| 摘要 |
A flexible and collapsible bulk bag having an upright orientation in use with top and bottom end access openings to the exterior of the bag through which a flexible and collapsible liner is received in the bag, the liner also having top and bottom access openings through which the bulk contents are respectively entered and discharged. When the bag is expanded and filled it has a pair of spaced apart and generally conical ends formed by four triangular portions interconnected by four generally rectangular side walls, with the ends convergently tapering toward their associated access opening. The bag when empty can be collapsed into a compact, flat configuration having a pair of overlying front and rear panels with a pair of folded gusseted side panels received therebetween. Alternatively the liner has a rigid discharge outlet spout and a protective exterior flap spans beneath the spout outlet closure to serve as an openable, flexible protective barrier for the same. When the bag is full and ready to be discharged, the bag and liner are suspended vertically by hoisting from the bag hanger straps. A pair of squeeze nip rollers may then be applied across the front and rear panels and then pulled downwardly therealong to thereby squeeze any remaining contents out the liner discharge opening. When the discharge outlets of the liner and bag are made of flexible and compressible material, the nip roller squeegee stroke continues therealong the material of these outlets to also empty any contents remaining therein.
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