23 June 2009 14:57 [Source: ICIS news]
Lightweighting of plastic bottles has frequently been blamed for declining PET growth rates in recent years, but DAK Americas business director Tom Sherlock said he believes there is a second side to that story.
While each weight reduction means a one-time negative impact in bottle resin demand, a lighter container actually boosts the long-term viability of PET with cost and competitive advantages compared with other materials, Sherlock said from the sidelines of the NPE2009 show in Chicago.
With a container option that requires less resin and thus lower costs, manufacturers of certain packaging applications see PET as a more viable alternative to other polymers, he said.
Participants have also seen a more sustained rate of conversion to PET from materials like glass and aluminium than would have been possible before lightweighting, Sherlock said.
More than 40,000 people had registered to attend the NPE as of mid-Monday. The event continues through Friday.
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