An entry board for use in drilling small holes in boards: the entry board comprises
a lubricant layer of a mixture of a polyethylene glycol having an average molecular
weight of at least 3000 to less than 10000, a polyethylene glycol having an average
molecular weight of at least 10000 and trimethylolpropane formed over at least
one surface of an aluminum base board with an undercoat layer of a partially saponified
product of polyvinyl acetate provided between the lubricant layer and the base
board. The partially saponified polyvinyl acetate has a degree of saponified 15
to 70 mole % and has an average molecular weight of 9000 to 50000. The adhesion
of the lubricant layer to the base board is excellent, and the lubricant layer
prevents cracking.
