FIELD: paper industry. SUBSTANCE: insulating paper has polyaramide fibrides and a mixture of polyester fibers with the different linear density
0.12-0.22 and 0.33-0.60 tex. respectively. It can also additionally contain polyvinyl alcohol fiber. Insulating material is made of one or two layers insulating paper indicated above and polyester film layer which is joined with layer or layers of insulating paper by binder. Binder: mixture of polyester or epoxy resin at their ratio (1:5)-(5:1). Binder can contain additionally the hardener, for example, polyisocyanate. EFFECT: enhanced quality of paper. 6 cl, 2 tbl
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