▎ 摘　　要

NOVELTY - Filament comprises 75-99.9% polylactic acid, 0.1-25% p olytetrafluoroethylene, and 0.1-25% graphite. The filament further comprises 0.5-2% nanosilica, and 0.5-2% graphene. USE - The filament is useful in three dimensional printers (claimed), which is used for manufacturing additive. ADVANTAGE - The filament has self-lubricating properties that can work comfortably in frictional environments and extend the life of the product. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for producing filament. DESCRIPTION OF DRAWING(S) - The figure shows Schematic representation of the invention composite filament production method. 1Doser 2Extruder 3Cooling pool 4Attractive 5Wrapper