Procedure for the production of magnetic plastic laminate

Details Procedure for the production of magnetic plastic laminate Procedure for the production of magnetic plastic laminate

1988-03-30

1990-03-13

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 60, 264 67, 264132, 264136, 264258, 264319, 264DIG58, 428329, 428530, 428900, B29C 4320, B29C 4112, B29C 4122

Patent

active

049081640

ABSTRACT:
Procedure for the production of magnetic plastic laminate in which at least one of the paper fiber sheets impregnated with phenolic and melaminic resins, is first of all spread, using the silk screen process, with a cloth with a weave of from 9 to 24 threads per cm.sup.2, with a ferrous powder based paste with a percentage comprised of between 55%-80% and a binder with a percentage comprised of between 45%-20%; after drying the percentage of ferrous powders is comprised of between 75%-80%, the thickness of the paste of between 0.5 and 2.0 mm and the plastic laminate thus obtained is permanently magnetized through an electric charge thanks to the presence of the ferrous powders inside it.

REFERENCES:
patent: 2959832 (1960-11-01), Baermann
patent: 3333333 (1967-08-01), Noack
patent: 3602986 (1971-09-01), Conwicke
patent: 3717578 (1973-02-01), Slijkerman
patent: 3755515 (1973-08-01), Cochardt
patent: 3933536 (1976-01-01), Doser
patent: 4354993 (1982-10-01), Kools
patent: 4431979 (1984-02-01), Stijntjes
patent: 4707313 (1987-11-01), Houle

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