McHale
W2020
Round Bale Wrapper
32
6
Bale & film requirements
6.1 Bale requirements
The bales to be wrapped should be well shaped, dense and of suitable quality for
making silage. Substandard material will not produce good quality silage regardless of
how well the bale is wrapped.
Bale width - Between 1,200 mm and 1,270 mm wide
Bale height - Diameter from 1,200 mm up to 1,600 mm
6.2 Film requirements
Good quality silage depends on the use of top quality plastic film, in addition to well
shaped dense bales. Low standard film material will not produce good silage
regardless of how well the machine wraps the bale. The plastic film should be used and
stored according to the instructions of the film manufacturer.
It is recommended that a minimum of four (4) layers of film be applied to the bale. If the
material being wrapped is of a hard stemmy nature it may be necessary to apply six (6)
or eight (8) layers to ensure a good airtight package. If the stubble in a particular field
has a tendency to puncture the plastic film, it is strongly advised to wrap the bales at
the stack, where there may be more control over ground conditions.
The plastic film must be applied to the centre of the bale. If it is too low or too high adjust
the dispenser height as appropriate.
(See ‘Dispenser height adjustment’)
Only 750 mm film is to be used, unless otherwise stated.
6.2.1 Care of the film roll
The film roll should be protected from damage, moisture, and prolonged exposure to
the sun. Do not remove the protective cover until ready for use. Film damage can cause
undesired film performance and affect bale weatherability.
NOTE: Operator must check to ensure bales are wrapped correctly
The operator needs to ensure that the bale is wrapped correctly. It is
good practice to check the bales regularly after being wrapped for torn,
split or perforated plastic film.