Pencils and Methods for Their Production

Pencils and Methods for Their Production

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 cond...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BOURGEOIS YANN, GOLLIER PAUL ANDRE, MAY BRONISLAV H, RACHIDI SAID
Format: Patent
Sprache:eng
Schlagworte:
BUREAU ACCESSORIES
HAIRDRESSING OR SHAVING EQUIPMENT
HAND OR TRAVELLING ARTICLES
HUMAN NECESSITIES
IMPLEMENTS FOR WRITING OR DRAWING
MANICURING OR OTHER COSMETIC TREATMENT
PERFORMING OPERATIONS
TRANSPORTING
WRITING OR DRAWING IMPLEMENTS
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Beschreibung
Zusammenfassung: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.