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Plastics Industry Veteran Retires after 40 Years
Ray Burns, plastics industry veteran, retires after 40 years Read More »

Mack Announces New President for Southern Division
Mack Announces New President for Southern Division Read More »

Rich Hornby Promoted to Top Operations Role at Mack
Rich Hornby Promoted to Top Operations Role at Mack Read More »

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MACK BLOG
August 4, 2014
Why 60% Rib-to-Wall Ratio is NOT Sacred

It has long been an accepted practice in the plastics industry to maintain a 60 percent rib-to-nominal-wall ratio in injection molded parts. Any increase in this ratio can cause visible sinks on the part’s cosmetic surface. However, with a thickness differential of 40 percent, the […]


July 16, 2014
Sylvia Jarvis: Working at Mack a Family Tradition


July 2, 2014
Sharan Bolster: 47-Year Employee Trades Hairnet for Cowboy Hat



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