LEAD FOR PENCIL FOR WRITING, DRAWING, MARKING, PLOTTING AND/OR COLORING

    公开(公告)号:US20210206989A1

    公开(公告)日:2021-07-08

    申请号:US17130322

    申请日:2020-12-22

    申请人: Société BIC

    发明人: Julien GOUEREC

    IPC分类号: C09D13/00

    摘要: There is a polymer-based extrudable non-calcined pencil lead having a lamellar mineral filler having a lamellarity index greater than 2.8, advantageously greater than 3.5, in particular greater than 4. There is also a pencil having such a lead and the use of a lamellar mineral filler having a lamellarity index greater than 2.8 to improve the flexural resistance and/or the smoothness, and/or the vividness of a polymer-based extrudable non-calcined pencil lead.

    BODY FOR A WRITING, TRACING, DRAWING OR COLORING PENCIL

    公开(公告)号:US20210394549A1

    公开(公告)日:2021-12-23

    申请号:US17274325

    申请日:2019-09-06

    申请人: Société BIC

    发明人: Julien GOUEREC

    IPC分类号: B43K19/14 C08L67/04

    摘要: A body for a writing, tracing, drawing or coloring pencil has a composition that has, by weight, with respect to a total weight of the body between 50% and 95% of a mixture of polylactic acid and polybutylene succinate in a polylactic acid/polybutylene succinate ratio by weight of between 90/10 and 60/40 and between 5% and 50% of filler that includes an organic filler, such as wood fibers. A writing, tracing, drawing or coloring pencil includes such a body.

    IMPROVED COLORING PENCIL LEAD FOR SYNTHETIC PENCIL BASED ON BIOPOLYMERS BLENDS

    公开(公告)号:US20230373236A1

    公开(公告)日:2023-11-23

    申请号:US18247207

    申请日:2021-09-24

    申请人: SOCIÉTÉ BIC

    发明人: Julien GOUEREC

    摘要: The present invention relates to a polymer-based extendable lead or refill for writing, drawing and/or painting tools comprising a binder comprising a mixture of polylactide with at least one polymer having a flexural modulus inferior to the flexural modulus of polylactide and at least one filler. It also relates to writing, drawing and/or painting tool, advantageously a pencil, comprising lead or a refill according to the invention and to the use of a binder comprising a mixture of polylactide with at least one polymer having a flexural modulus inferior to the flexural modulus of polylactide according to the invention to improve the vividness of polymer-based extrudable lead or refill for writing, drawing and/or painting tools.