Lubricated valve bag and method of lubricating valve spout

摘要

A valve bag with an opening in one corner adapted to receive a spout for filling the bag, the opening having an insert therein, which insert has a light coating of a lubricant on its inner surface, so that when the bag is slipped on the filling spout some of the lubricant will be transferred to the spout and lubricate the spout for the next bag to be slipped on the spout.