The object should be removed from the polyethylene and the bag or sheeting discarded.
In general, wraps made of polyethylene are safer than polyvinyl chloride film.
High density polyethylene products, such as milk containers, are cut into small pieces and remelted to make detergent bottles.
For this I use the polyethylene tubing: the same stuff found on gear loops.
In the free radical polymerization of ethylene to form polyethylene , a small amount of a peroxide is added to a large volume of ethylene.
A polyethylene lining will protect the line from corrosion.
Before there was polyethylene there was celluloid, patented in 1870 by John and Isaiah Hyatt, the sons of a blacksmith.
Greenhouse polyethylene is more expensive, but can last ten years or more.
You may also cover the polyethylene with a thin layer of sand or a thin slab of concrete to protect it from damage.
The joint should be explored, the debris removed, and the polyethylene exchanged.