Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1978-10-04
1980-12-30
Pianalto, Bernard D.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
156239, 156249, 427 48, 427131, 428202, B32B 300
Patent
active
042424003
ABSTRACT:
Production of a magnetically and visibly detectable two-layer structure by coating a first layer including a binder with a visibly distinct magnetic material in a dispersion comprising a partial solvent for the binder and selectively applying a magnetic field to cause the magnetic material to migrate into the first layer.
REFERENCES:
patent: 3111422 (1963-11-01), Newman et al.
patent: 4081132 (1978-03-01), Pearce
Claes Paul E.
Smith Andrew L.
E M I Limited
Pianalto Bernard D.
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