	US 11,865,855 B2
	Lead casing for pencil, and pencil thereof for writing, drawing, marking, plotting, and coloring
Julien Gouerec, Clichy (FR)
Assigned to SOCIÉTÉ BIC, Clichy (FR)
Appl. No. 17/415,541
Filed by SOCIÉTÉ BIC, Clichy (FR)
PCT Filed Dec. 17, 2019, PCT No. PCT/EP2019/085561 § 371(c)(1), (2) Date Jun. 17, 2021, PCT Pub. No. WO2020/127203, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 18306713 (EP), filed on Dec. 18, 2018.
Prior Publication US 2022/0055396 A1, Feb. 24, 2022
Int. Cl. B43K 19/02 (2006.01); B29C 48/06 (2019.01); B43K 19/14 (2006.01); B43K 19/16 (2006.01); B29K 67/00 (2006.01); B29C 48/68 (2019.01); B29C 48/00 (2019.01)

CPC B43K 19/02 (2013.01) [B29C 48/022 (2019.02); B29C 48/06 (2019.02); B29C 48/681 (2019.02); B43K 19/14 (2013.01); B43K 19/16 (2013.01); B29K 2067/046 (2013.01)]

13 Claims

1. A lead casing for a pencil, consisting of, 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 polybutylene adipate terephthalate in a weight ratio polylactic acid/polybutylene adipate terephthalate ranging from 60/40 to 90/10, and

b) from 5 to 40% of mineral fillers selected from the group consisting of shellfish shells and oyster shells.