Passion for plastics drives Orbital's Catignani


Injection molding consultant Umberto Catignani says he found his calling the first time he saw a press.
Karen Hanna

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Umberto Catignani enjoys going to car shows. Here, he shows off an award recognizing his 1968 Oldsmobile 442 as one of the 16 best entries at a show.

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By Karen Hanna 

You might think Umberto Catignani’s 1968 black-cherry Oldsmobile 442 is his dream machine.  

But it wasn’t the molding consultant’s first love.  

That would be the press he first laid eyes on at age 22 while contemplating career paths in materials engineering.  

“I was just blown away that this machine could make such complex parts,” Catignani said. “I just was floored. And, so, [I thought] ‘That's exactly what I want to do. I want to be a thermoplastic injection molding process engineer.’ ” 

For Catignani, who at one point considered pursuing a doctorate to be able to teach at the university level, two passions have converged as he’s forged the perfect career — as president of Orbital Plastics Consulting, which trains molding personnel and provides assistance to companies on molding projects. He recently spoke with  Plastics Machinery & Manufacturing Senior Staff Reporter Karen Hanna. 


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Tell me about what you and Orbital do. 

Catignani: When I go out into the field and do consulting, [I’m] trying to figure out what's wrong. Is it the mold, the machine, the material, part design? When I get there, a lot of the things I find are just some of the basics that are not being done correctly. 

We get a lot of work where part designs are not working or parts fail. We need to use an alternative material. We do jobs where people never molded a part before and they want to get into injection molding. We spec equipment; we do everything except mold parts and design parts from scratch. We'll redesign parts, help people project-manage a tool, make comments on how they should be built.  

I've done the whole thing with my business partners.  

I try to pride myself on taking very complex subject matter and bringing it down into layman's terms. 

I teach the fundamentals of scientific molding. People just don’t understand how the mold works, the processing parameters, the machine, molding, terminology, the basics.  

When I teach, I'm huge on “why.” 

What could the cause-and-effect relationship be between changing a machine setting from the plastic’s point of view, its four primary plastic conditions — its temperature, its flow rate, its pressure and its cooling? 

Can you tell me about an interesting project you’ve helped a client complete? 

Catignani: I've done reverse engineering completely on [a medical] part where basically someone gives us this part and says, “Here, I want to make millions of these,” and we don't know anything [about the part].  So, we scan the part to get its approximate dimensions. We have to do an analysis on the plastic to figure out, is it a polypropylene copolymer? What kind of additives are in it? And then build a mold to get the right part and right shrinkage and dimensions. That was a huge challenge, but it was very enjoyable because, a lot of times, it’s more concurrent engineering. That situation, which we got to do completely from scratch, was great because we were in control.  

So many times, there [are] gaps, when people make a mistake on material selection or part design or processing a part, things like that. And that's when we get involved, and we can help with different sections of it. 

Umberto Catignani
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