How can I exclude the impact of materials in the impact calculation of manufacturing processes in ecoinvent?

Question

I'm trying to calculate the environmental impact of just the manufacturing processes like knitting, weaving etc. in the textile UPR LCA datasets of ecoinvent. I would like to exclude the impact of the materials from the calculation. For eg:
"textile production, cotton, air jet loom weaving | textile, woven cotton | Cutoff, U"

This dataset has the following input flows:

When I add this process to a product system and calculate the environmental impact using openLCA, I see that the impact of the "yarn, cotton" is included in the final value:



How can I exclude this input from the calculation entirely? I would just like to model the impact of the weaving process only.

Answer 1

Well, e.g., remove the providers for the material and create the product system with only using default providers?

Best wishes,

Andreas