For technical products across many industries, small details are often modified without customers perceiving significant visual or functional changes. Manufacturers of such products or devices implement these changes to save costs, simplify the manufacturing processes, or make a product more reliable. Typically, these alterations are relatively simple to introduce as there are no regulatory restrictions on them; so long as customers are still happy, no feathers are ruffled. Thomas Schwarz at Constantia Flexibles gives us insight to blister packaging development.