SICV - Banco Nacional de Inventários do Ciclo de Vida

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Data set: Plastic conversion, extrusion, blown film BR (01.00.000)

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Full name
Plastic conversion, extrusion, blown film BR
Reference year
Valid until
Reference flow(s)
Unit process, single operation
LCIA results included?
Materials production / Plastics
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General comment
This dataset was generated following the qualidata guidelines for the Brazilian national life cycle inventory database (SICV). The reported data represents a total production volume of 271.31 ton/yr. 1 kg of this process equals 1.0168 kg of extruded blown film plastics due to mass of included additives and polymer losses. Included activities end: The conversion process was taken apart and data was collected on all relevant material and energy flows crossing the process boundary. The process is restricted to the conversion process and does not consider recycling within the process. Although 4 data points were gathered, this dataset strives to represent the Brazilian reality by matching collected metadata such as machine production year with the average national profile for machines through a simple average. Due to confidentiality matters, no single data point can be represented. This dataset does not contain the polymer to be converted. The user shall add 0.9835 kg of polymer to the model. The secondary processes of water, additives, energy and packaging production, as well as treatment of solid waste were connected to the primary process. There is no known missing data. Sampling procedure: data reported from four companies, representing 4 blown film extrusion machines. Data quality is represented by means of pedigree matrix. System boundary: Transport of energy and materials were not considered. Geography: Plastics conversion technology and practices do not vary among the country. Given the extend of this data collection the data is relevant to Brazilian reality, thus, national scale. Technology level: Current (default) Technology: Data gathered on current plastic blown film extrusion technology, reflecting the majority of hydraulic type machines reported by Gorni, 2016 in "Inventário Plástico Industrial". The polymer is extruded through a heated cylinder by a spinning screw thread. In the end, the material flows through a circular die and inner airflows form a cylindrical plastic film. Machinery production capacity ranges from 35 to 60 kg/h and is older than 20 years. The polymer used was PE. Start date: 2014-01-01 End date: 2016-12-31 Is data valid for entire period: True Time period: Data gathered between 2016 and 2017 related to processes performed between 2014 and 2016 Infrastructure: This dataset does not consider infrastructure Macro-economic scenario name: Business-as-Usual Data representativeness: Brazilian transformation market produced 6.69 million metric tonnes of plastic products in 2015 (ABIPLAST, 2015 in "Perfil 2015"). Considering that number of machines are proportional to production, the blown film extrusion process will equate to 9% of machine share on market (Gorni, 2016). This dataset reflects primary data gathered from 0.06% of Brazilian blown film extrusion machinery. Despite the quantitative low representativeness, there are strong indications that the process parameters represent most of the market qualitatively. Methodological approach: Attributional Process subdivision / Allocation: No allocation process was needed. This is not a multi-output process. All packaging waste from plastics industry process still holds some value, therefore, it was common to see companies selling it to recycling companies. Polymer losses from transformation process are sent to sanitary landfill. Cut-off criteria: Data were gathered from every material and energy flows crossing the system boundaries. When data was not available, average from Ecoinvent v.3 and other companies were used to fill the gap. For example, packaging data exceptionally on pallet usage was not reported by most of the companies, thus, we considered an average from Ecoinvent v.3.3 apud Plastics Europe to build this database. Reference flow: Conversion of 1kg of plastics Emissions: It is known that plastic transformation may emits Volatile Organic Compounds (VOCs) due to resin and additives composition and melting temperature. Therefore, emission factors were obtained from Yamashita et al. (2009). Results are reported as Toluene equivalents due to data availability. Water: All water flows are due to cooling systems (mold and machine). When data was not available, information from specialists (cooling system and polymer conversion) was taken into consideration. According to experts, 2% of the circulating water can be lost every hour. Based on a model developed it was possible to estimate the circulating water from available information such as machine power and productivity. When data was reported for the factory as a whole, mass allocation was applied, if human consumption was aggregated, an estimative of human consumption was subtracted based on representative local utility provider. References: ABIPLAST. Perfil 2015. Brazilian Plastic Industry Association. São Paulo, 2015. Available at Gorni, Antonio. Inventário Plástico industrial. Revista Plástico Industrial, 36-62. São Paulo, outrubro, 2016 Sabesp, 2016. Relatório de Sustentabilidade 2015. São Paulo - SP. Available at page 35 Yamashita, K., Yamamoto, N., Mizukoshi, A., Noguchi, M., Ni, Y. and Yanagisawa, Y. (2009). Compositions of Volatile Organic Compounds Emitted from Melted Virgin and Waste Plastic Pellets. J. Air Waste Manage. Assoc. 59: 273-278. Administration field: Company: ACV Brasil Contact:
LCI Method Principle
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ILCD Format
Compliance system(s)
  • ILCD compliance 1.1 (Overall compliance: Fully compliant)
  • ILCD Data Network - Entry-level (Overall compliance: Not compliant)
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