Platen or Platten: How To spell?
The word Platen is misspelled against Platten, an adjective meaning "To flatten and make into sheets or plates; as, to platten cylinder glass."
Platten has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings pla & en which should not be misspelled with single 'T'
Wrong Spelling:  pla-t-en  Correct Spelling:  pla-tt-en 
Explore spell check of Platten to spell without errors.