Pencil, Shaft and Process for Production Thereof
AssigneeStaedtler SE
InventorsAndreas Thies, Martin Jakob, Johannes Herbolsheimer
Life of this patent
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Abstract
Pencil (1) having a shaft (3), wherein the shaft (3) comprises a shaft base material having a base formulation, wherein the base formulation comprises 50% to 80% by weight of PLA, PLA copolymer and/or PLA blend, 20% to 50% by weight of further polymers, plasticizers, waxes/lubricants, further additives such as adhesion promoters, stabilizers etc., colorants, in particular pigments, organic and/or inorganic fillers as shaft fillers, wherein the shaft base material is foamed and/or comprises pores.
Claims13
A pencil,
- with a shaft,
- wherein the shaft has a shaft base material with a base formulation,
- wherein the base formulation comprises
- 50 to 80% by weight
- PLA, PLA copolymer and/or PLA blend
- 20 to 50% by weight
- further polymers, plasticizers, waxes/
- lubricants, other additives such as adhesion
- promoters, stabilizers, etc, colorants, in
- particular pigments, organic and/or inorganic
- fillers, as shaft fillers,
- wherein the shaft base material is foamed and/or contains pores.
A shaft for writing implements, painting implements, drawing implements and/or cosmetic pencils, wherein the shaft has a shaft base material with a base formulation,
- wherein the base formulation comprises
- 50 to 80% by weight
- PLA, PLA copolymer and/or PLA blend
- 20 to 50% by weight
- further polymers, plasticizers, waxes/
- lubricants, other additives such as
- adhesion promoters, stabilizers, etc,
- colorants, in particular pigments,
- organic and/or inorganic fillers,
- as shaft fillers,
- wherein the shaft base material is foamed and/or contains pores.
Dependencies are inferred from the claim text.