Silage films

The European Union (EU) countries use 160,000 tons in transparent crop covering, 148,000 tons in black silage film, 60,000 in transparent mulch films, and around 33,000 in stretch films [44]. 

Silage films are used primarily to preserve silage and maize. They maintain the nutritional value of the contents and inhibit undesirable fermentation processes. Traditional silage films can be mono- or co-extruded, range from 100 to 200 p,m, and are normally pigmented (black or white). In the case of bale wrapping for round or square bales, films are normally very thin (10-25 p,m), applied in multiple layers and pigmented (mainly black or white). 

Tackifiers are used to promote adhesiveness in film surfaces. They are generally added to products that will be used in stretch/cling applications such as pallet wrap and silage films. One of the most common tackifiers is polyisobutylene (PIB). 

Stabilization of plastics, particularly greenhouse films, mulch films, silage, and rigid pipes used in irrigations, are discussed in detail. Some case studies showing... 

Disposal of plastic films used for greenhouses, mulches, and silage bale wrapping do have some associated problems. Farmers dispose of these plastics through one of the two methods on-site land filling and burning. 

Holes in Silage Wrap Film During Film Blowing... 

Holes caused by gels appeared during film blowing of linear low-density polyethylene silage wrap film. The gels appeared to melt when film samples were heated on a microscope hot stage, but infra-red analysis showed the observed gels were clusters of... 

Furthermore, the surface properties will be influenced by additives ranging from slippery waxes and slip additive for packaging films, to sticky additives for pallet and silage wrap films. 

For economic reasons, polybutene tackifier is frequently incorporated into linear low-density polyethylene (LLDPE) during extrusion of pallet wrap and silage wrap films. Taking this additive as an example, there are four points at which a liquid can be added (Figure 12.2) ... 

Figure 12.2 Polybutene injection points for silage and pallet wrap film extrusion.

Polybutene in Pallet-wrap and Silage-wrap Film... 

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