Assertion: lignin | /r/ObjectUse | used as filler
Facets:
value: often
type: TEMPORAL
value: currently
type: TEMPORAL
Source sentences:
text: Lignin may be used as a filler to reduce production cost, as a reinforcement agent and a biodegradable component.
text: While currently often used as a filler or additive, lignin is rarely exploited as a raw material for chemical production.
text: Lignin offers a wide range of possible applications: it can be used as a filler or a renewable raw material for the production of bio-fuels, but also as a bio-aromatic for the production of all kinds of chemicals and materials (including resins and polymer blends).