Binding and wrapping a bale with film improves the quality of both the bale and the forage. In addition, multiple film layers improve the quality of sealing and limit the development of mould in the bale. Using the same film offers the additional advantage of having only one type of waste material and the bale is much easier to unwrap.
The highest possible feed quality and the lowest loss of dry matter. Previously, it was standard practice to bind round bales with net then apply film layers with a wrapper. Nowadays, the combination of binding and wrapping, both with film appears to produce a better bale and therefore higher forage quality.
As the bale is both bound and wrapped with plastic film, this eliminates the need for net completely. This film binding system uses standard 750 mm rolls of film – 60% of the bale is covered in film during the binding process and then the rest is covered by the wrapper.
Film binding reduces mould development
A pressure test has indicated that it takes air 160 seconds longer to permeate film bound and wrapped bales than bales bound by net. The bale is so airtight that mould has less chance to develop. Research1 also shows that the loss of dry matter resulting from mould in a net-wrapped bale (125 cm diameter) can reach more than 8.5 kg. In a film bound and wrapped bale, this is 80% lower (1.7 kg).
Airtight bales with film binding
To ensure forage quality, the influence of all external factors – including those of the bale – must be excluded. Using the same stretch film for both binding and wrapping creates an airtight bale that also retains its shape. By pre-stretching the film by 75%, it retracts like elastic around the bale, forcing out any air pockets and preventing from forming as the air has no way of penetrating the bale. Using the same film offers the additional advantage of having only one type of waste material to recycle and the bale is much easier to unwrap.