Premium Grass Silage Wrap & Agriculture Mulch Films - Durable & UV Resistant

Technical FAQ: Grass Silage Wrap/Agriculture Mulch

Premium films like LIYA's use 5-layer blown film extrusion with specialized resin combinations. This includes ethylene-based resins for elasticity, adhesion layers for inter-layer bonding, and barrier resins like EVOH with oxygen transmission rates below 700 cm³/m²/24hr. The co-extrusion process precisely controls layer thickness distribution for optimized performance.

Quality Grass Silage Wrap complies with ISO 16776:2016 for plastics and ASTM D882 for tensile properties. Premium films maintain at least 30MPa tensile strength and 650% elongation. European standards EN 13207:2001 additionally specify UV stability requirements for agricultural films.

Optimal thickness ranges between 25-30 microns. Thinner films risk puncture and oxygen penetration, while thicker options reduce material efficiency. Our 5-layer films provide superior oxygen barrier at 27-30 microns, reducing dry matter losses to less than 8% compared to 15-20% with inferior wraps.

Advanced films incorporate synergistic stabilizer packages including HALS (Hindered Amine Light Stabilizers) and UV absorbers like benzotriazoles. These systems provide at least 16 months field durability while maintaining mechanical properties. Recent studies show these formulations retain 90% elongation after intensive UV exposure tests per ISO 4892-2.

Coverage density varies by DM content: high-moisture grass (45-55% DM) requires minimum 75% overlap, drier materials (60-65% DM) need 55% overlap. Bale density should exceed 700kg/m³ for optimal fermentation. Modern guidelines from the American Forage Association recommend 6 film layers at strategic contact points.

Premium films feature micro-surface modifications including corona treatment and anti-fog additives (e.g. glycerol esters) that reduce surface tension. This creates a continuous water film instead of droplets, preventing fungal spore germination. Research shows this reduces mold growth by up to 80% compared to untreated films.

While standard films allow 30-50% recycled content, LIYA's premium films contain maximum 20% post-industrial recycled resin in non-critical layers. Maintaining virgin resin in barrier and UV protection layers ensures optimal oxygen barrier (below 600 cm³/m²/24hr) and mechanical performance retention above 95% through the warranty period.