Silage film is a specialized type of plastic film used in agriculture for covering and preserving silage, which is fermented and stored high-moisture forage such as grass, corn, or other crops. The film creates an airtight seal over the silage, preventing oxygen from reaching it and allowing anaerobic fermentation to occur, which preserves the forage for later use as animal feed. Silage film helps maintain the nutritional quality of the stored forage and reduces spoilage.