Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1983-09-09
1984-06-26
Bell, James J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428288, 428921, B32B 516
Patent
active
044566484
ABSTRACT:
Fibrous web electrets are given added properties through inclusion of a particulate material, such as a flame-retardant agent, in less than all the layers of a plural-layer film from which fibers are fibrillated, and by use of a brominated derivative of bisphenol A as the flame-retardant agent.
REFERENCES:
patent: Re30782 (1981-10-01), Van Turnhout
patent: Re31285 (1983-06-01), Van Turnhout et al.
patent: 4147636 (1979-04-01), Drake et al.
Adamse Jan W. C.
van Turnhout Jan
Bell James J.
Minnesota Mining and Manufacturing Company
Sell Donald M.
Smith James A.
Tamte Roger R.
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