Analysis cases

 

These are practical examples of packaging analysis based on the guideline. Eight analysis cases have been produced all based on end user studies carried out by Danish Technological Institute in 2008. The examples are also an illustration of how the calculation models, available under test your packaging, can be used to evaluate to what extent a certain packaging matches the target group’s physical strength.

 

 

 

Emballageanalyse medicin

 

 

Medicine container with screw cap and pull ring

The medicine container’s opening mechanism consists of two steps: 1) screw cap and 2) pull ring.

The user-friendliness of this packaging is in particular influenced by the pull ring as it requires a lot of strength to open. Especially women over the age of 60 have difficulties with this. In order to solve this problem the pull ring can be made easier to pull either by reducing the force necessary or by increasing the ring diameter allowing more fingers to be used an thereby increasing the force transfer. Other initiatives to make the packaging more user-friendly could be increasing the height of the lid to facilitate a better grip as well as making the marking of the opening direction of the screw cap and the visibility of the pull ring easier by using a different colour.

 

Read the entire case description here: Case: Medicine container with screw cap and pull ring (PDF 4 pages)

 

 

Emballageanalyse mælk

 

 

Milk carton with gabletop opening
The milk carton’s opening mechanism consists of two steps: 1) the wings are separated and pushed backwards, 2) forward push and pull whereby the spout is formed. When talking user-friendliness the critical parameter is the opening process as fine motor skills and coordination is needed. Furthermore the marking of the opening could be made clearer in order to improve the user-friendliness. The mechanical tests showed that the required force can vary a great deal, which is due to differences in the production. This considerable difference in needed force to open the milk carton greatly influences the user-friendliness and could have as a result that a large part of the population might not be able to open the packaging. The general perception of the packaging is that this type of milk carton is less user-friendly than a milk carton with a screw cap in spite the fact that people generally do not consider it difficult to open.

 

Read the entire case description here: Case: Milk carton with gabletop opening (PDF 4 pages)

 

 

 

 

Emballageanalyse pålækker

 

 

Cold cuts in a hard plastic packaging with easy-peel top foil

The opening mechanism of this cold cut packaging works by lifting the flexible top foil off the tray.  The opening flap is a triangle dimensioned 1×1 cm2. When talking user-friendliness the size of the opening flap is smaller than recommended and the marking of the opening flap is placed where it is difficult to identify and the force needed for opening varies. End user opinion on cold cuts packaging is generally bad. However, as a whole it was concluded that the packaging was easy to open in end user tests as well as in the mechanical test.

 

Read the entire case description here: Case: Cold cuts in a hard plastic packaging with top foil (PDF 3 pages)

 

 

 

Emballageanalyse tapini

 

 

Cardboard box with tear-strip/ inner foil bag

The opening procedure for the cardboard box is to grip the tear-strip marked by an indentation in the top of the packaging and pull it open. The bag is sealed so two sets of wings appear and are opened by separating them as the sealing is peel-able. When talking user-friendliness the obvious focus points will be the grip surface of the tear-strip being very small and the marking of where to grip could be clearer. The inner foil bag itself could also be made more user-friendly. An evaluation of the physical force needed to open the packaging shows beyond doubt that if the end user is able to get a hold of the tear-strip it is no problem to open the packaging. Besides the fine motor skills needed in the opening situation the packaging is perceived as being difficult to open because it actually consists of a double packaging.

 

Read the entire case description here: Case: Cardboard box with tear-strip and inner foil bag (PFD 3 pages)

 

Emballageanalyse digestive

 

 

Digestive biscuits in a foil roll with tear-strip

The opening mechanism of the packaging works in this way: Using the tear-strip you ‘unzip’ the packaging in a straight line following the round shape of the packaging. This opening mechanism, however, could be made clearer which inspired us to study whether the opening mechanism is actually used. The force transfer needed to open the packaging as intended is very low, so this is not the problem. Virtually everybody will be able to open the packaging as intended. End user tests show that even though a lot of end users don’t use the tear-strip, they still categorise the packaging as being easy to open. A further initiative for user-friendliness in this type of packaging would be applying a re-seal function.

 

Read the entire case description here: Case: Digestive biscuits in a foil roll (PDF 3 pages)

 

 

 

Emballageanalyse makrel

 

 

Aluminium can with pull ring

The opening procedure for this can is to lift and bend the ring in a 90-180° angle before it is pulled in the opposite direction. Most end users are familiar with a can with a pull ring and know that they have to pull the ring to open it. However, there is a risk that the ring is not bent sufficiently far before they pull which makes the packaging harder to open. The most important factor in user-friendliness with this packaging is therefore estimated to be the force needed both for lifting the ring and for pulling it to open the can. Furthermore the user-friendliness can be improved by securing that the contents don’t spurt out when the can is opened. Estimates based on the physical measurements of the can and the mechanical test of the lift and pull force needed suggest that a large part of the population will experience difficulties pulling the ring to open the can. This was also obvious in the end user study where 30% found the can difficult to open. A simple way to let more people be able to open the can could be to increase the pull ring diameter providing the end users with a better grip.

 

Read the entire case description here: Case: Aluminium can with pull ring (PDF 4 pages)

 

Emballageanalyse haribo

 

 

Laminate candy bag with pre-cut

The producers’ opening strategy for the candy bag is to use the pre-cut pulling with two hands in opposite directions. End users open this type of packaging by holding the bag’s sides in a pincer grip. Therefore part of the user-friendliness of this type of packaging is to clarify how it should be opened. This can be done on the packaging itself. If the packaging is opened the way the producer has intended it is very easy to open as not much force is needed. This has been proven in end user studies as well as mechanical tests. The result is quite opposite if a pincer grip is used in the opening situation.

 

Read the entire case description here: Case: Laminated candy bag with pre-cut (PDF 3 pages)

 

 

Emballageanalyse kaffe

 

 

Vacuum-packed coffee in a block

The opening procedure for the coffee packaging is to remove the tape and separate the wings thereby puncturing the packaging. When the vacuum is released it is possible to pull the bag open as the sealing is peel-able. The intention, however, is not to open the packaging by hand but by using scissors. In spite of this the packaging was evaluated without using tools and by the majority of end users and in the mechanical test categorised as being difficult to open. Based on this result the opening procedure and the re-seal mechanism are the most obvious focus points when considering user-friendliness.

 

Read the entire case description here: Case: Vacuum-packed coffee in a block (PDF 3 pages)