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Market research collage

The market research college contains various types of products which could be a solution to this problem. All types are categorized based on how they work, what kind of problem they resolve, and on different product characteristics, such as how much fine muscle coordination is required. The top-left category includes products solving the problem of opening the lid of a can. The top-mid category has products that are adaptable to size using a strap and which need focus to put the product on the correct height as there is no ‘stop’ when the product is in the correct height. The top-right category contains products that are adaptable to size. 


The bottom-left category includes products that could be put onto the twist cap, and by rotating the container itself (instead of the product), the twist cap would open. The bottom-mid category contains products that use friction (and sometimes the ‘ribs’ around the twist cap as well) to open the twist cap, so the user would in most cases have to squeeze the product around the twist cap. Finally, the bottom-right category includes products that also mediate pouring a liquid content of the container.

Based on the knowledge we had about the participant after the second physical meeting combined with the knowledge of how these products work and their characteristics, we tried to see if the participant could use this product, why, and notes on for example what should be changed about the product to make it useable for the participant.

The table with this information can be found by clicking on the button below.


The handle collage was composed to be able to show to the participant as well as give inspiration for the ideation of handles. We used this collage for Co-Design and showed it to the participant, so they could give their opinion on them and give us a clear insight into what is convenient and what is not. Besides that, we brought various types of handles and shapes which fit nicely into a hand to try and see what kinds are convenient and why.

Finally, we performed a twist-cap study. This Twist-cap study is meant to orient on what types of caps are sold, including information about the size, material, texture and possible extra seals. The size of the twist caps is measured as the perimeter of the caps. This twist cap study is in the appendix. 

After the twist-cap study, we could conclude that the circumference of most twist caps is between 70 mm and up to 280 mm. Most twist caps are made of plastic which can be bent by human force, and some are made of tin-plate. Most of the twist caps have ribs or some kind of texture that could provide grip. Almost all twist caps have a seal, which unseals after the cap is opened the first time.

Market Research

Market research was done to gain proper insight into the current market for this problem, into the twist caps on which the product should operate, and into handles that are convenient for the participant. This was achieved by performing a twist-cap study, market research on current product solutions for the problem, and a handle collage containing different types of handles to show the participant.

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