Sheet-material packaging bag

A bag comprising:

• generally congruent front and back panels of plastic film having upper and lower edges and a pair of side edges extending vertically between the upper and lower edges;
• first and second gussets of plastic film each extending between one of the side edges of one of the panels and the respective side edge of the other panel, the first gusset movable between a folded-in position tucked between the panels and a folded-out position projecting out from between the panels;
• a weld extending between and sealing together the upper edges;
• a reclosable fastener comprising a pair of matable strips secured to inner surfaces of the panels and extending horizontally below the weld;
• formations facilitating removal of a part of the front and back panels above the fastener at the first gusset, whereby when the part is removed the first gusset can be moved from the folded-in to the folded-out position in which it forms a spout and fluent contents of the bag can be poured out of the spout;
• and
• a handle secured to the second gusset below the slide fastener and above the lower edges.