A lubricant sheet for making a hole used for a printed circuit board,
comprising an organic substance layer having a thickness of 0.02 to 3.0 mm
and formed of a mixture (a) or a mixture (b) and a metal foil having a
thickness of 0.05 to 0.5 mm,
said organic substance layer being formed on one surface of said metal
foil,
said mixture (a) being a mixture containing polyether ester (I), a solid
water-soluble lubricant (II) and polyethylene glycol (III) having a number
average molecular weight of 200 to 600, and
said mixture (b) being a mixture containing said polyether ester (I), said
solid water-soluble lubricant (II) and a liquid water-soluble lubricant
(IV), and a method of making a hole which uses the lubricant sheet.
