Impacto del Embalaje en la Sostenibilidad del Transporte de Materiales de Construcción

Packaging for construction materials generates a volume of waste that the industry has underestimated for decades. According to WRAP (2023) data, the European construction sector produces approximately 12 million tonnes annually of packaging waste, representing 15% of all packaging waste generated in the EU. A residential building project of 100 dwellings typically generates between 8 and 14 tonnes of packaging waste, composed of plastic film (32%), wooden pallets (28%), cardboard (18%), metal and plastic strapping (12%) and expanded polystyrene (10%). This volume occupies between 60 and 90 m³ of on-site containers, incurring management costs of 1,200-2,500 euros per project.

The impact of packaging on transport sustainability manifests through two channels: additional weight and wasted volume. Data from consultancy Anthesis Group (2022) indicate that packaging accounts for between 3% and 8% of total transported weight in the construction material supply chain, a percentage that translates into unnecessary additional truck journeys. For a supplier making 10,000 deliveries annually, eliminating excess packaging could remove between 300 and 800 trips, saving 25-65 tonnes of CO₂. Shrink wrap used to protect pallets of bricks or blocks, for example, adds 2-3 kg per pallet that becomes non-recyclable waste after a single use, multiplied across the 180 million pallets of ceramic material distributed annually in Europe.

Returnable packaging systems are the most effective alternative for reducing waste in materials transport. The returnable pallet model managed by companies such as CHEP and PECO Pallet has shown that reusing a standard 1,200 x 800 mm pallet over 80-100 cycles reduces the carbon footprint per use by 80% compared to single-use pallets. CHEP manages a pool of over 330 million pallets worldwide, of which approximately 18 million serve the European construction sector. Each reusable pallet prevents the felling of 0.05 m³ of timber per cycle, which at sector scale equates to preserving 900,000 m³ of wood annually.

Foldable steel and plastic containers for items such as screws, plumbing fittings, electrical supplies and hardware achieve return rates exceeding 95% when integrated into closed supplier-site-supplier loops. The German company IFCO Systems has adapted its reusable container model from the food industry to construction, with polypropylene (PP) containers that support up to 30 kg and withstand 120 use cycles before being recycled. The life-cycle assessment conducted by the Fraunhofer Institute (2021) concluded that these systems generate 65% fewer CO₂ emissions and 73% less solid waste than equivalent disposable packaging, with an average return on investment of 14 months for companies making more than 500 deliveries per month.

Innovation in packaging materials is transforming the sustainability of the construction supply chain. Stretch films made from post-consumer recycled polyethylene (PCR), incorporating between 30% and 50% recycled content, have achieved mechanical performance comparable to virgin films: tensile strength of 25-30 MPa and elongation at break of 300-400%. Manufacturers such as Berry Global and Grupo Armando Alvarez sell PCR film rolls for the construction sector at a premium below 8% compared to conventional film, which amounts to an additional cost of just 0.02 euros per pallet.

Bio-based packaging represents an emerging frontier. The Finnish company Paptic has developed a packaging material based on cellulose fibre that replaces plastic film for protecting construction materials against moisture, with a water resistance of Cobb60 = 25 g/m² and biodegradability certified to EN 13432. In field trials carried out with insulation manufacturer Paroc in 2022, the Paptic material demonstrated protection equivalent to low-density polyethylene (LDPE) over outdoor storage periods of up to 6 months, with an 85% reduction in the carbon footprint of the packaging. Other innovations include compressed cardboard edge protectors with compressive strength of 800-1,200 kg that replace expanded polystyrene edge protectors, eliminating a material with a recycling rate below 10% on construction sites.

The European regulatory framework is tightening requirements on packaging in the construction sector. The Packaging and Packaging Waste Regulation (PPWR), adopted by the European Parliament in 2024, stipulates that by 2030 100% of packaging placed on the EU market must be recyclable and 65% must be effectively recycled. For the construction sector, this entails the progressive elimination of non-separable multi-layer packaging, PVC films and unrecycled expanded polystyrene. Penalties for non-compliance may reach up to 4% of the manufacturer's or distributor's annual turnover, according to the final text of the regulation.

At the level of voluntary standards, BREEAM certification (2023 version) includes the Wst 02 credit, which awards up to 3 points for implementing a packaging waste minimization plan that demonstrates a reduction of more than 50% compared to conventional practices. LEED v4.1 includes the MR — Construction and Demolition Waste Management credit, which values the diversion of packaging waste from landfill. In France, the AGEC Act (Anti-gaspillage pour une Economie Circulaire, 2020) requires construction material suppliers to accept the free return of all commercial packaging, under an Extended Producer Responsibility (EPR) scheme managed by the eco-organization Citeo, which collected 838 million euros in 2022 to fund packaging collection and recycling.