Waste Management

Waste management strategy

Our sustainable waste management bases on classification and separation of waste and the use of safe disposal methods according to legal requirements.

Our waste is partly coming from production and construction activities. Despite all efforts to use resources efficiently and minimize waste generation, Infineon still produces waste that cannot be avoided. Therefore, our subsequent objective is to ensure that the remaining waste is disposed properly and efficiently by professional waste disposal companies.

Nowadays, there are several methods, technically and economically feasible, of treating waste before its final disposal. Out of the recovery methods, Infineon prefers recycling prior to non-recovery methods.

The main aspect of our sustainable waste management is naturally the avoidance of waste. Without our comprehensive waste preventing activities as e.g. recycling, the figures on waste generation would be considerably higher. 

All the waste that cannot be avoided is collected separately wherever possible at the point where it is produced.

Infineon requires solvents in its manufacturing. After use, these can, if technically and economically feasible, be purified to such an extent by distillation, either internally or externally, so that they can be reused as solvents in our production. On the one hand, this reduces the purchase of new goods and, on the other, it reduces the waste generated.

 

  • Infineon uses redestillation to successfully externally recycle the solvents propylene glycol monomethyl ether acetate (PGMEA), cyclopentanone, N-methyl-pyrrolidone (NMP) as well as dimethyl formamide (DMF).
  • At the Villach (Austria) site, reusable plastic packing which is sent back and forth between sites has been used in wafer transport, primarily for the site’s deliveries to Warstein (Germany) and Cegléd (Hungary). This activity has started some years ago and resulted in significant savings of e.g. up to 70,000 cartons and up to 140,000 pieces of foam plastic in the fiscal year 2019. This reusable packing was developed by Infineon employees on a cross-site basis in collaboration with suppliers.
  • Our site in Regensburg (Germany) began delivering used cardboard boxes to an external service provider for reuse in March 2016.
  • The recovery of precious metals (palladium and gold) from the galvanic sludge of the Regensburg site was awarded a third-place medal by the Idea Management Center of the German Institute for Idea and Innovation Management (Deutsches Institut für Ideen- und Innovationsmanagement) in Frankfurt in the “Best Sustainability Idea of 2016” competition.

These are some examples for the outcome of our successful waste management approach we apply since years.

We obtain excellent results

1) Basis for the calculations is the waste generation in grams per square centimeter manufactured wafer in our frontend production sites according to WSC (World Semiconductor Council) definition.

Have a look in our Sustainability Report page 33.

Consult our figures in our CSR Performance Summary.