Title:
PENCILS AND METHODS FOR THEIR PRODUCTION
Document Type and Number:
WIPO Patent Application WO2005102731
Kind Code:
A3
Abstract:
Pencils having a core within a barrel, the barrel being formed from a blend of at least two transparent polymers which are incompatible and form separate phases within the blend, the polymers having refractive indices which differ by not more than 0.02 when measured under substantially the same conditions. Blends for use in producing the barrels of such pencils have shown good sharpenability combined with high transparency. The latter enables the core of the pencils to be clearly visible through their barrels.
Inventors:
BOURGEOIS YANN (BE)
MAY BRONISLAV HENRI (BE)
RACHIDI SAID (BE)
GOLLIER PAUL-ANDRE (BE)
MAY BRONISLAV HENRI (BE)
RACHIDI SAID (BE)
GOLLIER PAUL-ANDRE (BE)
Application Number:
PCT/EP2005/004259
Publication Date:
April 06, 2006
Filing Date:
April 19, 2005
Export Citation:
Assignee:
CERTECH ASBL (BE)
BOURGEOIS YANN (BE)
MAY BRONISLAV HENRI (BE)
RACHIDI SAID (BE)
GOLLIER PAUL-ANDRE (BE)
BOURGEOIS YANN (BE)
MAY BRONISLAV HENRI (BE)
RACHIDI SAID (BE)
GOLLIER PAUL-ANDRE (BE)
International Classes:
A45D40/16; A45D40/20; B43K19/00; B43K19/14; B43K19/16; B43K; (IPC1-7): B43K19/00; A45D40/20; B43K19/14
Foreign References:
| US20010048839A1 | 2001-12-06 | |||
| US20040071491A1 | 2004-04-15 | |||
| DE10208817A1 | 2003-07-10 | |||
| US4063828A | 1977-12-20 |
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