Designers of child resistant closures used on packaging are continuously torn between the need to make packages difficult for children to open and relatively easy for adults, including seniors with limited mobility and dexterity.  

Until very recently the designer’s tool box has been very limited, relying on the use of:

• Differing cognitive skills of children verses adults
• Limited selection of molding materials
• Creativity in designing catch mechanisms.

This is changing with the ever increasing use of bi-injection molding and thermoplastic elastomers.

This presentation offers an overview of the bi-injection process and how this process along with advanced materials with new properties can offer senior adult friendly packaging that protects children.