Method of manufacturing a marking pen having a nib and an ink re

Details Method of manufacturing a marking pen having a nib and an ink re Method of manufacturing a marking pen having a nib and an ink re

1976-06-10

1978-08-08

Lanham, C. W.

Metal working

Method of mechanical manufacture

Magnetically shaping

401196, 401198, 264263, 264267, 264DIG77, 264136, 264137, B23P 1700

Patent

active

041047818

ABSTRACT:
A fibre bundle is first formed from loosely entangled fibres. A sheath is formed over the fibre bundle and one end is dipped into an urethane prepolymer to fill the spaces among fibres with the urethane prepolymer. After removal from the prepolymer it is left to stand for a period of time during which the constituents in the urethane prepolymer react to form polyurethane and generate carbon dioxide gas which forms many capillary passages for the transudation of ink. By grinding the dipped end a marking pen is obtained having a nib and an ink reservoir integral therewith.

REFERENCES:
patent: 3400998 (1968-09-01), Daugherty et al.
patent: 3432446 (1969-03-01), Coppeta
patent: 3502417 (1970-03-01), Hartmann
patent: 3864183 (1975-02-01), Hori
patent: 3881828 (1975-05-01), Jones

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