Process for producing electroconductive films

Details Process for producing electroconductive films Process for producing electroconductive films

1985-01-24

1987-02-24

Chin, Peter

Paper making and fiber liberation

Processes and products

Electrical or magnetic product characteristic

162146, 162206, 162207, D21H 518

Patent

active

046455663

ABSTRACT:
A process for producing an electroconductive film having a volume resistivity of fiber oriented direction of not more than 1.times.10.sup.8 ohm cm comprising mixing from 94.5% to 40% volume of a thermoplastic synthetic pulp with from 5% to 30% by volume of thermoplastic composite fibers comprising of a first component having a lower melting point than that of said thermoplastic synthetic pulp and a second component having a higher melting point than that of said thermoplastic synthetic pulp, and from 0.5% to 30% by volume of electroconductive fibers to prepare a paper stock; forming a wet web from the paper stock; heating and drying said wet web at a specific first temperature to melt the first component of the composite fibers, thereby forming a base paper; and thereafter heating said base paper under pressure at a specific second temperature to melt the thermoplastic synthetic pulp, thereby forming a film having dispersed said second component and said electroconductive fibers therein.

REFERENCES:
patent: 3265557 (1966-08-01), De Fries et al.
patent: 3957573 (1976-05-01), Miyamoto et al.

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