sealed air contract, page-28

Fill-Air R5® film’s name represents five sustainable attributes of the material. The film contains a minimum of 10 percent thermo plastic starch (TPS) resin, which is derived from an annually renewable source. The resin also contains a minimum of 10 percent pre-consumer recycled content derived from film manufacturing facilities.

We know that at least 10% of the film is made up of the resin, so there's 'v'. We just need w,x,y and z to answer your questions wormy :-)