Synthetic resin pen nib

Details Synthetic resin pen nib Synthetic resin pen nib

1986-11-25

1988-08-02

Bratlie, Steven A.

Coating implements with material supply

Material flows through porous tool

Wick feed from within reservoir to tool

401199, B43K 112

Patent

active

047610891

ABSTRACT:
Thermoplastic synthetic resin pen nib is disclosed, which may suitably be employed in writing instruments for fine lettering or for drawing fine lines. The pen nib is formed of thermoplastic crystalline synthetic resin, e.g. polyethylene terephthalate resin, whose molecules are in a specific mixed cystallization structure obtained by controlling the crystallization. This structure consists essentially of molecularly oriented crystals, non-oriented fine crystals dispersed and grown between the oriented crystals, and remaining amorphous regions, and provides the pen nib with highly improved physical and chemical properties.

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patent: 4597932 (1986-07-01), Kurihara et al.

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