A valve bag is provided having a self-closing feature to preclude sifting losses after filling, but before the bag is fully sealed, while enabling the facilitated final secure closure of the bag.
申请公布号
US5806982(A)
申请公布日期
1998.09.15
申请号
US19960644377
申请日期
1996.05.10
申请人
STONE CONTAINER CORPORATION
发明人
KELLEY, ROBERT G.;GILES, DON G.;WADIUM, CHRISTOPHER S.;AVILA, MICHAEL R.;KENDALL, ROBERT F.;MYERS, THOMAS L.;BELSER, MARK D.;FULLER, JOHN P.;ABAR, MICHAEL D.
