6.2.2 Preparation of moulded test pieces
Raw rubber and unvulcanized rubber shall be sheeted out to approximately 2,2 mm thickness and placed in
the mould with the grain direction oriented so as to have the grain direction along the length of the test pieces,
care being taken that a suitable film is placed between the mould walls and the rubber compound in order to
promote mould release. Polyester or PTFE film 0,25 mm thick has been found suitable.