| 摘要 |
PURPOSE:To eliminate stickiness, to easily handle and to improve drilling properties by forming aqueous soluble lubricant of polyoxyethylenepropylene block polymer. CONSTITUTION:Polyoxyethylenepropylene block polymer of aqueous soluble lubricant is generally obtained by addition polymerizing propylene oxide, and further addition polymerizing ethylene oxide, and represented by a formula. As a method of disposing the lubricant in this laminate, the lubricant is merely suitably heated, warmed or formed in a coating layer having 0.01-3mm of thickness as aqueous solution. Paper, plastic nonwoven fabric, porous metal sheet, etc., is suitably heated or warmed or disposed as a sheet having 0.01-3mm of thickness immersed with aqueous soluble lubricant as aqueous solution. Further, at least one side surface of plastic or metal foil is suitably heated, warmed or sheets coated with aqueous soluble lubricant layer having 0.01-3mm of thickness as aqueous solution are superposed on both coating sides. |
