WRAPINNG UP ROLLS – PREAPRATION AND TESTS
It results from tests, around four layers of the foil constitute optimum safeguard against the access of oxide to the silage. However using six layers is giving the maximum airtightness and the mechanical protection, particularly if bale the silage has more than standard participation of a dry matter.
Wrapping up with less than 4 layers is increasing losses of a dry matter, risk of the riot of the mould and is reducing the nutritional value of the silage. A risk of contamination of fodder is also appearing through the Listeria Bacterium.
Everything is beginning by correctly wrapped up of roll.
In order to provide tight wrapping up the roll, one should well prepare rolls for wrapping up. Rolls should firmly be nailed together and have an identical shape and a size. The net should reach the at least edge of the round area of the roll in order to limit coming off of the excess of green fodder. An amount of oxygen trapped in the roll is making it lower as well as is facilitating very procedure of wrapping up.
PREPARING FOIL FOR USE
The foil should properly be prepared for wrapping up. Rolls with the foil should be stored vertically, in the environmental temperature. In the destination of avoiding damage, rolls should be taken out directly before wrapping up.
MAINTENANCE OF THE WIRE-WRAP TOOL
With time glue from the foil is accumulating on rolls of the wire-wrap tool, peculiarly of the ones made of rubber or plastic. It is leading dust to sticking to rolls and in the end is preventing the foil from the appropriate tension. Rolls of the wire-wrap tool should regularly be cleaned with spirit (with not a petrol, since she is destroying the surface of the roll).
A need of new carving the sophisticated tread of the roll can also occur with the help of the angle grinder
BEFORE WRAPPING UP ONE SHOULD CAREFULLY READ MANUALS OF THE FOIL AND THE WIRE-WRAP TOOL.
TESTS BEFORE WRAPPING UP
Before setting about to works it is worthwhile testing the wire-wrap tool in order to make sure that the silage will be wrapped up in appropriately tight rolls.
CHECK THE 50% OF THE TUCK
Put rolls on to the wire-wrap tool and roll it up with two turnovers of the device.
Next to measure the distance from the edge of the base coat to the place, in which the foil is starting being covered through the second layer. This distance should amount to the half of the height of the foil stretched over the roll.
CHECKING THE AMOUNT OF LAYERS
- we are putting first rolls on the wire-wrap tool
- we are slowly wrapping rolls up to the moment when green fodder isn't sticking out from under the foil and how many turnovers we are counting passed up to this moment
- we are still adding one turnover in order to get the 50% of the bookmark
- in order to get 4 layers of the foil, it should be repeated above points twice, however by 6 layers - three times.
CHECKING STRENGTH OF THE TENSION OF THE FOIL
- we are putting the roll on to the wire-wrap tool
- we are wrapping the roll up for the half of the turn of the turntable
- in the vicinity of rolls we are drawing two lines with the marker on the foil in the distance of 10 cm from oneself
- we are doing the next trade in the wire-wrap tool
- we are finding lines and we are measuring the distance between them. They should be distant from oneself for 17 cm what is marking perfect, 70% tension of the foil
- in the end we are wrapping the rest of turnovers up and we are finding the free end of the foil cut to size. We are measuring the height of layer after stretching. By foil 75 cm is should be from 58 up to 61 cm what getting the 70% of the tension means.
If we can see that the roll badly is wrapping itself, one should set the wire-wrap tool based on instructions of the producer. A few minutes spent on preparations for wrapping the roll up save months of worries, whether fodder will be well ensilaged.
INCORRECT WRAPPING UP THE ROLL CAUSES A NUMBER OF PROBLEMS
- sliding of foil: poorly the tightened foil loosely is wrapping rolls up
- incomplete coverage with the foil: insufficient amount of layers
- excessive stretching the foil: tuck of layers under the 50%
- holes and slits in the foil: caused by dust stuck to rolls.
All above mistakes cause the weaker protection before the access of oxygen and in the end weaker quality of the silage.