What about plastics crafting by using UV lamp ?

I guess that's a good idea
I won’t say exactly when the release will be, approximately within a week

Batteries sometimes contains membrane separator (plastics??) to reduce electrolyte usage and can be bart of its container too.

Plasics lvl3: Suplhur is used for vulcanization proces in rubber production.

There is also high pipes usage in middle/late game. How about 5 pipes from 4 iron plates + 1 plastics. Plastics as inner layer of pipe "to prevent corrosion" :)

Yes )
I will think about specific values ​​for increasing output per second and how much it would be worth reducing the consumption of other components