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General comment The values determined to calculate the LCA originate from verified Nowy Styl Sp. z o.o. inventory data.
The data for the processes come from the following databases: Ecoinvent v.3.5, specific EPDs, ELCD, ÖKOBAUDAT, Ullmann’s, ITB-Data. Specific data quality analysis was a part of external ISO 14001 audit.
The allocation rules used for this EPD are based on general ITB PCR A. Production of the frame chairs AXO, CADEIRA, CAFE, LEVITATE POLYFOLD, WING II is a line process carried out in five factories of Nowy Styl Sp. z o.o. located in Krosno and Rzepedz (Poland). Allocation was done on product mass basis. All impacts from raw materials extraction are allocated in A1 module of the LCA. 100% of impacts from the line production of Nowy Styl Sp. z o.o. were inventoried and were allocated to the frame chairs production as follows: AXO, CADEIRA, CAFE, LEVITATE POLYFOLD, WING II. Utilization of packaging material was taken into consideration. Module A2 includes transport of raw materials such as wood, polymers (PE, PA, PU, PET), steel elements, papers, additives, ancillary materials and packaging materials from their suppliers to Nowy Styl Sp.z o.o. in Krosno and in Rzepedz. Municipal wastes of factory were allocated to module A3. Energy supply was inventoried for whole factory and was allocated to the frame chairs AXO, CADEIRA, CAFE, LEVITATE POLYFOLD, WING II production. Emissions in the factory are measured and were allocated to module A3.
The life cycle analysis of the declared products covers “Product Stage”, A1-A3, C2, C3, C4 and D modules (Cradle to Gate with options) accordance with ISO 14040 and ITB PCR A. The details of systems limits are provided in product technical report. All materials and energy consumption inventoried in factories and were included in calculation. In the assessment, all significant parameters from gathered production data are considered, i.e. all material used per formulation, utilized thermal energy, internal fuel and electric power consumption, direct production waste, and all available emission measurements. It can be assumed that the total sum of omitted processes does not exceed 5% of all impact categories. Machines and facilities (capital goods) required for and during production are excluded, as is transportation of employees.
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