plastic printed parts

[sweep]

Good morning at the whole forum, I have a new question: Most of the details printed with plastics show, on the surface not in sight, the indication of the material used for the realization of the piece. In my opinion this information is only useful for the disposal/recycling of the component, do any of you know other reasons why to insert this information directly on the piece?
Thank you.

 

[Meteor02]

the question is a little generic, according to the destination of use of the particular can be necessary to insert it (e.g. food contact or chemical) on other occasions it is not necessary but still useful not only to the disposal but to a possible repair, and still combined with a date help to manage the warehouse and the montages. Ultimately if there are no particular reasons not to insert it is always better to indicate date and material.

 

[sweep]

Good. Thank you very much for the delucidation. for our case we have decided to insert in addition to the material, code, date and degree of self-extinguishing.
Thanks again.