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Current Position:Home » News » Food Technology » Packaging » Topic

SIG packaging innovation making renewable materials mainstream

Zoom in font  Zoom out font Published: 2018-11-07  Views: 8
Core Tip: SIG claims that it’s SIGNATURE PACK is the world’s first aseptic carton pack linked to 100% plant-based renewable materials.
SIG claims that it’s SIGNATURE PACK is the world’s first aseptic carton pack linked to 100% plant-based renewable materials.
 
The environmental benefits of the package have been confirmed by critically reviewed ISO-conformant lifecycle assessment (LCA) – the world’s first for a mass balance product.
 
The LCA showed significant reductions in environmental impacts across all 10 categories because of the substitution of fossil-based polymers with mass balance plant-based polymers made from tall oil (a by-product of paper manufacturing).
 
The carbon footprint of SIGNATURE PACK is (on average across Europe) 66% lower than the carbon footprint of a standard SIG 1-litre carton pack of the same format across its lifecycle, based on the Europe-wide LCA.
 
Udo Felten, Manager Product Related Global Environmental Sustainability & Affairs at SIG, said: “The environmental impacts of every product innovation at SIG are evaluated through Europe-wide LCAs that conform with the rigorous requirements of recognised ISO standards.
 
“The results for SIGNATURE PACK show that SIG’s innovative mass balance approach has significant environmental benefits.”
 
The polymers in SIGNATURE PACK are 100% linked to plant-based material via a mass balance system, whereby plant-based raw materials are mixed in with conventional fossil raw materials to produce the polymers.
 
The amount of plant-based material included in the mix is equivalent to the amount needed for the polymers used in SIGNATURE PACK and the totals are balanced through recognised and audited certification schemes to ensure strict traceability and accountability.
 
The SIGNATURE PACK LCA is the first ISO-conformant LCA to consider the inclusion of materials via a mass balance system. LCAs are traditionally based on the physical contents of a product and the environmental impacts associated with each stage of its production.
 
The independent, critically reviewed LCA of SIGNATURE PACK was conducted in accordance with recognised international standards, ISO 14040 and ISO 14044 by the Institut für Energie und Umweltforschung (IFEU/Institute for Energy and Environmental Research) in Germany.
 
IFEU agreed to conduct the LCA when it became clear how valuable SIG’s mass balance approach could be in making mainstream polymer production more sustainable.
 
Frank Wellenreuther, Project Manager at IFEU, said: “The application of the mass balance approach in the production of polymers is an important driver to facilitate an increasing substitution of fossil resources by biogenic resources for the production of polymers.
 
“To model the examined products strictly on their physical properties would fail to acknowledge this function of the mass balance approach.”
 
Driving more sustainable plastics
 
SIG chose a mass balance approach because it supports a wider transition from fossil to bio-based raw materials within the conventional and highly efficient polymer industry, instead of using niche small scale producers with a limited number of plastic grades.
 
Felten said: “With the mass balance approach, SIG offers customers the environmental benefits of linking to 100% plant-based renewable materials, alongside the product quality and functionality which come from grades of polymer that are only available through mainstream production.”
 
The polymers are supplied by plastic producers, Sabic and BASF, using plant-based renewable material from European wood sources. Tall oil was selected as the feedstock because, as a by-product of paper production, it is a waste material rather than an agricultural crop that requires land and resources to grow.
 
IFEU’s Wellenreuther said: “The implementation of polymers based on tall oil via a mass balance system is recommended. The demand for mass balance polymers from SIG could act as a driver to achieve a more significant physical share of plant-based input materials for the production of polymers.”
 
 
 
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