''Australia is a mature market and consolidation is always positive.'' Amcor shares rallied 10¢ on the news to close at $6.90. The purchase would bring with it significant operational benefits and cost savings, Amcor said, while pointing to the boost Aperio would give to its innovation capabilities, along with additional ''scale and breadth of technology''. ''This is an important strategic opportunity for our Asia-Pacific flexible packaging business,'' Amcor managing director Ken MacKenzie said in a statement. ''The acquisition of the Aperio Group will enable us to deliver an improved offering to customers, particularly through innovation,'' Mr MacKenzie said.