In a large round baler including a bale-forming chamber defined in part by a bale discharge gate having opposite sidewalls extending fore-and-aft in a direction of travel of said baler and having respective inner planar surfaces spaced apart by a predetermined distance for forming bales in said chamber, lower rear and lower front bale-forming belt support rolls extending between and being rotatably supported by said opposite sidewalls of said discharge gate with said lower front roll defining a rear side of a crop inlet leading to said chamber, a plurality of side-by-side disposed bale-forming belts having respective upright runs joined to respective fore-and-aft extending runs at locations engaging said lower rear roll, with said fore-and-aft extending runs also engaging said lower front support roll, outer ones of said fore-and-aft extending runs being respectively spaced from said opposite side walls, said baler being equipped with a net wrapping mechanism including a wrap material guide surface underlying said lower rear roll and said fore-and-aft extending belt runs and being in a plane extending below lower edges of said opposite sidewalls, the wrapping mechanism being operable for introducing a length of net wrap material into said crop inlet along a path defined between said wrap material guide surface and said fore-and-aft extending runs of said belts whereby the net material is captured between the bale-forming belts and a formed bale, each of said lower rear and lower front support rolls having opposite end portions extending outwardly beyond said opposite sidewalls of said discharge gate and defined by respective net wrap material spreader devices, and said wrapping mechanism being operable for dispensing net having a width greater than said predetermined width, the improvement comprising:
- said lower front roll having a cylindrical center portion between said spreader devices at the opposite ends of said lower front roll;
- and at least a pair of right- and left-hand spiral members respectively fixed to, and extending inwardly along said cylindrical center portion from said net wrap material spreader devices, whereby said spiral members act to move crop material away from said spreader devices and to shake said fore-and-aft extending belt runs so as to cause crop material carried by said runs to fall through gaps between adjacent ones of said fore-and-aft extending belt runs.