McHale Orbital - 6 Bale & Film Requirements; Bale Requirements; Film Requirements

McHale Orbital Round Bale Wrapper
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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 1,100 mm up to 1,450 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 or stemmy nature it may be necessary to apply six
(6) or eight (8) layers to ensure a good airtight package. Only 750 mm film is to be used,
unless otherwise stated.
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.
6.2.1 Determining the number of wrapping ring rotations
To determine the number of wrapping ring rotations required to cover a bale, carry out
the following procedure:
1. Using manual operation, from the control box, manually count the number of
wrapping ring rotations to cover the bale completely with plastic film
2. Add 0.5 to this number
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.