Important announcement

Dear visitor,

Please note that this OpenCourseWare platform will be replaced at the end of 2026 by a new platform (under the same url ocw.tudelft.nl).

Courses and their contents that are currently available the platform will partly be migrated. URL’s for this content will change and content might be unavailable for some time. In addition, some courses will not be available anymore.

If you are linking to specific courses on this platform (for instance for your students), please take timely measures to avoid problems with access. Possible actions are:

  • Download the materials to your local platform (laptop, server)
  • For educators only (including TU Delft lecturers): Contact us at ocw@tudelft.nl and inform us what course you are using in what context (institute, program, period of use, number of students). We will research (in collaboration with the authors of the course) and decide if we will migrate the course, and if yes, can supply you with a new url.

Thank you.

5.2.2 Defining user needs

Course subject(s) Module 5. Rethinking packaging

To rethink any packaging system, start by asking yourself which need(s) it must fulfil. Designers often use a method called How/ Why Laddering to uncover underlying user needs.

Begin by establishing a need that your product-packaging combination fulfils. Then ‘move up the ladder’ by asking ‘why?’. To ‘move down’ the ladder, ask yourself ‘how?’. The further you move up, the more abstract the needs become. By moving down, needs become more specific. For example:

‘’(To) feel confident about my appearance’’

↓How?       ↑Why?

‘’(To) keep my clothes clean and fresh’’

↓How?       ↑Why?

‘’(To) add a cleaning agent to my laundry’’

↓How?       ↑Why?

‘’(To) safely store enough laundry detergent for 60 washes’’

↓How?       ↑Why?

‘’(To) buy a 3L plastic bottle of laundry detergent’

On the next page we will discuss how you can determine which need to address.

Creative Commons License
Sustainable Packaging in a Circular Economy by TU Delft OpenCourseWare is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Based on a work at https://online-learning.tudelft.nl/courses/sustainable-packaging-in-a-circular-economy/.
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