Slide fastener for flexible bulk container

Claim 1

In a flexible bulk container including a bag portion having a top wall, a bottom wall and an encircling side wall connected to said top and bottom walls defining the outer perimeter of said bag portion and further including a filling spout secured to said top wall for filling said bag portion and a discharge spout secured to said bottom wall for discharging material from said bag portion, each of said spouts including a cord attached thereto intermediate the ends of said cord and which is adapted to be tightened around its respective spout for closing the same, the improvement comprising a pocket formed in the wall around each spout, each spout being adapted to be folded and inserted into its respective pocket; each pocket being comprised of a plurality of flaps which are adapted to be moved between open and closed positions, a pull cord for holding said flaps in said closed position with the respective spout inserted within said pocket; a fastener for holding each of said cords in a tightened position after the cord has been tightened around its associated spout for closing the same or for holding the cord in a position wherein it closes its associated flaps; each of said fasteners being comprised of an element having an aperture therein through which both ends of one of said cords are passed, the inner diameter of said aperture being such that it frictionally engages the cord so that said element can be manually slid across its respective cord ends between a closed position and an open position, said element tending to remain in any position in which it is placed; the fastener associated with the discharge spout having an additional cord attached thereto so that said fastener can be operated and slid into an open position from a remote location.