Multilayer packaging structurally composed of two or more polymers are identified with the code “7” since Decision 129/97/EC also in this case does not provide for specific codes for these materials.
More specific information regarding the composition of multilayer plastic packaging is voluntarily applicable. In this case it is advisable to follow the provisions of the UNI EN 11469 technical standard, according to which the abbreviations of the polymers composing the packaging are written between the symbols “> ” is “< “, And interposed by the sign” + “.
For example, a multilayer composed of LDPE and HDPE can be identified as follows:> LDPE + HDPE LDPE1 + HDPE2 <7.
Last modified on 19/11/2021