This part of ISO 20299 specifies the material and physical property requirements for non-strippable film for wrapping general-purpose synthetic rubber bales, intended to keep the bales separate during storage, for example for wrapping — styrene-butadiene rubber (SBR); — butadiene rubber (BR). Certain applications or processing methods require the removal of the film. This part of ISO 20299 does not deal with strippable films.