Packaging Investigations

Case Studies

Our Technical Investigations consultants offer a fast response service, which provides problem identification and solution recommendations through a combination of laboratory and production line studies.

“Fruit Shoot”

  • Immediately before launch in March 2000, Britvic became aware of the potential for the ‘sports’ cap being detached by young children in normal use.
  • The launch was stopped immediately and a programme of testing initiated.
    Pira was asked to develop a test rig that enabled repeatable testing to be carried out that simulated biting and twisting.
  • The rig enabled Britvic to benchmark their original cap against a range of products available from other manufacturers and develop a revised cap design with superior performance.
  • ‘Fruit Shoot’ was successfully re-launched in August 2000.
  • This rotational opening force test now forms part of the British Soft Drinks Association Code of Practice for Sports Closures.

 

Pira adhesive performance tester

 

 

“Self-heating can”

  • In the summer of 2000, Nestlé UK in partnership with Thermotic Developments approached Pira with a prototype self-heating can.
  • Given the novelty of the pack format and the lack of consumer experience with such technology, Nestlé required independent assessment of any risk to the consumer through a process of brainstorming and practical laboratory evaluation. Pira proposed areas for improvement and concluded that with the appropriate modifications the can could be marketed as a safe and convenient product.
  • Nestlé ‘hot when you want’ coffee was successfully launched in May 2001.

 

 

Sports closure test rig

 

“Ream wrapping”

  • M-real had experienced failure of the hot melt glue bond on ream wraps: more of an issue with increasing customer purchases of individual reams.
  • An assessment of the commercial glue bonding process and a laboratory assessment of hot melt adhesives using the recently developed Pira adhesive performance tester (PAPTII – see opposite).
  • As a result of this work Pira was able to recommend suitable adhesive grades and the changes necessary in the control of adhesive application.
  • After implementation of these recommendations, glue bond failures have been totally eliminated.

Thermal image of self-heating can