Abstract: A wire and cable insulation includes a wire or a cable having an inner layer and an outer layer of insulation. The outer layer includes an uncoated magnesium hydroxide. The inner layer and the outer layer each have less than 1 percentage by weight of halogen.

Abstract: Replacing silicone paper release sheet of known adhesive-backed roll-feed 50 micron polyester curable marker product with 90+ (pref. 100) micron plastics release sheet 12 enables A4 sheets to be printed in sheet-fed printers with reduced curling or multi-sheet feeding and enables release sheet to be made from economically desirable non-stress-relieved plastics, whereas thinner plastics release sheets (and the polyester marker backing 10) need stress relief to survive heat-curing of the printed material without unacceptable distortion. Preferred versions have spacing means 14, preferably a strip of adhesive tape, projecting from the surface of the release sheet 12 facing away from the printable marker 10 to facilitate separation of sheets from a stack thereof by maintaining air gaps between adjacent sheets in the stack.