Kōkiri Learn

Background reading · Technology

The life of a product: from raw material to rubbish (or not)

Life cycles, planned obsolescence and the circular economy: how designers think about what happens to a product before and after we use it.

Every product has a life story. It starts as raw materials in the ground, a forest or an oil well, and ends in a landfill, a recycling plant or, if it's well designed, as something new.

The six stages

  • Raw materials: timber, metal ore, oil for plastic, cotton. - Making: factories shape and join the materials, using energy and water. - Transport: ships and trucks move parts and products, often around the world. - Use: some products use energy or need cleaning and parts while we use them. - Repair: fixing it keeps it going and saves all the earlier stages. - End of life: landfill, recycling, composting or reuse.
  • Life cycle analysis

    A life cycle analysis adds up a product's impact at every stage. Sometimes the surprise is where the biggest impact is. For a fridge, it's the electricity it uses over 15 years. For a cheap plastic toy, it might be the making and the rubbish.

    Planned obsolescence

    Some products are designed to wear out, go out of fashion or be impossible to repair, so we buy another. That's called planned obsolescence. Glued-in batteries and parts you can't buy are signs of it. Good designers do the opposite: they use screws instead of glue, standard parts and materials that last.

    A circular economy

    In a linear economy we take, make and throw away. In a circular economy materials keep going round: products are repaired, shared, remade and recycled. In Aotearoa, some companies already turn used plastic drink bottles back into new food packaging.

    Design to last

    Charles and Ray Eames spent years testing moulded plywood in the 1940s to make chairs that were comfortable, strong and simple to produce. Many of those chairs are still being used today, around 80 years later. A design that lasts is one of the most sustainable choices you can make.

    Sources and further reading

    Written for Kōkiri Learn students in our own words. Check facts against the sources.

    Used in: Designing for Our Community