Guest Story Submisson

By Konstantin Grytsenko The first story is about my youth. I did not too much read sci. publications, so did not know, that PTFE is not possible to deposit film in vacuum by thermal evaporation. Just put the piece of PTFE in crucible and got the film. Farther got...

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As luck would have it…

Have you ever met with a colleague or customer on the production floor to discuss a problem they were experiencing, only to see it happen first hand while you were there? It continually surprises and amazes me how often I have had this experience. I recall one...

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7 Hilariously Ingenious Engineering Pranks

When it comes to eye-opening pranks, hacks, and stunts, no one can equal a team of determined engineering students. If you’re looking for inspiration – speaking strictly hypothetically, of course – or want to sit back and marvel at what your fellow engineers can...

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A True Story from the Production Floor

The Call: We received a call from a company using dry rotary claw vacuum pumps on their extruder vents. This company extrudes Polystyrene and ABS with a variety of extrusion equipment and had recently installed vacuum extruder vents on all of their extruders. Unfortunately they did not put vacuum traps in the line in front of the vacuum pumps to remove the volatile contaminants from the gas stream prior to the gas stream passing through the pumps. The simple, standard knockout pots installed in the line were not effective in removing the contamination from the gas stream.
The Result: This customer experienced a number vacuum pump failures due to this volatile material condensing in their pumps. This caused considerable extruder down time and costly vacuum pump repairs. We were contacted after their fourth vacuum pump failure.
The Fix: After reviewing this customer’s process in detail it was determined that installing an MV MULTI-TRAP with a Cooling Option in front of the vacuum pump would take the volatiles out of the gas stream so they would

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Not for the fainthearted

I always thought vacuum technology was a little boring. The applications/processes that utilize vacuum however can be very interesting and sometimes even fascinating. I have been in the industry going on three decades now and it is still amazing to run into an existing or new application I never heard of. One particular application I remember in detail was in my early years during routine sales calls to a NH medical college. In those days you could simply walk the halls, and poke you head in each lab to

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