A BALER

A feeding system for feeding wrapping material (26) into a bale chamber (15) of a fixed chamber roller baler (1) for circumferentially wrapping a round bale therein whereby the wrapping material (26) is fed from a roll (25) thereof through primary feed and pinch rollers (30, 31). The wrapping material (26) is drawn from the roll (25) by the primary feed and pinch rollers (30, 31) through a tensioning system (50) comprising spaced apart parallel non-rotatable first and second tensioning shafts (51, 53) of circular transverse cross-section. The first tensioning shaft (51) is carried on a pair of carrier members (55) pivotal about a pivot axis (57) defined by the second tensioning shaft (53) for adjusting the degree of tension induced in the wrapping material by the tensioning system (50). By pivoting the first tensioning shaft (51) in the direction of the arrow C about the pivot axis (57), the angular distances around the first and second tensioning shafts (51, 53) engaged by the net wrapping material (26) increases, thereby increasing the tension induced in the net wrapping material (26). A secondary feed roller (64) engaging an outer surface (66) of the roll (25) of wrapping material (26) rotates the roll (25) to simultaneously dispense wrapping material (26) therefrom when the primary feed roller (30) is operating to feed the wrapping material (26) into the bale chamber (15) to reduce tension induced in the wrapping material (26) by the tensioning system (50).