Anti-adhesion between sections in fdm-printed object

Abstract

The invention provides a method for producing a 3D item (1) by means of fused deposition modelling, wherein: (A) the method comprises layer-wise depositing 3D printable material (201) to provide the 3D item (1) comprising a plurality of layers (322) of 3D printed material (202): (B) the 3D printable material (201) comprises (i) first 3D printable material (1201) comprising a fluoropolymer (1403) in a first outer region (1270) (of the first 3D printable material (1201)) enclosing a first inner region (of the first 3D printable material (1201)), and (ii) second 3D printable material (2201) free from a fluoropolymer (1403) in a second outer region (2270) (of the second 3D printable material (2201)) enclosing a second inner region (of the second 3D printable material (2201)); and (C) (a) in one or more first sections (280) of two adjacent layers (322) at least one of the layers (322) comprises first 3D printed material (1202) comprising the fluoropolymer (1403) in the first outer region (1270) (of the 3D printed material (202)), and (b) in one or more second sections (290) of two adjacent layers (322) the adjacent layers (322) both comprise second 3D printed material (2202) free from the fluoropolymer (1403) in the second outer regions (2270) (of the 3D printed material (202)).

Dependencies are inferred from the claim text.