Lead casing for pencil, and pencil thereof for writing, drawing, marking, plotting, and coloring
AssigneeSociete BIC
InventorJulien Gouerec
Life of this patent
Estimating the term…
Abstract
There is a lead casing for pencil for writing, drawing, marking, plotting, and/or coloring. The casing is made of a composition having, by weight relative to the total weight of the lead casing for pencil: a) from 50 to 95% of a mixture of polylactic acid and bio-polyethylene in a weight ratio polylactic acid/bio-polyethylene ranging from 60/40 to 90/10, and b) from 5 to 40% of mineral fillers chosen in the group consisting of shellfish shells, more specifically oyster shells, and even more specifically milled oyster shells. There is also a pencil including the lead casing of the disclosure for writing, drawing, marking, plotting, and/or coloring, as well as a method for manufacturing such a pencil.
Claims20
A lead casing for a pencil, comprising a composition including by weight relative to the total weight of the lead casing for the pencil:
- a) from 50 to 95% of a mixture of polylactic acid and bio-polyethylene in a weight ratio polylactic acid/bio-polyethylene ranging from 60/40 to 90/10, and
- b) from 5 to 40% of mineral fillers selected from the group consisting of shellfish shells.
Dependencies are inferred from the claim text.