Drain material holding apparatus for board drain process.

摘要

Disclosed is a drain material holding apparatus for use to carry out a board drain method, in which a pushing rod is inserted into a hollow mandrel provided with an openable/closable cover attached on its lower end so that a drain material can be grasped between the openable/closable cover and an end surface of the pushing rod when the openable/closable cover is rotated in the direction to close a drain material insertion through hole formed in the mandrel.