合物的方法和组合物。本文还提供了包含食品安全级铁磁性油墨组合物表面涂层的塑料物体。该涂层赋予塑料物体功能性，使得能够使用商业磁选机将该物体从废品流中机械地分离。该食品安全级油墨组合物可以使用高速柔性版印刷、凹版印刷、胶印或移印，与热转印或热箔冲压结合来印刷，并由可摄取磁敏感颜料组成，该可摄取磁敏感颜料能够使印刷模板具有磁活性性质。所述的塑料物体的表面可以由几何设计组成，该几何设计增加可印刷的表面积而不会显著改变所述物体的尺寸。
