Writing, drawing, decorating or cosmetic pencil

US8747003B2 · kind B2 · utility

Assignee

• J.S. STAEDTLER GMBH & CO. KG · DE

Inventors

• Andreas Thies · Tirschenreuth, DE
• Nikolas Lins · Röthenbach an der Pegnitz, DE
• Christine Delapierre-Kohl · Herzogenaurach, DE
• Johannes Herbolsheimer · Trautskirchen, DE
• Martin Jakob · Kelkheim, DE
• Harald Lang · Markt Bibart, DE
• Simone Arthen · Koblenzer Straße, DE

Key dates

• Filing date: Jul 11, 2009
• Grant date: Jun 10, 2014
• Expiry date: Jul 17, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31895
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

A pencil that includes a polymer-bonded lead, a polymerbonded wood substitute material that includes an organic filler and covers or surrounds the lead along its length, and an adhesion promoter layer disposed between the lead and the wood substitute material. The lead and the wood substitute material each have a polymer. The polymer in the lead being incompatible with the polymer in the wood substitute material so that the polymer of the lead and the polymer of the wood substitute material do not create any connection with one another. The adhesion promoter layer is connected to the polymer in the lead and to the polymer in the wood substitute material so that the adhesion promoter layer forms a connection with the polymer in the lead and with the polymer of the substitute material. The organic filler is formed by particles having a maximum particle size of 250 μm.