His efforts encountered resistance from bakers, however – why did bakers resist this development?
Answer: They said the bread would dry out.
Turns out that by 1927 Rohwedder had designed a machine that not only sliced the bread but also wrapped it, and that new and improved commercial bread slicer, was completed in 1928 (he filed his application for a patent on November 26, 1928).
As an interesting side note, the commercially sliced bread used uniform and somewhat thinner slices – and that led to people eating more slices of bread at a time, and ate bread more frequently. That not only increased consumption of bread, but also the consumption of spreads, such as jam, to put on the bread.