One breakthrough is the small size of the container. Until now, most Gamma-Clear applications were wide-mouth bottles for products such as pasta sauce and fruit preserves. The new, 10-ounce containers are narrow-neck packages.
Ipswich, Mass.-based Kortec said the injection stretch blow molded OPP containers have several advantages over previous container designs, which were extrusion blow molded.
They are almost 40 percent lighter than the previous plastic containers, they are as clear as PET and they cost much less to produce, said Scott Ludwig, Kortec's business development manager.
The previous PP extrusion blow molded fruit juice container also had a cloudy appearance, and weighed more than 30 grams. The Gamma-Clear container weighs less than 19 grams.
Ludwig said blow molders can save as much as $20 in production costs for every 1,000 containers.
Milliken supplies Millad clarifying agent for PP.
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