Some green film is popular in Europe. Puncture strength how much it takes to poke a hole in the film. Stretch affects this quality, the more you stretch, the thinner the film. Quality film will be guaranteed for 1 year on bale. Storage Ensiling process should be complete in 21 days.
Check bales weekly for holes.
If a hole appears, patch with special repair tape to regain the airtight seal. Duct tape holds a seal for only 3 days. Hay baled to dry, will not store long, may need to re-wrap for long term storage, or use 6 layers. Feeding Remove film and feed as you would a dry bale of hay. There are some recycling facilities.